C++ VisualServer::canvas_item_add_texture_rect方法代码示例

	RID _add_body(Physics2DServer::ShapeType p_shape, const Matrix32& p_xform) {

		VisualServer *vs = VisualServer::get_singleton();
		Physics2DServer *ps = Physics2DServer::get_singleton();

		RID body = ps->body_create();
		ps->body_add_shape(body,body_shape_data[p_shape].shape);
		ps->body_set_space(body,space);
		ps->body_set_continuous_collision_detection_mode(body,Physics2DServer::CCD_MODE_CAST_SHAPE);
		ps->body_set_state(body,Physics2DServer::BODY_STATE_TRANSFORM,p_xform);

//		print_line("add body with xform: "+p_xform);
		RID sprite = vs->canvas_item_create();
		vs->canvas_item_set_parent(sprite,canvas);
		vs->canvas_item_set_transform(sprite,p_xform);
		Size2 imgsize( vs->texture_get_width(body_shape_data[p_shape].image),vs->texture_get_height(body_shape_data[p_shape].image) );
		vs->canvas_item_add_texture_rect(sprite,Rect2(-imgsize/2.0,imgsize),body_shape_data[p_shape].image);

		ps->body_set_force_integration_callback(body,this,"_body_moved",sprite);
//		RID q = ps->query_create(this,"_body_moved",sprite);
//		ps->query_body_state(q,body);

		return body;
	}

void ScrollBar::_notification(int p_what) {

	if (p_what == NOTIFICATION_DRAW) {

		RID ci = get_canvas_item();

		Ref<Texture> decr = highlight == HIGHLIGHT_DECR ? get_icon("decrement_highlight") : get_icon("decrement");
		Ref<Texture> incr = highlight == HIGHLIGHT_INCR ? get_icon("increment_highlight") : get_icon("increment");
		Ref<StyleBox> bg = has_focus() ? get_stylebox("scroll_focus") : get_stylebox("scroll");

		Ref<StyleBox> grabber;
		if (drag.active)
			grabber = get_stylebox("grabber_pressed");
		else if (highlight == HIGHLIGHT_RANGE)
			grabber = get_stylebox("grabber_highlight");
		else
			grabber = get_stylebox("grabber");

		Point2 ofs;

		VisualServer *vs = VisualServer::get_singleton();

		vs->canvas_item_add_texture_rect(ci, Rect2(Point2(), decr->get_size()), decr->get_rid());

		if (orientation == HORIZONTAL)
			ofs.x += decr->get_width();
		else
			ofs.y += decr->get_height();

		Size2 area = get_size();

		if (orientation == HORIZONTAL)
			area.width -= incr->get_width() + decr->get_width();
		else
			area.height -= incr->get_height() + decr->get_height();

		bg->draw(ci, Rect2(ofs, area));

		if (orientation == HORIZONTAL)
			ofs.width += area.width;
		else
			ofs.height += area.height;

		vs->canvas_item_add_texture_rect(ci, Rect2(ofs, decr->get_size()), incr->get_rid());
		Rect2 grabber_rect;

		if (orientation == HORIZONTAL) {

			grabber_rect.size.width = get_grabber_size();
			grabber_rect.size.height = get_size().height;
			grabber_rect.position.y = 0;
			grabber_rect.position.x = get_grabber_offset() + decr->get_width() + bg->get_margin(MARGIN_LEFT);
		} else {

			grabber_rect.size.width = get_size().width;
			grabber_rect.size.height = get_grabber_size();
			grabber_rect.position.y = get_grabber_offset() + decr->get_height() + bg->get_margin(MARGIN_TOP);
			grabber_rect.position.x = 0;
		}

		grabber->draw(ci, grabber_rect);
	}

	if (p_what == NOTIFICATION_ENTER_TREE) {

		if (has_node(drag_slave_path)) {
			Node *n = get_node(drag_slave_path);
			drag_slave = n->cast_to<Control>();
		}

		if (drag_slave) {
			drag_slave->connect("gui_input", this, "_drag_slave_input");
			drag_slave->connect("tree_exited", this, "_drag_slave_exit", varray(), CONNECT_ONESHOT);
		}
	}
	if (p_what == NOTIFICATION_EXIT_TREE) {

		if (drag_slave) {
			drag_slave->disconnect("gui_input", this, "_drag_slave_input");
			drag_slave->disconnect("tree_exited", this, "_drag_slave_exit");
		}

		drag_slave = NULL;
	}

	if (p_what == NOTIFICATION_FIXED_PROCESS) {

		if (scrolling) {
			if (get_value() != target_scroll) {
				double target = target_scroll - get_value();
				double dist = sqrt(target * target);
				double vel = ((target / dist) * 500) * get_fixed_process_delta_time();

				if (vel >= dist) {
					set_value(target_scroll);
				} else {
					set_value(get_value() + vel);
				}
			} else {
				scrolling = false;
//.........这里部分代码省略.........