mirror of
https://github.com/lvgl/lvgl.git
synced 2026-05-23 15:56:59 +08:00
feat(drivers): add Windows backend for LVGL v9 (#5313)
This commit is contained in:
Kenji Mouri (Qi Lu)
committed by
GitHub
GitHub
parent
b4cf95e7fa
commit
cab1336d8e
@@ -1489,6 +1489,10 @@ menu "LVGL configuration"
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config LV_USE_ILI9341
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bool "Use ILI9341 LCD driver"
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default n
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config LV_USE_WINDOWS
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bool "Use LVGL Windows backend"
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default n
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endmenu
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menu "Examples"
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@@ -8,3 +8,4 @@ Drivers
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display/index
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touchpad/index
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X11
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windows
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@@ -0,0 +1,105 @@
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=============================
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Windows Display/Inputs driver
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=============================
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Overview
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-------------
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The **Windows** display/input `driver <https://github.com/lvgl/lvgl/src/dev/windows>`__ offers support for simulating the LVGL display and keyboard/mouse inputs in a Windows Win32 window.
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The main purpose for this driver is for testing/debugging the LVGL application in a **Windows** simulation window via **simulator mode**, or developing a standard **Windows** desktop application with LVGL via **application mode**.
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Here are the **similarity** for simulator mode and application mode.
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- Support LVGL pointer, keypad and encoder devices integration.
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- Support Windows touch input.
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- Support Windows input method integration input.
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- Support Per-monitor DPI Aware (both V1 and V2).
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Here are the **differences** for simulator mode and application mode.
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Simulator Mode
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^^^^^^^^^^^^^^
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- Designed for LVGL simulation scenario.
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- Keep the LVGL display resolution all time for trying best to simulate UI layout which will see in their production devices.
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- When Windows DPI scaling setting is changed, Windows backend will stretch the display content.
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Application Mode
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^^^^^^^^^^^^^^^^
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- Designed for Windows desktop application development scenario.
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- Have the Window resizing support and LVGL display resolution will be changed.
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- When Windows DPI scaling setting is changed, the LVGL display DPI value will also be changed.
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Prerequisites
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-------------
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The minimum Windows OS version this driver supported is Windows Server 2003, or Windows XP with East Asian language support installed because the input method integration support need that.
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Configure Windows driver
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--------------------
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Enable the Windows driver support in lv_conf.h, by cmake compiler define or by KConfig
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.. code:: c
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#define LV_USE_WINDOWS 1
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Usage
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-----
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.. code:: c
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#include <Windows.h>
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#include "lvgl/lvgl.h"
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#include "lvgl/examples/lv_examples.h"
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#include "lvgl/demos/lv_demos.h"
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int main()
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{
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lv_init();
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int32_t zoom_level = 100;
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bool allow_dpi_override = false;
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bool simulator_mode = false;
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lv_display_t* display = lv_windows_create_display(
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L"LVGL Display Window",
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800,
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480,
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zoom_level,
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allow_dpi_override,
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simulator_mode);
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if (!display)
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{
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return -1;
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}
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lv_indev_t* pointer_device = lv_windows_acquire_pointer_indev(display);
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if (!pointer_device)
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{
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return -1;
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}
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lv_indev_t* keypad_device = lv_windows_acquire_keypad_indev(display);
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if (!keypad_device)
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{
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return -1;
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}
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lv_indev_t* encoder_device = lv_windows_acquire_encoder_indev(display);
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if (!encoder_device)
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{
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return -1;
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}
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lv_demo_widgets();
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while (1)
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{
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uint32_t time_till_next = lv_timer_handler();
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Sleep(time_till_next);
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}
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return 0;
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}
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@@ -893,6 +893,8 @@
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#define LV_USE_GENERIC_MIPI (LV_USE_ST7735 | LV_USE_ST7789 | LV_USE_ST7796 | LV_USE_ILI9341)
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/* LVGL Windows backend */
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#define LV_USE_WINDOWS 0
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/*==================
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* EXAMPLES
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@@ -133,6 +133,9 @@ extern "C" {
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#include "src/dev/evdev/lv_evdev.h"
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#include "src/dev/windows/lv_windows_input.h"
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#include "src/dev/windows/lv_windows_display.h"
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#include "src/core/lv_global.h"
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/*********************
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* DEFINES
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,123 @@
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/**
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* @file lv_windows_context.h
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*
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*/
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#ifndef LV_WINDOWS_CONTEXT_H
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#define LV_WINDOWS_CONTEXT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include "../../display/lv_display.h"
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#include "../../indev/lv_indev.h"
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#if LV_USE_WINDOWS
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#include <windows.h>
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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typedef struct _lv_windows_pointer_context_t {
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lv_indev_state_t state;
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lv_point_t point;
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lv_indev_t * indev;
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} lv_windows_pointer_context_t;
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typedef struct _lv_windows_keypad_queue_item_t {
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uint32_t key;
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lv_indev_state_t state;
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} lv_windows_keypad_queue_item_t;
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typedef struct _lv_windows_keypad_context_t {
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CRITICAL_SECTION mutex;
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lv_ll_t queue;
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uint16_t utf16_high_surrogate;
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uint16_t utf16_low_surrogate;
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lv_indev_t * indev;
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} lv_windows_keypad_context_t;
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typedef struct _lv_windows_encoder_context_t {
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lv_indev_state_t state;
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int16_t enc_diff;
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lv_indev_t * indev;
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} lv_windows_encoder_context_t;
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typedef struct _lv_windows_window_context_t {
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lv_display_t * display_device_object;
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lv_timer_t * display_timer_object;
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int32_t window_dpi;
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int32_t zoom_level;
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bool allow_dpi_override;
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bool simulator_mode;
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bool display_resolution_changed;
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lv_point_t requested_display_resolution;
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HDC display_framebuffer_context_handle;
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uint32_t * display_framebuffer_base;
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size_t display_framebuffer_size;
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lv_windows_pointer_context_t pointer;
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lv_windows_keypad_context_t keypad;
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lv_windows_encoder_context_t encoder;
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} lv_windows_window_context_t;
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typedef struct _lv_windows_create_display_data_t {
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const wchar_t * title;
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int32_t hor_res;
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int32_t ver_res;
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int32_t zoom_level;
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bool allow_dpi_override;
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bool simulator_mode;
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HANDLE mutex;
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lv_display_t * display;
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} lv_windows_create_display_data_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* @brief Initialize the LVGL Windows backend.
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* @remark This is a private API which is used for LVGL Windows backend
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* implementation. LVGL users shouldn't use that because the
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* LVGL has already used it in lv_init.
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*/
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void lv_windows_platform_init(void);
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/**
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* @brief Get the window context from specific LVGL display window.
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* @param window_handle The window handle of specific LVGL display window.
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* @return The window context from specific LVGL display window.
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* @remark This is a private API which is used for LVGL Windows backend
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* implementation. LVGL users shouldn't use that because the
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* maintainer doesn't promise the application binary interface
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* compatibility for this API.
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*/
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lv_windows_window_context_t * lv_windows_get_window_context(
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HWND window_handle);
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/**********************
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* MACROS
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**********************/
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#endif // LV_USE_WINDOWS
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#ifdef __cplusplus
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} /*extern "C"*/
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#endif
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#endif /*LV_WINDOWS_CONTEXT_H*/
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@@ -0,0 +1,170 @@
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/**
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* @file lv_windows_display.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "lv_windows_display.h"
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#if LV_USE_WINDOWS
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#include "lv_windows_context.h"
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#include <process.h>
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static unsigned int __stdcall lv_windows_display_thread_entrypoint(
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void * parameter);
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/**********************
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* STATIC VARIABLES
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**********************/
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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lv_display_t * lv_windows_create_display(
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const wchar_t * title,
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int32_t hor_res,
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int32_t ver_res,
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int32_t zoom_level,
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bool allow_dpi_override,
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bool simulator_mode)
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{
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lv_windows_create_display_data_t data;
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lv_memzero(&data, sizeof(lv_windows_create_display_data_t));
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data.title = title;
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data.hor_res = hor_res;
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data.ver_res = ver_res;
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data.zoom_level = zoom_level;
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data.allow_dpi_override = allow_dpi_override;
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data.simulator_mode = simulator_mode;
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data.mutex = CreateEventExW(NULL, NULL, 0, EVENT_ALL_ACCESS);
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data.display = NULL;
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if(!data.mutex) {
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return NULL;
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}
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HANDLE thread = (HANDLE)_beginthreadex(
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NULL,
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0,
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lv_windows_display_thread_entrypoint,
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&data,
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0,
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NULL);
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LV_ASSERT_NULL(thread);
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WaitForSingleObjectEx(data.mutex, INFINITE, FALSE);
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if(thread) {
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CloseHandle(thread);
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}
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if(data.mutex) {
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CloseHandle(data.mutex);
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}
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return data.display;
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}
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HWND lv_windows_get_display_window_handle(lv_display_t * display)
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{
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return (HWND)lv_display_get_driver_data(display);
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}
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int32_t lv_windows_zoom_to_logical(int32_t physical, int32_t zoom_level)
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{
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return MulDiv(physical, LV_WINDOWS_ZOOM_BASE_LEVEL, zoom_level);
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}
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int32_t lv_windows_zoom_to_physical(int32_t logical, int32_t zoom_level)
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{
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return MulDiv(logical, zoom_level, LV_WINDOWS_ZOOM_BASE_LEVEL);
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}
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int32_t lv_windows_dpi_to_logical(int32_t physical, int32_t dpi)
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{
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return MulDiv(physical, USER_DEFAULT_SCREEN_DPI, dpi);
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}
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int32_t lv_windows_dpi_to_physical(int32_t logical, int32_t dpi)
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{
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return MulDiv(logical, dpi, USER_DEFAULT_SCREEN_DPI);
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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static unsigned int __stdcall lv_windows_display_thread_entrypoint(
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void * parameter)
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{
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lv_windows_create_display_data_t * data = parameter;
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LV_ASSERT_NULL(data);
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DWORD window_style = WS_OVERLAPPEDWINDOW;
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if(data->simulator_mode) {
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window_style &= ~(WS_SIZEBOX | WS_MAXIMIZEBOX | WS_THICKFRAME);
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}
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HWND window_handle = CreateWindowExW(
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WS_EX_CLIENTEDGE,
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L"LVGL.Window",
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data->title,
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window_style,
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CW_USEDEFAULT,
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0,
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data->hor_res,
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data->ver_res,
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NULL,
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NULL,
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NULL,
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data);
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if(!window_handle) {
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return 0;
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}
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lv_windows_window_context_t * context = lv_windows_get_window_context(
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window_handle);
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if(!context) {
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return 0;
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}
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data->display = context->display_device_object;
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ShowWindow(window_handle, SW_SHOW);
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UpdateWindow(window_handle);
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LV_ASSERT_NULL(SetEvent(data->mutex));
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data = NULL;
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MSG message;
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while(GetMessageW(&message, NULL, 0, 0)) {
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TranslateMessage(&message);
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DispatchMessageW(&message);
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}
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return 0;
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}
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#endif // LV_USE_WINDOWS
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@@ -0,0 +1,127 @@
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/**
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* @file lv_windows_display.h
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*
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*/
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#ifndef LV_WINDOWS_DISPLAY_H
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#define LV_WINDOWS_DISPLAY_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include "../../display/lv_display.h"
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#include "../../indev/lv_indev.h"
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#if LV_USE_WINDOWS
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#include <windows.h>
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/*********************
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* DEFINES
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*********************/
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#define LV_WINDOWS_ZOOM_BASE_LEVEL 100
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#ifndef USER_DEFAULT_SCREEN_DPI
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#define USER_DEFAULT_SCREEN_DPI 96
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#endif
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* @brief Create a LVGL display object.
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* @param title The window title of LVGL display.
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* @param hor_res The horizontal resolution value of LVGL display.
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* @param ver_res The vertical resolution value of LVGL display.
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* @param zoom_level The zoom level value. Base value is 100 a.k.a 100%.
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* @param allow_dpi_override Allow DPI override if true, or follow the
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* Windows DPI scaling setting dynamically.
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* @param simulator_mode Create simulator mode display if true, or create
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* application mode display.
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* @return The created LVGL display object.
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*/
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lv_display_t * lv_windows_create_display(
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const wchar_t * title,
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int32_t hor_res,
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int32_t ver_res,
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int32_t zoom_level,
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bool allow_dpi_override,
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bool simulator_mode);
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/**
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* @brief Get the window handle from specific LVGL display object.
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* @param display The specific LVGL display object.
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* @return The window handle from specific LVGL display object.
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*/
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HWND lv_windows_get_display_window_handle(lv_display_t * display);
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/**
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* @brief Get logical pixel value from physical pixel value taken account
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* with zoom level.
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* @param physical The physical pixel value taken account with zoom level.
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* @param zoom_level The zoom level value. Base value is 100 a.k.a 100%.
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* @return The logical pixel value.
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* @remark It uses the same calculation style as Windows OS implementation.
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* It will be useful for integrate LVGL Windows backend to other
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* Windows applications.
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*/
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int32_t lv_windows_zoom_to_logical(int32_t physical, int32_t zoom_level);
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/**
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* @brief Get physical pixel value taken account with zoom level from
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* logical pixel value.
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* @param logical The logical pixel value.
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* @param zoom_level The zoom level value. Base value is 100 a.k.a 100%.
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* @return The physical pixel value taken account with zoom level.
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* @remark It uses the same calculation style as Windows OS implementation.
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* It will be useful for integrate LVGL Windows backend to other
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* Windows applications.
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*/
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int32_t lv_windows_zoom_to_physical(int32_t logical, int32_t zoom_level);
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|
||||
/**
|
||||
* @brief Get logical pixel value from physical pixel value taken account
|
||||
* with DPI scaling.
|
||||
* @param physical The physical pixel value taken account with DPI scaling.
|
||||
* @param dpi The DPI scaling value. Base value is USER_DEFAULT_SCREEN_DPI.
|
||||
* @return The logical pixel value.
|
||||
* @remark It uses the same calculation style as Windows OS implementation.
|
||||
* It will be useful for integrate LVGL Windows backend to other
|
||||
* Windows applications.
|
||||
*/
|
||||
int32_t lv_windows_dpi_to_logical(int32_t physical, int32_t dpi);
|
||||
|
||||
/**
|
||||
* @brief Get physical pixel value taken account with DPI scaling from
|
||||
* logical pixel value.
|
||||
* @param logical The logical pixel value.
|
||||
* @param dpi The DPI scaling value. Base value is USER_DEFAULT_SCREEN_DPI.
|
||||
* @return The physical pixel value taken account with DPI scaling.
|
||||
* @remark It uses the same calculation style as Windows OS implementation.
|
||||
* It will be useful for integrate LVGL Windows backend to other
|
||||
* Windows applications.
|
||||
*/
|
||||
int32_t lv_windows_dpi_to_physical(int32_t logical, int32_t dpi);
|
||||
|
||||
/**********************
|
||||
* MACROS
|
||||
**********************/
|
||||
|
||||
#endif // LV_USE_WINDOWS
|
||||
|
||||
#ifdef __cplusplus
|
||||
} /*extern "C"*/
|
||||
#endif
|
||||
|
||||
#endif /*LV_WINDOWS_DISPLAY_H*/
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,83 @@
|
||||
/**
|
||||
* @file lv_windows_input.h
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef LV_WINDOWS_INPUT_H
|
||||
#define LV_WINDOWS_INPUT_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/*********************
|
||||
* INCLUDES
|
||||
*********************/
|
||||
|
||||
#include "../../display/lv_display.h"
|
||||
#include "../../indev/lv_indev.h"
|
||||
|
||||
#if LV_USE_WINDOWS
|
||||
|
||||
#include <windows.h>
|
||||
|
||||
/*********************
|
||||
* DEFINES
|
||||
*********************/
|
||||
|
||||
/**********************
|
||||
* TYPEDEFS
|
||||
**********************/
|
||||
|
||||
/**********************
|
||||
* GLOBAL PROTOTYPES
|
||||
**********************/
|
||||
|
||||
/**
|
||||
* @brief Get the window handle from specific LVGL input device object.
|
||||
* @param indev The specific LVGL input device object.
|
||||
* @return The window handle from specific LVGL input device object.
|
||||
*/
|
||||
HWND lv_windows_get_indev_window_handle(lv_indev_t * indev);
|
||||
|
||||
/**
|
||||
* @brief Open a LVGL pointer input device object for the specific LVGL
|
||||
* display object, or create it if the LVGL pointer input device
|
||||
* object is not created or removed before.
|
||||
* @param display The specific LVGL display object.
|
||||
* @return The LVGL pointer input device object for the specific LVGL
|
||||
* display object.
|
||||
*/
|
||||
lv_indev_t * lv_windows_acquire_pointer_indev(lv_display_t * display);
|
||||
|
||||
/**
|
||||
* @brief Open a LVGL keypad input device object for the specific LVGL
|
||||
* display object, or create it if the LVGL keypad input device
|
||||
* object is not created or removed before.
|
||||
* @param display The specific LVGL display object.
|
||||
* @return The LVGL keypad input device object for the specific LVGL
|
||||
* display object.
|
||||
*/
|
||||
lv_indev_t * lv_windows_acquire_keypad_indev(lv_display_t * display);
|
||||
|
||||
/**
|
||||
* @brief Open a LVGL encoder input device object for the specific LVGL
|
||||
* display object, or create it if the LVGL encoder input device
|
||||
* object is not created or removed before.
|
||||
* @param display The specific LVGL display object.
|
||||
* @return The LVGL encoder input device object for the specific LVGL
|
||||
* display object.
|
||||
*/
|
||||
lv_indev_t * lv_windows_acquire_encoder_indev(lv_display_t * display);
|
||||
|
||||
/**********************
|
||||
* MACROS
|
||||
**********************/
|
||||
|
||||
#endif // LV_USE_WINDOWS
|
||||
|
||||
#ifdef __cplusplus
|
||||
} /*extern "C"*/
|
||||
#endif
|
||||
|
||||
#endif /*LV_WINDOWS_INPUT_H*/
|
||||
@@ -2937,6 +2937,14 @@
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/* LVGL Windows backend */
|
||||
#ifndef LV_USE_WINDOWS
|
||||
#ifdef CONFIG_LV_USE_WINDOWS
|
||||
#define LV_USE_WINDOWS CONFIG_LV_USE_WINDOWS
|
||||
#else
|
||||
#define LV_USE_WINDOWS 0
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/*==================
|
||||
* EXAMPLES
|
||||
|
||||
@@ -39,6 +39,9 @@
|
||||
#if LV_USE_DRAW_VG_LITE
|
||||
#include "draw/vg_lite/lv_draw_vg_lite.h"
|
||||
#endif
|
||||
#if LV_USE_WINDOWS
|
||||
#include "src/dev/windows/lv_windows_context.h"
|
||||
#endif
|
||||
|
||||
/*********************
|
||||
* DEFINES
|
||||
@@ -185,6 +188,10 @@ void lv_init(void)
|
||||
lv_draw_sdl_init();
|
||||
#endif
|
||||
|
||||
#if LV_USE_WINDOWS
|
||||
lv_windows_platform_init();
|
||||
#endif
|
||||
|
||||
_lv_obj_style_init();
|
||||
|
||||
/*Initialize the screen refresh system*/
|
||||
|
||||
Reference in New Issue
Block a user