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lvgl_cpp/lvgl/core/lv_obj.c

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/**
* @file lv_obj.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_obj.h"
#include "lv_indev.h"
#include "lv_refr.h"
#include "lv_group.h"
#include "lv_disp.h"
#include "lv_theme.h"
#include "../misc/lv_assert.h"
#include "../draw/lv_draw.h"
#include "../misc/lv_anim.h"
#include "../misc/lv_timer.h"
#include "../misc/lv_async.h"
#include "../misc/lv_fs.h"
#include "../misc/lv_gc.h"
#include "../misc/lv_math.h"
#include "../misc/lv_log.h"
#include "../hal/lv_hal.h"
#include "../extra/lv_extra.h"
#include <stdint.h>
#include <string.h>
#if LV_USE_GPU_STM32_DMA2D
#include "../draw/stm32_dma2d/lv_gpu_stm32_dma2d.h"
#endif
#if LV_USE_GPU_NXP_PXP && LV_USE_GPU_NXP_PXP_AUTO_INIT
#include "../gpu/lv_gpu_nxp_pxp.h"
#include "../gpu/lv_gpu_nxp_pxp_osa.h"
#endif
/*********************
* DEFINES
*********************/
#define MY_CLASS &lv_obj_class
#define LV_OBJ_DEF_WIDTH (LV_DPX(100))
#define LV_OBJ_DEF_HEIGHT (LV_DPX(50))
#define STYLE_TRANSITION_MAX 32
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_obj_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void lv_obj_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void lv_obj_draw(lv_event_t * e);
static void lv_obj_event(const lv_obj_class_t * class_p, lv_event_t * e);
static void draw_scrollbar(lv_obj_t * obj, lv_draw_ctx_t * draw_ctx);
static lv_res_t scrollbar_init_draw_dsc(lv_obj_t * obj, lv_draw_rect_dsc_t * dsc);
static bool obj_valid_child(const lv_obj_t * parent, const lv_obj_t * obj_to_find);
static void lv_obj_set_state(lv_obj_t * obj, lv_state_t new_state);
/**********************
* STATIC VARIABLES
**********************/
static bool lv_initialized = false;
const lv_obj_class_t lv_obj_class = {
.constructor_cb = lv_obj_constructor,
.destructor_cb = lv_obj_destructor,
.event_cb = lv_obj_event,
.width_def = LV_DPI_DEF,
.height_def = LV_DPI_DEF,
.editable = LV_OBJ_CLASS_EDITABLE_FALSE,
.group_def = LV_OBJ_CLASS_GROUP_DEF_FALSE,
.instance_size = (sizeof(lv_obj_t)),
.base_class = NULL,
};
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
bool lv_is_initialized(void)
{
return lv_initialized;
}
void lv_init(void)
{
/*Do nothing if already initialized*/
if(lv_initialized) {
LV_LOG_WARN("lv_init: already inited");
return;
}
LV_LOG_INFO("begin");
/*Initialize the misc modules*/
lv_mem_init();
_lv_timer_core_init();
_lv_fs_init();
_lv_anim_core_init();
_lv_group_init();
lv_draw_init();
#if LV_USE_GPU_STM32_DMA2D
/*Initialize DMA2D GPU*/
lv_draw_stm32_dma2d_init();
#endif
#if LV_USE_GPU_NXP_PXP && LV_USE_GPU_NXP_PXP_AUTO_INIT
if(lv_gpu_nxp_pxp_init(&pxp_default_cfg) != LV_RES_OK) {
LV_LOG_ERROR("PXP init error. STOP.\n");
for(; ;) ;
}
#endif
_lv_obj_style_init();
_lv_ll_init(&LV_GC_ROOT(_lv_disp_ll), sizeof(lv_disp_t));
_lv_ll_init(&LV_GC_ROOT(_lv_indev_ll), sizeof(lv_indev_t));
/*Initialize the screen refresh system*/
_lv_refr_init();
_lv_img_decoder_init();
#if LV_IMG_CACHE_DEF_SIZE
lv_img_cache_set_size(LV_IMG_CACHE_DEF_SIZE);
#endif
/*Test if the IDE has UTF-8 encoding*/
char * txt = "Á";
uint8_t * txt_u8 = (uint8_t *)txt;
if(txt_u8[0] != 0xc3 || txt_u8[1] != 0x81 || txt_u8[2] != 0x00) {
LV_LOG_WARN("The strings have no UTF-8 encoding. Non-ASCII characters won't be displayed.");
}
uint32_t endianess_test = 0x11223344;
uint8_t * endianess_test_p = (uint8_t *) &endianess_test;
bool big_endian = endianess_test_p[0] == 0x11 ? true : false;
if(big_endian) {
LV_ASSERT_MSG(LV_BIG_ENDIAN_SYSTEM == 1,
"It's a big endian system but LV_BIG_ENDIAN_SYSTEM is not enabled in lv_conf.h");
}
else {
LV_ASSERT_MSG(LV_BIG_ENDIAN_SYSTEM == 0,
"It's a little endian system but LV_BIG_ENDIAN_SYSTEM is enabled in lv_conf.h");
}
#if LV_USE_ASSERT_MEM_INTEGRITY
LV_LOG_WARN("Memory integrity checks are enabled via LV_USE_ASSERT_MEM_INTEGRITY which makes LVGL much slower");
#endif
#if LV_USE_ASSERT_OBJ
LV_LOG_WARN("Object sanity checks are enabled via LV_USE_ASSERT_OBJ which makes LVGL much slower");
#endif
#if LV_USE_ASSERT_STYLE
LV_LOG_WARN("Style sanity checks are enabled that uses more RAM");
#endif
#if LV_LOG_LEVEL == LV_LOG_LEVEL_TRACE
LV_LOG_WARN("Log level is set to 'Trace' which makes LVGL much slower");
#endif
lv_extra_init();
lv_initialized = true;
LV_LOG_TRACE("finished");
}
#if LV_ENABLE_GC || !LV_MEM_CUSTOM
void lv_deinit(void)
{
_lv_gc_clear_roots();
lv_disp_set_default(NULL);
lv_mem_deinit();
lv_initialized = false;
LV_LOG_INFO("lv_deinit done");
#if LV_USE_LOG
lv_log_register_print_cb(NULL);
#endif
}
#endif
lv_obj_t * lv_obj_create(lv_obj_t * parent)
{
LV_LOG_INFO("begin");
lv_obj_t * obj = lv_obj_class_create_obj(MY_CLASS, parent);
lv_obj_class_init_obj(obj);
return obj;
}
/*=====================
* Setter functions
*====================*/
/*-----------------
* Attribute set
*----------------*/
void lv_obj_add_flag(lv_obj_t * obj, lv_obj_flag_t f)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
bool was_on_layout = lv_obj_is_layout_positioned(obj);
if(f & LV_OBJ_FLAG_HIDDEN) lv_obj_invalidate(obj);
obj->flags |= f;
if(f & LV_OBJ_FLAG_HIDDEN) {
lv_obj_invalidate(obj);
}
if((was_on_layout != lv_obj_is_layout_positioned(obj)) || (f & (LV_OBJ_FLAG_LAYOUT_1 | LV_OBJ_FLAG_LAYOUT_2))) {
lv_obj_mark_layout_as_dirty(lv_obj_get_parent(obj));
lv_obj_mark_layout_as_dirty(obj);
}
if(f & LV_OBJ_FLAG_SCROLLABLE) {
lv_area_t hor_area, ver_area;
lv_obj_get_scrollbar_area(obj, &hor_area, &ver_area);
lv_obj_invalidate_area(obj, &hor_area);
lv_obj_invalidate_area(obj, &ver_area);
}
}
void lv_obj_clear_flag(lv_obj_t * obj, lv_obj_flag_t f)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
bool was_on_layout = lv_obj_is_layout_positioned(obj);
if(f & LV_OBJ_FLAG_SCROLLABLE) {
lv_area_t hor_area, ver_area;
lv_obj_get_scrollbar_area(obj, &hor_area, &ver_area);
lv_obj_invalidate_area(obj, &hor_area);
lv_obj_invalidate_area(obj, &ver_area);
}
obj->flags &= (~f);
if(f & LV_OBJ_FLAG_HIDDEN) {
lv_obj_invalidate(obj);
if(lv_obj_is_layout_positioned(obj)) {
lv_obj_mark_layout_as_dirty(lv_obj_get_parent(obj));
lv_obj_mark_layout_as_dirty(obj);
}
}
if((was_on_layout != lv_obj_is_layout_positioned(obj)) || (f & (LV_OBJ_FLAG_LAYOUT_1 | LV_OBJ_FLAG_LAYOUT_2))) {
lv_obj_mark_layout_as_dirty(lv_obj_get_parent(obj));
}
}
void lv_obj_add_state(lv_obj_t * obj, lv_state_t state)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_state_t new_state = obj->state | state;
if(obj->state != new_state) {
lv_obj_set_state(obj, new_state);
}
}
void lv_obj_clear_state(lv_obj_t * obj, lv_state_t state)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_state_t new_state = obj->state & (~state);
if(obj->state != new_state) {
lv_obj_set_state(obj, new_state);
}
}
/*=======================
* Getter functions
*======================*/
bool lv_obj_has_flag(const lv_obj_t * obj, lv_obj_flag_t f)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
return (obj->flags & f) == f ? true : false;
}
bool lv_obj_has_flag_any(const lv_obj_t * obj, lv_obj_flag_t f)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
return (obj->flags & f) ? true : false;
}
lv_state_t lv_obj_get_state(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
return obj->state;
}
bool lv_obj_has_state(const lv_obj_t * obj, lv_state_t state)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
return obj->state & state ? true : false;
}
void * lv_obj_get_group(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
if(obj->spec_attr) return obj->spec_attr->group_p;
else return NULL;
}
/*-------------------
* OTHER FUNCTIONS
*------------------*/
void lv_obj_allocate_spec_attr(lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
if(obj->spec_attr == NULL) {
static uint32_t x = 0;
x++;
obj->spec_attr = lv_mem_alloc(sizeof(_lv_obj_spec_attr_t));
LV_ASSERT_MALLOC(obj->spec_attr);
if(obj->spec_attr == NULL) return;
lv_memset_00(obj->spec_attr, sizeof(_lv_obj_spec_attr_t));
obj->spec_attr->scroll_dir = LV_DIR_ALL;
obj->spec_attr->scrollbar_mode = LV_SCROLLBAR_MODE_AUTO;
}
}
bool lv_obj_check_type(const lv_obj_t * obj, const lv_obj_class_t * class_p)
{
if(obj == NULL) return false;
return obj->class_p == class_p ? true : false;
}
bool lv_obj_has_class(const lv_obj_t * obj, const lv_obj_class_t * class_p)
{
const lv_obj_class_t * obj_class = obj->class_p;
while(obj_class) {
if(obj_class == class_p) return true;
obj_class = obj_class->base_class;
}
return false;
}
const lv_obj_class_t * lv_obj_get_class(const lv_obj_t * obj)
{
return obj->class_p;
}
bool lv_obj_is_valid(const lv_obj_t * obj)
{
lv_disp_t * disp = lv_disp_get_next(NULL);
while(disp) {
uint32_t i;
for(i = 0; i < disp->screen_cnt; i++) {
if(disp->screens[i] == obj) return true;
bool found = obj_valid_child(disp->screens[i], obj);
if(found) return true;
}
disp = lv_disp_get_next(disp);
}
return false;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_obj_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
LV_TRACE_OBJ_CREATE("begin");
lv_obj_t * parent = obj->parent;
if(parent) {
lv_coord_t sl = lv_obj_get_scroll_left(parent);
lv_coord_t st = lv_obj_get_scroll_top(parent);
obj->coords.y1 = parent->coords.y1 + lv_obj_get_style_pad_top(parent, LV_PART_MAIN) - st;
obj->coords.y2 = obj->coords.y1 - 1;
obj->coords.x1 = parent->coords.x1 + lv_obj_get_style_pad_left(parent, LV_PART_MAIN) - sl;
obj->coords.x2 = obj->coords.x1 - 1;
}
/*Set attributes*/
obj->flags = LV_OBJ_FLAG_CLICKABLE;
obj->flags |= LV_OBJ_FLAG_SNAPPABLE;
if(parent) obj->flags |= LV_OBJ_FLAG_PRESS_LOCK;
if(parent) obj->flags |= LV_OBJ_FLAG_SCROLL_CHAIN;
obj->flags |= LV_OBJ_FLAG_CLICK_FOCUSABLE;
obj->flags |= LV_OBJ_FLAG_SCROLLABLE;
obj->flags |= LV_OBJ_FLAG_SCROLL_ELASTIC;
obj->flags |= LV_OBJ_FLAG_SCROLL_MOMENTUM;
obj->flags |= LV_OBJ_FLAG_SCROLL_WITH_ARROW;
if(parent) obj->flags |= LV_OBJ_FLAG_GESTURE_BUBBLE;
LV_TRACE_OBJ_CREATE("finished");
}
static void lv_obj_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
_lv_event_mark_deleted(obj);
/*Remove all style*/
lv_obj_enable_style_refresh(false); /*No need to refresh the style because the object will be deleted*/
lv_obj_remove_style_all(obj);
lv_obj_enable_style_refresh(true);
/*Remove the animations from this object*/
lv_anim_del(obj, NULL);
/*Delete from the group*/
lv_group_t * group = lv_obj_get_group(obj);
if(group) lv_group_remove_obj(obj);
if(obj->spec_attr) {
if(obj->spec_attr->children) {
lv_mem_free(obj->spec_attr->children);
obj->spec_attr->children = NULL;
}
if(obj->spec_attr->event_dsc) {
lv_mem_free(obj->spec_attr->event_dsc);
obj->spec_attr->event_dsc = NULL;
}
lv_mem_free(obj->spec_attr);
obj->spec_attr = NULL;
}
}
static void lv_obj_draw(lv_event_t * e)
{
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * obj = lv_event_get_target(e);
if(code == LV_EVENT_COVER_CHECK) {
lv_cover_check_info_t * info = lv_event_get_param(e);
if(info->res == LV_COVER_RES_MASKED) return;
if(lv_obj_get_style_clip_corner(obj, LV_PART_MAIN)) {
info->res = LV_COVER_RES_MASKED;
return;
}
/*Most trivial test. Is the mask fully IN the object? If no it surely doesn't cover it*/
lv_coord_t r = lv_obj_get_style_radius(obj, LV_PART_MAIN);
lv_coord_t w = lv_obj_get_style_transform_width(obj, LV_PART_MAIN);
lv_coord_t h = lv_obj_get_style_transform_height(obj, LV_PART_MAIN);
lv_area_t coords;
lv_area_copy(&coords, &obj->coords);
coords.x1 -= w;
coords.x2 += w;
coords.y1 -= h;
coords.y2 += h;
if(_lv_area_is_in(info->area, &coords, r) == false) {
info->res = LV_COVER_RES_NOT_COVER;
return;
}
if(lv_obj_get_style_bg_opa(obj, LV_PART_MAIN) < LV_OPA_MAX) {
info->res = LV_COVER_RES_NOT_COVER;
return;
}
#if LV_DRAW_COMPLEX
if(lv_obj_get_style_blend_mode(obj, LV_PART_MAIN) != LV_BLEND_MODE_NORMAL) {
info->res = LV_COVER_RES_NOT_COVER;
return;
}
#endif
if(lv_obj_get_style_opa(obj, LV_PART_MAIN) < LV_OPA_MAX) {
info->res = LV_COVER_RES_NOT_COVER;
return;
}
info->res = LV_COVER_RES_COVER;
}
else if(code == LV_EVENT_DRAW_MAIN) {
lv_draw_ctx_t * draw_ctx = lv_event_get_draw_ctx(e);
lv_draw_rect_dsc_t draw_dsc;
lv_draw_rect_dsc_init(&draw_dsc);
/*If the border is drawn later disable loading its properties*/
if(lv_obj_get_style_border_post(obj, LV_PART_MAIN)) {
draw_dsc.border_post = 1;
}
lv_obj_init_draw_rect_dsc(obj, LV_PART_MAIN, &draw_dsc);
lv_coord_t w = lv_obj_get_style_transform_width(obj, LV_PART_MAIN);
lv_coord_t h = lv_obj_get_style_transform_height(obj, LV_PART_MAIN);
lv_area_t coords;
lv_area_copy(&coords, &obj->coords);
coords.x1 -= w;
coords.x2 += w;
coords.y1 -= h;
coords.y2 += h;
lv_obj_draw_part_dsc_t part_dsc;
lv_obj_draw_dsc_init(&part_dsc, draw_ctx);
part_dsc.class_p = MY_CLASS;
part_dsc.type = LV_OBJ_DRAW_PART_RECTANGLE;
part_dsc.rect_dsc = &draw_dsc;
part_dsc.draw_area = &coords;
part_dsc.part = LV_PART_MAIN;
lv_event_send(obj, LV_EVENT_DRAW_PART_BEGIN, &part_dsc);
#if LV_DRAW_COMPLEX
/*With clip corner enabled draw the bg img separately to make it clipped*/
bool clip_corner = (lv_obj_get_style_clip_corner(obj, LV_PART_MAIN) && draw_dsc.radius != 0) ? true : false;
const void * bg_img_src = draw_dsc.bg_img_src;
if(clip_corner) {
draw_dsc.bg_img_src = NULL;
}
#endif
lv_draw_rect(draw_ctx, &draw_dsc, &coords);
#if LV_DRAW_COMPLEX
if(clip_corner) {
lv_draw_mask_radius_param_t * mp = lv_mem_buf_get(sizeof(lv_draw_mask_radius_param_t));
lv_draw_mask_radius_init(mp, &obj->coords, draw_dsc.radius, false);
/*Add the mask and use `obj+8` as custom id. Don't use `obj` directly because it might be used by the user*/
lv_draw_mask_add(mp, obj + 8);
if(bg_img_src) {
draw_dsc.bg_opa = LV_OPA_TRANSP;
draw_dsc.border_opa = LV_OPA_TRANSP;
draw_dsc.outline_opa = LV_OPA_TRANSP;
draw_dsc.shadow_opa = LV_OPA_TRANSP;
draw_dsc.bg_img_src = bg_img_src;
lv_draw_rect(draw_ctx, &draw_dsc, &coords);
}
}
#endif
lv_event_send(obj, LV_EVENT_DRAW_PART_END, &part_dsc);
}
else if(code == LV_EVENT_DRAW_POST) {
lv_draw_ctx_t * draw_ctx = lv_event_get_draw_ctx(e);
draw_scrollbar(obj, draw_ctx);
#if LV_DRAW_COMPLEX
if(lv_obj_get_style_clip_corner(obj, LV_PART_MAIN)) {
lv_draw_mask_radius_param_t * param = lv_draw_mask_remove_custom(obj + 8);
if(param) {
lv_draw_mask_free_param(param);
lv_mem_buf_release(param);
}
}
#endif
/*If the border is drawn later disable loading other properties*/
if(lv_obj_get_style_border_post(obj, LV_PART_MAIN)) {
lv_draw_rect_dsc_t draw_dsc;
lv_draw_rect_dsc_init(&draw_dsc);
draw_dsc.bg_opa = LV_OPA_TRANSP;
draw_dsc.bg_img_opa = LV_OPA_TRANSP;
draw_dsc.outline_opa = LV_OPA_TRANSP;
draw_dsc.shadow_opa = LV_OPA_TRANSP;
lv_obj_init_draw_rect_dsc(obj, LV_PART_MAIN, &draw_dsc);
lv_coord_t w = lv_obj_get_style_transform_width(obj, LV_PART_MAIN);
lv_coord_t h = lv_obj_get_style_transform_height(obj, LV_PART_MAIN);
lv_area_t coords;
lv_area_copy(&coords, &obj->coords);
coords.x1 -= w;
coords.x2 += w;
coords.y1 -= h;
coords.y2 += h;
lv_obj_draw_part_dsc_t part_dsc;
lv_obj_draw_dsc_init(&part_dsc, draw_ctx);
part_dsc.class_p = MY_CLASS;
part_dsc.type = LV_OBJ_DRAW_PART_BORDER_POST;
part_dsc.rect_dsc = &draw_dsc;
part_dsc.draw_area = &coords;
part_dsc.part = LV_PART_MAIN;
lv_event_send(obj, LV_EVENT_DRAW_PART_BEGIN, &part_dsc);
lv_draw_rect(draw_ctx, &draw_dsc, &coords);
lv_event_send(obj, LV_EVENT_DRAW_PART_END, &part_dsc);
}
}
}
static void draw_scrollbar(lv_obj_t * obj, lv_draw_ctx_t * draw_ctx)
{
lv_area_t hor_area;
lv_area_t ver_area;
lv_obj_get_scrollbar_area(obj, &hor_area, &ver_area);
if(lv_area_get_size(&hor_area) <= 0 && lv_area_get_size(&ver_area) <= 0) return;
lv_draw_rect_dsc_t draw_dsc;
lv_res_t sb_res = scrollbar_init_draw_dsc(obj, &draw_dsc);
if(sb_res != LV_RES_OK) return;
lv_obj_draw_part_dsc_t part_dsc;
lv_obj_draw_dsc_init(&part_dsc, draw_ctx);
part_dsc.class_p = MY_CLASS;
part_dsc.type = LV_OBJ_DRAW_PART_SCROLLBAR;
part_dsc.rect_dsc = &draw_dsc;
part_dsc.part = LV_PART_SCROLLBAR;
if(lv_area_get_size(&hor_area) > 0) {
part_dsc.draw_area = &hor_area;
lv_event_send(obj, LV_EVENT_DRAW_PART_BEGIN, &part_dsc);
lv_draw_rect(draw_ctx, &draw_dsc, &hor_area);
lv_event_send(obj, LV_EVENT_DRAW_PART_END, &part_dsc);
}
if(lv_area_get_size(&ver_area) > 0) {
part_dsc.draw_area = &ver_area;
lv_event_send(obj, LV_EVENT_DRAW_PART_BEGIN, &part_dsc);
part_dsc.draw_area = &ver_area;
lv_draw_rect(draw_ctx, &draw_dsc, &ver_area);
lv_event_send(obj, LV_EVENT_DRAW_PART_END, &part_dsc);
}
}
/**
* Initialize the draw descriptor for the scrollbar
* @param obj pointer to an object
* @param dsc the draw descriptor to initialize
* @return LV_RES_OK: the scrollbar is visible; LV_RES_INV: the scrollbar is not visible
*/
static lv_res_t scrollbar_init_draw_dsc(lv_obj_t * obj, lv_draw_rect_dsc_t * dsc)
{
lv_draw_rect_dsc_init(dsc);
dsc->bg_opa = lv_obj_get_style_bg_opa(obj, LV_PART_SCROLLBAR);
if(dsc->bg_opa > LV_OPA_MIN) {
dsc->bg_color = lv_obj_get_style_bg_color(obj, LV_PART_SCROLLBAR);
}
dsc->border_opa = lv_obj_get_style_border_opa(obj, LV_PART_SCROLLBAR);
if(dsc->border_opa > LV_OPA_MIN) {
dsc->border_width = lv_obj_get_style_border_width(obj, LV_PART_SCROLLBAR);
if(dsc->border_width > 0) {
dsc->border_color = lv_obj_get_style_border_color(obj, LV_PART_SCROLLBAR);
}
else {
dsc->border_opa = LV_OPA_TRANSP;
}
}
#if LV_DRAW_COMPLEX
dsc->shadow_opa = lv_obj_get_style_shadow_opa(obj, LV_PART_SCROLLBAR);
if(dsc->shadow_opa > LV_OPA_MIN) {
dsc->shadow_width = lv_obj_get_style_shadow_width(obj, LV_PART_SCROLLBAR);
if(dsc->shadow_width > 0) {
dsc->shadow_spread = lv_obj_get_style_shadow_spread(obj, LV_PART_SCROLLBAR);
dsc->shadow_color = lv_obj_get_style_shadow_color(obj, LV_PART_SCROLLBAR);
}
else {
dsc->shadow_opa = LV_OPA_TRANSP;
}
}
lv_opa_t opa = lv_obj_get_style_opa(obj, LV_PART_SCROLLBAR);
if(opa < LV_OPA_MAX) {
dsc->bg_opa = (dsc->bg_opa * opa) >> 8;
dsc->border_opa = (dsc->bg_opa * opa) >> 8;
dsc->shadow_opa = (dsc->bg_opa * opa) >> 8;
}
if(dsc->bg_opa != LV_OPA_TRANSP || dsc->border_opa != LV_OPA_TRANSP || dsc->shadow_opa != LV_OPA_TRANSP) {
dsc->radius = lv_obj_get_style_radius(obj, LV_PART_SCROLLBAR);
return LV_RES_OK;
}
else {
return LV_RES_INV;
}
#else
if(dsc->bg_opa != LV_OPA_TRANSP || dsc->border_opa != LV_OPA_TRANSP) return LV_RES_OK;
else return LV_RES_INV;
#endif
}
static void lv_obj_event(const lv_obj_class_t * class_p, lv_event_t * e)
{
LV_UNUSED(class_p);
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * obj = lv_event_get_current_target(e);
if(code == LV_EVENT_PRESSED) {
lv_obj_add_state(obj, LV_STATE_PRESSED);
}
else if(code == LV_EVENT_RELEASED) {
lv_obj_clear_state(obj, LV_STATE_PRESSED);
void * param = lv_event_get_param(e);
/*Go the checked state if enabled*/
if(lv_indev_get_scroll_obj(param) == NULL && lv_obj_has_flag(obj, LV_OBJ_FLAG_CHECKABLE)) {
if(!(lv_obj_get_state(obj) & LV_STATE_CHECKED)) lv_obj_add_state(obj, LV_STATE_CHECKED);
else lv_obj_clear_state(obj, LV_STATE_CHECKED);
lv_res_t res = lv_event_send(obj, LV_EVENT_VALUE_CHANGED, NULL);
if(res != LV_RES_OK) return;
}
}
else if(code == LV_EVENT_PRESS_LOST) {
lv_obj_clear_state(obj, LV_STATE_PRESSED);
}
else if(code == LV_EVENT_STYLE_CHANGED) {
uint32_t child_cnt = lv_obj_get_child_cnt(obj);
for(uint32_t i = 0; i < child_cnt; i++) {
lv_obj_t * child = obj->spec_attr->children[i];
lv_obj_mark_layout_as_dirty(child);
}
}
else if(code == LV_EVENT_KEY) {
if(lv_obj_has_flag(obj, LV_OBJ_FLAG_CHECKABLE)) {
char c = *((char *)lv_event_get_param(e));
if(c == LV_KEY_RIGHT || c == LV_KEY_UP) {
lv_obj_add_state(obj, LV_STATE_CHECKED);
}
else if(c == LV_KEY_LEFT || c == LV_KEY_DOWN) {
lv_obj_clear_state(obj, LV_STATE_CHECKED);
}
/*With Enter LV_EVENT_RELEASED will send VALUE_CHANGE event*/
if(c != LV_KEY_ENTER) {
lv_res_t res = lv_event_send(obj, LV_EVENT_VALUE_CHANGED, NULL);
if(res != LV_RES_OK) return;
}
}
else if(lv_obj_has_flag(obj, LV_OBJ_FLAG_SCROLLABLE | LV_OBJ_FLAG_SCROLL_WITH_ARROW) && !lv_obj_is_editable(obj)) {
/*scroll by keypad or encoder*/
lv_anim_enable_t anim_enable = LV_ANIM_OFF;
lv_coord_t sl = lv_obj_get_scroll_left(obj);
lv_coord_t sr = lv_obj_get_scroll_right(obj);
char c = *((char *)lv_event_get_param(e));
if(c == LV_KEY_DOWN) {
/*use scroll_to_x/y functions to enforce scroll limits*/
lv_obj_scroll_to_y(obj, lv_obj_get_scroll_y(obj) + lv_obj_get_height(obj) / 4, anim_enable);
}
else if(c == LV_KEY_UP) {
lv_obj_scroll_to_y(obj, lv_obj_get_scroll_y(obj) - lv_obj_get_height(obj) / 4, anim_enable);
}
else if(c == LV_KEY_RIGHT) {
/*If the object can't be scrolled horizontally then scroll it vertically*/
if(!((lv_obj_get_scroll_dir(obj) & LV_DIR_HOR) && (sl > 0 || sr > 0)))
lv_obj_scroll_to_y(obj, lv_obj_get_scroll_y(obj) + lv_obj_get_height(obj) / 4, anim_enable);
else
lv_obj_scroll_to_x(obj, lv_obj_get_scroll_x(obj) + lv_obj_get_width(obj) / 4, anim_enable);
}
else if(c == LV_KEY_LEFT) {
/*If the object can't be scrolled horizontally then scroll it vertically*/
if(!((lv_obj_get_scroll_dir(obj) & LV_DIR_HOR) && (sl > 0 || sr > 0)))
lv_obj_scroll_to_y(obj, lv_obj_get_scroll_y(obj) - lv_obj_get_height(obj) / 4, anim_enable);
else
lv_obj_scroll_to_x(obj, lv_obj_get_scroll_x(obj) - lv_obj_get_width(obj) / 4, anim_enable);
}
}
}
else if(code == LV_EVENT_FOCUSED) {
if(lv_obj_has_flag(obj, LV_OBJ_FLAG_SCROLL_ON_FOCUS)) {
lv_obj_scroll_to_view_recursive(obj, LV_ANIM_ON);
}
bool editing = false;
editing = lv_group_get_editing(lv_obj_get_group(obj));
lv_state_t state = LV_STATE_FOCUSED;
/* Use the indev for then indev handler.
* But if the obj was focused manually it returns NULL so try to
* use the indev from the event*/
lv_indev_t * indev = lv_indev_get_act();
if(indev == NULL) indev = lv_event_get_indev(e);
lv_indev_type_t indev_type = lv_indev_get_type(indev);
if(indev_type == LV_INDEV_TYPE_KEYPAD || indev_type == LV_INDEV_TYPE_ENCODER) state |= LV_STATE_FOCUS_KEY;
if(editing) {
state |= LV_STATE_EDITED;
lv_obj_add_state(obj, state);
}
else {
lv_obj_add_state(obj, state);
lv_obj_clear_state(obj, LV_STATE_EDITED);
}
}
else if(code == LV_EVENT_SCROLL_BEGIN) {
lv_obj_add_state(obj, LV_STATE_SCROLLED);
}
else if(code == LV_EVENT_SCROLL_END) {
lv_obj_clear_state(obj, LV_STATE_SCROLLED);
if(lv_obj_get_scrollbar_mode(obj) == LV_SCROLLBAR_MODE_ACTIVE) {
lv_area_t hor_area, ver_area;
lv_obj_get_scrollbar_area(obj, &hor_area, &ver_area);
lv_obj_invalidate_area(obj, &hor_area);
lv_obj_invalidate_area(obj, &ver_area);
}
}
else if(code == LV_EVENT_DEFOCUSED) {
lv_obj_clear_state(obj, LV_STATE_FOCUSED | LV_STATE_EDITED | LV_STATE_FOCUS_KEY);
}
else if(code == LV_EVENT_SIZE_CHANGED) {
lv_coord_t align = lv_obj_get_style_align(obj, LV_PART_MAIN);
uint16_t layout = lv_obj_get_style_layout(obj, LV_PART_MAIN);
if(layout || align) {
lv_obj_mark_layout_as_dirty(obj);
}
uint32_t i;
uint32_t child_cnt = lv_obj_get_child_cnt(obj);
for(i = 0; i < child_cnt; i++) {
lv_obj_t * child = obj->spec_attr->children[i];
lv_obj_mark_layout_as_dirty(child);
}
}
else if(code == LV_EVENT_CHILD_CHANGED) {
lv_coord_t w = lv_obj_get_style_width(obj, LV_PART_MAIN);
lv_coord_t h = lv_obj_get_style_height(obj, LV_PART_MAIN);
lv_coord_t align = lv_obj_get_style_align(obj, LV_PART_MAIN);
uint16_t layout = lv_obj_get_style_layout(obj, LV_PART_MAIN);
if(layout || align || w == LV_SIZE_CONTENT || h == LV_SIZE_CONTENT) {
lv_obj_mark_layout_as_dirty(obj);
}
}
else if(code == LV_EVENT_REFR_EXT_DRAW_SIZE) {
lv_coord_t * s = lv_event_get_param(e);
lv_coord_t d = lv_obj_calculate_ext_draw_size(obj, LV_PART_MAIN);
*s = LV_MAX(*s, d);
}
else if(code == LV_EVENT_DRAW_MAIN || code == LV_EVENT_DRAW_POST || code == LV_EVENT_COVER_CHECK) {
lv_obj_draw(e);
}
}
/**
* Set the state (fully overwrite) of an object.
* If specified in the styles, transition animations will be started from the previous state to the current.
* @param obj pointer to an object
* @param state the new state
*/
static void lv_obj_set_state(lv_obj_t * obj, lv_state_t new_state)
{
if(obj->state == new_state) return;
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_state_t prev_state = obj->state;
obj->state = new_state;
_lv_style_state_cmp_t cmp_res = _lv_obj_style_state_compare(obj, prev_state, new_state);
/*If there is no difference in styles there is nothing else to do*/
if(cmp_res == _LV_STYLE_STATE_CMP_SAME) return;
_lv_obj_style_transition_dsc_t * ts = lv_mem_buf_get(sizeof(_lv_obj_style_transition_dsc_t) * STYLE_TRANSITION_MAX);
lv_memset_00(ts, sizeof(_lv_obj_style_transition_dsc_t) * STYLE_TRANSITION_MAX);
uint32_t tsi = 0;
uint32_t i;
for(i = 0; i < obj->style_cnt && tsi < STYLE_TRANSITION_MAX; i++) {
_lv_obj_style_t * obj_style = &obj->styles[i];
lv_state_t state_act = lv_obj_style_get_selector_state(obj->styles[i].selector);
lv_part_t part_act = lv_obj_style_get_selector_part(obj->styles[i].selector);
if(state_act & (~new_state)) continue; /*Skip unrelated styles*/
if(obj_style->is_trans) continue;
lv_style_value_t v;
if(lv_style_get_prop_inlined(obj_style->style, LV_STYLE_TRANSITION, &v) == false) continue;
const lv_style_transition_dsc_t * tr = v.ptr;
/*Add the props to the set if not added yet or added but with smaller weight*/
uint32_t j;
for(j = 0; tr->props[j] != 0 && tsi < STYLE_TRANSITION_MAX; j++) {
uint32_t t;
for(t = 0; t < tsi; t++) {
lv_style_selector_t selector = ts[t].selector;
lv_state_t state_ts = lv_obj_style_get_selector_state(selector);
lv_part_t part_ts = lv_obj_style_get_selector_part(selector);
if(ts[t].prop == tr->props[j] && part_ts == part_act && state_ts >= state_act) break;
}
/*If not found add it*/
if(t == tsi) {
ts[tsi].time = tr->time;
ts[tsi].delay = tr->delay;
ts[tsi].path_cb = tr->path_xcb;
ts[tsi].prop = tr->props[j];
#if LV_USE_USER_DATA
ts[tsi].user_data = tr->user_data;
#endif
ts[tsi].selector = obj_style->selector;
tsi++;
}
}
}
for(i = 0; i < tsi; i++) {
lv_part_t part_act = lv_obj_style_get_selector_part(ts[i].selector);
_lv_obj_style_create_transition(obj, part_act, prev_state, new_state, &ts[i]);
}
lv_mem_buf_release(ts);
if(cmp_res == _LV_STYLE_STATE_CMP_DIFF_REDRAW) {
lv_obj_invalidate(obj);
}
else if(cmp_res == _LV_STYLE_STATE_CMP_DIFF_LAYOUT) {
lv_obj_refresh_style(obj, LV_PART_ANY, LV_STYLE_PROP_ANY);
}
else if(cmp_res == _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD) {
lv_obj_invalidate(obj);
lv_obj_refresh_ext_draw_size(obj);
}
}
static bool obj_valid_child(const lv_obj_t * parent, const lv_obj_t * obj_to_find)
{
/*Check all children of `parent`*/
uint32_t child_cnt = 0;
if(parent->spec_attr) child_cnt = parent->spec_attr->child_cnt;
uint32_t i;
for(i = 0; i < child_cnt; i++) {
lv_obj_t * child = parent->spec_attr->children[i];
if(child == obj_to_find) {
return true;
}
/*Check the children*/
bool found = obj_valid_child(child, obj_to_find);
if(found) {
return true;
}
}
return false;
}
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