abstractxyitemrenderer.html

jfreechart1。0。2的api。

<FONT color="green">139</FONT>    import org.jfree.ui.RectangleInsets;<a name="line.139"></a>
<FONT color="green">140</FONT>    import org.jfree.util.ObjectList;<a name="line.140"></a>
<FONT color="green">141</FONT>    import org.jfree.util.ObjectUtilities;<a name="line.141"></a>
<FONT color="green">142</FONT>    import org.jfree.util.PublicCloneable;<a name="line.142"></a>
<FONT color="green">143</FONT>    <a name="line.143"></a>
<FONT color="green">144</FONT>    /**<a name="line.144"></a>
<FONT color="green">145</FONT>     * A base class that can be used to create new {@link XYItemRenderer} <a name="line.145"></a>
<FONT color="green">146</FONT>     * implementations.<a name="line.146"></a>
<FONT color="green">147</FONT>     */<a name="line.147"></a>
<FONT color="green">148</FONT>    public abstract class AbstractXYItemRenderer extends AbstractRenderer<a name="line.148"></a>
<FONT color="green">149</FONT>                                                 implements XYItemRenderer,<a name="line.149"></a>
<FONT color="green">150</FONT>                                                            Cloneable,<a name="line.150"></a>
<FONT color="green">151</FONT>                                                            Serializable {<a name="line.151"></a>
<FONT color="green">152</FONT>    <a name="line.152"></a>
<FONT color="green">153</FONT>        /** For serialization. */<a name="line.153"></a>
<FONT color="green">154</FONT>        private static final long serialVersionUID = 8019124836026607990L;<a name="line.154"></a>
<FONT color="green">155</FONT>        <a name="line.155"></a>
<FONT color="green">156</FONT>        /** The plot. */<a name="line.156"></a>
<FONT color="green">157</FONT>        private XYPlot plot;<a name="line.157"></a>
<FONT color="green">158</FONT>        <a name="line.158"></a>
<FONT color="green">159</FONT>        /** The item label generator for ALL series. */<a name="line.159"></a>
<FONT color="green">160</FONT>        private XYItemLabelGenerator itemLabelGenerator;<a name="line.160"></a>
<FONT color="green">161</FONT>    <a name="line.161"></a>
<FONT color="green">162</FONT>        /** A list of item label generators (one per series). */<a name="line.162"></a>
<FONT color="green">163</FONT>        private ObjectList itemLabelGeneratorList;<a name="line.163"></a>
<FONT color="green">164</FONT>    <a name="line.164"></a>
<FONT color="green">165</FONT>        /** The base item label generator. */<a name="line.165"></a>
<FONT color="green">166</FONT>        private XYItemLabelGenerator baseItemLabelGenerator;<a name="line.166"></a>
<FONT color="green">167</FONT>    <a name="line.167"></a>
<FONT color="green">168</FONT>        /** The tool tip generator for ALL series. */<a name="line.168"></a>
<FONT color="green">169</FONT>        private XYToolTipGenerator toolTipGenerator;<a name="line.169"></a>
<FONT color="green">170</FONT>    <a name="line.170"></a>
<FONT color="green">171</FONT>        /** A list of tool tip generators (one per series). */<a name="line.171"></a>
<FONT color="green">172</FONT>        private ObjectList toolTipGeneratorList;<a name="line.172"></a>
<FONT color="green">173</FONT>    <a name="line.173"></a>
<FONT color="green">174</FONT>        /** The base tool tip generator. */<a name="line.174"></a>
<FONT color="green">175</FONT>        private XYToolTipGenerator baseToolTipGenerator;<a name="line.175"></a>
<FONT color="green">176</FONT>    <a name="line.176"></a>
<FONT color="green">177</FONT>        /** The URL text generator. */<a name="line.177"></a>
<FONT color="green">178</FONT>        private XYURLGenerator urlGenerator;<a name="line.178"></a>
<FONT color="green">179</FONT>        <a name="line.179"></a>
<FONT color="green">180</FONT>        /** <a name="line.180"></a>
<FONT color="green">181</FONT>         * Annotations to be drawn in the background layer ('underneath' the data <a name="line.181"></a>
<FONT color="green">182</FONT>         * items). <a name="line.182"></a>
<FONT color="green">183</FONT>         */<a name="line.183"></a>
<FONT color="green">184</FONT>        private List backgroundAnnotations;<a name="line.184"></a>
<FONT color="green">185</FONT>        <a name="line.185"></a>
<FONT color="green">186</FONT>        /** <a name="line.186"></a>
<FONT color="green">187</FONT>         * Annotations to be drawn in the foreground layer ('on top' of the data <a name="line.187"></a>
<FONT color="green">188</FONT>         * items). <a name="line.188"></a>
<FONT color="green">189</FONT>         */<a name="line.189"></a>
<FONT color="green">190</FONT>        private List foregroundAnnotations;<a name="line.190"></a>
<FONT color="green">191</FONT>        <a name="line.191"></a>
<FONT color="green">192</FONT>        private int defaultEntityRadius;<a name="line.192"></a>
<FONT color="green">193</FONT>        <a name="line.193"></a>
<FONT color="green">194</FONT>        private XYSeriesLabelGenerator legendItemLabelGenerator;<a name="line.194"></a>
<FONT color="green">195</FONT>        <a name="line.195"></a>
<FONT color="green">196</FONT>        private XYSeriesLabelGenerator legendItemToolTipGenerator;<a name="line.196"></a>
<FONT color="green">197</FONT>        <a name="line.197"></a>
<FONT color="green">198</FONT>        private XYSeriesLabelGenerator legendItemURLGenerator;<a name="line.198"></a>
<FONT color="green">199</FONT>    <a name="line.199"></a>
<FONT color="green">200</FONT>        /**<a name="line.200"></a>
<FONT color="green">201</FONT>         * Creates a renderer where the tooltip generator and the URL generator are<a name="line.201"></a>
<FONT color="green">202</FONT>         * both &lt;code&gt;null&lt;/code&gt;.<a name="line.202"></a>
<FONT color="green">203</FONT>         */<a name="line.203"></a>
<FONT color="green">204</FONT>        protected AbstractXYItemRenderer() {<a name="line.204"></a>
<FONT color="green">205</FONT>            this.itemLabelGenerator = null;<a name="line.205"></a>
<FONT color="green">206</FONT>            this.itemLabelGeneratorList = new ObjectList();<a name="line.206"></a>
<FONT color="green">207</FONT>            this.toolTipGenerator = null;<a name="line.207"></a>
<FONT color="green">208</FONT>            this.toolTipGeneratorList = new ObjectList();<a name="line.208"></a>
<FONT color="green">209</FONT>            this.urlGenerator = null;<a name="line.209"></a>
<FONT color="green">210</FONT>            this.backgroundAnnotations = new java.util.ArrayList();<a name="line.210"></a>
<FONT color="green">211</FONT>            this.foregroundAnnotations = new java.util.ArrayList();<a name="line.211"></a>
<FONT color="green">212</FONT>            this.defaultEntityRadius = 3;<a name="line.212"></a>
<FONT color="green">213</FONT>            this.legendItemLabelGenerator <a name="line.213"></a>
<FONT color="green">214</FONT>                = new StandardXYSeriesLabelGenerator("{0}");<a name="line.214"></a>
<FONT color="green">215</FONT>        }<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>         * Returns the number of passes through the data that the renderer requires<a name="line.218"></a>
<FONT color="green">219</FONT>         * in order to draw the chart.  Most charts will require a single pass, but <a name="line.219"></a>
<FONT color="green">220</FONT>         * some require two passes.<a name="line.220"></a>
<FONT color="green">221</FONT>         *<a name="line.221"></a>
<FONT color="green">222</FONT>         * @return The pass count.<a name="line.222"></a>
<FONT color="green">223</FONT>         */<a name="line.223"></a>
<FONT color="green">224</FONT>        public int getPassCount() {<a name="line.224"></a>
<FONT color="green">225</FONT>            return 1;<a name="line.225"></a>
<FONT color="green">226</FONT>        }<a name="line.226"></a>
<FONT color="green">227</FONT>    <a name="line.227"></a>
<FONT color="green">228</FONT>        /**<a name="line.228"></a>
<FONT color="green">229</FONT>         * Returns the plot that the renderer is assigned to.<a name="line.229"></a>
<FONT color="green">230</FONT>         *<a name="line.230"></a>
<FONT color="green">231</FONT>         * @return The plot.<a name="line.231"></a>
<FONT color="green">232</FONT>         */<a name="line.232"></a>
<FONT color="green">233</FONT>        public XYPlot getPlot() {<a name="line.233"></a>
<FONT color="green">234</FONT>            return this.plot;<a name="line.234"></a>
<FONT color="green">235</FONT>        }<a name="line.235"></a>
<FONT color="green">236</FONT>    <a name="line.236"></a>
<FONT color="green">237</FONT>        /**<a name="line.237"></a>
<FONT color="green">238</FONT>         * Sets the plot that the renderer is assigned to.<a name="line.238"></a>
<FONT color="green">239</FONT>         *<a name="line.239"></a>
<FONT color="green">240</FONT>         * @param plot  the plot.<a name="line.240"></a>
<FONT color="green">241</FONT>         */<a name="line.241"></a>
<FONT color="green">242</FONT>        public void setPlot(XYPlot plot) {<a name="line.242"></a>
<FONT color="green">243</FONT>            this.plot = plot;<a name="line.243"></a>
<FONT color="green">244</FONT>        }<a name="line.244"></a>
<FONT color="green">245</FONT>    <a name="line.245"></a>
<FONT color="green">246</FONT>        /**<a name="line.246"></a>
<FONT color="green">247</FONT>         * Initialises the renderer and returns a state object that should be <a name="line.247"></a>
<FONT color="green">248</FONT>         * passed to all subsequent calls to the drawItem() method.<a name="line.248"></a>
<FONT color="green">249</FONT>         * &lt;P&gt;<a name="line.249"></a>
<FONT color="green">250</FONT>         * This method will be called before the first item is rendered, giving the<a name="line.250"></a>
<FONT color="green">251</FONT>         * renderer an opportunity to initialise any state information it wants to <a name="line.251"></a>
<FONT color="green">252</FONT>         * maintain.  The renderer can do nothing if it chooses.<a name="line.252"></a>
<FONT color="green">253</FONT>         *<a name="line.253"></a>
<FONT color="green">254</FONT>         * @param g2  the graphics device.<a name="line.254"></a>
<FONT color="green">255</FONT>         * @param dataArea  the area inside the axes.<a name="line.255"></a>
<FONT color="green">256</FONT>         * @param plot  the plot.<a name="line.256"></a>
<FONT color="green">257</FONT>         * @param data  the data.<a name="line.257"></a>
<FONT color="green">258</FONT>         * @param info  an optional info collection object to return data back to <a name="line.258"></a>
<FONT color="green">259</FONT>         *              the caller.<a name="line.259"></a>
<FONT color="green">260</FONT>         *<a name="line.260"></a>
<FONT color="green">261</FONT>         * @return The renderer state (never &lt;code&gt;null&lt;/code&gt;).<a name="line.261"></a>
<FONT color="green">262</FONT>         */<a name="line.262"></a>
<FONT color="green">263</FONT>        public XYItemRendererState initialise(Graphics2D g2,<a name="line.263"></a>
<FONT color="green">264</FONT>                                              Rectangle2D dataArea,<a name="line.264"></a>
<FONT color="green">265</FONT>                                              XYPlot plot,<a name="line.265"></a>
<FONT color="green">266</FONT>                                              XYDataset data,<a name="line.266"></a>
<FONT color="green">267</FONT>                                              PlotRenderingInfo info) {<a name="line.267"></a>
<FONT color="green">268</FONT>    <a name="line.268"></a>
<FONT color="green">269</FONT>            XYItemRendererState state = new XYItemRendererState(info);<a name="line.269"></a>
<FONT color="green">270</FONT>            return state;<a name="line.270"></a>
<FONT color="green">271</FONT>    <a name="line.271"></a>
<FONT color="green">272</FONT>        }<a name="line.272"></a>
<FONT color="green">273</FONT>    <a name="line.273"></a>
<FONT color="green">274</FONT>        // ITEM LABEL GENERATOR<a name="line.274"></a>
<FONT color="green">275</FONT>    <a name="line.275"></a>
<FONT color="green">276</FONT>        /**<a name="line.276"></a>
<FONT color="green">277</FONT>         * Returns the label generator for a data item.  This implementation simply <a name="line.277"></a>
<FONT color="green">278</FONT>         * passes control to the {@link #getSeriesItemLabelGenerator(int)} method.  <a name="line.278"></a>
<FONT color="green">279</FONT>         * If, for some reason, you want a different generator for individual <a name="line.279"></a>