Add 2 commands in the editor:

"update transitions"(key b) and "delay transitions update" (key ctrl+t)

data/themes/editor.cfg

@@ -219,6 +219,23 @@ name=editor
 	alt=no
 	shift=no
 	[/hotkey]
+	
+	[hotkey]
+	command="editupdate"
+	key="b"
+	cmd=no
+	alt=no
+	shift=no
+	[/hotkey]
+	
+	[hotkey]
+	command="editautoupdate"
+	key="t"
+	cmd=yes
+	alt=no
+	shift=no
+	[/hotkey]
+
 
 	[hotkey]
 	command="changelanguage"
@@ -437,6 +454,22 @@ name=editor
 	shift=no
 	[/hotkey]
 
+	[hotkey]
+	command="editupdate"
+	key="b"
+	ctrl=no
+	alt=no
+	shift=no
+	[/hotkey]
+
+	[hotkey]
+	command="editautoupdate"
+	key="t"
+	ctrl=yes
+	alt=no
+	shift=no
+	[/hotkey]
+
 	[hotkey]
 	command="changelanguage"
 	key="l"
@@ -469,14 +502,14 @@ height=600
 	[menu]
 	title=_"Edit"
 	image=lite
-	items=undo,redo,editcut,editcopy,editpaste,editselectall,editfillselection,editresize,editflip,editrefresh
+	items=undo,redo,editcut,editcopy,editpaste,editselectall,editfillselection,editresize,editflip,editrefresh,editupdate,
 	rect=107,1,207,22
 	[/menu]
 
 	[menu]
 	title=_"Settings"
 	image=lite
-	items=changelanguage,preferences
+	items=changelanguage,preferences,editautoupdate
 	rect=211,1,311,22
 	[/menu]
 

src/editor/editor.cpp

@@ -170,7 +170,7 @@ int map_editor::old_brush_size_;
 
 map_editor::map_editor(display &gui, editormap &map, config &theme, config &game_config)
 	: gui_(gui), map_(map), abort_(DONT_ABORT),
-	  theme_(theme), game_config_(game_config), map_dirty_(false), l_button_palette_dirty_(true),
+	  theme_(theme), game_config_(game_config), map_dirty_(false),  auto_update_(true), l_button_palette_dirty_(true),
 	  everything_dirty_(false), palette_(gui, size_specs_, map, game_config), brush_(gui, size_specs_),
 	  l_button_held_func_(NONE), tooltip_manager_(gui_.video()), floating_label_manager_(),
 	  mouse_moved_(false),
@@ -261,6 +261,10 @@ void map_editor::load_tooltips()
 				text = _("Resize the map");
 			else if(menu_items.back() == "editflip")
 				text = _("Flip map");
+			else if(menu_items.back() == "editupdate")
+				text = _("Update transitions");
+			else if(menu_items.back() == "editautoupdate")
+				text = _("Delay transitions update");
 		}
 
 		if(text != "")
@@ -738,6 +742,20 @@ void map_editor::edit_refresh() {
 	redraw_everything();
 }
 
+void map_editor::edit_update() {
+	if (map_dirty_) {
+		map_dirty_ = false;
+		gui_.rebuild_all();
+		gui_.invalidate_all();
+		recalculate_starting_pos_labels();
+		gui_.recalculate_minimap();
+	}
+}
+
+void map_editor::edit_auto_update() {
+	auto_update_ = !auto_update_;
+}
+
 void map_editor::insert_selection_in_clipboard() {
 	if (selected_hexes_.empty()) {
 		return;
@@ -792,6 +810,8 @@ bool map_editor::can_execute_command(hotkey::HOTKEY_COMMAND command, int) const
 	case hotkey::HOTKEY_EDIT_SELECT_ALL:
 	case hotkey::HOTKEY_EDIT_DRAW:
 	case hotkey::HOTKEY_EDIT_REFRESH:
+	case hotkey::HOTKEY_EDIT_UPDATE:
+	case hotkey::HOTKEY_EDIT_AUTO_UPDATE:
 	case hotkey::HOTKEY_LANGUAGE:
 		return true;
 	default:
@@ -1529,7 +1549,7 @@ void map_editor::main_loop() {
 		// When the map has changed, wait until the left mouse button is
 		// not held down and then update the minimap and the starting
 		// position labels.
-		if (map_dirty_) {
+		if (map_dirty_ && auto_update_) {
 			if (!l_button_down && !r_button_down) {
 				map_dirty_ = false;
 				gui_.rebuild_all();

src/editor/editor.hpp

@@ -125,6 +125,8 @@ public:
 	virtual void edit_select_all();
 	virtual void edit_draw();
 	virtual void edit_refresh();
+	virtual void edit_update();
+	virtual void edit_auto_update();
 
 	void perform_flood_fill();
 	void perform_paste();
@@ -320,8 +322,9 @@ private:
 	gamemap::location selected_hex_;
 	// When map_dirty_ is true, schedule redraw of the minimap and
 	// perform some updates like recalculating labels of starting
-	// positions.
+	// positions. But only it the option auto_update is enabled 
 	bool map_dirty_;
+	bool auto_update_;
 	bool l_button_palette_dirty_;
 	bool everything_dirty_;
 	terrain_palette palette_;

src/hotkeys.cpp

@@ -112,6 +112,8 @@ const struct {
 	{ hotkey::HOTKEY_EDIT_SELECT_ALL, "editselectall", N_("Select All"),true },
 	{ hotkey::HOTKEY_EDIT_DRAW, "editdraw", N_("Draw Terrain"),true },
 	{ hotkey::HOTKEY_EDIT_REFRESH, "editrefresh", N_("Refresh Image Cache"), true },
+	{ hotkey::HOTKEY_EDIT_AUTO_UPDATE, "editautoupdate", N_("Delay transitions updates"), true },
+	{ hotkey::HOTKEY_EDIT_UPDATE, "editupdate", N_("Update transitions"), true },
 
 	{ hotkey::HOTKEY_DELAY_SHROUD, "delayshroud", N_("Delay Shroud Updates"), false },
 	{ hotkey::HOTKEY_UPDATE_SHROUD, "updateshroud", N_("Update Shroud Now"), false },
@@ -672,6 +674,12 @@ bool command_executor::execute_command(HOTKEY_COMMAND command, int index)
 		 case HOTKEY_EDIT_REFRESH:
 			edit_refresh();
 			break;
+		 case HOTKEY_EDIT_UPDATE:
+			edit_update();
+			break;
+		 case HOTKEY_EDIT_AUTO_UPDATE:
+			edit_auto_update();
+			break;
 		 case HOTKEY_LANGUAGE:
 			change_language();
 			break;

src/hotkeys.hpp

@@ -54,7 +54,7 @@ enum HOTKEY_COMMAND {
 	HOTKEY_EDIT_FILL_SELECTION, HOTKEY_EDIT_CUT, HOTKEY_EDIT_COPY,
 	HOTKEY_EDIT_PASTE, HOTKEY_EDIT_REVERT, HOTKEY_EDIT_RESIZE,
 	HOTKEY_EDIT_FLIP, HOTKEY_EDIT_SELECT_ALL, HOTKEY_EDIT_DRAW,
-	HOTKEY_EDIT_REFRESH,
+	HOTKEY_EDIT_REFRESH, HOTKEY_EDIT_UPDATE, HOTKEY_EDIT_AUTO_UPDATE,
 
 	//misc.
 	HOTKEY_USER_CMD,
@@ -216,6 +216,8 @@ public:
 	virtual void edit_select_all() {}
 	virtual void edit_draw() {}
 	virtual void edit_refresh() {}
+	virtual void edit_update() {}
+	virtual void edit_auto_update() {}
 
 	//Gets the action's image (if any). Displayed left of the action text in menus.
 	virtual std::string get_action_image(hotkey::HOTKEY_COMMAND /*command*/, int /*index*/) const { return ""; }