Code holiday commit:

- fix: user pref, window title was reset to 'Blender' on tab usage

- Undo history menu back:
  - name "Undo History"
  - hotkey alt+ctrl+z (alt+apple+z for mac)
  - works like 2.4x, only for global undo, editmode and particle edit.

- Menu scroll
  - for small windows or screens, popup menus now allow to display
    all items, using internal scrolling
  - works with a timer, scrolling 10 items per second when mouse 
    is over the top or bottom arrow
  - if menu is too big to display, it now draws to top or bottom, 
    based on largest available space.
  - also works for hotkey driven pop up menus.

- User pref "DPI" follows widget/layout size
  - widgets & headers now become bigger and smaller, to match 
    'dpi' font sizes. Works well to match UI to monitor size.
  - note that icons can get fuzzy, we need better mipmaps for it

1 files changed, 14 insertions, 52 deletions

diff --git a/source/blender/editors/util/editmode_undo.c b/source/blender/editors/util/editmode_undo.c
index 732e5087af2..bcbc134d06d 100644
--- a/source/blender/editors/util/editmode_undo.c
+++ b/source/blender/editors/util/editmode_undo.c
@@ -296,7 +296,7 @@ void undo_editmode_clear(void)
 }
 
 /* based on index nr it does a restore */
-static void undo_number(bContext *C, int nr)
+void undo_editmode_number(bContext *C, int nr)
 {
 	UndoElem *uel;
 	int a=1;
@@ -337,66 +337,28 @@ int undo_editmode_valid(const char *undoname)
 	return undobase.last != undobase.first;
 }
 
-/* ************** for interaction with menu/pullown */
 
-void undo_editmode_menu(bContext *C)
+/* get name of undo item, return null if no item with this index */
+/* if active pointer, set it to 1 if true */
+char *undo_editmode_get_name(bContext *C, int nr, int *active)
 {
 	UndoElem *uel;
-	DynStr *ds= BLI_dynstr_new();
-	short event= 0;
-	char *menu;
-
-	undo_clean_stack(C);	// removes other objects from it
-	
-	BLI_dynstr_append(ds, "Editmode Undo History %t");
-	
-	for(uel= undobase.first; uel; uel= uel->next) {
-		BLI_dynstr_append(ds, "|");
-		BLI_dynstr_append(ds, uel->name);
-	}
-	
-	menu= BLI_dynstr_get_cstring(ds);
-	BLI_dynstr_free(ds);
-	
-// XXX	event= pupmenu_col(menu, 20);
-	MEM_freeN(menu);
 	
-	if(event>0) undo_number(C, event);
-}
-
-static void do_editmode_undohistorymenu(bContext *C, void *UNUSED(arg), int event)
-{
-	Object *obedit= CTX_data_edit_object(C);
-	
-	if(obedit==NULL || event<1) return;
-
-	undo_number(C, event-1);
+	/* prevent wrong numbers to be returned */
+	undo_clean_stack(C);
 	
-}
-
-uiBlock *editmode_undohistorymenu(bContext *C, ARegion *ar, void *UNUSED(arg))
-{
-	uiBlock *block;
-	UndoElem *uel;
-	short yco = 20, menuwidth = 120;
-	short item= 1;
+	if(active) *active= 0;
 	
-	undo_clean_stack(C);	// removes other objects from it
-
-	block= uiBeginBlock(C, ar, "view3d_edit_mesh_undohistorymenu", UI_EMBOSSP);
-	uiBlockSetButmFunc(block, do_editmode_undohistorymenu, NULL);
-	
-	for(uel= undobase.first; uel; uel= uel->next, item++) {
-		if (uel==curundo) uiDefBut(block, SEPR, 0, "",		0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");
-		uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, uel->name, 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, (float)item, "");
-		if (uel==curundo) uiDefBut(block, SEPR, 0, "",		0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");
+	uel= BLI_findlink(&undobase, nr);
+	if(uel) {
+		if(active && uel==curundo)
+			*active= 1;
+		return uel->name;
 	}
-	
-	uiBlockSetDirection(block, UI_RIGHT);
-	uiTextBoundsBlock(block, 60);
-	return block;
+	return NULL;
 }
 
+
 void *undo_editmode_get_prev(Object *ob)
 {
 	UndoElem *ue= undobase.last;