Fix content transformation not getting confirmed when changes were done to frames and layers

Also fixes issue where frame/layer copying does not copy the transformed data

Author: OverloadedOrama

src/Classes/Project.gd

@@ -387,6 +387,7 @@ func size_changed(value : Vector2) -> void:
 
 
 func frames_changed(value : Array) -> void:
+	Global.canvas.selection.transform_content_confirm()
 	frames = value
 	selected_cels.clear()
 	remove_cel_buttons()

src/UI/Timeline/AnimationTimeline.gd

@@ -161,6 +161,7 @@ func _on_DeleteFrame_pressed(frame := -1) -> void:
 
 
 func _on_CopyFrame_pressed(frame := -1) -> void:
+	Global.canvas.selection.transform_content_confirm()
 	if frame == -1:
 		frame = Global.current_project.current_frame
 
@@ -272,6 +273,7 @@ func _on_AnimationTimer_timeout() -> void:
 		$AnimationTimer.stop()
 		return
 
+	Global.canvas.selection.transform_content_confirm()
 	var fps = Global.current_project.fps
 	if animation_forward:
 		if Global.current_project.current_frame < last_frame:
@@ -355,23 +357,27 @@ func play_animation(play : bool, forward_dir : bool) -> void:
 
 
 func _on_NextFrame_pressed() -> void:
+	Global.canvas.selection.transform_content_confirm()
 	Global.current_project.selected_cels.clear()
 	if Global.current_project.current_frame < Global.current_project.frames.size() - 1:
 		Global.current_project.current_frame += 1
 
 
 func _on_PreviousFrame_pressed() -> void:
+	Global.canvas.selection.transform_content_confirm()
 	Global.current_project.selected_cels.clear()
 	if Global.current_project.current_frame > 0:
 		Global.current_project.current_frame -= 1
 
 
 func _on_LastFrame_pressed() -> void:
+	Global.canvas.selection.transform_content_confirm()
 	Global.current_project.selected_cels.clear()
 	Global.current_project.current_frame = Global.current_project.frames.size() - 1
 
 
 func _on_FirstFrame_pressed() -> void:
+	Global.canvas.selection.transform_content_confirm()
 	Global.current_project.selected_cels.clear()
 	Global.current_project.current_frame = 0
 
@@ -399,6 +405,7 @@ func _on_BlueRedMode_toggled(button_pressed : bool) -> void:
 # Layer buttons
 
 func add_layer(is_new := true) -> void:
+	Global.canvas.selection.transform_content_confirm()
 	var new_layers : Array = Global.current_project.layers.duplicate()
 	var l := Layer.new()
 	if !is_new: # Clone layer

src/UI/Timeline/CelButton.gd

@@ -45,6 +45,7 @@ func _on_CelButton_resized() -> void:
 func _on_CelButton_pressed() -> void:
 	var project := Global.current_project
 	if Input.is_action_just_released("left_mouse"):
+		Global.canvas.selection.transform_content_confirm()
 		var change_cel := true
 		var prev_curr_frame : int = project.current_frame
 		var prev_curr_layer : int = project.current_layer

src/UI/Timeline/FrameButton.gd

@@ -12,6 +12,7 @@ func _ready() -> void:
 
 func _button_pressed() -> void:
 	if Input.is_action_just_released("left_mouse"):
+		Global.canvas.selection.transform_content_confirm()
 		var prev_curr_frame : int = Global.current_project.current_frame
 		if Input.is_action_pressed("shift"):
 			var frame_diff_sign = sign(frame - prev_curr_frame)

src/UI/Timeline/LayerButton.gd

@@ -49,6 +49,7 @@ func _on_LayerContainer_gui_input(event : InputEvent) -> void:
 	var project := Global.current_project
 
 	if event is InputEventMouseButton:
+		Global.canvas.selection.transform_content_confirm()
 		var prev_curr_layer : int = project.current_layer
 		if Input.is_action_pressed("shift"):
 			var layer_diff_sign = sign(layer - prev_curr_layer)