combinedrangexyplot.html

jfreechart1。0。2的api。

<FONT color="green">177</FONT>         * Sets the amount of space between subplots.<a name="line.177"></a>
<FONT color="green">178</FONT>         *<a name="line.178"></a>
<FONT color="green">179</FONT>         * @param gap  the gap between subplots<a name="line.179"></a>
<FONT color="green">180</FONT>         */<a name="line.180"></a>
<FONT color="green">181</FONT>        public void setGap(double gap) {<a name="line.181"></a>
<FONT color="green">182</FONT>            this.gap = gap;<a name="line.182"></a>
<FONT color="green">183</FONT>        }<a name="line.183"></a>
<FONT color="green">184</FONT>    <a name="line.184"></a>
<FONT color="green">185</FONT>        /**<a name="line.185"></a>
<FONT color="green">186</FONT>         * Adds a subplot, with a default 'weight' of 1.<a name="line.186"></a>
<FONT color="green">187</FONT>         *<a name="line.187"></a>
<FONT color="green">188</FONT>         * @param subplot  the subplot.<a name="line.188"></a>
<FONT color="green">189</FONT>         */<a name="line.189"></a>
<FONT color="green">190</FONT>        public void add(XYPlot subplot) {<a name="line.190"></a>
<FONT color="green">191</FONT>            add(subplot, 1);<a name="line.191"></a>
<FONT color="green">192</FONT>        }<a name="line.192"></a>
<FONT color="green">193</FONT>    <a name="line.193"></a>
<FONT color="green">194</FONT>        /**<a name="line.194"></a>
<FONT color="green">195</FONT>         * Adds a subplot with a particular weight (greater than or equal to one).  <a name="line.195"></a>
<FONT color="green">196</FONT>         * The weight determines how much space is allocated to the subplot <a name="line.196"></a>
<FONT color="green">197</FONT>         * relative to all the other subplots.<a name="line.197"></a>
<FONT color="green">198</FONT>         *<a name="line.198"></a>
<FONT color="green">199</FONT>         * @param subplot  the subplot.<a name="line.199"></a>
<FONT color="green">200</FONT>         * @param weight  the weight (must be 1 or greater).<a name="line.200"></a>
<FONT color="green">201</FONT>         */<a name="line.201"></a>
<FONT color="green">202</FONT>        public void add(XYPlot subplot, int weight) {<a name="line.202"></a>
<FONT color="green">203</FONT>    <a name="line.203"></a>
<FONT color="green">204</FONT>            // verify valid weight<a name="line.204"></a>
<FONT color="green">205</FONT>            if (weight &lt;= 0) {<a name="line.205"></a>
<FONT color="green">206</FONT>                String msg = "The 'weight' must be positive.";<a name="line.206"></a>
<FONT color="green">207</FONT>                throw new IllegalArgumentException(msg);<a name="line.207"></a>
<FONT color="green">208</FONT>            }<a name="line.208"></a>
<FONT color="green">209</FONT>    <a name="line.209"></a>
<FONT color="green">210</FONT>            // store the plot and its weight<a name="line.210"></a>
<FONT color="green">211</FONT>            subplot.setParent(this);<a name="line.211"></a>
<FONT color="green">212</FONT>            subplot.setWeight(weight);<a name="line.212"></a>
<FONT color="green">213</FONT>            subplot.setInsets(new RectangleInsets(0.0, 0.0, 0.0, 0.0));<a name="line.213"></a>
<FONT color="green">214</FONT>            subplot.setRangeAxis(null);<a name="line.214"></a>
<FONT color="green">215</FONT>            subplot.addChangeListener(this);<a name="line.215"></a>
<FONT color="green">216</FONT>            this.subplots.add(subplot);<a name="line.216"></a>
<FONT color="green">217</FONT>    <a name="line.217"></a>
<FONT color="green">218</FONT>            // keep track of total weights<a name="line.218"></a>
<FONT color="green">219</FONT>            this.totalWeight += weight;<a name="line.219"></a>
<FONT color="green">220</FONT>            configureRangeAxes();<a name="line.220"></a>
<FONT color="green">221</FONT>            notifyListeners(new PlotChangeEvent(this));<a name="line.221"></a>
<FONT color="green">222</FONT>    <a name="line.222"></a>
<FONT color="green">223</FONT>        }<a name="line.223"></a>
<FONT color="green">224</FONT>    <a name="line.224"></a>
<FONT color="green">225</FONT>        /**<a name="line.225"></a>
<FONT color="green">226</FONT>         * Removes a subplot from the combined chart.<a name="line.226"></a>
<FONT color="green">227</FONT>         *<a name="line.227"></a>
<FONT color="green">228</FONT>         * @param subplot  the subplot (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.228"></a>
<FONT color="green">229</FONT>         */<a name="line.229"></a>
<FONT color="green">230</FONT>        public void remove(XYPlot subplot) {<a name="line.230"></a>
<FONT color="green">231</FONT>            if (subplot == null) {<a name="line.231"></a>
<FONT color="green">232</FONT>                throw new IllegalArgumentException(" Null 'subplot' argument.");   <a name="line.232"></a>
<FONT color="green">233</FONT>            }<a name="line.233"></a>
<FONT color="green">234</FONT>            int position = -1;<a name="line.234"></a>
<FONT color="green">235</FONT>            int size = this.subplots.size();<a name="line.235"></a>
<FONT color="green">236</FONT>            int i = 0;<a name="line.236"></a>
<FONT color="green">237</FONT>            while (position == -1 &amp;&amp; i &lt; size) {<a name="line.237"></a>
<FONT color="green">238</FONT>                if (this.subplots.get(i) == subplot) {<a name="line.238"></a>
<FONT color="green">239</FONT>                    position = i;<a name="line.239"></a>
<FONT color="green">240</FONT>                }<a name="line.240"></a>
<FONT color="green">241</FONT>                i++;<a name="line.241"></a>
<FONT color="green">242</FONT>            }<a name="line.242"></a>
<FONT color="green">243</FONT>            if (position != -1) {<a name="line.243"></a>
<FONT color="green">244</FONT>                subplot.setParent(null);<a name="line.244"></a>
<FONT color="green">245</FONT>                subplot.removeChangeListener(this);<a name="line.245"></a>
<FONT color="green">246</FONT>                this.totalWeight -= subplot.getWeight();<a name="line.246"></a>
<FONT color="green">247</FONT>                configureRangeAxes();<a name="line.247"></a>
<FONT color="green">248</FONT>                notifyListeners(new PlotChangeEvent(this));<a name="line.248"></a>
<FONT color="green">249</FONT>            }<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>         * Returns a list of the subplots.<a name="line.253"></a>
<FONT color="green">254</FONT>         *<a name="line.254"></a>
<FONT color="green">255</FONT>         * @return The list (unmodifiable).<a name="line.255"></a>
<FONT color="green">256</FONT>         */<a name="line.256"></a>
<FONT color="green">257</FONT>        public List getSubplots() {<a name="line.257"></a>
<FONT color="green">258</FONT>            return Collections.unmodifiableList(this.subplots);<a name="line.258"></a>
<FONT color="green">259</FONT>        }<a name="line.259"></a>
<FONT color="green">260</FONT>    <a name="line.260"></a>
<FONT color="green">261</FONT>        /**<a name="line.261"></a>
<FONT color="green">262</FONT>         * Calculates the space required for the axes.<a name="line.262"></a>
<FONT color="green">263</FONT>         * <a name="line.263"></a>
<FONT color="green">264</FONT>         * @param g2  the graphics device.<a name="line.264"></a>
<FONT color="green">265</FONT>         * @param plotArea  the plot area.<a name="line.265"></a>
<FONT color="green">266</FONT>         * <a name="line.266"></a>
<FONT color="green">267</FONT>         * @return The space required for the axes.<a name="line.267"></a>
<FONT color="green">268</FONT>         */<a name="line.268"></a>
<FONT color="green">269</FONT>        protected AxisSpace calculateAxisSpace(Graphics2D g2, <a name="line.269"></a>
<FONT color="green">270</FONT>                                               Rectangle2D plotArea) {<a name="line.270"></a>
<FONT color="green">271</FONT>            <a name="line.271"></a>
<FONT color="green">272</FONT>            AxisSpace space = new AxisSpace();<a name="line.272"></a>
<FONT color="green">273</FONT>            PlotOrientation orientation = getOrientation();<a name="line.273"></a>
<FONT color="green">274</FONT>            <a name="line.274"></a>
<FONT color="green">275</FONT>            // work out the space required by the domain axis...<a name="line.275"></a>
<FONT color="green">276</FONT>            AxisSpace fixed = getFixedRangeAxisSpace();<a name="line.276"></a>
<FONT color="green">277</FONT>            if (fixed != null) {<a name="line.277"></a>
<FONT color="green">278</FONT>                if (orientation == PlotOrientation.VERTICAL) {<a name="line.278"></a>
<FONT color="green">279</FONT>                    space.setLeft(fixed.getLeft());<a name="line.279"></a>
<FONT color="green">280</FONT>                    space.setRight(fixed.getRight());<a name="line.280"></a>
<FONT color="green">281</FONT>                }<a name="line.281"></a>
<FONT color="green">282</FONT>                else if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.282"></a>
<FONT color="green">283</FONT>                    space.setTop(fixed.getTop());<a name="line.283"></a>
<FONT color="green">284</FONT>                    space.setBottom(fixed.getBottom());                <a name="line.284"></a>
<FONT color="green">285</FONT>                }<a name="line.285"></a>
<FONT color="green">286</FONT>            }<a name="line.286"></a>
<FONT color="green">287</FONT>            else {<a name="line.287"></a>
<FONT color="green">288</FONT>                ValueAxis valueAxis = getRangeAxis();<a name="line.288"></a>
<FONT color="green">289</FONT>                RectangleEdge valueEdge = Plot.resolveRangeAxisLocation(<a name="line.289"></a>
<FONT color="green">290</FONT>                    getRangeAxisLocation(), orientation<a name="line.290"></a>
<FONT color="green">291</FONT>                );<a name="line.291"></a>
<FONT color="green">292</FONT>                if (valueAxis != null) {<a name="line.292"></a>
<FONT color="green">293</FONT>                    space = valueAxis.reserveSpace(<a name="line.293"></a>
<FONT color="green">294</FONT>                        g2, this, plotArea, valueEdge, space<a name="line.294"></a>
<FONT color="green">295</FONT>                    );<a name="line.295"></a>
<FONT color="green">296</FONT>                }<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>            Rectangle2D adjustedPlotArea = space.shrink(plotArea, null);<a name="line.299"></a>
<FONT color="green">300</FONT>            // work out the maximum height or width of the non-shared axes...<a name="line.300"></a>
<FONT color="green">301</FONT>            int n = this.subplots.size();<a name="line.301"></a>
<FONT color="green">302</FONT>    <a name="line.302"></a>
<FONT color="green">303</FONT>            // calculate plotAreas of all sub-plots, maximum vertical/horizontal <a name="line.303"></a>
<FONT color="green">304</FONT>            // axis width/height<a name="line.304"></a>
<FONT color="green">305</FONT>            this.subplotAreas = new Rectangle2D[n];<a name="line.305"></a>
<FONT color="green">306</FONT>            double x = adjustedPlotArea.getX();<a name="line.306"></a>
<FONT color="green">307</FONT>            double y = adjustedPlotArea.getY();<a name="line.307"></a>
<FONT color="green">308</FONT>            double usableSize = 0.0;<a name="line.308"></a>
<FONT color="green">309</FONT>            if (orientation == PlotOrientation.VERTICAL) {<a name="line.309"></a>
<FONT color="green">310</FONT>                usableSize = adjustedPlotArea.getWidth() - this.gap * (n - 1);<a name="line.310"></a>
<FONT color="green">311</FONT>            }<a name="line.311"></a>
<FONT color="green">312</FONT>            else if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.312"></a>
<FONT color="green">313</FONT>                usableSize = adjustedPlotArea.getHeight() - this.gap * (n - 1);<a name="line.313"></a>
<FONT color="green">314</FONT>            }<a name="line.314"></a>
<FONT color="green">315</FONT>    <a name="line.315"></a>
<FONT color="green">316</FONT>            for (int i = 0; i &lt; n; i++) {<a name="line.316"></a>
<FONT color="green">317</FONT>                XYPlot plot = (XYPlot) this.subplots.get(i);<a name="line.317"></a>
<FONT color="green">318</FONT>    <a name="line.318"></a>
<FONT color="green">319</FONT>                // calculate sub-plot area<a name="line.319"></a>
<FONT color="green">320</FONT>                if (orientation == PlotOrientation.VERTICAL) {<a name="line.320"></a>
<FONT color="green">321</FONT>                    double w = usableSize * plot.getWeight() / this.totalWeight;<a name="line.321"></a>
<FONT color="green">322</FONT>                    this.subplotAreas[i] = new Rectangle2D.Double(<a name="line.322"></a>
<FONT color="green">323</FONT>                        x, y, w, adjustedPlotArea.getHeight()<a name="line.323"></a>
<FONT color="green">324</FONT>                    );<a name="line.324"></a>
<FONT color="green">325</FONT>                    x = x + w + this.gap;<a name="line.325"></a>
<FONT color="green">326</FONT>                }<a name="line.326"></a>
<FONT color="green">327</FONT>                else if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.327"></a>
<FONT color="green">328</FONT>                    double h = usableSize * plot.getWeight() / this.totalWeight;<a name="line.328"></a>
<FONT color="green">329</FONT>                    this.subplotAreas[i] = new Rectangle2D.Double(<a name="line.329"></a>
<FONT color="green">330</FONT>                        x, y, adjustedPlotArea.getWidth(), h<a name="line.330"></a>
<FONT color="green">331</FONT>                    );<a name="line.331"></a>
<FONT color="green">332</FONT>                    y = y + h + this.gap;<a name="line.332"></a>
<FONT color="green">333</FONT>                }<a name="line.333"></a>
<FONT color="green">334</FONT>    <a name="line.334"></a>
<FONT color="green">335</FONT>                AxisSpace subSpace = plot.calculateDomainAxisSpace(<a name="line.335"></a>
<FONT color="green">336</FONT>                    g2, this.subplotAreas[i], null<a name="line.336"></a>
<FONT color="green">337</FONT>                );<a name="line.337"></a>
<FONT color="green">338</FONT>                space.ensureAtLeast(subSpace);<a name="line.338"></a>
<FONT color="green">339</FONT>    <a name="line.339"></a>
<FONT color="green">340</FONT>            }<a name="line.340"></a>
<FONT color="green">341</FONT>    <a name="line.341"></a>
<FONT color="green">342</FONT>            return space;<a name="line.342"></a>
<FONT color="green">343</FONT>        }<a name="line.343"></a>
<FONT color="green">344</FONT>        <a name="line.344"></a>
<FONT color="green">345</FONT>        /**<a name="line.345"></a>
<FONT color="green">346</FONT>         * Draws the plot within the specified area on a graphics device.<a name="line.346"></a>
<FONT color="green">347</FONT>         * <a name="line.347"></a>
<FONT color="green">348</FONT>         * @param g2  the graphics device.<a name="line.348"></a>
<FONT color="green">349</FONT>         * @param area  the plot area (in Java2D space).<a name="line.349"></a>
<FONT color="green">350</FONT>         * @param anchor  an anchor point in Java2D space (&lt;code&gt;null&lt;/code&gt; <a name="line.350"></a>
<FONT color="green">351</FONT>         *                permitted).<a name="line.351"></a>
<FONT color="green">352</FONT>         * @param parentState  the state from the parent plot, if there is one <a name="line.352"></a>
<FONT color="green">353</FONT>         *                     (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.353"></a>
<FONT color="green">354</FONT>         * @param info  collects chart drawing information (&lt;code&gt;null&lt;/code&gt; <a name="line.354"></a>
<FONT color="green">355</FONT>         *              permitted).<a name="line.355"></a>