Improved the Paste tag system

src/UI/Timeline/AnimationTimeline.gd

@@ -349,9 +349,12 @@ func _on_CopyFrame_pressed() -> void:
 ## When [param destination] is -1, the new frames will be placed right next to the last frame in
 ## [param destination]. if [param select_all_cels] is [code]true[/code] then all of the new copied
 ## cels will be selected, otherwise only the cels corresponding to the original selected cels will
-## get selected.
+## get selected. if [param tag_name_from] holds an animation tag then a tag of it's name will be
+## created over the new frames.
 ## [br]Note: [param indices] must be in ascending order
-func copy_frames(indices := [], destination := -1, select_all_cels := true) -> void:
+func copy_frames(
+	indices := [], destination := -1, select_all_cels := true, tag_name_from: AnimationTag = null
+) -> void:
 	var project := Global.current_project
 
 	if indices.size() == 0:
@@ -423,12 +426,22 @@ func copy_frames(indices := [], destination := -1, select_all_cels := true) -> v
 						new_cel.selected = new_cel.get_object_from_id(selected_id)
 			new_frame.cels.append(new_cel)
 
-		for tag in new_animation_tags:  # Loop through the tags to see if the frame is in one
+		# After adding one frame, loop through the tags to see if the frame was in an animation tag
+		for tag in new_animation_tags:
 			if copied_indices[0] >= tag.from && copied_indices[0] <= tag.to:
 				tag.to += 1
 			elif copied_indices[0] < tag.from:
 				tag.from += 1
 				tag.to += 1
+	if tag_name_from:
+		new_animation_tags.append(
+			AnimationTag.new(
+				tag_name_from.name,
+				tag_name_from.color,
+				copied_indices[0] + 1,
+				copied_indices[-1] + 1
+			)
+		)
 	project.undo_redo.add_do_method(Global.undo_or_redo.bind(false))
 	project.undo_redo.add_undo_method(Global.undo_or_redo.bind(true))
 	# Note: temporarily set the selected cels to an empty array (needed for undo/redo)

src/UI/Timeline/AnimationTimeline.tscn

@@ -952,9 +952,63 @@ offset_bottom = 40.0
 mouse_filter = 2
 color = Color(0, 0.741176, 1, 0.501961)
 
-[node name="PasteTagPopup" type="PopupMenu" parent="."]
+[node name="PasteTagPopup" type="Popup" parent="."]
+size = Vector2i(250, 307)
+visible = true
+min_size = Vector2i(250, 0)
 script = ExtResource("12")
 
+[node name="PanelContainer" type="PanelContainer" parent="PasteTagPopup"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="VBoxContainer" type="VBoxContainer" parent="PasteTagPopup/PanelContainer"]
+layout_mode = 2
+
+[node name="Title" type="Label" parent="PasteTagPopup/PanelContainer/VBoxContainer"]
+layout_mode = 2
+theme_type_variation = &"HeaderSmall"
+text = "Import Tags"
+horizontal_alignment = 1
+
+[node name="HBoxContainer" type="HBoxContainer" parent="PasteTagPopup/PanelContainer/VBoxContainer"]
+layout_mode = 2
+
+[node name="Label" type="Label" parent="PasteTagPopup/PanelContainer/VBoxContainer/HBoxContainer"]
+layout_mode = 2
+text = "From: "
+
+[node name="ProjectList" type="OptionButton" parent="PasteTagPopup/PanelContainer/VBoxContainer/HBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+size_flags_horizontal = 3
+alignment = 1
+
+[node name="CreateTags" type="CheckButton" parent="PasteTagPopup/PanelContainer/VBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "Create new tags"
+
+[node name="Instructions" type="Label" parent="PasteTagPopup/PanelContainer/VBoxContainer"]
+layout_mode = 2
+text = "Available tags:"
+autowrap_mode = 3
+
+[node name="TagList" type="ItemList" parent="PasteTagPopup/PanelContainer/VBoxContainer"]
+unique_name_in_owner = true
+custom_minimum_size = Vector2(0, 150)
+layout_mode = 2
+size_flags_vertical = 3
+
+[node name="StartFrame" type="Label" parent="PasteTagPopup/PanelContainer/VBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+horizontal_alignment = 1
+autowrap_mode = 3
+
 [connection signal="pressed" from="TimelineContainer/TimelineButtons/LayerTools/LayerSettingsContainer/LayerButtons/AddLayer" to="." method="add_layer"]
 [connection signal="pressed" from="TimelineContainer/TimelineButtons/LayerTools/LayerSettingsContainer/LayerButtons/RemoveLayer" to="." method="_on_RemoveLayer_pressed"]
 [connection signal="pressed" from="TimelineContainer/TimelineButtons/LayerTools/LayerSettingsContainer/LayerButtons/MoveUpLayer" to="." method="change_layer_order" binds= [true]]

src/UI/Timeline/PasteTagPopup.gd

@@ -1,37 +1,237 @@
-extends PopupMenu
+extends Popup
 
-@onready var tag_container: Control = Global.animation_timeline.find_child("TagContainer")
+var from_project: Project
+var create_new_tags := false
+
+@onready var from_project_list: OptionButton = %ProjectList
+@onready var create_tags: CheckButton = %CreateTags
+@onready var animation_tags_list: ItemList = %TagList
+@onready var start_frame: Label = %StartFrame
 
 
 func _ready() -> void:
-	id_pressed.connect(_on_TagList_id_pressed)
-	tag_container.gui_input.connect(_on_TagContainer_gui_input)
+	var tag_container: Control = Global.animation_timeline.find_child("TagContainer")
+	# connect signals
+	tag_container.connect("gui_input", _on_TagContainer_gui_input)
+	from_project_list.connect("item_selected", _on_FromProject_changed)
+	animation_tags_list.connect("item_selected", _on_TagList_id_pressed)
+	create_tags.connect("toggled", _on_CreateTags_toggled)
+
+
+func refresh_list() -> void:
+	animation_tags_list.clear()
+	for tag in from_project.animation_tags:
+		var img = Image.create(5, 5, true, Image.FORMAT_RGBA8)
+		img.fill(tag.color)
+		var tex = ImageTexture.create_from_image(img)
+		var tag_title = tag.name
+		if tag_title == "":
+			tag_title = "(Untitled)"
+		animation_tags_list.add_item(tag_title, tex)
+
+
+func _on_CreateTags_toggled(pressed: bool) -> void:
+	create_new_tags = pressed
 
 
 func _on_TagContainer_gui_input(event: InputEvent) -> void:
 	if !event is InputEventMouseButton:
 		return
 	if Input.is_action_just_released("right_mouse"):
-		clear()
-		if Global.current_project.animation_tags.is_empty():
-			return
-		add_separator("Paste content from tag:")
-		for tag in Global.current_project.animation_tags:
-			var img := Image.create(5, 5, true, Image.FORMAT_RGBA8)
-			img.fill(tag.color)
-			var tex := ImageTexture.create_from_image(img)
-			var tag_name := tag.name
-			if tag_name == "":
-				tag_name = "(Untitled)"
-			add_icon_item(tex, tag_name)
+		# Reset UI
+		from_project_list.clear()
+		if Global.projects.find(from_project) < 0:
+			from_project = Global.current_project
+		# Populate project list
+		for project in Global.projects:
+			from_project_list.add_item(project.name)
+		from_project_list.select(Global.projects.find(from_project))
+		# Populate tag list
+		refresh_list()
 		var frame_idx := Global.current_project.current_frame + 2
-		add_separator(str("The pasted frames will start at (Frame ", frame_idx, ")"))
-		popup(Rect2i(tag_container.get_global_mouse_position(), Vector2.ONE))
+		start_frame.text = str("The pasted frames will start at (Frame ", frame_idx, ")")
+		popup(Rect2i(Global.control.get_global_mouse_position(), Vector2i.ONE))
+
+
+func _on_FromProject_changed(id: int) -> void:
+	from_project = Global.projects[id]
+	refresh_list()
 
 
 func _on_TagList_id_pressed(id: int) -> void:
-	var tag: AnimationTag = Global.current_project.animation_tags[id - 1]
+	var tag: AnimationTag = from_project.animation_tags[id]
 	var frames = []
 	for i in range(tag.from - 1, tag.to):
 		frames.append(i)
-	Global.animation_timeline.copy_frames(frames, Global.current_project.current_frame)
+	if create_new_tags:
+		add_animation(frames, Global.current_project.current_frame, tag)
+	else:
+		add_animation(frames, Global.current_project.current_frame)
+	hide()
+
+
+## Gets frame indices of [member from_project] and dumps it in the current project.
+func add_animation(indices: Array, destination: int, from_tag: AnimationTag = null):
+	var project: Project = Global.current_project
+	if from_project == project:  ## If we are copying tags within project
+		Global.animation_timeline.copy_frames(indices, destination, true, from_tag)
+		return
+	var new_animation_tags := project.animation_tags.duplicate()
+	# Loop through the tags to create new classes for them, so that they won't be the same
+	# as project.animation_tags's classes. Needed for undo/redo to work properly.
+	for i in new_animation_tags.size():
+		new_animation_tags[i] = AnimationTag.new(
+			new_animation_tags[i].name,
+			new_animation_tags[i].color,
+			new_animation_tags[i].from,
+			new_animation_tags[i].to
+		)
+	var imported_frames: Array[Frame] = []  # The copied frames
+	# the indices of newly copied frames
+	var copied_indices: PackedInt32Array = range(
+		destination + 1, (destination + 1) + indices.size()
+	)
+	project.undos += 1
+	project.undo_redo.create_action("Import Tag")
+	# Step 1: calculate layers to generate
+	var layer_to_names := PackedStringArray()  # names of currently existing layers
+	for l in project.layers:
+		layer_to_names.append(l.name)
+
+	# the goal of this section is to mark existing layers with their indices else with -1
+	var layer_from_to := {}  # indices of layers from and to
+	for from in from_project.layers.size():
+		var to = layer_to_names.find(from_project.layers[from].name)
+		if project.layers[to].get_layer_type() != from_project.layers[from].get_layer_type():
+			to = -1
+		if to in layer_from_to.values():  # from_project has layers with duplicate frames
+			to = -1
+		layer_from_to[from] = to
+
+	# Step 2: generate required layers
+	var combined_copy := Array()  # Makes calculations easy
+	combined_copy.append_array(project.layers)
+	var added_layers := Array()  # Array of layers
+	var added_idx := Array()  # Array of indices to add the respective layers (in added_layers) to
+	var added_cels := Array()  # Array of an Array of cels (added in same order as their layer)
+
+	if layer_from_to.values().count(-1) > 0:
+		# As it is extracted from a dictionary, so i assume the keys aren't sorted
+		var from_layers_size = layer_from_to.keys().duplicate(true)
+		from_layers_size.sort()  # it's values should now be from (layer size - 1) to zero
+		for i in from_layers_size:
+			if layer_from_to[i] == -1:
+				var type = from_project.layers[i].get_layer_type()
+				var l: BaseLayer
+				match type:
+					Global.LayerTypes.PIXEL:
+						l = PixelLayer.new(project)
+					Global.LayerTypes.GROUP:
+						l = GroupLayer.new(project)
+					Global.LayerTypes.THREE_D:
+						l = Layer3D.new(project)
+				var cels := []
+				for f in project.frames:
+					cels.append(l.new_empty_cel())
+				l.name = from_project.layers[i].name  # this will set it to the required layer name
+
+				# Set an appropriate parent
+				var new_layer_idx = combined_copy.size()
+				layer_from_to[i] = new_layer_idx
+				var from_children = from_project.layers[i].get_children(false)
+				for from_child in from_children:  # If this layer had children
+					var child_to_idx = layer_from_to[from_project.layers.find(from_child)]
+					var to_child = combined_copy[child_to_idx]
+					if to_child in added_layers:  # if child was added recently
+						to_child.parent = l
+
+				combined_copy.insert(new_layer_idx, l)
+				added_layers.append(l)  # layer is now added
+				added_idx.append(new_layer_idx)  # at index new_layer_idx
+				added_cels.append(cels)  # with cels
+
+	# Now initiate import
+	for f in indices:
+		var src_frame: Frame = from_project.frames[f]
+		var new_frame := Frame.new()
+		imported_frames.append(new_frame)
+		new_frame.duration = src_frame.duration
+		for to in combined_copy.size():
+			var new_cel: BaseCel
+			if to in layer_from_to.values():
+				var from = layer_from_to.find_key(to)
+				# Cel we're copying from, the source
+				var src_cel: BaseCel = from_project.frames[f].cels[from]
+				var selected_id := -1
+				if src_cel is Cel3D:
+					new_cel = src_cel.get_script().new(
+						project.size, false, src_cel.object_properties, src_cel.scene_properties
+					)
+					if src_cel.selected != null:
+						selected_id = src_cel.selected.id
+				else:
+					new_cel = src_cel.get_script().new()
+
+					# add more types here if they have a copy_content() method
+					if src_cel is PixelCel:
+						var src_img = src_cel.copy_content()
+						var copy := Image.create(
+							project.size.x, project.size.y, false, Image.FORMAT_RGBA8
+						)
+						copy.blit_rect(
+							src_img, Rect2(Vector2.ZERO, src_img.get_size()), Vector2.ZERO
+						)
+						new_cel.set_content(copy)
+					new_cel.opacity = src_cel.opacity
+
+					if new_cel is Cel3D:
+						if selected_id in new_cel.object_properties.keys():
+							if selected_id != -1:
+								new_cel.selected = new_cel.get_object_from_id(selected_id)
+			else:
+				new_cel = combined_copy[to].new_empty_cel()
+			new_frame.cels.append(new_cel)
+
+		for tag in new_animation_tags:  # Loop through the tags to see if the frame is in one
+			if copied_indices[0] >= tag.from && copied_indices[0] <= tag.to:
+				tag.to += 1
+			elif copied_indices[0] < tag.from:
+				tag.from += 1
+				tag.to += 1
+	if from_tag:
+		new_animation_tags.append(
+			AnimationTag.new(
+				from_tag.name, from_tag.color, copied_indices[0] + 1, copied_indices[-1] + 1
+			)
+		)
+	project.undo_redo.add_undo_method(project.remove_frames.bind(copied_indices))
+	project.undo_redo.add_do_method(project.add_layers.bind(added_layers, added_idx, added_cels))
+	project.undo_redo.add_do_method(project.add_frames.bind(imported_frames, copied_indices))
+	project.undo_redo.add_undo_method(project.remove_layers.bind(added_idx))
+	# Note: temporarily set the selected cels to an empty array (needed for undo/redo)
+	project.undo_redo.add_do_property(Global.current_project, "selected_cels", [])
+	project.undo_redo.add_undo_property(Global.current_project, "selected_cels", [])
+
+	var all_new_cels = []
+	# Select all the new frames so that it is easier to move/offset collectively if user wants
+	# To ease animation workflow, new current frame is the first copied frame instead of the last
+	var range_start: int = copied_indices[-1]
+	var range_end: int = copied_indices[0]
+	var frame_diff_sign := signi(range_end - range_start)
+	if frame_diff_sign == 0:
+		frame_diff_sign = 1
+	for i in range(range_start, range_end + frame_diff_sign, frame_diff_sign):
+		for j in range(0, combined_copy.size()):
+			var frame_layer := [i, j]
+			if !all_new_cels.has(frame_layer):
+				all_new_cels.append(frame_layer)
+	project.undo_redo.add_do_property(Global.current_project, "selected_cels", all_new_cels)
+	project.undo_redo.add_undo_method(
+		project.change_cel.bind(project.current_frame, project.current_layer)
+	)
+	project.undo_redo.add_do_method(project.change_cel.bind(range_end))
+	project.undo_redo.add_do_property(project, "animation_tags", new_animation_tags)
+	project.undo_redo.add_undo_property(project, "animation_tags", project.animation_tags)
+	project.undo_redo.add_do_method(Global.undo_or_redo.bind(false))
+	project.undo_redo.add_undo_method(Global.undo_or_redo.bind(true))
+	project.undo_redo.commit_action()