Add backend for diagonal mirror buttons

The buttons are not yet visible

assets/graphics/misc/x_minus_y_mirror_off.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://1kj5gcswa3t2"
+path="res://.godot/imported/x_minus_y_mirror_off.png-da237e3b5b7ad1dfef1c935385f53dc5.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://assets/graphics/misc/x_minus_y_mirror_off.png"
+dest_files=["res://.godot/imported/x_minus_y_mirror_off.png-da237e3b5b7ad1dfef1c935385f53dc5.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1

assets/graphics/misc/x_minus_y_mirror_on.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://dn14bkxwdqsfk"
+path="res://.godot/imported/x_minus_y_mirror_on.png-0e9186904d8241facc4a0c1190f32c53.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://assets/graphics/misc/x_minus_y_mirror_on.png"
+dest_files=["res://.godot/imported/x_minus_y_mirror_on.png-0e9186904d8241facc4a0c1190f32c53.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1

assets/graphics/misc/xy_mirror_off.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://dlxhm0ronna25"
+path="res://.godot/imported/xy_mirror_off.png-8d2fd9ebdf350f0cd384fdf39fed4ec1.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://assets/graphics/misc/xy_mirror_off.png"
+dest_files=["res://.godot/imported/xy_mirror_off.png-8d2fd9ebdf350f0cd384fdf39fed4ec1.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1

assets/graphics/misc/xy_mirror_on.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cu2uqp5oupt80"
+path="res://.godot/imported/xy_mirror_on.png-95d443df3b6d17add41283bdd720ea7e.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://assets/graphics/misc/xy_mirror_on.png"
+dest_files=["res://.godot/imported/xy_mirror_on.png-95d443df3b6d17add41283bdd720ea7e.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1

src/Autoload/Global.gd

@@ -184,7 +184,7 @@ var show_x_symmetry_axis := false
 ## If true, the y symmetry guide ( | ) is visible.
 var show_y_symmetry_axis := false
 ## If true, the x=y symmetry guide ( / ) is visible.
-var show_x_y_symmetry_axis := false
+var show_xy_symmetry_axis := false
 ## If true, the x==y symmetry guide ( \ ) is visible.
 var show_x_minus_y_symmetry_axis := false
 

src/Autoload/Tools.gd

@@ -15,8 +15,8 @@ const X_MINUS_Y_LINE := Vector2(0.707107, 0.707107)
 var picking_color_for := MOUSE_BUTTON_LEFT
 var horizontal_mirror := false
 var vertical_mirror := false
-var diagonal_mirror := false
+var diagonal_xy_mirror := false
-var diagonal_opposite_mirror := false
+var diagonal_x_minus_y_mirror := false
 var pixel_perfect := false
 var alpha_locked := false
 
@@ -534,23 +534,23 @@ func get_mirrored_positions(
 		if vertical_mirror:
 			positions.append(calculate_mirror_vertical(mirror_x, project, offset))
 		else:
-			if diagonal_mirror:
+			if diagonal_xy_mirror:
 				positions.append(calculate_mirror_xy(mirror_x, project))
-			if diagonal_opposite_mirror:
+			if diagonal_x_minus_y_mirror:
 				positions.append(calculate_mirror_x_minus_y(mirror_x, project))
 	if vertical_mirror:
 		var mirror_y := calculate_mirror_vertical(pos, project, offset)
 		positions.append(mirror_y)
-		if diagonal_mirror:
+		if diagonal_xy_mirror:
 			positions.append(calculate_mirror_xy(mirror_y, project))
-		if diagonal_opposite_mirror:
+		if diagonal_x_minus_y_mirror:
 			positions.append(calculate_mirror_x_minus_y(mirror_y, project))
-	if diagonal_mirror:
+	if diagonal_xy_mirror:
 		var mirror_diagonal := calculate_mirror_xy(pos, project)
 		positions.append(mirror_diagonal)
 		if not horizontal_mirror and not vertical_mirror:
 			positions.append(calculate_mirror_x_minus_y(mirror_diagonal, project))
-	if diagonal_opposite_mirror:
+	if diagonal_x_minus_y_mirror:
 		positions.append(calculate_mirror_x_minus_y(pos, project))
 	return positions
 

src/Classes/Drawers.gd

@@ -87,8 +87,8 @@ func set_pixel(image: Image, position: Vector2i, color: Color, ignore_mirroring
 	if (
 		not Tools.horizontal_mirror
 		and not Tools.vertical_mirror
-		and not Tools.diagonal_mirror
+		and not Tools.diagonal_xy_mirror
-		and not Tools.diagonal_opposite_mirror
+		and not Tools.diagonal_x_minus_y_mirror
 	):
 		return
 	# Handle mirroring

src/UI/Canvas/Rulers/Guide.gd

@@ -234,7 +234,7 @@ func _project_switched() -> void:
 			elif type == Types.VERTICAL:
 				visible = Global.show_y_symmetry_axis and Global.show_guides
 			elif type == Types.XY:
-				visible = Global.show_x_y_symmetry_axis and Global.show_guides
+				visible = Global.show_xy_symmetry_axis and Global.show_guides
 			elif type == Types.X_MINUS_Y:
 				visible = Global.show_x_minus_y_symmetry_axis and Global.show_guides
 	else:

src/UI/GlobalToolOptions/GlobalToolOptions.gd

@@ -3,6 +3,8 @@ extends PanelContainer
 @onready var grid_container: GridContainer = find_child("GridContainer")
 @onready var horizontal_mirror: BaseButton = grid_container.get_node("Horizontal")
 @onready var vertical_mirror: BaseButton = grid_container.get_node("Vertical")
+@onready var diagonal_xy_mirror: BaseButton = grid_container.get_node("DiagonalXY")
+@onready var diagonal_x_minus_y_mirror: BaseButton = grid_container.get_node("DiagonalXMinusY")
 @onready var pixel_perfect: BaseButton = grid_container.get_node("PixelPerfect")
 @onready var alpha_lock: BaseButton = grid_container.get_node("AlphaLock")
 @onready var dynamics: Button = $"%Dynamics"
@@ -39,25 +41,25 @@ func _on_resized() -> void:
 	grid_container.columns = column_n
 
 
-func _on_Horizontal_toggled(button_pressed: bool) -> void:
+func _on_Horizontal_toggled(toggled_on: bool) -> void:
-	Tools.horizontal_mirror = button_pressed
+	Tools.horizontal_mirror = toggled_on
-	Global.config_cache.set_value("tools", "horizontal_mirror", button_pressed)
+	Global.config_cache.set_value("tools", "horizontal_mirror", toggled_on)
-	Global.show_y_symmetry_axis = button_pressed
+	Global.show_y_symmetry_axis = toggled_on
 	Global.current_project.y_symmetry_axis.visible = (
 		Global.show_y_symmetry_axis and Global.show_guides
 	)
 
 	var texture_button: TextureRect = horizontal_mirror.get_node("TextureRect")
 	var file_name := "horizontal_mirror_on.png"
-	if !button_pressed:
+	if not toggled_on:
 		file_name = "horizontal_mirror_off.png"
 	Global.change_button_texturerect(texture_button, file_name)
 
 
-func _on_Vertical_toggled(button_pressed: bool) -> void:
+func _on_Vertical_toggled(toggled_on: bool) -> void:
-	Tools.vertical_mirror = button_pressed
+	Tools.vertical_mirror = toggled_on
-	Global.config_cache.set_value("tools", "vertical_mirror", button_pressed)
+	Global.config_cache.set_value("tools", "vertical_mirror", toggled_on)
-	Global.show_x_symmetry_axis = button_pressed
+	Global.show_x_symmetry_axis = toggled_on
 	# If the button is not pressed but another button is, keep the symmetry guide visible
 	Global.current_project.x_symmetry_axis.visible = (
 		Global.show_x_symmetry_axis and Global.show_guides
@@ -65,11 +67,43 @@ func _on_Vertical_toggled(button_pressed: bool) -> void:
 
 	var texture_button: TextureRect = vertical_mirror.get_node("TextureRect")
 	var file_name := "vertical_mirror_on.png"
-	if !button_pressed:
+	if not toggled_on:
 		file_name = "vertical_mirror_off.png"
 	Global.change_button_texturerect(texture_button, file_name)
 
 
+func _on_diagonal_xy_toggled(toggled_on: bool) -> void:
+	Tools.diagonal_xy_mirror = toggled_on
+	Global.config_cache.set_value("tools", "diagonal_xy_mirror", toggled_on)
+	Global.show_xy_symmetry_axis = toggled_on
+	# If the button is not pressed but another button is, keep the symmetry guide visible
+	Global.current_project.diagonal_xy_symmetry_axis.visible = (
+		Global.show_xy_symmetry_axis and Global.show_guides
+	)
+
+	var texture_button: TextureRect = diagonal_xy_mirror.get_node("TextureRect")
+	var file_name := "xy_mirror_on.png"
+	if not toggled_on:
+		file_name = "xy_mirror_off.png"
+	Global.change_button_texturerect(texture_button, file_name)
+
+
+func _on_diagonal_x_minus_y_toggled(toggled_on: bool) -> void:
+	Tools.diagonal_x_minus_y_mirror = toggled_on
+	Global.config_cache.set_value("tools", "diagonal_x_minus_y_mirror", toggled_on)
+	Global.show_x_minus_y_symmetry_axis = toggled_on
+	# If the button is not pressed but another button is, keep the symmetry guide visible
+	Global.current_project.diagonal_x_minus_y_symmetry_axis.visible = (
+		Global.show_x_minus_y_symmetry_axis and Global.show_guides
+	)
+
+	var texture_button: TextureRect = diagonal_x_minus_y_mirror.get_node("TextureRect")
+	var file_name := "x_minus_y_mirror_on.png"
+	if not toggled_on:
+		file_name = "x_minus_y_mirror_off.png"
+	Global.change_button_texturerect(texture_button, file_name)
+
+
 func _on_PixelPerfect_toggled(button_pressed: bool) -> void:
 	Tools.pixel_perfect = button_pressed
 	Global.config_cache.set_value("tools", "pixel_perfect", button_pressed)

src/UI/GlobalToolOptions/GlobalToolOptions.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=25 format=3 uid="uid://wo0hqxkst808"]
+[gd_scene load_steps=27 format=3 uid="uid://wo0hqxkst808"]
 
 [ext_resource type="Texture2D" uid="uid://cjrokejjsp5dm" path="res://assets/graphics/misc/horizontal_mirror_off.png" id="1"]
 [ext_resource type="Texture2D" uid="uid://hiduvaa73fr6" path="res://assets/graphics/misc/vertical_mirror_off.png" id="2"]
@@ -6,8 +6,10 @@
 [ext_resource type="Texture2D" uid="uid://ct8wn8m6x4m54" path="res://assets/graphics/misc/value_arrow.svg" id="3_faalk"]
 [ext_resource type="Texture2D" uid="uid://22h12g8p3jtd" path="res://assets/graphics/misc/pixel_perfect_off.png" id="4"]
 [ext_resource type="Script" path="res://src/UI/Nodes/ValueSlider.gd" id="5"]
+[ext_resource type="Texture2D" uid="uid://dlxhm0ronna25" path="res://assets/graphics/misc/xy_mirror_off.png" id="5_hcmgx"]
 [ext_resource type="Texture2D" uid="uid://j8eywwy082a4" path="res://assets/graphics/misc/alpha_lock_off.png" id="5_jv20x"]
 [ext_resource type="Texture2D" uid="uid://dg3dumyfj1682" path="res://assets/graphics/misc/dynamics.png" id="6"]
+[ext_resource type="Texture2D" uid="uid://1kj5gcswa3t2" path="res://assets/graphics/misc/x_minus_y_mirror_off.png" id="6_sw8fy"]
 [ext_resource type="Texture2D" uid="uid://di8au2u87jgv5" path="res://assets/graphics/misc/uncheck.png" id="7"]
 [ext_resource type="Script" path="res://src/UI/GlobalToolOptions/DynamicsPanel.gd" id="7_iqcw1"]
 [ext_resource type="PackedScene" uid="uid://bmsc0s03pwji4" path="res://src/UI/Nodes/MaxMinEdit.tscn" id="8"]
@@ -179,6 +181,108 @@ grow_vertical = 2
 texture = ExtResource("3_faalk")
 stretch_mode = 3
 
+[node name="DiagonalXY" type="Button" parent="ScrollContainer/CenterContainer/GridContainer" groups=["UIButtons"]]
+visible = false
+custom_minimum_size = Vector2(46, 32)
+layout_mode = 2
+tooltip_text = "Enable vertical mirrored drawing"
+mouse_default_cursor_shape = 2
+toggle_mode = true
+shortcut = SubResource("Shortcut_ai7qc")
+
+[node name="TextureRect" type="TextureRect" parent="ScrollContainer/CenterContainer/GridContainer/DiagonalXY"]
+layout_mode = 1
+anchors_preset = 4
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = 5.0
+offset_top = -10.0
+offset_right = 25.0
+offset_bottom = 10.0
+grow_vertical = 2
+texture = ExtResource("5_hcmgx")
+
+[node name="MirrorOptions" type="MenuButton" parent="ScrollContainer/CenterContainer/GridContainer/DiagonalXY"]
+visible = false
+custom_minimum_size = Vector2(20, 0)
+layout_mode = 1
+anchors_preset = 6
+anchor_left = 1.0
+anchor_top = 0.5
+anchor_right = 1.0
+anchor_bottom = 0.5
+offset_left = -20.0
+offset_top = -10.0
+offset_bottom = 10.0
+grow_horizontal = 0
+grow_vertical = 2
+mouse_default_cursor_shape = 2
+item_count = 2
+popup/item_0/text = "Move to canvas center"
+popup/item_1/text = "Move to view center"
+popup/item_1/id = 1
+
+[node name="TextureRect" type="TextureRect" parent="ScrollContainer/CenterContainer/GridContainer/DiagonalXY/MirrorOptions"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+texture = ExtResource("3_faalk")
+stretch_mode = 3
+
+[node name="DiagonalXMinusY" type="Button" parent="ScrollContainer/CenterContainer/GridContainer" groups=["UIButtons"]]
+visible = false
+custom_minimum_size = Vector2(46, 32)
+layout_mode = 2
+tooltip_text = "Enable vertical mirrored drawing"
+mouse_default_cursor_shape = 2
+toggle_mode = true
+shortcut = SubResource("Shortcut_ai7qc")
+
+[node name="TextureRect" type="TextureRect" parent="ScrollContainer/CenterContainer/GridContainer/DiagonalXMinusY"]
+layout_mode = 1
+anchors_preset = 4
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = 5.0
+offset_top = -10.0
+offset_right = 25.0
+offset_bottom = 10.0
+grow_vertical = 2
+texture = ExtResource("6_sw8fy")
+
+[node name="MirrorOptions" type="MenuButton" parent="ScrollContainer/CenterContainer/GridContainer/DiagonalXMinusY"]
+visible = false
+custom_minimum_size = Vector2(20, 0)
+layout_mode = 1
+anchors_preset = 6
+anchor_left = 1.0
+anchor_top = 0.5
+anchor_right = 1.0
+anchor_bottom = 0.5
+offset_left = -20.0
+offset_top = -10.0
+offset_bottom = 10.0
+grow_horizontal = 0
+grow_vertical = 2
+mouse_default_cursor_shape = 2
+item_count = 2
+popup/item_0/text = "Move to canvas center"
+popup/item_1/text = "Move to view center"
+popup/item_1/id = 1
+
+[node name="TextureRect" type="TextureRect" parent="ScrollContainer/CenterContainer/GridContainer/DiagonalXMinusY/MirrorOptions"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+texture = ExtResource("3_faalk")
+stretch_mode = 3
+
 [node name="PixelPerfect" type="Button" parent="ScrollContainer/CenterContainer/GridContainer" groups=["UIButtons"]]
 custom_minimum_size = Vector2(32, 32)
 layout_mode = 2
@@ -546,6 +650,8 @@ offset_bottom = 23.0
 [connection signal="resized" from="." to="." method="_on_resized"]
 [connection signal="toggled" from="ScrollContainer/CenterContainer/GridContainer/Horizontal" to="." method="_on_Horizontal_toggled"]
 [connection signal="toggled" from="ScrollContainer/CenterContainer/GridContainer/Vertical" to="." method="_on_Vertical_toggled"]
+[connection signal="toggled" from="ScrollContainer/CenterContainer/GridContainer/DiagonalXY" to="." method="_on_diagonal_xy_toggled"]
+[connection signal="toggled" from="ScrollContainer/CenterContainer/GridContainer/DiagonalXMinusY" to="." method="_on_diagonal_x_minus_y_toggled"]
 [connection signal="toggled" from="ScrollContainer/CenterContainer/GridContainer/PixelPerfect" to="." method="_on_PixelPerfect_toggled"]
 [connection signal="toggled" from="ScrollContainer/CenterContainer/GridContainer/AlphaLock" to="." method="_on_alpha_lock_toggled"]
 [connection signal="pressed" from="ScrollContainer/CenterContainer/GridContainer/Dynamics" to="." method="_on_Dynamics_pressed"]

src/UI/TopMenuContainer/TopMenuContainer.gd

@@ -838,7 +838,7 @@ func _toggle_show_guides() -> void:
 				elif guide.type == Guide.Types.VERTICAL:
 					guide.visible = Global.show_y_symmetry_axis and Global.show_guides
 				elif guide.type == Guide.Types.XY:
-					guide.visible = Global.show_x_y_symmetry_axis and Global.show_guides
+					guide.visible = Global.show_xy_symmetry_axis and Global.show_guides
 				elif guide.type == Guide.Types.X_MINUS_Y:
 					guide.visible = Global.show_x_minus_y_symmetry_axis and Global.show_guides