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significantly reduce cpu usage with many aliases. Closes #123

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Felix Kratz 2021-12-12 16:43:57 +01:00
parent 13c3655da4
commit 80c4a964a7
2 changed files with 26 additions and 5 deletions
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28
src/alias.c
View file

@ -139,11 +139,33 @@ bool alias_update_image(struct alias* alias) {
SLSCaptureWindowsContentsToRectWithOptions(g_connection, &alias->wid, true, CGRectNull, 1 << 8, &tmp_ref);
if (!tmp_ref) { alias->wid = 0; return false; }
bool needs_redraw = true;
if (alias->image_ref) {
CFDataRef new_data_ref = CGDataProviderCopyData(CGImageGetDataProvider(tmp_ref));
CFDataRef old_data_ref = CGDataProviderCopyData(CGImageGetDataProvider(alias->image_ref));
uint32_t old_len = CFDataGetLength(old_data_ref);
uint32_t new_len = CFDataGetLength(new_data_ref);
if (old_len == new_len) {
const unsigned char* old_data = CFDataGetBytePtr(old_data_ref);
const unsigned char* new_data = CFDataGetBytePtr(new_data_ref);
needs_redraw = false;
for (int i = 0; i < old_len; i++) {
if (old_data[i] != new_data[i]) {
needs_redraw = true;
break;
}
}
}
CFRelease(new_data_ref);
CFRelease(old_data_ref);
}
CGImageRelease(alias->image_ref);
alias->image_ref = tmp_ref;
if (needs_redraw) {
CGImageRelease(alias->image_ref);
alias->image_ref = tmp_ref;
}
return true;
return needs_redraw;
}
void alias_draw(struct alias* alias, CGContextRef context) {

3
src/bar_item.c
View file

@ -162,8 +162,7 @@ bool bar_item_update(struct bar_item* bar_item, char* sender, bool forced, struc
}
// Alias Update
if (bar_item->has_alias) {
alias_update_image(&bar_item->alias);
if (bar_item->has_alias && alias_update_image(&bar_item->alias)) {
bar_item_needs_update(bar_item);
return true;
}