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ChartUtilities.html

ChartUtilities.html 72 KB
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  1. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    2. 

  2. <html lang="en">
    3. 

  3. <head>
    4. 

  4. <title>Source code</title>
    5. 

  5. <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style">
    6. 

  6. </head>
    7. 

  7. <body>
    8. 

  8. <div class="sourceContainer">
    9. 

  9. <pre><span class="sourceLineNo">001</span>/* ===========================================================<a name="line.1"></a>
    10. 

  10. <span class="sourceLineNo">002</span> * JFreeChart : a free chart library for the Java(tm) platform<a name="line.2"></a>
    11. 

  11. <span class="sourceLineNo">003</span> * ===========================================================<a name="line.3"></a>
    12. 

  12. <span class="sourceLineNo">004</span> *<a name="line.4"></a>
    13. 

  13. <span class="sourceLineNo">005</span> * (C) Copyright 2000-2013, by Object Refinery Limited and Contributors.<a name="line.5"></a>
    14. 

  14. <span class="sourceLineNo">006</span> *<a name="line.6"></a>
    15. 

  15. <span class="sourceLineNo">007</span> * Project Info:  http://www.jfree.org/jfreechart/index.html<a name="line.7"></a>
    16. 

  16. <span class="sourceLineNo">008</span> *<a name="line.8"></a>
    17. 

  17. <span class="sourceLineNo">009</span> * This library is free software; you can redistribute it and/or modify it<a name="line.9"></a>
    18. 

  18. <span class="sourceLineNo">010</span> * under the terms of the GNU Lesser General Public License as published by<a name="line.10"></a>
    19. 

  19. <span class="sourceLineNo">011</span> * the Free Software Foundation; either version 2.1 of the License, or<a name="line.11"></a>
    20. 

  20. <span class="sourceLineNo">012</span> * (at your option) any later version.<a name="line.12"></a>
    21. 

  21. <span class="sourceLineNo">013</span> *<a name="line.13"></a>
    22. 

  22. <span class="sourceLineNo">014</span> * This library is distributed in the hope that it will be useful, but<a name="line.14"></a>
    23. 

  23. <span class="sourceLineNo">015</span> * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY<a name="line.15"></a>
    24. 

  24. <span class="sourceLineNo">016</span> * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public<a name="line.16"></a>
    25. 

  25. <span class="sourceLineNo">017</span> * License for more details.<a name="line.17"></a>
    26. 

  26. <span class="sourceLineNo">018</span> *<a name="line.18"></a>
    27. 

  27. <span class="sourceLineNo">019</span> * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a>
    28. 

  28. <span class="sourceLineNo">020</span> * License along with this library; if not, write to the Free Software<a name="line.20"></a>
    29. 

  29. <span class="sourceLineNo">021</span> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,<a name="line.21"></a>
    30. 

  30. <span class="sourceLineNo">022</span> * USA.<a name="line.22"></a>
    31. 

  31. <span class="sourceLineNo">023</span> *<a name="line.23"></a>
    32. 

  32. <span class="sourceLineNo">024</span> * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. <a name="line.24"></a>
    33. 

  33. <span class="sourceLineNo">025</span> * Other names may be trademarks of their respective owners.]<a name="line.25"></a>
    34. 

  34. <span class="sourceLineNo">026</span> *<a name="line.26"></a>
    35. 

  35. <span class="sourceLineNo">027</span> * -------------------<a name="line.27"></a>
    36. 

  36. <span class="sourceLineNo">028</span> * ChartUtilities.java<a name="line.28"></a>
    37. 

  37. <span class="sourceLineNo">029</span> * -------------------<a name="line.29"></a>
    38. 

  38. <span class="sourceLineNo">030</span> * (C) Copyright 2001-2013, by Object Refinery Limited and Contributors.<a name="line.30"></a>
    39. 

  39. <span class="sourceLineNo">031</span> *<a name="line.31"></a>
    40. 

  40. <span class="sourceLineNo">032</span> * Original Author:  David Gilbert (for Object Refinery Limited);<a name="line.32"></a>
    41. 

  41. <span class="sourceLineNo">033</span> * Contributor(s):   Wolfgang Irler;<a name="line.33"></a>
    42. 

  42. <span class="sourceLineNo">034</span> *                   Richard Atkinson;<a name="line.34"></a>
    43. 

  43. <span class="sourceLineNo">035</span> *                   Xavier Poinsard;<a name="line.35"></a>
    44. 

  44. <span class="sourceLineNo">036</span> *<a name="line.36"></a>
    45. 

  45. <span class="sourceLineNo">037</span> * Changes<a name="line.37"></a>
    46. 

  46. <span class="sourceLineNo">038</span> * -------<a name="line.38"></a>
    47. 

  47. <span class="sourceLineNo">039</span> * 11-Dec-2001 : Version 1.  The JPEG method comes from Wolfgang Irler's<a name="line.39"></a>
    48. 

  48. <span class="sourceLineNo">040</span> *               JFreeChartServletDemo class (DG);<a name="line.40"></a>
    49. 

  49. <span class="sourceLineNo">041</span> * 23-Jan-2002 : Changed saveChartAsXXX() methods to pass IOExceptions back to<a name="line.41"></a>
    50. 

  50. <span class="sourceLineNo">042</span> *               caller (DG);<a name="line.42"></a>
    51. 

  51. <span class="sourceLineNo">043</span> * 26-Jun-2002 : Added image map methods (DG);<a name="line.43"></a>
    52. 

  52. <span class="sourceLineNo">044</span> * 05-Aug-2002 : Added writeBufferedImage methods<a name="line.44"></a>
    53. 

  53. <span class="sourceLineNo">045</span> *               Modified writeImageMap method to support flexible image<a name="line.45"></a>
    54. 

  54. <span class="sourceLineNo">046</span> *               maps (RA);<a name="line.46"></a>
    55. 

  55. <span class="sourceLineNo">047</span> * 26-Aug-2002 : Added saveChartAsJPEG and writeChartAsJPEG methods with info<a name="line.47"></a>
    56. 

  56. <span class="sourceLineNo">048</span> *               objects (RA);<a name="line.48"></a>
    57. 

  57. <span class="sourceLineNo">049</span> * 05-Sep-2002 : Added writeImageMap() method to support OverLIB<a name="line.49"></a>
    58. 

  58. <span class="sourceLineNo">050</span> *               - http://www.bosrup.com/web/overlib (RA);<a name="line.50"></a>
    59. 

  59. <span class="sourceLineNo">051</span> * 26-Sep-2002 : Fixed errors reported by Checkstyle (DG);<a name="line.51"></a>
    60. 

  60. <span class="sourceLineNo">052</span> * 17-Oct-2002 : Exposed JPEG quality setting and PNG compression level as<a name="line.52"></a>
    61. 

  61. <span class="sourceLineNo">053</span> *               parameters (DG);<a name="line.53"></a>
    62. 

  62. <span class="sourceLineNo">054</span> * 25-Oct-2002 : Fixed writeChartAsJPEG() empty method bug (DG);<a name="line.54"></a>
    63. 

  63. <span class="sourceLineNo">055</span> * 13-Mar-2003 : Updated writeImageMap method as suggested by Xavier Poinsard<a name="line.55"></a>
    64. 

  64. <span class="sourceLineNo">056</span> *               (see Feature Request 688079) (DG);<a name="line.56"></a>
    65. 

  65. <span class="sourceLineNo">057</span> * 12-Aug-2003 : Added support for custom image maps using<a name="line.57"></a>
    66. 

  66. <span class="sourceLineNo">058</span> *               ToolTipTagFragmentGenerator and URLTagFragmentGenerator (RA);<a name="line.58"></a>
    67. 

  67. <span class="sourceLineNo">059</span> * 02-Sep-2003 : Separated PNG encoding from writing chart to an<a name="line.59"></a>
    68. 

  68. <span class="sourceLineNo">060</span> *               OutputStream (RA);<a name="line.60"></a>
    69. 

  69. <span class="sourceLineNo">061</span> * 04-Dec-2003 : Chart draw() method modified to include anchor point (DG);<a name="line.61"></a>
    70. 

  70. <span class="sourceLineNo">062</span> * 20-Feb-2004 : Edited Javadocs and added argument checking (DG);<a name="line.62"></a>
    71. 

  71. <span class="sourceLineNo">063</span> * 05-Apr-2004 : Fixed problem with buffered image type (DG);<a name="line.63"></a>
    72. 

  72. <span class="sourceLineNo">064</span> * 01-Aug-2004 : Modified to use EncoderUtil for all image encoding (RA);<a name="line.64"></a>
    73. 

  73. <span class="sourceLineNo">065</span> * 02-Aug-2004 : Delegated image map related functionality to ImageMapUtil (RA);<a name="line.65"></a>
    74. 

  74. <span class="sourceLineNo">066</span> * 13-Jan-2005 : Renamed ImageMapUtil --&gt; ImageMapUtilities, removed method<a name="line.66"></a>
    75. 

  75. <span class="sourceLineNo">067</span> *               writeImageMap(PrintWriter, String, ChartRenderingInfo) which<a name="line.67"></a>
    76. 

  76. <span class="sourceLineNo">068</span> *               exists in ImageMapUtilities (DG);<a name="line.68"></a>
    77. 

  77. <span class="sourceLineNo">069</span> * ------------- JFREECHART 1.0.x ---------------------------------------------<a name="line.69"></a>
    78. 

  78. <span class="sourceLineNo">070</span> * 06-Feb-2006 : API doc update (DG);<a name="line.70"></a>
    79. 

  79. <span class="sourceLineNo">071</span> * 19-Mar-2007 : Use try-finally to close output stream in saveChartAsXXX()<a name="line.71"></a>
    80. 

  80. <span class="sourceLineNo">072</span> *               methods (DG);<a name="line.72"></a>
    81. 

  81. <span class="sourceLineNo">073</span> * 10-Jan-2008 : Fix bug 1868251 - don't create image with transparency when<a name="line.73"></a>
    82. 

  82. <span class="sourceLineNo">074</span> *               saving to JPEG format (DG);<a name="line.74"></a>
    83. 

  83. <span class="sourceLineNo">075</span> * 02-Jul-2013 : Use ParamChecks class (DG);<a name="line.75"></a>
    84. 

  84. <span class="sourceLineNo">076</span> *<a name="line.76"></a>
    85. 

  85. <span class="sourceLineNo">077</span> */<a name="line.77"></a>
    86. 

  86. <span class="sourceLineNo">078</span><a name="line.78"></a>
    87. 

  87. <span class="sourceLineNo">079</span>package org.jfree.chart;<a name="line.79"></a>
    88. 

  88. <span class="sourceLineNo">080</span><a name="line.80"></a>
    89. 

  89. <span class="sourceLineNo">081</span>import java.awt.Graphics2D;<a name="line.81"></a>
    90. 

  90. <span class="sourceLineNo">082</span>import java.awt.geom.AffineTransform;<a name="line.82"></a>
    91. 

  91. <span class="sourceLineNo">083</span>import java.awt.geom.Rectangle2D;<a name="line.83"></a>
    92. 

  92. <span class="sourceLineNo">084</span>import java.awt.image.BufferedImage;<a name="line.84"></a>
    93. 

  93. <span class="sourceLineNo">085</span>import java.io.BufferedOutputStream;<a name="line.85"></a>
    94. 

  94. <span class="sourceLineNo">086</span>import java.io.File;<a name="line.86"></a>
    95. 

  95. <span class="sourceLineNo">087</span>import java.io.FileOutputStream;<a name="line.87"></a>
    96. 

  96. <span class="sourceLineNo">088</span>import java.io.IOException;<a name="line.88"></a>
    97. 

  97. <span class="sourceLineNo">089</span>import java.io.OutputStream;<a name="line.89"></a>
    98. 

  98. <span class="sourceLineNo">090</span>import java.io.PrintWriter;<a name="line.90"></a>
    99. 

  99. <span class="sourceLineNo">091</span><a name="line.91"></a>
    100. 

  100. <span class="sourceLineNo">092</span>import org.jfree.chart.encoders.EncoderUtil;<a name="line.92"></a>
    101. 

  101. <span class="sourceLineNo">093</span>import org.jfree.chart.encoders.ImageFormat;<a name="line.93"></a>
    102. 

  102. <span class="sourceLineNo">094</span>import org.jfree.chart.imagemap.ImageMapUtilities;<a name="line.94"></a>
    103. 

  103. <span class="sourceLineNo">095</span>import org.jfree.chart.imagemap.OverLIBToolTipTagFragmentGenerator;<a name="line.95"></a>
    104. 

  104. <span class="sourceLineNo">096</span>import org.jfree.chart.imagemap.StandardToolTipTagFragmentGenerator;<a name="line.96"></a>
    105. 

  105. <span class="sourceLineNo">097</span>import org.jfree.chart.imagemap.StandardURLTagFragmentGenerator;<a name="line.97"></a>
    106. 

  106. <span class="sourceLineNo">098</span>import org.jfree.chart.imagemap.ToolTipTagFragmentGenerator;<a name="line.98"></a>
    107. 

  107. <span class="sourceLineNo">099</span>import org.jfree.chart.imagemap.URLTagFragmentGenerator;<a name="line.99"></a>
    108. 

  108. <span class="sourceLineNo">100</span>import org.jfree.chart.util.ParamChecks;<a name="line.100"></a>
    109. 

  109. <span class="sourceLineNo">101</span><a name="line.101"></a>
    110. 

  110. <span class="sourceLineNo">102</span>/**<a name="line.102"></a>
    111. 

  111. <span class="sourceLineNo">103</span> * A collection of utility methods for JFreeChart.  Includes methods for<a name="line.103"></a>
    112. 

  112. <span class="sourceLineNo">104</span> * converting charts to image formats (PNG and JPEG) plus creating simple HTML<a name="line.104"></a>
    113. 

  113. <span class="sourceLineNo">105</span> * image maps.<a name="line.105"></a>
    114. 

  114. <span class="sourceLineNo">106</span> *<a name="line.106"></a>
    115. 

  115. <span class="sourceLineNo">107</span> * @see ImageMapUtilities<a name="line.107"></a>
    116. 

  116. <span class="sourceLineNo">108</span> */<a name="line.108"></a>
    117. 

  117. <span class="sourceLineNo">109</span>public abstract class ChartUtilities {<a name="line.109"></a>
    118. 

  118. <span class="sourceLineNo">110</span><a name="line.110"></a>
    119. 

  119. <span class="sourceLineNo">111</span>    /**<a name="line.111"></a>
    120. 

  120. <span class="sourceLineNo">112</span>     * Applies the current theme to the specified chart.  This method is<a name="line.112"></a>
    121. 

  121. <span class="sourceLineNo">113</span>     * provided for convenience, the theme itself is stored in the<a name="line.113"></a>
    122. 

  122. <span class="sourceLineNo">114</span>     * {@link ChartFactory} class.<a name="line.114"></a>
    123. 

  123. <span class="sourceLineNo">115</span>     *<a name="line.115"></a>
    124. 

  124. <span class="sourceLineNo">116</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.116"></a>
    125. 

  125. <span class="sourceLineNo">117</span>     *<a name="line.117"></a>
    126. 

  126. <span class="sourceLineNo">118</span>     * @since 1.0.11<a name="line.118"></a>
    127. 

  127. <span class="sourceLineNo">119</span>     */<a name="line.119"></a>
    128. 

  128. <span class="sourceLineNo">120</span>    public static void applyCurrentTheme(JFreeChart chart) {<a name="line.120"></a>
    129. 

  129. <span class="sourceLineNo">121</span>        ChartFactory.getChartTheme().apply(chart);<a name="line.121"></a>
    130. 

  130. <span class="sourceLineNo">122</span>    }<a name="line.122"></a>
    131. 

  131. <span class="sourceLineNo">123</span><a name="line.123"></a>
    132. 

  132. <span class="sourceLineNo">124</span>    /**<a name="line.124"></a>
    133. 

  133. <span class="sourceLineNo">125</span>     * Writes a chart to an output stream in PNG format.<a name="line.125"></a>
    134. 

  134. <span class="sourceLineNo">126</span>     *<a name="line.126"></a>
    135. 

  135. <span class="sourceLineNo">127</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.127"></a>
    136. 

  136. <span class="sourceLineNo">128</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.128"></a>
    137. 

  137. <span class="sourceLineNo">129</span>     * @param width  the image width.<a name="line.129"></a>
    138. 

  138. <span class="sourceLineNo">130</span>     * @param height  the image height.<a name="line.130"></a>
    139. 

  139. <span class="sourceLineNo">131</span>     *<a name="line.131"></a>
    140. 

  140. <span class="sourceLineNo">132</span>     * @throws IOException if there are any I/O errors.<a name="line.132"></a>
    141. 

  141. <span class="sourceLineNo">133</span>     */<a name="line.133"></a>
    142. 

  142. <span class="sourceLineNo">134</span>    public static void writeChartAsPNG(OutputStream out, JFreeChart chart,<a name="line.134"></a>
    143. 

  143. <span class="sourceLineNo">135</span>            int width, int height) throws IOException {<a name="line.135"></a>
    144. 

  144. <span class="sourceLineNo">136</span><a name="line.136"></a>
    145. 

  145. <span class="sourceLineNo">137</span>        // defer argument checking...<a name="line.137"></a>
    146. 

  146. <span class="sourceLineNo">138</span>        writeChartAsPNG(out, chart, width, height, null);<a name="line.138"></a>
    147. 

  147. <span class="sourceLineNo">139</span><a name="line.139"></a>
    148. 

  148. <span class="sourceLineNo">140</span>    }<a name="line.140"></a>
    149. 

  149. <span class="sourceLineNo">141</span><a name="line.141"></a>
    150. 

  150. <span class="sourceLineNo">142</span>    /**<a name="line.142"></a>
    151. 

  151. <span class="sourceLineNo">143</span>     * Writes a chart to an output stream in PNG format.<a name="line.143"></a>
    152. 

  152. <span class="sourceLineNo">144</span>     *<a name="line.144"></a>
    153. 

  153. <span class="sourceLineNo">145</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.145"></a>
    154. 

  154. <span class="sourceLineNo">146</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.146"></a>
    155. 

  155. <span class="sourceLineNo">147</span>     * @param width  the image width.<a name="line.147"></a>
    156. 

  156. <span class="sourceLineNo">148</span>     * @param height  the image height.<a name="line.148"></a>
    157. 

  157. <span class="sourceLineNo">149</span>     * @param encodeAlpha  encode alpha?<a name="line.149"></a>
    158. 

  158. <span class="sourceLineNo">150</span>     * @param compression  the compression level (0-9).<a name="line.150"></a>
    159. 

  159. <span class="sourceLineNo">151</span>     *<a name="line.151"></a>
    160. 

  160. <span class="sourceLineNo">152</span>     * @throws IOException if there are any I/O errors.<a name="line.152"></a>
    161. 

  161. <span class="sourceLineNo">153</span>     */<a name="line.153"></a>
    162. 

  162. <span class="sourceLineNo">154</span>    public static void writeChartAsPNG(OutputStream out, JFreeChart chart,<a name="line.154"></a>
    163. 

  163. <span class="sourceLineNo">155</span>            int width, int height, boolean encodeAlpha, int compression)<a name="line.155"></a>
    164. 

  164. <span class="sourceLineNo">156</span>            throws IOException {<a name="line.156"></a>
    165. 

  165. <span class="sourceLineNo">157</span><a name="line.157"></a>
    166. 

  166. <span class="sourceLineNo">158</span>        // defer argument checking...<a name="line.158"></a>
    167. 

  167. <span class="sourceLineNo">159</span>        ChartUtilities.writeChartAsPNG(out, chart, width, height, null,<a name="line.159"></a>
    168. 

  168. <span class="sourceLineNo">160</span>                encodeAlpha, compression);<a name="line.160"></a>
    169. 

  169. <span class="sourceLineNo">161</span><a name="line.161"></a>
    170. 

  170. <span class="sourceLineNo">162</span>    }<a name="line.162"></a>
    171. 

  171. <span class="sourceLineNo">163</span><a name="line.163"></a>
    172. 

  172. <span class="sourceLineNo">164</span>    /**<a name="line.164"></a>
    173. 

  173. <span class="sourceLineNo">165</span>     * Writes a chart to an output stream in PNG format.  This method allows<a name="line.165"></a>
    174. 

  174. <span class="sourceLineNo">166</span>     * you to pass in a {@link ChartRenderingInfo} object, to collect<a name="line.166"></a>
    175. 

  175. <span class="sourceLineNo">167</span>     * information about the chart dimensions/entities.  You will need this<a name="line.167"></a>
    176. 

  176. <span class="sourceLineNo">168</span>     * info if you want to create an HTML image map.<a name="line.168"></a>
    177. 

  177. <span class="sourceLineNo">169</span>     *<a name="line.169"></a>
    178. 

  178. <span class="sourceLineNo">170</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.170"></a>
    179. 

  179. <span class="sourceLineNo">171</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.171"></a>
    180. 

  180. <span class="sourceLineNo">172</span>     * @param width  the image width.<a name="line.172"></a>
    181. 

  181. <span class="sourceLineNo">173</span>     * @param height  the image height.<a name="line.173"></a>
    182. 

  182. <span class="sourceLineNo">174</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.174"></a>
    183. 

  183. <span class="sourceLineNo">175</span>     *<a name="line.175"></a>
    184. 

  184. <span class="sourceLineNo">176</span>     * @throws IOException if there are any I/O errors.<a name="line.176"></a>
    185. 

  185. <span class="sourceLineNo">177</span>     */<a name="line.177"></a>
    186. 

  186. <span class="sourceLineNo">178</span>    public static void writeChartAsPNG(OutputStream out, JFreeChart chart,<a name="line.178"></a>
    187. 

  187. <span class="sourceLineNo">179</span>            int width, int height,  ChartRenderingInfo info)<a name="line.179"></a>
    188. 

  188. <span class="sourceLineNo">180</span>            throws IOException {<a name="line.180"></a>
    189. 

  189. <span class="sourceLineNo">181</span><a name="line.181"></a>
    190. 

  190. <span class="sourceLineNo">182</span>        ParamChecks.nullNotPermitted(chart, "chart");<a name="line.182"></a>
    191. 

  191. <span class="sourceLineNo">183</span>        BufferedImage bufferedImage<a name="line.183"></a>
    192. 

  192. <span class="sourceLineNo">184</span>                = chart.createBufferedImage(width, height, info);<a name="line.184"></a>
    193. 

  193. <span class="sourceLineNo">185</span>        EncoderUtil.writeBufferedImage(bufferedImage, ImageFormat.PNG, out);<a name="line.185"></a>
    194. 

  194. <span class="sourceLineNo">186</span>    }<a name="line.186"></a>
    195. 

  195. <span class="sourceLineNo">187</span><a name="line.187"></a>
    196. 

  196. <span class="sourceLineNo">188</span>    /**<a name="line.188"></a>
    197. 

  197. <span class="sourceLineNo">189</span>     * Writes a chart to an output stream in PNG format.  This method allows<a name="line.189"></a>
    198. 

  198. <span class="sourceLineNo">190</span>     * you to pass in a {@link ChartRenderingInfo} object, to collect<a name="line.190"></a>
    199. 

  199. <span class="sourceLineNo">191</span>     * information about the chart dimensions/entities.  You will need this<a name="line.191"></a>
    200. 

  200. <span class="sourceLineNo">192</span>     * info if you want to create an HTML image map.<a name="line.192"></a>
    201. 

  201. <span class="sourceLineNo">193</span>     *<a name="line.193"></a>
    202. 

  202. <span class="sourceLineNo">194</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.194"></a>
    203. 

  203. <span class="sourceLineNo">195</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.195"></a>
    204. 

  204. <span class="sourceLineNo">196</span>     * @param width  the image width.<a name="line.196"></a>
    205. 

  205. <span class="sourceLineNo">197</span>     * @param height  the image height.<a name="line.197"></a>
    206. 

  206. <span class="sourceLineNo">198</span>     * @param info  carries back chart rendering info (&lt;code&gt;null&lt;/code&gt;<a name="line.198"></a>
    207. 

  207. <span class="sourceLineNo">199</span>     *              permitted).<a name="line.199"></a>
    208. 

  208. <span class="sourceLineNo">200</span>     * @param encodeAlpha  encode alpha?<a name="line.200"></a>
    209. 

  209. <span class="sourceLineNo">201</span>     * @param compression  the PNG compression level (0-9).<a name="line.201"></a>
    210. 

  210. <span class="sourceLineNo">202</span>     *<a name="line.202"></a>
    211. 

  211. <span class="sourceLineNo">203</span>     * @throws IOException if there are any I/O errors.<a name="line.203"></a>
    212. 

  212. <span class="sourceLineNo">204</span>     */<a name="line.204"></a>
    213. 

  213. <span class="sourceLineNo">205</span>    public static void writeChartAsPNG(OutputStream out, JFreeChart chart,<a name="line.205"></a>
    214. 

  214. <span class="sourceLineNo">206</span>            int width, int height, ChartRenderingInfo info,<a name="line.206"></a>
    215. 

  215. <span class="sourceLineNo">207</span>            boolean encodeAlpha, int compression) throws IOException {<a name="line.207"></a>
    216. 

  216. <span class="sourceLineNo">208</span><a name="line.208"></a>
    217. 

  217. <span class="sourceLineNo">209</span>        ParamChecks.nullNotPermitted(out, "out");<a name="line.209"></a>
    218. 

  218. <span class="sourceLineNo">210</span>        ParamChecks.nullNotPermitted(chart, "chart");<a name="line.210"></a>
    219. 

  219. <span class="sourceLineNo">211</span>        BufferedImage chartImage = chart.createBufferedImage(width, height,<a name="line.211"></a>
    220. 

  220. <span class="sourceLineNo">212</span>                BufferedImage.TYPE_INT_ARGB, info);<a name="line.212"></a>
    221. 

  221. <span class="sourceLineNo">213</span>        ChartUtilities.writeBufferedImageAsPNG(out, chartImage, encodeAlpha,<a name="line.213"></a>
    222. 

  222. <span class="sourceLineNo">214</span>                compression);<a name="line.214"></a>
    223. 

  223. <span class="sourceLineNo">215</span><a name="line.215"></a>
    224. 

  224. <span class="sourceLineNo">216</span>    }<a name="line.216"></a>
    225. 

  225. <span class="sourceLineNo">217</span><a name="line.217"></a>
    226. 

  226. <span class="sourceLineNo">218</span>    /**<a name="line.218"></a>
    227. 

  227. <span class="sourceLineNo">219</span>     * Writes a scaled version of a chart to an output stream in PNG format.<a name="line.219"></a>
    228. 

  228. <span class="sourceLineNo">220</span>     *<a name="line.220"></a>
    229. 

  229. <span class="sourceLineNo">221</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.221"></a>
    230. 

  230. <span class="sourceLineNo">222</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.222"></a>
    231. 

  231. <span class="sourceLineNo">223</span>     * @param width  the unscaled chart width.<a name="line.223"></a>
    232. 

  232. <span class="sourceLineNo">224</span>     * @param height  the unscaled chart height.<a name="line.224"></a>
    233. 

  233. <span class="sourceLineNo">225</span>     * @param widthScaleFactor  the horizontal scale factor.<a name="line.225"></a>
    234. 

  234. <span class="sourceLineNo">226</span>     * @param heightScaleFactor  the vertical scale factor.<a name="line.226"></a>
    235. 

  235. <span class="sourceLineNo">227</span>     *<a name="line.227"></a>
    236. 

  236. <span class="sourceLineNo">228</span>     * @throws IOException if there are any I/O problems.<a name="line.228"></a>
    237. 

  237. <span class="sourceLineNo">229</span>     */<a name="line.229"></a>
    238. 

  238. <span class="sourceLineNo">230</span>    public static void writeScaledChartAsPNG(OutputStream out,<a name="line.230"></a>
    239. 

  239. <span class="sourceLineNo">231</span>            JFreeChart chart, int width, int height, int widthScaleFactor,<a name="line.231"></a>
    240. 

  240. <span class="sourceLineNo">232</span>            int heightScaleFactor) throws IOException {<a name="line.232"></a>
    241. 

  241. <span class="sourceLineNo">233</span><a name="line.233"></a>
    242. 

  242. <span class="sourceLineNo">234</span>        ParamChecks.nullNotPermitted(out, "out");<a name="line.234"></a>
    243. 

  243. <span class="sourceLineNo">235</span>        ParamChecks.nullNotPermitted(chart, "chart");<a name="line.235"></a>
    244. 

  244. <span class="sourceLineNo">236</span><a name="line.236"></a>
    245. 

  245. <span class="sourceLineNo">237</span>        double desiredWidth = width * widthScaleFactor;<a name="line.237"></a>
    246. 

  246. <span class="sourceLineNo">238</span>        double desiredHeight = height * heightScaleFactor;<a name="line.238"></a>
    247. 

  247. <span class="sourceLineNo">239</span>        double defaultWidth = width;<a name="line.239"></a>
    248. 

  248. <span class="sourceLineNo">240</span>        double defaultHeight = height;<a name="line.240"></a>
    249. 

  249. <span class="sourceLineNo">241</span>        boolean scale = false;<a name="line.241"></a>
    250. 

  250. <span class="sourceLineNo">242</span><a name="line.242"></a>
    251. 

  251. <span class="sourceLineNo">243</span>        // get desired width and height from somewhere then...<a name="line.243"></a>
    252. 

  252. <span class="sourceLineNo">244</span>        if ((widthScaleFactor != 1) || (heightScaleFactor != 1)) {<a name="line.244"></a>
    253. 

  253. <span class="sourceLineNo">245</span>            scale = true;<a name="line.245"></a>
    254. 

  254. <span class="sourceLineNo">246</span>        }<a name="line.246"></a>
    255. 

  255. <span class="sourceLineNo">247</span><a name="line.247"></a>
    256. 

  256. <span class="sourceLineNo">248</span>        double scaleX = desiredWidth / defaultWidth;<a name="line.248"></a>
    257. 

  257. <span class="sourceLineNo">249</span>        double scaleY = desiredHeight / defaultHeight;<a name="line.249"></a>
    258. 

  258. <span class="sourceLineNo">250</span><a name="line.250"></a>
    259. 

  259. <span class="sourceLineNo">251</span>        BufferedImage image = new BufferedImage((int) desiredWidth,<a name="line.251"></a>
    260. 

  260. <span class="sourceLineNo">252</span>                (int) desiredHeight, BufferedImage.TYPE_INT_ARGB);<a name="line.252"></a>
    261. 

  261. <span class="sourceLineNo">253</span>        Graphics2D g2 = image.createGraphics();<a name="line.253"></a>
    262. 

  262. <span class="sourceLineNo">254</span><a name="line.254"></a>
    263. 

  263. <span class="sourceLineNo">255</span>        if (scale) {<a name="line.255"></a>
    264. 

  264. <span class="sourceLineNo">256</span>            AffineTransform saved = g2.getTransform();<a name="line.256"></a>
    265. 

  265. <span class="sourceLineNo">257</span>            g2.transform(AffineTransform.getScaleInstance(scaleX, scaleY));<a name="line.257"></a>
    266. 

  266. <span class="sourceLineNo">258</span>            chart.draw(g2, new Rectangle2D.Double(0, 0, defaultWidth,<a name="line.258"></a>
    267. 

  267. <span class="sourceLineNo">259</span>                    defaultHeight), null, null);<a name="line.259"></a>
    268. 

  268. <span class="sourceLineNo">260</span>            g2.setTransform(saved);<a name="line.260"></a>
    269. 

  269. <span class="sourceLineNo">261</span>            g2.dispose();<a name="line.261"></a>
    270. 

  270. <span class="sourceLineNo">262</span>        }<a name="line.262"></a>
    271. 

  271. <span class="sourceLineNo">263</span>        else {<a name="line.263"></a>
    272. 

  272. <span class="sourceLineNo">264</span>            chart.draw(g2, new Rectangle2D.Double(0, 0, defaultWidth,<a name="line.264"></a>
    273. 

  273. <span class="sourceLineNo">265</span>                    defaultHeight), null, null);<a name="line.265"></a>
    274. 

  274. <span class="sourceLineNo">266</span>        }<a name="line.266"></a>
    275. 

  275. <span class="sourceLineNo">267</span>        out.write(encodeAsPNG(image));<a name="line.267"></a>
    276. 

  276. <span class="sourceLineNo">268</span><a name="line.268"></a>
    277. 

  277. <span class="sourceLineNo">269</span>    }<a name="line.269"></a>
    278. 

  278. <span class="sourceLineNo">270</span><a name="line.270"></a>
    279. 

  279. <span class="sourceLineNo">271</span>    /**<a name="line.271"></a>
    280. 

  280. <span class="sourceLineNo">272</span>     * Saves a chart to the specified file in PNG format.<a name="line.272"></a>
    281. 

  281. <span class="sourceLineNo">273</span>     *<a name="line.273"></a>
    282. 

  282. <span class="sourceLineNo">274</span>     * @param file  the file name (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.274"></a>
    283. 

  283. <span class="sourceLineNo">275</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.275"></a>
    284. 

  284. <span class="sourceLineNo">276</span>     * @param width  the image width.<a name="line.276"></a>
    285. 

  285. <span class="sourceLineNo">277</span>     * @param height  the image height.<a name="line.277"></a>
    286. 

  286. <span class="sourceLineNo">278</span>     *<a name="line.278"></a>
    287. 

  287. <span class="sourceLineNo">279</span>     * @throws IOException if there are any I/O errors.<a name="line.279"></a>
    288. 

  288. <span class="sourceLineNo">280</span>     */<a name="line.280"></a>
    289. 

  289. <span class="sourceLineNo">281</span>    public static void saveChartAsPNG(File file, JFreeChart chart,<a name="line.281"></a>
    290. 

  290. <span class="sourceLineNo">282</span>            int width, int height) throws IOException {<a name="line.282"></a>
    291. 

  291. <span class="sourceLineNo">283</span><a name="line.283"></a>
    292. 

  292. <span class="sourceLineNo">284</span>        // defer argument checking...<a name="line.284"></a>
    293. 

  293. <span class="sourceLineNo">285</span>        saveChartAsPNG(file, chart, width, height, null);<a name="line.285"></a>
    294. 

  294. <span class="sourceLineNo">286</span><a name="line.286"></a>
    295. 

  295. <span class="sourceLineNo">287</span>    }<a name="line.287"></a>
    296. 

  296. <span class="sourceLineNo">288</span><a name="line.288"></a>
    297. 

  297. <span class="sourceLineNo">289</span>    /**<a name="line.289"></a>
    298. 

  298. <span class="sourceLineNo">290</span>     * Saves a chart to a file in PNG format.  This method allows you to pass<a name="line.290"></a>
    299. 

  299. <span class="sourceLineNo">291</span>     * in a {@link ChartRenderingInfo} object, to collect information about the<a name="line.291"></a>
    300. 

  300. <span class="sourceLineNo">292</span>     * chart dimensions/entities.  You will need this info if you want to<a name="line.292"></a>
    301. 

  301. <span class="sourceLineNo">293</span>     * create an HTML image map.<a name="line.293"></a>
    302. 

  302. <span class="sourceLineNo">294</span>     *<a name="line.294"></a>
    303. 

  303. <span class="sourceLineNo">295</span>     * @param file  the file (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.295"></a>
    304. 

  304. <span class="sourceLineNo">296</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.296"></a>
    305. 

  305. <span class="sourceLineNo">297</span>     * @param width  the image width.<a name="line.297"></a>
    306. 

  306. <span class="sourceLineNo">298</span>     * @param height  the image height.<a name="line.298"></a>
    307. 

  307. <span class="sourceLineNo">299</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.299"></a>
    308. 

  308. <span class="sourceLineNo">300</span>     *<a name="line.300"></a>
    309. 

  309. <span class="sourceLineNo">301</span>     * @throws IOException if there are any I/O errors.<a name="line.301"></a>
    310. 

  310. <span class="sourceLineNo">302</span>     */<a name="line.302"></a>
    311. 

  311. <span class="sourceLineNo">303</span>    public static void saveChartAsPNG(File file, JFreeChart chart,<a name="line.303"></a>
    312. 

  312. <span class="sourceLineNo">304</span>            int width, int height, ChartRenderingInfo info)<a name="line.304"></a>
    313. 

  313. <span class="sourceLineNo">305</span>        throws IOException {<a name="line.305"></a>
    314. 

  314. <span class="sourceLineNo">306</span><a name="line.306"></a>
    315. 

  315. <span class="sourceLineNo">307</span>        ParamChecks.nullNotPermitted(file, "file");<a name="line.307"></a>
    316. 

  316. <span class="sourceLineNo">308</span>        OutputStream out = new BufferedOutputStream(new FileOutputStream(file));<a name="line.308"></a>
    317. 

  317. <span class="sourceLineNo">309</span>        try {<a name="line.309"></a>
    318. 

  318. <span class="sourceLineNo">310</span>            ChartUtilities.writeChartAsPNG(out, chart, width, height, info);<a name="line.310"></a>
    319. 

  319. <span class="sourceLineNo">311</span>        }<a name="line.311"></a>
    320. 

  320. <span class="sourceLineNo">312</span>        finally {<a name="line.312"></a>
    321. 

  321. <span class="sourceLineNo">313</span>            out.close();<a name="line.313"></a>
    322. 

  322. <span class="sourceLineNo">314</span>        }<a name="line.314"></a>
    323. 

  323. <span class="sourceLineNo">315</span>    }<a name="line.315"></a>
    324. 

  324. <span class="sourceLineNo">316</span><a name="line.316"></a>
    325. 

  325. <span class="sourceLineNo">317</span>    /**<a name="line.317"></a>
    326. 

  326. <span class="sourceLineNo">318</span>     * Saves a chart to a file in PNG format.  This method allows you to pass<a name="line.318"></a>
    327. 

  327. <span class="sourceLineNo">319</span>     * in a {@link ChartRenderingInfo} object, to collect information about the<a name="line.319"></a>
    328. 

  328. <span class="sourceLineNo">320</span>     * chart dimensions/entities.  You will need this info if you want to<a name="line.320"></a>
    329. 

  329. <span class="sourceLineNo">321</span>     * create an HTML image map.<a name="line.321"></a>
    330. 

  330. <span class="sourceLineNo">322</span>     *<a name="line.322"></a>
    331. 

  331. <span class="sourceLineNo">323</span>     * @param file  the file (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.323"></a>
    332. 

  332. <span class="sourceLineNo">324</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.324"></a>
    333. 

  333. <span class="sourceLineNo">325</span>     * @param width  the image width.<a name="line.325"></a>
    334. 

  334. <span class="sourceLineNo">326</span>     * @param height  the image height.<a name="line.326"></a>
    335. 

  335. <span class="sourceLineNo">327</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.327"></a>
    336. 

  336. <span class="sourceLineNo">328</span>     * @param encodeAlpha  encode alpha?<a name="line.328"></a>
    337. 

  337. <span class="sourceLineNo">329</span>     * @param compression  the PNG compression level (0-9).<a name="line.329"></a>
    338. 

  338. <span class="sourceLineNo">330</span>     *<a name="line.330"></a>
    339. 

  339. <span class="sourceLineNo">331</span>     * @throws IOException if there are any I/O errors.<a name="line.331"></a>
    340. 

  340. <span class="sourceLineNo">332</span>     */<a name="line.332"></a>
    341. 

  341. <span class="sourceLineNo">333</span>    public static void saveChartAsPNG(File file, JFreeChart chart,<a name="line.333"></a>
    342. 

  342. <span class="sourceLineNo">334</span>           int width, int height, ChartRenderingInfo info, boolean encodeAlpha,<a name="line.334"></a>
    343. 

  343. <span class="sourceLineNo">335</span>           int compression) throws IOException {<a name="line.335"></a>
    344. 

  344. <span class="sourceLineNo">336</span><a name="line.336"></a>
    345. 

  345. <span class="sourceLineNo">337</span>        ParamChecks.nullNotPermitted(file, "file");<a name="line.337"></a>
    346. 

  346. <span class="sourceLineNo">338</span>        ParamChecks.nullNotPermitted(chart, "chart");<a name="line.338"></a>
    347. 

  347. <span class="sourceLineNo">339</span>        OutputStream out = new BufferedOutputStream(new FileOutputStream(file));<a name="line.339"></a>
    348. 

  348. <span class="sourceLineNo">340</span>        try {<a name="line.340"></a>
    349. 

  349. <span class="sourceLineNo">341</span>            writeChartAsPNG(out, chart, width, height, info, encodeAlpha,<a name="line.341"></a>
    350. 

  350. <span class="sourceLineNo">342</span>                    compression);<a name="line.342"></a>
    351. 

  351. <span class="sourceLineNo">343</span>        }<a name="line.343"></a>
    352. 

  352. <span class="sourceLineNo">344</span>        finally {<a name="line.344"></a>
    353. 

  353. <span class="sourceLineNo">345</span>            out.close();<a name="line.345"></a>
    354. 

  354. <span class="sourceLineNo">346</span>        }<a name="line.346"></a>
    355. 

  355. <span class="sourceLineNo">347</span><a name="line.347"></a>
    356. 

  356. <span class="sourceLineNo">348</span>    }<a name="line.348"></a>
    357. 

  357. <span class="sourceLineNo">349</span><a name="line.349"></a>
    358. 

  358. <span class="sourceLineNo">350</span>    /**<a name="line.350"></a>
    359. 

  359. <span class="sourceLineNo">351</span>     * Writes a chart to an output stream in JPEG format.  Please note that<a name="line.351"></a>
    360. 

  360. <span class="sourceLineNo">352</span>     * JPEG is a poor format for chart images, use PNG if possible.<a name="line.352"></a>
    361. 

  361. <span class="sourceLineNo">353</span>     *<a name="line.353"></a>
    362. 

  362. <span class="sourceLineNo">354</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.354"></a>
    363. 

  363. <span class="sourceLineNo">355</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.355"></a>
    364. 

  364. <span class="sourceLineNo">356</span>     * @param width  the image width.<a name="line.356"></a>
    365. 

  365. <span class="sourceLineNo">357</span>     * @param height  the image height.<a name="line.357"></a>
    366. 

  366. <span class="sourceLineNo">358</span>     *<a name="line.358"></a>
    367. 

  367. <span class="sourceLineNo">359</span>     * @throws IOException if there are any I/O errors.<a name="line.359"></a>
    368. 

  368. <span class="sourceLineNo">360</span>     */<a name="line.360"></a>
    369. 

  369. <span class="sourceLineNo">361</span>    public static void writeChartAsJPEG(OutputStream out,<a name="line.361"></a>
    370. 

  370. <span class="sourceLineNo">362</span>            JFreeChart chart, int width, int height) throws IOException {<a name="line.362"></a>
    371. 

  371. <span class="sourceLineNo">363</span><a name="line.363"></a>
    372. 

  372. <span class="sourceLineNo">364</span>        // defer argument checking...<a name="line.364"></a>
    373. 

  373. <span class="sourceLineNo">365</span>        writeChartAsJPEG(out, chart, width, height, null);<a name="line.365"></a>
    374. 

  374. <span class="sourceLineNo">366</span><a name="line.366"></a>
    375. 

  375. <span class="sourceLineNo">367</span>    }<a name="line.367"></a>
    376. 

  376. <span class="sourceLineNo">368</span><a name="line.368"></a>
    377. 

  377. <span class="sourceLineNo">369</span>    /**<a name="line.369"></a>
    378. 

  378. <span class="sourceLineNo">370</span>     * Writes a chart to an output stream in JPEG format.  Please note that<a name="line.370"></a>
    379. 

  379. <span class="sourceLineNo">371</span>     * JPEG is a poor format for chart images, use PNG if possible.<a name="line.371"></a>
    380. 

  380. <span class="sourceLineNo">372</span>     *<a name="line.372"></a>
    381. 

  381. <span class="sourceLineNo">373</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.373"></a>
    382. 

  382. <span class="sourceLineNo">374</span>     * @param quality  the quality setting.<a name="line.374"></a>
    383. 

  383. <span class="sourceLineNo">375</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.375"></a>
    384. 

  384. <span class="sourceLineNo">376</span>     * @param width  the image width.<a name="line.376"></a>
    385. 

  385. <span class="sourceLineNo">377</span>     * @param height  the image height.<a name="line.377"></a>
    386. 

  386. <span class="sourceLineNo">378</span>     *<a name="line.378"></a>
    387. 

  387. <span class="sourceLineNo">379</span>     * @throws IOException if there are any I/O errors.<a name="line.379"></a>
    388. 

  388. <span class="sourceLineNo">380</span>     */<a name="line.380"></a>
    389. 

  389. <span class="sourceLineNo">381</span>    public static void writeChartAsJPEG(OutputStream out, float quality,<a name="line.381"></a>
    390. 

  390. <span class="sourceLineNo">382</span>            JFreeChart chart, int width, int height) throws IOException {<a name="line.382"></a>
    391. 

  391. <span class="sourceLineNo">383</span><a name="line.383"></a>
    392. 

  392. <span class="sourceLineNo">384</span>        // defer argument checking...<a name="line.384"></a>
    393. 

  393. <span class="sourceLineNo">385</span>        ChartUtilities.writeChartAsJPEG(out, quality, chart, width, height,<a name="line.385"></a>
    394. 

  394. <span class="sourceLineNo">386</span>                null);<a name="line.386"></a>
    395. 

  395. <span class="sourceLineNo">387</span><a name="line.387"></a>
    396. 

  396. <span class="sourceLineNo">388</span>    }<a name="line.388"></a>
    397. 

  397. <span class="sourceLineNo">389</span><a name="line.389"></a>
    398. 

  398. <span class="sourceLineNo">390</span>    /**<a name="line.390"></a>
    399. 

  399. <span class="sourceLineNo">391</span>     * Writes a chart to an output stream in JPEG format. This method allows<a name="line.391"></a>
    400. 

  400. <span class="sourceLineNo">392</span>     * you to pass in a {@link ChartRenderingInfo} object, to collect<a name="line.392"></a>
    401. 

  401. <span class="sourceLineNo">393</span>     * information about the chart dimensions/entities.  You will need this<a name="line.393"></a>
    402. 

  402. <span class="sourceLineNo">394</span>     * info if you want to create an HTML image map.<a name="line.394"></a>
    403. 

  403. <span class="sourceLineNo">395</span>     *<a name="line.395"></a>
    404. 

  404. <span class="sourceLineNo">396</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.396"></a>
    405. 

  405. <span class="sourceLineNo">397</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.397"></a>
    406. 

  406. <span class="sourceLineNo">398</span>     * @param width  the image width.<a name="line.398"></a>
    407. 

  407. <span class="sourceLineNo">399</span>     * @param height  the image height.<a name="line.399"></a>
    408. 

  408. <span class="sourceLineNo">400</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.400"></a>
    409. 

  409. <span class="sourceLineNo">401</span>     *<a name="line.401"></a>
    410. 

  410. <span class="sourceLineNo">402</span>     * @throws IOException if there are any I/O errors.<a name="line.402"></a>
    411. 

  411. <span class="sourceLineNo">403</span>     */<a name="line.403"></a>
    412. 

  412. <span class="sourceLineNo">404</span>    public static void writeChartAsJPEG(OutputStream out, JFreeChart chart,<a name="line.404"></a>
    413. 

  413. <span class="sourceLineNo">405</span>            int width, int height, ChartRenderingInfo info)<a name="line.405"></a>
    414. 

  414. <span class="sourceLineNo">406</span>            throws IOException {<a name="line.406"></a>
    415. 

  415. <span class="sourceLineNo">407</span><a name="line.407"></a>
    416. 

  416. <span class="sourceLineNo">408</span>        ParamChecks.nullNotPermitted(out, "out");<a name="line.408"></a>
    417. 

  417. <span class="sourceLineNo">409</span>        ParamChecks.nullNotPermitted(chart, "chart");<a name="line.409"></a>
    418. 

  418. <span class="sourceLineNo">410</span>        BufferedImage image = chart.createBufferedImage(width, height,<a name="line.410"></a>
    419. 

  419. <span class="sourceLineNo">411</span>                BufferedImage.TYPE_INT_RGB, info);<a name="line.411"></a>
    420. 

  420. <span class="sourceLineNo">412</span>        EncoderUtil.writeBufferedImage(image, ImageFormat.JPEG, out);<a name="line.412"></a>
    421. 

  421. <span class="sourceLineNo">413</span><a name="line.413"></a>
    422. 

  422. <span class="sourceLineNo">414</span>    }<a name="line.414"></a>
    423. 

  423. <span class="sourceLineNo">415</span><a name="line.415"></a>
    424. 

  424. <span class="sourceLineNo">416</span>    /**<a name="line.416"></a>
    425. 

  425. <span class="sourceLineNo">417</span>     * Writes a chart to an output stream in JPEG format.  This method allows<a name="line.417"></a>
    426. 

  426. <span class="sourceLineNo">418</span>     * you to pass in a {@link ChartRenderingInfo} object, to collect<a name="line.418"></a>
    427. 

  427. <span class="sourceLineNo">419</span>     * information about the chart dimensions/entities.  You will need this<a name="line.419"></a>
    428. 

  428. <span class="sourceLineNo">420</span>     * info if you want to create an HTML image map.<a name="line.420"></a>
    429. 

  429. <span class="sourceLineNo">421</span>     *<a name="line.421"></a>
    430. 

  430. <span class="sourceLineNo">422</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.422"></a>
    431. 

  431. <span class="sourceLineNo">423</span>     * @param quality  the output quality (0.0f to 1.0f).<a name="line.423"></a>
    432. 

  432. <span class="sourceLineNo">424</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.424"></a>
    433. 

  433. <span class="sourceLineNo">425</span>     * @param width  the image width.<a name="line.425"></a>
    434. 

  434. <span class="sourceLineNo">426</span>     * @param height  the image height.<a name="line.426"></a>
    435. 

  435. <span class="sourceLineNo">427</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.427"></a>
    436. 

  436. <span class="sourceLineNo">428</span>     *<a name="line.428"></a>
    437. 

  437. <span class="sourceLineNo">429</span>     * @throws IOException if there are any I/O errors.<a name="line.429"></a>
    438. 

  438. <span class="sourceLineNo">430</span>     */<a name="line.430"></a>
    439. 

  439. <span class="sourceLineNo">431</span>    public static void writeChartAsJPEG(OutputStream out, float quality,<a name="line.431"></a>
    440. 

  440. <span class="sourceLineNo">432</span>            JFreeChart chart, int width, int height, ChartRenderingInfo info)<a name="line.432"></a>
    441. 

  441. <span class="sourceLineNo">433</span>            throws IOException {<a name="line.433"></a>
    442. 

  442. <span class="sourceLineNo">434</span><a name="line.434"></a>
    443. 

  443. <span class="sourceLineNo">435</span>        ParamChecks.nullNotPermitted(out, "out");<a name="line.435"></a>
    444. 

  444. <span class="sourceLineNo">436</span>        ParamChecks.nullNotPermitted(chart, "chart");<a name="line.436"></a>
    445. 

  445. <span class="sourceLineNo">437</span>        BufferedImage image = chart.createBufferedImage(width, height,<a name="line.437"></a>
    446. 

  446. <span class="sourceLineNo">438</span>                BufferedImage.TYPE_INT_RGB, info);<a name="line.438"></a>
    447. 

  447. <span class="sourceLineNo">439</span>        EncoderUtil.writeBufferedImage(image, ImageFormat.JPEG, out, quality);<a name="line.439"></a>
    448. 

  448. <span class="sourceLineNo">440</span><a name="line.440"></a>
    449. 

  449. <span class="sourceLineNo">441</span>    }<a name="line.441"></a>
    450. 

  450. <span class="sourceLineNo">442</span><a name="line.442"></a>
    451. 

  451. <span class="sourceLineNo">443</span>    /**<a name="line.443"></a>
    452. 

  452. <span class="sourceLineNo">444</span>     * Saves a chart to a file in JPEG format.<a name="line.444"></a>
    453. 

  453. <span class="sourceLineNo">445</span>     *<a name="line.445"></a>
    454. 

  454. <span class="sourceLineNo">446</span>     * @param file  the file (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.446"></a>
    455. 

  455. <span class="sourceLineNo">447</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.447"></a>
    456. 

  456. <span class="sourceLineNo">448</span>     * @param width  the image width.<a name="line.448"></a>
    457. 

  457. <span class="sourceLineNo">449</span>     * @param height  the image height.<a name="line.449"></a>
    458. 

  458. <span class="sourceLineNo">450</span>     *<a name="line.450"></a>
    459. 

  459. <span class="sourceLineNo">451</span>     * @throws IOException if there are any I/O errors.<a name="line.451"></a>
    460. 

  460. <span class="sourceLineNo">452</span>     */<a name="line.452"></a>
    461. 

  461. <span class="sourceLineNo">453</span>    public static void saveChartAsJPEG(File file, JFreeChart chart,<a name="line.453"></a>
    462. 

  462. <span class="sourceLineNo">454</span>            int width, int height) throws IOException {<a name="line.454"></a>
    463. 

  463. <span class="sourceLineNo">455</span><a name="line.455"></a>
    464. 

  464. <span class="sourceLineNo">456</span>        // defer argument checking...<a name="line.456"></a>
    465. 

  465. <span class="sourceLineNo">457</span>        saveChartAsJPEG(file, chart, width, height, null);<a name="line.457"></a>
    466. 

  466. <span class="sourceLineNo">458</span><a name="line.458"></a>
    467. 

  467. <span class="sourceLineNo">459</span>    }<a name="line.459"></a>
    468. 

  468. <span class="sourceLineNo">460</span><a name="line.460"></a>
    469. 

  469. <span class="sourceLineNo">461</span>    /**<a name="line.461"></a>
    470. 

  470. <span class="sourceLineNo">462</span>     * Saves a chart to a file in JPEG format.<a name="line.462"></a>
    471. 

  471. <span class="sourceLineNo">463</span>     *<a name="line.463"></a>
    472. 

  472. <span class="sourceLineNo">464</span>     * @param file  the file (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.464"></a>
    473. 

  473. <span class="sourceLineNo">465</span>     * @param quality  the JPEG quality setting.<a name="line.465"></a>
    474. 

  474. <span class="sourceLineNo">466</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.466"></a>
    475. 

  475. <span class="sourceLineNo">467</span>     * @param width  the image width.<a name="line.467"></a>
    476. 

  476. <span class="sourceLineNo">468</span>     * @param height  the image height.<a name="line.468"></a>
    477. 

  477. <span class="sourceLineNo">469</span>     *<a name="line.469"></a>
    478. 

  478. <span class="sourceLineNo">470</span>     * @throws IOException if there are any I/O errors.<a name="line.470"></a>
    479. 

  479. <span class="sourceLineNo">471</span>     */<a name="line.471"></a>
    480. 

  480. <span class="sourceLineNo">472</span>    public static void saveChartAsJPEG(File file, float quality,<a name="line.472"></a>
    481. 

  481. <span class="sourceLineNo">473</span>            JFreeChart chart, int width, int height) throws IOException {<a name="line.473"></a>
    482. 

  482. <span class="sourceLineNo">474</span><a name="line.474"></a>
    483. 

  483. <span class="sourceLineNo">475</span>        // defer argument checking...<a name="line.475"></a>
    484. 

  484. <span class="sourceLineNo">476</span>        saveChartAsJPEG(file, quality, chart, width, height, null);<a name="line.476"></a>
    485. 

  485. <span class="sourceLineNo">477</span><a name="line.477"></a>
    486. 

  486. <span class="sourceLineNo">478</span>    }<a name="line.478"></a>
    487. 

  487. <span class="sourceLineNo">479</span><a name="line.479"></a>
    488. 

  488. <span class="sourceLineNo">480</span>    /**<a name="line.480"></a>
    489. 

  489. <span class="sourceLineNo">481</span>     * Saves a chart to a file in JPEG format.  This method allows you to pass<a name="line.481"></a>
    490. 

  490. <span class="sourceLineNo">482</span>     * in a {@link ChartRenderingInfo} object, to collect information about the<a name="line.482"></a>
    491. 

  491. <span class="sourceLineNo">483</span>     * chart dimensions/entities.  You will need this info if you want to<a name="line.483"></a>
    492. 

  492. <span class="sourceLineNo">484</span>     * create an HTML image map.<a name="line.484"></a>
    493. 

  493. <span class="sourceLineNo">485</span>     *<a name="line.485"></a>
    494. 

  494. <span class="sourceLineNo">486</span>     * @param file  the file name (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.486"></a>
    495. 

  495. <span class="sourceLineNo">487</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.487"></a>
    496. 

  496. <span class="sourceLineNo">488</span>     * @param width  the image width.<a name="line.488"></a>
    497. 

  497. <span class="sourceLineNo">489</span>     * @param height  the image height.<a name="line.489"></a>
    498. 

  498. <span class="sourceLineNo">490</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.490"></a>
    499. 

  499. <span class="sourceLineNo">491</span>     *<a name="line.491"></a>
    500. 

  500. <span class="sourceLineNo">492</span>     * @throws IOException if there are any I/O errors.<a name="line.492"></a>
    501. 

  501. <span class="sourceLineNo">493</span>     */<a name="line.493"></a>
    502. 

  502. <span class="sourceLineNo">494</span>    public static void saveChartAsJPEG(File file, JFreeChart chart,<a name="line.494"></a>
    503. 

  503. <span class="sourceLineNo">495</span>            int width, int height, ChartRenderingInfo info) throws IOException {<a name="line.495"></a>
    504. 

  504. <span class="sourceLineNo">496</span><a name="line.496"></a>
    505. 

  505. <span class="sourceLineNo">497</span>        ParamChecks.nullNotPermitted(file, "file");<a name="line.497"></a>
    506. 

  506. <span class="sourceLineNo">498</span>        ParamChecks.nullNotPermitted(chart, "chart");<a name="line.498"></a>
    507. 

  507. <span class="sourceLineNo">499</span>        OutputStream out = new BufferedOutputStream(new FileOutputStream(file));<a name="line.499"></a>
    508. 

  508. <span class="sourceLineNo">500</span>        try {<a name="line.500"></a>
    509. 

  509. <span class="sourceLineNo">501</span>            writeChartAsJPEG(out, chart, width, height, info);<a name="line.501"></a>
    510. 

  510. <span class="sourceLineNo">502</span>        }<a name="line.502"></a>
    511. 

  511. <span class="sourceLineNo">503</span>        finally {<a name="line.503"></a>
    512. 

  512. <span class="sourceLineNo">504</span>            out.close();<a name="line.504"></a>
    513. 

  513. <span class="sourceLineNo">505</span>        }<a name="line.505"></a>
    514. 

  514. <span class="sourceLineNo">506</span><a name="line.506"></a>
    515. 

  515. <span class="sourceLineNo">507</span>    }<a name="line.507"></a>
    516. 

  516. <span class="sourceLineNo">508</span><a name="line.508"></a>
    517. 

  517. <span class="sourceLineNo">509</span>    /**<a name="line.509"></a>
    518. 

  518. <span class="sourceLineNo">510</span>     * Saves a chart to a file in JPEG format.  This method allows you to pass<a name="line.510"></a>
    519. 

  519. <span class="sourceLineNo">511</span>     * in a {@link ChartRenderingInfo} object, to collect information about the<a name="line.511"></a>
    520. 

  520. <span class="sourceLineNo">512</span>     * chart dimensions/entities.  You will need this info if you want to<a name="line.512"></a>
    521. 

  521. <span class="sourceLineNo">513</span>     * create an HTML image map.<a name="line.513"></a>
    522. 

  522. <span class="sourceLineNo">514</span>     *<a name="line.514"></a>
    523. 

  523. <span class="sourceLineNo">515</span>     * @param file  the file name (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.515"></a>
    524. 

  524. <span class="sourceLineNo">516</span>     * @param quality  the quality setting.<a name="line.516"></a>
    525. 

  525. <span class="sourceLineNo">517</span>     * @param chart  the chart (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.517"></a>
    526. 

  526. <span class="sourceLineNo">518</span>     * @param width  the image width.<a name="line.518"></a>
    527. 

  527. <span class="sourceLineNo">519</span>     * @param height  the image height.<a name="line.519"></a>
    528. 

  528. <span class="sourceLineNo">520</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.520"></a>
    529. 

  529. <span class="sourceLineNo">521</span>     *<a name="line.521"></a>
    530. 

  530. <span class="sourceLineNo">522</span>     * @throws IOException if there are any I/O errors.<a name="line.522"></a>
    531. 

  531. <span class="sourceLineNo">523</span>     */<a name="line.523"></a>
    532. 

  532. <span class="sourceLineNo">524</span>    public static void saveChartAsJPEG(File file, float quality,<a name="line.524"></a>
    533. 

  533. <span class="sourceLineNo">525</span>            JFreeChart chart, int width, int height,<a name="line.525"></a>
    534. 

  534. <span class="sourceLineNo">526</span>            ChartRenderingInfo info) throws IOException {<a name="line.526"></a>
    535. 

  535. <span class="sourceLineNo">527</span><a name="line.527"></a>
    536. 

  536. <span class="sourceLineNo">528</span>        ParamChecks.nullNotPermitted(file, "file");<a name="line.528"></a>
    537. 

  537. <span class="sourceLineNo">529</span>        ParamChecks.nullNotPermitted(chart, "chart");<a name="line.529"></a>
    538. 

  538. <span class="sourceLineNo">530</span>        OutputStream out = new BufferedOutputStream(new FileOutputStream(<a name="line.530"></a>
    539. 

  539. <span class="sourceLineNo">531</span>                file));<a name="line.531"></a>
    540. 

  540. <span class="sourceLineNo">532</span>        try {<a name="line.532"></a>
    541. 

  541. <span class="sourceLineNo">533</span>            writeChartAsJPEG(out, quality, chart, width, height, info);<a name="line.533"></a>
    542. 

  542. <span class="sourceLineNo">534</span>        }<a name="line.534"></a>
    543. 

  543. <span class="sourceLineNo">535</span>        finally {<a name="line.535"></a>
    544. 

  544. <span class="sourceLineNo">536</span>            out.close();<a name="line.536"></a>
    545. 

  545. <span class="sourceLineNo">537</span>        }<a name="line.537"></a>
    546. 

  546. <span class="sourceLineNo">538</span><a name="line.538"></a>
    547. 

  547. <span class="sourceLineNo">539</span>    }<a name="line.539"></a>
    548. 

  548. <span class="sourceLineNo">540</span><a name="line.540"></a>
    549. 

  549. <span class="sourceLineNo">541</span>    /**<a name="line.541"></a>
    550. 

  550. <span class="sourceLineNo">542</span>     * Writes a {@link BufferedImage} to an output stream in JPEG format.<a name="line.542"></a>
    551. 

  551. <span class="sourceLineNo">543</span>     *<a name="line.543"></a>
    552. 

  552. <span class="sourceLineNo">544</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.544"></a>
    553. 

  553. <span class="sourceLineNo">545</span>     * @param image  the image (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.545"></a>
    554. 

  554. <span class="sourceLineNo">546</span>     *<a name="line.546"></a>
    555. 

  555. <span class="sourceLineNo">547</span>     * @throws IOException if there are any I/O errors.<a name="line.547"></a>
    556. 

  556. <span class="sourceLineNo">548</span>     */<a name="line.548"></a>
    557. 

  557. <span class="sourceLineNo">549</span>    public static void writeBufferedImageAsJPEG(OutputStream out,<a name="line.549"></a>
    558. 

  558. <span class="sourceLineNo">550</span>            BufferedImage image) throws IOException {<a name="line.550"></a>
    559. 

  559. <span class="sourceLineNo">551</span><a name="line.551"></a>
    560. 

  560. <span class="sourceLineNo">552</span>        // defer argument checking...<a name="line.552"></a>
    561. 

  561. <span class="sourceLineNo">553</span>        writeBufferedImageAsJPEG(out, 0.75f, image);<a name="line.553"></a>
    562. 

  562. <span class="sourceLineNo">554</span><a name="line.554"></a>
    563. 

  563. <span class="sourceLineNo">555</span>    }<a name="line.555"></a>
    564. 

  564. <span class="sourceLineNo">556</span><a name="line.556"></a>
    565. 

  565. <span class="sourceLineNo">557</span>    /**<a name="line.557"></a>
    566. 

  566. <span class="sourceLineNo">558</span>     * Writes a {@link BufferedImage} to an output stream in JPEG format.<a name="line.558"></a>
    567. 

  567. <span class="sourceLineNo">559</span>     *<a name="line.559"></a>
    568. 

  568. <span class="sourceLineNo">560</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.560"></a>
    569. 

  569. <span class="sourceLineNo">561</span>     * @param quality  the image quality (0.0f to 1.0f).<a name="line.561"></a>
    570. 

  570. <span class="sourceLineNo">562</span>     * @param image  the image (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.562"></a>
    571. 

  571. <span class="sourceLineNo">563</span>     *<a name="line.563"></a>
    572. 

  572. <span class="sourceLineNo">564</span>     * @throws IOException if there are any I/O errors.<a name="line.564"></a>
    573. 

  573. <span class="sourceLineNo">565</span>     */<a name="line.565"></a>
    574. 

  574. <span class="sourceLineNo">566</span>    public static void writeBufferedImageAsJPEG(OutputStream out, float quality,<a name="line.566"></a>
    575. 

  575. <span class="sourceLineNo">567</span>            BufferedImage image) throws IOException {<a name="line.567"></a>
    576. 

  576. <span class="sourceLineNo">568</span><a name="line.568"></a>
    577. 

  577. <span class="sourceLineNo">569</span>        EncoderUtil.writeBufferedImage(image, ImageFormat.JPEG, out, quality);<a name="line.569"></a>
    578. 

  578. <span class="sourceLineNo">570</span><a name="line.570"></a>
    579. 

  579. <span class="sourceLineNo">571</span>    }<a name="line.571"></a>
    580. 

  580. <span class="sourceLineNo">572</span><a name="line.572"></a>
    581. 

  581. <span class="sourceLineNo">573</span>    /**<a name="line.573"></a>
    582. 

  582. <span class="sourceLineNo">574</span>     * Writes a {@link BufferedImage} to an output stream in PNG format.<a name="line.574"></a>
    583. 

  583. <span class="sourceLineNo">575</span>     *<a name="line.575"></a>
    584. 

  584. <span class="sourceLineNo">576</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.576"></a>
    585. 

  585. <span class="sourceLineNo">577</span>     * @param image  the image (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.577"></a>
    586. 

  586. <span class="sourceLineNo">578</span>     *<a name="line.578"></a>
    587. 

  587. <span class="sourceLineNo">579</span>     * @throws IOException if there are any I/O errors.<a name="line.579"></a>
    588. 

  588. <span class="sourceLineNo">580</span>     */<a name="line.580"></a>
    589. 

  589. <span class="sourceLineNo">581</span>    public static void writeBufferedImageAsPNG(OutputStream out,<a name="line.581"></a>
    590. 

  590. <span class="sourceLineNo">582</span>            BufferedImage image) throws IOException {<a name="line.582"></a>
    591. 

  591. <span class="sourceLineNo">583</span><a name="line.583"></a>
    592. 

  592. <span class="sourceLineNo">584</span>        EncoderUtil.writeBufferedImage(image, ImageFormat.PNG, out);<a name="line.584"></a>
    593. 

  593. <span class="sourceLineNo">585</span><a name="line.585"></a>
    594. 

  594. <span class="sourceLineNo">586</span>    }<a name="line.586"></a>
    595. 

  595. <span class="sourceLineNo">587</span><a name="line.587"></a>
    596. 

  596. <span class="sourceLineNo">588</span>    /**<a name="line.588"></a>
    597. 

  597. <span class="sourceLineNo">589</span>     * Writes a {@link BufferedImage} to an output stream in PNG format.<a name="line.589"></a>
    598. 

  598. <span class="sourceLineNo">590</span>     *<a name="line.590"></a>
    599. 

  599. <span class="sourceLineNo">591</span>     * @param out  the output stream (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.591"></a>
    600. 

  600. <span class="sourceLineNo">592</span>     * @param image  the image (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.592"></a>
    601. 

  601. <span class="sourceLineNo">593</span>     * @param encodeAlpha  encode alpha?<a name="line.593"></a>
    602. 

  602. <span class="sourceLineNo">594</span>     * @param compression  the compression level (0-9).<a name="line.594"></a>
    603. 

  603. <span class="sourceLineNo">595</span>     *<a name="line.595"></a>
    604. 

  604. <span class="sourceLineNo">596</span>     * @throws IOException if there are any I/O errors.<a name="line.596"></a>
    605. 

  605. <span class="sourceLineNo">597</span>     */<a name="line.597"></a>
    606. 

  606. <span class="sourceLineNo">598</span>    public static void writeBufferedImageAsPNG(OutputStream out,<a name="line.598"></a>
    607. 

  607. <span class="sourceLineNo">599</span>            BufferedImage image, boolean encodeAlpha, int compression)<a name="line.599"></a>
    608. 

  608. <span class="sourceLineNo">600</span>            throws IOException {<a name="line.600"></a>
    609. 

  609. <span class="sourceLineNo">601</span><a name="line.601"></a>
    610. 

  610. <span class="sourceLineNo">602</span>        EncoderUtil.writeBufferedImage(image, ImageFormat.PNG, out,<a name="line.602"></a>
    611. 

  611. <span class="sourceLineNo">603</span>                compression, encodeAlpha);<a name="line.603"></a>
    612. 

  612. <span class="sourceLineNo">604</span>    }<a name="line.604"></a>
    613. 

  613. <span class="sourceLineNo">605</span><a name="line.605"></a>
    614. 

  614. <span class="sourceLineNo">606</span>    /**<a name="line.606"></a>
    615. 

  615. <span class="sourceLineNo">607</span>     * Encodes a {@link BufferedImage} to PNG format.<a name="line.607"></a>
    616. 

  616. <span class="sourceLineNo">608</span>     *<a name="line.608"></a>
    617. 

  617. <span class="sourceLineNo">609</span>     * @param image  the image (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.609"></a>
    618. 

  618. <span class="sourceLineNo">610</span>     *<a name="line.610"></a>
    619. 

  619. <span class="sourceLineNo">611</span>     * @return A byte array in PNG format.<a name="line.611"></a>
    620. 

  620. <span class="sourceLineNo">612</span>     *<a name="line.612"></a>
    621. 

  621. <span class="sourceLineNo">613</span>     * @throws IOException if there is an I/O problem.<a name="line.613"></a>
    622. 

  622. <span class="sourceLineNo">614</span>     */<a name="line.614"></a>
    623. 

  623. <span class="sourceLineNo">615</span>    public static byte[] encodeAsPNG(BufferedImage image) throws IOException {<a name="line.615"></a>
    624. 

  624. <span class="sourceLineNo">616</span>        return EncoderUtil.encode(image, ImageFormat.PNG);<a name="line.616"></a>
    625. 

  625. <span class="sourceLineNo">617</span>    }<a name="line.617"></a>
    626. 

  626. <span class="sourceLineNo">618</span><a name="line.618"></a>
    627. 

  627. <span class="sourceLineNo">619</span>    /**<a name="line.619"></a>
    628. 

  628. <span class="sourceLineNo">620</span>     * Encodes a {@link BufferedImage} to PNG format.<a name="line.620"></a>
    629. 

  629. <span class="sourceLineNo">621</span>     *<a name="line.621"></a>
    630. 

  630. <span class="sourceLineNo">622</span>     * @param image  the image (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.622"></a>
    631. 

  631. <span class="sourceLineNo">623</span>     * @param encodeAlpha  encode alpha?<a name="line.623"></a>
    632. 

  632. <span class="sourceLineNo">624</span>     * @param compression  the PNG compression level (0-9).<a name="line.624"></a>
    633. 

  633. <span class="sourceLineNo">625</span>     *<a name="line.625"></a>
    634. 

  634. <span class="sourceLineNo">626</span>     * @return The byte array in PNG format.<a name="line.626"></a>
    635. 

  635. <span class="sourceLineNo">627</span>     *<a name="line.627"></a>
    636. 

  636. <span class="sourceLineNo">628</span>     * @throws IOException if there is an I/O problem.<a name="line.628"></a>
    637. 

  637. <span class="sourceLineNo">629</span>     */<a name="line.629"></a>
    638. 

  638. <span class="sourceLineNo">630</span>    public static byte[] encodeAsPNG(BufferedImage image, boolean encodeAlpha,<a name="line.630"></a>
    639. 

  639. <span class="sourceLineNo">631</span>            int compression) throws IOException {<a name="line.631"></a>
    640. 

  640. <span class="sourceLineNo">632</span>        return EncoderUtil.encode(image, ImageFormat.PNG, compression,<a name="line.632"></a>
    641. 

  641. <span class="sourceLineNo">633</span>                encodeAlpha);<a name="line.633"></a>
    642. 

  642. <span class="sourceLineNo">634</span>    }<a name="line.634"></a>
    643. 

  643. <span class="sourceLineNo">635</span><a name="line.635"></a>
    644. 

  644. <span class="sourceLineNo">636</span>    /**<a name="line.636"></a>
    645. 

  645. <span class="sourceLineNo">637</span>     * Writes an image map to an output stream.<a name="line.637"></a>
    646. 

  646. <span class="sourceLineNo">638</span>     *<a name="line.638"></a>
    647. 

  647. <span class="sourceLineNo">639</span>     * @param writer  the writer (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.639"></a>
    648. 

  648. <span class="sourceLineNo">640</span>     * @param name  the map name (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.640"></a>
    649. 

  649. <span class="sourceLineNo">641</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.641"></a>
    650. 

  650. <span class="sourceLineNo">642</span>     * @param useOverLibForToolTips  whether to use OverLIB for tooltips<a name="line.642"></a>
    651. 

  651. <span class="sourceLineNo">643</span>     *                               (http://www.bosrup.com/web/overlib/).<a name="line.643"></a>
    652. 

  652. <span class="sourceLineNo">644</span>     *<a name="line.644"></a>
    653. 

  653. <span class="sourceLineNo">645</span>     * @throws IOException if there are any I/O errors.<a name="line.645"></a>
    654. 

  654. <span class="sourceLineNo">646</span>     */<a name="line.646"></a>
    655. 

  655. <span class="sourceLineNo">647</span>    public static void writeImageMap(PrintWriter writer, String name,<a name="line.647"></a>
    656. 

  656. <span class="sourceLineNo">648</span>            ChartRenderingInfo info, boolean useOverLibForToolTips)<a name="line.648"></a>
    657. 

  657. <span class="sourceLineNo">649</span>            throws IOException {<a name="line.649"></a>
    658. 

  658. <span class="sourceLineNo">650</span><a name="line.650"></a>
    659. 

  659. <span class="sourceLineNo">651</span>        ToolTipTagFragmentGenerator toolTipTagFragmentGenerator;<a name="line.651"></a>
    660. 

  660. <span class="sourceLineNo">652</span>        if (useOverLibForToolTips) {<a name="line.652"></a>
    661. 

  661. <span class="sourceLineNo">653</span>            toolTipTagFragmentGenerator<a name="line.653"></a>
    662. 

  662. <span class="sourceLineNo">654</span>                    = new OverLIBToolTipTagFragmentGenerator();<a name="line.654"></a>
    663. 

  663. <span class="sourceLineNo">655</span>        }<a name="line.655"></a>
    664. 

  664. <span class="sourceLineNo">656</span>        else {<a name="line.656"></a>
    665. 

  665. <span class="sourceLineNo">657</span>            toolTipTagFragmentGenerator<a name="line.657"></a>
    666. 

  666. <span class="sourceLineNo">658</span>                    = new StandardToolTipTagFragmentGenerator();<a name="line.658"></a>
    667. 

  667. <span class="sourceLineNo">659</span>        }<a name="line.659"></a>
    668. 

  668. <span class="sourceLineNo">660</span>        ImageMapUtilities.writeImageMap(writer, name, info,<a name="line.660"></a>
    669. 

  669. <span class="sourceLineNo">661</span>                toolTipTagFragmentGenerator,<a name="line.661"></a>
    670. 

  670. <span class="sourceLineNo">662</span>                new StandardURLTagFragmentGenerator());<a name="line.662"></a>
    671. 

  671. <span class="sourceLineNo">663</span><a name="line.663"></a>
    672. 

  672. <span class="sourceLineNo">664</span>    }<a name="line.664"></a>
    673. 

  673. <span class="sourceLineNo">665</span><a name="line.665"></a>
    674. 

  674. <span class="sourceLineNo">666</span>    /**<a name="line.666"></a>
    675. 

  675. <span class="sourceLineNo">667</span>     * Writes an image map to the specified writer.<a name="line.667"></a>
    676. 

  676. <span class="sourceLineNo">668</span>     *<a name="line.668"></a>
    677. 

  677. <span class="sourceLineNo">669</span>     * @param writer  the writer (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.669"></a>
    678. 

  678. <span class="sourceLineNo">670</span>     * @param name  the map name (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.670"></a>
    679. 

  679. <span class="sourceLineNo">671</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.671"></a>
    680. 

  680. <span class="sourceLineNo">672</span>     * @param toolTipTagFragmentGenerator  a generator for the HTML fragment<a name="line.672"></a>
    681. 

  681. <span class="sourceLineNo">673</span>     *     that will contain the tooltip text (&lt;code&gt;null&lt;/code&gt; not permitted<a name="line.673"></a>
    682. 

  682. <span class="sourceLineNo">674</span>     *     if &lt;code&gt;info&lt;/code&gt; contains tooltip information).<a name="line.674"></a>
    683. 

  683. <span class="sourceLineNo">675</span>     * @param urlTagFragmentGenerator  a generator for the HTML fragment that<a name="line.675"></a>
    684. 

  684. <span class="sourceLineNo">676</span>     *     will contain the URL reference (&lt;code&gt;null&lt;/code&gt; not permitted if<a name="line.676"></a>
    685. 

  685. <span class="sourceLineNo">677</span>     *     &lt;code&gt;info&lt;/code&gt; contains URLs).<a name="line.677"></a>
    686. 

  686. <span class="sourceLineNo">678</span>     *<a name="line.678"></a>
    687. 

  687. <span class="sourceLineNo">679</span>     * @throws IOException if there are any I/O errors.<a name="line.679"></a>
    688. 

  688. <span class="sourceLineNo">680</span>     */<a name="line.680"></a>
    689. 

  689. <span class="sourceLineNo">681</span>    public static void writeImageMap(PrintWriter writer, String name,<a name="line.681"></a>
    690. 

  690. <span class="sourceLineNo">682</span>            ChartRenderingInfo info,<a name="line.682"></a>
    691. 

  691. <span class="sourceLineNo">683</span>            ToolTipTagFragmentGenerator toolTipTagFragmentGenerator,<a name="line.683"></a>
    692. 

  692. <span class="sourceLineNo">684</span>            URLTagFragmentGenerator urlTagFragmentGenerator)<a name="line.684"></a>
    693. 

  693. <span class="sourceLineNo">685</span>            throws IOException {<a name="line.685"></a>
    694. 

  694. <span class="sourceLineNo">686</span><a name="line.686"></a>
    695. 

  695. <span class="sourceLineNo">687</span>        writer.println(ImageMapUtilities.getImageMap(name, info,<a name="line.687"></a>
    696. 

  696. <span class="sourceLineNo">688</span>                toolTipTagFragmentGenerator, urlTagFragmentGenerator));<a name="line.688"></a>
    697. 

  697. <span class="sourceLineNo">689</span>    }<a name="line.689"></a>
    698. 

  698. <span class="sourceLineNo">690</span><a name="line.690"></a>
    699. 

  699. <span class="sourceLineNo">691</span>    /**<a name="line.691"></a>
    700. 

  700. <span class="sourceLineNo">692</span>     * Creates an HTML image map.  This method maps to<a name="line.692"></a>
    701. 

  701. <span class="sourceLineNo">693</span>     * {@link ImageMapUtilities#getImageMap(String, ChartRenderingInfo,<a name="line.693"></a>
    702. 

  702. <span class="sourceLineNo">694</span>     * ToolTipTagFragmentGenerator, URLTagFragmentGenerator)}, using default<a name="line.694"></a>
    703. 

  703. <span class="sourceLineNo">695</span>     * generators.<a name="line.695"></a>
    704. 

  704. <span class="sourceLineNo">696</span>     *<a name="line.696"></a>
    705. 

  705. <span class="sourceLineNo">697</span>     * @param name  the map name (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.697"></a>
    706. 

  706. <span class="sourceLineNo">698</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.698"></a>
    707. 

  707. <span class="sourceLineNo">699</span>     *<a name="line.699"></a>
    708. 

  708. <span class="sourceLineNo">700</span>     * @return The map tag.<a name="line.700"></a>
    709. 

  709. <span class="sourceLineNo">701</span>     */<a name="line.701"></a>
    710. 

  710. <span class="sourceLineNo">702</span>    public static String getImageMap(String name, ChartRenderingInfo info) {<a name="line.702"></a>
    711. 

  711. <span class="sourceLineNo">703</span>        return ImageMapUtilities.getImageMap(name, info,<a name="line.703"></a>
    712. 

  712. <span class="sourceLineNo">704</span>                new StandardToolTipTagFragmentGenerator(),<a name="line.704"></a>
    713. 

  713. <span class="sourceLineNo">705</span>                new StandardURLTagFragmentGenerator());<a name="line.705"></a>
    714. 

  714. <span class="sourceLineNo">706</span>    }<a name="line.706"></a>
    715. 

  715. <span class="sourceLineNo">707</span><a name="line.707"></a>
    716. 

  716. <span class="sourceLineNo">708</span>    /**<a name="line.708"></a>
    717. 

  717. <span class="sourceLineNo">709</span>     * Creates an HTML image map.  This method maps directly to<a name="line.709"></a>
    718. 

  718. <span class="sourceLineNo">710</span>     * {@link ImageMapUtilities#getImageMap(String, ChartRenderingInfo,<a name="line.710"></a>
    719. 

  719. <span class="sourceLineNo">711</span>     * ToolTipTagFragmentGenerator, URLTagFragmentGenerator)}.<a name="line.711"></a>
    720. 

  720. <span class="sourceLineNo">712</span>     *<a name="line.712"></a>
    721. 

  721. <span class="sourceLineNo">713</span>     * @param name  the map name (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.713"></a>
    722. 

  722. <span class="sourceLineNo">714</span>     * @param info  the chart rendering info (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.714"></a>
    723. 

  723. <span class="sourceLineNo">715</span>     * @param toolTipTagFragmentGenerator  a generator for the HTML fragment<a name="line.715"></a>
    724. 

  724. <span class="sourceLineNo">716</span>     *     that will contain the tooltip text (&lt;code&gt;null&lt;/code&gt; not permitted<a name="line.716"></a>
    725. 

  725. <span class="sourceLineNo">717</span>     *     if &lt;code&gt;info&lt;/code&gt; contains tooltip information).<a name="line.717"></a>
    726. 

  726. <span class="sourceLineNo">718</span>     * @param urlTagFragmentGenerator  a generator for the HTML fragment that<a name="line.718"></a>
    727. 

  727. <span class="sourceLineNo">719</span>     *     will contain the URL reference (&lt;code&gt;null&lt;/code&gt; not permitted if<a name="line.719"></a>
    728. 

  728. <span class="sourceLineNo">720</span>     *     &lt;code&gt;info&lt;/code&gt; contains URLs).<a name="line.720"></a>
    729. 

  729. <span class="sourceLineNo">721</span>     *<a name="line.721"></a>
    730. 

  730. <span class="sourceLineNo">722</span>     * @return The map tag.<a name="line.722"></a>
    731. 

  731. <span class="sourceLineNo">723</span>     */<a name="line.723"></a>
    732. 

  732. <span class="sourceLineNo">724</span>    public static String getImageMap(String name, ChartRenderingInfo info,<a name="line.724"></a>
    733. 

  733. <span class="sourceLineNo">725</span>            ToolTipTagFragmentGenerator toolTipTagFragmentGenerator,<a name="line.725"></a>
    734. 

  734. <span class="sourceLineNo">726</span>            URLTagFragmentGenerator urlTagFragmentGenerator) {<a name="line.726"></a>
    735. 

  735. <span class="sourceLineNo">727</span><a name="line.727"></a>
    736. 

  736. <span class="sourceLineNo">728</span>        return ImageMapUtilities.getImageMap(name, info,<a name="line.728"></a>
    737. 

  737. <span class="sourceLineNo">729</span>                toolTipTagFragmentGenerator, urlTagFragmentGenerator);<a name="line.729"></a>
    738. 

  738. <span class="sourceLineNo">730</span><a name="line.730"></a>
    739. 

  739. <span class="sourceLineNo">731</span>    }<a name="line.731"></a>
    740. 

  740. <span class="sourceLineNo">732</span><a name="line.732"></a>
    741. 

  741. <span class="sourceLineNo">733</span>}<a name="line.733"></a>
    742. 

  742. 

  743. 

  744. 

  745. 

  746. 

  747. 

  748. 

  749. 

  750. 

  751. 

  752. 

  753. 

  754. 

  755. 

  756. 

  757. 

  758. 

  759. 

  760. 

  761. 

  762. 

  763. 

  764. 

  765. 

  766. 

  767. 

  768. 

  769. 

  770. 

  771. 

  772. 

  773. 

  774. 

  775. 

  776. 

  777. 

  778. 

  779. 

  780. 

  781. 

  782. 

  783. 

  784. 

  785. 

  786. 

  787. 

  788. 

  789. 

  790. 

  791. 

  792. 

  793. 

  794. 

  795. 

  796. 

  797. 

  798. 

  799. 

  800. 

  801. 

  802. </pre>
    803. 

  803. </div>
    804. 

  804. </body>
    805. 

  805. </html>
    806.