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lvgl_cpp/lvgl/core/lv_obj_style.c

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/**
* @file lv_obj_style.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_obj.h"
#include "lv_disp.h"
#include "../misc/lv_gc.h"
/*********************
* DEFINES
*********************/
#define MY_CLASS &lv_obj_class
/**********************
* TYPEDEFS
**********************/
typedef struct {
lv_obj_t * obj;
lv_style_prop_t prop;
lv_style_selector_t selector;
lv_style_value_t start_value;
lv_style_value_t end_value;
} trans_t;
typedef enum {
CACHE_ZERO = 0,
CACHE_TRUE = 1,
CACHE_UNSET = 2,
CACHE_255 = 3,
CACHE_NEED_CHECK = 4,
} cache_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static lv_style_t * get_local_style(lv_obj_t * obj, lv_style_selector_t selector);
static _lv_obj_style_t * get_trans_style(lv_obj_t * obj, uint32_t part);
static bool get_prop_core(const lv_obj_t * obj, lv_part_t part, lv_style_prop_t prop, lv_style_value_t * v);
static void report_style_change_core(void * style, lv_obj_t * obj);
static void refresh_children_style(lv_obj_t * obj);
static bool trans_del(lv_obj_t * obj, lv_part_t part, lv_style_prop_t prop, trans_t * tr_limit);
static void trans_anim_cb(void * _tr, int32_t v);
static void trans_anim_start_cb(lv_anim_t * a);
static void trans_anim_ready_cb(lv_anim_t * a);
static void fade_anim_cb(void * obj, int32_t v);
static void fade_in_anim_ready(lv_anim_t * a);
/**********************
* STATIC VARIABLES
**********************/
static bool style_refr = true;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void _lv_obj_style_init(void)
{
_lv_ll_init(&LV_GC_ROOT(_lv_obj_style_trans_ll), sizeof(trans_t));
}
void lv_obj_add_style(lv_obj_t * obj, lv_style_t * style, lv_style_selector_t selector)
{
trans_del(obj, selector, LV_STYLE_PROP_ANY, NULL);
uint32_t i;
/*Go after the transition and local styles*/
for(i = 0; i < obj->style_cnt; i++) {
if(obj->styles[i].is_trans) continue;
if(obj->styles[i].is_local) continue;
break;
}
/*Now `i` is at the first normal style. Insert the new style before this*/
/*Allocate space for the new style and shift the rest of the style to the end*/
obj->style_cnt++;
obj->styles = lv_mem_realloc(obj->styles, obj->style_cnt * sizeof(_lv_obj_style_t));
uint32_t j;
for(j = obj->style_cnt - 1; j > i ; j--) {
obj->styles[j] = obj->styles[j - 1];
}
lv_memset_00(&obj->styles[i], sizeof(_lv_obj_style_t));
obj->styles[i].style = style;
obj->styles[i].selector = selector;
lv_obj_refresh_style(obj, selector, LV_STYLE_PROP_ANY);
}
void lv_obj_remove_style(lv_obj_t * obj, lv_style_t * style, lv_style_selector_t selector)
{
lv_state_t state = lv_obj_style_get_selector_state(selector);
lv_part_t part = lv_obj_style_get_selector_part(selector);
lv_style_prop_t prop = LV_STYLE_PROP_ANY;
if(style && style->prop_cnt == 0) prop = LV_STYLE_PROP_INV;
uint32_t i = 0;
bool deleted = false;
while(i < obj->style_cnt) {
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 != LV_STATE_ANY && state_act != state) ||
(part != LV_PART_ANY && part_act != part) ||
(style != NULL && style != obj->styles[i].style)) {
i++;
continue;
}
if(obj->styles[i].is_trans) {
trans_del(obj, part, LV_STYLE_PROP_ANY, NULL);
}
if(obj->styles[i].is_local || obj->styles[i].is_trans) {
lv_style_reset(obj->styles[i].style);
lv_mem_free(obj->styles[i].style);
obj->styles[i].style = NULL;
}
/*Shift the styles after `i` by one*/
uint32_t j;
for(j = i; j < (uint32_t)obj->style_cnt - 1 ; j++) {
obj->styles[j] = obj->styles[j + 1];
}
obj->style_cnt--;
obj->styles = lv_mem_realloc(obj->styles, obj->style_cnt * sizeof(_lv_obj_style_t));
deleted = true;
/*The style from the current `i` index is removed, so `i` points to the next style.
*Therefore it doesn't needs to be incremented*/
}
if(deleted && prop != LV_STYLE_PROP_INV) {
lv_obj_refresh_style(obj, part, prop);
}
}
void lv_obj_report_style_change(lv_style_t * style)
{
if(!style_refr) return;
lv_disp_t * d = lv_disp_get_next(NULL);
while(d) {
uint32_t i;
for(i = 0; i < d->screen_cnt; i++) {
report_style_change_core(style, d->screens[i]);
}
d = lv_disp_get_next(d);
}
}
void lv_obj_refresh_style(lv_obj_t * obj, lv_style_selector_t selector, lv_style_prop_t prop)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
if(!style_refr) return;
lv_obj_invalidate(obj);
lv_part_t part = lv_obj_style_get_selector_part(selector);
bool is_layout_refr = lv_style_prop_has_flag(prop, LV_STYLE_PROP_LAYOUT_REFR);
bool is_ext_draw = lv_style_prop_has_flag(prop, LV_STYLE_PROP_EXT_DRAW);
bool is_inherit = lv_style_prop_has_flag(prop, LV_STYLE_PROP_INHERIT);
if(is_layout_refr) {
if(part == LV_PART_ANY ||
part == LV_PART_MAIN ||
lv_obj_get_style_height(obj, 0) == LV_SIZE_CONTENT ||
lv_obj_get_style_width(obj, 0) == LV_SIZE_CONTENT) {
lv_event_send(obj, LV_EVENT_STYLE_CHANGED, NULL);
lv_obj_mark_layout_as_dirty(obj);
}
}
if((part == LV_PART_ANY || part == LV_PART_MAIN) && (prop == LV_STYLE_PROP_ANY || is_layout_refr)) {
lv_obj_t * parent = lv_obj_get_parent(obj);
if(parent) lv_obj_mark_layout_as_dirty(parent);
}
if(prop == LV_STYLE_PROP_ANY || is_ext_draw) {
lv_obj_refresh_ext_draw_size(obj);
}
lv_obj_invalidate(obj);
if(prop == LV_STYLE_PROP_ANY || (is_inherit && (is_ext_draw || is_layout_refr))) {
if(part != LV_PART_SCROLLBAR) {
refresh_children_style(obj);
}
}
}
void lv_obj_enable_style_refresh(bool en)
{
style_refr = en;
}
lv_style_value_t lv_obj_get_style_prop(const lv_obj_t * obj, lv_part_t part, lv_style_prop_t prop)
{
lv_style_value_t value_act;
bool inherit = lv_style_prop_has_flag(prop, LV_STYLE_PROP_INHERIT);
bool found = false;
while(obj) {
found = get_prop_core(obj, part, prop, &value_act);
if(found) break;
if(!inherit) break;
/*If not found, check the `MAIN` style first*/
if(part != LV_PART_MAIN) {
part = LV_PART_MAIN;
continue;
}
/*Check the parent too.*/
obj = lv_obj_get_parent(obj);
}
if(!found) {
if(part == LV_PART_MAIN && (prop == LV_STYLE_WIDTH || prop == LV_STYLE_HEIGHT)) {
const lv_obj_class_t * cls = obj->class_p;
while(cls) {
if(prop == LV_STYLE_WIDTH) {
if(cls->width_def != 0) break;
}
else {
if(cls->height_def != 0) break;
}
cls = cls->base_class;
}
value_act.num = prop == LV_STYLE_WIDTH ? cls->width_def : cls->height_def;
}
else {
value_act = lv_style_prop_get_default(prop);
}
}
return value_act;
}
void lv_obj_set_local_style_prop(lv_obj_t * obj, lv_style_prop_t prop, lv_style_value_t value,
lv_style_selector_t selector)
{
lv_style_t * style = get_local_style(obj, selector);
lv_style_set_prop(style, prop, value);
lv_obj_refresh_style(obj, selector, prop);
}
lv_res_t lv_obj_get_local_style_prop(lv_obj_t * obj, lv_style_prop_t prop, lv_style_value_t * value,
lv_style_selector_t selector)
{
uint32_t i;
for(i = 0; i < obj->style_cnt; i++) {
if(obj->styles[i].is_local &&
obj->styles[i].selector == selector) {
return lv_style_get_prop(obj->styles[i].style, prop, value);
}
}
return LV_RES_INV;
}
bool lv_obj_remove_local_style_prop(lv_obj_t * obj, lv_style_prop_t prop, lv_style_selector_t selector)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
uint32_t i;
/*Find the style*/
for(i = 0; i < obj->style_cnt; i++) {
if(obj->styles[i].is_local &&
obj->styles[i].selector == selector) {
break;
}
}
/*The style is not found*/
if(i == obj->style_cnt) return false;
return lv_style_remove_prop(obj->styles[i].style, prop);
}
void _lv_obj_style_create_transition(lv_obj_t * obj, lv_part_t part, lv_state_t prev_state, lv_state_t new_state,
const _lv_obj_style_transition_dsc_t * tr_dsc)
{
trans_t * tr;
/*Get the previous and current values*/
obj->skip_trans = 1;
obj->state = prev_state;
lv_style_value_t v1 = lv_obj_get_style_prop(obj, part, tr_dsc->prop);
obj->state = new_state;
lv_style_value_t v2 = lv_obj_get_style_prop(obj, part, tr_dsc->prop);
obj->skip_trans = 0;
if(v1.ptr == v2.ptr && v1.num == v2.num && v1.color.full == v2.color.full) return;
obj->state = prev_state;
v1 = lv_obj_get_style_prop(obj, part, tr_dsc->prop);
obj->state = new_state;
_lv_obj_style_t * style_trans = get_trans_style(obj, part);
lv_style_set_prop(style_trans->style, tr_dsc->prop, v1); /*Be sure `trans_style` has a valid value*/
if(tr_dsc->prop == LV_STYLE_RADIUS) {
if(v1.num == LV_RADIUS_CIRCLE || v2.num == LV_RADIUS_CIRCLE) {
lv_coord_t whalf = lv_obj_get_width(obj) / 2;
lv_coord_t hhalf = lv_obj_get_width(obj) / 2;
if(v1.num == LV_RADIUS_CIRCLE) v1.num = LV_MIN(whalf + 1, hhalf + 1);
if(v2.num == LV_RADIUS_CIRCLE) v2.num = LV_MIN(whalf + 1, hhalf + 1);
}
}
tr = _lv_ll_ins_head(&LV_GC_ROOT(_lv_obj_style_trans_ll));
LV_ASSERT_MALLOC(tr);
if(tr == NULL) return;
tr->start_value = v1;
tr->end_value = v2;
if(tr) {
tr->obj = obj;
tr->prop = tr_dsc->prop;
tr->selector = part;
lv_anim_t a;
lv_anim_init(&a);
lv_anim_set_var(&a, tr);
lv_anim_set_exec_cb(&a, trans_anim_cb);
lv_anim_set_start_cb(&a, trans_anim_start_cb);
lv_anim_set_ready_cb(&a, trans_anim_ready_cb);
lv_anim_set_values(&a, 0x00, 0xFF);
lv_anim_set_time(&a, tr_dsc->time);
lv_anim_set_delay(&a, tr_dsc->delay);
lv_anim_set_path_cb(&a, tr_dsc->path_cb);
lv_anim_set_early_apply(&a, false);
#if LV_USE_USER_DATA
a.user_data = tr_dsc->user_data;
#endif
lv_anim_start(&a);
}
}
lv_style_value_t _lv_obj_style_apply_color_filter(const lv_obj_t * obj, uint32_t part, lv_style_value_t v)
{
if(obj == NULL) return v;
const lv_color_filter_dsc_t * f = lv_obj_get_style_color_filter_dsc(obj, part);
if(f && f->filter_cb) {
lv_opa_t f_opa = lv_obj_get_style_color_filter_opa(obj, part);
if(f_opa != 0) v.color = f->filter_cb(f, v.color, f_opa);
}
return v;
}
_lv_style_state_cmp_t _lv_obj_style_state_compare(lv_obj_t * obj, lv_state_t state1, lv_state_t state2)
{
_lv_style_state_cmp_t res = _LV_STYLE_STATE_CMP_SAME;
/*Are there any new styles for the new state?*/
uint32_t i;
for(i = 0; i < obj->style_cnt; i++) {
if(obj->styles[i].is_trans) continue;
lv_state_t state_act = lv_obj_style_get_selector_state(obj->styles[i].selector);
/*The style is valid for a state but not the other*/
bool valid1 = state_act & (~state1) ? false : true;
bool valid2 = state_act & (~state2) ? false : true;
if(valid1 != valid2) {
lv_style_t * style = obj->styles[i].style;
lv_style_value_t v;
/*If there is layout difference on the main part, return immediately. There is no more serious difference*/
bool layout_diff = false;
if(lv_style_get_prop(style, LV_STYLE_PAD_TOP, &v))layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_PAD_BOTTOM, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_PAD_LEFT, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_PAD_RIGHT, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_PAD_COLUMN, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_PAD_ROW, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_LAYOUT, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_TRANSLATE_X, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_TRANSLATE_Y, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_WIDTH, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_HEIGHT, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_MIN_WIDTH, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_MAX_WIDTH, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_MIN_HEIGHT, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_MAX_HEIGHT, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_BORDER_WIDTH, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_TRANSFORM_ANGLE, &v)) layout_diff = true;
else if(lv_style_get_prop(style, LV_STYLE_TRANSFORM_ZOOM, &v)) layout_diff = true;
if(layout_diff) {
return _LV_STYLE_STATE_CMP_DIFF_LAYOUT;
}
/*Check for draw pad changes*/
if(lv_style_get_prop(style, LV_STYLE_TRANSFORM_WIDTH, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_TRANSFORM_HEIGHT, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_TRANSFORM_ANGLE, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_TRANSFORM_ZOOM, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_OUTLINE_OPA, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_OUTLINE_PAD, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_OUTLINE_WIDTH, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_SHADOW_WIDTH, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_SHADOW_OPA, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_SHADOW_OFS_X, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_SHADOW_OFS_Y, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_SHADOW_SPREAD, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(lv_style_get_prop(style, LV_STYLE_LINE_WIDTH, &v)) res = _LV_STYLE_STATE_CMP_DIFF_DRAW_PAD;
else if(res == _LV_STYLE_STATE_CMP_SAME) res = _LV_STYLE_STATE_CMP_DIFF_REDRAW;
}
}
return res;
}
void lv_obj_fade_in(lv_obj_t * obj, uint32_t time, uint32_t delay)
{
lv_anim_t a;
lv_anim_init(&a);
lv_anim_set_var(&a, obj);
lv_anim_set_values(&a, 0, LV_OPA_COVER);
lv_anim_set_exec_cb(&a, fade_anim_cb);
lv_anim_set_ready_cb(&a, fade_in_anim_ready);
lv_anim_set_time(&a, time);
lv_anim_set_delay(&a, delay);
lv_anim_start(&a);
}
void lv_obj_fade_out(lv_obj_t * obj, uint32_t time, uint32_t delay)
{
lv_anim_t a;
lv_anim_init(&a);
lv_anim_set_var(&a, obj);
lv_anim_set_values(&a, lv_obj_get_style_opa(obj, 0), LV_OPA_TRANSP);
lv_anim_set_exec_cb(&a, fade_anim_cb);
lv_anim_set_time(&a, time);
lv_anim_set_delay(&a, delay);
lv_anim_start(&a);
}
lv_state_t lv_obj_style_get_selector_state(lv_style_selector_t selector)
{
return selector & 0xFFFF;
}
lv_part_t lv_obj_style_get_selector_part(lv_style_selector_t selector)
{
return selector & 0xFF0000;
}
lv_text_align_t lv_obj_calculate_style_text_align(const struct _lv_obj_t * obj, lv_part_t part, const char * txt)
{
lv_text_align_t align = lv_obj_get_style_text_align(obj, part);
lv_base_dir_t base_dir = lv_obj_get_style_base_dir(obj, part);
lv_bidi_calculate_align(&align, &base_dir, txt);
return align;
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Get the local style of an object for a given part and for a given state.
* If the local style for the part-state pair doesn't exist allocate and return it.
* @param obj pointer to an object
* @param selector OR-ed value of parts and state for which the style should be get
* @return pointer to the local style
*/
static lv_style_t * get_local_style(lv_obj_t * obj, lv_style_selector_t selector)
{
uint32_t i;
for(i = 0; i < obj->style_cnt; i++) {
if(obj->styles[i].is_local &&
obj->styles[i].selector == selector) {
return obj->styles[i].style;
}
}
obj->style_cnt++;
obj->styles = lv_mem_realloc(obj->styles, obj->style_cnt * sizeof(_lv_obj_style_t));
LV_ASSERT_MALLOC(obj->styles);
for(i = obj->style_cnt - 1; i > 0 ; i--) {
/*Copy only normal styles (not local and transition).
*The new local style will be added as the last local style*/
if(obj->styles[i - 1].is_local || obj->styles[i - 1].is_trans) break;
obj->styles[i] = obj->styles[i - 1];
}
lv_memset_00(&obj->styles[i], sizeof(_lv_obj_style_t));
obj->styles[i].style = lv_mem_alloc(sizeof(lv_style_t));
lv_style_init(obj->styles[i].style);
obj->styles[i].is_local = 1;
obj->styles[i].selector = selector;
return obj->styles[i].style;
}
/**
* Get the transition style of an object for a given part and for a given state.
* If the transition style for the part-state pair doesn't exist allocate and return it.
* @param obj pointer to an object
* @param selector OR-ed value of parts and state for which the style should be get
* @return pointer to the transition style
*/
static _lv_obj_style_t * get_trans_style(lv_obj_t * obj, lv_style_selector_t selector)
{
uint32_t i;
for(i = 0; i < obj->style_cnt; i++) {
if(obj->styles[i].is_trans && obj->styles[i].selector == selector) break;
}
/*Already have a transition style for it*/
if(i != obj->style_cnt) return &obj->styles[i];
obj->style_cnt++;
obj->styles = lv_mem_realloc(obj->styles, obj->style_cnt * sizeof(_lv_obj_style_t));
for(i = obj->style_cnt - 1; i > 0 ; i--) {
obj->styles[i] = obj->styles[i - 1];
}
lv_memset_00(&obj->styles[0], sizeof(_lv_obj_style_t));
obj->styles[0].style = lv_mem_alloc(sizeof(lv_style_t));
lv_style_init(obj->styles[0].style);
obj->styles[0].is_trans = 1;
obj->styles[0].selector = selector;
return &obj->styles[0];
}
static bool get_prop_core(const lv_obj_t * obj, lv_part_t part, lv_style_prop_t prop, lv_style_value_t * v)
{
uint8_t group = 1 << _lv_style_get_prop_group(prop);
int32_t weight = -1;
lv_state_t state = obj->state;
lv_state_t state_inv = ~state;
lv_style_value_t value_tmp;
bool skip_trans = obj->skip_trans;
uint32_t i;
bool found;
for(i = 0; i < obj->style_cnt; i++) {
_lv_obj_style_t * obj_style = &obj->styles[i];
if(obj_style->is_trans == false) break;
if(skip_trans) continue;
lv_part_t part_act = lv_obj_style_get_selector_part(obj->styles[i].selector);
if(part_act != part) continue;
if((obj_style->style->has_group & group) == 0) continue;
found = lv_style_get_prop(obj_style->style, prop, &value_tmp);
if(found) {
*v = value_tmp;
return true;
}
}
for(; i < obj->style_cnt; i++) {
_lv_obj_style_t * obj_style = &obj->styles[i];
lv_part_t part_act = lv_obj_style_get_selector_part(obj->styles[i].selector);
lv_state_t state_act = lv_obj_style_get_selector_state(obj->styles[i].selector);
if(part_act != part) continue;
if((obj_style->style->has_group & group) == 0) continue;
/*Be sure the style not specifies other state than the requested.
*E.g. For HOVER+PRESS object state, HOVER style only is OK, but HOVER+FOCUS style is not*/
if((state_act & state_inv)) continue;
/*Check only better candidates*/
if(state_act <= weight) continue;
found = lv_style_get_prop(obj_style->style, prop, &value_tmp);
if(found) {
if(state_act == state) {
*v = value_tmp;
return true;
}
if(weight < state_act) {
weight = state_act;
*v = value_tmp;
}
}
}
if(weight >= 0) {
*v = value_tmp;
return true;
}
else return false;
}
/**
* Refresh the style of all children of an object. (Called recursively)
* @param style refresh objects only with this
* @param obj pointer to an object
*/
static void report_style_change_core(void * style, lv_obj_t * obj)
{
uint32_t i;
for(i = 0; i < obj->style_cnt; i++) {
if(style == NULL || obj->styles[i].style == style) {
lv_obj_refresh_style(obj, LV_PART_ANY, LV_STYLE_PROP_ANY);
break;
}
}
uint32_t child_cnt = lv_obj_get_child_cnt(obj);
for(i = 0; i < child_cnt; i++) {
report_style_change_core(style, obj->spec_attr->children[i]);
}
}
/**
* Recursively refresh the style of the children. Go deeper until a not NULL style is found
* because the NULL styles are inherited from the parent
* @param obj pointer to an object
*/
static void refresh_children_style(lv_obj_t * 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_invalidate(child);
lv_event_send(child, LV_EVENT_STYLE_CHANGED, NULL);
lv_obj_invalidate(child);
refresh_children_style(child); /*Check children too*/
}
}
/**
* Remove the transition from object's part's property.
* - Remove the transition from `_lv_obj_style_trans_ll` and free it
* - Delete pending transitions
* @param obj pointer to an object which transition(s) should be removed
* @param part a part of object or 0xFF to remove from all parts
* @param prop a property or 0xFF to remove all properties
* @param tr_limit delete transitions only "older" than this. `NULL` if not used
*/
static bool trans_del(lv_obj_t * obj, lv_part_t part, lv_style_prop_t prop, trans_t * tr_limit)
{
trans_t * tr;
trans_t * tr_prev;
bool removed = false;
tr = _lv_ll_get_tail(&LV_GC_ROOT(_lv_obj_style_trans_ll));
while(tr != NULL) {
if(tr == tr_limit) break;
/*'tr' might be deleted, so get the next object while 'tr' is valid*/
tr_prev = _lv_ll_get_prev(&LV_GC_ROOT(_lv_obj_style_trans_ll), tr);
if(tr->obj == obj && (part == tr->selector || part == LV_PART_ANY) && (prop == tr->prop || prop == LV_STYLE_PROP_ANY)) {
/*Remove the transitioned property from trans. style
*to allow changing it by normal styles*/
uint32_t i;
for(i = 0; i < obj->style_cnt; i++) {
if(obj->styles[i].is_trans && (part == LV_PART_ANY || obj->styles[i].selector == part)) {
lv_style_remove_prop(obj->styles[i].style, tr->prop);
lv_anim_del(tr, NULL);
_lv_ll_remove(&LV_GC_ROOT(_lv_obj_style_trans_ll), tr);
lv_mem_free(tr);
removed = true;
}
}
}
tr = tr_prev;
}
return removed;
}
static void trans_anim_cb(void * _tr, int32_t v)
{
trans_t * tr = _tr;
lv_obj_t * obj = tr->obj;
uint32_t i;
for(i = 0; i < obj->style_cnt; i++) {
if(obj->styles[i].is_trans == 0 || obj->styles[i].selector != tr->selector) continue;
lv_style_value_t value_final;
switch(tr->prop) {
case LV_STYLE_BORDER_SIDE:
case LV_STYLE_BORDER_POST:
case LV_STYLE_BLEND_MODE:
if(v < 255) value_final.num = tr->start_value.num;
else value_final.num = tr->end_value.num;
break;
case LV_STYLE_TRANSITION:
case LV_STYLE_TEXT_FONT:
if(v < 255) value_final.ptr = tr->start_value.ptr;
else value_final.ptr = tr->end_value.ptr;
break;
case LV_STYLE_COLOR_FILTER_DSC:
if(tr->start_value.ptr == NULL) value_final.ptr = tr->end_value.ptr;
else if(tr->end_value.ptr == NULL) value_final.ptr = tr->start_value.ptr;
else if(v < 128) value_final.ptr = tr->start_value.ptr;
else value_final.ptr = tr->end_value.ptr;
break;
case LV_STYLE_BG_COLOR:
case LV_STYLE_BORDER_COLOR:
case LV_STYLE_TEXT_COLOR:
case LV_STYLE_SHADOW_COLOR:
case LV_STYLE_OUTLINE_COLOR:
case LV_STYLE_IMG_RECOLOR:
if(v <= 0) value_final.color = tr->start_value.color;
else if(v >= 255) value_final.color = tr->end_value.color;
else value_final.color = lv_color_mix(tr->end_value.color, tr->start_value.color, v);
break;
default:
if(v == 0) value_final.num = tr->start_value.num;
else if(v == 255) value_final.num = tr->end_value.num;
else value_final.num = tr->start_value.num + ((int32_t)((int32_t)(tr->end_value.num - tr->start_value.num) * v) >> 8);
break;
}
lv_style_value_t old_value;
bool refr = true;
if(lv_style_get_prop(obj->styles[i].style, tr->prop, &old_value)) {
if(value_final.ptr == old_value.ptr && value_final.color.full == old_value.color.full &&
value_final.num == old_value.num) {
refr = false;
}
}
lv_style_set_prop(obj->styles[i].style, tr->prop, value_final);
if(refr) lv_obj_refresh_style(tr->obj, tr->selector, tr->prop);
break;
}
}
static void trans_anim_start_cb(lv_anim_t * a)
{
trans_t * tr = a->var;
lv_part_t part = lv_obj_style_get_selector_part(tr->selector);
tr->start_value = lv_obj_get_style_prop(tr->obj, part, tr->prop);
/*Init prop to an invalid values to be sure `trans_del` won't delete this added `tr`*/
lv_style_prop_t prop_tmp = tr->prop;
tr->prop = LV_STYLE_PROP_INV;
/*Delete the related transitions if any*/
trans_del(tr->obj, part, prop_tmp, tr);
tr->prop = prop_tmp;
_lv_obj_style_t * style_trans = get_trans_style(tr->obj, tr->selector);
lv_style_set_prop(style_trans->style, tr->prop, tr->start_value); /*Be sure `trans_style` has a valid value*/
}
static void trans_anim_ready_cb(lv_anim_t * a)
{
trans_t * tr = a->var;
lv_obj_t * obj = tr->obj;
lv_style_prop_t prop = tr->prop;
/*Remove the transitioned property from trans. style
*if there no more transitions for this property
*It allows changing it by normal styles*/
bool running = false;
trans_t * tr_i;
_LV_LL_READ(&LV_GC_ROOT(_lv_obj_style_trans_ll), tr_i) {
if(tr_i != tr && tr_i->obj == tr->obj && tr_i->selector == tr->selector && tr_i->prop == tr->prop) {
running = true;
break;
}
}
if(!running) {
uint32_t i;
for(i = 0; i < obj->style_cnt; i++) {
if(obj->styles[i].is_trans && obj->styles[i].selector == tr->selector) {
_lv_ll_remove(&LV_GC_ROOT(_lv_obj_style_trans_ll), tr);
lv_mem_free(tr);
_lv_obj_style_t * obj_style = &obj->styles[i];
lv_style_remove_prop(obj_style->style, prop);
if(lv_style_is_empty(obj->styles[i].style)) {
lv_obj_remove_style(obj, obj_style->style, obj_style->selector);
}
break;
}
}
}
}
static void fade_anim_cb(void * obj, int32_t v)
{
lv_obj_set_style_opa(obj, v, 0);
}
static void fade_in_anim_ready(lv_anim_t * a)
{
lv_obj_remove_local_style_prop(a->var, LV_STYLE_OPA, 0);
}
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