UI

* Fix buttons jumping around when resizing and zoom. Part of this was
  adding a tiny a 0.001f offset in UI_view2d_view_ortho, otherwise the
  rounding is unpredictable (used to be 0.375f, but that was disabled).
* Fix various issues with zooming, panning panels.  V2D_LOCKOFS_X/Y is
  now taken into account in more places in the view2d code, to avoid
  zooming into the center or panning out of the view.
* Remove "Free" align mode in buttons window (it's not really useful).

* View3D/Graph/Image editors now use the same PanelType system as the
  buttons window, means some deprecated panel code could be removed.
* Some small visual tweaks for panels.
* View 2D Reset operator (Home key), to reset zoom and panning for panels.

* Added argument to set number buttons as sliders (slider=True for itemR).
* Ignore labels for button alignment (doesn't look right).
* Fix some use of context.main in py scripts, should get data from active
  object instead.
* Fix autotexspace -> auto_texspace in py script.

1 files changed, 22 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_ui.c b/source/blender/makesrna/intern/rna_ui.c
index 405ae9a0f74..a3e48f629cb 100644
--- a/source/blender/makesrna/intern/rna_ui.c
+++ b/source/blender/makesrna/intern/rna_ui.c
@@ -111,6 +111,22 @@ static void panel_draw(const bContext *C, Panel *pnl)
 	RNA_parameter_list_free(list);
 }
 
+static void panel_draw_header(const bContext *C, Panel *pnl)
+{
+	PointerRNA ptr;
+	ParameterList *list;
+	FunctionRNA *func;
+
+	RNA_pointer_create(&CTX_wm_screen(C)->id, pnl->type->py_srna, pnl, &ptr);
+	func= RNA_struct_find_function(&ptr, "draw_header");
+
+	list= RNA_parameter_list_create(&ptr, func);
+	RNA_parameter_set_lookup(list, "context", &C);
+	pnl->type->py_call(&ptr, func, list);
+
+	RNA_parameter_list_free(list);
+}
+
 static void rna_Panel_unregister(const bContext *C, StructRNA *type)
 {
 	ARegionType *art;
@@ -169,6 +185,7 @@ static StructRNA *rna_Panel_register(const bContext *C, ReportList *reports, voi
 
 	pt->poll= (have_function[0])? panel_poll: NULL;
 	pt->draw= (have_function[1])? panel_draw: NULL;
+	pt->draw_header= (have_function[2])? panel_draw_header: NULL;
 
 	BLI_addtail(&art->paneltypes, pt);
 
@@ -429,6 +446,11 @@ static void rna_def_panel(BlenderRNA *brna)
 	RNA_def_function_flag(func, FUNC_REGISTER);
 	RNA_def_pointer(func, "context", "Context", "", "");
 
+	func= RNA_def_function(srna, "draw_header", NULL);
+	RNA_def_function_ui_description(func, "Draw buttons into the panel header UI layout.");
+	RNA_def_function_flag(func, FUNC_REGISTER);
+	RNA_def_pointer(func, "context", "Context", "", "");
+
 	prop= RNA_def_property(srna, "layout", PROP_POINTER, PROP_NONE);
 	RNA_def_property_struct_type(prop, "UILayout");