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optimized list view paint

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This commit is contained in:
xianjimli 2020-04-07 08:05:28 +08:00
parent e215dad018
commit 6c5b9aecd0
1 changed files with 13 additions and 0 deletions
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13
src/ext_widgets/scroll_view/list_view.c
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@ -21,6 +21,7 @@
#include "tkc/mem.h" #include "tkc/mem.h"
#include "tkc/utils.h" #include "tkc/utils.h"
#include "tkc/time_now.h"
#include "base/layout.h" #include "base/layout.h"
#include "scroll_view/list_view.h" #include "scroll_view/list_view.h"
#include "scroll_view/scroll_bar.h" #include "scroll_view/scroll_bar.h"
@ -230,6 +231,9 @@ static ret_t list_view_on_scroll_view_paint_children(widget_t* widget, canvas_t*
int32_t top = 0; int32_t top = 0;
int32_t bottom = 0; int32_t bottom = 0;
int32_t right = 0; int32_t right = 0;
int32_t max_w = canvas_get_width(c);
int32_t max_h = canvas_get_height(c);
WIDGET_FOR_EACH_CHILD_BEGIN(widget, iter, i) WIDGET_FOR_EACH_CHILD_BEGIN(widget, iter, i)
if (!iter->visible) { if (!iter->visible) {
@ -242,6 +246,15 @@ static ret_t list_view_on_scroll_view_paint_children(widget_t* widget, canvas_t*
bottom = top + iter->h; bottom = top + iter->h;
right = left + iter->w; right = left + iter->w;
if (top > max_h || left > max_w) {
break;
}
if (bottom < 0 || right < 0) {
iter->dirty = FALSE;
continue;
}
if (left > c->clip_right || right < c->clip_left || top > c->clip_bottom || if (left > c->clip_right || right < c->clip_left || top > c->clip_bottom ||
bottom < c->clip_top) { bottom < c->clip_top) {
iter->dirty = FALSE; iter->dirty = FALSE;