scratch-blocks/core/ui_menu_utils.js

68 lines
2.3 KiB
JavaScript

/**
* @license
* Visual Blocks Editor
*
* Copyright 2017 Google Inc.
* https://developers.google.com/blockly/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Utility methods for working with the closure menu (goog.ui.menu).
* @author fenichel@google.com (Rachel Fenichel)
*/
'use strict';
/**
* @name Blockly.utils.uiMenu
* @namespace
**/
goog.provide('Blockly.utils.uiMenu');
/**
* Get the size of a rendered goog.ui.Menu.
* @param {!goog.ui.Menu} menu The menu to measure.
* @return {!goog.math.Size} Object with width and height properties.
* @package
*/
Blockly.utils.uiMenu.getSize = function(menu) {
var menuDom = menu.getElement();
var menuSize = goog.style.getSize(menuDom);
// Recalculate height for the total content, not only box height.
menuSize.height = menuDom.scrollHeight;
return menuSize;
};
/**
* Adjust the bounding boxes used to position the widget div to deal with RTL
* goog.ui.Menu positioning. In RTL mode the menu renders down and to the left
* of its start point, instead of down and to the right. Adjusting all of the
* bounding boxes accordingly allows us to use the same code for all widgets.
* This function in-place modifies the provided bounding boxes.
* @param {!Object} viewportBBox The bounding rectangle of the current viewport,
* in window coordinates.
* @param {!Object} anchorBBox The bounding rectangle of the anchor, in window
* coordinates.
* @param {!goog.math.Size} menuSize The size of the menu that is inside the
* widget div, in window coordinates.
* @package
*/
Blockly.utils.uiMenu.adjustBBoxesForRTL = function(viewportBBox, anchorBBox,
menuSize) {
anchorBBox.left += menuSize.width;
anchorBBox.right += menuSize.width;
viewportBBox.left += menuSize.width;
viewportBBox.right += menuSize.width;
};