UI: Add shortcuts for modifier panels

The shortcuts act on the modifier with its panel under the mouse.
The following shortcuts are enabled by default:
  - Remove modifier: X, Delete
  - Apply modifier: Ctrl A
  - Duplicate modifier: Shift D
More shortcuts can be added in the keymap.

Each panel can now store a custom data RNA pointer, and a new
function is added to get the custom data for the panel under the
cursor. This custom data could be used to refactor the "List Panel
System" to generalize it and integrate it further with RNA.

The same functionality will be added  in further commits where it
applies to constraints, grease pencil modifiers, and effects.

Differential Revision: https://developer.blender.org/D8031

1 files changed, 6 insertions, 1 deletions

diff --git a/source/blender/editors/include/UI_interface.h b/source/blender/editors/include/UI_interface.h
index bcbee51246e..1cedd4e122f 100644
--- a/source/blender/editors/include/UI_interface.h
+++ b/source/blender/editors/include/UI_interface.h
@@ -1706,12 +1706,17 @@ void UI_panel_category_draw_all(struct ARegion *region, const char *category_id_
 
 struct PanelType *UI_paneltype_find(int space_id, int region_id, const char *idname);
 
+struct PointerRNA *UI_region_panel_custom_data_under_cursor(const struct bContext *C,
+                                                            const struct wmEvent *event);
+void UI_panel_custom_data_set(struct Panel *panel, struct PointerRNA *custom_data);
+
 /* Polyinstantiated panels for representing a list of data. */
 struct Panel *UI_panel_add_instanced(struct ScrArea *area,
                                      struct ARegion *region,
                                      struct ListBase *panels,
                                      char *panel_idname,
-                                     int list_index);
+                                     int list_index,
+                                     struct PointerRNA *custom_data);
 void UI_panels_free_instanced(struct bContext *C, struct ARegion *region);
 
 #define LIST_PANEL_UNIQUE_STR_LEN 4