xyarearenderer.html

jfreechart1。0。2的api。

<FONT color="green">173</FONT>        private boolean showOutline;<a name="line.173"></a>
<FONT color="green">174</FONT>    <a name="line.174"></a>
<FONT color="green">175</FONT>        /** <a name="line.175"></a>
<FONT color="green">176</FONT>         * The shape used to represent an area in each legend item (this should <a name="line.176"></a>
<FONT color="green">177</FONT>         * never be &lt;code&gt;null&lt;/code&gt;). <a name="line.177"></a>
<FONT color="green">178</FONT>         */<a name="line.178"></a>
<FONT color="green">179</FONT>        private transient Shape legendArea;<a name="line.179"></a>
<FONT color="green">180</FONT>    <a name="line.180"></a>
<FONT color="green">181</FONT>        /**<a name="line.181"></a>
<FONT color="green">182</FONT>         * Constructs a new renderer.<a name="line.182"></a>
<FONT color="green">183</FONT>         */<a name="line.183"></a>
<FONT color="green">184</FONT>        public XYAreaRenderer() {<a name="line.184"></a>
<FONT color="green">185</FONT>            this(AREA);<a name="line.185"></a>
<FONT color="green">186</FONT>        }<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>         * Constructs a new renderer.<a name="line.189"></a>
<FONT color="green">190</FONT>         *<a name="line.190"></a>
<FONT color="green">191</FONT>         * @param type  the type of the renderer.<a name="line.191"></a>
<FONT color="green">192</FONT>         */<a name="line.192"></a>
<FONT color="green">193</FONT>        public XYAreaRenderer(int type) {<a name="line.193"></a>
<FONT color="green">194</FONT>            this(type, null, null);<a name="line.194"></a>
<FONT color="green">195</FONT>        }<a name="line.195"></a>
<FONT color="green">196</FONT>    <a name="line.196"></a>
<FONT color="green">197</FONT>        /**<a name="line.197"></a>
<FONT color="green">198</FONT>         * Constructs a new renderer.<a name="line.198"></a>
<FONT color="green">199</FONT>         * &lt;p&gt;<a name="line.199"></a>
<FONT color="green">200</FONT>         * To specify the type of renderer, use one of the constants: SHAPES, LINES,<a name="line.200"></a>
<FONT color="green">201</FONT>         * SHAPES_AND_LINES, AREA or AREA_AND_SHAPES.<a name="line.201"></a>
<FONT color="green">202</FONT>         *<a name="line.202"></a>
<FONT color="green">203</FONT>         * @param type  the type of renderer.<a name="line.203"></a>
<FONT color="green">204</FONT>         * @param toolTipGenerator  the tool tip generator to use <a name="line.204"></a>
<FONT color="green">205</FONT>         *                          (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.205"></a>
<FONT color="green">206</FONT>         * @param urlGenerator  the URL generator (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.206"></a>
<FONT color="green">207</FONT>         */<a name="line.207"></a>
<FONT color="green">208</FONT>        public XYAreaRenderer(int type, XYToolTipGenerator toolTipGenerator, <a name="line.208"></a>
<FONT color="green">209</FONT>                              XYURLGenerator urlGenerator) {<a name="line.209"></a>
<FONT color="green">210</FONT>    <a name="line.210"></a>
<FONT color="green">211</FONT>            super();<a name="line.211"></a>
<FONT color="green">212</FONT>            setBaseToolTipGenerator(toolTipGenerator);<a name="line.212"></a>
<FONT color="green">213</FONT>            setURLGenerator(urlGenerator);<a name="line.213"></a>
<FONT color="green">214</FONT>    <a name="line.214"></a>
<FONT color="green">215</FONT>            if (type == SHAPES) {<a name="line.215"></a>
<FONT color="green">216</FONT>                this.plotShapes = true;<a name="line.216"></a>
<FONT color="green">217</FONT>            }<a name="line.217"></a>
<FONT color="green">218</FONT>            if (type == LINES) {<a name="line.218"></a>
<FONT color="green">219</FONT>                this.plotLines = true;<a name="line.219"></a>
<FONT color="green">220</FONT>            }<a name="line.220"></a>
<FONT color="green">221</FONT>            if (type == SHAPES_AND_LINES) {<a name="line.221"></a>
<FONT color="green">222</FONT>                this.plotShapes = true;<a name="line.222"></a>
<FONT color="green">223</FONT>                this.plotLines = true;<a name="line.223"></a>
<FONT color="green">224</FONT>            }<a name="line.224"></a>
<FONT color="green">225</FONT>            if (type == AREA) {<a name="line.225"></a>
<FONT color="green">226</FONT>                this.plotArea = true;<a name="line.226"></a>
<FONT color="green">227</FONT>            }<a name="line.227"></a>
<FONT color="green">228</FONT>            if (type == AREA_AND_SHAPES) {<a name="line.228"></a>
<FONT color="green">229</FONT>                this.plotArea = true;<a name="line.229"></a>
<FONT color="green">230</FONT>                this.plotShapes = true;<a name="line.230"></a>
<FONT color="green">231</FONT>            }<a name="line.231"></a>
<FONT color="green">232</FONT>            this.showOutline = false;<a name="line.232"></a>
<FONT color="green">233</FONT>            GeneralPath area = new GeneralPath();<a name="line.233"></a>
<FONT color="green">234</FONT>            area.moveTo(0.0f, -4.0f);<a name="line.234"></a>
<FONT color="green">235</FONT>            area.lineTo(3.0f, -2.0f);<a name="line.235"></a>
<FONT color="green">236</FONT>            area.lineTo(4.0f, 4.0f);<a name="line.236"></a>
<FONT color="green">237</FONT>            area.lineTo(-4.0f, 4.0f);<a name="line.237"></a>
<FONT color="green">238</FONT>            area.lineTo(-3.0f, -2.0f);<a name="line.238"></a>
<FONT color="green">239</FONT>            area.closePath();<a name="line.239"></a>
<FONT color="green">240</FONT>            this.legendArea = area;<a name="line.240"></a>
<FONT color="green">241</FONT>    <a name="line.241"></a>
<FONT color="green">242</FONT>        }<a name="line.242"></a>
<FONT color="green">243</FONT>    <a name="line.243"></a>
<FONT color="green">244</FONT>        /**<a name="line.244"></a>
<FONT color="green">245</FONT>         * Returns a flag that controls whether or not outlines of the areas are <a name="line.245"></a>
<FONT color="green">246</FONT>         * drawn.<a name="line.246"></a>
<FONT color="green">247</FONT>         *<a name="line.247"></a>
<FONT color="green">248</FONT>         * @return The flag.<a name="line.248"></a>
<FONT color="green">249</FONT>         */<a name="line.249"></a>
<FONT color="green">250</FONT>        public boolean isOutline() {<a name="line.250"></a>
<FONT color="green">251</FONT>            return this.showOutline;<a name="line.251"></a>
<FONT color="green">252</FONT>        }<a name="line.252"></a>
<FONT color="green">253</FONT>    <a name="line.253"></a>
<FONT color="green">254</FONT>        /**<a name="line.254"></a>
<FONT color="green">255</FONT>         * Sets a flag that controls whether or not outlines of the areas are drawn.<a name="line.255"></a>
<FONT color="green">256</FONT>         *<a name="line.256"></a>
<FONT color="green">257</FONT>         * @param show  the flag.<a name="line.257"></a>
<FONT color="green">258</FONT>         */<a name="line.258"></a>
<FONT color="green">259</FONT>        public void setOutline(boolean show) {<a name="line.259"></a>
<FONT color="green">260</FONT>            this.showOutline = show;<a name="line.260"></a>
<FONT color="green">261</FONT>        }<a name="line.261"></a>
<FONT color="green">262</FONT>    <a name="line.262"></a>
<FONT color="green">263</FONT>        /**<a name="line.263"></a>
<FONT color="green">264</FONT>         * Returns true if shapes are being plotted by the renderer.<a name="line.264"></a>
<FONT color="green">265</FONT>         *<a name="line.265"></a>
<FONT color="green">266</FONT>         * @return &lt;code&gt;true&lt;/code&gt; if shapes are being plotted by the renderer.<a name="line.266"></a>
<FONT color="green">267</FONT>         */<a name="line.267"></a>
<FONT color="green">268</FONT>        public boolean getPlotShapes() {<a name="line.268"></a>
<FONT color="green">269</FONT>            return this.plotShapes;<a name="line.269"></a>
<FONT color="green">270</FONT>        }<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>         * Returns true if lines are being plotted by the renderer.<a name="line.273"></a>
<FONT color="green">274</FONT>         *<a name="line.274"></a>
<FONT color="green">275</FONT>         * @return &lt;code&gt;true&lt;/code&gt; if lines are being plotted by the renderer.<a name="line.275"></a>
<FONT color="green">276</FONT>         */<a name="line.276"></a>
<FONT color="green">277</FONT>        public boolean getPlotLines() {<a name="line.277"></a>
<FONT color="green">278</FONT>            return this.plotLines;<a name="line.278"></a>
<FONT color="green">279</FONT>        }<a name="line.279"></a>
<FONT color="green">280</FONT>    <a name="line.280"></a>
<FONT color="green">281</FONT>        /**<a name="line.281"></a>
<FONT color="green">282</FONT>         * Returns true if Area is being plotted by the renderer.<a name="line.282"></a>
<FONT color="green">283</FONT>         *<a name="line.283"></a>
<FONT color="green">284</FONT>         * @return &lt;code&gt;true&lt;/code&gt; if Area is being plotted by the renderer.<a name="line.284"></a>
<FONT color="green">285</FONT>         */<a name="line.285"></a>
<FONT color="green">286</FONT>        public boolean getPlotArea() {<a name="line.286"></a>
<FONT color="green">287</FONT>            return this.plotArea;<a name="line.287"></a>
<FONT color="green">288</FONT>        }<a name="line.288"></a>
<FONT color="green">289</FONT>    <a name="line.289"></a>
<FONT color="green">290</FONT>        /**<a name="line.290"></a>
<FONT color="green">291</FONT>         * Returns the shape used to represent an area in the legend.<a name="line.291"></a>
<FONT color="green">292</FONT>         * <a name="line.292"></a>
<FONT color="green">293</FONT>         * @return The legend area (never &lt;code&gt;null&lt;/code&gt;).<a name="line.293"></a>
<FONT color="green">294</FONT>         */<a name="line.294"></a>
<FONT color="green">295</FONT>        public Shape getLegendArea() {<a name="line.295"></a>
<FONT color="green">296</FONT>            return this.legendArea;   <a name="line.296"></a>
<FONT color="green">297</FONT>        }<a name="line.297"></a>
<FONT color="green">298</FONT>        <a name="line.298"></a>
<FONT color="green">299</FONT>        /**<a name="line.299"></a>
<FONT color="green">300</FONT>         * Sets the shape used as an area in each legend item and sends a <a name="line.300"></a>
<FONT color="green">301</FONT>         * {@link RendererChangeEvent} to all registered listeners.<a name="line.301"></a>
<FONT color="green">302</FONT>         * <a name="line.302"></a>
<FONT color="green">303</FONT>         * @param area  the area (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.303"></a>
<FONT color="green">304</FONT>         */<a name="line.304"></a>
<FONT color="green">305</FONT>        public void setLegendArea(Shape area) {<a name="line.305"></a>
<FONT color="green">306</FONT>            if (area == null) {<a name="line.306"></a>
<FONT color="green">307</FONT>                throw new IllegalArgumentException("Null 'area' argument.");   <a name="line.307"></a>
<FONT color="green">308</FONT>            }<a name="line.308"></a>
<FONT color="green">309</FONT>            this.legendArea = area;<a name="line.309"></a>
<FONT color="green">310</FONT>            notifyListeners(new RendererChangeEvent(this));<a name="line.310"></a>
<FONT color="green">311</FONT>        }<a name="line.311"></a>
<FONT color="green">312</FONT>    <a name="line.312"></a>
<FONT color="green">313</FONT>        /**<a name="line.313"></a>
<FONT color="green">314</FONT>         * Initialises the renderer and returns a state object that should be <a name="line.314"></a>
<FONT color="green">315</FONT>         * passed to all subsequent calls to the drawItem() method.<a name="line.315"></a>
<FONT color="green">316</FONT>         *<a name="line.316"></a>
<FONT color="green">317</FONT>         * @param g2  the graphics device.<a name="line.317"></a>
<FONT color="green">318</FONT>         * @param dataArea  the area inside the axes.<a name="line.318"></a>
<FONT color="green">319</FONT>         * @param plot  the plot.<a name="line.319"></a>
<FONT color="green">320</FONT>         * @param data  the data.<a name="line.320"></a>
<FONT color="green">321</FONT>         * @param info  an optional info collection object to return data back to <a name="line.321"></a>
<FONT color="green">322</FONT>         *              the caller.<a name="line.322"></a>
<FONT color="green">323</FONT>         *<a name="line.323"></a>
<FONT color="green">324</FONT>         * @return A state object for use by the renderer.<a name="line.324"></a>
<FONT color="green">325</FONT>         */<a name="line.325"></a>
<FONT color="green">326</FONT>        public XYItemRendererState initialise(Graphics2D g2, Rectangle2D dataArea,<a name="line.326"></a>
<FONT color="green">327</FONT>                XYPlot plot, XYDataset data, PlotRenderingInfo info) {<a name="line.327"></a>
<FONT color="green">328</FONT>            XYAreaRendererState state = new XYAreaRendererState(info);<a name="line.328"></a>
<FONT color="green">329</FONT>            return state;<a name="line.329"></a>
<FONT color="green">330</FONT>        }<a name="line.330"></a>
<FONT color="green">331</FONT>    <a name="line.331"></a>
<FONT color="green">332</FONT>        /**<a name="line.332"></a>
<FONT color="green">333</FONT>         * Returns a default legend item for the specified series.  Subclasses <a name="line.333"></a>
<FONT color="green">334</FONT>         * should override this method to generate customised items.<a name="line.334"></a>
<FONT color="green">335</FONT>         *<a name="line.335"></a>
<FONT color="green">336</FONT>         * @param datasetIndex  the dataset index (zero-based).<a name="line.336"></a>
<FONT color="green">337</FONT>         * @param series  the series index (zero-based).<a name="line.337"></a>
<FONT color="green">338</FONT>         *<a name="line.338"></a>
<FONT color="green">339</FONT>         * @return A legend item for the series.<a name="line.339"></a>
<FONT color="green">340</FONT>         */<a name="line.340"></a>
<FONT color="green">341</FONT>        public LegendItem getLegendItem(int datasetIndex, int series) {<a name="line.341"></a>
<FONT color="green">342</FONT>            LegendItem result = null;<a name="line.342"></a>
<FONT color="green">343</FONT>            XYPlot xyplot = getPlot();<a name="line.343"></a>
<FONT color="green">344</FONT>            if (xyplot != null) {<a name="line.344"></a>
<FONT color="green">345</FONT>                XYDataset dataset = xyplot.getDataset(datasetIndex);<a name="line.345"></a>
<FONT color="green">346</FONT>                if (dataset != null) {<a name="line.346"></a>
<FONT color="green">347</FONT>                    XYSeriesLabelGenerator lg = getLegendItemLabelGenerator();<a name="line.347"></a>