Added a displace origin option to Rectangle, Ellipse and Rectangle Selection tools

Works with Mouse Click + Alt. Needs to be documented in the tooltips.

project.godot

@@ -551,6 +551,11 @@ escape={
 "events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":16777217,"unicode":0,"echo":false,"script":null)
  ]
 }
+alt={
+"deadzone": 0.5,
+"events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":16777240,"unicode":0,"echo":false,"script":null)
+ ]
+}
 
 [locale]
 

src/Tools/SelectionTools/RectSelect.gd

@@ -6,6 +6,7 @@ var _start_pos := Vector2.ZERO
 
 var _square := false # Mouse Click + Shift
 var _expand_from_center := false # Mouse Click + Ctrl
+var _displace_origin = false # Mouse Click + Alt
 
 
 func _input(event : InputEvent) -> void:
@@ -18,6 +19,10 @@ func _input(event : InputEvent) -> void:
 			_expand_from_center = true
 		elif event.is_action_released("ctrl"):
 			_expand_from_center = false
+		if event.is_action_pressed("alt"):
+			_displace_origin = true
+		elif event.is_action_released("alt"):
+			_displace_origin = false
 
 
 func draw_start(position : Vector2) -> void:
@@ -29,10 +34,13 @@ func draw_start(position : Vector2) -> void:
 func draw_move(position : Vector2) -> void:
 	.draw_move(position)
 	if !_move:
+		if _displace_origin:
+			_start_pos += position - _offset
 		_rect = _get_result_rect(_start_pos, position)
 		_set_cursor_text(_rect)
 		Global.canvas.selection.drawn_rect = _rect
 		Global.canvas.selection.update()
+		_offset = position
 
 
 func draw_end(position : Vector2) -> void:
@@ -42,6 +50,7 @@ func draw_end(position : Vector2) -> void:
 	Global.canvas.selection.update()
 	_square = false
 	_expand_from_center = false
+	_displace_origin = false
 
 
 func apply_selection(_position) -> void:

src/Tools/SelectionTools/SelectionTool.gd

@@ -29,6 +29,7 @@ func draw_start(position : Vector2) -> void:
 	_intersect = Tools.shift && Tools.control
 	_add = Tools.shift && !_intersect
 	_subtract = Tools.control && !_intersect
+	_offset = position
 
 	var selection_position : Vector2 = Global.canvas.selection.big_bounding_rectangle.position
 	var offsetted_pos := position
@@ -39,7 +40,6 @@ func draw_start(position : Vector2) -> void:
 	if offsetted_pos.x >= 0 and offsetted_pos.y >= 0 and Global.current_project.selection_bitmap.get_bit(offsetted_pos) and (!Tools.control or Tools.alt) and !Tools.shift:
 		# Move current selection
 		_move = true
-		_offset = position
 		if Tools.control and Tools.alt: # Move selection without content
 			Global.canvas.selection.transform_content_confirm()
 			_move_content = false

src/Tools/ShapeDrawer.gd

@@ -2,9 +2,11 @@ extends "res://src/Tools/Draw.gd"
 
 
 var _start := Vector2.ZERO
+var _offset := Vector2.ZERO
 var _dest := Vector2.ZERO
 var _fill := false
 var _drawing := false
+var _displace_origin := false
 var _thickness := 1
 
 
@@ -52,18 +54,30 @@ func _get_shape_points_filled(_size: Vector2) -> PoolVector2Array:
 	return PoolVector2Array()
 
 
+func _input(event : InputEvent) -> void:
+	if _drawing:
+		if event.is_action_pressed("alt"):
+			_displace_origin = true
+		elif event.is_action_released("alt"):
+			_displace_origin = false
+
+
 func draw_start(position : Vector2) -> void:
 	Global.canvas.selection.transform_content_confirm()
 	update_mask()
 
 	_start = position
+	_offset = position
 	_dest = position
 	_drawing = true
 
 
 func draw_move(position : Vector2) -> void:
 	if _drawing:
+		if _displace_origin:
+			_start += position - _offset
 		_dest = position
+		_offset = position
 
 
 func draw_end(position : Vector2) -> void:
@@ -73,6 +87,7 @@ func draw_end(position : Vector2) -> void:
 		_start = Vector2.ZERO
 		_dest = Vector2.ZERO
 		_drawing = false
+		_displace_origin = false
 
 
 func draw_preview() -> void: