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jfreechart1。0。2的api。

<FONT color="green">160</FONT>               JMenuItem auto = new JMenuItem("Auto Range");<a name="line.160"></a>
<FONT color="green">161</FONT>               auto.setActionCommand(POLAR_AUTO_RANGE_ACTION_COMMAND);<a name="line.161"></a>
<FONT color="green">162</FONT>               auto.addActionListener(this);<a name="line.162"></a>
<FONT color="green">163</FONT>              <a name="line.163"></a>
<FONT color="green">164</FONT>               if (zoomInIndex != -1) {<a name="line.164"></a>
<FONT color="green">165</FONT>                   result.remove(zoomInIndex);<a name="line.165"></a>
<FONT color="green">166</FONT>               }<a name="line.166"></a>
<FONT color="green">167</FONT>               else {<a name="line.167"></a>
<FONT color="green">168</FONT>                   zoomInIndex = result.getComponentCount() - 1;<a name="line.168"></a>
<FONT color="green">169</FONT>               }<a name="line.169"></a>
<FONT color="green">170</FONT>               result.add(zoomIn, zoomInIndex);<a name="line.170"></a>
<FONT color="green">171</FONT>               if (zoomOutIndex != -1) {<a name="line.171"></a>
<FONT color="green">172</FONT>                   result.remove(zoomOutIndex);<a name="line.172"></a>
<FONT color="green">173</FONT>               }<a name="line.173"></a>
<FONT color="green">174</FONT>               else {<a name="line.174"></a>
<FONT color="green">175</FONT>                   zoomOutIndex = zoomInIndex + 1;<a name="line.175"></a>
<FONT color="green">176</FONT>               }<a name="line.176"></a>
<FONT color="green">177</FONT>               result.add(zoomOut, zoomOutIndex);<a name="line.177"></a>
<FONT color="green">178</FONT>               if (autoIndex != -1) {<a name="line.178"></a>
<FONT color="green">179</FONT>                   result.remove(autoIndex);<a name="line.179"></a>
<FONT color="green">180</FONT>               }<a name="line.180"></a>
<FONT color="green">181</FONT>               else {<a name="line.181"></a>
<FONT color="green">182</FONT>                   autoIndex = zoomOutIndex + 1;<a name="line.182"></a>
<FONT color="green">183</FONT>               }<a name="line.183"></a>
<FONT color="green">184</FONT>               result.add(auto, autoIndex);<a name="line.184"></a>
<FONT color="green">185</FONT>           }<a name="line.185"></a>
<FONT color="green">186</FONT>           return result;<a name="line.186"></a>
<FONT color="green">187</FONT>        }<a name="line.187"></a>
<FONT color="green">188</FONT>       <a name="line.188"></a>
<FONT color="green">189</FONT>        /**<a name="line.189"></a>
<FONT color="green">190</FONT>         * Handles action events generated by the popup menu.<a name="line.190"></a>
<FONT color="green">191</FONT>         *<a name="line.191"></a>
<FONT color="green">192</FONT>         * @param event  the event.<a name="line.192"></a>
<FONT color="green">193</FONT>         */<a name="line.193"></a>
<FONT color="green">194</FONT>        public void actionPerformed(ActionEvent event) {<a name="line.194"></a>
<FONT color="green">195</FONT>           String command = event.getActionCommand();<a name="line.195"></a>
<FONT color="green">196</FONT>           <a name="line.196"></a>
<FONT color="green">197</FONT>           if (command.equals(POLAR_ZOOM_IN_ACTION_COMMAND)) {<a name="line.197"></a>
<FONT color="green">198</FONT>               PolarPlot plot = (PolarPlot) getChart().getPlot();<a name="line.198"></a>
<FONT color="green">199</FONT>               plot.zoom(0.5);<a name="line.199"></a>
<FONT color="green">200</FONT>           }<a name="line.200"></a>
<FONT color="green">201</FONT>           else if (command.equals(POLAR_ZOOM_OUT_ACTION_COMMAND)) {<a name="line.201"></a>
<FONT color="green">202</FONT>               PolarPlot plot = (PolarPlot) getChart().getPlot();<a name="line.202"></a>
<FONT color="green">203</FONT>               plot.zoom(2.0);<a name="line.203"></a>
<FONT color="green">204</FONT>           }<a name="line.204"></a>
<FONT color="green">205</FONT>           else if (command.equals(POLAR_AUTO_RANGE_ACTION_COMMAND)) {<a name="line.205"></a>
<FONT color="green">206</FONT>               PolarPlot plot = (PolarPlot) getChart().getPlot();<a name="line.206"></a>
<FONT color="green">207</FONT>               plot.getAxis().setAutoRange(true);<a name="line.207"></a>
<FONT color="green">208</FONT>           }<a name="line.208"></a>
<FONT color="green">209</FONT>           else {<a name="line.209"></a>
<FONT color="green">210</FONT>               super.actionPerformed(event);<a name="line.210"></a>
<FONT color="green">211</FONT>           }<a name="line.211"></a>
<FONT color="green">212</FONT>        }<a name="line.212"></a>
<FONT color="green">213</FONT>    <a name="line.213"></a>
<FONT color="green">214</FONT>        // ----------------------<a name="line.214"></a>
<FONT color="green">215</FONT>        // --- Public Methods ---<a name="line.215"></a>
<FONT color="green">216</FONT>        // ----------------------<a name="line.216"></a>
<FONT color="green">217</FONT>    <a name="line.217"></a>
<FONT color="green">218</FONT>        // -----------------------<a name="line.218"></a>
<FONT color="green">219</FONT>        // --- Private Methods ---<a name="line.219"></a>
<FONT color="green">220</FONT>        // -----------------------<a name="line.220"></a>
<FONT color="green">221</FONT>       <a name="line.221"></a>
<FONT color="green">222</FONT>        /**<a name="line.222"></a>
<FONT color="green">223</FONT>         * Test that the chart is using an xy plot with time as the domain axis.<a name="line.223"></a>
<FONT color="green">224</FONT>         * <a name="line.224"></a>
<FONT color="green">225</FONT>         * @param chart  the chart.<a name="line.225"></a>
<FONT color="green">226</FONT>         */<a name="line.226"></a>
<FONT color="green">227</FONT>        private void checkChart(JFreeChart chart) {<a name="line.227"></a>
<FONT color="green">228</FONT>            Plot plot = chart.getPlot();<a name="line.228"></a>
<FONT color="green">229</FONT>            if (!(plot instanceof PolarPlot)) {<a name="line.229"></a>
<FONT color="green">230</FONT>                throw new IllegalArgumentException("plot is not a PolarPlot");<a name="line.230"></a>
<FONT color="green">231</FONT>           }<a name="line.231"></a>
<FONT color="green">232</FONT>        }<a name="line.232"></a>
<FONT color="green">233</FONT>       <a name="line.233"></a>
<FONT color="green">234</FONT>        /**<a name="line.234"></a>
<FONT color="green">235</FONT>         * Returns the index of an item in a popup menu.<a name="line.235"></a>
<FONT color="green">236</FONT>         * <a name="line.236"></a>
<FONT color="green">237</FONT>         * @param menu  the menu.<a name="line.237"></a>
<FONT color="green">238</FONT>         * @param text  the label.<a name="line.238"></a>
<FONT color="green">239</FONT>         * <a name="line.239"></a>
<FONT color="green">240</FONT>         * @return The item index.<a name="line.240"></a>
<FONT color="green">241</FONT>         */<a name="line.241"></a>
<FONT color="green">242</FONT>        private int getPopupMenuItem(JPopupMenu menu, String text) {<a name="line.242"></a>
<FONT color="green">243</FONT>            int index = -1;<a name="line.243"></a>
<FONT color="green">244</FONT>            for (int i = 0; (index == -1) &amp;&amp; (i &lt; menu.getComponentCount()); i++) {<a name="line.244"></a>
<FONT color="green">245</FONT>                Component comp = menu.getComponent(i);<a name="line.245"></a>
<FONT color="green">246</FONT>                if (comp instanceof JMenuItem) {<a name="line.246"></a>
<FONT color="green">247</FONT>                    JMenuItem item = (JMenuItem) comp;<a name="line.247"></a>
<FONT color="green">248</FONT>                    if (text.equals(item.getText())) {<a name="line.248"></a>
<FONT color="green">249</FONT>                        index = i;<a name="line.249"></a>
<FONT color="green">250</FONT>                    }<a name="line.250"></a>
<FONT color="green">251</FONT>                }<a name="line.251"></a>
<FONT color="green">252</FONT>           }<a name="line.252"></a>
<FONT color="green">253</FONT>           return index;<a name="line.253"></a>
<FONT color="green">254</FONT>        }<a name="line.254"></a>
<FONT color="green">255</FONT>    <a name="line.255"></a>
<FONT color="green">256</FONT>    }<a name="line.256"></a>




























































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