Cleaned up PaintNode resize notifications. Also now PaintCanvas allocates and resizes it's internal images properly.

modules/paint/nodes/paint_canvas.cpp

@@ -176,70 +176,71 @@ void PaintCanvas::clear() {
 
 void PaintCanvas::clear_preview() {
 	_preview_image->fill(Color(1.00, 1.00, 1.00, 0.00));
-
 	_preview_image_texture->create_from_image(_preview_image, 0);
 }
 
 void PaintCanvas::update_textures() {
-	_image_texture->create_from_image(_image, 0);
-	_preview_image_texture->create_from_image(_preview_image, 0);
+	if (!_image->empty()) {
+		_image_texture->create_from_image(_image, 0);
+	}
+
+	if (!_preview_image->empty()) {
+		_preview_image_texture->create_from_image(_preview_image, 0);
+	}
 
 	update();
 }
 
-void PaintCanvas::resize(int width, int height) {
-	if (get_size().x == width && get_size().y == height) {
+void PaintCanvas::resize_crop(int width, int height) {
+	Vector2i size = get_size();
+
+	if (size.x == width && size.y == height) {
 		return;
 	}
 
-	if (width < 0) {
-		width = 1;
+	if (width <= 0 || height <= 0) {
+		_image->clear();
+		_preview_image->clear();
+
+		update_textures();
+
+		set_size(Vector2i(width, height));
+
+		return;
 	}
 
-	if (height < 0) {
-		height = 1;
-	}
-
-	set_size(Vector2i(width, height));
-
-	resize_image(_image);
-	resize_image(_preview_image);
+	_image->crop(width, height);
+	_preview_image->crop(width, height);
 
 	update_textures();
+
+	set_size(Vector2i(width, height));
 }
 
-void PaintCanvas::resize_image(Ref<Image> image) {
-	ERR_FAIL_COND(!image.is_valid());
+void PaintCanvas::resize_interpolate(const int width, const int height, Image::Interpolation p_interpolation) {
+	Vector2i size = get_size();
 
-	PoolColorArray pixel_colors;
-	int prev_width = image->get_size().x;
-	int prev_height = image->get_size().y;
-
-	if (prev_width != 0 && prev_height != 0) {
-		image->lock();
-		for (int y = 0; y < prev_height; ++y) {
-			for (int x = 0; x < prev_width; ++x) {
-				pixel_colors.append(image->get_pixel(x, y));
-			}
-		}
-		image->unlock();
+	if (size.x == width && size.y == height) {
+		return;
 	}
 
-	image->create(get_size().x, get_size().y, false, Image::FORMAT_RGBA8);
+	if (width <= 0 || height <= 0) {
+		_image->clear();
+		_preview_image->clear();
 
-	image->lock();
+		update_textures();
 
-	for (int x = 0; x < prev_width; ++x) {
-		for (int y = 0; y < prev_height; ++y) {
-			if (x >= get_size().x || y >= get_size().y) {
-				continue;
-			}
+		set_size(Vector2i(width, height));
 
-			image->set_pixel(x, y, pixel_colors[PaintUtilities::to_1D(x, y, prev_width)]);
-		}
+		return;
 	}
 
-	image->unlock();
+	_image->resize(width, height, p_interpolation);
+	_preview_image->resize(width, height, p_interpolation);
+
+	update_textures();
+
+	set_size(Vector2i(width, height));
 }
 
 PoolVector2iArray PaintCanvas::select_color(const int p_x, const int p_y) {
@@ -871,13 +872,39 @@ PaintCanvas::PaintCanvas() {
 PaintCanvas::~PaintCanvas() {
 }
 
+void PaintCanvas::_on_size_changed() {
+	Vector2i size = get_size();
+
+	if (size.x <= 0 || size.y <= 0) {
+		_image->clear();
+		_preview_image->clear();
+
+		update_textures();
+
+		return;
+	}
+
+	if (_image->empty()) {
+		_image->create(size.x, size.y, false, Image::FORMAT_RGBA8);
+	} else {
+		_image->crop(size.x, size.y);
+	}
+
+	if (_preview_image->empty()) {
+		_preview_image->create(size.x, size.y, false, Image::FORMAT_RGBA8);
+	} else {
+		_preview_image->crop(size.x, size.y);
+	}
+
+	update_textures();
+}
+
 void PaintCanvas::_notification(int p_what) {
 	switch (p_what) {
+		case NOTIFICATION_POSTINITIALIZE: {
+			connect("size_changed", this, "_on_size_changed");
+		} break;
 		case NOTIFICATION_READY: {
-			//temp
-			resize(1, 1);
-			resize(128, 128);
-
 			if (!is_connected("current_tool_changed", this, "_on_tool_changed")) {
 				connect("current_tool_changed", this, "_on_tool_changed");
 			}
@@ -885,8 +912,13 @@ void PaintCanvas::_notification(int p_what) {
 			_on_tool_changed();
 		} break;
 		case NOTIFICATION_DRAW: {
-			draw_texture(_image_texture, Point2());
-			draw_texture(_preview_image_texture, Point2());
+			if (!_image->empty()) {
+				draw_texture(_image_texture, Point2());
+			}
+
+			if (!_preview_image->empty()) {
+				draw_texture(_preview_image_texture, Point2());
+			}
 		} break;
 	}
 }
@@ -943,8 +975,8 @@ void PaintCanvas::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("clear_preview"), &PaintCanvas::clear_preview);
 	ClassDB::bind_method(D_METHOD("update_textures"), &PaintCanvas::update_textures);
 
-	ClassDB::bind_method(D_METHOD("resize", "width", "height"), &PaintCanvas::resize);
-	ClassDB::bind_method(D_METHOD("resize_image", "image"), &PaintCanvas::resize_image);
+	ClassDB::bind_method(D_METHOD("resize_crop", "width", "height"), &PaintCanvas::resize_crop);
+	ClassDB::bind_method(D_METHOD("resize_interpolate", "width", "height", "interpolation"), &PaintCanvas::resize_interpolate, Image::INTERPOLATE_BILINEAR);
 
 	ClassDB::bind_method(D_METHOD("select_color", "x", "y"), &PaintCanvas::select_color);
 	ClassDB::bind_method(D_METHOD("select_same_color", "x", "y"), &PaintCanvas::select_same_color);
@@ -972,6 +1004,8 @@ void PaintCanvas::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("_on_tool_changed"), &PaintCanvas::_on_tool_changed);
 	ClassDB::bind_method(D_METHOD("tool_process", "local_position", "event"), &PaintCanvas::tool_process);
 
+	ClassDB::bind_method(D_METHOD("_on_size_changed"), &PaintCanvas::_on_size_changed);
+
 	BIND_ENUM_CONSTANT(TOOL_PENCIL);
 	BIND_ENUM_CONSTANT(TOOL_BRUSH);
 	BIND_ENUM_CONSTANT(TOOL_BUCKET);

modules/paint/nodes/paint_canvas.h

@@ -69,8 +69,8 @@ public:
 	void clear_preview();
 	void update_textures();
 
-	void resize(const int width, const int height);
-	void resize_image(Ref<Image> image);
+	void resize_crop(const int width, const int height);
+	void resize_interpolate(const int width, const int height, Image::Interpolation p_interpolation = Image::INTERPOLATE_BILINEAR);
 
 	PoolVector2iArray select_color(const int p_x, const int p_y);
 	PoolVector2iArray select_same_color(const int p_x, const int p_y);
@@ -108,6 +108,8 @@ public:
 	~PaintCanvas();
 
 protected:
+	void _on_size_changed();
+
 	void _notification(int p_what);
 
 	static void _bind_methods();

modules/paint/nodes/paint_node.cpp

@@ -7,12 +7,15 @@ Vector2i PaintNode::get_size() {
 	return _size;
 }
 void PaintNode::set_size(const Vector2i &size) {
+	if (size == _size) {
+		return;
+	}
+
 	_size = size;
 
-	if (is_inside_tree()) {
-		_propagate_notification_resized();
-		update();
-	}
+	emit_signal("size_changed");
+	_propagate_notification_resized();
+	update();
 }
 
 bool PaintNode::get_draw_outline() {
@@ -21,9 +24,7 @@ bool PaintNode::get_draw_outline() {
 void PaintNode::set_draw_outline(const bool val) {
 	_draw_outline = val;
 
-	if (is_inside_tree()) {
-		update();
-	}
+	update();
 }
 
 void PaintNode::save_image() {
@@ -88,6 +89,26 @@ PaintProject *PaintNode::get_paint_project() {
 	return NULL;
 }
 
+PaintNode *PaintNode::get_parent_paint_node() {
+	return Object::cast_to<PaintNode>(get_parent());
+}
+
+PaintNode *PaintNode::find_parent_paint_node() {
+	Node *p = get_parent();
+
+	while (p) {
+		PaintNode *pn = Object::cast_to<PaintNode>(p);
+
+		if (pn) {
+			return pn;
+		}
+
+		p = Object::cast_to<PaintNode>(p->get_parent());
+	}
+
+	return NULL;
+}
+
 String PaintNode::get_configuration_warning() const {
 	const PaintNode *p = this;
 
@@ -105,13 +126,14 @@ String PaintNode::get_configuration_warning() const {
 }
 
 void PaintNode::_propagate_notification_resized() {
-	notification(NOTIFICATION_PAINT_NODE_RESIZED);
+	//Only send it to children
+	//So if they don't resize themselves, the notification stops
 
 	for (int i = 0; i < get_child_count(); ++i) {
 		PaintNode *pn = Object::cast_to<PaintNode>(get_child(i));
 
 		if (pn) {
-			pn->_propagate_notification_resized();
+			pn->notification(NOTIFICATION_PARENT_PAINT_NODE_RESIZED);
 		}
 	}
 }
@@ -148,6 +170,15 @@ PaintNode::~PaintNode() {
 
 void PaintNode::_notification(int p_what) {
 	switch (p_what) {
+		case NOTIFICATION_POST_ENTER_TREE: {
+			if (get_size() == Vector2i(0, 0)) {
+				PaintNode *pn = get_parent_paint_node();
+
+				if (pn) {
+					set_size(pn->get_size());
+				}
+			}
+		} break;
 		case NOTIFICATION_DRAW: {
 			if (_draw_outline) {
 				draw_line(Point2(0, 0), Point2(_size.x, 0), Color(0, 0, 0, 1));
@@ -162,6 +193,8 @@ void PaintNode::_notification(int p_what) {
 }
 
 void PaintNode::_bind_methods() {
+	ADD_SIGNAL(MethodInfo("size_changed"));
+
 	ClassDB::bind_method(D_METHOD("get_size"), &PaintNode::get_size);
 	ClassDB::bind_method(D_METHOD("set_size", "size"), &PaintNode::set_size);
 	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2I, "size"), "set_size", "get_size");
@@ -193,8 +226,10 @@ void PaintNode::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("_forward_canvas_gui_input", "event"), &PaintNode::_forward_canvas_gui_input);
 
 	ClassDB::bind_method(D_METHOD("get_paint_project"), &PaintNode::get_paint_project);
+	ClassDB::bind_method(D_METHOD("get_parent_paint_node"), &PaintNode::get_parent_paint_node);
+	ClassDB::bind_method(D_METHOD("find_parent_paint_node"), &PaintNode::find_parent_paint_node);
 
-	BIND_CONSTANT(NOTIFICATION_PAINT_NODE_RESIZED);
+	BIND_CONSTANT(NOTIFICATION_PARENT_PAINT_NODE_RESIZED);
 	BIND_CONSTANT(NOTIFICATION_PAINT_PROJECT_PRE_SAVE);
 	BIND_CONSTANT(NOTIFICATION_PAINT_PROJECT_POST_SAVE);
 }

modules/paint/nodes/paint_node.h

@@ -12,7 +12,7 @@ class PaintNode : public Node2D {
 
 public:
 	enum {
-		NOTIFICATION_PAINT_NODE_RESIZED = 2500,
+		NOTIFICATION_PARENT_PAINT_NODE_RESIZED = 2500,
 		NOTIFICATION_PAINT_PROJECT_PRE_SAVE = 2501,
 		NOTIFICATION_PAINT_PROJECT_POST_SAVE = 2502,
 	};
@@ -43,10 +43,12 @@ public:
 	virtual bool _forward_canvas_gui_input(const Ref<InputEvent> &p_event);
 
 	PaintProject *get_paint_project();
+	PaintNode *get_parent_paint_node();
+	PaintNode *find_parent_paint_node();
 
 	String get_configuration_warning() const;
 
-	virtual void _propagate_notification_resized();
+	void _propagate_notification_resized();
 	void _propagate_notification_project_pre_save();
 	void _propagate_notification_project_post_save();
 

modules/paint/nodes/paint_project.cpp

@@ -92,9 +92,6 @@ void PaintProject::add_paint_visual_grid() {
 	}
 }
 
-void PaintProject::_propagate_notification_resized() {
-}
-
 PaintProject::PaintProject() {
 	_current_color = Color(1, 1, 1, 1);
 }

modules/paint/nodes/paint_project.h

@@ -31,8 +31,6 @@ public:
 	void add_paint_canvas_backgorund();
 	void add_paint_visual_grid();
 
-	void _propagate_notification_resized();
-
 	PaintProject();
 	~PaintProject();
 

modules/paint/ui/paint_canvas_background.cpp

@@ -82,7 +82,7 @@ PaintCanvasBackground::~PaintCanvasBackground() {
 void PaintCanvasBackground::_notification(int p_what) {
 	switch (p_what) {
 		case NOTIFICATION_ENTER_TREE:
-		case PaintNode::NOTIFICATION_PAINT_NODE_RESIZED: {
+		case PaintNode::NOTIFICATION_PARENT_PAINT_NODE_RESIZED: {
 			PaintNode *pn = get_paint_node();
 
 			if (pn) {

modules/paint/ui/paint_visual_grid.cpp

@@ -61,7 +61,7 @@ PaintNode *PaintVisualGrid::get_paint_node() {
 void PaintVisualGrid::_notification(int p_what) {
 	switch (p_what) {
 		case NOTIFICATION_ENTER_TREE:
-		case PaintNode::NOTIFICATION_PAINT_NODE_RESIZED: {
+		case PaintNode::NOTIFICATION_PARENT_PAINT_NODE_RESIZED: {
 			PaintNode *pn = get_paint_node();
 
 			if (pn) {