UI: Use instanced panel custom data instead of list index

For modifier shortcuts we added a "custom_data" field to panels.
This commit uses the same system for accessing the list data that
corresponds to each panel. This way the context is only used once
and the modifier for each panel can be accessed more easily later.

This ends up being mostly a cleanup commit with a few small changes
in interface_panel.c. The large changes in the UI functions are due
to the fact that the panel custom data is now passed around as a
single pointer instead of being created again for every panel.

The list_index variable in Panel.runtime is removed as it's now
unnecessary.

Differential Revision: https://developer.blender.org/D8559

1 files changed, 9 insertions, 10 deletions

diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilthick.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilthick.c
index 68547614776..20162a2bef2 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencilthick.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilthick.c
@@ -177,30 +177,29 @@ static void foreachIDLink(GpencilModifierData *md, Object *ob, IDWalkFunc walk,
   walk(userData, ob, (ID **)&mmd->material, IDWALK_CB_USER);
 }
 
-static void panel_draw(const bContext *C, Panel *panel)
+static void panel_draw(const bContext *UNUSED(C), Panel *panel)
 {
   uiLayout *layout = panel->layout;
 
-  PointerRNA ptr;
-  gpencil_modifier_panel_get_property_pointers(C, panel, NULL, &ptr);
+  PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, NULL);
 
   uiLayoutSetPropSep(layout, true);
 
-  uiItemR(layout, &ptr, "normalize_thickness", 0, NULL, ICON_NONE);
+  uiItemR(layout, ptr, "normalize_thickness", 0, NULL, ICON_NONE);
 
-  if (RNA_boolean_get(&ptr, "normalize_thickness")) {
-    uiItemR(layout, &ptr, "thickness", 0, NULL, ICON_NONE);
+  if (RNA_boolean_get(ptr, "normalize_thickness")) {
+    uiItemR(layout, ptr, "thickness", 0, NULL, ICON_NONE);
   }
   else {
-    uiItemR(layout, &ptr, "thickness_factor", 0, NULL, ICON_NONE);
+    uiItemR(layout, ptr, "thickness_factor", 0, NULL, ICON_NONE);
   }
 
-  gpencil_modifier_panel_end(layout, &ptr);
+  gpencil_modifier_panel_end(layout, ptr);
 }
 
-static void mask_panel_draw(const bContext *C, Panel *panel)
+static void mask_panel_draw(const bContext *UNUSED(C), Panel *panel)
 {
-  gpencil_modifier_masking_panel_draw(C, panel, true, true);
+  gpencil_modifier_masking_panel_draw(panel, true, true);
 }
 
 static void panelRegister(ARegionType *region_type)