Add visibility to CanvasLayer

doc/classes/CanvasLayer.xml

@@ -44,5 +44,16 @@
 		<member name="transform" type="Transform2D" setter="set_transform" getter="get_transform" default="Transform2D(1, 0, 0, 1, 0, 0)">
 			The layer's transform.
 		</member>
+		<member name="visible" type="bool" setter="set_visible" getter="is_visible" default="true">
+			If [code]false[/code], any [CanvasItem] under this [CanvasLayer] will be hidden.
+			Unlike [member CanvasItem.visible], visibility of a [CanvasLayer] isn't propagated to underlying layers.
+		</member>
 	</members>
+	<signals>
+		<signal name="visibility_changed">
+			<description>
+				Emitted when visibility of the layer is changed. See [member visible].
+			</description>
+		</signal>
+	</signals>
 </class>

editor/scene_tree_editor.cpp

@@ -362,6 +362,17 @@ bool SceneTreeEditor::_add_nodes(Node *p_node, TreeItem *p_parent, bool p_scroll
 			}
 
 			_update_visibility_color(p_node, item);
+		} else if (p_node->is_class("CanvasLayer")) {
+			bool v = p_node->call("is_visible");
+			if (v) {
+				item->add_button(0, get_theme_icon("GuiVisibilityVisible", "EditorIcons"), BUTTON_VISIBILITY, false, TTR("Toggle Visibility"));
+			} else {
+				item->add_button(0, get_theme_icon("GuiVisibilityHidden", "EditorIcons"), BUTTON_VISIBILITY, false, TTR("Toggle Visibility"));
+			}
+
+			if (!p_node->is_connected("visibility_changed", callable_mp(this, &SceneTreeEditor::_node_visibility_changed))) {
+				p_node->connect("visibility_changed", callable_mp(this, &SceneTreeEditor::_node_visibility_changed), varray(p_node));
+			}
 		} else if (p_node->is_class("Node3D")) {
 			bool is_locked = p_node->has_meta("_edit_lock_");
 			if (is_locked) {
@@ -471,6 +482,9 @@ void SceneTreeEditor::_node_visibility_changed(Node *p_node) {
 	if (p_node->is_class("CanvasItem")) {
 		visible = p_node->call("is_visible");
 		CanvasItemEditor::get_singleton()->get_viewport_control()->update();
+	} else if (p_node->is_class("CanvasLayer")) {
+		visible = p_node->call("is_visible");
+		CanvasItemEditor::get_singleton()->get_viewport_control()->update();
 	} else if (p_node->is_class("Node3D")) {
 		visible = p_node->call("is_visible");
 	}
@@ -514,7 +528,7 @@ void SceneTreeEditor::_node_removed(Node *p_node) {
 		p_node->disconnect("script_changed", callable_mp(this, &SceneTreeEditor::_node_script_changed));
 	}
 
-	if (p_node->is_class("Node3D") || p_node->is_class("CanvasItem")) {
+	if (p_node->is_class("Node3D") || p_node->is_class("CanvasItem") || p_node->is_class("CanvasLayer")) {
 		if (p_node->is_connected("visibility_changed", callable_mp(this, &SceneTreeEditor::_node_visibility_changed))) {
 			p_node->disconnect("visibility_changed", callable_mp(this, &SceneTreeEditor::_node_visibility_changed));
 		}

scene/main/canvas_item.cpp

@@ -72,6 +72,15 @@ bool CanvasItem::is_visible_in_tree() const {
 		p = p->get_parent_item();
 	}
 
+	const Node *n = get_parent();
+	while (n) {
+		const CanvasLayer *c = Object::cast_to<CanvasLayer>(n);
+		if (c && !c->is_visible()) {
+			return false;
+		}
+		n = n->get_parent();
+	}
+
 	return true;
 }
 

scene/main/canvas_item.h

@@ -46,6 +46,8 @@ class World2D;
 class CanvasItem : public Node {
 	GDCLASS(CanvasItem, Node);
 
+	friend class CanvasLayer;
+
 public:
 	enum TextureFilter {
 		TEXTURE_FILTER_PARENT_NODE,

scene/main/canvas_layer.cpp

@@ -29,6 +29,7 @@
 /*************************************************************************/
 
 #include "canvas_layer.h"
+#include "canvas_item.h"
 #include "viewport.h"
 
 void CanvasLayer::set_layer(int p_xform) {
@@ -42,6 +43,32 @@ int CanvasLayer::get_layer() const {
 	return layer;
 }
 
+void CanvasLayer::set_visible(bool p_visible) {
+	if (p_visible == visible) {
+		return;
+	}
+
+	visible = p_visible;
+	emit_signal(SNAME("visibility_changed"));
+
+	for (int i = 0; i < get_child_count(); i++) {
+		CanvasItem *c = Object::cast_to<CanvasItem>(get_child(i));
+		if (c) {
+			RenderingServer::get_singleton()->canvas_item_set_visible(c->get_canvas_item(), p_visible && c->is_visible());
+
+			if (c->is_visible()) {
+				c->_propagate_visibility_changed(p_visible);
+			} else {
+				c->notification(CanvasItem::NOTIFICATION_VISIBILITY_CHANGED);
+			}
+		}
+	}
+}
+
+bool CanvasLayer::is_visible() const {
+	return visible;
+}
+
 void CanvasLayer::set_transform(const Transform2D &p_xform) {
 	transform = p_xform;
 	locrotscale_dirty = true;
@@ -264,6 +291,9 @@ void CanvasLayer::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_layer", "layer"), &CanvasLayer::set_layer);
 	ClassDB::bind_method(D_METHOD("get_layer"), &CanvasLayer::get_layer);
 
+	ClassDB::bind_method(D_METHOD("set_visible", "visible"), &CanvasLayer::set_visible);
+	ClassDB::bind_method(D_METHOD("is_visible"), &CanvasLayer::is_visible);
+
 	ClassDB::bind_method(D_METHOD("set_transform", "transform"), &CanvasLayer::set_transform);
 	ClassDB::bind_method(D_METHOD("get_transform"), &CanvasLayer::get_transform);
 
@@ -289,6 +319,7 @@ void CanvasLayer::_bind_methods() {
 
 	ADD_GROUP("Layer", "");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "layer", PROPERTY_HINT_RANGE, "-128,128,1"), "set_layer", "get_layer");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "visible"), "set_visible", "is_visible");
 	ADD_GROUP("Transform", "");
 	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "offset"), "set_offset", "get_offset");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "rotation", PROPERTY_HINT_RANGE, "-1080,1080,0.1,or_lesser,or_greater,radians"), "set_rotation", "get_rotation");
@@ -299,6 +330,8 @@ void CanvasLayer::_bind_methods() {
 	ADD_GROUP("Follow Viewport", "follow_viewport");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "follow_viewport_enable"), "set_follow_viewport", "is_following_viewport");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "follow_viewport_scale", PROPERTY_HINT_RANGE, "0.001,1000,0.001,or_greater,or_lesser"), "set_follow_viewport_scale", "get_follow_viewport_scale");
+
+	ADD_SIGNAL(MethodInfo("visibility_changed"));
 }
 
 CanvasLayer::CanvasLayer() {

scene/main/canvas_layer.h

@@ -52,6 +52,7 @@ class CanvasLayer : public Node {
 	Viewport *vp = nullptr;
 
 	int sort_index = 0;
+	bool visible = true;
 
 	bool follow_viewport = false;
 	float follow_viewport_scale = 1.0;
@@ -69,6 +70,9 @@ public:
 	void set_layer(int p_xform);
 	int get_layer() const;
 
+	void set_visible(bool p_visible);
+	bool is_visible() const;
+
 	void set_transform(const Transform2D &p_xform);
 	Transform2D get_transform() const;