feat(docs): reorganize docs (#7136)
@@ -1,24 +1,24 @@
|
|||||||
.. _changelog:
|
.. _changelog:
|
||||||
|
|
||||||
Changelog
|
Change Log
|
||||||
=========
|
==========
|
||||||
|
|
||||||
`v9.2 <https://github.com/lvgl/lvgl/compare/v9.1.0...v9.2.0>`__ 26 August 2024
|
`v9.2 <https://github.com/lvgl/lvgl/compare/v9.1.0...v9.2.0>`__ 26 August 2024
|
||||||
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
||||||
|
|
||||||
It's huge release with many interesting updates:
|
It's huge release with many interesting updates:
|
||||||
|
|
||||||
- Built-in `Wayland driver <https://docs.lvgl.io/master/integration/driver/wayland.html>`__
|
- Built-in :ref:`Wayland driver <wayland_driver>`
|
||||||
- `OpenGL ES and GLFW driver <https://docs.lvgl.io/master/integration/driver/opengles.html>`__ with support for external textures
|
- :ref:`OpenGL ES and GLFW driver <opengl_es_driver>` with support for external textures
|
||||||
- `Renesas GLCDC <https://docs.lvgl.io/master/integration/driver/display/renesas_glcdc.html>`__ driver
|
- :ref:`renesas_glcdc` driver
|
||||||
- L8 and I1 rendering support
|
- L8 and I1 rendering support
|
||||||
- Matrix transformations during rendering
|
- Matrix transformations during rendering
|
||||||
- New `file system interfaces <https://docs.lvgl.io/master/libs/fs.html>`__: LittleFS, ESP LittleFS, Arduino FS
|
- New :ref:`file system interfaces <libs_filesystem>`: LittleFS, ESP LittleFS, Arduino FS
|
||||||
- SDL renderer improvements (supporting all draw task types and improving speed)
|
- SDL renderer improvements (supporting all draw task types and improving speed)
|
||||||
- Radial, Conic, and Skew `gradients supported <https://docs.lvgl.io/master/overview/style.html#metallic-knob-with-conic-gradient>`__ by software rendering and VG-Lite
|
- Radial, Conic, and Skew `gradients supported <https://docs.lvgl.io/master/details/base-widget/styles/style.html#metallic-knob-with-conic-gradient>`__ by software rendering and VG-Lite
|
||||||
- `QNX <https://docs.lvgl.io/master/integration/os/qnx.html>`__ and `MQX <https://docs.lvgl.io/master/integration/os/mqx.html>`__ support
|
- :ref:`qnx` and :ref:`mqx` support
|
||||||
- `Mouse hover handling <https://docs.lvgl.io/master/get-started/quick-overview.html>`__
|
- :ref:`Mouse hover handling <styles_states>`
|
||||||
- `Lottie <https://docs.lvgl.io/master/widgets/lottie.html>`__ support
|
- :ref:`lv_lottie` support
|
||||||
- CI tests for UEFI builds
|
- CI tests for UEFI builds
|
||||||
|
|
||||||
And many smaller fixes and features
|
And many smaller fixes and features
|
||||||
|
|||||||
@@ -148,7 +148,7 @@ illustrating most of the Doxygen commands used in LVGL.
|
|||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Set alignment of objects placed in containers with LV_STYLE_FLEX_FLOW style.
|
* Set alignment of Widgets placed in containers with LV_STYLE_FLEX_FLOW style.
|
||||||
*
|
*
|
||||||
* The values for the `..._place` arguments come from the `lv_flex_align_t`
|
* The values for the `..._place` arguments come from the `lv_flex_align_t`
|
||||||
* enumeration and have the same meanings as they do for flex containers in CSS.
|
* enumeration and have the same meanings as they do for flex containers in CSS.
|
||||||
@@ -170,7 +170,7 @@ illustrating most of the Doxygen commands used in LVGL.
|
|||||||
* - https://css-tricks.com/snippets/css/a-guide-to-flexbox/
|
* - https://css-tricks.com/snippets/css/a-guide-to-flexbox/
|
||||||
* - see `lv_obj_set_flex_grow()` for additional information.
|
* - see `lv_obj_set_flex_grow()` for additional information.
|
||||||
*/
|
*/
|
||||||
void lv_obj_set_flex_align(lv_obj_t * obj, lv_flex_align_t main_place, lv_flex_align_t cross_place,
|
void lv_obj_set_flex_align(lv_obj_t * widget, lv_flex_align_t main_place, lv_flex_align_t cross_place,
|
||||||
lv_flex_align_t track_cross_place);
|
lv_flex_align_t track_cross_place);
|
||||||
|
|
||||||
|
|
||||||
@@ -264,12 +264,12 @@ follow some coding conventions:
|
|||||||
- Use typed pointers instead of :cpp:expr:`void *` pointers
|
- Use typed pointers instead of :cpp:expr:`void *` pointers
|
||||||
- Widget constructor must follow the ``lv_<widget_name>_create(lv_obj_t * parent)`` pattern.
|
- Widget constructor must follow the ``lv_<widget_name>_create(lv_obj_t * parent)`` pattern.
|
||||||
- Widget members function must start with ``lv_<widget_name>`` and should receive :cpp:expr:`lv_obj_t *` as first
|
- Widget members function must start with ``lv_<widget_name>`` and should receive :cpp:expr:`lv_obj_t *` as first
|
||||||
argument which is a pointer to widget object itself.
|
argument which is a pointer to Widget object itself.
|
||||||
- ``struct`` APIs should follow the widgets' conventions. That is to receive a pointer to the ``struct`` as the
|
- ``struct`` APIs should follow the widgets' conventions. That is to receive a pointer to the ``struct`` as the
|
||||||
first argument, and the prefix of the ``struct`` name should be used as the prefix of the
|
first argument, and the prefix of the ``struct`` name should be used as the prefix of the
|
||||||
function name too (e.g. :cpp:expr:`lv_display_set_default(lv_display_t * disp)`)
|
function name as well (e.g. :cpp:expr:`lv_display_set_default(lv_display_t * disp)`)
|
||||||
- Functions and ``struct``\ s which are not part of the public API must begin with underscore in order to mark them as "private".
|
- Functions and ``struct``\ s which are not part of the public API must begin with underscore in order to mark them as "private".
|
||||||
- Argument must be named in H files too.
|
- Argument must be named in H files as well.
|
||||||
- Do not ``malloc`` into a static or global variables. Instead declare the variable in ``lv_global_t``
|
- Do not ``malloc`` into a static or global variables. Instead declare the variable in ``lv_global_t``
|
||||||
structure in ``lv_global.h`` and mark the variable with :cpp:expr:`(LV_GLOBAL_DEFAULT()->variable)` when it's used.
|
structure in ``lv_global.h`` and mark the variable with :cpp:expr:`(LV_GLOBAL_DEFAULT()->variable)` when it's used.
|
||||||
- To register and use callbacks one of the following needs to be followed.
|
- To register and use callbacks one of the following needs to be followed.
|
||||||
@@ -293,7 +293,7 @@ Here is example to show bracket placing and using of white space:
|
|||||||
/**
|
/**
|
||||||
* Set new text for a label. Memory will be allocated by label to store text.
|
* Set new text for a label. Memory will be allocated by label to store text.
|
||||||
*
|
*
|
||||||
* @param label pointer to label object
|
* @param label pointer to label Widget
|
||||||
* @param text '\0' terminated character string.
|
* @param text '\0' terminated character string.
|
||||||
* NULL to refresh with current text.
|
* NULL to refresh with current text.
|
||||||
*/
|
*/
|
||||||
|
|||||||
@@ -52,7 +52,18 @@ The most important thing that has to be done when contributing to LVGL is ***EVE
|
|||||||
The below are some rules to follow when updating any of the `.rst` files located in the `./docs/` directory and any of it's subdirectories.
|
The below are some rules to follow when updating any of the `.rst` files located in the `./docs/` directory and any of it's subdirectories.
|
||||||
|
|
||||||
|
|
||||||
### index.rst files
|
### What to Name Your `.rst` File
|
||||||
|
|
||||||
|
The documentation-generation logic uses the stem of the file name (i.e. "event" from file name "event.rst") and compares this with code-element names found by Doxygen. If a match is found, then it appends hyperlinks to the API pages that contain those code elements (names of macros, enum/struct/union types, variables, namespaces, typedefs and functions).
|
||||||
|
|
||||||
|
If this is appropriate for the .RST file you are creating, ensure the stem of the file name matches the beginning part of the code-element name you want it to be associated with.
|
||||||
|
|
||||||
|
If this is *not* appropriate for the .RST file you are creating, ensure the stem of the file name DOES NOT match any code-element names found in the LVGL header files under the ./src/ directory.
|
||||||
|
|
||||||
|
In alignment with the above, use a file name stem that is appropriate to the topic being covered.
|
||||||
|
|
||||||
|
|
||||||
|
### index.rst Files
|
||||||
|
|
||||||
If you create a new directory you MUST have an `index.rst` file in that directory and that index file needs to be pointed to in the `index.rst` file that is located in the parent directory.
|
If you create a new directory you MUST have an `index.rst` file in that directory and that index file needs to be pointed to in the `index.rst` file that is located in the parent directory.
|
||||||
|
|
||||||
@@ -124,6 +135,8 @@ This in-line markup (interpreted text using the Sphinx-defined custom `:ref:` ro
|
|||||||
|
|
||||||
This latter syntax enables you to put a **link target** anywhere in an .RST file (not just above a heading) and link to it using this syntax.
|
This latter syntax enables you to put a **link target** anywhere in an .RST file (not just above a heading) and link to it using this syntax.
|
||||||
|
|
||||||
|
Note: This latter syntax was either added or fixed in Sphinx recently. It did not work in Sphinx 7.3.7.
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
@@ -144,19 +157,19 @@ If you are creating a new .RST file, use this convention:
|
|||||||
=====
|
=====
|
||||||
Title
|
Title
|
||||||
=====
|
=====
|
||||||
|
|
||||||
Chapter
|
Chapter
|
||||||
*******
|
*******
|
||||||
|
|
||||||
Section
|
Section
|
||||||
-------
|
-------
|
||||||
|
|
||||||
Sub Section
|
Sub Section
|
||||||
~~~~~~~~~~~
|
~~~~~~~~~~~
|
||||||
|
|
||||||
Sub Sub Section
|
Sub Sub Section
|
||||||
^^^^^^^^^^^^^^^
|
^^^^^^^^^^^^^^^
|
||||||
|
|
||||||
Sub Sub Sub Section
|
Sub Sub Sub Section
|
||||||
'''''''''''''''''''
|
'''''''''''''''''''
|
||||||
|
|
||||||
@@ -201,7 +214,7 @@ To create a bulleted list, do the following:
|
|||||||
lines to align with item text like this.
|
lines to align with item text like this.
|
||||||
- If you want to include a code block under a list item,
|
- If you want to include a code block under a list item,
|
||||||
it must be intended to align with the list item like this:
|
it must be intended to align with the list item like this:
|
||||||
|
|
||||||
.. code-block: python
|
.. code-block: python
|
||||||
<=== blank line here is important
|
<=== blank line here is important
|
||||||
# this is some code
|
# this is some code
|
||||||
@@ -232,22 +245,23 @@ If you want to reference portions of the LVGL code from the documentation (in .R
|
|||||||
|
|
||||||
There is a special directive when wanting to use a more complex expression. For example when showing the arguments passed to a function.
|
There is a special directive when wanting to use a more complex expression. For example when showing the arguments passed to a function.
|
||||||
|
|
||||||
:cpp:expr:`lv_obj_set_layout(obj, LV_LAYOUT_FLEX)`
|
:cpp:expr:`lv_obj_set_layout(widget, LV_LAYOUT_FLEX)`
|
||||||
|
:cpp:expr:`lv_slider_set_mode(slider, LV_SLIDER_MODE_...)`
|
||||||
|
|
||||||
Arguments that are expressions (more than one word), or contain non-alphanumeric characters will cause the `:cpp:expr:` interpreted-text to fail. Examples:
|
Arguments that are expressions (more than one word), or contain non-alphanumeric characters will cause the `:cpp:expr:` interpreted-text to fail. Examples:
|
||||||
|
|
||||||
:cpp:expr:`lv_obj_set_layout(obj, LV_LAYOUT_FLEX/GRID)` <== arg with > 1 word
|
:cpp:expr:`lv_obj_set_layout(widget, LV_LAYOUT_FLEX/GRID)` <== arg with > 1 word
|
||||||
:cpp:expr:`lv_obj_set_layout(obj, LV_LAYOUT_*)` <== asterisk
|
:cpp:expr:`lv_obj_set_layout(widget, LV_LAYOUT_*)` <== asterisk
|
||||||
:cpp:expr:`lv_obj_set_layout(*obj, LV_LAYOUT_FLEX)` <== asterisk
|
:cpp:expr:`lv_obj_set_layout(*widget, LV_LAYOUT_FLEX)` <== asterisk
|
||||||
:cpp:expr:`lv_obj_set_layout((lv_obj_t *)obj, LV_LAYOUT_FLEX)` <== cast
|
:cpp:expr:`lv_obj_set_layout((lv_obj_t *)widget, LV_LAYOUT_FLEX)` <== cast
|
||||||
:cpp:expr:`lv_obj_set_layout(&obj, LV_LAYOUT_FLEX);` <== ampersand
|
:cpp:expr:`lv_obj_set_layout(&widget, LV_LAYOUT_FLEX);` <== ampersand & semicolon
|
||||||
:cpp:expr:`lv_obj_set_layout(obj, ...)` <== elipsis
|
:cpp:expr:`lv_obj_set_layout(widget, ...)` <== lone elipsis
|
||||||
|
|
||||||
For such examples, simply use reStructuredText literal markup like this:
|
For such examples, simply use reStructuredText literal markup like this:
|
||||||
|
|
||||||
``lv_obj_set_layout(obj, LV_LAYOUT_FLEX/GRID)``
|
``lv_obj_set_layout(widget, LV_LAYOUT_FLEX/GRID)``
|
||||||
``lv_obj_set_layout(obj, LV_LAYOUT_*)``
|
``lv_obj_set_layout(widget, LV_LAYOUT_*)``
|
||||||
``lv_obj_set_layout(*obj, LV_LAYOUT_FLEX)``
|
``lv_obj_set_layout(*widget, LV_LAYOUT_FLEX)``
|
||||||
``lv_obj_set_layout((lv_obj_t *)obj, LV_LAYOUT_FLEX)``
|
``lv_obj_set_layout((lv_obj_t *)widget, LV_LAYOUT_FLEX)``
|
||||||
``lv_obj_set_layout(&obj, LV_LAYOUT_FLEX);``
|
``lv_obj_set_layout(&widget, LV_LAYOUT_FLEX);``
|
||||||
``lv_obj_set_layout(obj, ...)``
|
``lv_obj_set_layout(widget, ...)``
|
||||||
|
|||||||
@@ -75,16 +75,16 @@ Cライブラリ。(C++互換) -
|
|||||||
任意の(RT)OS、任意のMCU・MPU用にコンパイル可能。 -
|
任意の(RT)OS、任意のMCU・MPU用にコンパイル可能。 -
|
||||||
電子ペーパー、OLEDディスプレイ、TFTディスプレイ、白黒ディスプレイ、モニターに対応。
|
電子ペーパー、OLEDディスプレイ、TFTディスプレイ、白黒ディスプレイ、モニターに対応。
|
||||||
`Porting
|
`Porting
|
||||||
Guide <https://docs-lvgl-io.translate.goog/master/porting/project.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
Guide <https://docs-lvgl-io.translate.goog/master/intro/add-lvgl-to-your-project/project.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
- MITライセンスにより商用利用可能。 - システム要件:RAM 32KB、Flash
|
- MITライセンスにより商用利用可能。 - システム要件:RAM 32KB、Flash
|
||||||
128KB、フレームバッファ、レンダリング用に1/10以上のスクリーンサイズのバッファ。
|
128KB、フレームバッファ、レンダリング用に1/10以上のスクリーンサイズのバッファ。
|
||||||
- OS、外部メモリ、GPUもサポート。
|
- OS、外部メモリ、GPUもサポート。
|
||||||
|
|
||||||
**ウィジェット、スタイル、レイアウトなど** - 30以上の組み込み
|
**ウィジェット、スタイル、レイアウトなど** - 30以上の組み込み
|
||||||
`ウィジェット <https://docs-lvgl-io.translate.goog/master/widgets/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__: ボタン、ラベル、スライダー、グラフ、キーボード、メーター、円弧、表など。
|
`ウィジェット <https://docs-lvgl-io.translate.goog/master/details/widgets/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__: ボタン、ラベル、スライダー、グラフ、キーボード、メーター、円弧、表など。
|
||||||
-
|
-
|
||||||
ウィジェットの任意の部分を任意の状態にカスタマイズ可能な豊富なスタイルプロパティを備えた柔軟な
|
ウィジェットの任意の部分を任意の状態にカスタマイズ可能な豊富なスタイルプロパティを備えた柔軟な
|
||||||
`スタイルシステム <https://docs-lvgl-io.translate.goog/master/overview/style.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__\ 。
|
`スタイルシステム <https://docs-lvgl-io.translate.goog/master/details/base-widget/styles/style.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__\ 。
|
||||||
-
|
-
|
||||||
`Flexbox <https://docs-lvgl-io.translate.goog/master/layouts/flex.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
`Flexbox <https://docs-lvgl-io.translate.goog/master/layouts/flex.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
および
|
および
|
||||||
@@ -98,9 +98,9 @@ Guide <https://docs-lvgl-io.translate.goog/master/porting/project.html?_x_tr_sl=
|
|||||||
アニメーション、アンチエイリアシング、不透明度、スムーズスクロール、シャドウ、画像変換などをサポートするレンダリングエンジン。
|
アニメーション、アンチエイリアシング、不透明度、スムーズスクロール、シャドウ、画像変換などをサポートするレンダリングエンジン。
|
||||||
-
|
-
|
||||||
マウス、タッチパッド、キーパッド、キーボード、外部ボタン、エンコーダ等の
|
マウス、タッチパッド、キーパッド、キーボード、外部ボタン、エンコーダ等の
|
||||||
`入力デバイス <https://docs-lvgl-io.translate.goog/master/porting/indev.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
`入力デバイス <https://docs-lvgl-io.translate.goog/master/details/modules/indev.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
をサポート。 -
|
をサポート。 -
|
||||||
`マルチディスプレイ <https://docs-lvgl-io.translate.goog/master/overview/display.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
`マルチディスプレイ <https://docs-lvgl-io.translate.goog/master/details/modules/display.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
対応。
|
対応。
|
||||||
|
|
||||||
**Binding と Build をサポート** - `MicroPython
|
**Binding と Build をサポート** - `MicroPython
|
||||||
@@ -108,9 +108,9 @@ Binding <https://blog-lvgl-io.translate.goog/2019-02-20/micropython-bindings?_x_
|
|||||||
が LVGL API を公開。 -
|
が LVGL API を公開。 -
|
||||||
カスタムビルドシステムは使用せず、プロジェクトの他のファイルをビルドするときに、LVGLをビルド可能。
|
カスタムビルドシステムは使用せず、プロジェクトの他のファイルをビルドするときに、LVGLをビルド可能。
|
||||||
- Make と
|
- Make と
|
||||||
`CMake <https://docs-lvgl-io.translate.goog/master/get-started/platforms/cmake.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
`CMake <https://docs-lvgl-io.translate.goog/master/details/integration/building/cmake.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
が含まれており、すぐ使えるようにサポート。 -
|
が含まれており、すぐ使えるようにサポート。 -
|
||||||
`PCのシミュレータで開発したUIコード <https://docs-lvgl-io.translate.goog/master/get-started/platforms/pc-simulator.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
`PCのシミュレータで開発したUIコード <https://docs-lvgl-io.translate.goog/master/details/integration/ide/pc-simulator.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
は、そのまま組込み用ハードウェアでも使用可能。 - `Emscripten
|
は、そのまま組込み用ハードウェアでも使用可能。 - `Emscripten
|
||||||
port <https://github.com/lvgl/lv_web_emscripten>`__ :gb:
|
port <https://github.com/lvgl/lv_web_emscripten>`__ :gb:
|
||||||
によりC言語のUIコードをHTMLファイルに変換。
|
によりC言語のUIコードをHTMLファイルに変換。
|
||||||
@@ -128,19 +128,19 @@ UI開発をよりシンプルかつ迅速にするための、ユーザーイン
|
|||||||
--------------------
|
--------------------
|
||||||
|
|
||||||
LVGL は以下で利用可能です。 - `Arduino
|
LVGL は以下で利用可能です。 - `Arduino
|
||||||
library <https://docs-lvgl-io.translate.goog/master/get-started/platforms/arduino.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
library <https://docs-lvgl-io.translate.goog/master/details/entegration/framework/arduino.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
- `PlatformIO
|
- `PlatformIO
|
||||||
package <https://registry.platformio.org/libraries/lvgl/lvgl>`__ :gb: -
|
package <https://registry.platformio.org/libraries/lvgl/lvgl>`__ :gb: -
|
||||||
`Zephyr
|
`Zephyr
|
||||||
library <https://docs-zephyrproject-org.translate.goog/latest/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
library <https://docs-zephyrproject-org.translate.goog/latest/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
- `ESP32
|
- `ESP32
|
||||||
component <https://docs-lvgl-io.translate.goog/master/get-started/platforms/espressif.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
component <https://docs-lvgl-io.translate.goog/master/details/integration/chip/espressif.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
- `NXP MCUXpresso
|
- `NXP MCUXpresso
|
||||||
component <https://www-nxp-com.translate.goog/design/software/embedded-software/lvgl-open-source-graphics-library:LITTLEVGL-OPEN-SOURCE-GRAPHICS-LIBRARY?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
component <https://www-nxp-com.translate.goog/design/software/embedded-software/lvgl-open-source-graphics-library:LITTLEVGL-OPEN-SOURCE-GRAPHICS-LIBRARY?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
- `NuttX
|
- `NuttX
|
||||||
library <https://docs-lvgl-io.translate.goog/master/get-started/os/nuttx.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
library <https://docs-lvgl-io.translate.goog/master/details/integration/os/nuttx.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
- `RT-Thread
|
- `RT-Thread
|
||||||
RTOS <https://docs-lvgl-io.translate.goog/master/get-started/os/rt-thread.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
RTOS <https://docs-lvgl-io.translate.goog/master/details/integration/os/rt-thread.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
- NXP MCUXpresso library - CMSIS-Pack
|
- NXP MCUXpresso library - CMSIS-Pack
|
||||||
|
|
||||||
:robot:
|
:robot:
|
||||||
@@ -386,7 +386,7 @@ C code
|
|||||||
/*Add the style sheet to the slider's INDICATOR part*/
|
/*Add the style sheet to the slider's INDICATOR part*/
|
||||||
lv_obj_add_style(slider, &style_indicator, LV_PART_INDICATOR);
|
lv_obj_add_style(slider, &style_indicator, LV_PART_INDICATOR);
|
||||||
|
|
||||||
/*Add the same style to the KNOB part too and locally overwrite some properties*/
|
/*Add the same style to the KNOB part as well and locally overwrite some properties*/
|
||||||
lv_obj_add_style(slider, &style_indicator, LV_PART_KNOB);
|
lv_obj_add_style(slider, &style_indicator, LV_PART_KNOB);
|
||||||
|
|
||||||
lv_obj_set_style_outline_color(slider, lv_color_hex(0x0096FF), LV_PART_KNOB);
|
lv_obj_set_style_outline_color(slider, lv_color_hex(0x0096FF), LV_PART_KNOB);
|
||||||
@@ -441,7 +441,7 @@ MicroPython code \| Online Simulator :gb:
|
|||||||
slider.add_style(style_indicator, lv.PART.INDICATOR)
|
slider.add_style(style_indicator, lv.PART.INDICATOR)
|
||||||
slider.add_style(style_indicator, lv.PART.KNOB)
|
slider.add_style(style_indicator, lv.PART.KNOB)
|
||||||
|
|
||||||
# Add the same style to the KNOB part too and locally overwrite some properties
|
# Add the same style to the KNOB part as well and locally overwrite some properties
|
||||||
slider.set_style_outline_color(lv.color_hex(0x0096FF), lv.PART.KNOB)
|
slider.set_style_outline_color(lv.color_hex(0x0096FF), lv.PART.KNOB)
|
||||||
slider.set_style_outline_width(3, lv.PART.KNOB)
|
slider.set_style_outline_width(3, lv.PART.KNOB)
|
||||||
slider.set_style_outline_pad(-5, lv.PART.KNOB)
|
slider.set_style_outline_pad(-5, lv.PART.KNOB)
|
||||||
@@ -556,16 +556,16 @@ LVGLを使い始める時は、以下の順に進める事をおすすめしま
|
|||||||
`Introduction <https://docs-lvgl-io.translate.goog/master/intro/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
`Introduction <https://docs-lvgl-io.translate.goog/master/intro/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
を読みましょう。 (5分間)
|
を読みましょう。 (5分間)
|
||||||
3. LVGLの基本に慣れるため `Quick
|
3. LVGLの基本に慣れるため `Quick
|
||||||
overview <https://docs-lvgl-io.translate.goog/master/get-started/quick-overview.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
overview <https://docs-lvgl-io.translate.goog/master/intro/overview.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
を読みましょう。 (15分間)
|
を読みましょう。 (15分間)
|
||||||
|
|
||||||
**LVGLを使ってみましょう**
|
**LVGLを使ってみましょう**
|
||||||
|
|
||||||
4. `シミュレータ <https://docs-lvgl-io.translate.goog/master/get-started/platforms/pc-simulator.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
4. `シミュレータ <https://docs-lvgl-io.translate.goog/master/details/integration/ide/pc-simulator.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
をセットアップしましょう。 (10 minutes)
|
をセットアップしましょう。 (10 minutes)
|
||||||
5. `サンプルプログラム <https://github.com/lvgl/lvgl/tree/master/examples>`__
|
5. `サンプルプログラム <https://github.com/lvgl/lvgl/tree/master/examples>`__
|
||||||
:gb: を動かしてみましょう。
|
:gb: を動かしてみましょう。
|
||||||
6. `移植ガイド <https://docs-lvgl-io.translate.goog/master/porting/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
6. `移植ガイド <https://docs-lvgl-io.translate.goog/master/intro/add-lvgl-to-your-project/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
を参考に、LVGLを開発ボードに移植してみましょう。すぐ使える形の
|
を参考に、LVGLを開発ボードに移植してみましょう。すぐ使える形の
|
||||||
`プロジェクト <https://github.com/lvgl?q=lv_port_>`__ :gb:
|
`プロジェクト <https://github.com/lvgl?q=lv_port_>`__ :gb:
|
||||||
も用意してあります。
|
も用意してあります。
|
||||||
@@ -573,10 +573,10 @@ LVGLを使い始める時は、以下の順に進める事をおすすめしま
|
|||||||
**より詳しく体験してみましょう**
|
**より詳しく体験してみましょう**
|
||||||
|
|
||||||
7. ライブラリの理解を深めるため
|
7. ライブラリの理解を深めるため
|
||||||
`Overview <https://docs-lvgl-io.translate.goog/master/overview/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
`Overview <https://docs-lvgl-io.translate.goog/master/details/modules/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
を読みましょう。 (2~3時間)
|
を読みましょう。 (2~3時間)
|
||||||
8. ウィジェットの機能や使い方の詳細は
|
8. ウィジェットの機能や使い方の詳細は
|
||||||
`Widgets <https://docs-lvgl-io.translate.goog/master/widgets/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
`Widgets <https://docs-lvgl-io.translate.goog/master/details/widgets/index.html?_x_tr_sl=en&_x_tr_tl=ja&_x_tr_hl=ja>`__
|
||||||
でご確認ください。
|
でご確認ください。
|
||||||
|
|
||||||
**助け合いましょう**
|
**助け合いましょう**
|
||||||
|
|||||||
@@ -88,8 +88,8 @@ algum suporte durante o desenvolvimento de seu próximo projeto de GUI.
|
|||||||
dependências externas.
|
dependências externas.
|
||||||
- Pode ser compilado para qualquer display MCU ou MPU, e qualquer
|
- Pode ser compilado para qualquer display MCU ou MPU, e qualquer
|
||||||
sistema operacional de tempo real (RT-OS).
|
sistema operacional de tempo real (RT-OS).
|
||||||
- Suporta monitores monocromáticos, ePaper, OLED ou TFT. `Guia de
|
- Suporta monitores monocromáticos, ePaper, OLED ou TFT. :ref:`Guia de
|
||||||
portabilidade <https://docs.lvgl.io/master/porting/project.html>`__
|
portabilidade <initializing_lvgl>`
|
||||||
- Distribuído sob a licença do MIT, para que você também possa usá-lo
|
- Distribuído sob a licença do MIT, para que você também possa usá-lo
|
||||||
facilmente em projetos comerciais.
|
facilmente em projetos comerciais.
|
||||||
- Precisa de apenas 32 kB de RAM e 128 kB de Flash, um frame buffer e
|
- Precisa de apenas 32 kB de RAM e 128 kB de Flash, um frame buffer e
|
||||||
@@ -126,10 +126,10 @@ algum suporte durante o desenvolvimento de seu próximo projeto de GUI.
|
|||||||
- Nenhum sistema de compilação personalizado é usado. Você pode
|
- Nenhum sistema de compilação personalizado é usado. Você pode
|
||||||
construir o LVGL enquanto constrói os outros arquivos do seu projeto.
|
construir o LVGL enquanto constrói os outros arquivos do seu projeto.
|
||||||
- O suporte para Make e
|
- O suporte para Make e
|
||||||
`CMake <https://docs.lvgl.io/master/get-started/platforms/cmake.html>`__
|
:ref:`CMake <build_cmake>`
|
||||||
já vem incluído.
|
já vem incluído.
|
||||||
- `Desenvolva no
|
- `Desenvolva no
|
||||||
PC <https://docs.lvgl.io/master/get-started/platforms/pc-simulator.html>`__
|
PC <https://docs.lvgl.io/master/details/integration/ide/pc-simulator.html>`__
|
||||||
e use o mesmo código de interface do usuário em hardwares
|
e use o mesmo código de interface do usuário em hardwares
|
||||||
incorporados (embedded hardware).
|
incorporados (embedded hardware).
|
||||||
- Converta o código C para um arquivo HTML com o `Emscripten
|
- Converta o código C para um arquivo HTML com o `Emscripten
|
||||||
@@ -187,19 +187,19 @@ receberá o pagamento em alguns dias.
|
|||||||
LVGL está disponível para:
|
LVGL está disponível para:
|
||||||
|
|
||||||
- `Arduino
|
- `Arduino
|
||||||
library <https://docs.lvgl.io/master/get-started/platforms/arduino.html>`__
|
library <https://docs.lvgl.io/master/details/entegration/framework/arduino.html>`__
|
||||||
- `PlatformIO
|
- `PlatformIO
|
||||||
package <https://registry.platformio.org/libraries/lvgl/lvgl>`__
|
package <https://registry.platformio.org/libraries/lvgl/lvgl>`__
|
||||||
- `Zephyr
|
- `Zephyr
|
||||||
library <https://docs.zephyrproject.org/latest/kconfig.html#CONFIG_LVGL>`__
|
library <https://docs.zephyrproject.org/latest/kconfig.html#CONFIG_LVGL>`__
|
||||||
- `ESP32
|
- `ESP32
|
||||||
component <https://docs.lvgl.io/master/get-started/platforms/espressif.html>`__
|
component <https://docs.lvgl.io/master/details/integration/chip/espressif.html>`__
|
||||||
- `NXP MCUXpresso
|
- `NXP MCUXpresso
|
||||||
component <https://www.nxp.com/design/software/embedded-software/lvgl-open-source-graphics-library:LITTLEVGL-OPEN-SOURCE-GRAPHICS-LIBRARY>`__
|
component <https://www.nxp.com/design/software/embedded-software/lvgl-open-source-graphics-library:LITTLEVGL-OPEN-SOURCE-GRAPHICS-LIBRARY>`__
|
||||||
- `NuttX
|
- `NuttX
|
||||||
library <https://docs.lvgl.io/master/get-started/os/nuttx.html>`__
|
library <https://docs.lvgl.io/master/details/integration/os/nuttx.html>`__
|
||||||
- `RT-Thread
|
- `RT-Thread
|
||||||
RTOS <https://docs.lvgl.io/master/get-started/os/rt-thread.html>`__
|
RTOS <https://docs.lvgl.io/master/details/integration/os/rt-thread.html>`__
|
||||||
- NXP MCUXpresso library
|
- NXP MCUXpresso library
|
||||||
- CMSIS-Pack
|
- CMSIS-Pack
|
||||||
|
|
||||||
@@ -614,28 +614,28 @@ Esta lista irá guiá-lo para começar com o LVGL passo a passo.
|
|||||||
`introdução <https://docs.lvgl.io/master/intro/index.html>`__ da
|
`introdução <https://docs.lvgl.io/master/intro/index.html>`__ da
|
||||||
documentação (~5 minutos)
|
documentação (~5 minutos)
|
||||||
3. Familiarize-se com o básico na página de `visão geral
|
3. Familiarize-se com o básico na página de `visão geral
|
||||||
rápida <https://docs.lvgl.io/master/get-started/quick-overview.html>`__
|
rápida <https://docs.lvgl.io/master/intro/overview.html>`__
|
||||||
(~15 minutos)
|
(~15 minutos)
|
||||||
|
|
||||||
**Começando a usar o LVGL**
|
**Começando a usar o LVGL**
|
||||||
|
|
||||||
4. Configure um
|
4. Configure um
|
||||||
`simulador <https://docs.lvgl.io/master/get-started/platforms/pc-simulator.html>`__
|
`simulador <https://docs.lvgl.io/master/details/integration/ide/pc-simulator.html>`__
|
||||||
(~10 minutos)
|
(~10 minutos)
|
||||||
5. Experimente alguns
|
5. Experimente alguns
|
||||||
`exemplos <https://github.com/lvgl/lvgl/tree/master/examples>`__
|
`exemplos <https://github.com/lvgl/lvgl/tree/master/examples>`__
|
||||||
6. Porte o LVGL para uma placa. Veja o guia `portando o
|
6. Porte o LVGL para uma placa. Veja o guia `portando o
|
||||||
LVGL <https://docs.lvgl.io/master/porting/index.html>`__ ou veja um
|
LVGL <https://docs.lvgl.io/master/intro/add-lvgl-to-your-project/index.html>`__ ou veja um
|
||||||
projeto pronto para usar em
|
projeto pronto para usar em
|
||||||
`projetos <https://github.com/lvgl?q=lv_port_>`__
|
`projetos <https://github.com/lvgl?q=lv_port_>`__
|
||||||
|
|
||||||
**Torne-se um profissional**
|
**Torne-se um profissional**
|
||||||
|
|
||||||
7. Leia a página `visão
|
7. Leia a página `visão
|
||||||
geral <https://docs.lvgl.io/master/overview/index.html>`__ para
|
geral <https://docs.lvgl.io/master/details/modules/index.html>`__ para
|
||||||
entender melhor a biblioteca (~2-3 horas)
|
entender melhor a biblioteca (~2-3 horas)
|
||||||
8. Verifique a documentação dos
|
8. Verifique a documentação dos
|
||||||
`widgets <https://docs.lvgl.io/master/widgets/index.html>`__ para ver
|
`widgets <https://docs.lvgl.io/master/details/widgets/index.html>`__ para ver
|
||||||
seus recursos e usabilidade
|
seus recursos e usabilidade
|
||||||
|
|
||||||
**Obtenha ajuda e ajude outras pessoas**
|
**Obtenha ajuda e ajude outras pessoas**
|
||||||
|
|||||||
@@ -72,25 +72,25 @@ RAM 和 128 KB Flash、C 编译器、帧缓冲区和至少 1/10 屏幕大小的
|
|||||||
- 一个完全可移植的 C(C++ 兼容)库,没有外部依赖关系。
|
- 一个完全可移植的 C(C++ 兼容)库,没有外部依赖关系。
|
||||||
- 可以编译到任何 MCU 或 MPU,使用任何 RTOS 或者操作系统。
|
- 可以编译到任何 MCU 或 MPU,使用任何 RTOS 或者操作系统。
|
||||||
- 支持单色、ePaper、OLED、TFT 显示器或者模拟器。
|
- 支持单色、ePaper、OLED、TFT 显示器或者模拟器。
|
||||||
`移植指南 <https://docs.lvgl.io/master/porting/project.html>`__
|
`移植指南 <https://docs.lvgl.io/master/intro/add-lvgl-to-your-project/project.html>`__
|
||||||
- 该项目使用 MIT 许可证,因此您可以在商业项目中轻松使用它。
|
- 该项目使用 MIT 许可证,因此您可以在商业项目中轻松使用它。
|
||||||
- 仅需 32 KB RAM 和 128 KB Flash,一个帧缓冲区,以及至少 1/10 屏幕大小的渲染缓冲区。
|
- 仅需 32 KB RAM 和 128 KB Flash,一个帧缓冲区,以及至少 1/10 屏幕大小的渲染缓冲区。
|
||||||
- 支持使用可选的操作系统、外部存储器和 GPU。
|
- 支持使用可选的操作系统、外部存储器和 GPU。
|
||||||
|
|
||||||
**控件、样式、布局等**
|
**控件、样式、布局等**
|
||||||
|
|
||||||
- 30+ 内置\ `控件 <https://docs.lvgl.io/master/widgets/index.html>`__:
|
- 30+ 内置\ `控件 <https://docs.lvgl.io/master/details/widgets/index.html>`__:
|
||||||
按钮、标签、滑块、图表、键盘、仪表、弧形、表格等等。
|
按钮、标签、滑块、图表、键盘、仪表、弧形、表格等等。
|
||||||
- 灵活的\ `样式系统 <https://docs.lvgl.io/master/overview/style.html>`__
|
- 灵活的\ `样式系统 <https://docs.lvgl.io/master/details/base-widget/styles/style.html>`__
|
||||||
支持约 100 个样式属性,可在任何状态下自定义控件的任何部分。
|
支持约 100 个样式属性,可在任何状态下自定义控件的任何部分。
|
||||||
- `Flex 布局 <https://docs.lvgl.io/master/layouts/flex.html>`__ 和
|
- `Flex 布局 <https://docs.lvgl.io/master/details/base-widget/layouts/flex.html>`__ 和
|
||||||
`Grid 布局 <https://docs.lvgl.io/master/layouts/grid.html>`__
|
`Grid 布局 <https://docs.lvgl.io/master/details/base-widget/layouts/grid.html>`__
|
||||||
可以响应式自动调整控件的大小和位置。
|
可以响应式自动调整控件的大小和位置。
|
||||||
- 文本支持 UTF-8 编码,支持 CJK、泰语、印地语、阿拉伯语和波斯语书写系统。
|
- 文本支持 UTF-8 编码,支持 CJK、泰语、印地语、阿拉伯语和波斯语书写系统。
|
||||||
- 支持自动换行、字距调整、文本滚动、亚像素渲染、拼音输入法、文本表情符号。
|
- 支持自动换行、字距调整、文本滚动、亚像素渲染、拼音输入法、文本表情符号。
|
||||||
- 渲染引擎支持动画、抗锯齿、不透明度、平滑滚动、阴影、图形变换等。
|
- 渲染引擎支持动画、抗锯齿、不透明度、平滑滚动、阴影、图形变换等。
|
||||||
- 支持鼠标、触摸板、小键盘、键盘、外部按钮、编码器\ `输入设备 <https://docs.lvgl.io/master/porting/indev.html>`__\ 。
|
- 支持鼠标、触摸板、小键盘、键盘、外部按钮、编码器\ `输入设备 <https://docs.lvgl.io/master/details/modules/indev.html>`__\ 。
|
||||||
- 支持\ `多显示器 <https://docs.lvgl.io/master/overview/display.html#multiple-display-support>`__\ 。
|
- 支持\ `多显示器 <https://docs.lvgl.io/master/details/modules/display.html#multiple-display-support>`__\ 。
|
||||||
|
|
||||||
**绑定和构建支持**
|
**绑定和构建支持**
|
||||||
|
|
||||||
@@ -99,7 +99,7 @@ RAM 和 128 KB Flash、C 编译器、帧缓冲区和至少 1/10 屏幕大小的
|
|||||||
- `PikaScript 绑定 <https://blog.lvgl.io/2022-08-24/pikascript-and-lvgl>`__
|
- `PikaScript 绑定 <https://blog.lvgl.io/2022-08-24/pikascript-and-lvgl>`__
|
||||||
在 MCU 上的更轻更简单的 Python 版本
|
在 MCU 上的更轻更简单的 Python 版本
|
||||||
- 未使用自定义生成系统。您可以在构建项目的其他文件时构建 LVGL。
|
- 未使用自定义生成系统。您可以在构建项目的其他文件时构建 LVGL。
|
||||||
- 支持开箱即用的 Make 和 \ `CMake <https://docs.lvgl.io/master/integration/building/cmake.html>`__\ 编译系统。
|
- 支持开箱即用的 Make 和 \ `CMake <https://docs.lvgl.io/master/details/integration/building/cmake.html>`__\ 编译系统。
|
||||||
- 支持在 \ `PC 上开发 <https://docs.lvgl.io/master/integration/ide/pc-simulator.html>`__\ ,并可以在嵌入式硬件上使用相同的 UI 代码。
|
- 支持在 \ `PC 上开发 <https://docs.lvgl.io/master/integration/ide/pc-simulator.html>`__\ ,并可以在嵌入式硬件上使用相同的 UI 代码。
|
||||||
- 支持使用我们的 \ `Emscripten 移植 <https://github.com/lvgl/lv_web_emscripten>`__\ 从而将 C 写的 UI 代码转换为 HTML 文件。
|
- 支持使用我们的 \ `Emscripten 移植 <https://github.com/lvgl/lv_web_emscripten>`__\ 从而将 C 写的 UI 代码转换为 HTML 文件。
|
||||||
|
|
||||||
@@ -183,7 +183,7 @@ Hello world 标签
|
|||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
/*Change the active screen's background color*/
|
/* Change Active Screen's background color */
|
||||||
lv_obj_set_style_bg_color(lv_screen_active(), lv_color_hex(0x003a57), LV_PART_MAIN);
|
lv_obj_set_style_bg_color(lv_screen_active(), lv_color_hex(0x003a57), LV_PART_MAIN);
|
||||||
|
|
||||||
/*Create a white label, set its text and align it to the center*/
|
/*Create a white label, set its text and align it to the center*/
|
||||||
@@ -203,7 +203,7 @@ Hello world 标签
|
|||||||
|
|
||||||
.. code-block:: python
|
.. code-block:: python
|
||||||
|
|
||||||
# Change the active screen's background color
|
# Change Active Screen's background color
|
||||||
scr = lv.screen_active()
|
scr = lv.screen_active()
|
||||||
scr.set_style_bg_color(lv.color_hex(0x003a57), lv.PART.MAIN)
|
scr.set_style_bg_color(lv.color_hex(0x003a57), lv.PART.MAIN)
|
||||||
|
|
||||||
@@ -400,7 +400,7 @@ Hello world 标签
|
|||||||
/*Add the style sheet to the slider's INDICATOR part*/
|
/*Add the style sheet to the slider's INDICATOR part*/
|
||||||
lv_obj_add_style(slider, &style_indicator, LV_PART_INDICATOR);
|
lv_obj_add_style(slider, &style_indicator, LV_PART_INDICATOR);
|
||||||
|
|
||||||
/*Add the same style to the KNOB part too and locally overwrite some properties*/
|
/*Add the same style to the KNOB part as well and locally overwrite some properties*/
|
||||||
lv_obj_add_style(slider, &style_indicator, LV_PART_KNOB);
|
lv_obj_add_style(slider, &style_indicator, LV_PART_KNOB);
|
||||||
|
|
||||||
lv_obj_set_style_outline_color(slider, lv_color_hex(0x0096FF), LV_PART_KNOB);
|
lv_obj_set_style_outline_color(slider, lv_color_hex(0x0096FF), LV_PART_KNOB);
|
||||||
@@ -448,7 +448,7 @@ Hello world 标签
|
|||||||
slider.add_style(style_indicator, lv.PART.INDICATOR)
|
slider.add_style(style_indicator, lv.PART.INDICATOR)
|
||||||
slider.add_style(style_indicator, lv.PART.KNOB)
|
slider.add_style(style_indicator, lv.PART.KNOB)
|
||||||
|
|
||||||
# Add the same style to the KNOB part too and locally overwrite some properties
|
# Add the same style to the KNOB part as well and locally overwrite some properties
|
||||||
slider.set_style_outline_color(lv.color_hex(0x0096FF), lv.PART.KNOB)
|
slider.set_style_outline_color(lv.color_hex(0x0096FF), lv.PART.KNOB)
|
||||||
slider.set_style_outline_width(3, lv.PART.KNOB)
|
slider.set_style_outline_width(3, lv.PART.KNOB)
|
||||||
slider.set_style_outline_pad(-5, lv.PART.KNOB)
|
slider.set_style_outline_pad(-5, lv.PART.KNOB)
|
||||||
@@ -540,19 +540,19 @@ Hello world 标签
|
|||||||
|
|
||||||
1. 查看\ `在线演示 <https://lvgl.io/demos>`__\ ,了解 LVGL 的实际操作(3 分钟)
|
1. 查看\ `在线演示 <https://lvgl.io/demos>`__\ ,了解 LVGL 的实际操作(3 分钟)
|
||||||
2. 阅读\ `文档 <https://docs.lvgl.io/master/intro/index.html>`__\ 的简介页(5 分钟)
|
2. 阅读\ `文档 <https://docs.lvgl.io/master/intro/index.html>`__\ 的简介页(5 分钟)
|
||||||
3. 熟悉\ `快速概览 <https://docs.lvgl.io/master/get-started/quick-overview.html>`__
|
3. 熟悉\ `快速概览 <https://docs.lvgl.io/master/intro/overview.html>`__
|
||||||
页面上的基本知识(15 分钟)
|
页面上的基本知识(15 分钟)
|
||||||
|
|
||||||
**开始使用 LVGL**
|
**开始使用 LVGL**
|
||||||
|
|
||||||
4. 设置\ `模拟器 <https://docs.lvgl.io/master/integration/ide/pc-simulator.html#simulator>`__ (10 分钟)
|
4. 设置\ `模拟器 <https://docs.lvgl.io/master/integration/ide/pc-simulator.html#simulator>`__ (10 分钟)
|
||||||
5. 尝试一些\ `示例 <https://github.com/lvgl/lvgl/tree/master/examples>`__
|
5. 尝试一些\ `示例 <https://github.com/lvgl/lvgl/tree/master/examples>`__
|
||||||
6. 将LVGL端口连接到线路板。请参阅\ `移植 <https://docs.lvgl.io/master/porting/index.html>`__\ 指南,或查看现成的\ `项目 <https://github.com/lvgl?q=lv_port_>`__
|
6. 将LVGL端口连接到线路板。请参阅\ `移植 <https://docs.lvgl.io/master/intro/add-lvgl-to-your-project/index.html>`__\ 指南,或查看现成的\ `项目 <https://github.com/lvgl?q=lv_port_>`__
|
||||||
|
|
||||||
**成为专业人士**
|
**成为专业人士**
|
||||||
|
|
||||||
7. 阅读\ `概述 <https://docs.lvgl.io/master/overview/index.html>`__\ 页面以更好地了解图书馆(2-3 小时)
|
7. 阅读\ `概述 <https://docs.lvgl.io/master/details/modules/index.html>`__\ 页面以更好地了解图书馆(2-3 小时)
|
||||||
8. 查看\ `控件 <https://docs.lvgl.io/master/widgets/index.html>`__\ 的文档以查看其功能和用法
|
8. 查看\ `控件 <https://docs.lvgl.io/master/details/widgets/index.html>`__\ 的文档以查看其功能和用法
|
||||||
|
|
||||||
**获得帮助并帮助他人**
|
**获得帮助并帮助他人**
|
||||||
|
|
||||||
|
|||||||
@@ -50,12 +50,12 @@ Architecture
|
|||||||
(see `here <https://github.com/lvgl/lvgl/pull/3390#pullrequestreview-990710921>`__)
|
(see `here <https://github.com/lvgl/lvgl/pull/3390#pullrequestreview-990710921>`__)
|
||||||
- |check| Make LVGL render independent areas in parallel.
|
- |check| Make LVGL render independent areas in parallel.
|
||||||
`#4016 <https://github.com/lvgl/lvgl/issues/4016>`__
|
`#4016 <https://github.com/lvgl/lvgl/issues/4016>`__
|
||||||
- |check| Drop `lv_mem_buf_get` as tlsf should be fast enough for normal allocations too.
|
- |check| Drop `lv_mem_buf_get` as tlsf should be fast enough for normal allocations as well.
|
||||||
Fragmentation is also lower if processes can completely clean up after themselves.
|
Fragmentation is also lower if processes can completely clean up after themselves.
|
||||||
- |check| More color formats: 24 bit, ARGB1555, ARGB4444 etc
|
- |check| More color formats: 24 bit, ARGB1555, ARGB4444 etc
|
||||||
(see `here <https://forum.lvgl.io/t/keypad-input-device-why-lv-event-long-pressed-only-on-enter/10263>`__)
|
(see `here <https://forum.lvgl.io/t/keypad-input-device-why-lv-event-long-pressed-only-on-enter/10263>`__)
|
||||||
- |check| Unified caching #3116 #3415
|
- |check| Unified caching #3116 #3415
|
||||||
- |check| Variable binding. I.e create properties which can be bound to objects and those objects are notified on value change. Maybe based on `lv_msg`?
|
- |check| Variable binding. I.e create properties which can be bound to Widgets and those Widgets are notified on value change. Maybe based on `lv_msg`?
|
||||||
- |uncheck| Add GPU abstraction for display rotation
|
- |uncheck| Add GPU abstraction for display rotation
|
||||||
- |check| Replace the `read_line_cb` of the image decoders with `get_area_cb`
|
- |check| Replace the `read_line_cb` of the image decoders with `get_area_cb`
|
||||||
- |check| Limit the image caching size in bytes instead of image count
|
- |check| Limit the image caching size in bytes instead of image count
|
||||||
@@ -144,7 +144,7 @@ Widgets
|
|||||||
- |uncheck| `lv_bar`, `lv_arc`: handle max < min for fill direction swapping #4039
|
- |uncheck| `lv_bar`, `lv_arc`: handle max < min for fill direction swapping #4039
|
||||||
- |uncheck| `lv_bar`, `lv_slider`, `lv_arc`: make possible to move the knob only inside the background (see `here <https://forum.lvgl.io/t/slider-knob-out-of-the-track/11956>`__)
|
- |uncheck| `lv_bar`, `lv_slider`, `lv_arc`: make possible to move the knob only inside the background (see `here <https://forum.lvgl.io/t/slider-knob-out-of-the-track/11956>`__)
|
||||||
- |uncheck| Improve `lv_label_align_t` #1656
|
- |uncheck| Improve `lv_label_align_t` #1656
|
||||||
- |uncheck| `lv_label` reconsider label long modes. (support min/max-width/height too) #3420
|
- |uncheck| `lv_label` reconsider label long modes. (support min/max-width/height as well) #3420
|
||||||
- |uncheck| `lv_roller` make it more flexible #4009
|
- |uncheck| `lv_roller` make it more flexible #4009
|
||||||
|
|
||||||
Others
|
Others
|
||||||
@@ -164,7 +164,7 @@ Ideas
|
|||||||
- Reconsider how themes should work.
|
- Reconsider how themes should work.
|
||||||
- Better way to reset global variables in `lv_deinit()` #3385
|
- Better way to reset global variables in `lv_deinit()` #3385
|
||||||
- `lv_array`: replace linked lists with array where possible (arrays are faster and uses less memory)
|
- `lv_array`: replace linked lists with array where possible (arrays are faster and uses less memory)
|
||||||
- Reconsider how to handle UTF-8 characters (allow different encoding too) and Bidi. Maybe create an abstraction for textshaping.
|
- Reconsider how to handle UTF-8 characters (allow different encoding as well) and Bidi. Maybe create an abstraction for textshaping.
|
||||||
- Consider direct binary font format support
|
- Consider direct binary font format support
|
||||||
- Improve groups. `Discussion <https://forum.lvgl.io/t/lv-group-tabindex/2927/3>`__.
|
- Improve groups. `Discussion <https://forum.lvgl.io/t/lv-group-tabindex/2927/3>`__.
|
||||||
Reconsider focusing logic. Allow having no widget selected (on web it's possible). Keep editing state in `lv_obj_t`
|
Reconsider focusing logic. Allow having no widget selected (on web it's possible). Keep editing state in `lv_obj_t`
|
||||||
|
|||||||
@@ -37,10 +37,12 @@ class TranslationLinkNodeTransform(SphinxPostTransform):
|
|||||||
(language, link_text) = text.split(':')
|
(language, link_text) = text.split(':')
|
||||||
env = self.document.settings.env
|
env = self.document.settings.env
|
||||||
docname = env.docname
|
docname = env.docname
|
||||||
#doc_path = env.doc2path(docname, False)
|
# doc_path = env.doc2path(docname, False)
|
||||||
urlpath = os.environ['LVGL_URLPATH']+'/'
|
if "LVGL_URLPATH" not in os.environ:
|
||||||
|
os.environ['LVGL_URLPATH'] = 'master'
|
||||||
|
urlpath = os.getenv('LVGL_URLPATH')+'/'
|
||||||
return_path = URL_BASE.get(language, "") + urlpath
|
return_path = URL_BASE.get(language, "") + urlpath
|
||||||
|
|
||||||
url = '{}.html'.format(os.path.join(return_path, docname))
|
url = '{}.html'.format(os.path.join(return_path, docname))
|
||||||
|
|
||||||
node.replace_self(nodes.reference(rawtext, link_text, refuri=url, **options))
|
node.replace_self(nodes.reference(rawtext, link_text, refuri=url, **options))
|
||||||
|
|||||||
@@ -106,7 +106,25 @@ class LvExample(Directive):
|
|||||||
|
|
||||||
def setup(app):
|
def setup(app):
|
||||||
app.add_directive("lv_example", LvExample)
|
app.add_directive("lv_example", LvExample)
|
||||||
app.add_config_value("repo_commit_hash", "", "env")
|
# Direct [View on GitHub] links in examples to use current
|
||||||
|
# branch (stored in LVGL_GITCOMMIT environment variable) instead
|
||||||
|
# of the current commit hash as was being done previously.
|
||||||
|
# Default to 'master' if Sphinx is being run outside of `build.py`.
|
||||||
|
# Resulting example link:
|
||||||
|
# [https://github.com/lvgl/lvgl/blob/master/examples/anim/lv_example_anim_1.c].
|
||||||
|
# [https://github.com/lvgl/lvgl/blob/v8.4.0/examples/anim/lv_example_anim_1.c].
|
||||||
|
# [https://github.com/lvgl/lvgl/blob/v9.2.0/examples/anim/lv_example_anim_1.c].
|
||||||
|
if 'LVGL_GITCOMMIT' in os.environ:
|
||||||
|
git_commit = os.environ['LVGL_GITCOMMIT']
|
||||||
|
else:
|
||||||
|
git_commit = 'master'
|
||||||
|
|
||||||
|
app.add_config_value("repo_commit_hash", git_commit, "env")
|
||||||
|
|
||||||
|
# if 'repo_commit_hash' in app.config._options:
|
||||||
|
# print(f"repo_commit_hash from lv_example.py: [{app.config._options['repo_commit_hash']}]")
|
||||||
|
# else:
|
||||||
|
# print("repo_commit_hash not found in [app.config._options] at this time.")
|
||||||
|
|
||||||
return {
|
return {
|
||||||
'version': '0.1',
|
'version': '0.1',
|
||||||
|
|||||||
|
After Width: | Height: | Size: 127 KiB |
|
Before Width: | Height: | Size: 14 KiB After Width: | Height: | Size: 9.6 KiB |
|
Before Width: | Height: | Size: 18 KiB After Width: | Height: | Size: 9.4 KiB |
|
Before Width: | Height: | Size: 15 KiB After Width: | Height: | Size: 11 KiB |
|
Before Width: | Height: | Size: 16 KiB After Width: | Height: | Size: 12 KiB |
|
Before Width: | Height: | Size: 17 KiB After Width: | Height: | Size: 11 KiB |
@@ -17,25 +17,113 @@ import tempfile
|
|||||||
import config_builder
|
import config_builder
|
||||||
import add_translation
|
import add_translation
|
||||||
|
|
||||||
# due to the modifications that take place to the documentation files
|
# -------------------------------------------------------------------------
|
||||||
|
# Process args.
|
||||||
|
#
|
||||||
|
# Normal usage:
|
||||||
|
# $ python build.py skip_latex
|
||||||
|
#
|
||||||
|
# Other optional arguments are meant for doc development to speed up
|
||||||
|
# turn-around time between doc modification and seeing the final results:
|
||||||
|
#
|
||||||
|
# - skip_api
|
||||||
|
# Skips generating API pages (this saves about 70% of build time).
|
||||||
|
# This is intended to be used only during doc development to speed up
|
||||||
|
# turn-around time between doc modifications and seeing final results.
|
||||||
|
# - no_fresh_env
|
||||||
|
# excludes -E command-line argument to `sphinx-build`, which forces
|
||||||
|
# generating a whole new environment (memory of what was built
|
||||||
|
# previously, forcing a full rebuild). "no_fresh_env" enables a
|
||||||
|
# rebuild of only docs that got updated -- Sphinx's default behavior.
|
||||||
|
# - develop
|
||||||
|
# Leaves temporary directory intact for docs development purposes.
|
||||||
|
# - fixed_tmp_dir
|
||||||
|
# If (fixed_tmp_dir and 'LVGL_FIXED_TEMP_DIR' in os.environ),
|
||||||
|
# then the temporary directory in the value of that environment
|
||||||
|
# variable will be used instead of the normal (randomly-named)
|
||||||
|
# temporary directory. This is important when getting `sphinx-build`
|
||||||
|
# to ONLY rebuild updated documents, since changing the directory
|
||||||
|
# from which they are generated (normally the randomly-named temp
|
||||||
|
# dir) will force Sphinx to do a full-rebuild because it remembers
|
||||||
|
# the doc paths from which the build was last generated.
|
||||||
|
# - docs_dev
|
||||||
|
# Forces "fresh_env" to False, and "fixed_tmp_dir" to True. This is
|
||||||
|
# merely a shortcut to having both "no_fresh_env" and "fixed_tmp_dir"
|
||||||
|
# on the command line.
|
||||||
|
# - skip_trans
|
||||||
|
# Skips adding translation links. This allows direct copying of
|
||||||
|
# of .RST files to `temp_directory` when they are updated to save
|
||||||
|
# time during re-build. Final build must not include this option
|
||||||
|
# so that the translation links are added at the top of each page.
|
||||||
|
#
|
||||||
|
# With arguments [skip_latex, develop, docs_dev], Sphinx will generate
|
||||||
|
# docs from a fixed temporary directory that can be then used later from
|
||||||
|
# the LVGL ./docs/ directory like this:
|
||||||
|
#
|
||||||
|
# $ sphinx-build -b html "fixed_temp_dir" "..\out_html" -D version="9.3" -j cpu_count
|
||||||
|
#
|
||||||
|
# to only rebuild docs that have been updated.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
clean = 0
|
||||||
|
skip_latex = False
|
||||||
|
skip_api = False
|
||||||
|
fresh_env = True
|
||||||
|
develop = False
|
||||||
|
fixed_tmp_dir = False
|
||||||
|
docs_dev = False
|
||||||
|
skip_trans = False
|
||||||
|
args = sys.argv[1:]
|
||||||
|
|
||||||
|
if len(args) >= 1:
|
||||||
|
if "clean" in args:
|
||||||
|
clean = 1
|
||||||
|
if "skip_latex" in args:
|
||||||
|
skip_latex = True
|
||||||
|
if 'skip_api' in args:
|
||||||
|
skip_api = True
|
||||||
|
if 'no_fresh_env' in args:
|
||||||
|
fresh_env = False
|
||||||
|
if 'develop' in args:
|
||||||
|
develop = True
|
||||||
|
if 'fixed_tmp_dir' in args:
|
||||||
|
fixed_tmp_dir = True
|
||||||
|
if 'docs_dev' in args:
|
||||||
|
docs_dev = True
|
||||||
|
if 'skip_trans' in args:
|
||||||
|
skip_trans = True
|
||||||
|
|
||||||
|
# Arg ramifications...
|
||||||
|
# docs_dev implies no fresh_env
|
||||||
|
if docs_dev:
|
||||||
|
fresh_env = False
|
||||||
|
fixed_tmp_dir = True
|
||||||
|
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
# Due to the modifications that take place to the documentation files
|
||||||
# when the documentation builds it is better to copy the source files to a
|
# when the documentation builds it is better to copy the source files to a
|
||||||
# temporary folder and modify the copies. Not setting it up this way makes it
|
# temporary folder and modify the copies. Not setting it up this way makes it
|
||||||
# a real headache when making alterations that need to be committed as the
|
# a real headache when making alterations that need to be committed as the
|
||||||
# alterations trigger the files as changed.
|
# alterations trigger the files as changed. Also, this keeps maintenance
|
||||||
|
# effort to a minimum as adding a new language translation only needs to be
|
||||||
# If there is debugging that needs to be done you can provide a command line
|
# done in 2 places (add_translation.py and ./docs/_ext/link_roles.py) rather
|
||||||
# switch of "develop" and it will leave the temporary directory in tact and
|
# than once for each .rst file.
|
||||||
# that directory will be output at the end of the build.
|
#
|
||||||
|
# The html and PDF output locations are going to remain the same as they were.
|
||||||
# the html and PDF output locations are going to remain the same as they were.
|
|
||||||
# it's just the source documentation files that are going to be copied.
|
# it's just the source documentation files that are going to be copied.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
if fixed_tmp_dir and 'LVGL_FIXED_TEMP_DIR' in os.environ:
|
||||||
|
temp_directory = os.environ['LVGL_FIXED_TEMP_DIR']
|
||||||
|
else:
|
||||||
|
temp_directory = tempfile.mkdtemp(suffix='.lvgl_docs')
|
||||||
|
|
||||||
temp_directory = tempfile.mkdtemp(suffix='.lvgl_docs')
|
print(f'Using temp directory: [{temp_directory}]')
|
||||||
|
|
||||||
langs = ['en']
|
langs = ['en']
|
||||||
|
|
||||||
# Change to script directory for consistency
|
# -------------------------------------------------------------------------
|
||||||
|
# Set up paths.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
base_path = os.path.abspath(os.path.dirname(__file__))
|
base_path = os.path.abspath(os.path.dirname(__file__))
|
||||||
project_path = os.path.abspath(os.path.join(base_path, '..'))
|
project_path = os.path.abspath(os.path.join(base_path, '..'))
|
||||||
examples_path = os.path.join(project_path, 'examples')
|
examples_path = os.path.join(project_path, 'examples')
|
||||||
@@ -48,24 +136,14 @@ pdf_dst_file = os.path.join(temp_directory, 'LVGL.pdf')
|
|||||||
html_src_path = temp_directory
|
html_src_path = temp_directory
|
||||||
html_dst_path = os.path.join(project_path, 'out_html')
|
html_dst_path = os.path.join(project_path, 'out_html')
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
# Change to script directory for consistency.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
os.chdir(base_path)
|
os.chdir(base_path)
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
clean = 0
|
# Provide a way to run an external command and abort build on error.
|
||||||
trans = 0
|
# -------------------------------------------------------------------------
|
||||||
skip_latex = False
|
|
||||||
develop = False
|
|
||||||
args = sys.argv[1:]
|
|
||||||
|
|
||||||
if len(args) >= 1:
|
|
||||||
if "clean" in args:
|
|
||||||
clean = 1
|
|
||||||
if "skip_latex" in args:
|
|
||||||
skip_latex = True
|
|
||||||
if 'develop' in args:
|
|
||||||
develop = True
|
|
||||||
|
|
||||||
|
|
||||||
def cmd(s, start_dir=None):
|
def cmd(s, start_dir=None):
|
||||||
if start_dir is None:
|
if start_dir is None:
|
||||||
start_dir = os.getcwd()
|
start_dir = os.getcwd()
|
||||||
@@ -79,18 +157,32 @@ def cmd(s, start_dir=None):
|
|||||||
os.chdir(saved_dir)
|
os.chdir(saved_dir)
|
||||||
|
|
||||||
if result != 0:
|
if result != 0:
|
||||||
print("Exit build due to previous error")
|
print("Exiting build due to previous error.")
|
||||||
sys.exit(result)
|
sys.exit(result)
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
# Get the current branch name
|
# Get current branch name
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
# 03-Oct-2024: Gabor requested this be changed to a branch name
|
||||||
|
# since that will always be current, and it will fix a large number
|
||||||
|
# of broken links on the docs website. This gets used in the
|
||||||
|
# 'Edit on GitHub' links in the upper-right corner of pages.
|
||||||
|
# Original code:
|
||||||
|
# status, br = subprocess.getstatusoutput("git branch --show-current")
|
||||||
|
# _, gitcommit = subprocess.getstatusoutput("git rev-parse HEAD")
|
||||||
|
# br = re.sub(r'\* ', '', br)
|
||||||
status, br = subprocess.getstatusoutput("git branch --show-current")
|
status, br = subprocess.getstatusoutput("git branch --show-current")
|
||||||
_, gitcommit = subprocess.getstatusoutput("git rev-parse HEAD")
|
|
||||||
br = re.sub(r'\* ', '', br)
|
br = re.sub(r'\* ', '', br)
|
||||||
|
|
||||||
|
# If in an unusual branch that is not 'master' or 'release/...'
|
||||||
|
# then default to 'master'.
|
||||||
|
if '/' in br and 'release' not in br:
|
||||||
|
br = 'master'
|
||||||
|
|
||||||
|
gitcommit = br
|
||||||
urlpath = re.sub('release/', '', br)
|
urlpath = re.sub('release/', '', br)
|
||||||
|
|
||||||
|
# These environment variables are used in other scripts.
|
||||||
os.environ['LVGL_URLPATH'] = urlpath
|
os.environ['LVGL_URLPATH'] = urlpath
|
||||||
os.environ['LVGL_GITCOMMIT'] = gitcommit
|
os.environ['LVGL_GITCOMMIT'] = gitcommit
|
||||||
|
|
||||||
@@ -101,8 +193,9 @@ print("****************")
|
|||||||
print("Building")
|
print("Building")
|
||||||
print("****************")
|
print("****************")
|
||||||
|
|
||||||
|
# Remove all previous output files if 'clean' on command line.
|
||||||
if clean:
|
if clean:
|
||||||
print('cleaning...')
|
print('Removing previous output files...')
|
||||||
# api_path = os.path.join(dname, 'API')
|
# api_path = os.path.join(dname, 'API')
|
||||||
# xml_path = os.path.join(dname, 'xml')
|
# xml_path = os.path.join(dname, 'xml')
|
||||||
# doxy_path = os.path.join(dname, 'doxygen_html')
|
# doxy_path = os.path.join(dname, 'doxygen_html')
|
||||||
@@ -125,11 +218,21 @@ if clean:
|
|||||||
# os.mkdir(api_path)
|
# os.mkdir(api_path)
|
||||||
# os.mkdir(lang)
|
# os.mkdir(lang)
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
# Build local lv_conf.h from lv_conf_template.h for this build only.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
config_builder.run()
|
config_builder.run()
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
# Copy files to 'temp_directory' where they will be edited
|
||||||
|
# (translation link and API links) before being used to generate new docs.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
shutil.copytree('.', temp_directory, dirs_exist_ok=True)
|
shutil.copytree('.', temp_directory, dirs_exist_ok=True)
|
||||||
shutil.copytree(examples_path, os.path.join(temp_directory, 'examples'))
|
shutil.copytree(examples_path, os.path.join(temp_directory, 'examples'), dirs_exist_ok=True)
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
# Replace tokens in Doxyfile in 'temp_directory' with data from this run.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
with open(os.path.join(temp_directory, 'Doxyfile'), 'rb') as f:
|
with open(os.path.join(temp_directory, 'Doxyfile'), 'rb') as f:
|
||||||
data = f.read().decode('utf-8')
|
data = f.read().decode('utf-8')
|
||||||
|
|
||||||
@@ -139,35 +242,69 @@ data = data.replace('*#*#SRC#*#*', '"{0}"'.format(lvgl_src_path))
|
|||||||
with open(os.path.join(temp_directory, 'Doxyfile'), 'wb') as f:
|
with open(os.path.join(temp_directory, 'Doxyfile'), 'wb') as f:
|
||||||
f.write(data.encode('utf-8'))
|
f.write(data.encode('utf-8'))
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
print("Generate the list of examples")
|
# Generate examples pages.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
print("Generating examples...")
|
||||||
ex.exec(temp_directory)
|
ex.exec(temp_directory)
|
||||||
|
|
||||||
print("Add translation")
|
if skip_trans:
|
||||||
add_translation.exec(temp_directory)
|
print("Skipping translation links as requested.")
|
||||||
|
else:
|
||||||
|
# ---------------------------------------------------------------------
|
||||||
|
# Add translation links at top of all .rst files.
|
||||||
|
# ---------------------------------------------------------------------
|
||||||
|
print("Adding translation links...")
|
||||||
|
add_translation.exec(temp_directory)
|
||||||
|
|
||||||
print("Running doxygen")
|
if skip_api:
|
||||||
cmd('doxygen Doxyfile', temp_directory)
|
print("Skipping API generation as requested.")
|
||||||
|
else:
|
||||||
|
# ---------------------------------------------------------------------
|
||||||
|
# Generate API pages and links thereto.
|
||||||
|
# ---------------------------------------------------------------------
|
||||||
|
print("Running Doxygen...")
|
||||||
|
cmd('doxygen Doxyfile', temp_directory)
|
||||||
|
print("Generating API documentation .RST files...")
|
||||||
|
|
||||||
print('Reading Doxygen output')
|
doc_builder.EMIT_WARNINGS = False
|
||||||
|
|
||||||
doc_builder.EMIT_WARNINGS = False
|
# Create .RST files for API pages.
|
||||||
|
doc_builder.run(
|
||||||
|
project_path,
|
||||||
|
temp_directory,
|
||||||
|
os.path.join(temp_directory, 'intro'),
|
||||||
|
os.path.join(temp_directory, 'intro', 'add-lvgl-to-your-project'),
|
||||||
|
os.path.join(temp_directory, 'details'),
|
||||||
|
os.path.join(temp_directory, 'details', 'base-widget'),
|
||||||
|
os.path.join(temp_directory, 'details', 'base-widget', 'layouts'),
|
||||||
|
os.path.join(temp_directory, 'details', 'base-widget', 'styles'),
|
||||||
|
os.path.join(temp_directory, 'details', 'debugging'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'bindings'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'building'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'chip'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'driver'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'driver', 'display'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'driver', 'touchpad'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'framework'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'ide'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'os'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'os', 'yocto'),
|
||||||
|
os.path.join(temp_directory, 'details', 'integration', 'renderers'),
|
||||||
|
os.path.join(temp_directory, 'details', 'libs'),
|
||||||
|
os.path.join(temp_directory, 'details', 'main-components'),
|
||||||
|
os.path.join(temp_directory, 'details', 'other-components'),
|
||||||
|
os.path.join(temp_directory, 'details', 'widgets')
|
||||||
|
)
|
||||||
|
|
||||||
doc_builder.run(
|
print('Reading Doxygen output...')
|
||||||
project_path,
|
|
||||||
temp_directory,
|
|
||||||
os.path.join(temp_directory, 'layouts'),
|
|
||||||
os.path.join(temp_directory, 'libs'),
|
|
||||||
os.path.join(temp_directory, 'others'),
|
|
||||||
os.path.join(temp_directory, 'overview'),
|
|
||||||
os.path.join(temp_directory, 'overview', 'renderers'),
|
|
||||||
os.path.join(temp_directory, 'porting'),
|
|
||||||
os.path.join(temp_directory, 'widgets')
|
|
||||||
)
|
|
||||||
|
|
||||||
# we make sure to remove the link to the PDF before the PDF get generated
|
# -------------------------------------------------------------------------
|
||||||
|
# We make sure to remove the link to the PDF before the PDF get generated
|
||||||
# doesn't make any sense to have a link to the PDF in the PDF. The link gets
|
# doesn't make any sense to have a link to the PDF in the PDF. The link gets
|
||||||
# added if there is a PDF build so the HTML build will have the link.
|
# added if there is a PDF build so the HTML build will have the link.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
index_path = os.path.join(temp_directory, 'index.rst')
|
index_path = os.path.join(temp_directory, 'index.rst')
|
||||||
|
|
||||||
with open(index_path, 'rb') as f:
|
with open(index_path, 'rb') as f:
|
||||||
@@ -181,11 +318,12 @@ if 'PDF version: :download:`LVGL.pdf <LVGL.pdf>`' in index_data:
|
|||||||
with open(index_path, 'wb') as f:
|
with open(index_path, 'wb') as f:
|
||||||
f.write(index_data.encode('utf-8'))
|
f.write(index_data.encode('utf-8'))
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
# BUILD PDF
|
# BUILD PDF
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
if skip_latex:
|
if skip_latex:
|
||||||
print("skipping latex build as requested")
|
print("Skipping latex build as requested.")
|
||||||
else:
|
else:
|
||||||
|
|
||||||
# Silly workaround to include the more or less correct
|
# Silly workaround to include the more or less correct
|
||||||
# PDF download link in the PDF
|
# PDF download link in the PDF
|
||||||
# cmd("cp -f " + lang +"/latex/LVGL.pdf LVGL.pdf | true")
|
# cmd("cp -f " + lang +"/latex/LVGL.pdf LVGL.pdf | true")
|
||||||
@@ -212,9 +350,10 @@ else:
|
|||||||
with open(index_path, 'wb') as f:
|
with open(index_path, 'wb') as f:
|
||||||
f.write(index_data.encode('utf-8'))
|
f.write(index_data.encode('utf-8'))
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
# BUILD HTML
|
# BUILD HTML
|
||||||
# This version of get_version() works correctly under Windows and Linux.
|
# -------------------------------------------------------------------------
|
||||||
# Credit: @kdschlosser
|
# This version of get_version() also works correctly under Windows.
|
||||||
def get_version():
|
def get_version():
|
||||||
path = os.path.join(project_path, 'lv_version.h')
|
path = os.path.join(project_path, 'lv_version.h')
|
||||||
with open(path, 'rb') as fle:
|
with open(path, 'rb') as fle:
|
||||||
@@ -230,17 +369,39 @@ def get_version():
|
|||||||
|
|
||||||
return f'{major.strip()}.{minor.strip()}'
|
return f'{major.strip()}.{minor.strip()}'
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
cmd('sphinx-build -b html "{src}" "{dst}" -D version="{version}" -E -j {cpu}'.format(
|
# Run Sphinx after determining whether to use -E (fresh environment)
|
||||||
src=html_src_path,
|
# command-line argument.
|
||||||
dst=html_dst_path,
|
# -------------------------------------------------------------------------
|
||||||
version=get_version(),
|
if fresh_env:
|
||||||
cpu=os.cpu_count()
|
# Uses -E option (same as --fresh-env). Forces sphinx-build to rebuild sphinx
|
||||||
))
|
# environment so that all docs are fully regenerated, even if they have not changed.
|
||||||
|
print("Regenerating all files...")
|
||||||
if develop:
|
cmd('sphinx-build -b html "{src}" "{dst}" -D version="{version}" -E -j {cpu}'.format(
|
||||||
print('temp directory:', temp_directory)
|
src=html_src_path,
|
||||||
|
dst=html_dst_path,
|
||||||
|
version=get_version(),
|
||||||
|
cpu=os.cpu_count()
|
||||||
|
))
|
||||||
else:
|
else:
|
||||||
|
# Does not use -E option (same as --fresh-env).
|
||||||
|
print("Regenerating only updated files...")
|
||||||
|
cmd('sphinx-build -b html "{src}" "{dst}" -D version="{version}" -j {cpu}'.format(
|
||||||
|
src=html_src_path,
|
||||||
|
dst=html_dst_path,
|
||||||
|
version=get_version(),
|
||||||
|
cpu=os.cpu_count()
|
||||||
|
))
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
# If 'develop' was specified on command line, announce location of temp dir.
|
||||||
|
# Otherwise, remove temporary files created for the doc build.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
if develop:
|
||||||
|
print('Temp directory: ', temp_directory)
|
||||||
|
else:
|
||||||
|
print('Removing temporary files...', temp_directory)
|
||||||
|
# Recursively remove generated files in `temp_directory`.
|
||||||
def iter_temp(p):
|
def iter_temp(p):
|
||||||
folders = []
|
folders = []
|
||||||
remove_folder = True
|
remove_folder = True
|
||||||
@@ -268,7 +429,13 @@ else:
|
|||||||
|
|
||||||
iter_temp(temp_directory)
|
iter_temp(temp_directory)
|
||||||
|
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
# Remove temporary `lv_conf.h` created for this build.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
config_builder.cleanup()
|
config_builder.cleanup()
|
||||||
|
|
||||||
print('output path:', html_dst_path)
|
# -------------------------------------------------------------------------
|
||||||
print('\nFINISHED!!')
|
# Indicate results.
|
||||||
|
# -------------------------------------------------------------------------
|
||||||
|
print('Output path: ', html_dst_path)
|
||||||
|
print('Finished.')
|
||||||
|
|||||||
@@ -44,7 +44,8 @@ extensions = [
|
|||||||
'sphinx_design',
|
'sphinx_design',
|
||||||
'sphinx_rtd_dark_mode',
|
'sphinx_rtd_dark_mode',
|
||||||
'link_roles',
|
'link_roles',
|
||||||
'sphinxcontrib.mermaid'
|
'sphinxcontrib.mermaid',
|
||||||
|
'sphinx_reredirects'
|
||||||
]
|
]
|
||||||
|
|
||||||
default_dark_mode = False
|
default_dark_mode = False
|
||||||
@@ -61,7 +62,7 @@ highlight_language = 'c'
|
|||||||
# The suffix(es) of source filenames.
|
# The suffix(es) of source filenames.
|
||||||
# You can specify multiple suffix as a list of string:
|
# You can specify multiple suffix as a list of string:
|
||||||
#
|
#
|
||||||
source_suffix = ['.rst']
|
source_suffix = {'.rst': 'restructuredtext'}
|
||||||
|
|
||||||
|
|
||||||
# The master toctree document.
|
# The master toctree document.
|
||||||
@@ -78,7 +79,8 @@ author = 'LVGL community'
|
|||||||
# built documents.
|
# built documents.
|
||||||
#
|
#
|
||||||
# The short X.Y version.
|
# The short X.Y version.
|
||||||
# embeddedt: extract using scripts/find_version.sh
|
# `version` is extracted from lv_version.h using a cross-platform compatible
|
||||||
|
# Python function in build.py, and passed in on `sphinx-build` command line.
|
||||||
|
|
||||||
version = ''
|
version = ''
|
||||||
|
|
||||||
@@ -114,9 +116,12 @@ html_theme = 'sphinx_rtd_theme'
|
|||||||
# documentation.
|
# documentation.
|
||||||
#
|
#
|
||||||
|
|
||||||
|
# Note: 'display_version' option is now obsolete in the current (08-Oct-2024)
|
||||||
|
# version of sphinx-rtd-theme (upgraded for Sphinx v8.x). The removed line is
|
||||||
|
# preserved by commenting it out in case it is ever needed again.
|
||||||
|
|
||||||
html_theme_options = {
|
html_theme_options = {
|
||||||
'display_version': True,
|
# 'display_version': True,
|
||||||
'prev_next_buttons_location': 'both',
|
'prev_next_buttons_location': 'both',
|
||||||
'style_external_links': False,
|
'style_external_links': False,
|
||||||
# 'vcs_pageview_mode': '',
|
# 'vcs_pageview_mode': '',
|
||||||
@@ -133,7 +138,12 @@ html_theme_options = {
|
|||||||
|
|
||||||
|
|
||||||
# For site map generation
|
# For site map generation
|
||||||
html_baseurl = f"https://docs.lvgl.io/{os.environ['LVGL_URLPATH']}/"
|
if "LVGL_URLPATH" not in os.environ:
|
||||||
|
os.environ['LVGL_URLPATH'] = 'master'
|
||||||
|
|
||||||
|
_branch = os.getenv('LVGL_URLPATH')
|
||||||
|
html_baseurl = f"https://docs.lvgl.io/{_branch}/"
|
||||||
|
|
||||||
|
|
||||||
sitemap_url_scheme = "{link}"
|
sitemap_url_scheme = "{link}"
|
||||||
|
|
||||||
@@ -141,8 +151,13 @@ sitemap_url_scheme = "{link}"
|
|||||||
|
|
||||||
#extlinks = {'github_link_base': (github_url + '%s', github_url)}
|
#extlinks = {'github_link_base': (github_url + '%s', github_url)}
|
||||||
|
|
||||||
|
if "LVGL_GITCOMMIT" not in os.environ:
|
||||||
|
os.environ['LVGL_GITCOMMIT'] = 'master'
|
||||||
|
|
||||||
|
_git_commit_ref = os.getenv('LVGL_GITCOMMIT')
|
||||||
|
|
||||||
html_context = {
|
html_context = {
|
||||||
'github_version': os.environ['LVGL_GITCOMMIT'],
|
'github_version': _git_commit_ref,
|
||||||
'github_user': 'lvgl',
|
'github_user': 'lvgl',
|
||||||
'github_repo': 'lvgl',
|
'github_repo': 'lvgl',
|
||||||
'display_github': True,
|
'display_github': True,
|
||||||
@@ -260,10 +275,30 @@ StandaloneHTMLBuilder.supported_image_types = [
|
|||||||
'image/jpeg'
|
'image/jpeg'
|
||||||
]
|
]
|
||||||
|
|
||||||
smartquotes = False
|
|
||||||
|
|
||||||
repo_commit_hash = os.environ['LVGL_GITCOMMIT']
|
# Enabling smart quotes action to convert -- to en dashes and --- to em dashes.
|
||||||
|
# Converting quotation marks and ellipses is NOT done because the default
|
||||||
|
# `smartquotes_action` 'qDe' is changed to just 'D' below, which accomplishes
|
||||||
|
# the dash conversions as desired.
|
||||||
|
smartquotes = True
|
||||||
|
smartquotes_action = 'D'
|
||||||
|
|
||||||
|
repo_commit_hash = _git_commit_ref
|
||||||
|
|
||||||
|
# -- Options for sphinx_reredirects ---------------------------------------
|
||||||
|
|
||||||
|
# The below generates .HTML page redirects for pages that have been moved.
|
||||||
|
# Browsers are redirected via `<meta http-equiv="refresh" content="0; url=new_url">`.
|
||||||
|
redirects = {
|
||||||
|
"get-started/index": "../intro/basics.html#going-deeper" ,
|
||||||
|
"integration/index": "../details/integration/index.html" ,
|
||||||
|
"porting/index": "../intro/add-lvgl-to-your-project/index.html",
|
||||||
|
"overview/index": "../details/main-components/index.html" ,
|
||||||
|
"layouts/index": "../details/base-widget/layouts/index.html" ,
|
||||||
|
"libs/index": "../details/libs/index.html" ,
|
||||||
|
"others/index": "../details/other-components/index.html"
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
# Example configuration for intersphinx: refer to the Python standard library.
|
# Example configuration for intersphinx: refer to the Python standard library.
|
||||||
|
|
||||||
@@ -275,3 +310,5 @@ def setup(app):
|
|||||||
# app.add_transform(AutoStructify)
|
# app.add_transform(AutoStructify)
|
||||||
app.add_css_file('css/custom.css')
|
app.add_css_file('css/custom.css')
|
||||||
app.add_css_file('css/fontawesome.min.css')
|
app.add_css_file('css/fontawesome.min.css')
|
||||||
|
|
||||||
|
|
||||||
|
|||||||
@@ -1,4 +1,12 @@
|
|||||||
|
"""
|
||||||
|
Create lv_conf.h in same directory as this file
|
||||||
|
from ../lv_conf_template.h that has:
|
||||||
|
|
||||||
|
1. all its #define LV_USE... 0-or-1 options set to 1
|
||||||
|
(except for LV_USER_PROFILER),
|
||||||
|
2. all its #define LV_FONT... 0-or-1 options set to 1,
|
||||||
|
3. its #if 0 directive set to #if 1.
|
||||||
|
"""
|
||||||
import os
|
import os
|
||||||
|
|
||||||
base_path = os.path.dirname(__file__)
|
base_path = os.path.dirname(__file__)
|
||||||
@@ -25,7 +33,7 @@ def run(c_path=None):
|
|||||||
if 'LV_USE_PROFILER' in line:
|
if 'LV_USE_PROFILER' in line:
|
||||||
continue
|
continue
|
||||||
|
|
||||||
if 'LV_USE' in line or 'LV_FONT' in line and '#define' in line:
|
if 'LV_USE' in line or ('LV_FONT' in line and '#define' in line):
|
||||||
line = [item for item in line.split(' ') if item]
|
line = [item for item in line.split(' ') if item]
|
||||||
|
|
||||||
for j, item in enumerate(line):
|
for j, item in enumerate(line):
|
||||||
|
|||||||
@@ -5,27 +5,30 @@ Events
|
|||||||
======
|
======
|
||||||
|
|
||||||
Events are triggered in LVGL when something happens which might be
|
Events are triggered in LVGL when something happens which might be
|
||||||
interesting to the user, e.g. when an object:
|
interesting to the user, e.g. when a Widget:
|
||||||
|
|
||||||
- is clicked
|
- is clicked
|
||||||
- is scrolled
|
- is scrolled
|
||||||
- has its value changed
|
- has its value changed
|
||||||
- is redrawn, etc.
|
- is redrawn, etc.
|
||||||
|
|
||||||
Besides widgets, events can registered from displays and input devices too.
|
Besides Widgets, events can registered from displays and input devices as well.
|
||||||
It's not detailed below, however the same applies to displays and indevs as well
|
It is not detailed below, but you can do this by changing the prefix of the functions
|
||||||
by changing the prefix of the functions from ``lv_obj_`` to ``lv_display_`` or ``lv_indev_``.
|
from ``lv_obj_`` to ``lv_display_`` or ``lv_indev_``.
|
||||||
|
|
||||||
Add events to a widget
|
|
||||||
**********************
|
|
||||||
|
|
||||||
The user can assign callback functions to an object to see its events.
|
.. _adding_events_to_a_widget:
|
||||||
|
|
||||||
|
Adding Events to a Widget
|
||||||
|
*************************
|
||||||
|
|
||||||
|
The user can assign callback functions to a widget to process events.
|
||||||
In practice, it looks like this:
|
In practice, it looks like this:
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
lv_obj_t * btn = lv_button_create(lv_screen_active());
|
lv_obj_t * btn = lv_button_create(lv_screen_active());
|
||||||
lv_obj_add_event_cb(btn, my_event_cb, LV_EVENT_CLICKED, NULL); /*Assign an event callback*/
|
lv_obj_add_event_cb(btn, my_event_cb, LV_EVENT_CLICKED, user_data); /* Assign an event callback */
|
||||||
|
|
||||||
...
|
...
|
||||||
|
|
||||||
@@ -39,30 +42,37 @@ call ``my_event_cb``. See the :ref:`list of event codes <events_codes>` for
|
|||||||
all the options. :cpp:enumerator:`LV_EVENT_ALL` can be used to receive all events.
|
all the options. :cpp:enumerator:`LV_EVENT_ALL` can be used to receive all events.
|
||||||
|
|
||||||
The last parameter of :cpp:func:`lv_obj_add_event` is a pointer to any custom
|
The last parameter of :cpp:func:`lv_obj_add_event` is a pointer to any custom
|
||||||
data that will be available in the event. It will be described later in
|
data that will be available in the event. NULL may be passed for this argument if
|
||||||
more detail.
|
there is no need to use that data when the event is processed. You can retrieve the
|
||||||
|
pointer passed when setting the callback function like this:
|
||||||
More events can be added to an object, like this:
|
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
lv_obj_add_event_cb(obj, my_event_cb_1, LV_EVENT_CLICKED, NULL);
|
my_user_data_t * user_data;
|
||||||
lv_obj_add_event_cb(obj, my_event_cb_2, LV_EVENT_PRESSED, NULL);
|
...
|
||||||
lv_obj_add_event_cb(obj, my_event_cb_3, LV_EVENT_ALL, NULL); /*No filtering, receive all events*/
|
user_data = lv_event_get_user_data(e);
|
||||||
|
|
||||||
Even the same event callback can be used on an object with different
|
More events can be added to a Widget, like this:
|
||||||
|
|
||||||
|
.. code-block:: c
|
||||||
|
|
||||||
|
lv_obj_add_event_cb(widget, my_event_cb_1, LV_EVENT_CLICKED, NULL);
|
||||||
|
lv_obj_add_event_cb(widget, my_event_cb_2, LV_EVENT_PRESSED, NULL);
|
||||||
|
lv_obj_add_event_cb(widget, my_event_cb_3, LV_EVENT_ALL, NULL); /* No filtering, receive all events */
|
||||||
|
|
||||||
|
Even the same event callback can be used on a Widget with different
|
||||||
``user_data``. For example:
|
``user_data``. For example:
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
lv_obj_add_event_cb(obj, increment_on_click, LV_EVENT_CLICKED, &num1);
|
lv_obj_add_event_cb(widget, increment_on_click, LV_EVENT_CLICKED, &num1);
|
||||||
lv_obj_add_event_cb(obj, increment_on_click, LV_EVENT_CLICKED, &num2);
|
lv_obj_add_event_cb(widget, increment_on_click, LV_EVENT_CLICKED, &num2);
|
||||||
|
|
||||||
The events will be called in the order as they were added.
|
The events will be called in the order as they were added.
|
||||||
|
|
||||||
Other objects can use the same *event callback*.
|
Other Widgets can use the same *event callback*.
|
||||||
|
|
||||||
In the very same way events can attached to the input devices and displays like this
|
In the very same way, events can be attached to input devices and displays like this:
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
@@ -70,30 +80,31 @@ In the very same way events can attached to the input devices and displays like
|
|||||||
lv_indev_add_event_cb(indev, event_cb, LV_EVENT_CLICKED, NULL);
|
lv_indev_add_event_cb(indev, event_cb, LV_EVENT_CLICKED, NULL);
|
||||||
|
|
||||||
|
|
||||||
Remove event(s) from widgets
|
Removing Event(s) from Widgets
|
||||||
****************************
|
******************************
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
uint32_t i;
|
uint32_t i;
|
||||||
uint32_t event_cnt = lv_obj_get_event_count(obj);
|
uint32_t event_cnt = lv_obj_get_event_count(widget);
|
||||||
for(i = 0; i < event_cnt; i++) {
|
for(i = 0; i < event_cnt; i++) {
|
||||||
lv_event_dsc_t * event_dsc = lv_obj_get_event_dsc(obj, i);
|
lv_event_dsc_t * event_dsc = lv_obj_get_event_dsc(widget, i);
|
||||||
if(lv_event_dsc_get_cb(event_dsc) == some_event_cb) {
|
if(lv_event_dsc_get_cb(event_dsc) == some_event_cb) {
|
||||||
lv_obj_remove_event(obj, i);
|
lv_obj_remove_event(widget, i);
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
.. _events_codes:
|
.. _events_codes:
|
||||||
|
|
||||||
Event codes
|
Event Codes
|
||||||
***********
|
***********
|
||||||
|
|
||||||
The event codes can be grouped into these categories: - Input device
|
The event codes can be grouped into these categories: - Input device
|
||||||
events - Drawing events - Other events - Special events - Custom events
|
events - Drawing events - Other events - Special events - Custom events
|
||||||
|
|
||||||
All objects (such as Buttons/Labels/Sliders etc.) regardless their type
|
All Widgets (such as Buttons/Labels/Sliders etc.) regardless their type
|
||||||
receive the *Input device*, *Drawing* and *Other* events.
|
receive the *Input device*, *Drawing* and *Other* events.
|
||||||
|
|
||||||
However, the *Special events* are specific to a particular widget type.
|
However, the *Special events* are specific to a particular widget type.
|
||||||
@@ -104,40 +115,39 @@ are sent,
|
|||||||
|
|
||||||
The following event codes exist:
|
The following event codes exist:
|
||||||
|
|
||||||
|
Input Device Events
|
||||||
Input device events
|
|
||||||
-------------------
|
-------------------
|
||||||
|
|
||||||
- :cpp:enumerator:`LV_EVENT_PRESSED`: The object has been pressed
|
- :cpp:enumerator:`LV_EVENT_PRESSED`: Widget has been pressed
|
||||||
- :cpp:enumerator:`LV_EVENT_PRESSING`: The object is being pressed (called continuously while pressing)
|
- :cpp:enumerator:`LV_EVENT_PRESSING`: Widget is being pressed (called continuously while pressing)
|
||||||
- :cpp:enumerator:`LV_EVENT_PRESS_LOST`: The object is still being pressed but slid cursor/finger off of the object
|
- :cpp:enumerator:`LV_EVENT_PRESS_LOST`: Widget is still being pressed but slid cursor/finger off Widget
|
||||||
- :cpp:enumerator:`LV_EVENT_SHORT_CLICKED`: The object was pressed for a short period of time, and then released without scrolling.
|
- :cpp:enumerator:`LV_EVENT_SHORT_CLICKED`: Widget was pressed for a short period of time, and then released without scrolling.
|
||||||
- :cpp:enumerator:`LV_EVENT_SINGLE_CLICKED`: The object was pressed for a short period of time, and then released without scrolling, for the first time in a click streak. A click streak refers to multiple short clicks within a short period of time and a small distance.
|
- :cpp:enumerator:`LV_EVENT_SINGLE_CLICKED`: Widget was pressed for a short period of time, and then released without scrolling, for the first time in a click streak. A click streak refers to multiple short clicks within a short period of time and a small distance.
|
||||||
- :cpp:enumerator:`LV_EVENT_DOUBLE_CLICKED`: The object was pressed for a short period of time, and then released without scrolling, for the second time in a click streak.
|
- :cpp:enumerator:`LV_EVENT_DOUBLE_CLICKED`: Widget was pressed for a short period of time, and then released without scrolling, for the second time in a click streak.
|
||||||
- :cpp:enumerator:`LV_EVENT_TRIPLE_CLICKED`: The object was pressed for a short period of time, and then released without scrolling, for the third time in a click streak.
|
- :cpp:enumerator:`LV_EVENT_TRIPLE_CLICKED`: Widget was pressed for a short period of time, and then released without scrolling, for the third time in a click streak.
|
||||||
- :cpp:enumerator:`LV_EVENT_LONG_PRESSED`: Object has been pressed for at least `long_press_time`. Not called if scrolled.
|
- :cpp:enumerator:`LV_EVENT_LONG_PRESSED`: Widget has been pressed for at least `long_press_time`. Not called if scrolled.
|
||||||
- :cpp:enumerator:`LV_EVENT_LONG_PRESSED_REPEAT`: Called after `long_press_time` in every `long_press_repeat_time` ms. Not called if scrolled.
|
- :cpp:enumerator:`LV_EVENT_LONG_PRESSED_REPEAT`: Called after `long_press_time` in every `long_press_repeat_time` ms. Not called if scrolled.
|
||||||
- :cpp:enumerator:`LV_EVENT_CLICKED`: Called on release if not scrolled (regardless of long press)
|
- :cpp:enumerator:`LV_EVENT_CLICKED`: Called on release if not scrolled (regardless of long press)
|
||||||
- :cpp:enumerator:`LV_EVENT_RELEASED`: Called in every cases when the object has been released
|
- :cpp:enumerator:`LV_EVENT_RELEASED`: Called in every cases when Widget has been released
|
||||||
- :cpp:enumerator:`LV_EVENT_SCROLL_BEGIN`: Scrolling begins. The event parameter is a pointer to the animation of the scroll. Can be modified
|
- :cpp:enumerator:`LV_EVENT_SCROLL_BEGIN`: Scrolling begins. The event parameter is a pointer to the animation of the scroll. Can be modified
|
||||||
- :cpp:enumerator:`LV_EVENT_SCROLL_THROW_BEGIN`:
|
- :cpp:enumerator:`LV_EVENT_SCROLL_THROW_BEGIN`:
|
||||||
- :cpp:enumerator:`LV_EVENT_SCROLL_END`: Scrolling ends
|
- :cpp:enumerator:`LV_EVENT_SCROLL_END`: Scrolling ends
|
||||||
- :cpp:enumerator:`LV_EVENT_SCROLL`: Scrolling
|
- :cpp:enumerator:`LV_EVENT_SCROLL`: Scrolling
|
||||||
- :cpp:enumerator:`LV_EVENT_GESTURE`: A gesture is detected. Get the gesture with :cpp:expr:`lv_indev_get_gesture_dir(lv_indev_active())`
|
- :cpp:enumerator:`LV_EVENT_GESTURE`: A gesture is detected. Get the gesture with :cpp:expr:`lv_indev_get_gesture_dir(lv_indev_active())`
|
||||||
- :cpp:enumerator:`LV_EVENT_KEY`: A key is sent to the object. Get the key with :cpp:expr:`lv_indev_get_key(lv_indev_active())`
|
- :cpp:enumerator:`LV_EVENT_KEY`: A key is sent to Widget. Get the key with :cpp:expr:`lv_indev_get_key(lv_indev_active())`
|
||||||
- :cpp:enumerator:`LV_EVENT_FOCUSED`: The object is focused
|
- :cpp:enumerator:`LV_EVENT_FOCUSED`: Widget received focus
|
||||||
- :cpp:enumerator:`LV_EVENT_DEFOCUSED`: The object is defocused
|
- :cpp:enumerator:`LV_EVENT_DEFOCUSED`: Widget is defocused
|
||||||
- :cpp:enumerator:`LV_EVENT_LEAVE`: The object is defocused but still selected
|
- :cpp:enumerator:`LV_EVENT_LEAVE`: Widget is defocused but still selected
|
||||||
- :cpp:enumerator:`LV_EVENT_HIT_TEST`: Perform advanced hit-testing
|
- :cpp:enumerator:`LV_EVENT_HIT_TEST`: Perform advanced hit-testing
|
||||||
- :cpp:enumerator:`LV_EVENT_INDEV_RESET`: Indev has been reset
|
- :cpp:enumerator:`LV_EVENT_INDEV_RESET`: Indev has been reset
|
||||||
- :cpp:enumerator:`LV_EVENT_HOVER_OVER`: Indev hover over object
|
- :cpp:enumerator:`LV_EVENT_HOVER_OVER`: Indev hover over Widget
|
||||||
- :cpp:enumerator:`LV_EVENT_HOVER_LEAVE`: Indev hover leave object
|
- :cpp:enumerator:`LV_EVENT_HOVER_LEAVE`: Indev hover leave Widget
|
||||||
|
|
||||||
Drawing Events
|
Drawing Events
|
||||||
--------------
|
--------------
|
||||||
|
|
||||||
- :cpp:enumerator:`LV_EVENT_COVER_CHECK`: Check if the object fully covers an area. The event parameter is :cpp:type:`lv_cover_check_info_t` ``*``.
|
- :cpp:enumerator:`LV_EVENT_COVER_CHECK`: Check if Widget fully covers an area. The event parameter is :cpp:type:`lv_cover_check_info_t` ``*``.
|
||||||
- :cpp:enumerator:`LV_EVENT_REFR_EXT_DRAW_SIZE`: Get the required extra draw area around the object (e.g. for shadow). The event parameter is :cpp:type:`int32_t` ``*`` to store the size.
|
- :cpp:enumerator:`LV_EVENT_REFR_EXT_DRAW_SIZE`: Get the required extra draw area around Widget (e.g. for shadow). The event parameter is :cpp:type:`int32_t` ``*`` to store the size.
|
||||||
- :cpp:enumerator:`LV_EVENT_DRAW_MAIN_BEGIN`: Starting the main drawing phase
|
- :cpp:enumerator:`LV_EVENT_DRAW_MAIN_BEGIN`: Starting the main drawing phase
|
||||||
- :cpp:enumerator:`LV_EVENT_DRAW_MAIN`: Perform the main drawing
|
- :cpp:enumerator:`LV_EVENT_DRAW_MAIN`: Perform the main drawing
|
||||||
- :cpp:enumerator:`LV_EVENT_DRAW_MAIN_END`: Finishing the main drawing phase
|
- :cpp:enumerator:`LV_EVENT_DRAW_MAIN_END`: Finishing the main drawing phase
|
||||||
@@ -146,20 +156,20 @@ Drawing Events
|
|||||||
- :cpp:enumerator:`LV_EVENT_DRAW_POST_END`: Finishing the post draw phase (when all children are drawn)
|
- :cpp:enumerator:`LV_EVENT_DRAW_POST_END`: Finishing the post draw phase (when all children are drawn)
|
||||||
- :cpp:enumerator:`LV_EVENT_DRAW_TASK_ADDED`: Adding a draw task
|
- :cpp:enumerator:`LV_EVENT_DRAW_TASK_ADDED`: Adding a draw task
|
||||||
|
|
||||||
Special events
|
Special Events
|
||||||
--------------
|
--------------
|
||||||
|
|
||||||
- :cpp:enumerator:`LV_EVENT_VALUE_CHANGED`: The object's value has changed (i.e. slider moved)
|
- :cpp:enumerator:`LV_EVENT_VALUE_CHANGED`: Widget's value has changed (i.e. slider moved)
|
||||||
- :cpp:enumerator:`LV_EVENT_INSERT`: A text is inserted to the object. The event data is :cpp:type:`char` ``*`` being inserted.
|
- :cpp:enumerator:`LV_EVENT_INSERT`: A text is inserted to Widget. The event data is ``char `*`` being inserted.
|
||||||
- :cpp:enumerator:`LV_EVENT_REFRESH`: Notify the object to refresh something on it (for the user)
|
- :cpp:enumerator:`LV_EVENT_REFRESH`: Notify Widget to refresh something on it (for the user)
|
||||||
- :cpp:enumerator:`LV_EVENT_READY`: A process has finished
|
- :cpp:enumerator:`LV_EVENT_READY`: A process has finished
|
||||||
- :cpp:enumerator:`LV_EVENT_CANCEL`: A process has been cancelled
|
- :cpp:enumerator:`LV_EVENT_CANCEL`: A process has been cancelled
|
||||||
|
|
||||||
Other events
|
Other Events
|
||||||
------------
|
------------
|
||||||
|
|
||||||
- :cpp:enumerator:`LV_EVENT_CREATE`: Object is being created
|
- :cpp:enumerator:`LV_EVENT_CREATE`: Widget is being created
|
||||||
- :cpp:enumerator:`LV_EVENT_DELETE`: Object is being deleted
|
- :cpp:enumerator:`LV_EVENT_DELETE`: Widget is being deleted
|
||||||
- :cpp:enumerator:`LV_EVENT_CHILD_CHANGED`: Child was removed, added, or its size, position were changed
|
- :cpp:enumerator:`LV_EVENT_CHILD_CHANGED`: Child was removed, added, or its size, position were changed
|
||||||
- :cpp:enumerator:`LV_EVENT_CHILD_CREATED`: Child was created, always bubbles up to all parents
|
- :cpp:enumerator:`LV_EVENT_CHILD_CREATED`: Child was created, always bubbles up to all parents
|
||||||
- :cpp:enumerator:`LV_EVENT_CHILD_DELETED`: Child was deleted, always bubbles up to all parents
|
- :cpp:enumerator:`LV_EVENT_CHILD_DELETED`: Child was deleted, always bubbles up to all parents
|
||||||
@@ -167,12 +177,12 @@ Other events
|
|||||||
- :cpp:enumerator:`LV_EVENT_SCREEN_LOAD_START`: A screen load started, fired when the screen change delay is expired
|
- :cpp:enumerator:`LV_EVENT_SCREEN_LOAD_START`: A screen load started, fired when the screen change delay is expired
|
||||||
- :cpp:enumerator:`LV_EVENT_SCREEN_LOADED`: A screen was loaded
|
- :cpp:enumerator:`LV_EVENT_SCREEN_LOADED`: A screen was loaded
|
||||||
- :cpp:enumerator:`LV_EVENT_SCREEN_UNLOADED`: A screen was unloaded
|
- :cpp:enumerator:`LV_EVENT_SCREEN_UNLOADED`: A screen was unloaded
|
||||||
- :cpp:enumerator:`LV_EVENT_SIZE_CHANGED`: Object coordinates/size have changed
|
- :cpp:enumerator:`LV_EVENT_SIZE_CHANGED`: Widget coordinates/size have changed
|
||||||
- :cpp:enumerator:`LV_EVENT_STYLE_CHANGED`: Object's style has changed
|
- :cpp:enumerator:`LV_EVENT_STYLE_CHANGED`: Widget's style has changed
|
||||||
- :cpp:enumerator:`LV_EVENT_LAYOUT_CHANGED`: The children position has changed due to a layout recalculation
|
- :cpp:enumerator:`LV_EVENT_LAYOUT_CHANGED`: The children position has changed due to a layout recalculation
|
||||||
- :cpp:enumerator:`LV_EVENT_GET_SELF_SIZE`: Get the internal size of a widget
|
- :cpp:enumerator:`LV_EVENT_GET_SELF_SIZE`: Get the internal size of a widget
|
||||||
|
|
||||||
Display events
|
Display Events
|
||||||
--------------
|
--------------
|
||||||
|
|
||||||
- :cpp:enumerator:`LV_EVENT_INVALIDATE_AREA`
|
- :cpp:enumerator:`LV_EVENT_INVALIDATE_AREA`
|
||||||
@@ -187,44 +197,47 @@ Display events
|
|||||||
- :cpp:enumerator:`LV_EVENT_FLUSH_FINISH`
|
- :cpp:enumerator:`LV_EVENT_FLUSH_FINISH`
|
||||||
|
|
||||||
|
|
||||||
Custom events
|
Custom Events
|
||||||
-------------
|
-------------
|
||||||
|
|
||||||
Any number of custom event codes can be registered by
|
Any number of custom event codes can be registered by
|
||||||
``uint32_t MY_EVENT_1 =`` :cpp:func:`lv_event_register_id`
|
``uint32_t MY_EVENT_1 =`` :cpp:func:`lv_event_register_id`
|
||||||
|
|
||||||
They can be sent to any objects with
|
They can be sent to any Widget with
|
||||||
:cpp:expr:`lv_obj_send_event(obj, MY_EVENT_1, &some_data)`
|
:cpp:expr:`lv_obj_send_event(widget, MY_EVENT_1, &some_data)`
|
||||||
|
|
||||||
Sending events
|
|
||||||
**************
|
|
||||||
|
|
||||||
To manually send events to an object, use
|
Refresh Event
|
||||||
``lv_obj_send_event(obj, <EVENT_CODE>, &some_data)``.
|
-------------
|
||||||
|
|
||||||
|
:cpp:enumerator:`LV_EVENT_REFRESH` is a special event because it's designed to let the
|
||||||
|
user notify a Widget to refresh itself. Some examples:
|
||||||
|
|
||||||
|
- notify a label to refresh its text according to one or more variables (e.g. current time)
|
||||||
|
- refresh a label when the language changes
|
||||||
|
- enable a button if some conditions are met (e.g. the correct PIN is entered)
|
||||||
|
- add/remove styles to/from a Widget if a limit is exceeded, etc
|
||||||
|
|
||||||
|
|
||||||
|
Sending Events Manually
|
||||||
|
***********************
|
||||||
|
|
||||||
|
To manually send events to a Widget, use
|
||||||
|
``lv_obj_send_event(widget, <EVENT_CODE>, &some_data)``.
|
||||||
|
|
||||||
For example, this can be used to manually close a message box by
|
For example, this can be used to manually close a message box by
|
||||||
simulating a button press (although there are simpler ways to do this):
|
simulating a button press (although there are simpler ways to do this):
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
/*Simulate the press of the first button (indexes start from zero)*/
|
/* Simulate the press of the first button (indexes start from zero) */
|
||||||
uint32_t btn_id = 0;
|
uint32_t btn_id = 0;
|
||||||
lv_obj_send_event(mbox, LV_EVENT_VALUE_CHANGED, &btn_id);
|
lv_obj_send_event(mbox, LV_EVENT_VALUE_CHANGED, &btn_id);
|
||||||
|
|
||||||
The same works for display and input devices with
|
The same works for display and input devices with
|
||||||
``lv_display_send_event(obj, <EVENT_CODE>, &some_data)`` and
|
``lv_display_send_event(widget, <EVENT_CODE>, &some_data)`` and
|
||||||
``lv_indev_send_event(obj, <EVENT_CODE>, &some_data)``.
|
``lv_indev_send_event(widget, <EVENT_CODE>, &some_data)``.
|
||||||
|
|
||||||
Refresh event
|
|
||||||
-------------
|
|
||||||
|
|
||||||
:cpp:enumerator:`LV_EVENT_REFRESH` is a special event because it's designed to let the
|
|
||||||
user notify an object to refresh itself. Some examples:
|
|
||||||
|
|
||||||
- notify a label to refresh its text according to one or more variables (e.g. current time)
|
|
||||||
- refresh a label when the language changes
|
|
||||||
- enable a button if some conditions are met (e.g. the correct PIN is entered)
|
|
||||||
- add/remove styles to/from an object if a limit is exceeded, etc
|
|
||||||
|
|
||||||
Fields of lv_event_t
|
Fields of lv_event_t
|
||||||
********************
|
********************
|
||||||
@@ -233,31 +246,34 @@ Fields of lv_event_t
|
|||||||
contains all data about the event. The following values can be gotten from it:
|
contains all data about the event. The following values can be gotten from it:
|
||||||
|
|
||||||
- :cpp:expr:`lv_event_get_code(e)`: get the event code
|
- :cpp:expr:`lv_event_get_code(e)`: get the event code
|
||||||
- :cpp:expr:`lv_event_get_current_target(e)`: get the object to which an event was sent. I.e. the object whose event handler is being called.
|
- :cpp:expr:`lv_event_get_current_target(e)`: get Widget to which an event was sent. I.e. the Widget whose event handler is being called.
|
||||||
- :cpp:expr:`lv_event_get_target(e)`: get the object that originally triggered the event (different from :cpp:func:`lv_event_get_target` if :ref:`event bubbling <event_bubbling>` is enabled)
|
- :cpp:expr:`lv_event_get_target(e)`: get Widget that originally triggered the event (different from :cpp:func:`lv_event_get_target` if :ref:`event bubbling <event_bubbling>` is enabled)
|
||||||
- :cpp:expr:`lv_event_get_user_data(e)`: get the pointer passed as the last parameter of :cpp:func:`lv_obj_add_event`.
|
- :cpp:expr:`lv_event_get_user_data(e)`: get the pointer passed as the last parameter of :cpp:func:`lv_obj_add_event`.
|
||||||
- :cpp:expr:`lv_event_get_param(e)`: get the parameter passed as the last parameter of :cpp:func:`lv_obj_send_event`
|
- :cpp:expr:`lv_event_get_param(e)`: get the parameter passed as the last parameter of :cpp:func:`lv_obj_send_event`
|
||||||
|
|
||||||
.. _event_bubbling:
|
.. _event_bubbling:
|
||||||
|
|
||||||
Event bubbling
|
|
||||||
|
Event Bubbling
|
||||||
**************
|
**************
|
||||||
|
|
||||||
If :cpp:expr:`lv_obj_add_flag(obj, LV_OBJ_FLAG_EVENT_BUBBLE)` is enabled all
|
If :cpp:expr:`lv_obj_add_flag(widget, LV_OBJ_FLAG_EVENT_BUBBLE)` is enabled all
|
||||||
events will be sent to an object's parent too. If the parent also has
|
events will be sent to a Widget's parent as well. If the parent also has
|
||||||
:cpp:enumerator:`LV_OBJ_FLAG_EVENT_BUBBLE` enabled the event will be sent to its
|
:cpp:enumerator:`LV_OBJ_FLAG_EVENT_BUBBLE` enabled the event will be sent to its
|
||||||
parent and so on.
|
parent, and so on.
|
||||||
|
|
||||||
The *target* parameter of the event is always the current target object,
|
The *target* parameter of the event is always the current target Widget,
|
||||||
not the original object. To get the original target call
|
not the original Widget. To get the original target call
|
||||||
:cpp:expr:`lv_event_get_target_obj(e)` in the event handler.
|
:cpp:expr:`lv_event_get_target_obj(e)` in the event handler.
|
||||||
|
|
||||||
.. _events_examples:
|
.. _events_examples:
|
||||||
|
|
||||||
|
|
||||||
Examples
|
Examples
|
||||||
********
|
********
|
||||||
|
|
||||||
.. include:: ../examples/event/index.rst
|
.. include:: ../../examples/event/index.rst
|
||||||
|
|
||||||
|
|
||||||
.. _events_api:
|
.. _events_api:
|
||||||
|
|
||||||
@@ -0,0 +1,18 @@
|
|||||||
|
.. _base_widget_overview:
|
||||||
|
|
||||||
|
===========
|
||||||
|
Base Widget
|
||||||
|
===========
|
||||||
|
|
||||||
|
The following details apply to all types of Widgets.
|
||||||
|
|
||||||
|
.. toctree::
|
||||||
|
:maxdepth: 3
|
||||||
|
|
||||||
|
obj
|
||||||
|
coord
|
||||||
|
layer
|
||||||
|
styles/index
|
||||||
|
event
|
||||||
|
layouts/index
|
||||||
|
scroll
|
||||||
@@ -0,0 +1,126 @@
|
|||||||
|
.. _layers:
|
||||||
|
|
||||||
|
======
|
||||||
|
Layers
|
||||||
|
======
|
||||||
|
|
||||||
|
When the term "layer" is used in LVGL documentation, it may refer to one of several
|
||||||
|
things:
|
||||||
|
|
||||||
|
1. for Widgets, the :ref:`layers_creation` creates a natural layering of Widgets;
|
||||||
|
2. in the context of pixel rendering (drawing), there are :ref:`draw_layers`;
|
||||||
|
3. permanent :ref:`screen_layers` are part of each :ref:`display` object, and
|
||||||
|
are covered :ref:`here <screen_layers>`
|
||||||
|
|
||||||
|
#1 and #2 are covered below.
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
.. _layers_creation:
|
||||||
|
|
||||||
|
Order of Creation
|
||||||
|
*****************
|
||||||
|
|
||||||
|
By default, LVGL draws new Widgets on top of old Widgets.
|
||||||
|
|
||||||
|
For example, assume we add a button to a parent Widget named button1 and
|
||||||
|
then another button named button2. Then button1 (along with its child
|
||||||
|
Widget(s)) will be in the background and can be covered by button2 and
|
||||||
|
its children.
|
||||||
|
|
||||||
|
.. image:: /misc/layers.png
|
||||||
|
|
||||||
|
.. code-block:: c
|
||||||
|
|
||||||
|
/* Create a screen */
|
||||||
|
lv_obj_t * scr = lv_obj_create(NULL, NULL);
|
||||||
|
lv_screen_load(scr); /* Load the screen */
|
||||||
|
|
||||||
|
/* Create 2 buttons */
|
||||||
|
lv_obj_t * btn1 = lv_button_create(scr, NULL); /* Create a button on the screen */
|
||||||
|
lv_button_set_fit(btn1, true, true); /* Enable automatically setting the size according to content */
|
||||||
|
lv_obj_set_pos(btn1, 60, 40); /* Set the position of the button */
|
||||||
|
|
||||||
|
lv_obj_t * btn2 = lv_button_create(scr, btn1); /* Copy the first button */
|
||||||
|
lv_obj_set_pos(btn2, 180, 80); /* Set the position of the button */
|
||||||
|
|
||||||
|
/* Add labels to the buttons */
|
||||||
|
lv_obj_t * label1 = lv_label_create(btn1, NULL); /* Create a label on the first button */
|
||||||
|
lv_label_set_text(label1, "Button 1"); /* Set the text of the label */
|
||||||
|
|
||||||
|
lv_obj_t * label2 = lv_label_create(btn2, NULL); /* Create a label on the second button */
|
||||||
|
lv_label_set_text(label2, "Button 2"); /* Set the text of the label */
|
||||||
|
|
||||||
|
/* Delete the second label */
|
||||||
|
lv_obj_delete(label2);
|
||||||
|
|
||||||
|
.. _layers_order:
|
||||||
|
|
||||||
|
Changing Order
|
||||||
|
--------------
|
||||||
|
|
||||||
|
There are four explicit ways to bring a Widget to the foreground:
|
||||||
|
|
||||||
|
- Use :cpp:expr:`lv_obj_move_foreground(widget)` to bring a Widget to the foreground.
|
||||||
|
Similarly, use :cpp:expr:`lv_obj_move_background(widget)` to move it to the background.
|
||||||
|
- Use :cpp:expr:`lv_obj_move_to_index(widget, idx)` to move a Widget to a given index in the order of children.
|
||||||
|
|
||||||
|
- ``0``: background
|
||||||
|
- ``child_num - 1``: foreground
|
||||||
|
- ``< 0``: count from the top, to move forward (up): :cpp:expr:`lv_obj_move_to_index(widget, lv_obj_get_index(widget) - 1)`
|
||||||
|
|
||||||
|
- Use :cpp:expr:`lv_obj_swap(widget1, widget2)` to swap the relative layer position of two Widgets.
|
||||||
|
- When :cpp:expr:`lv_obj_set_parent(widget, new_parent)` is used, ``widget`` will be on the foreground of ``new_parent``.
|
||||||
|
|
||||||
|
|
||||||
|
.. _draw_layers:
|
||||||
|
|
||||||
|
Draw Layers
|
||||||
|
***********
|
||||||
|
|
||||||
|
Some style properties cause LVGL to allocate a buffer and render a Widget and its
|
||||||
|
children there first. Later that layer will be merged to the screen or its parent
|
||||||
|
layer after applying some transformations or other modifications.
|
||||||
|
|
||||||
|
Simple Layer
|
||||||
|
------------
|
||||||
|
|
||||||
|
The following style properties trigger the creation of a "Simple Layer":
|
||||||
|
|
||||||
|
- ``opa_layered``
|
||||||
|
- ``bitmap_mask_src``
|
||||||
|
- ``blend_mode``
|
||||||
|
|
||||||
|
In this case the Widget will be sliced into ``LV_DRAW_SW_LAYER_SIMPLE_BUF_SIZE``
|
||||||
|
sized chunks.
|
||||||
|
|
||||||
|
If there is no memory for a new chunk, LVGL will try allocating the layer after
|
||||||
|
another chunk is rendered and freed.
|
||||||
|
|
||||||
|
Transformed Layer
|
||||||
|
-----------------
|
||||||
|
|
||||||
|
When the widget is transformed a larger part of the Widget needs to rendered to
|
||||||
|
provide enough data for transformation. LVGL tries to render as small area of the
|
||||||
|
widget as possible, but due to the nature of transformations no slicing is possible
|
||||||
|
in this case.
|
||||||
|
|
||||||
|
The following style properties trigger the creation of a "Transform Layer":
|
||||||
|
|
||||||
|
- ``transform_scale_x``
|
||||||
|
- ``transform_scale_y``
|
||||||
|
- ``transform_skew_x``
|
||||||
|
- ``transform_skew_y``
|
||||||
|
- ``transform_rotate``
|
||||||
|
|
||||||
|
Clip corner
|
||||||
|
-----------
|
||||||
|
|
||||||
|
The ``clip_corner`` style property also causes LVGL to create a 2 layers with radius
|
||||||
|
height for the top and bottom parts of the Widget.
|
||||||
|
|
||||||
|
|
||||||
|
.. _layers_api:
|
||||||
|
|
||||||
|
API
|
||||||
|
***
|
||||||
@@ -14,8 +14,8 @@ adjust the spacing between the items and tracks, handle *grow* to make
|
|||||||
the item(s) fill the remaining space with respect to min/max width and
|
the item(s) fill the remaining space with respect to min/max width and
|
||||||
height.
|
height.
|
||||||
|
|
||||||
To make an object flex container call
|
To make a Widget flex container call
|
||||||
:cpp:expr:`lv_obj_set_layout(obj, LV_LAYOUT_FLEX)`.
|
:cpp:expr:`lv_obj_set_layout(widget, LV_LAYOUT_FLEX)`.
|
||||||
|
|
||||||
Note that the flex layout feature of LVGL needs to be globally enabled
|
Note that the flex layout feature of LVGL needs to be globally enabled
|
||||||
with :c:macro:`LV_USE_FLEX` in ``lv_conf.h``.
|
with :c:macro:`LV_USE_FLEX` in ``lv_conf.h``.
|
||||||
@@ -43,7 +43,7 @@ With the following functions you can set a Flex layout on any parent.
|
|||||||
Flex flow
|
Flex flow
|
||||||
---------
|
---------
|
||||||
|
|
||||||
:cpp:expr:`lv_obj_set_flex_flow(obj, flex_flow)`
|
:cpp:expr:`lv_obj_set_flex_flow(widget, flex_flow)`
|
||||||
|
|
||||||
The possible values for ``flex_flow`` are:
|
The possible values for ``flex_flow`` are:
|
||||||
|
|
||||||
@@ -62,7 +62,7 @@ Flex align
|
|||||||
----------
|
----------
|
||||||
|
|
||||||
To manage the placement of the children use
|
To manage the placement of the children use
|
||||||
:cpp:expr:`lv_obj_set_flex_align(obj, main_place, cross_place, track_cross_place)`
|
:cpp:expr:`lv_obj_set_flex_align(widget, main_place, cross_place, track_cross_place)`
|
||||||
|
|
||||||
- ``main_place`` determines how to distribute the items in their track
|
- ``main_place`` determines how to distribute the items in their track
|
||||||
on the main axis. E.g. flush the items to the right on :cpp:enumerator:`LV_FLEX_FLOW_ROW_WRAP`. (It's called
|
on the main axis. E.g. flush the items to the right on :cpp:enumerator:`LV_FLEX_FLOW_ROW_WRAP`. (It's called
|
||||||
@@ -99,7 +99,7 @@ Flex grow
|
|||||||
Flex grow can be used to make one or more children fill the available
|
Flex grow can be used to make one or more children fill the available
|
||||||
space on the track. When more children have grow parameters, the
|
space on the track. When more children have grow parameters, the
|
||||||
available space will be distributed proportionally to the grow values.
|
available space will be distributed proportionally to the grow values.
|
||||||
For example, there is 400 px remaining space and 4 objects with grow:
|
For example, there is 400 px remaining space and 4 Widgets with grow:
|
||||||
|
|
||||||
- ``A`` with grow = 1
|
- ``A`` with grow = 1
|
||||||
- ``B`` with grow = 1
|
- ``B`` with grow = 1
|
||||||
@@ -132,7 +132,7 @@ The following flex related style properties exist:
|
|||||||
Internal padding
|
Internal padding
|
||||||
----------------
|
----------------
|
||||||
|
|
||||||
To modify the minimum space flexbox inserts between objects, the
|
To modify the minimum space flexbox inserts between Widgets, the
|
||||||
following properties can be set on the flex container style:
|
following properties can be set on the flex container style:
|
||||||
|
|
||||||
- ``pad_row`` Sets the padding between the rows.
|
- ``pad_row`` Sets the padding between the rows.
|
||||||
@@ -140,7 +140,7 @@ following properties can be set on the flex container style:
|
|||||||
- ``pad_column`` Sets the padding between the columns.
|
- ``pad_column`` Sets the padding between the columns.
|
||||||
|
|
||||||
These can for example be used if you don't want any padding between your
|
These can for example be used if you don't want any padding between your
|
||||||
objects: :cpp:expr:`lv_style_set_pad_column(&row_container_style,0)`
|
Widgets: :cpp:expr:`lv_style_set_pad_column(&row_container_style,0)`
|
||||||
|
|
||||||
.. _flex_other:
|
.. _flex_other:
|
||||||
|
|
||||||
@@ -170,7 +170,7 @@ You can force Flex to put an item into a new line with
|
|||||||
Example
|
Example
|
||||||
*******
|
*******
|
||||||
|
|
||||||
.. include:: ../examples/layouts/flex/index.rst
|
.. include:: ../../../examples/layouts/flex/index.rst
|
||||||
|
|
||||||
.. _flex_api:
|
.. _flex_api:
|
||||||
|
|
||||||
@@ -15,7 +15,7 @@ track's size can be set in pixel, to the largest item
|
|||||||
(:c:macro:`LV_GRID_CONTENT`) or in "Free unit" (FR) to distribute the free
|
(:c:macro:`LV_GRID_CONTENT`) or in "Free unit" (FR) to distribute the free
|
||||||
space proportionally.
|
space proportionally.
|
||||||
|
|
||||||
To make an object a grid container call :cpp:expr:`lv_obj_set_layout(obj, LV_LAYOUT_GRID)`.
|
To make a Widget a grid container call :cpp:expr:`lv_obj_set_layout(widget, LV_LAYOUT_GRID)`.
|
||||||
|
|
||||||
Note that the grid layout feature of LVGL needs to be globally enabled
|
Note that the grid layout feature of LVGL needs to be globally enabled
|
||||||
with :c:macro:`LV_USE_GRID` in ``lv_conf.h``.
|
with :c:macro:`LV_USE_GRID` in ``lv_conf.h``.
|
||||||
@@ -47,11 +47,11 @@ For example:
|
|||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
static int32_t column_dsc[] = {100, 400, LV_GRID_TEMPLATE_LAST}; /*2 columns with 100 and 400 ps width*/
|
static int32_t column_dsc[] = {100, 400, LV_GRID_TEMPLATE_LAST}; /* 2 columns with 100 and 400 ps width */
|
||||||
static int32_t row_dsc[] = {100, 100, 100, LV_GRID_TEMPLATE_LAST}; /*3 100 px tall rows*/
|
static int32_t row_dsc[] = {100, 100, 100, LV_GRID_TEMPLATE_LAST}; /* 3 100 px tall rows */
|
||||||
|
|
||||||
To set the descriptors on a parent use
|
To set the descriptors on a parent use
|
||||||
:cpp:expr:`lv_obj_set_grid_dsc_array(obj, col_dsc, row_dsc)`.
|
:cpp:expr:`lv_obj_set_grid_dsc_array(widget, col_dsc, row_dsc)`.
|
||||||
|
|
||||||
Besides simple settings the size in pixel you can use two special
|
Besides simple settings the size in pixel you can use two special
|
||||||
values:
|
values:
|
||||||
@@ -105,7 +105,7 @@ If there are some empty space the track can be aligned several ways:
|
|||||||
item on the end line. Not applies to ``track_cross_place``.
|
item on the end line. Not applies to ``track_cross_place``.
|
||||||
|
|
||||||
To set the track's alignment use
|
To set the track's alignment use
|
||||||
:cpp:expr:`lv_obj_set_grid_align(obj, column_align, row_align)`.
|
:cpp:expr:`lv_obj_set_grid_align(widget, column_align, row_align)`.
|
||||||
|
|
||||||
.. _grid_subgrid:
|
.. _grid_subgrid:
|
||||||
|
|
||||||
@@ -151,7 +151,7 @@ The following Grid related style properties exist:
|
|||||||
Internal padding
|
Internal padding
|
||||||
----------------
|
----------------
|
||||||
|
|
||||||
To modify the minimum space Grid inserts between objects, the following
|
To modify the minimum space Grid inserts between Widgets, the following
|
||||||
properties can be set on the Grid container style:
|
properties can be set on the Grid container style:
|
||||||
|
|
||||||
- ``pad_row`` Sets the padding between the rows.
|
- ``pad_row`` Sets the padding between the rows.
|
||||||
@@ -176,7 +176,7 @@ The columns will be placed from right to left.
|
|||||||
Example
|
Example
|
||||||
*******
|
*******
|
||||||
|
|
||||||
.. include:: ../examples/layouts/grid/index.rst
|
.. include:: ../../../examples/layouts/grid/index.rst
|
||||||
|
|
||||||
.. _grid_api:
|
.. _grid_api:
|
||||||
|
|
||||||
@@ -1,22 +1,24 @@
|
|||||||
.. _scroll:
|
.. _scrolling:
|
||||||
|
|
||||||
|
=========
|
||||||
|
Scrolling
|
||||||
|
=========
|
||||||
|
|
||||||
======
|
|
||||||
Scroll
|
|
||||||
======
|
|
||||||
|
|
||||||
Overview
|
Overview
|
||||||
********
|
********
|
||||||
|
|
||||||
In LVGL scrolling works very intuitively: if an object is outside its
|
In LVGL scrolling works very intuitively: if a Widget is outside its
|
||||||
parent content area (the size without padding), the parent becomes
|
parent content area (the size without padding), the parent becomes
|
||||||
scrollable and scrollbar(s) will appear. That's it.
|
scrollable and scrollbar(s) will appear. That's it.
|
||||||
|
|
||||||
Any object can be scrollable including ``lv_obj``, ``lv_image``,
|
Any Widget can be scrollable including :ref:`base_widget`, ``lv_image``,
|
||||||
``lv_button``, ``lv_meter``, etc
|
``lv_button``, ``lv_meter``, etc
|
||||||
|
|
||||||
The object can either be scrolled horizontally or vertically in one
|
The Widget can either be scrolled horizontally or vertically in one
|
||||||
stroke; diagonal scrolling is not possible.
|
stroke; diagonal scrolling is not possible.
|
||||||
|
|
||||||
|
|
||||||
Scrollbar
|
Scrollbar
|
||||||
---------
|
---------
|
||||||
|
|
||||||
@@ -28,10 +30,10 @@ following ``mode``\ (s) exist:
|
|||||||
|
|
||||||
- :cpp:enumerator:`LV_SCROLLBAR_MODE_OFF`: Never show the scrollbars
|
- :cpp:enumerator:`LV_SCROLLBAR_MODE_OFF`: Never show the scrollbars
|
||||||
- :cpp:enumerator:`LV_SCROLLBAR_MODE_ON`: Always show the scrollbars
|
- :cpp:enumerator:`LV_SCROLLBAR_MODE_ON`: Always show the scrollbars
|
||||||
- :cpp:enumerator:`LV_SCROLLBAR_MODE_ACTIVE`: Show scroll bars while an object is being scrolled
|
- :cpp:enumerator:`LV_SCROLLBAR_MODE_ACTIVE`: Show scroll bars while a Widget is being scrolled
|
||||||
- :cpp:enumerator:`LV_SCROLLBAR_MODE_AUTO`: Show scroll bars when the content is large enough to be scrolled
|
- :cpp:enumerator:`LV_SCROLLBAR_MODE_AUTO`: Show scroll bars when the content is large enough to be scrolled
|
||||||
|
|
||||||
``lv_obj_set_scrollbar_mode(obj, LV_SCROLLBAR_MODE_...)`` sets the scrollbar mode on an object.
|
:cpp:expr:`lv_obj_set_scrollbar_mode(widget, LV_SCROLLBAR_MODE_...)` sets the scrollbar mode on a Widget.
|
||||||
|
|
||||||
Styling
|
Styling
|
||||||
^^^^^^^
|
^^^^^^^
|
||||||
@@ -48,12 +50,12 @@ this:
|
|||||||
|
|
||||||
...
|
...
|
||||||
|
|
||||||
lv_obj_add_style(obj, &style_red, LV_PART_SCROLLBAR);
|
lv_obj_add_style(widget, &style_red, LV_PART_SCROLLBAR);
|
||||||
|
|
||||||
An object goes to the :cpp:enumerator:`LV_STATE_SCROLLED` state while it's being
|
A Widget goes to the :cpp:enumerator:`LV_STATE_SCROLLED` state while it's being
|
||||||
scrolled. This allows adding different styles to the scrollbar or the
|
scrolled. This allows adding different styles to the scrollbar or the
|
||||||
object itself when scrolled. This code makes the scrollbar blue when the
|
Widget itself when scrolled. This code makes the scrollbar blue when the
|
||||||
object is scrolled:
|
Widget is scrolled:
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
@@ -63,22 +65,23 @@ object is scrolled:
|
|||||||
|
|
||||||
...
|
...
|
||||||
|
|
||||||
lv_obj_add_style(obj, &style_blue, LV_STATE_SCROLLED | LV_PART_SCROLLBAR);
|
lv_obj_add_style(widget, &style_blue, LV_STATE_SCROLLED | LV_PART_SCROLLBAR);
|
||||||
|
|
||||||
If the base direction of the :cpp:enumerator:`LV_PART_SCROLLBAR` is RTL
|
If the base direction of the :cpp:enumerator:`LV_PART_SCROLLBAR` is RTL
|
||||||
(:c:macro:`LV_BASE_DIR_RTL`) the vertical scrollbar will be placed on the left.
|
(:c:macro:`LV_BASE_DIR_RTL`) the vertical scrollbar will be placed on the left.
|
||||||
Note that, the ``base_dir`` style property is inherited. Therefore, it
|
Note that, the ``base_dir`` style property is inherited. Therefore, it
|
||||||
can be set directly on the :cpp:enumerator:`LV_PART_SCROLLBAR` part of an object or on
|
can be set directly on the :cpp:enumerator:`LV_PART_SCROLLBAR` part of a Widget or on
|
||||||
the object's or any parent's main part to make a scrollbar inherit the
|
the Widget's or any parent's main part to make a scrollbar inherit the
|
||||||
base direction.
|
base direction.
|
||||||
|
|
||||||
``pad_left/right/top/bottom`` sets the spacing around the scrollbars and
|
``pad_left/right/top/bottom`` sets the spacing around the scrollbars and
|
||||||
``width`` sets the scrollbar's width.
|
``width`` sets the scrollbar's width.
|
||||||
|
|
||||||
|
|
||||||
.. _scroll_events:
|
.. _scroll_events:
|
||||||
|
|
||||||
Events
|
Scrolling Events
|
||||||
------
|
----------------
|
||||||
|
|
||||||
The following events are related to scrolling:
|
The following events are related to scrolling:
|
||||||
|
|
||||||
@@ -87,10 +90,6 @@ The following events are related to scrolling:
|
|||||||
- :cpp:enumerator:`LV_EVENT_SCROLL_END`: Scrolling ends.
|
- :cpp:enumerator:`LV_EVENT_SCROLL_END`: Scrolling ends.
|
||||||
- :cpp:enumerator:`LV_EVENT_SCROLL`: Scroll happened. Triggered on every position change. Scroll events
|
- :cpp:enumerator:`LV_EVENT_SCROLL`: Scroll happened. Triggered on every position change. Scroll events
|
||||||
|
|
||||||
Basic example
|
|
||||||
*************
|
|
||||||
|
|
||||||
TODO
|
|
||||||
|
|
||||||
Features of scrolling
|
Features of scrolling
|
||||||
*********************
|
*********************
|
||||||
@@ -101,13 +100,14 @@ useful additional features.
|
|||||||
Scrollable
|
Scrollable
|
||||||
----------
|
----------
|
||||||
|
|
||||||
It's possible to make an object non-scrollable with
|
It's possible to make a Widget non-scrollable with
|
||||||
:cpp:expr:`lv_obj_remove_flag(obj, LV_OBJ_FLAG_SCROLLABLE)`.
|
:cpp:expr:`lv_obj_remove_flag(widget, LV_OBJ_FLAG_SCROLLABLE)`.
|
||||||
|
|
||||||
Non-scrollable objects can still propagate the scrolling (chain) to
|
Non-scrollable Widgets can still propagate the scrolling (chain) to
|
||||||
their parents.
|
their parents.
|
||||||
|
|
||||||
The direction in which scrolling happens can be controlled by ``lv_obj_set_scroll_dir(obj, LV_DIR_...)``.
|
The direction in which scrolling happens can be controlled by
|
||||||
|
:cpp:expr:`lv_obj_set_scroll_dir(widget, LV_DIR_...)`.
|
||||||
|
|
||||||
The following values are possible for the direction:
|
The following values are possible for the direction:
|
||||||
|
|
||||||
@@ -124,7 +124,7 @@ OR-ed values are also possible. E.g. :cpp:expr:`LV_DIR_TOP | LV_DIR_LEFT`.
|
|||||||
Scroll chain
|
Scroll chain
|
||||||
------------
|
------------
|
||||||
|
|
||||||
If an object can't be scrolled further (e.g. its content has reached the
|
If a Widget can't be scrolled further (e.g. its content has reached the
|
||||||
bottom-most position) additional scrolling is propagated to its parent.
|
bottom-most position) additional scrolling is propagated to its parent.
|
||||||
If the parent can be scrolled in that direction than it will be scrolled
|
If the parent can be scrolled in that direction than it will be scrolled
|
||||||
instead. It continues propagating to the grandparent and
|
instead. It continues propagating to the grandparent and
|
||||||
@@ -132,14 +132,14 @@ grand-grandparents as well.
|
|||||||
|
|
||||||
The propagation on scrolling is called "scroll chaining" and it can be
|
The propagation on scrolling is called "scroll chaining" and it can be
|
||||||
enabled/disabled with ``LV_OBJ_FLAG_SCROLL_CHAIN_HOR/VER`` flag. If
|
enabled/disabled with ``LV_OBJ_FLAG_SCROLL_CHAIN_HOR/VER`` flag. If
|
||||||
chaining is disabled the propagation stops on the object and the
|
chaining is disabled the propagation stops on the Widget and the
|
||||||
parent(s) won't be scrolled.
|
parent(s) won't be scrolled.
|
||||||
|
|
||||||
Scroll momentum
|
Scroll momentum
|
||||||
---------------
|
---------------
|
||||||
|
|
||||||
When the user scrolls an object and releases it, LVGL can emulate
|
When the user scrolls a Widget and releases it, LVGL can emulate
|
||||||
inertial momentum for the scrolling. It's like the object was thrown and
|
inertial momentum for the scrolling. It's like the Widget was thrown and
|
||||||
scrolling slows down smoothly.
|
scrolling slows down smoothly.
|
||||||
|
|
||||||
The scroll momentum can be enabled/disabled with the
|
The scroll momentum can be enabled/disabled with the
|
||||||
@@ -148,36 +148,37 @@ The scroll momentum can be enabled/disabled with the
|
|||||||
Elastic scroll
|
Elastic scroll
|
||||||
--------------
|
--------------
|
||||||
|
|
||||||
Normally an object can't be scrolled past the extremities of its
|
Normally a Widget can't be scrolled past the extremities of its
|
||||||
content. That is the top side of the content can't be below the top side
|
content. That is the top side of the content can't be below the top side
|
||||||
of the object.
|
of the Widget.
|
||||||
|
|
||||||
However, with :cpp:enumerator:`LV_OBJ_FLAG_SCROLL_ELASTIC` a fancy effect is added
|
However, with :cpp:enumerator:`LV_OBJ_FLAG_SCROLL_ELASTIC` a fancy effect is added
|
||||||
when the user "over-scrolls" the content. The scrolling slows down, and
|
when the user "over-scrolls" the content. The scrolling slows down, and
|
||||||
the content can be scrolled inside the object. When the object is
|
the content can be scrolled inside the Widget. When the Widget is
|
||||||
released the content scrolled in it will be animated back to the valid
|
released the content scrolled in it will be animated back to the valid
|
||||||
position.
|
position.
|
||||||
|
|
||||||
Snapping
|
Snapping
|
||||||
--------
|
--------
|
||||||
|
|
||||||
The children of an object can be snapped according to specific rules
|
The children of a Widget can be snapped according to specific rules
|
||||||
when scrolling ends. Children can be made snappable individually with
|
when scrolling ends. Children can be made snappable individually with
|
||||||
the :cpp:enumerator:`LV_OBJ_FLAG_SNAPPABLE` flag.
|
the :cpp:enumerator:`LV_OBJ_FLAG_SNAPPABLE` flag.
|
||||||
|
|
||||||
An object can align snapped children in four ways:
|
A Widget can align snapped children in four ways:
|
||||||
|
|
||||||
- :cpp:enumerator:`LV_SCROLL_SNAP_NONE`: Snapping is disabled. (default)
|
- :cpp:enumerator:`LV_SCROLL_SNAP_NONE`: Snapping is disabled. (default)
|
||||||
- :cpp:enumerator:`LV_SCROLL_SNAP_START`: Align the children to the left/top side of a scrolled object
|
- :cpp:enumerator:`LV_SCROLL_SNAP_START`: Align the children to the left/top side of a scrolled Widget
|
||||||
- :cpp:enumerator:`LV_SCROLL_SNAP_END`: Align the children to the right/bottom side of a scrolled object
|
- :cpp:enumerator:`LV_SCROLL_SNAP_END`: Align the children to the right/bottom side of a scrolled Widget
|
||||||
- :cpp:enumerator:`LV_SCROLL_SNAP_CENTER`: Align the children to the center of a scrolled object
|
- :cpp:enumerator:`LV_SCROLL_SNAP_CENTER`: Align the children to the center of a scrolled Widget
|
||||||
|
|
||||||
Snap alignment is set with
|
Snap alignment is set with
|
||||||
``lv_obj_set_scroll_snap_x/y(obj, LV_SCROLL_SNAP_...)``:
|
:cpp:expr:`lv_obj_set_scroll_snap_x(widget, LV_SCROLL_SNAP_...)` and
|
||||||
|
:cpp:expr:`lv_obj_set_scroll_snap_y(widget, LV_SCROLL_SNAP_...)`.
|
||||||
|
|
||||||
Under the hood the following happens:
|
Under the hood the following happens:
|
||||||
|
|
||||||
1. User scrolls an object and releases the screen
|
1. User scrolls a Widget and releases the screen
|
||||||
2. LVGL calculates where the scroll would end considering scroll momentum
|
2. LVGL calculates where the scroll would end considering scroll momentum
|
||||||
3. LVGL finds the nearest scroll point
|
3. LVGL finds the nearest scroll point
|
||||||
4. LVGL scrolls to the snap point with an animation
|
4. LVGL scrolls to the snap point with an animation
|
||||||
@@ -195,24 +196,25 @@ This feature can be enabled by the :cpp:enumerator:`LV_OBJ_FLAG_SCROLL_ONE` flag
|
|||||||
Scroll on focus
|
Scroll on focus
|
||||||
---------------
|
---------------
|
||||||
|
|
||||||
Imagine that there a lot of objects in a group that are on a scrollable
|
Imagine that there a lot of Widgets in a group that are on a scrollable
|
||||||
object. Pressing the "Tab" button focuses the next object but it might
|
Widget. Pressing the "Tab" button focuses the next Widget but it might
|
||||||
be outside the visible area of the scrollable object. If the "scroll on
|
be outside the visible area of the scrollable Widget. If the "scroll on
|
||||||
focus" feature is enabled LVGL will automatically scroll objects to
|
focus" feature is enabled LVGL will automatically scroll Widgets to
|
||||||
bring their children into view. The scrolling happens recursively
|
bring their children into view. The scrolling happens recursively
|
||||||
therefore even nested scrollable objects are handled properly. The
|
therefore even nested scrollable Widgets are handled properly. The
|
||||||
object will be scrolled into view even if it's on a different page of a
|
Widget will be scrolled into view even if it's on a different page of a
|
||||||
tabview.
|
tabview.
|
||||||
|
|
||||||
|
|
||||||
Scroll manually
|
Scroll manually
|
||||||
***************
|
***************
|
||||||
|
|
||||||
The following API functions allow manual scrolling of objects:
|
The following API functions allow manual scrolling of Widgets:
|
||||||
|
|
||||||
- ``lv_obj_scroll_by(obj, x, y, LV_ANIM_ON/OFF)`` scroll by ``x`` and ``y`` values
|
- ``lv_obj_scroll_by(widget, x, y, LV_ANIM_ON/OFF)`` scroll by ``x`` and ``y`` values
|
||||||
- ``lv_obj_scroll_to(obj, x, y, LV_ANIM_ON/OFF)`` scroll to bring the given coordinate to the top left corner
|
- ``lv_obj_scroll_to(widget, x, y, LV_ANIM_ON/OFF)`` scroll to bring the given coordinate to the top left corner
|
||||||
- ``lv_obj_scroll_to_x(obj, x, LV_ANIM_ON/OFF)`` scroll to bring the given coordinate to the left side
|
- ``lv_obj_scroll_to_x(widget, x, LV_ANIM_ON/OFF)`` scroll to bring the given coordinate to the left side
|
||||||
- ``lv_obj_scroll_to_y(obj, y, LV_ANIM_ON/OFF)`` scroll to bring the given coordinate to the top side
|
- ``lv_obj_scroll_to_y(widget, y, LV_ANIM_ON/OFF)`` scroll to bring the given coordinate to the top side
|
||||||
|
|
||||||
From time to time you may need to retrieve the scroll position of an
|
From time to time you may need to retrieve the scroll position of an
|
||||||
element, either to restore it later, or to display dynamically some
|
element, either to restore it later, or to display dynamically some
|
||||||
@@ -235,32 +237,32 @@ to combine scroll event and store the scroll top position.
|
|||||||
Scroll coordinates can be retrieved from different axes with these
|
Scroll coordinates can be retrieved from different axes with these
|
||||||
functions:
|
functions:
|
||||||
|
|
||||||
- ``lv_obj_get_scroll_x(obj)`` Get the ``x`` coordinate of object
|
- ``lv_obj_get_scroll_x(widget)`` Get the ``x`` coordinate of Widget
|
||||||
- ``lv_obj_get_scroll_y(obj)`` Get the ``y`` coordinate of object
|
- ``lv_obj_get_scroll_y(widget)`` Get the ``y`` coordinate of Widget
|
||||||
- ``lv_obj_get_scroll_top(obj)`` Get the scroll coordinate from the top
|
- ``lv_obj_get_scroll_top(widget)`` Get the scroll coordinate from the top
|
||||||
- ``lv_obj_get_scroll_bottom(obj)`` Get the scroll coordinate from the bottom
|
- ``lv_obj_get_scroll_bottom(widget)`` Get the scroll coordinate from the bottom
|
||||||
- ``lv_obj_get_scroll_left(obj)`` Get the scroll coordinate from the left
|
- ``lv_obj_get_scroll_left(widget)`` Get the scroll coordinate from the left
|
||||||
- ``lv_obj_get_scroll_right(obj)`` Get the scroll coordinate from the right
|
- ``lv_obj_get_scroll_right(widget)`` Get the scroll coordinate from the right
|
||||||
|
|
||||||
|
|
||||||
Self size
|
Self size
|
||||||
*********
|
*********
|
||||||
|
|
||||||
Self size is a property of an object. Normally, the user shouldn't use
|
Self size is a property of a Widget. Normally, the user shouldn't use
|
||||||
this parameter but if a custom widget is created it might be useful.
|
this parameter but if a custom widget is created it might be useful.
|
||||||
|
|
||||||
In short, self size establishes the size of an object's content. To
|
In short, self size establishes the size of a Widget's content. To
|
||||||
understand it better take the example of a table. Let's say it has 10
|
understand it better take the example of a table. Let's say it has 10
|
||||||
rows each with 50 px height. So the total height of the content is 500
|
rows each with 50 px height. So the total height of the content is 500
|
||||||
px. In other words the "self height" is 500 px. If the user sets only
|
px. In other words the "self height" is 500 px. If the user sets only
|
||||||
200 px height for the table LVGL will see that the self size is larger
|
200 px height for the table LVGL will see that the self size is larger
|
||||||
and make the table scrollable.
|
and make the table scrollable.
|
||||||
|
|
||||||
This means not only the children can make an object scrollable but a
|
This means not only the children can make a Widget scrollable but a
|
||||||
larger self size will too.
|
larger self size will as well.
|
||||||
|
|
||||||
LVGL uses the :cpp:enumerator:`LV_EVENT_GET_SELF_SIZE` event to get the self size of
|
LVGL uses the :cpp:enumerator:`LV_EVENT_GET_SELF_SIZE` event to get the self size of
|
||||||
an object. Here is an example to see how to handle the event:
|
a Widget. Here is an example to see how to handle the event:
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
@@ -279,12 +281,14 @@ an object. Here is an example to see how to handle the event:
|
|||||||
|
|
||||||
.. _scroll_example:
|
.. _scroll_example:
|
||||||
|
|
||||||
|
|
||||||
Examples
|
Examples
|
||||||
********
|
********
|
||||||
|
|
||||||
.. include:: ../examples/scroll/index.rst
|
.. include:: ../../examples/scroll/index.rst
|
||||||
|
|
||||||
.. _scroll_api:
|
.. _scroll_api:
|
||||||
|
|
||||||
|
|
||||||
API
|
API
|
||||||
***
|
***
|
||||||
@@ -0,0 +1,11 @@
|
|||||||
|
.. _styles:
|
||||||
|
|
||||||
|
======
|
||||||
|
Styles
|
||||||
|
======
|
||||||
|
|
||||||
|
.. toctree::
|
||||||
|
:maxdepth: 2
|
||||||
|
|
||||||
|
style
|
||||||
|
style-properties
|
||||||
@@ -1,20 +1,20 @@
|
|||||||
.. _styles:
|
.. _style_details:
|
||||||
|
|
||||||
======
|
=============
|
||||||
Styles
|
Style Details
|
||||||
======
|
=============
|
||||||
|
|
||||||
*Styles* are used to set the appearance of objects. Styles in lvgl are
|
*Styles* are used to set the appearance of Widgets. Styles in lvgl are
|
||||||
heavily inspired by CSS. The concept in a nutshell is as follows: - A
|
heavily inspired by CSS. The concept in a nutshell is that a
|
||||||
style is an :cpp:type:`lv_style_t` variable which can hold properties like
|
style is an :cpp:type:`lv_style_t` variable which can hold properties like
|
||||||
border width, text color and so on. It's similar to a ``class`` in CSS.
|
border width, font, text color and so on. It's similar to a ``class`` in CSS.
|
||||||
|
|
||||||
- Styles can be assigned to objects to change their appearance. Upon
|
- Styles can be assigned to Widgets to change their appearance. Upon
|
||||||
assignment, the target part (*pseudo-element* in CSS) and target state
|
assignment, the target part (*pseudo-element* in CSS) and target state
|
||||||
(*pseudo class*) can be specified. For example one can add
|
(*pseudo class*) can be specified. For example one can add
|
||||||
``style_blue`` to the knob of a slider when it's in pressed state.
|
``style_blue`` to the knob of a slider when it's in pressed state.
|
||||||
- The same style can be used by any number of objects.
|
- The same style can be used by any number of Widgets.
|
||||||
- Styles can be cascaded which means multiple styles may be assigned to an object and
|
- Styles can be cascaded which means multiple styles may be assigned to a Widget and
|
||||||
each style can have different properties. Therefore, not all properties
|
each style can have different properties. Therefore, not all properties
|
||||||
have to be specified in a style. LVGL will search for a property until a
|
have to be specified in a style. LVGL will search for a property until a
|
||||||
style defines it or use a default if it's not specified by any of the
|
style defines it or use a default if it's not specified by any of the
|
||||||
@@ -22,19 +22,19 @@ border width, text color and so on. It's similar to a ``class`` in CSS.
|
|||||||
and ``style_btn_red`` can add only a ``background-color=red`` to
|
and ``style_btn_red`` can add only a ``background-color=red`` to
|
||||||
overwrite the background color.
|
overwrite the background color.
|
||||||
- The most recently added style has higher precedence. This means if a property
|
- The most recently added style has higher precedence. This means if a property
|
||||||
is specified in two styles the newest style in the object will be used.
|
is specified in two styles the newest style in the Widget will be used.
|
||||||
- Some properties (e.g. text color) can be inherited from a parent(s) if it's not specified in an object.
|
- Some properties (e.g. text color) can be inherited from a parent(s) if it's not specified in a Widget.
|
||||||
- Objects can also have local styles with higher precedence than "normal" styles.
|
- Widgets can also have local styles with higher precedence than "normal" styles.
|
||||||
- Unlike CSS (where pseudo-classes describe different states, e.g. ``:focus``),
|
- Unlike CSS (where pseudo-classes describe different states, e.g. ``:focus``),
|
||||||
in LVGL a property is assigned to a given state.
|
in LVGL a property is assigned to a given state.
|
||||||
- Transitions can be applied when the object changes state.
|
- Transitions can be applied when the Widget changes state.
|
||||||
|
|
||||||
.. _styles_states:
|
.. _styles_states:
|
||||||
|
|
||||||
States
|
States
|
||||||
******
|
******
|
||||||
|
|
||||||
The objects can be in the combination of the following states:
|
The Widgets can be in the combination of the following states:
|
||||||
|
|
||||||
- :cpp:enumerator:`LV_STATE_DEFAULT`: (0x0000) Normal, released state
|
- :cpp:enumerator:`LV_STATE_DEFAULT`: (0x0000) Normal, released state
|
||||||
- :cpp:enumerator:`LV_STATE_CHECKED`: (0x0001) Toggled or checked state
|
- :cpp:enumerator:`LV_STATE_CHECKED`: (0x0001) Toggled or checked state
|
||||||
@@ -50,7 +50,7 @@ The objects can be in the combination of the following states:
|
|||||||
- :cpp:enumerator:`LV_STATE_USER_3`: (0x4000) Custom state
|
- :cpp:enumerator:`LV_STATE_USER_3`: (0x4000) Custom state
|
||||||
- :cpp:enumerator:`LV_STATE_USER_4`: (0x8000) Custom state
|
- :cpp:enumerator:`LV_STATE_USER_4`: (0x8000) Custom state
|
||||||
|
|
||||||
An object can be in a combination of states such as being focused and
|
A Widget can be in a combination of states such as being focused and
|
||||||
pressed at the same time. This is represented as :cpp:expr:`LV_STATE_FOCUSED | LV_STATE_PRESSED`.
|
pressed at the same time. This is represented as :cpp:expr:`LV_STATE_FOCUSED | LV_STATE_PRESSED`.
|
||||||
|
|
||||||
A style can be added to any state or state combination. For example,
|
A style can be added to any state or state combination. For example,
|
||||||
@@ -70,35 +70,35 @@ defined like this:
|
|||||||
- :cpp:enumerator:`LV_STATE_PRESSED`: gray
|
- :cpp:enumerator:`LV_STATE_PRESSED`: gray
|
||||||
- :cpp:enumerator:`LV_STATE_FOCUSED`: red
|
- :cpp:enumerator:`LV_STATE_FOCUSED`: red
|
||||||
|
|
||||||
1. Initially the object is in the default state, so it's a simple case:
|
1. Initially the Widget is in the default state, so it's a simple case:
|
||||||
the property is perfectly defined in the object's current state as
|
the property is perfectly defined in the Widget's current state as
|
||||||
white.
|
white.
|
||||||
2. When the object is pressed there are 2 related properties: default
|
2. When the Widget is pressed there are 2 related properties: default
|
||||||
with white (default is related to every state) and pressed with gray.
|
with white (default is related to every state) and pressed with gray.
|
||||||
The pressed state has 0x0020 precedence which is higher than the
|
The pressed state has 0x0020 precedence which is higher than the
|
||||||
default state's 0x0000 precedence, so gray color will be used.
|
default state's 0x0000 precedence, so gray color will be used.
|
||||||
3. When the object is focused the same thing happens as in pressed state
|
3. When the Widget has focus the same thing happens as in pressed state
|
||||||
and red color will be used. (Focused state has higher precedence than
|
and red color will be used. (Focused state has higher precedence than
|
||||||
default state).
|
default state).
|
||||||
4. When the object is focused and pressed both gray and red would work,
|
4. When the Widget has focus and pressed both gray and red would work,
|
||||||
but the pressed state has higher precedence than focused so gray
|
but the pressed state has higher precedence than focused so gray
|
||||||
color will be used.
|
color will be used.
|
||||||
5. It's possible to set e.g. rose color for :cpp:expr:`LV_STATE_PRESSED | LV_STATE_FOCUSED`.
|
5. It's possible to set e.g. rose color for :cpp:expr:`LV_STATE_PRESSED | LV_STATE_FOCUSED`.
|
||||||
In this case, this combined state has 0x0020 + 0x0002 = 0x0022 precedence, which is higher than
|
In this case, this combined state has 0x0020 + 0x0002 = 0x0022 precedence, which is higher than
|
||||||
the pressed state's precedence so rose color would be used.
|
the pressed state's precedence so rose color would be used.
|
||||||
6. When the object is in the checked state there is no property to set
|
6. When the Widget is in the checked state there is no property to set
|
||||||
the background color for this state. So for lack of a better option,
|
the background color for this state. So for lack of a better option,
|
||||||
the object remains white from the default state's property.
|
the Widget remains white from the default state's property.
|
||||||
|
|
||||||
Some practical notes:
|
Some practical notes:
|
||||||
|
|
||||||
- The precedence (value) of states is quite intuitive, and it's something the
|
- The precedence (value) of states is quite intuitive, and it's something the
|
||||||
user would expect naturally. E.g. if an object is focused the user will still
|
user would expect naturally. E.g. if a Widget has focus the user will still
|
||||||
want to see if it's pressed, therefore the pressed state has a higher
|
want to see if it's pressed, therefore the pressed state has a higher
|
||||||
precedence. If the focused state had a higher precedence it would overwrite
|
precedence. If the focused state had a higher precedence it would overwrite
|
||||||
the pressed color.
|
the pressed color.
|
||||||
- If you want to set a property for all states (e.g. red background color)
|
- If you want to set a property for all states (e.g. red background color)
|
||||||
just set it for the default state. If the object can't find a property
|
just set it for the default state. If the Widget can't find a property
|
||||||
for its current state it will fall back to the default state's property.
|
for its current state it will fall back to the default state's property.
|
||||||
- Use ORed states to describe the properties for complex cases. (E.g.
|
- Use ORed states to describe the properties for complex cases. (E.g.
|
||||||
pressed + checked + focused)
|
pressed + checked + focused)
|
||||||
@@ -115,7 +115,7 @@ Cascading styles
|
|||||||
****************
|
****************
|
||||||
|
|
||||||
It's not required to set all the properties in one style. It's possible
|
It's not required to set all the properties in one style. It's possible
|
||||||
to add more styles to an object and have the latter added style modify
|
to add more styles to a Widget and have the latter added style modify
|
||||||
or extend appearance. For example, create a general gray button style
|
or extend appearance. For example, create a general gray button style
|
||||||
and create a new one for red buttons where only the new background color
|
and create a new one for red buttons where only the new background color
|
||||||
is set.
|
is set.
|
||||||
@@ -144,10 +144,10 @@ Inheritance
|
|||||||
***********
|
***********
|
||||||
|
|
||||||
Some properties (typically those related to text) can be inherited from
|
Some properties (typically those related to text) can be inherited from
|
||||||
the parent object's styles. Inheritance is applied only if the given
|
the parent Widget's styles. Inheritance is applied only if the given
|
||||||
property is not set in the object's styles (even in default state). In
|
property is not set in the Widget's styles (even in default state). In
|
||||||
this case, if the property is inheritable, the property's value will be
|
this case, if the property is inheritable, the property's value will be
|
||||||
searched in the parents until an object specifies a value for the
|
searched in the parents until a Widget specifies a value for the
|
||||||
property. The parents will use their own state to determine the value.
|
property. The parents will use their own state to determine the value.
|
||||||
So if a button is pressed, and the text color comes from here, the
|
So if a button is pressed, and the text color comes from here, the
|
||||||
pressed text color will be used.
|
pressed text color will be used.
|
||||||
@@ -157,7 +157,7 @@ pressed text color will be used.
|
|||||||
Parts
|
Parts
|
||||||
*****
|
*****
|
||||||
|
|
||||||
Objects can be composed of *parts* which may each have their own styles.
|
Widgets can be composed of *parts* which may each have their own styles.
|
||||||
|
|
||||||
The following predefined parts exist in LVGL:
|
The following predefined parts exist in LVGL:
|
||||||
|
|
||||||
@@ -177,7 +177,7 @@ For example a :ref:`Slider <lv_slider>` has three parts:
|
|||||||
- Knob
|
- Knob
|
||||||
|
|
||||||
This means all three parts of the slider can have their own styles. See
|
This means all three parts of the slider can have their own styles. See
|
||||||
later how to add styles to objects and parts.
|
later how to add styles to Widgets and parts.
|
||||||
|
|
||||||
.. _styles_initialize:
|
.. _styles_initialize:
|
||||||
|
|
||||||
@@ -220,7 +220,7 @@ To get a property's value from a style:
|
|||||||
|
|
||||||
lv_style_value_t v;
|
lv_style_value_t v;
|
||||||
lv_result_t res = lv_style_get_prop(&style, LV_STYLE_BG_COLOR, &v);
|
lv_result_t res = lv_style_get_prop(&style, LV_STYLE_BG_COLOR, &v);
|
||||||
if(res == LV_RESULT_OK) { /*Found*/
|
if(res == LV_RESULT_OK) { /* Found */
|
||||||
do_something(v.color);
|
do_something(v.color);
|
||||||
}
|
}
|
||||||
|
|
||||||
@@ -236,7 +236,7 @@ To reset a style (free all its data) use:
|
|||||||
|
|
||||||
lv_style_reset(&style);
|
lv_style_reset(&style);
|
||||||
|
|
||||||
Styles can be built as ``const`` too to save RAM:
|
Styles can be built as ``const`` as well to save RAM:
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
@@ -256,35 +256,35 @@ new properties cannot be added.
|
|||||||
Add and remove styles to a widget
|
Add and remove styles to a widget
|
||||||
*********************************
|
*********************************
|
||||||
|
|
||||||
A style on its own is not that useful. It must be assigned to an object
|
A style on its own is not that useful. It must be assigned to a Widget
|
||||||
to take effect.
|
to take effect.
|
||||||
|
|
||||||
Add styles
|
Add styles
|
||||||
----------
|
----------
|
||||||
|
|
||||||
To add a style to an object use
|
To add a style to a Widget use
|
||||||
``lv_obj_add_style(obj, &style, <selector>)``. ``<selector>`` is an
|
``lv_obj_add_style(widget, &style, <selector>)``. ``<selector>`` is an
|
||||||
OR-ed value of parts and state to which the style should be added. Some
|
OR-ed value of parts and state to which the style should be added. Some
|
||||||
examples:
|
examples:
|
||||||
|
|
||||||
- :cpp:expr:`LV_PART_MAIN | LV_STATE_DEFAULT`
|
- :cpp:expr:`LV_PART_MAIN | LV_STATE_DEFAULT`
|
||||||
- :cpp:enumerator:`LV_STATE_PRESSED`: The main part in pressed state. :cpp:enumerator:`LV_PART_MAIN` can be omitted
|
- :cpp:enumerator:`LV_STATE_PRESSED`: The main part in pressed state. :cpp:enumerator:`LV_PART_MAIN` can be omitted
|
||||||
- :cpp:enumerator:`LV_PART_SCROLLBAR`: The scrollbar part in the default state. :cpp:enumerator:`LV_STATE_DEFAULT` can be omitted.
|
- :cpp:enumerator:`LV_PART_SCROLLBAR`: The scrollbar part in the default state. :cpp:enumerator:`LV_STATE_DEFAULT` can be omitted.
|
||||||
- :cpp:expr:`LV_PART_SCROLLBAR | LV_STATE_SCROLLED`: The scrollbar part when the object is being scrolled
|
- :cpp:expr:`LV_PART_SCROLLBAR | LV_STATE_SCROLLED`: The scrollbar part when the Widget is being scrolled
|
||||||
- :cpp:expr:`LV_PART_INDICATOR | LV_STATE_PRESSED | LV_STATE_CHECKED` The indicator part when the object is pressed and checked at the same time.
|
- :cpp:expr:`LV_PART_INDICATOR | LV_STATE_PRESSED | LV_STATE_CHECKED` The indicator part when the Widget is pressed and checked at the same time.
|
||||||
|
|
||||||
Using :cpp:func:`lv_obj_add_style`:
|
Using :cpp:func:`lv_obj_add_style`:
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
lv_obj_add_style(btn, &style_btn, 0); /*Default button style*/
|
lv_obj_add_style(btn, &style_btn, 0); /* Default button style */
|
||||||
lv_obj_add_style(btn, &btn_red, LV_STATE_PRESSED); /*Overwrite only some colors to red when pressed*/
|
lv_obj_add_style(btn, &btn_red, LV_STATE_PRESSED); /* Overwrite only some colors to red when pressed */
|
||||||
|
|
||||||
Replace styles
|
Replace styles
|
||||||
--------------
|
--------------
|
||||||
|
|
||||||
To replace a specific style of an object use
|
To replace a specific style of a Widget use
|
||||||
:cpp:expr:`lv_obj_replace_style(obj, old_style, new_style, selector)`. This
|
:cpp:expr:`lv_obj_replace_style(widget, old_style, new_style, selector)`. This
|
||||||
function will only replace ``old_style`` with ``new_style`` if the
|
function will only replace ``old_style`` with ``new_style`` if the
|
||||||
``selector`` matches the ``selector`` used in ``lv_obj_add_style``. Both
|
``selector`` matches the ``selector`` used in ``lv_obj_add_style``. Both
|
||||||
styles, i.e. ``old_style`` and ``new_style``, must not be ``NULL`` (for
|
styles, i.e. ``old_style`` and ``new_style``, must not be ``NULL`` (for
|
||||||
@@ -298,16 +298,16 @@ Using :cpp:func:`lv_obj_replace_style`:
|
|||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
lv_obj_add_style(btn, &style_btn, 0); /*Add a button style*/
|
lv_obj_add_style(btn, &style_btn, 0); /* Add a button style */
|
||||||
lv_obj_replace_style(btn, &style_btn, &new_style_btn, 0); /*Replace the button style with a different one*/
|
lv_obj_replace_style(btn, &style_btn, &new_style_btn, 0); /* Replace the button style with a different one */
|
||||||
|
|
||||||
Remove styles
|
Remove styles
|
||||||
-------------
|
-------------
|
||||||
|
|
||||||
To remove all styles from an object use :cpp:expr:`lv_obj_remove_style_all(obj)`.
|
To remove all styles from a Widget use :cpp:expr:`lv_obj_remove_style_all(widget)`.
|
||||||
|
|
||||||
To remove specific styles use
|
To remove specific styles use
|
||||||
:cpp:expr:`lv_obj_remove_style(obj, style, selector)`. This function will remove
|
:cpp:expr:`lv_obj_remove_style(widget, style, selector)`. This function will remove
|
||||||
``style`` only if the ``selector`` matches with the ``selector`` used in
|
``style`` only if the ``selector`` matches with the ``selector`` used in
|
||||||
:cpp:func:`lv_obj_add_style`. ``style`` can be ``NULL`` to check only the
|
:cpp:func:`lv_obj_add_style`. ``style`` can be ``NULL`` to check only the
|
||||||
``selector`` and remove all matching styles. The ``selector`` can use
|
``selector`` and remove all matching styles. The ``selector`` can use
|
||||||
@@ -317,65 +317,66 @@ any state or part.
|
|||||||
Report style changes
|
Report style changes
|
||||||
--------------------
|
--------------------
|
||||||
|
|
||||||
If a style which is already assigned to an object changes (i.e. a
|
If a style which is already assigned to a Widget changes (i.e. a
|
||||||
property is added or changed), the objects using that style should be
|
property is added or changed), the Widgets using that style should be
|
||||||
notified. There are 3 options to do this:
|
notified. There are 3 options to do this:
|
||||||
|
|
||||||
1. If you know that the changed properties can be applied by a simple redraw
|
1. If you know that the changed properties can be applied by a simple redraw
|
||||||
(e.g. color or opacity changes) just call :cpp:expr:`lv_obj_invalidate(obj)`
|
(e.g. color or opacity changes) just call :cpp:expr:`lv_obj_invalidate(widget)`
|
||||||
or :cpp:expr:`lv_obj_invalidate(lv_screen_active())`.
|
or :cpp:expr:`lv_obj_invalidate(lv_screen_active())`.
|
||||||
2. If more complex style properties were changed or added, and you know which
|
2. If more complex style properties were changed or added, and you know which
|
||||||
object(s) are affected by that style call :cpp:expr:`lv_obj_refresh_style(obj, part, property)`.
|
Widget(s) are affected by that style call :cpp:expr:`lv_obj_refresh_style(widget, part, property)`.
|
||||||
To refresh all parts and properties use :cpp:expr:`lv_obj_refresh_style(obj, LV_PART_ANY, LV_STYLE_PROP_ANY)`.
|
To refresh all parts and properties use :cpp:expr:`lv_obj_refresh_style(widget, LV_PART_ANY, LV_STYLE_PROP_ANY)`.
|
||||||
3. To make LVGL check all objects to see if they use a style and refresh them
|
3. To make LVGL check all Widgets to see if they use a style and refresh them
|
||||||
when needed, call :cpp:expr:`lv_obj_report_style_change(&style)`. If ``style``
|
when needed, call :cpp:expr:`lv_obj_report_style_change(&style)`. If ``style``
|
||||||
is ``NULL`` all objects will be notified about a style change.
|
is ``NULL`` all Widgets will be notified about a style change.
|
||||||
|
|
||||||
Get a property's value on an object
|
Get a property's value on a Widget
|
||||||
-----------------------------------
|
-----------------------------------
|
||||||
|
|
||||||
To get a final value of property
|
To get a final value of property
|
||||||
|
|
||||||
- considering cascading, inheritance, local styles and transitions (see below)
|
- considering cascading, inheritance, local styles and transitions (see below)
|
||||||
- property get functions like this can be used: ``lv_obj_get_style_<property_name>(obj, <part>)``.
|
- property get functions like this can be used: ``lv_obj_get_style_<property_name>(widget, <part>)``.
|
||||||
These functions use the object's current state and if no better candidate exists they return a default value.
|
These functions use the Widget's current state and if no better candidate exists they return a default value.
|
||||||
For example:
|
For example:
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
lv_color_t color = lv_obj_get_style_bg_color(btn, LV_PART_MAIN);
|
lv_color_t color = lv_obj_get_style_bg_color(btn, LV_PART_MAIN);
|
||||||
|
|
||||||
.. _styles_local:
|
.. _styles_local:
|
||||||
|
|
||||||
Local styles
|
Local styles
|
||||||
************
|
************
|
||||||
|
|
||||||
In addition to "normal" styles, objects can also store local styles.
|
In addition to "normal" styles, Widgets can also store local styles.
|
||||||
This concept is similar to inline styles in CSS
|
This concept is similar to inline styles in CSS
|
||||||
(e.g. ``<div style="color:red">``) with some modification.
|
(e.g. ``<div style="color:red">``) with some modification.
|
||||||
|
|
||||||
Local styles are like normal styles, but they can't be shared among
|
Local styles are like normal styles, but they can't be shared among
|
||||||
other objects. If used, local styles are allocated automatically, and
|
other Widgets. If used, local styles are allocated automatically, and
|
||||||
freed when the object is deleted. They are useful to add local
|
freed when the Widget is deleted. They are useful to add local
|
||||||
customization to an object.
|
customization to a Widget.
|
||||||
|
|
||||||
Unlike in CSS, LVGL local styles can be assigned to states
|
Unlike in CSS, LVGL local styles can be assigned to states
|
||||||
(*pseudo-classes*) and parts (*pseudo-elements*).
|
(*pseudo-classes*) and parts (*pseudo-elements*).
|
||||||
|
|
||||||
To set a local property use functions like
|
To set a local property use functions like
|
||||||
``lv_obj_set_style_<property_name>(obj, <value>, <selector>);`` For example:
|
``lv_obj_set_style_<property_name>(widget, <value>, <selector>);`` For example:
|
||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
lv_obj_set_style_bg_color(slider, lv_color_red(), LV_PART_INDICATOR | LV_STATE_FOCUSED);
|
lv_obj_set_style_bg_color(slider, lv_color_red(), LV_PART_INDICATOR | LV_STATE_FOCUSED);
|
||||||
|
|
||||||
.. _styles_properties:
|
|
||||||
|
|
||||||
Properties
|
.. _style_properties_overview:
|
||||||
**********
|
|
||||||
|
Style Properties Overview
|
||||||
|
*************************
|
||||||
|
|
||||||
|
For the full list of style properties click :ref:`here <style_properties>`.
|
||||||
|
|
||||||
For the full list of style properties click
|
|
||||||
:ref:`here <style_properties>`.
|
|
||||||
|
|
||||||
Typical background properties
|
Typical background properties
|
||||||
-----------------------------
|
-----------------------------
|
||||||
@@ -397,7 +398,7 @@ background properties" are the ones related to:
|
|||||||
Transitions
|
Transitions
|
||||||
***********
|
***********
|
||||||
|
|
||||||
By default, when an object changes state (e.g. it's pressed) the new
|
By default, when a Widget changes state (e.g. it's pressed) the new
|
||||||
properties from the new state are set immediately. However, with
|
properties from the new state are set immediately. However, with
|
||||||
transitions it's possible to play an animation on state change. For
|
transitions it's possible to play an animation on state change. For
|
||||||
example, on pressing a button its background color can be animated to
|
example, on pressing a button its background color can be animated to
|
||||||
@@ -413,7 +414,7 @@ possible to set
|
|||||||
|
|
||||||
The transition properties can be defined for each state. For example,
|
The transition properties can be defined for each state. For example,
|
||||||
setting a 500 ms transition time in the default state means that when
|
setting a 500 ms transition time in the default state means that when
|
||||||
the object goes to the default state a 500 ms transition time is
|
the Widget goes to the default state a 500 ms transition time is
|
||||||
applied. Setting a 100 ms transition time in the pressed state causes a
|
applied. Setting a 100 ms transition time in the pressed state causes a
|
||||||
100 ms transition when going to the pressed state. This example
|
100 ms transition when going to the pressed state. This example
|
||||||
configuration results in going to the pressed state quickly and then
|
configuration results in going to the pressed state quickly and then
|
||||||
@@ -424,10 +425,10 @@ initialized and added to a style:
|
|||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
/*Only its pointer is saved so must static, global or dynamically allocated */
|
/* Only its pointer is saved so must static, global or dynamically allocated */
|
||||||
static const lv_style_prop_t trans_props[] = {
|
static const lv_style_prop_t trans_props[] = {
|
||||||
LV_STYLE_BG_OPA, LV_STYLE_BG_COLOR,
|
LV_STYLE_BG_OPA, LV_STYLE_BG_COLOR,
|
||||||
0, /*End marker*/
|
0, /* End marker */
|
||||||
};
|
};
|
||||||
|
|
||||||
static lv_style_transition_dsc_t trans1;
|
static lv_style_transition_dsc_t trans1;
|
||||||
@@ -500,12 +501,12 @@ example shows how to set the "default" theme:
|
|||||||
|
|
||||||
.. code-block:: c
|
.. code-block:: c
|
||||||
|
|
||||||
lv_theme_t * th = lv_theme_default_init(display, /*Use the DPI, size, etc from this display*/
|
lv_theme_t * th = lv_theme_default_init(display, /* Use the DPI, size, etc from this display */
|
||||||
LV_COLOR_PALETTE_BLUE, LV_COLOR_PALETTE_CYAN, /*Primary and secondary palette*/
|
LV_COLOR_PALETTE_BLUE, LV_COLOR_PALETTE_CYAN, /* Primary and secondary palette */
|
||||||
false, /*Light or dark mode*/
|
false, /* Light or dark mode */
|
||||||
&lv_font_montserrat_10, &lv_font_montserrat_14, &lv_font_montserrat_18); /*Small, normal, large fonts*/
|
&lv_font_montserrat_10, &lv_font_montserrat_14, &lv_font_montserrat_18); /* Small, normal, large fonts */
|
||||||
|
|
||||||
lv_display_set_theme(display, th); /*Assign the theme to the display*/
|
lv_display_set_theme(display, th); /* Assign the theme to the display */
|
||||||
|
|
||||||
The included themes are enabled in ``lv_conf.h``. If the default theme
|
The included themes are enabled in ``lv_conf.h``. If the default theme
|
||||||
is enabled by :c:macro:`LV_USE_THEME_DEFAULT` LVGL automatically initializes
|
is enabled by :c:macro:`LV_USE_THEME_DEFAULT` LVGL automatically initializes
|
||||||
@@ -529,7 +530,7 @@ There is an example for it below.
|
|||||||
Examples
|
Examples
|
||||||
********
|
********
|
||||||
|
|
||||||
.. include:: ../examples/styles/index.rst
|
.. include:: ../../../examples/styles/index.rst
|
||||||
|
|
||||||
.. _styles_api:
|
.. _styles_api:
|
||||||
|
|
||||||
@@ -1,8 +1,8 @@
|
|||||||
.. _debugging:
|
.. _debugging:
|
||||||
|
|
||||||
==============
|
=========
|
||||||
Debugging LVGL
|
Debugging
|
||||||
==============
|
=========
|
||||||
|
|
||||||
.. toctree::
|
.. toctree::
|
||||||
:maxdepth: 2
|
:maxdepth: 2
|
||||||
@@ -20,9 +20,9 @@ To enable logging, set :c:macro:`LV_USE_LOG` in ``lv_conf.h`` and set
|
|||||||
- :c:macro:`LV_LOG_LEVEL_USER`: Only user messages
|
- :c:macro:`LV_LOG_LEVEL_USER`: Only user messages
|
||||||
- :c:macro:`LV_LOG_LEVEL_NONE`: Do not log anything
|
- :c:macro:`LV_LOG_LEVEL_NONE`: Do not log anything
|
||||||
|
|
||||||
The events which have a higher level than the set log level will be
|
The events which have a higher level than the set log level will be logged
|
||||||
logged too. E.g. if you :c:macro:`LV_LOG_LEVEL_WARN`, errors will be also
|
as well. E.g. if you :c:macro:`LV_LOG_LEVEL_WARN`, errors will be also logged.
|
||||||
logged.
|
|
||||||
|
|
||||||
Printing logs
|
Printing logs
|
||||||
*************
|
*************
|
||||||
@@ -18,7 +18,7 @@ and simulate the same rendering images as the real hardware on the simulator.
|
|||||||
Configuration
|
Configuration
|
||||||
*************
|
*************
|
||||||
|
|
||||||
1. Enable VG-Lite rendering backend, see `VG-Lite Rendering Backend <overview/renderers/vg_lite>`__.
|
1. Enable VG-Lite rendering backend, see :ref:`vglite`.
|
||||||
|
|
||||||
2. Enable ThorVG and turn on the configuration :c:macro:`LV_USE_THORVG_INTERNAL` or :c:macro:`LV_USE_THORVG_EXTERNAL`.
|
2. Enable ThorVG and turn on the configuration :c:macro:`LV_USE_THORVG_INTERNAL` or :c:macro:`LV_USE_THORVG_EXTERNAL`.
|
||||||
It is recommended to use the internal ThorVG library to ensure uniform rendering results.
|
It is recommended to use the internal ThorVG library to ensure uniform rendering results.
|
||||||
@@ -0,0 +1,17 @@
|
|||||||
|
.. _reference:
|
||||||
|
|
||||||
|
=========
|
||||||
|
Reference
|
||||||
|
=========
|
||||||
|
|
||||||
|
.. toctree::
|
||||||
|
:maxdepth: 2
|
||||||
|
|
||||||
|
base-widget/index
|
||||||
|
widgets/index
|
||||||
|
main-components/index
|
||||||
|
other-components/index
|
||||||
|
../examples
|
||||||
|
debugging/index
|
||||||
|
integration/index
|
||||||
|
libs/index
|
||||||
@@ -105,7 +105,7 @@ The different "json_types" are as follows:
|
|||||||
- ``"name"``: The name of the function pointer.
|
- ``"name"``: The name of the function pointer.
|
||||||
- ``"type"``: This contains the return type information for the function pointer.
|
- ``"type"``: This contains the return type information for the function pointer.
|
||||||
- ``"docstring"``: you should know what this is.
|
- ``"docstring"``: you should know what this is.
|
||||||
- ``"args"``: array of ``"arg"`` objects. This describes the fuction arguments/parameters.
|
- ``"args"``: array of ``"arg"`` Widgets. This describes the fuction arguments/parameters.
|
||||||
- ``"quals"``: array of qualifiers, IE "const"
|
- ``"quals"``: array of qualifiers, IE "const"
|
||||||
|
|
||||||
|
|
||||||
@@ -144,7 +144,7 @@ The different "json_types" are as follows:
|
|||||||
type as the type for the members of this enumeration group. Check the
|
type as the type for the members of this enumeration group. Check the
|
||||||
enumeration members type to get the correct type.
|
enumeration members type to get the correct type.
|
||||||
- ``"docstring"``: you should know what this is.
|
- ``"docstring"``: you should know what this is.
|
||||||
- ``"members"``: array of ``"enum_member"`` objects
|
- ``"members"``: array of ``"enum_member"`` Widgets
|
||||||
|
|
||||||
|
|
||||||
- ``"enum_member"``: Describes an enumeration item/member. Only found under
|
- ``"enum_member"``: Describes an enumeration item/member. Only found under
|
||||||
@@ -59,7 +59,7 @@ MicroPython + LVGL could be used for:
|
|||||||
|
|
||||||
- Fast prototyping GUI.
|
- Fast prototyping GUI.
|
||||||
- Shortening the cycle of changing and fine-tuning the GUI.
|
- Shortening the cycle of changing and fine-tuning the GUI.
|
||||||
- Modelling the GUI in a more abstract way by defining reusable composite objects, taking advantage of Python's language features
|
- Modelling the GUI in a more abstract way by defining reusable composite Widgets, taking advantage of Python's language features
|
||||||
such as Inheritance, Closures, List Comprehension, Generators, Exception Handling, Arbitrary Precision Integers and others.
|
such as Inheritance, Closures, List Comprehension, Generators, Exception Handling, Arbitrary Precision Integers and others.
|
||||||
- Make LVGL accessible to a larger audience. No need to know C to create a nice GUI on an embedded system. This goes well with
|
- Make LVGL accessible to a larger audience. No need to know C to create a nice GUI on an embedded system. This goes well with
|
||||||
`CircuitPython vision <https://learn.adafruit.com/welcome-to-circuitpython/what-is-circuitpython>`__.
|
`CircuitPython vision <https://learn.adafruit.com/welcome-to-circuitpython/what-is-circuitpython>`__.
|
||||||
@@ -110,7 +110,7 @@ edit a python script and run it.
|
|||||||
|
|
||||||
`Click here to experiment on the online simulator <https://sim.lvgl.io/>`__
|
`Click here to experiment on the online simulator <https://sim.lvgl.io/>`__
|
||||||
|
|
||||||
Many `LVGL examples <https://docs.lvgl.io/master/examples.html>`__ are available also for MicroPython. Just click the link!
|
Many :ref:`LVGL examples <examples>` are available also for MicroPython. Just click the link!
|
||||||
|
|
||||||
|
|
||||||
PC Simulator
|
PC Simulator
|
||||||
@@ -1,7 +1,7 @@
|
|||||||
.. _build_cmake:
|
.. _build_cmake:
|
||||||
|
|
||||||
=====
|
=====
|
||||||
cmake
|
CMake
|
||||||
=====
|
=====
|
||||||
|
|
||||||
|
|
||||||
@@ -176,8 +176,8 @@ The process is described in details below, using ``SPIFFS`` as demonstration.
|
|||||||
}
|
}
|
||||||
|
|
||||||
lv_obj_t * obj = lv_image_create(lv_screen_active());
|
lv_obj_t * obj = lv_image_create(lv_screen_active());
|
||||||
lv_image_set_src(obj, "A:/spiffs/logo.bin");
|
lv_image_set_src(widget, "A:/spiffs/logo.bin");
|
||||||
lv_obj_center(obj);
|
lv_obj_center(widget);
|
||||||
}
|
}
|
||||||
|
|
||||||
- **Build and flash**
|
- **Build and flash**
|
||||||
@@ -5,7 +5,7 @@ NXP
|
|||||||
NXP has integrated LVGL into the MCUXpresso SDK packages for several of our
|
NXP has integrated LVGL into the MCUXpresso SDK packages for several of our
|
||||||
microcontrollers as an optional software component, allowing easy evaluation and
|
microcontrollers as an optional software component, allowing easy evaluation and
|
||||||
migration into your product design. LVGL is a free and open-source embedded
|
migration into your product design. LVGL is a free and open-source embedded
|
||||||
graphic library with features that enable you need to create embedded GUIs with
|
graphic library with features that enable you to create embedded GUIs with
|
||||||
intuitive graphical elements, beautiful visual effects and a low memory
|
intuitive graphical elements, beautiful visual effects and a low memory
|
||||||
footprint. The complete graphic framework includes a variety of widgets for you
|
footprint. The complete graphic framework includes a variety of widgets for you
|
||||||
to use in the creation of your GUI, and supports more advanced functions such as
|
to use in the creation of your GUI, and supports more advanced functions such as
|
||||||