/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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var glob = require('glob');
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var Canvas = require('canvas');
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var echarts = require('echarts');
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var fs = require('fs');
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var path = require('path');
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require('echarts/map/js/china');
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var options = {
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bar: require('./option/bar'),
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area: require('./option/area'),
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scatter: require('./option/scatter'),
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pie: require('./option/pie'),
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graph: require('./option/graph'),
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map: require('./option/map')
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};
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var WIDTH = 600;
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var HEIGHT = 400;
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echarts.setCanvasCreator(function () {
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return createCanvas();
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});
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var font = new Canvas.Font('Helvetica', '/System/Library/Fonts/Helvetica.dfont');
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font.addFace('/System/Library/Fonts/Helvetica.dfont', 'bolder');
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glob('../*.js', function (err, themePathList) {
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themePathList.forEach(function (themePath) {
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var themeName = path.basename(themePath, '.js');
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var canvasList = [];
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require(themePath);
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echarts.util.each(options, function (option) {
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var canvas = createCanvas();
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var chart = echarts.init(canvas, themeName);
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var optionNeedFix = option;
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if (option.options) {
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optionNeedFix = option.options[0];
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}
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canvasList.push(canvas);
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optionNeedFix.animation = false;
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optionNeedFix.textStyle = {
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fontFamily: 'Helvetica',
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fontSize: 12
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};
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chart.setOption(option);
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chart.dispose();
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});
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var columnCount = 2;
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var outputCanvas = new Canvas(WIDTH * columnCount, HEIGHT * canvasList.length / columnCount);
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var outputCtx = outputCanvas.getContext('2d');
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canvasList.forEach(function (canvas, idx) {
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outputCtx.drawImage(canvas, idx % columnCount * WIDTH, Math.floor(idx / columnCount) * HEIGHT, WIDTH, HEIGHT);
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});
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fs.writeFileSync('../thumb/' + themeName + '.png', outputCanvas.toBuffer());
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});
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});
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function createCanvas() {
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var canvas = new Canvas(WIDTH, HEIGHT);
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var ctx = canvas.getContext('2d');
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ctx.addFont(font);
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return canvas;
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}
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