macOS: trackpad scroll direction reversed in list views
The 'ui_pan_to_scroll' uses 'WM_event_absolute_delta_y'. For scrolling the List View we need to invert the direction to respect "natural scroll direction" system preferences. Differential Revision: https://developer.blender.org/D10291
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@ -9005,6 +9005,7 @@ static int ui_handle_list_event(bContext *C, const wmEvent *event, ARegion *regi
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{
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int retval = WM_UI_HANDLER_CONTINUE;
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int type = event->type, val = event->val;
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int scroll_dir = 1;
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bool redraw = false;
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uiList *ui_list = listbox->custom_data;
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@ -9021,6 +9022,11 @@ static int ui_handle_list_event(bContext *C, const wmEvent *event, ARegion *regi
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if (type == MOUSEPAN) {
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ui_pan_to_scroll(event, &type, &val);
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/* 'ui_pan_to_scroll' gives the absolute direction. */
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if (event->is_direction_inverted) {
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scroll_dir = -1;
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}
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/* If type still is mouse-pan, we call it handled, since delta-y accumulate. */
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/* also see wm_event_system.c do_wheel_ui hack */
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if (type == MOUSEPAN) {
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@ -9115,7 +9121,7 @@ static int ui_handle_list_event(bContext *C, const wmEvent *event, ARegion *regi
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else if (ELEM(type, WHEELUPMOUSE, WHEELDOWNMOUSE)) {
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if (dyn_data->height > dyn_data->visual_height) {
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/* list template will clamp */
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ui_list->list_scroll += (type == WHEELUPMOUSE) ? -1 : 1;
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ui_list->list_scroll += scroll_dir * ((type == WHEELUPMOUSE) ? -1 : 1);
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redraw = true;
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retval = WM_UI_HANDLER_BREAK;
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