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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
'use strict';
/**
* Custom version of chrome://resources/css/tree.css.js, adding support for
* inverted arrow icons.
*/
(function() {
/**
* @type {number}
* @const
*/
var WIDTH = 14;
/**
* @type {number}
* @const
*/
var HEIGHT = WIDTH / 2 + 2;
/**
* @type {number}
* @const
*/
var MARGIN = 1;
/**
* @param {string} name CSS canvas identifier.
* @param {string} backgroundColor Background color.
* @param {string} strokeColor Outline color.
*/
function prepareTriangle(name, backgroundColor, strokeColor) {
var ctx = document.getCSSCanvasContext('2d',
name,
WIDTH + MARGIN * 2,
HEIGHT + MARGIN * 2);
ctx.fillStyle = backgroundColor;
ctx.strokeStyle = strokeColor;
ctx.translate(MARGIN, MARGIN);
ctx.beginPath();
ctx.moveTo(0, 0);
ctx.lineTo(0, 2);
ctx.lineTo(WIDTH / 2, HEIGHT);
ctx.lineTo(WIDTH, 2);
ctx.lineTo(WIDTH, 0);
ctx.closePath();
ctx.fill();
ctx.stroke();
}
prepareTriangle(
'tree-triangle', 'rgba(122, 122, 122, 0.6)', 'rgba(0, 0, 0, 0.6)');
prepareTriangle('tree-triangle-inverted', '#ffffff', '#ffffff');
})();
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