Optimize StringName usage

* Added a new macro SNAME() that constructs and caches a local stringname.
* Subsequent usages use the cached version.
* Since these use a global static variable, a second refcounter of static usages need to be kept for cleanup time.
* Replaced all theme usages by this new macro.
* Replace all signal emission usages by this new macro.
* Replace all call_deferred usages by this new macro.

This is part of ongoing work to optimize GUI and the editor.

1 files changed, 2 insertions, 2 deletions

diff --git a/scene/2d/touch_screen_button.cpp b/scene/2d/touch_screen_button.cpp
index 0a6393551c..7c345ad377 100644
--- a/scene/2d/touch_screen_button.cpp
+++ b/scene/2d/touch_screen_button.cpp
@@ -294,7 +294,7 @@ void TouchScreenButton::_press(int p_finger_pressed) {
 		get_viewport()->input(iea, true);
 	}
 
-	emit_signal("pressed");
+	emit_signal(SNAME("pressed"));
 	update();
 }
 
@@ -313,7 +313,7 @@ void TouchScreenButton::_release(bool p_exiting_tree) {
 	}
 
 	if (!p_exiting_tree) {
-		emit_signal("released");
+		emit_signal(SNAME("released"));
 		update();
 	}
 }