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UI: Skip expensive view button searching when drawing

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Finding the active view item button should only happen when it's actually
necessary, since looping through all buttons and blocks is an expensive
operation. This patch limits the search a bit more, to left clicks (the only
case that is actually handled).

This improves drawing performance in the node editor slightly,
where this was a bottleneck.

Differential Revision: https://developer.blender.org/D16882
This commit is contained in:
Hans Goudey
2023-01-03 17:28:00 -05:00
parent 858fffc2df
commit 8b1edff6b5
2 changed files with 9 additions and 7 deletions
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15
source/blender/editors/interface/interface_handlers.cc
View File

@@ -9684,11 +9684,15 @@ static int ui_handle_view_items_hover(const wmEvent *event, const ARegion *regio
static int ui_handle_view_item_event(bContext *C,
const wmEvent *event,
ARegion *region,
uiBut *view_but)
uiBut *active_but,
ARegion *region)
{
BLI_assert(view_but->type == UI_BTYPE_VIEW_ITEM);
if (event->type == LEFTMOUSE) {
/* Only bother finding the active view item button if the active button isn't already a view
* item. */
uiBut *view_but = active_but->type == UI_BTYPE_VIEW_ITEM ?
active_but :
ui_view_item_find_mouse_over(region, event->xy);
/* Will free active button if there already is one. */
ui_handle_button_activate(C, region, view_but, BUTTON_ACTIVATE_OVER);
return ui_do_button(C, view_but->block, view_but, event);
@@ -11302,10 +11306,7 @@ static int ui_region_handler(bContext *C, const wmEvent *event, void * /*userdat
* nested in the item (it's an overlapping layout). */
ui_handle_view_items_hover(event, region);
if (retval == WM_UI_HANDLER_CONTINUE) {
uiBut *view_item = ui_view_item_find_mouse_over(region, event->xy);
if (view_item) {
retval = ui_handle_view_item_event(C, event, region, view_item);
}
retval = ui_handle_view_item_event(C, event, but, region);
}
/* delayed apply callbacks */