Added dialog with options for invert colors

src/UI/Dialogs/ExportDialog.tscn

@@ -244,7 +244,7 @@ margin_right = 235.0
 margin_bottom = 24.0
 mouse_default_cursor_shape = 2
 size_flags_horizontal = 3
-min_value = 10.0
+min_value = 50.0
 max_value = 1000.0
 step = 100.0
 value = 100.0

src/UI/Dialogs/ImageEffects/ImageEffects.tscn

@@ -1,6 +1,7 @@
-[gd_scene load_steps=9 format=2]
+[gd_scene load_steps=10 format=2]
 
 [ext_resource path="res://src/UI/Dialogs/ImageEffects/FlipImageDialog.tscn" type="PackedScene" id=1]
+[ext_resource path="res://src/UI/Dialogs/ImageEffects/InvertColorsDialog.tscn" type="PackedScene" id=2]
 [ext_resource path="res://src/UI/Dialogs/ImageEffects/ResizeCanvas.tscn" type="PackedScene" id=8]
 [ext_resource path="res://src/UI/Dialogs/ImageEffects/RotateImage.tscn" type="PackedScene" id=9]
 [ext_resource path="res://src/UI/Dialogs/ImageEffects/ShaderEffect.tscn" type="PackedScene" id=10]
@@ -15,8 +16,6 @@ __meta__ = {
 "_edit_use_anchors_": false
 }
 
-[node name="FlipImageDialog" parent="." instance=ExtResource( 1 )]
-
 [node name="ScaleImage" parent="." instance=ExtResource( 14 )]
 margin_bottom = 127.0
 
@@ -26,6 +25,12 @@ margin_bottom = 392.0
 
 [node name="RotateImage" parent="." instance=ExtResource( 9 )]
 
+[node name="FlipImageDialog" parent="." instance=ExtResource( 1 )]
+margin_right = 283.0
+margin_bottom = 300.0
+
+[node name="InvertColorsDialog" parent="." instance=ExtResource( 2 )]
+
 [node name="OutlineDialog" parent="." instance=ExtResource( 13 )]
 margin_right = 217.0
 margin_bottom = 106.0

src/UI/Dialogs/ImageEffects/InvertColorsDialog.gd

@@ -0,0 +1,112 @@
+extends ConfirmationDialog
+
+
+enum {CEL, FRAME, ALL_FRAMES, ALL_PROJECTS}
+
+var affect : int = CEL
+var pixels := []
+var current_cel : Image
+var preview_image : Image
+var preview_texture : ImageTexture
+
+var red := true
+var green := true
+var blue := true
+var alpha := false
+
+onready var preview : TextureRect = $VBoxContainer/Preview
+onready var selection_checkbox = $VBoxContainer/OptionsContainer/SelectionCheckBox
+
+
+func _ready() -> void:
+	current_cel = Image.new()
+	preview_image = Image.new()
+	preview_texture = ImageTexture.new()
+
+
+func _on_FlipImageDialog_about_to_show() -> void:
+	current_cel = Global.current_project.frames[Global.current_project.current_frame].cels[Global.current_project.current_layer].image
+	_on_SelectionCheckBox_toggled(selection_checkbox.pressed)
+
+
+func _on_FlipImageDialog_confirmed() -> void:
+	if affect == CEL:
+		Global.canvas.handle_undo("Draw")
+		DrawingAlgos.invert_image_colors(current_cel, pixels, red, green, blue, alpha)
+		Global.canvas.handle_redo("Draw")
+	elif affect == FRAME:
+		Global.canvas.handle_undo("Draw", Global.current_project, -1)
+		for cel in Global.current_project.frames[Global.current_project.current_frame].cels:
+			DrawingAlgos.invert_image_colors(cel.image, pixels, red, green, blue, alpha)
+		Global.canvas.handle_redo("Draw", Global.current_project, -1)
+
+	elif affect == ALL_FRAMES:
+		Global.canvas.handle_undo("Draw", Global.current_project, -1, -1)
+		for frame in Global.current_project.frames:
+			for cel in frame.cels:
+				DrawingAlgos.invert_image_colors(cel.image, pixels, red, green, blue, alpha)
+		Global.canvas.handle_redo("Draw", Global.current_project, -1, -1)
+
+	elif affect == ALL_PROJECTS:
+		for project in Global.projects:
+			var _pixels := []
+			if selection_checkbox.pressed:
+				_pixels = project.selected_pixels.duplicate()
+			else:
+				for x in project.size.x:
+					for y in project.size.y:
+						_pixels.append(Vector2(x, y))
+
+			Global.canvas.handle_undo("Draw", project, -1, -1)
+			for frame in project.frames:
+				for cel in frame.cels:
+					DrawingAlgos.invert_image_colors(cel.image, _pixels, red, green, blue, alpha)
+			Global.canvas.handle_redo("Draw", project, -1, -1)
+
+
+func _on_RButton_toggled(button_pressed : bool) -> void:
+	red = button_pressed
+	update_preview()
+
+
+func _on_GButton_toggled(button_pressed : bool) -> void:
+	green = button_pressed
+	update_preview()
+
+
+func _on_BButton_toggled(button_pressed : bool) -> void:
+	blue = button_pressed
+	update_preview()
+
+
+func _on_AButton_toggled(button_pressed : bool) -> void:
+	alpha = button_pressed
+	update_preview()
+
+
+func _on_SelectionCheckBox_toggled(button_pressed : bool) -> void:
+	pixels.clear()
+	if button_pressed:
+		pixels = Global.current_project.selected_pixels.duplicate()
+	else:
+		for x in Global.current_project.size.x:
+			for y in Global.current_project.size.y:
+				pixels.append(Vector2(x, y))
+
+	update_preview()
+
+
+func _on_AffectOptionButton_item_selected(index : int) -> void:
+	affect = index
+
+
+func update_preview() -> void:
+	preview_image.copy_from(current_cel)
+	DrawingAlgos.invert_image_colors(preview_image, pixels, red, green, blue, alpha)
+	preview_image.unlock()
+	preview_texture.create_from_image(preview_image, 0)
+	preview.texture = preview_texture
+
+
+func _on_FlipImageDialog_popup_hide() -> void:
+	Global.dialog_open(false)

src/UI/Dialogs/ImageEffects/InvertColorsDialog.tscn

@@ -0,0 +1,99 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://src/UI/Dialogs/ImageEffects/InvertColorsDialog.gd" type="Script" id=1]
+
+[node name="InvertColorsDialog" type="ConfirmationDialog"]
+margin_right = 200.0
+margin_bottom = 70.0
+script = ExtResource( 1 )
+
+[node name="VBoxContainer" type="VBoxContainer" parent="."]
+margin_left = 8.0
+margin_top = 8.0
+margin_right = 271.0
+margin_bottom = 260.0
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="Preview" type="TextureRect" parent="VBoxContainer"]
+margin_right = 263.0
+margin_bottom = 200.0
+rect_min_size = Vector2( 200, 200 )
+expand = true
+stretch_mode = 6
+
+[node name="RGBAContainer" type="HBoxContainer" parent="VBoxContainer"]
+margin_top = 204.0
+margin_right = 263.0
+margin_bottom = 224.0
+alignment = 1
+
+[node name="RButton" type="Button" parent="VBoxContainer/RGBAContainer"]
+margin_left = 83.0
+margin_right = 103.0
+margin_bottom = 20.0
+hint_tooltip = "Modify Red Channel"
+mouse_default_cursor_shape = 2
+toggle_mode = true
+pressed = true
+text = "R"
+
+[node name="GButton" type="Button" parent="VBoxContainer/RGBAContainer"]
+margin_left = 107.0
+margin_right = 129.0
+margin_bottom = 20.0
+hint_tooltip = "Modify Green Channel"
+mouse_default_cursor_shape = 2
+toggle_mode = true
+pressed = true
+text = "G"
+
+[node name="BButton" type="Button" parent="VBoxContainer/RGBAContainer"]
+margin_left = 133.0
+margin_right = 154.0
+margin_bottom = 20.0
+hint_tooltip = "Modify Blue Channel"
+mouse_default_cursor_shape = 2
+toggle_mode = true
+pressed = true
+text = "B"
+
+[node name="AButton" type="Button" parent="VBoxContainer/RGBAContainer"]
+margin_left = 158.0
+margin_right = 179.0
+margin_bottom = 20.0
+hint_tooltip = "Modify Alpha Channel"
+mouse_default_cursor_shape = 2
+toggle_mode = true
+text = "A"
+
+[node name="OptionsContainer" type="HBoxContainer" parent="VBoxContainer"]
+margin_top = 228.0
+margin_right = 263.0
+margin_bottom = 252.0
+
+[node name="SelectionCheckBox" type="CheckBox" parent="VBoxContainer/OptionsContainer"]
+margin_right = 160.0
+margin_bottom = 24.0
+mouse_default_cursor_shape = 2
+pressed = true
+text = "Only affect selection"
+
+[node name="AffectOptionButton" type="OptionButton" parent="VBoxContainer/OptionsContainer"]
+margin_left = 164.0
+margin_right = 263.0
+margin_bottom = 24.0
+mouse_default_cursor_shape = 2
+text = "Current cel"
+items = [ "Current cel", null, false, 0, null, "Current frame", null, false, 1, null, "All frames", null, false, 2, null, "All projects", null, false, 3, null ]
+selected = 0
+[connection signal="about_to_show" from="." to="." method="_on_FlipImageDialog_about_to_show"]
+[connection signal="confirmed" from="." to="." method="_on_FlipImageDialog_confirmed"]
+[connection signal="popup_hide" from="." to="." method="_on_FlipImageDialog_popup_hide"]
+[connection signal="toggled" from="VBoxContainer/RGBAContainer/RButton" to="." method="_on_RButton_toggled"]
+[connection signal="toggled" from="VBoxContainer/RGBAContainer/GButton" to="." method="_on_GButton_toggled"]
+[connection signal="toggled" from="VBoxContainer/RGBAContainer/BButton" to="." method="_on_BButton_toggled"]
+[connection signal="toggled" from="VBoxContainer/RGBAContainer/AButton" to="." method="_on_AButton_toggled"]
+[connection signal="toggled" from="VBoxContainer/OptionsContainer/SelectionCheckBox" to="." method="_on_SelectionCheckBox_toggled"]
+[connection signal="item_selected" from="VBoxContainer/OptionsContainer/AffectOptionButton" to="." method="_on_AffectOptionButton_item_selected"]

src/UI/TopMenuContainer.gd

@@ -318,7 +318,8 @@ func image_menu_id_pressed(id : int) -> void:
 			show_rotate_image_popup()
 
 		5: # Invert Colors
-			DrawingAlgos.invert_image_colors(image)
+			Global.control.get_node("Dialogs/ImageEffects/InvertColorsDialog").popup_centered()
+			Global.dialog_open(true)
 
 		6: # Desaturation
 			DrawingAlgos.desaturate_image(image)