chartfactory.html

jfreechart最新源代码

<FONT color="green">256</FONT>         * For instance if &lt;code&gt;percentDiffForMaxScale&lt;/code&gt; is 10 (10%), a <a name="line.256"></a>
<FONT color="green">257</FONT>         * difference of 5% will have a half shade of red/green, a difference of <a name="line.257"></a>
<FONT color="green">258</FONT>         * 10% or more will have a maximum shade/brightness of red/green.<a name="line.258"></a>
<FONT color="green">259</FONT>         * &lt;P&gt;<a name="line.259"></a>
<FONT color="green">260</FONT>         * The chart object returned by this method uses a {@link PiePlot} instance<a name="line.260"></a>
<FONT color="green">261</FONT>         * as the plot.<a name="line.261"></a>
<FONT color="green">262</FONT>         * &lt;p&gt;<a name="line.262"></a>
<FONT color="green">263</FONT>         * Written by &lt;a href="mailto:[e-mail]"&gt;Benoit <a name="line.263"></a>
<FONT color="green">264</FONT>         * Xhenseval&lt;/a&gt;.<a name="line.264"></a>
<FONT color="green">265</FONT>         *<a name="line.265"></a>
<FONT color="green">266</FONT>         * @param title  the chart title (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.266"></a>
<FONT color="green">267</FONT>         * @param dataset  the dataset for the chart (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.267"></a>
<FONT color="green">268</FONT>         * @param previousDataset  the dataset for the last run, this will be used <a name="line.268"></a>
<FONT color="green">269</FONT>         *                         to compare each key in the dataset<a name="line.269"></a>
<FONT color="green">270</FONT>         * @param percentDiffForMaxScale scale goes from bright red/green to black,<a name="line.270"></a>
<FONT color="green">271</FONT>         *                               percentDiffForMaxScale indicate the change <a name="line.271"></a>
<FONT color="green">272</FONT>         *                               required to reach top scale.<a name="line.272"></a>
<FONT color="green">273</FONT>         * @param greenForIncrease  an increase since previousDataset will be <a name="line.273"></a>
<FONT color="green">274</FONT>         *                          displayed in green (decrease red) if true.<a name="line.274"></a>
<FONT color="green">275</FONT>         * @param legend  a flag specifying whether or not a legend is required.<a name="line.275"></a>
<FONT color="green">276</FONT>         * @param tooltips  configure chart to generate tool tips?<a name="line.276"></a>
<FONT color="green">277</FONT>         * @param urls  configure chart to generate URLs?<a name="line.277"></a>
<FONT color="green">278</FONT>         * @param subTitle displays a subtitle with colour scheme if true<a name="line.278"></a>
<FONT color="green">279</FONT>         * @param showDifference  create a new dataset that will show the % <a name="line.279"></a>
<FONT color="green">280</FONT>         *                        difference between the two datasets. <a name="line.280"></a>
<FONT color="green">281</FONT>         *<a name="line.281"></a>
<FONT color="green">282</FONT>         * @return A pie chart.<a name="line.282"></a>
<FONT color="green">283</FONT>         */<a name="line.283"></a>
<FONT color="green">284</FONT>        public static JFreeChart createPieChart(String title,<a name="line.284"></a>
<FONT color="green">285</FONT>                                                PieDataset dataset,<a name="line.285"></a>
<FONT color="green">286</FONT>                                                PieDataset previousDataset,<a name="line.286"></a>
<FONT color="green">287</FONT>                                                int percentDiffForMaxScale,<a name="line.287"></a>
<FONT color="green">288</FONT>                                                boolean greenForIncrease,<a name="line.288"></a>
<FONT color="green">289</FONT>                                                boolean legend,<a name="line.289"></a>
<FONT color="green">290</FONT>                                                boolean tooltips,<a name="line.290"></a>
<FONT color="green">291</FONT>                                                boolean urls,<a name="line.291"></a>
<FONT color="green">292</FONT>                                                boolean subTitle,<a name="line.292"></a>
<FONT color="green">293</FONT>                                                boolean showDifference) {<a name="line.293"></a>
<FONT color="green">294</FONT>    <a name="line.294"></a>
<FONT color="green">295</FONT>            PiePlot plot = new PiePlot(dataset);<a name="line.295"></a>
<FONT color="green">296</FONT>            plot.setLabelGenerator(new StandardPieSectionLabelGenerator());<a name="line.296"></a>
<FONT color="green">297</FONT>            plot.setInsets(new RectangleInsets(0.0, 5.0, 5.0, 5.0));<a name="line.297"></a>
<FONT color="green">298</FONT>    <a name="line.298"></a>
<FONT color="green">299</FONT>            if (tooltips) {<a name="line.299"></a>
<FONT color="green">300</FONT>                plot.setToolTipGenerator(new StandardPieToolTipGenerator(<a name="line.300"></a>
<FONT color="green">301</FONT>                        StandardPieToolTipGenerator.DEFAULT_SECTION_LABEL_FORMAT));<a name="line.301"></a>
<FONT color="green">302</FONT>            }<a name="line.302"></a>
<FONT color="green">303</FONT>            if (urls) {<a name="line.303"></a>
<FONT color="green">304</FONT>                plot.setURLGenerator(new StandardPieURLGenerator());<a name="line.304"></a>
<FONT color="green">305</FONT>            }<a name="line.305"></a>
<FONT color="green">306</FONT>    <a name="line.306"></a>
<FONT color="green">307</FONT>            List keys = dataset.getKeys();<a name="line.307"></a>
<FONT color="green">308</FONT>            DefaultPieDataset series = null;<a name="line.308"></a>
<FONT color="green">309</FONT>            if (showDifference) {<a name="line.309"></a>
<FONT color="green">310</FONT>                series = new DefaultPieDataset();<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>            double colorPerPercent = 255.0 / percentDiffForMaxScale;<a name="line.313"></a>
<FONT color="green">314</FONT>            for (Iterator it = keys.iterator(); it.hasNext();) {<a name="line.314"></a>
<FONT color="green">315</FONT>                Comparable key = (Comparable) it.next();<a name="line.315"></a>
<FONT color="green">316</FONT>                Number newValue = dataset.getValue(key);<a name="line.316"></a>
<FONT color="green">317</FONT>                Number oldValue = previousDataset.getValue(key);<a name="line.317"></a>
<FONT color="green">318</FONT>                int section = dataset.getIndex(key);<a name="line.318"></a>
<FONT color="green">319</FONT>    <a name="line.319"></a>
<FONT color="green">320</FONT>                if (oldValue == null) {<a name="line.320"></a>
<FONT color="green">321</FONT>                    if (greenForIncrease) {<a name="line.321"></a>
<FONT color="green">322</FONT>                        plot.setSectionPaint(section, Color.green);<a name="line.322"></a>
<FONT color="green">323</FONT>                    } <a name="line.323"></a>
<FONT color="green">324</FONT>                    else {<a name="line.324"></a>
<FONT color="green">325</FONT>                        plot.setSectionPaint(section, Color.red);<a name="line.325"></a>
<FONT color="green">326</FONT>                    }<a name="line.326"></a>
<FONT color="green">327</FONT>                    if (showDifference) {<a name="line.327"></a>
<FONT color="green">328</FONT>                        series.setValue(key + " (+100%)", newValue);<a name="line.328"></a>
<FONT color="green">329</FONT>                    }<a name="line.329"></a>
<FONT color="green">330</FONT>                }<a name="line.330"></a>
<FONT color="green">331</FONT>                else {<a name="line.331"></a>
<FONT color="green">332</FONT>                    double percentChange = (newValue.doubleValue() <a name="line.332"></a>
<FONT color="green">333</FONT>                            / oldValue.doubleValue() - 1.0) * 100.0;<a name="line.333"></a>
<FONT color="green">334</FONT>                    double shade<a name="line.334"></a>
<FONT color="green">335</FONT>                        = (Math.abs(percentChange) &gt;= percentDiffForMaxScale ? 255<a name="line.335"></a>
<FONT color="green">336</FONT>                        : Math.abs(percentChange) * colorPerPercent);<a name="line.336"></a>
<FONT color="green">337</FONT>                    if (greenForIncrease <a name="line.337"></a>
<FONT color="green">338</FONT>                            &amp;&amp; newValue.doubleValue() &gt; oldValue.doubleValue()<a name="line.338"></a>
<FONT color="green">339</FONT>                            || !greenForIncrease &amp;&amp; newValue.doubleValue() <a name="line.339"></a>
<FONT color="green">340</FONT>                            &lt; oldValue.doubleValue()) {<a name="line.340"></a>
<FONT color="green">341</FONT>                        plot.setSectionPaint(section, new Color(0, (int) shade, 0));<a name="line.341"></a>
<FONT color="green">342</FONT>                    }<a name="line.342"></a>
<FONT color="green">343</FONT>                    else {<a name="line.343"></a>
<FONT color="green">344</FONT>                        plot.setSectionPaint(section, new Color((int) shade, 0, 0));<a name="line.344"></a>
<FONT color="green">345</FONT>                    }<a name="line.345"></a>
<FONT color="green">346</FONT>                    if (showDifference) {<a name="line.346"></a>
<FONT color="green">347</FONT>                        series.setValue(key + " (" + (percentChange &gt;= 0 ? "+" : "") <a name="line.347"></a>
<FONT color="green">348</FONT>                                + NumberFormat.getPercentInstance().format(<a name="line.348"></a>
<FONT color="green">349</FONT>                                percentChange / 100.0) + ")", newValue);<a name="line.349"></a>
<FONT color="green">350</FONT>                    }<a name="line.350"></a>
<FONT color="green">351</FONT>                }<a name="line.351"></a>
<FONT color="green">352</FONT>            }<a name="line.352"></a>
<FONT color="green">353</FONT>    <a name="line.353"></a>
<FONT color="green">354</FONT>            if (showDifference) {<a name="line.354"></a>
<FONT color="green">355</FONT>                plot.setDataset(series);<a name="line.355"></a>
<FONT color="green">356</FONT>            }<a name="line.356"></a>
<FONT color="green">357</FONT>    <a name="line.357"></a>
<FONT color="green">358</FONT>            JFreeChart chart =  new JFreeChart(<a name="line.358"></a>
<FONT color="green">359</FONT>                title, JFreeChart.DEFAULT_TITLE_FONT, plot, legend<a name="line.359"></a>
<FONT color="green">360</FONT>            );<a name="line.360"></a>
<FONT color="green">361</FONT>    <a name="line.361"></a>
<FONT color="green">362</FONT>            if (subTitle) {<a name="line.362"></a>
<FONT color="green">363</FONT>                TextTitle subtitle = null;<a name="line.363"></a>
<FONT color="green">364</FONT>                subtitle = new TextTitle("Bright " + (greenForIncrease ? "red" <a name="line.364"></a>
<FONT color="green">365</FONT>                        : "green") + "=change &gt;=-" + percentDiffForMaxScale <a name="line.365"></a>
<FONT color="green">366</FONT>                        + "%, Bright " + (!greenForIncrease ? "red" : "green") <a name="line.366"></a>
<FONT color="green">367</FONT>                        + "=change &gt;=+" + percentDiffForMaxScale + "%", <a name="line.367"></a>
<FONT color="green">368</FONT>                        new Font("SansSerif", Font.PLAIN, 10));<a name="line.368"></a>
<FONT color="green">369</FONT>                chart.addSubtitle(subtitle);<a name="line.369"></a>
<FONT color="green">370</FONT>            }<a name="line.370"></a>
<FONT color="green">371</FONT>    <a name="line.371"></a>
<FONT color="green">372</FONT>            return chart;<a name="line.372"></a>
<FONT color="green">373</FONT>        }<a name="line.373"></a>
<FONT color="green">374</FONT>    <a name="line.374"></a>
<FONT color="green">375</FONT>        /**<a name="line.375"></a>
<FONT color="green">376</FONT>         * Creates a ring chart with default settings.<a name="line.376"></a>
<FONT color="green">377</FONT>         * &lt;P&gt;<a name="line.377"></a>
<FONT color="green">378</FONT>         * The chart object returned by this method uses a {@link RingPlot} <a name="line.378"></a>
<FONT color="green">379</FONT>         * instance as the plot.<a name="line.379"></a>
<FONT color="green">380</FONT>         *<a name="line.380"></a>
<FONT color="green">381</FONT>         * @param title  the chart title (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.381"></a>
<FONT color="green">382</FONT>         * @param dataset  the dataset for the chart (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.382"></a>
<FONT color="green">383</FONT>         * @param legend  a flag specifying whether or not a legend is required.<a name="line.383"></a>
<FONT color="green">384</FONT>         * @param tooltips  configure chart to generate tool tips?<a name="line.384"></a>