Optimize canvas drawing by only calling update when the image has cha…

…nged

src/Tools/3DShapeEdit.gd

@@ -76,6 +76,7 @@ onready var object_properties := {
 func sprite_changed_this_frame():
 	_checker_update_qued = true
 	_old_cel_image = _cel.get_image()
+	Global.canvas.sprite_changed_this_frame = true
 
 
 func _input(_event: InputEvent) -> void:

src/Tools/Move.gd

@@ -46,6 +46,7 @@ func draw_start(position: Vector2) -> void:
 	if Global.current_project.has_selection:
 		selection_node.transform_content_start()
 	_content_transformation_check = selection_node.is_moving_content
+	Global.canvas.sprite_changed_this_frame = true
 
 
 func draw_move(position: Vector2) -> void:
@@ -63,6 +64,7 @@ func draw_move(position: Vector2) -> void:
 	else:
 		Global.canvas.move_preview_location = position - _start_pos
 	_offset = position
+	Global.canvas.sprite_changed_this_frame = true
 
 
 func draw_end(position: Vector2) -> void:
@@ -92,6 +94,7 @@ func draw_end(position: Vector2) -> void:
 
 	_start_pos = Vector2.INF
 	_snap_to_grid = false
+	Global.canvas.sprite_changed_this_frame = true
 
 
 func _snap_position(position: Vector2) -> Vector2:

src/UI/Canvas/Canvas.gd

@@ -93,14 +93,12 @@ func _input(event: InputEvent) -> void:
 	var tmp_transform := get_canvas_transform().affine_inverse()
 	current_pixel = tmp_transform.basis_xform(tmp_position) + tmp_transform.origin
 
-	if Global.has_focus:
-		update()
-
 	sprite_changed_this_frame = false
-
 	Tools.handle_draw(current_pixel.floor(), event)
 
 	if sprite_changed_this_frame:
+		if Global.has_focus:
+			update()
 		update_selected_cels_textures()
 
 

src/UI/Canvas/Selection.gd

@@ -396,6 +396,7 @@ func resize_selection() -> void:
 	Global.current_project.selection_map = selection_map_copy
 	Global.current_project.selection_map_changed()
 	update()
+	Global.canvas.update()
 
 
 func _gizmo_rotate() -> void:  # Does not work properly yet
@@ -430,6 +431,7 @@ func _gizmo_rotate() -> void:  # Does not work properly yet
 	Global.current_project.selection_map_changed()
 	self.big_bounding_rectangle = bitmap_image.get_used_rect()
 	update()
+	Global.canvas.update()
 
 
 func select_rect(rect: Rect2, operation: int = SelectionOperation.ADD) -> void:
@@ -482,6 +484,7 @@ func move_borders(move: Vector2) -> void:
 	marching_ants_outline.offset += move
 	self.big_bounding_rectangle.position += move
 	update()
+	Global.canvas.update()
 
 
 func move_borders_end() -> void:
@@ -494,6 +497,7 @@ func move_borders_end() -> void:
 	else:
 		Global.current_project.selection_map_changed()
 	update()
+	Global.canvas.update()
 
 
 func transform_content_start() -> void:
@@ -510,6 +514,7 @@ func transform_content_start() -> void:
 	original_big_bounding_rectangle = big_bounding_rectangle
 	original_offset = Global.current_project.selection_offset
 	update()
+	Global.canvas.update()
 
 
 func move_content(move: Vector2) -> void:
@@ -554,6 +559,7 @@ func transform_content_confirm() -> void:
 	is_moving_content = false
 	is_pasting = false
 	update()
+	Global.canvas.update()
 
 
 func transform_content_cancel() -> void:
@@ -584,6 +590,7 @@ func transform_content_cancel() -> void:
 	original_bitmap = SelectionMap.new()
 	is_pasting = false
 	update()
+	Global.canvas.update()
 
 
 func commit_undo(action: String, undo_data_tmp: Dictionary) -> void: