Mirrors_UI_SDK/lvgl
1
0
Fork 0
mirror of https://github.com/lvgl/lvgl.git synced 2026-05-28 05:26:18 +08:00
Code Issues Actions 82 Packages Projects Releases Wiki Activity

lv_theme: add live update feature

Browse Source
This commit is contained in:
Gabor Kiss-Vamosi
2018-09-06 01:28:58 +02:00
parent 54f6e42a44
commit 467fd77a28
2 changed files with 66 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lv_conf_templ.h
+10 -5
View File
@@ -24,11 +24,6 @@
#define LV_MEM_CUSTOM_ALLOC malloc /*Wrapper to malloc*/
#define LV_MEM_CUSTOM_FREE free /*Wrapper to free*/
#endif /*LV_MEM_CUSTOM*/
#define LV_TICK_CUSTOM 0 /*1: use a custom tick source (removing the need to manually update the tick with `lv_tick_inc`) */
#if LV_TICK_CUSTOM == 1
#define LV_TICK_CUSTOM_INCLUDE "Arduino.h" /*Header for the sys time function*/
#define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis()) /*Expression evaluating to current systime in ms*/
#endif /*LV_TICK_CUSTOM*/
/*===================
Graphical settings
@@ -95,6 +90,14 @@
#define LV_COMPILER_NON_CONST_INIT_SUPPORTED 0 /* 1: Initialization with non constant values are supported (In Visual studio it is not supported)*/
//#define _CRT_SECURE_NO_WARNINGS /* Visual Studio needs it to use `strcpy`, `sprintf` etc*/
/*HAL settings*/
#define LV_TICK_CUSTOM 0 /*1: use a custom tick source (removing the need to manually update the tick with `lv_tick_inc`) */
#if LV_TICK_CUSTOM == 1
#define LV_TICK_CUSTOM_INCLUDE "Arduino.h" /*Header for the sys time function*/
#define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis()) /*Expression evaluating to current systime in ms*/
#endif /*LV_TICK_CUSTOM*/
/*Log settings*/
#define USE_LV_LOG 1 /*Enable/disable the log module*/
#if USE_LV_LOG
@@ -113,6 +116,8 @@
/*================
* THEME USAGE
*================*/
#define LV_THEME_LIVE_UPDATE 0 /*Enable to change the theme in run time. Requires 8..10 kB extra RAM*/
#define USE_LV_THEME_TEMPL 0 /*Just for test*/
#define USE_LV_THEME_DEFAULT 0 /*Built mainly from the built-in styles. Consumes very few RAM*/
#define USE_LV_THEME_ALIEN 0 /*Dark futuristic theme*/
lv_themes/lv_theme.c
+56 -1
View File
@@ -7,6 +7,7 @@
* INCLUDES
*********************/
#include "lv_theme.h"
#include "../lv_core/lv_obj.h"
/*********************
* DEFINES
@@ -23,7 +24,23 @@
/**********************
* STATIC VARIABLES
**********************/
#if LV_THEME_LIVE_UPDATE == 0
static lv_theme_t * current_theme;
#else
/* If live update is used then a big `lv_style_t` array is used to store the real styles of the theme not only pointers.
* On `lv_theme_set_current` the styles of the theme are copied to this array.
* The pointers in `current_theme` are initialized to point to the styles in the array.
* This way the theme styles will always point to the same memory address even after theme is change.
* (The pointers in the theme points to the styles declared by the theme itself) */
/* Store the styles in this array.
* Can't determine the size in compile time because sizeof is not evaluated (should be `sizeof(lv_theme_t) / sizeof(lv_style_t*)`).
* Error will be generated in run time if too small.*/
static lv_style_t th_styles[100];
static bool inited = false;
static lv_theme_t current_theme;
#endif
/**********************
* MACROS
@@ -38,9 +55,42 @@ static lv_theme_t * current_theme;
* From now, all the created objects will use styles from this theme by default
* @param th pointer to theme (return value of: 'lv_theme_init_xxx()')
*/
void lv_theme_set_current(lv_theme_t * th)
void lv_theme_set_current(lv_theme_t *th)
{
#if LV_THEME_LIVE_UPDATE == 0
current_theme = th;
#else
uint32_t style_num = sizeof(lv_theme_t) / sizeof(lv_style_t*); /*Number of styles in a theme*/
if(!inited) {
/*It's not sure `th_styles` is big enough. Check it now!*/
if(style_num > sizeof(th_styles) / sizeof(lv_style_t)) {
LV_LOG_ERROR("Themes: th_styles array is too small. Increase it's size!");
while(1);
}
/*Initialize the style pointers `current_theme` to point to the `th_styles` style array */
uint16_t i;
lv_style_t ** cur_th_style_p = (lv_style_t **) &current_theme;
for(i = 0; i < style_num; i++) {
uint64_t adr = (uint64_t)&th_styles[i];
memcpy(&cur_th_style_p[i], &adr, sizeof(lv_style_t*));
}
inited = true;
}
/*Copy the styles pointed by the new theme to the `th_styles` style array*/
uint16_t i;
lv_style_t ** th_style = (lv_style_t **) th;
for(i = 0; i < style_num; i++) {
uint64_t s = (uint64_t)th_style[i];
if(s) memcpy(&th_styles[i], (void*)s, sizeof(lv_style_t));
}
/*Let the object know their style might change*/
lv_obj_report_style_mod(NULL);
#endif
}
/**
@@ -49,7 +99,12 @@ void lv_theme_set_current(lv_theme_t * th)
*/
lv_theme_t * lv_theme_get_current(void)
{
#if LV_THEME_LIVE_UPDATE == 0
return current_theme;
#else
if(!inited) return NULL;
else return &current_theme;
#endif
}
/**********************