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a9e50ae822a5a69c6620860ec76bccab93363f17
lvgl/src/lv_core/lv_refr.c
Gabor Kiss-Vamosi a9e50ae822 remove debug expressions
2021-03-16 15:43:03 +01:00

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/**
* @file lv_refr.c
*
*/
/*********************
* INCLUDES
*********************/
#include <stddef.h>
#include "lv_refr.h"
#include "lv_disp.h"
#include "../lv_hal/lv_hal_tick.h"
#include "../lv_hal/lv_hal_disp.h"
#include "../lv_misc/lv_timer.h"
#include "../lv_misc/lv_mem.h"
#include "../lv_misc/lv_math.h"
#include "../lv_misc/lv_gc.h"
#include "../lv_draw/lv_draw.h"
#include "../lv_font/lv_font_fmt_txt.h"
#include "../lv_gpu/lv_gpu_stm32_dma2d.h"
#if LV_USE_PERF_MONITOR || LV_USE_MEM_MONITOR
#include "../lv_widgets/lv_label.h"
#endif
/*********************
* DEFINES
*********************/
/* Draw translucent random colored areas on the invalidated (redrawn) areas*/
#define MASK_AREA_DEBUG 0
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_refr_join_area(void);
static void lv_refr_areas(void);
static void lv_refr_area(const lv_area_t * area_p);
static void lv_refr_area_part(const lv_area_t * area_p);
static lv_obj_t * lv_refr_get_top_obj(const lv_area_t * area_p, lv_obj_t * obj);
static void lv_refr_obj_and_children(lv_obj_t * top_p, const lv_area_t * mask_p);
static void lv_refr_obj(lv_obj_t * obj, const lv_area_t * mask_ori_p);
static void draw_buf_flush(void);
static lv_draw_res_t call_draw_cb(lv_obj_t * obj, const lv_area_t * clip_area, lv_draw_mode_t mode);
static void call_flush_cb(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_p);
/**********************
* STATIC VARIABLES
**********************/
static uint32_t px_num;
static lv_disp_t * disp_refr; /*Display being refreshed*/
#if LV_USE_PERF_MONITOR
static uint32_t fps_sum_cnt;
static uint32_t fps_sum_all;
#endif
/**********************
* MACROS
**********************/
#if LV_LOG_TRACE_DISP_REFR
# define TRACE_REFR(...) LV_LOG_TRACE( __VA_ARGS__)
#else
# define TRACE_REFR(...)
#endif
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize the screen refresh subsystem
*/
void _lv_refr_init(void)
{
/*Nothing to do*/
}
/**
* Redraw the invalidated areas now.
* Normally the redrawing is periodically executed in `lv_timer_handler` but a long blocking process
* can prevent the call of `lv_timer_handler`. In this case if the GUI is updated in the process
* (e.g. progress bar) this function can be called when the screen should be updated.
* @param disp pointer to display to refresh. NULL to refresh all displays.
*/
void lv_refr_now(lv_disp_t * disp)
{
lv_anim_refr_now();
if(disp) {
_lv_disp_refr_timer(disp->refr_timer);
}
else {
lv_disp_t * d;
d = lv_disp_get_next(NULL);
while(d) {
_lv_disp_refr_timer(d->refr_timer);
d = lv_disp_get_next(d);
}
}
}
/**
* Invalidate an area on display to redraw it
* @param area_p pointer to area which should be invalidated (NULL: delete the invalidated areas)
* @param disp pointer to display where the area should be invalidated (NULL can be used if there is
* only one display)
*/
void _lv_inv_area(lv_disp_t * disp, const lv_area_t * area_p)
{
if(!disp) disp = lv_disp_get_default();
if(!disp) return;
/*Clear the invalidate buffer if the parameter is NULL*/
if(area_p == NULL) {
disp->inv_p = 0;
return;
}
lv_area_t scr_area;
scr_area.x1 = 0;
scr_area.y1 = 0;
scr_area.x2 = lv_disp_get_hor_res(disp) - 1;
scr_area.y2 = lv_disp_get_ver_res(disp) - 1;
lv_area_t com_area;
bool suc;
suc = _lv_area_intersect(&com_area, area_p, &scr_area);
if(suc == false) return; /*Out of the screen*/
/*If there were at least 1 invalid area in true double buffered mode, redraw the whole screen*/
if(lv_disp_is_true_double_buf(disp)) {
disp->inv_areas[0] = scr_area;
disp->inv_p = 1;
lv_timer_pause(disp->refr_timer, false);
return;
}
if(disp->driver->rounder_cb) disp->driver->rounder_cb(disp->driver, &com_area);
/*Save only if this area is not in one of the saved areas*/
uint16_t i;
for(i = 0; i < disp->inv_p; i++) {
if(_lv_area_is_in(&com_area, &disp->inv_areas[i], 0) != false) return;
}
/*Save the area*/
if(disp->inv_p < LV_INV_BUF_SIZE) {
lv_area_copy(&disp->inv_areas[disp->inv_p], &com_area);
}
else { /*If no place for the area add the screen*/
disp->inv_p = 0;
lv_area_copy(&disp->inv_areas[disp->inv_p], &scr_area);
}
disp->inv_p++;
lv_timer_pause(disp->refr_timer, false);
}
/**
* Get the display which is being refreshed
* @return the display being refreshed
*/
lv_disp_t * _lv_refr_get_disp_refreshing(void)
{
return disp_refr;
}
/**
* Set the display which is being refreshed.
* It shouldn't be used directly by the user.
* It can be used to trick the drawing functions about there is an active display.
* @param the display being refreshed
*/
void _lv_refr_set_disp_refreshing(lv_disp_t * disp)
{
disp_refr = disp;
}
/**
* Called periodically to handle the refreshing
* @param tmr pointer to the timer itself
*/
void _lv_disp_refr_timer(lv_timer_t * tmr)
{
TRACE_REFR("begin");
uint32_t start = lv_tick_get();
uint32_t elaps = 0;
disp_refr = tmr->user_data;
#if LV_USE_PERF_MONITOR == 0
/* Ensure the timer does not run again automatically.
* This is done before refreshing in case refreshing invalidates something else.
*/
lv_timer_pause(tmr, true);
#endif
/*Refresh the screen's layout if required*/
uint32_t i;
for(i = 0; i < disp_refr->screen_cnt; i++) {
lv_obj_update_layout(disp_refr->screens[i]);
}
lv_obj_update_layout(disp_refr->top_layer);
lv_obj_update_layout(disp_refr->sys_layer);
/*Do nothing if there is no active screen*/
if(disp_refr->act_scr == NULL) {
disp_refr->inv_p = 0;
LV_LOG_WARN("there is no active screen");
TRACE_REFR("finished");
return;
}
lv_refr_join_area();
lv_refr_areas();
/*If refresh happened ...*/
if(disp_refr->inv_p != 0) {
if(lv_disp_is_true_double_buf(disp_refr)) {
draw_buf_flush();
}
/*Clean up*/
lv_memset_00(disp_refr->inv_areas, sizeof(disp_refr->inv_areas));
lv_memset_00(disp_refr->inv_area_joined, sizeof(disp_refr->inv_area_joined));
disp_refr->inv_p = 0;
elaps = lv_tick_elaps(start);
/*Call monitor cb if present*/
if(disp_refr->driver->monitor_cb) {
disp_refr->driver->monitor_cb(disp_refr->driver, elaps, px_num);
}
}
lv_mem_buf_free_all();
_lv_font_clean_up_fmt_txt();
#if LV_USE_PERF_MONITOR && LV_USE_LABEL
static lv_obj_t * perf_label = NULL;
if(perf_label == NULL) {
perf_label = lv_label_create(lv_layer_sys(), NULL);
lv_obj_set_style_bg_opa(perf_label, LV_PART_MAIN, LV_STATE_DEFAULT, LV_OPA_50);
lv_obj_set_style_bg_color(perf_label, LV_PART_MAIN, LV_STATE_DEFAULT, lv_color_black());
lv_obj_set_style_text_color(perf_label, LV_PART_MAIN, LV_STATE_DEFAULT, lv_color_white());
lv_obj_set_style_pad_top(perf_label, LV_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_obj_set_style_pad_bottom(perf_label, LV_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_obj_set_style_pad_left(perf_label, LV_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_obj_set_style_pad_right(perf_label, LV_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_obj_set_style_text_align(perf_label, LV_PART_MAIN, LV_STATE_DEFAULT, LV_TEXT_ALIGN_RIGHT);
lv_label_set_text(perf_label, "?");
lv_obj_align(perf_label, NULL, LV_ALIGN_IN_BOTTOM_RIGHT, 0, 0);
}
static uint32_t perf_last_time = 0;
static uint32_t elaps_sum = 0;
static uint32_t frame_cnt = 0;
if(lv_tick_elaps(perf_last_time) < 300) {
if(px_num > 5000) {
elaps_sum += elaps;
frame_cnt ++;
}
}
else {
perf_last_time = lv_tick_get();
uint32_t fps_limit = 1000 / disp_refr->refr_timer->period;
uint32_t fps;
if(elaps_sum == 0) elaps_sum = 1;
if(frame_cnt == 0) fps = fps_limit;
else fps = (1000 * frame_cnt) / elaps_sum;
elaps_sum = 0;
frame_cnt = 0;
if(fps > fps_limit) fps = fps_limit;
fps_sum_all += fps;
fps_sum_cnt ++;
uint32_t cpu = 100 - lv_timer_get_idle();
lv_label_set_text_fmt(perf_label, "%d FPS\n%d%% CPU", fps, cpu);
lv_obj_align(perf_label, NULL, LV_ALIGN_IN_BOTTOM_RIGHT, 0, 0);
}
#endif
#if LV_USE_MEM_MONITOR && LV_MEM_CUSTOM == 0 && LV_USE_LABEL
static lv_obj_t * mem_label = NULL;
if(mem_label == NULL) {
mem_label = lv_label_create(lv_layer_sys(), NULL);
lv_obj_set_style_bg_opa(mem_label, LV_PART_MAIN, LV_STATE_DEFAULT, LV_OPA_50);
lv_obj_set_style_bg_color(mem_label, LV_PART_MAIN, LV_STATE_DEFAULT, lv_color_black());
lv_obj_set_style_text_color(mem_label, LV_PART_MAIN, LV_STATE_DEFAULT, lv_color_white());
lv_obj_set_style_pad_top(mem_label, LV_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_obj_set_style_pad_bottom(mem_label, LV_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_obj_set_style_pad_left(mem_label, LV_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_obj_set_style_pad_right(mem_label, LV_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_label_set_text(mem_label, "?");
lv_obj_align(mem_label, NULL, LV_ALIGN_IN_BOTTOM_LEFT, 0, 0);
}
static uint32_t mem_last_time = 0;
if(lv_tick_elaps(mem_last_time) > 300) {
mem_last_time = lv_tick_get();
lv_mem_monitor_t mon;
lv_mem_monitor(&mon);
uint32_t used_size = mon.total_size - mon.free_size;;
uint32_t used_kb = used_size / 1024;
uint32_t used_kb_tenth = (used_size - (used_kb * 1024)) / 102;
lv_label_set_text_fmt(mem_label, "%d.%d kB used (%d %%)\n%d%% frag.", used_kb, used_kb_tenth, mon.used_pct, mon.frag_pct);
lv_obj_align(mem_label, NULL, LV_ALIGN_IN_BOTTOM_LEFT, 0, 0);
}
#endif
TRACE_REFR("finished");
}
#if LV_USE_PERF_MONITOR
uint32_t lv_refr_get_fps_avg(void)
{
return fps_sum_all / fps_sum_cnt;
}
#endif
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Join the areas which has got common parts
*/
static void lv_refr_join_area(void)
{
uint32_t join_from;
uint32_t join_in;
lv_area_t joined_area;
for(join_in = 0; join_in < disp_refr->inv_p; join_in++) {
if(disp_refr->inv_area_joined[join_in] != 0) continue;
/*Check all areas to join them in 'join_in'*/
for(join_from = 0; join_from < disp_refr->inv_p; join_from++) {
/*Handle only unjoined areas and ignore itself*/
if(disp_refr->inv_area_joined[join_from] != 0 || join_in == join_from) {
continue;
}
/*Check if the areas are on each other*/
if(_lv_area_is_on(&disp_refr->inv_areas[join_in], &disp_refr->inv_areas[join_from]) == false) {
continue;
}
_lv_area_join(&joined_area, &disp_refr->inv_areas[join_in], &disp_refr->inv_areas[join_from]);
/*Join two area only if the joined area size is smaller*/
if(lv_area_get_size(&joined_area) < (lv_area_get_size(&disp_refr->inv_areas[join_in]) +
lv_area_get_size(&disp_refr->inv_areas[join_from]))) {
lv_area_copy(&disp_refr->inv_areas[join_in], &joined_area);
/*Mark 'join_form' is joined into 'join_in'*/
disp_refr->inv_area_joined[join_from] = 1;
}
}
}
}
/**
* Refresh the joined areas
*/
static void lv_refr_areas(void)
{
px_num = 0;
if(disp_refr->inv_p == 0) return;
/*Find the last area which will be drawn*/
int32_t i;
int32_t last_i = 0;
for(i = disp_refr->inv_p - 1; i >= 0; i--) {
if(disp_refr->inv_area_joined[i] == 0) {
last_i = i;
break;
}
}
disp_refr->driver->draw_buf->last_area = 0;
disp_refr->driver->draw_buf->last_part = 0;
for(i = 0; i < disp_refr->inv_p; i++) {
/*Refresh the unjoined areas*/
if(disp_refr->inv_area_joined[i] == 0) {
if(i == last_i) disp_refr->driver->draw_buf->last_area = 1;
disp_refr->driver->draw_buf->last_part = 0;
lv_refr_area(&disp_refr->inv_areas[i]);
px_num += lv_area_get_size(&disp_refr->inv_areas[i]);
}
}
}
/**
* Refresh an area if there is Virtual Display Buffer
* @param area_p pointer to an area to refresh
*/
static void lv_refr_area(const lv_area_t * area_p)
{
/*True double buffering: there are two screen sized buffers. Just redraw directly into a
* buffer*/
if(lv_disp_is_true_double_buf(disp_refr)) {
lv_disp_draw_buf_t * draw_buf = lv_disp_get_draw_buf(disp_refr);
draw_buf->area.x1 = 0;
draw_buf->area.x2 = lv_disp_get_hor_res(disp_refr) - 1;
draw_buf->area.y1 = 0;
draw_buf->area.y2 = lv_disp_get_ver_res(disp_refr) - 1;
disp_refr->driver->draw_buf->last_part = 1;
lv_refr_area_part(area_p);
}
/*The buffer is smaller: refresh the area in parts*/
else {
lv_disp_draw_buf_t * draw_buf = lv_disp_get_draw_buf(disp_refr);
/*Calculate the max row num*/
lv_coord_t w = lv_area_get_width(area_p);
lv_coord_t h = lv_area_get_height(area_p);
lv_coord_t y2 =
area_p->y2 >= lv_disp_get_ver_res(disp_refr) ? lv_disp_get_ver_res(disp_refr) - 1 : area_p->y2;
int32_t max_row = (uint32_t)draw_buf->size / w;
if(max_row > h) max_row = h;
/*Round down the lines of draw_buf if rounding is added*/
if(disp_refr->driver->rounder_cb) {
lv_area_t tmp;
tmp.x1 = 0;
tmp.x2 = 0;
tmp.y1 = 0;
lv_coord_t h_tmp = max_row;
do {
tmp.y2 = h_tmp - 1;
disp_refr->driver->rounder_cb(disp_refr->driver, &tmp);
/*If this height fits into `max_row` then fine*/
if(lv_area_get_height(&tmp) <= max_row) break;
/*Decrement the height of the area until it fits into `max_row` after rounding*/
h_tmp--;
} while(h_tmp > 0);
if(h_tmp <= 0) {
LV_LOG_WARN("Can't set draw_buf height using the round function. (Wrong round_cb or to "
"small draw_buf)");
return;
}
else {
max_row = tmp.y2 + 1;
}
}
/*Always use the full row*/
lv_coord_t row;
lv_coord_t row_last = 0;
for(row = area_p->y1; row + max_row - 1 <= y2; row += max_row) {
/*Calc. the next y coordinates of draw_buf*/
draw_buf->area.x1 = area_p->x1;
draw_buf->area.x2 = area_p->x2;
draw_buf->area.y1 = row;
draw_buf->area.y2 = row + max_row - 1;
if(draw_buf->area.y2 > y2) draw_buf->area.y2 = y2;
row_last = draw_buf->area.y2;
if(y2 == row_last) disp_refr->driver->draw_buf->last_part = 1;
lv_refr_area_part(area_p);
}
/*If the last y coordinates are not handled yet ...*/
if(y2 != row_last) {
/*Calc. the next y coordinates of draw_buf*/
draw_buf->area.x1 = area_p->x1;
draw_buf->area.x2 = area_p->x2;
draw_buf->area.y1 = row;
draw_buf->area.y2 = y2;
disp_refr->driver->draw_buf->last_part = 1;
lv_refr_area_part(area_p);
}
}
}
/**
* Refresh a part of an area which is on the actual Virtual Display Buffer
* @param area_p pointer to an area to refresh
*/
static void lv_refr_area_part(const lv_area_t * area_p)
{
lv_disp_draw_buf_t * draw_buf = lv_disp_get_draw_buf(disp_refr);
while(draw_buf->flushing) {
if(disp_refr->driver->wait_cb) disp_refr->driver->wait_cb(disp_refr->driver);
}
lv_obj_t * top_act_scr = NULL;
lv_obj_t * top_prev_scr = NULL;
/*Get the new mask from the original area and the act. draw_buf
It will be a part of 'area_p'*/
lv_area_t start_mask;
_lv_area_intersect(&start_mask, area_p, &draw_buf->area);
/*Get the most top object which is not covered by others*/
top_act_scr = lv_refr_get_top_obj(&start_mask, lv_disp_get_scr_act(disp_refr));
if(disp_refr->prev_scr) {
top_prev_scr = lv_refr_get_top_obj(&start_mask, disp_refr->prev_scr);
}
/*Draw a display background if there is no top object*/
if(top_act_scr == NULL && top_prev_scr == NULL) {
if(disp_refr->bg_img) {
lv_draw_img_dsc_t dsc;
lv_draw_img_dsc_init(&dsc);
dsc.opa = disp_refr->bg_opa;
lv_img_header_t header;
lv_res_t res;
res = lv_img_decoder_get_info(disp_refr->bg_img, &header);
if(res == LV_RES_OK) {
lv_area_t a;
lv_area_set(&a, 0, 0, header.w - 1, header.h - 1);
lv_draw_img(&a, &start_mask, disp_refr->bg_img, &dsc);
}
else {
LV_LOG_WARN("Can't draw the background image")
}
}
else {
lv_draw_rect_dsc_t dsc;
lv_draw_rect_dsc_init(&dsc);
dsc.bg_color = disp_refr->bg_color;
dsc.bg_opa = disp_refr->bg_opa;
lv_draw_rect(&start_mask, &start_mask, &dsc);
}
}
/*Refresh the previous screen if any*/
if(disp_refr->prev_scr) {
/*Get the most top object which is not covered by others*/
if(top_prev_scr == NULL) {
top_prev_scr = disp_refr->prev_scr;
}
/*Do the refreshing from the top object*/
lv_refr_obj_and_children(top_prev_scr, &start_mask);
}
if(top_act_scr == NULL) {
top_act_scr = disp_refr->act_scr;
}
/*Do the refreshing from the top object*/
lv_refr_obj_and_children(top_act_scr, &start_mask);
/*Also refresh top and sys layer unconditionally*/
lv_refr_obj_and_children(lv_disp_get_layer_top(disp_refr), &start_mask);
lv_refr_obj_and_children(lv_disp_get_layer_sys(disp_refr), &start_mask);
/* In true double buffered mode flush only once when all areas were rendered.
* In normal mode flush after every area */
if(lv_disp_is_true_double_buf(disp_refr) == false) {
draw_buf_flush();
}
}
/**
* Search the most top object which fully covers an area
* @param area_p pointer to an area
* @param obj the first object to start the searching (typically a screen)
* @return
*/
static lv_obj_t * lv_refr_get_top_obj(const lv_area_t * area_p, lv_obj_t * obj)
{
lv_obj_t * found_p = NULL;
/*If this object is fully cover the draw area check the children too */
if(_lv_area_is_in(area_p, &obj->coords, 0) && lv_obj_has_flag(obj, LV_OBJ_FLAG_HIDDEN) == false) {
lv_draw_res_t draw_res = call_draw_cb(obj, area_p, LV_DRAW_MODE_COVER_CHECK);
if(draw_res == LV_DRAW_RES_MASKED) return NULL;
lv_draw_res_t event_draw_res = LV_DRAW_RES_OK;
lv_event_send(obj, LV_EVENT_COVER_CHECK, &event_draw_res);
if(event_draw_res == LV_DRAW_RES_MASKED) return NULL;
if(event_draw_res == LV_DRAW_RES_NOT_COVER) draw_res = LV_DRAW_RES_NOT_COVER;
if(draw_res == LV_DRAW_RES_COVER && lv_obj_get_style_opa(obj, LV_PART_MAIN) != LV_OPA_COVER) {
draw_res = LV_DRAW_RES_NOT_COVER;
}
uint32_t i;
for(i = 0; i < lv_obj_get_child_cnt(obj); i++) {
lv_obj_t * child = lv_obj_get_child(obj, i);
found_p = lv_refr_get_top_obj(area_p, child);
/*If a children is ok then break*/
if(found_p != NULL) {
break;
}
}
/*If no better children use this object*/
if(found_p == NULL) {
if(draw_res == LV_DRAW_RES_COVER) {
found_p = obj;
}
}
}
return found_p;
}
/**
* Make the refreshing from an object. Draw all its children and the youngers too.
* @param top_p pointer to an objects. Start the drawing from it.
* @param mask_p pointer to an area, the objects will be drawn only here
*/
static void lv_refr_obj_and_children(lv_obj_t * top_p, const lv_area_t * mask_p)
{
/* Normally always will be a top_obj (at least the screen)
* but in special cases (e.g. if the screen has alpha) it won't.
* In this case use the screen directly */
if(top_p == NULL) top_p = lv_disp_get_scr_act(disp_refr);
if(top_p == NULL) return; /*Shouldn't happen*/
/*Refresh the top object and its children*/
lv_refr_obj(top_p, mask_p);
/*Draw the 'younger' sibling objects because they can be on top_obj */
lv_obj_t * par;
lv_obj_t * border_p = top_p;
par = lv_obj_get_parent(top_p);
/*Do until not reach the screen*/
while(par != NULL) {
bool go = false;
uint32_t i;
for(i = 0; i < lv_obj_get_child_cnt(par); i++) {
lv_obj_t * child = lv_obj_get_child(par, i);
if(!go) {
if(child == border_p) go = true;
} else {
/*Refresh the objects*/
lv_refr_obj(child, mask_p);
}
}
/*Call the post draw draw function of the parents of the to object*/
lv_event_send(par, LV_EVENT_DRAW_POST_BEGIN, (void*)mask_p);
call_draw_cb(par, mask_p, LV_DRAW_MODE_POST_DRAW);
lv_event_send(par, LV_EVENT_DRAW_POST_END, (void*)mask_p);
/*The new border will be the last parents,
*so the 'younger' brothers of parent will be refreshed*/
border_p = par;
/*Go a level deeper*/
par = lv_obj_get_parent(par);
}
}
/**
* Refresh an object an all of its children. (Called recursively)
* @param obj pointer to an object to refresh
* @param mask_ori_p pointer to an area, the objects will be drawn only here
*/
static void lv_refr_obj(lv_obj_t * obj, const lv_area_t * mask_ori_p)
{
/*Do not refresh hidden objects*/
if(lv_obj_has_flag(obj, LV_OBJ_FLAG_HIDDEN)) return;
bool union_ok; /* Store the return value of area_union */
/* Truncate the original mask to the coordinates of the parent
* because the parent and its children are visible only here */
lv_area_t obj_mask;
lv_area_t obj_ext_mask;
lv_area_t obj_area;
lv_coord_t ext_size = _lv_obj_get_ext_draw_size(obj);
lv_obj_get_coords(obj, &obj_area);
obj_area.x1 -= ext_size;
obj_area.y1 -= ext_size;
obj_area.x2 += ext_size;
obj_area.y2 += ext_size;
union_ok = _lv_area_intersect(&obj_ext_mask, mask_ori_p, &obj_area);
/*Draw the parent and its children only if they ore on 'mask_parent'*/
if(union_ok != false) {
/* Redraw the object */
lv_event_send(obj, LV_EVENT_DRAW_MAIN_BEGIN, &obj_ext_mask);
call_draw_cb(obj, &obj_ext_mask, LV_DRAW_MODE_MAIN_DRAW);
lv_event_send(obj, LV_EVENT_DRAW_MAIN_END, &obj_ext_mask);
#if MASK_AREA_DEBUG
lv_color_t debug_color = lv_color_make(lv_rand(0, 0xFF), lv_rand(0, 0xFF), lv_rand(0, 0xFF));
lv_draw_rect_dsc_t draw_dsc;
lv_draw_rect_dsc_init(&draw_dsc);
draw_dsc.bg_color.full = debug_color.full;
draw_dsc.bg_opa = LV_OPA_20;
draw_dsc.border_width = 1;
draw_dsc.border_opa = LV_OPA_30;
draw_dsc.border_color = debug_color;
lv_draw_rect(&obj_ext_mask, &obj_ext_mask, &draw_dsc);
#endif
/*Create a new 'obj_mask' without 'ext_size' because the children can't be visible there*/
lv_obj_get_coords(obj, &obj_area);
union_ok = _lv_area_intersect(&obj_mask, mask_ori_p, &obj_area);
if(union_ok != false) {
lv_area_t mask_child; /*Mask from obj and its child*/
lv_area_t child_area;
uint32_t i;
for(i = 0; i < lv_obj_get_child_cnt(obj); i++) {
lv_obj_t * child = lv_obj_get_child(obj, i);
lv_obj_get_coords(child, &child_area);
ext_size = _lv_obj_get_ext_draw_size(child);
child_area.x1 -= ext_size;
child_area.y1 -= ext_size;
child_area.x2 += ext_size;
child_area.y2 += ext_size;
/* Get the union (common parts) of original mask (from obj)
* and its child */
union_ok = _lv_area_intersect(&mask_child, &obj_mask, &child_area);
/*If the parent and the child has common area then refresh the child */
if(union_ok) {
/*Refresh the next children*/
lv_refr_obj(child, &mask_child);
}
}
}
/* If all the children are redrawn make 'post draw' draw */
lv_event_send(obj, LV_EVENT_DRAW_POST_BEGIN, &obj_ext_mask);
call_draw_cb(obj, &obj_ext_mask, LV_DRAW_MODE_POST_DRAW);
lv_event_send(obj, LV_EVENT_DRAW_POST_END, &obj_ext_mask);
}
}
static void draw_buf_rotate_180(lv_disp_drv_t *drv, lv_area_t *area, lv_color_t *color_p) {
lv_coord_t area_w = lv_area_get_width(area);
lv_coord_t area_h = lv_area_get_height(area);
uint32_t total = area_w * area_h;
/* Swap the beginning and end values */
lv_color_t tmp;
uint32_t i = total - 1, j = 0;
while(i > j) {
tmp = color_p[i];
color_p[i] = color_p[j];
color_p[j] = tmp;
i--;
j++;
}
lv_coord_t tmp_coord;
tmp_coord = area->y2;
area->y2 = drv->ver_res - area->y1 - 1;
area->y1 = drv->ver_res - tmp_coord - 1;
tmp_coord = area->x2;
area->x2 = drv->hor_res - area->x1 - 1;
area->x1 = drv->hor_res - tmp_coord - 1;
}
static LV_ATTRIBUTE_FAST_MEM void draw_buf_rotate_90(bool invert_i, lv_coord_t area_w, lv_coord_t area_h, lv_color_t *orig_color_p, lv_color_t *rot_buf) {
uint32_t invert = (area_w * area_h) - 1;
uint32_t initial_i = ((area_w - 1) * area_h);
for(lv_coord_t y = 0; y < area_h; y++) {
uint32_t i = initial_i + y;
if(invert_i)
i = invert - i;
for(lv_coord_t x = 0; x < area_w; x++) {
rot_buf[i] = *(orig_color_p++);
if(invert_i)
i += area_h;
else
i -= area_h;
}
}
}
/**
* Helper function for draw_buf_rotate_90_sqr. Given a list of four numbers, rotate the entire list to the left.
*/
static inline void draw_buf_rotate4(lv_color_t *a, lv_color_t *b, lv_color_t * c, lv_color_t * d) {
lv_color_t tmp;
tmp = *a;
*a = *b;
*b = *c;
*c = *d;
*d = tmp;
}
/**
* Rotate a square image 90/270 degrees in place.
* @note inspired by https://stackoverflow.com/a/43694906
*/
static void draw_buf_rotate_90_sqr(bool is_270, lv_coord_t w, lv_color_t * color_p) {
for(lv_coord_t i = 0; i < w/2; i++) {
for(lv_coord_t j = 0; j < (w + 1)/2; j++) {
lv_coord_t inv_i = (w - 1) - i;
lv_coord_t inv_j = (w - 1) - j;
if(is_270) {
draw_buf_rotate4(
&color_p[i * w + j],
&color_p[inv_j * w + i],
&color_p[inv_i * w + inv_j],
&color_p[j * w + inv_i]
);
} else {
draw_buf_rotate4(
&color_p[i * w + j],
&color_p[j * w + inv_i],
&color_p[inv_i * w + inv_j],
&color_p[inv_j * w + i]
);
}
}
}
}
/**
* Rotate the draw_buf to the display's native orientation.
*/
static void draw_buf_rotate(lv_area_t *area, lv_color_t *color_p) {
lv_disp_drv_t * drv = disp_refr->driver;
if(lv_disp_is_true_double_buf(disp_refr) && drv->sw_rotate) {
LV_LOG_ERROR("cannot rotate a true double-buffered display!");
return;
}
if(drv->rotated == LV_DISP_ROT_180) {
draw_buf_rotate_180(drv, area, color_p);
call_flush_cb(drv, area, color_p);
} else if(drv->rotated == LV_DISP_ROT_90 || drv->rotated == LV_DISP_ROT_270) {
/*Allocate a temporary buffer to store rotated image */
lv_color_t * rot_buf = NULL;
lv_disp_draw_buf_t * draw_buf = lv_disp_get_draw_buf(disp_refr);
lv_coord_t area_w = lv_area_get_width(area);
lv_coord_t area_h = lv_area_get_height(area);
/*Determine the maximum number of rows that can be rotated at a time*/
lv_coord_t max_row = LV_MIN((lv_coord_t)((LV_DISP_ROT_MAX_BUF/sizeof(lv_color_t)) / area_w), area_h);
lv_coord_t init_y_off;
init_y_off = area->y1;
if(drv->rotated == LV_DISP_ROT_90) {
area->y2 = drv->ver_res - area->x1 - 1;
area->y1 = area->y2 - area_w + 1;
} else {
area->y1 = area->x1;
area->y2 = area->y1 + area_w - 1;
}
draw_buf->flushing = 0;
/*Rotate the screen in chunks, flushing after each one*/
lv_coord_t row = 0;
while(row < area_h) {
lv_coord_t height = LV_MIN(max_row, area_h-row);
draw_buf->flushing = 1;
if((row == 0) && (area_h >= area_w)) {
/*Rotate the initial area as a square*/
height = area_w;
draw_buf_rotate_90_sqr(drv->rotated == LV_DISP_ROT_270, area_w, color_p);
if(drv->rotated == LV_DISP_ROT_90) {
area->x1 = init_y_off;
area->x2 = init_y_off+area_w-1;
} else {
area->x2 = drv->hor_res - 1 - init_y_off;
area->x1 = area->x2 - area_w + 1;
}
} else {
/*Rotate other areas using a maximum buffer size*/
if(rot_buf == NULL) rot_buf = lv_mem_buf_get(LV_DISP_ROT_MAX_BUF);
draw_buf_rotate_90(drv->rotated == LV_DISP_ROT_270, area_w, height, color_p, rot_buf);
if(drv->rotated == LV_DISP_ROT_90) {
area->x1 = init_y_off+row;
area->x2 = init_y_off+row+height-1;
} else {
area->x2 = drv->hor_res - 1 - init_y_off - row;
area->x1 = area->x2 - height + 1;
}
}
/*Flush the completed area to the display*/
call_flush_cb(drv, area, rot_buf == NULL ? color_p : rot_buf);
/*FIXME: Rotation forces legacy behavior where rendering and flushing are done serially*/
while(draw_buf->flushing) {
if(drv->wait_cb) drv->wait_cb(drv);
}
color_p += area_w * height;
row += height;
}
/*Free the allocated buffer at the end if necessary*/
if(rot_buf != NULL) lv_mem_buf_release(rot_buf);
}
}
/**
* Flush the content of the draw buffer
*/
static void draw_buf_flush(void)
{
lv_disp_draw_buf_t * draw_buf = lv_disp_get_draw_buf(disp_refr);
lv_color_t * color_p = draw_buf->buf_act;
draw_buf->flushing = 1;
if(disp_refr->driver->draw_buf->last_area && disp_refr->driver->draw_buf->last_part) draw_buf->flushing_last = 1;
else draw_buf->flushing_last = 0;
/*Flush the rendered content to the display*/
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
if(disp->driver->gpu_wait_cb) disp->driver->gpu_wait_cb(disp->driver);
if(disp->driver->flush_cb) {
/*Rotate the buffer to the display's native orientation if necessary*/
if(disp->driver->rotated != LV_DISP_ROT_NONE && disp->driver->sw_rotate) {
draw_buf_rotate(&draw_buf->area, draw_buf->buf_act);
} else {
call_flush_cb(disp->driver, &draw_buf->area, color_p);
}
}
if(draw_buf->buf1 && draw_buf->buf2) {
if(draw_buf->buf_act == draw_buf->buf1)
draw_buf->buf_act = draw_buf->buf2;
else
draw_buf->buf_act = draw_buf->buf1;
}
}
static lv_draw_res_t call_draw_cb(lv_obj_t * obj, const lv_area_t * clip_area, lv_draw_mode_t mode)
{
if(obj == NULL) return LV_DRAW_RES_OK;
const lv_obj_class_t * class_p = obj->class_p;
while(class_p && class_p->draw_cb == NULL) class_p = class_p->base_class;
if(class_p == NULL) return LV_DRAW_RES_OK;
lv_draw_res_t res = LV_DRAW_RES_OK;
if(class_p->draw_cb) res = class_p->draw_cb(obj, clip_area, mode);
return res;
}
static void call_flush_cb(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_p)
{
TRACE_REFR("Calling flush_cb on (%d;%d)(%d;%d) area with 0x%p image pointer", area->x1, area->y1, area->x2, area->y2, color_p);
drv->flush_cb(drv, area, color_p);
}
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