Turn Symmetry Guides visibility on and off if mirroring is enabled

Also fixed issue with "Show Guides" view menu option and having multiple projects with guides. Only think remaining is to make the Symmetry Guides look different than regular guides. Closes #133.

CHANGELOG.md

@@ -15,6 +15,7 @@ Darshan Phaldesai (luiq54), Igor Santarek (jegor377), rob-a-bolton, Kinwailo
 - You can now drag & drop files into the program while it's running to open them. You can open .pxo files, image files and palette (json and gpl) files this way.
 - You can now draw on the tiling mode previews! ([#65](https://github.com/Orama-Interactive/Pixelorama/issues/65))
 - Added Resize Canvas option to Image menu.
+- Added Symmetry Guides. They let you change the axis of symmetry for mirroring. ([#133](https://github.com/Orama-Interactive/Pixelorama/issues/133))
 - Palettes can now be created from the colors of the selected sprite.
 - You can now preview how the frames of the spritesheet you are importing will look.
 - You can now import image files as layers. Their size will be cropped to the project's size.

src/Autoload/Global.gd

@@ -42,6 +42,8 @@ var right_cursor_tool_texture := ImageTexture.new()
 
 var image_clipboard : Image
 var play_only_tags := true
+var show_x_symmetry_axis := false
+var show_y_symmetry_axis := false
 
 # Preferences
 var theme_type : int = Theme_Types.DARK

src/Classes/Project.gd

@@ -126,7 +126,12 @@ func change_project() -> void:
 	for guide in Global.canvas.get_children():
 		if guide is Guide:
 			if guide in guides:
-				guide.visible = true
+				guide.visible = Global.show_guides
+				if guide is SymmetryGuide:
+					if guide.type == Guide.Types.HORIZONTAL:
+						guide.visible = Global.show_x_symmetry_axis and Global.show_guides
+					else:
+						guide.visible = Global.show_y_symmetry_axis and Global.show_guides
 			else:
 				guide.visible = false
 

src/Tools/Base.gd

@@ -27,11 +27,21 @@ func _on_PixelPerfect_toggled(button_pressed : bool):
 func _on_Horizontal_toggled(button_pressed : bool):
 	tool_slot.horizontal_mirror = button_pressed
 	tool_slot.save_config()
+	Global.show_y_symmetry_axis = button_pressed
+	# If the button is not pressed but another button is, keep the symmetry guide visible
+	if !button_pressed and (Tools._slots[BUTTON_LEFT].horizontal_mirror or Tools._slots[BUTTON_RIGHT].horizontal_mirror):
+		Global.show_y_symmetry_axis = true
+	Global.current_project.y_symmetry_axis.visible = Global.show_y_symmetry_axis and Global.show_guides
 
 
 func _on_Vertical_toggled(button_pressed : bool):
 	tool_slot.vertical_mirror = button_pressed
 	tool_slot.save_config()
+	Global.show_x_symmetry_axis = button_pressed
+	# If the button is not pressed but another button is, keep the symmetry guide visible
+	if !button_pressed and (Tools._slots[BUTTON_LEFT].vertical_mirror or Tools._slots[BUTTON_RIGHT].vertical_mirror):
+		Global.show_x_symmetry_axis = true
+	Global.current_project.x_symmetry_axis.visible = Global.show_x_symmetry_axis and Global.show_guides
 
 
 func save_config() -> void:

src/UI/Rulers/SymmetryGuide.gd

@@ -4,6 +4,7 @@ class_name SymmetryGuide extends Guide
 func _ready() -> void:
 	._ready()
 	has_focus = false
+	visible = false
 
 
 func _input(_event : InputEvent) -> void:

src/UI/TopMenuContainer.gd

@@ -260,8 +260,13 @@ func toggle_show_guides() -> void:
 	Global.show_guides = !Global.show_guides
 	view_menu.set_item_checked(3, Global.show_guides)
 	for guide in Global.canvas.get_children():
-		if guide is Guide:
+		if guide is Guide and guide in Global.current_project.guides:
 			guide.visible = Global.show_guides
+			if guide is SymmetryGuide:
+				if guide.type == Guide.Types.HORIZONTAL:
+					guide.visible = Global.show_x_symmetry_axis and Global.show_guides
+				else:
+					guide.visible = Global.show_y_symmetry_axis and Global.show_guides
 
 
 func toggle_show_anim_timeline() -> void: