C++ GraphNode::connect方法代码示例

void Graph::inset(long key) {
  srand(time(NULL));
  GraphNode *n = new GraphNode(key);
  nodes[numOfNodes] = n;
  int connectCount = 0;
  int connectSpot;
  int connectedSpot[5];
  bool alreadyConnected = false;
  for(int i = 0; i < 5; i++) connectedSpot[i] = -1;
  if(numOfNodes <= 5) {
    for(int i = 0; i < numOfNodes; i++) {
      nodes[i]->connect(n);
      n->connect(nodes[i]);
    }
  }
  else {
    while(connectCount <= 4) {
      connectSpot = rand() % numOfNodes;
      for(int i = 0; i < connectCount; i++)
        if(connectedSpot[i] == connectSpot) alreadyConnected = true;
      if(!alreadyConnected) {
        nodes[connectSpot]->connect(n);
	n->connect(nodes[connectSpot]);
	connectedSpot[connectCount] = connectSpot;
	connectCount++;
      }
      alreadyConnected = false;
    }
  }
  numOfNodes++;
  if(numOfNodes == capacity) doubleNodes();
  //connect();
}

void GraphEdit::add_child_notify(Node *p_child) {

	Control::add_child_notify(p_child);

	top_layer->call_deferred("raise"); //top layer always on top!
	GraphNode *gn = Object::cast_to<GraphNode>(p_child);
	if (gn) {
		gn->set_scale(Vector2(zoom, zoom));
		gn->connect("offset_changed", this, "_graph_node_moved", varray(gn));
		gn->connect("raise_request", this, "_graph_node_raised", varray(gn));
		gn->connect("item_rect_changed", connections_layer, "update");
		_graph_node_moved(gn);
		gn->set_mouse_filter(MOUSE_FILTER_PASS);
	}
}

void GraphEdit::add_child_notify(Node *p_child) {

	top_layer->call_deferred("raise"); //top layer always on top!
	GraphNode *gn = p_child->cast_to<GraphNode>();
	if (gn) {
		gn->connect("offset_changed",this,"_graph_node_moved",varray(gn));
		gn->connect("raise_request",this,"_graph_node_raised",varray(gn));
		_graph_node_moved(gn);
		gn->set_stop_mouse(false);
	}
}

void VisualShaderEditor::_update_graph() {

	if (updating)
		return;

	if (visual_shader.is_null())
		return;

	graph->set_scroll_ofs(visual_shader->get_graph_offset() * EDSCALE);

	VisualShader::Type type = VisualShader::Type(edit_type->get_selected());
	graph->clear_connections();
	//erase all nodes
	for (int i = 0; i < graph->get_child_count(); i++) {

		if (Object::cast_to<GraphNode>(graph->get_child(i))) {
			memdelete(graph->get_child(i));
			i--;
		}
	}

	static const Color type_color[3] = {
		Color::html("#61daf4"),
		Color::html("#d67dee"),
		Color::html("#f6a86e")
	};

	List<VisualShader::Connection> connections;
	visual_shader->get_node_connections(type, &connections);

	Ref<StyleBoxEmpty> label_style = make_empty_stylebox(2, 1, 2, 1);

	Vector<int> nodes = visual_shader->get_node_list(type);

	for (int n_i = 0; n_i < nodes.size(); n_i++) {

		Vector2 position = visual_shader->get_node_position(type, nodes[n_i]);
		Ref<VisualShaderNode> vsnode = visual_shader->get_node(type, nodes[n_i]);

		GraphNode *node = memnew(GraphNode);
		graph->add_child(node);

		/*if (!vsnode->is_connected("changed", this, "_node_changed")) {
			vsnode->connect("changed", this, "_node_changed", varray(vsnode->get_instance_id()), CONNECT_DEFERRED);
		}*/

		node->set_offset(position);

		node->set_title(vsnode->get_caption());
		node->set_name(itos(nodes[n_i]));

		if (nodes[n_i] >= 2) {
			node->set_show_close_button(true);
			node->connect("close_request", this, "_delete_request", varray(nodes[n_i]), CONNECT_DEFERRED);
		}

		node->connect("dragged", this, "_node_dragged", varray(nodes[n_i]));

		Control *custom_editor = NULL;
		int port_offset = 0;

		Ref<VisualShaderNodeUniform> uniform = vsnode;
		if (uniform.is_valid()) {
			LineEdit *uniform_name = memnew(LineEdit);
			uniform_name->set_text(uniform->get_uniform_name());
			node->add_child(uniform_name);
			uniform_name->connect("text_entered", this, "_line_edit_changed", varray(uniform_name, nodes[n_i]));
			uniform_name->connect("focus_exited", this, "_line_edit_focus_out", varray(uniform_name, nodes[n_i]));

			if (vsnode->get_input_port_count() == 0 && vsnode->get_output_port_count() == 1 && vsnode->get_output_port_name(0) == "") {
				//shortcut
				VisualShaderNode::PortType port_right = vsnode->get_output_port_type(0);
				node->set_slot(0, false, VisualShaderNode::PORT_TYPE_SCALAR, Color(), true, port_right, type_color[port_right]);
				continue;
			}
			port_offset++;
		}

		for (int i = 0; i < plugins.size(); i++) {
			custom_editor = plugins.write[i]->create_editor(vsnode);
			if (custom_editor) {
				break;
			}
		}

		if (custom_editor && vsnode->get_output_port_count() > 0 && vsnode->get_output_port_name(0) == "" && (vsnode->get_input_port_count() == 0 || vsnode->get_input_port_name(0) == "")) {
			//will be embedded in first port
		} else if (custom_editor) {
			port_offset++;
			node->add_child(custom_editor);
			custom_editor = NULL;
		}

		for (int i = 0; i < MAX(vsnode->get_input_port_count(), vsnode->get_output_port_count()); i++) {

			if (vsnode->is_port_separator(i)) {
				node->add_child(memnew(HSeparator));
				port_offset++;
			}

//.........这里部分代码省略.........

void AnimationNodeBlendTreeEditor::_update_graph() {

	if (updating)
		return;

	graph->set_scroll_ofs(blend_tree->get_graph_offset() * EDSCALE);

	if (blend_tree->get_parent().is_valid()) {
		goto_parent->show();
	} else {
		goto_parent->hide();
	}
	graph->clear_connections();
	//erase all nodes
	for (int i = 0; i < graph->get_child_count(); i++) {

		if (Object::cast_to<GraphNode>(graph->get_child(i))) {
			memdelete(graph->get_child(i));
			i--;
		}
	}

	animations.clear();

	List<StringName> nodes;
	blend_tree->get_node_list(&nodes);

	for (List<StringName>::Element *E = nodes.front(); E; E = E->next()) {

		GraphNode *node = memnew(GraphNode);
		graph->add_child(node);

		Ref<AnimationNode> agnode = blend_tree->get_node(E->get());

		if (!agnode->is_connected("changed", this, "_node_changed")) {
			agnode->connect("changed", this, "_node_changed", varray(agnode->get_instance_id()), CONNECT_DEFERRED);
		}

		node->set_offset(agnode->get_position() * EDSCALE);

		node->set_title(agnode->get_caption());
		node->set_name(E->get());

		int base = 0;
		if (String(E->get()) != "output") {
			LineEdit *name = memnew(LineEdit);
			name->set_text(E->get());
			name->set_expand_to_text_length(true);
			node->add_child(name);
			node->set_slot(0, false, 0, Color(), true, 0, get_color("font_color", "Label"));
			name->connect("text_entered", this, "_node_renamed", varray(agnode));
			name->connect("focus_exited", this, "_node_renamed_focus_out", varray(name, agnode));
			base = 1;
			node->set_show_close_button(true);
			node->connect("close_request", this, "_delete_request", varray(E->get()), CONNECT_DEFERRED);
		}

		for (int i = 0; i < agnode->get_input_count(); i++) {
			Label *in_name = memnew(Label);
			node->add_child(in_name);
			in_name->set_text(agnode->get_input_name(i));
			node->set_slot(base + i, true, 0, get_color("font_color", "Label"), false, 0, Color());
		}

		node->connect("dragged", this, "_node_dragged", varray(agnode));

		if (EditorNode::get_singleton()->item_has_editor(agnode.ptr())) {
			node->add_child(memnew(HSeparator));
			Button *open_in_editor = memnew(Button);
			open_in_editor->set_text(TTR("Open Editor"));
			open_in_editor->set_icon(get_icon("Edit", "EditorIcons"));
			node->add_child(open_in_editor);
			open_in_editor->connect("pressed", this, "_open_in_editor", varray(E->get()), CONNECT_DEFERRED);
			open_in_editor->set_h_size_flags(SIZE_SHRINK_CENTER);
		}

		if (agnode->has_filter()) {

			node->add_child(memnew(HSeparator));
			Button *edit_filters = memnew(Button);
			edit_filters->set_text(TTR("Edit Filters"));
			edit_filters->set_icon(get_icon("AnimationFilter", "EditorIcons"));
			node->add_child(edit_filters);
			edit_filters->connect("pressed", this, "_edit_filters", varray(E->get()), CONNECT_DEFERRED);
			edit_filters->set_h_size_flags(SIZE_SHRINK_CENTER);
		}

		Ref<AnimationNodeAnimation> anim = agnode;
		if (anim.is_valid()) {

			MenuButton *mb = memnew(MenuButton);
			mb->set_text(anim->get_animation());
			mb->set_icon(get_icon("Animation", "EditorIcons"));
			Array options;

			node->add_child(memnew(HSeparator));
			node->add_child(mb);

			ProgressBar *pb = memnew(ProgressBar);

//.........这里部分代码省略.........