waterfallbarrenderer.html

jfreechart1。0。2的api。

<FONT color="green">290</FONT>         * @param dataset  the dataset.<a name="line.290"></a>
<FONT color="green">291</FONT>         * @param row  the row index (zero-based).<a name="line.291"></a>
<FONT color="green">292</FONT>         * @param column  the column index (zero-based).<a name="line.292"></a>
<FONT color="green">293</FONT>         * @param pass  the pass index.<a name="line.293"></a>
<FONT color="green">294</FONT>         */<a name="line.294"></a>
<FONT color="green">295</FONT>        public void drawItem(Graphics2D g2,<a name="line.295"></a>
<FONT color="green">296</FONT>                             CategoryItemRendererState state,<a name="line.296"></a>
<FONT color="green">297</FONT>                             Rectangle2D dataArea,<a name="line.297"></a>
<FONT color="green">298</FONT>                             CategoryPlot plot,<a name="line.298"></a>
<FONT color="green">299</FONT>                             CategoryAxis domainAxis,<a name="line.299"></a>
<FONT color="green">300</FONT>                             ValueAxis rangeAxis,<a name="line.300"></a>
<FONT color="green">301</FONT>                             CategoryDataset dataset,<a name="line.301"></a>
<FONT color="green">302</FONT>                             int row,<a name="line.302"></a>
<FONT color="green">303</FONT>                             int column,<a name="line.303"></a>
<FONT color="green">304</FONT>                             int pass) {<a name="line.304"></a>
<FONT color="green">305</FONT>    <a name="line.305"></a>
<FONT color="green">306</FONT>            double previous = state.getSeriesRunningTotal();<a name="line.306"></a>
<FONT color="green">307</FONT>            if (column == dataset.getColumnCount() - 1) {<a name="line.307"></a>
<FONT color="green">308</FONT>                previous = 0.0;<a name="line.308"></a>
<FONT color="green">309</FONT>            }<a name="line.309"></a>
<FONT color="green">310</FONT>            double current = 0.0;<a name="line.310"></a>
<FONT color="green">311</FONT>            Number n = dataset.getValue(row, column);<a name="line.311"></a>
<FONT color="green">312</FONT>            if (n != null) {<a name="line.312"></a>
<FONT color="green">313</FONT>                current = previous + n.doubleValue();<a name="line.313"></a>
<FONT color="green">314</FONT>            }<a name="line.314"></a>
<FONT color="green">315</FONT>            state.setSeriesRunningTotal(current);<a name="line.315"></a>
<FONT color="green">316</FONT>            <a name="line.316"></a>
<FONT color="green">317</FONT>            int seriesCount = getRowCount();<a name="line.317"></a>
<FONT color="green">318</FONT>            int categoryCount = getColumnCount();<a name="line.318"></a>
<FONT color="green">319</FONT>            PlotOrientation orientation = plot.getOrientation();<a name="line.319"></a>
<FONT color="green">320</FONT>            <a name="line.320"></a>
<FONT color="green">321</FONT>            double rectX = 0.0;<a name="line.321"></a>
<FONT color="green">322</FONT>            double rectY = 0.0;<a name="line.322"></a>
<FONT color="green">323</FONT>    <a name="line.323"></a>
<FONT color="green">324</FONT>            RectangleEdge domainAxisLocation = plot.getDomainAxisEdge();<a name="line.324"></a>
<FONT color="green">325</FONT>            RectangleEdge rangeAxisLocation = plot.getRangeAxisEdge();<a name="line.325"></a>
<FONT color="green">326</FONT>            <a name="line.326"></a>
<FONT color="green">327</FONT>            // Y0<a name="line.327"></a>
<FONT color="green">328</FONT>            double j2dy0 = rangeAxis.valueToJava2D(<a name="line.328"></a>
<FONT color="green">329</FONT>                previous, dataArea, rangeAxisLocation<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>            // Y1<a name="line.332"></a>
<FONT color="green">333</FONT>            double j2dy1 = rangeAxis.valueToJava2D(<a name="line.333"></a>
<FONT color="green">334</FONT>                current, dataArea, rangeAxisLocation<a name="line.334"></a>
<FONT color="green">335</FONT>            );<a name="line.335"></a>
<FONT color="green">336</FONT>    <a name="line.336"></a>
<FONT color="green">337</FONT>            double valDiff = current - previous;<a name="line.337"></a>
<FONT color="green">338</FONT>            if (j2dy1 &lt; j2dy0) {<a name="line.338"></a>
<FONT color="green">339</FONT>                double temp = j2dy1;<a name="line.339"></a>
<FONT color="green">340</FONT>                j2dy1 = j2dy0;<a name="line.340"></a>
<FONT color="green">341</FONT>                j2dy0 = temp;<a name="line.341"></a>
<FONT color="green">342</FONT>            }<a name="line.342"></a>
<FONT color="green">343</FONT>    <a name="line.343"></a>
<FONT color="green">344</FONT>            // BAR WIDTH<a name="line.344"></a>
<FONT color="green">345</FONT>            double rectWidth = state.getBarWidth();<a name="line.345"></a>
<FONT color="green">346</FONT>    <a name="line.346"></a>
<FONT color="green">347</FONT>            // BAR HEIGHT<a name="line.347"></a>
<FONT color="green">348</FONT>            double rectHeight = Math.max(<a name="line.348"></a>
<FONT color="green">349</FONT>                getMinimumBarLength(), Math.abs(j2dy1 - j2dy0)<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>            if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.352"></a>
<FONT color="green">353</FONT>                // BAR Y<a name="line.353"></a>
<FONT color="green">354</FONT>                rectY = domainAxis.getCategoryStart(<a name="line.354"></a>
<FONT color="green">355</FONT>                    column, getColumnCount(), dataArea, domainAxisLocation<a name="line.355"></a>
<FONT color="green">356</FONT>                );<a name="line.356"></a>
<FONT color="green">357</FONT>                if (seriesCount &gt; 1) {<a name="line.357"></a>
<FONT color="green">358</FONT>                    double seriesGap = dataArea.getHeight() * getItemMargin()<a name="line.358"></a>
<FONT color="green">359</FONT>                                       / (categoryCount * (seriesCount - 1));<a name="line.359"></a>
<FONT color="green">360</FONT>                    rectY = rectY + row * (state.getBarWidth() + seriesGap);<a name="line.360"></a>
<FONT color="green">361</FONT>                }<a name="line.361"></a>
<FONT color="green">362</FONT>                else {<a name="line.362"></a>
<FONT color="green">363</FONT>                    rectY = rectY + row * state.getBarWidth();<a name="line.363"></a>
<FONT color="green">364</FONT>                }<a name="line.364"></a>
<FONT color="green">365</FONT>                 <a name="line.365"></a>
<FONT color="green">366</FONT>                rectX = j2dy0;<a name="line.366"></a>
<FONT color="green">367</FONT>                rectHeight = state.getBarWidth();<a name="line.367"></a>
<FONT color="green">368</FONT>                rectWidth = Math.max(<a name="line.368"></a>
<FONT color="green">369</FONT>                    getMinimumBarLength(), Math.abs(j2dy1 - j2dy0)<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>            }<a name="line.372"></a>
<FONT color="green">373</FONT>            else if (orientation == PlotOrientation.VERTICAL) {<a name="line.373"></a>
<FONT color="green">374</FONT>                // BAR X<a name="line.374"></a>
<FONT color="green">375</FONT>                rectX = domainAxis.getCategoryStart(<a name="line.375"></a>
<FONT color="green">376</FONT>                    column, getColumnCount(), dataArea, domainAxisLocation<a name="line.376"></a>
<FONT color="green">377</FONT>                );<a name="line.377"></a>
<FONT color="green">378</FONT>    <a name="line.378"></a>
<FONT color="green">379</FONT>                if (seriesCount &gt; 1) {<a name="line.379"></a>
<FONT color="green">380</FONT>                    double seriesGap = dataArea.getWidth() * getItemMargin()<a name="line.380"></a>
<FONT color="green">381</FONT>                                       / (categoryCount * (seriesCount - 1));<a name="line.381"></a>
<FONT color="green">382</FONT>                    rectX = rectX + row * (state.getBarWidth() + seriesGap);<a name="line.382"></a>
<FONT color="green">383</FONT>                }<a name="line.383"></a>
<FONT color="green">384</FONT>                else {<a name="line.384"></a>
<FONT color="green">385</FONT>                    rectX = rectX + row * state.getBarWidth();<a name="line.385"></a>
<FONT color="green">386</FONT>                }<a name="line.386"></a>
<FONT color="green">387</FONT>    <a name="line.387"></a>
<FONT color="green">388</FONT>                rectY = j2dy0;<a name="line.388"></a>
<FONT color="green">389</FONT>            }<a name="line.389"></a>
<FONT color="green">390</FONT>            Rectangle2D bar = new Rectangle2D.Double(<a name="line.390"></a>
<FONT color="green">391</FONT>                rectX, rectY, rectWidth, rectHeight<a name="line.391"></a>
<FONT color="green">392</FONT>            );<a name="line.392"></a>
<FONT color="green">393</FONT>            Paint seriesPaint = getFirstBarPaint();<a name="line.393"></a>
<FONT color="green">394</FONT>            if (column == 0) {<a name="line.394"></a>
<FONT color="green">395</FONT>                seriesPaint = getFirstBarPaint();<a name="line.395"></a>
<FONT color="green">396</FONT>            }<a name="line.396"></a>
<FONT color="green">397</FONT>            else if (column == categoryCount - 1) {<a name="line.397"></a>
<FONT color="green">398</FONT>                seriesPaint = getLastBarPaint();    <a name="line.398"></a>
<FONT color="green">399</FONT>            } <a name="line.399"></a>
<FONT color="green">400</FONT>            else {<a name="line.400"></a>
<FONT color="green">401</FONT>                if (valDiff &lt; 0.0) {<a name="line.401"></a>
<FONT color="green">402</FONT>                    seriesPaint = getNegativeBarPaint();<a name="line.402"></a>
<FONT color="green">403</FONT>                } <a name="line.403"></a>
<FONT color="green">404</FONT>                else if (valDiff &gt; 0.0) {<a name="line.404"></a>
<FONT color="green">405</FONT>                    seriesPaint = getPositiveBarPaint();<a name="line.405"></a>
<FONT color="green">406</FONT>                } <a name="line.406"></a>
<FONT color="green">407</FONT>                else {<a name="line.407"></a>
<FONT color="green">408</FONT>                    seriesPaint = getLastBarPaint();<a name="line.408"></a>
<FONT color="green">409</FONT>                }<a name="line.409"></a>
<FONT color="green">410</FONT>            }<a name="line.410"></a>
<FONT color="green">411</FONT>            if (getGradientPaintTransformer() != null <a name="line.411"></a>
<FONT color="green">412</FONT>                    &amp;&amp; seriesPaint instanceof GradientPaint) {<a name="line.412"></a>
<FONT color="green">413</FONT>                GradientPaint gp = (GradientPaint) seriesPaint;<a name="line.413"></a>
<FONT color="green">414</FONT>                seriesPaint = getGradientPaintTransformer().transform(gp, bar);<a name="line.414"></a>
<FONT color="green">415</FONT>            }<a name="line.415"></a>
<FONT color="green">416</FONT>            g2.setPaint(seriesPaint);<a name="line.416"></a>
<FONT color="green">417</FONT>            g2.fill(bar);<a name="line.417"></a>
<FONT color="green">418</FONT>            <a name="line.418"></a>
<FONT color="green">419</FONT>            // draw the outline...<a name="line.419"></a>
<FONT color="green">420</FONT>            if (isDrawBarOutline() <a name="line.420"></a>
<FONT color="green">421</FONT>                    &amp;&amp; state.getBarWidth() &gt; BAR_OUTLINE_WIDTH_THRESHOLD) {<a name="line.421"></a>
<FONT color="green">422</FONT>                Stroke stroke = getItemOutlineStroke(row, column);<a name="line.422"></a>
<FONT color="green">423</FONT>                Paint paint = getItemOutlinePaint(row, column);<a name="line.423"></a>
<FONT color="green">424</FONT>                if (stroke != null &amp;&amp; paint != null) {<a name="line.424"></a>
<FONT color="green">425</FONT>                    g2.setStroke(stroke);<a name="line.425"></a>
<FONT color="green">426</FONT>                    g2.setPaint(paint);<a name="line.426"></a>
<FONT color="green">427</FONT>                    g2.draw(bar);<a name="line.427"></a>
<FONT color="green">428</FONT>                }<a name="line.428"></a>
<FONT color="green">429</FONT>            }<a name="line.429"></a>
<FONT color="green">430</FONT>            <a name="line.430"></a>
<FONT color="green">431</FONT>            CategoryItemLabelGenerator generator <a name="line.431"></a>
<FONT color="green">432</FONT>                = getItemLabelGenerator(row, column);<a name="line.432"></a>
<FONT color="green">433</FONT>            if (generator != null &amp;&amp; isItemLabelVisible(row, column)) {<a name="line.433"></a>
<FONT color="green">434</FONT>                drawItemLabel(<a name="line.434"></a>
<FONT color="green">435</FONT>                    g2, dataset, row, column, plot, generator, bar, (valDiff &lt; 0.0)<a name="line.435"></a>