xybarrenderer.html

jfreechart1。0。2的api。

<FONT color="green">421</FONT>         * @param dataset  the data.<a name="line.421"></a>
<FONT color="green">422</FONT>         * @param info  an optional info collection object to return data back to <a name="line.422"></a>
<FONT color="green">423</FONT>         *              the caller.<a name="line.423"></a>
<FONT color="green">424</FONT>         *<a name="line.424"></a>
<FONT color="green">425</FONT>         * @return A state object.<a name="line.425"></a>
<FONT color="green">426</FONT>         */<a name="line.426"></a>
<FONT color="green">427</FONT>        public XYItemRendererState initialise(Graphics2D g2, Rectangle2D dataArea,<a name="line.427"></a>
<FONT color="green">428</FONT>                XYPlot plot, XYDataset dataset, PlotRenderingInfo info) {<a name="line.428"></a>
<FONT color="green">429</FONT>    <a name="line.429"></a>
<FONT color="green">430</FONT>            XYBarRendererState state = new XYBarRendererState(info);<a name="line.430"></a>
<FONT color="green">431</FONT>            ValueAxis rangeAxis <a name="line.431"></a>
<FONT color="green">432</FONT>                = plot.getRangeAxisForDataset(plot.indexOf(dataset));<a name="line.432"></a>
<FONT color="green">433</FONT>            state.setG2Base(rangeAxis.valueToJava2D(this.base, dataArea, <a name="line.433"></a>
<FONT color="green">434</FONT>                    plot.getRangeAxisEdge()));<a name="line.434"></a>
<FONT color="green">435</FONT>            return state;<a name="line.435"></a>
<FONT color="green">436</FONT>    <a name="line.436"></a>
<FONT color="green">437</FONT>        }<a name="line.437"></a>
<FONT color="green">438</FONT>    <a name="line.438"></a>
<FONT color="green">439</FONT>        /**<a name="line.439"></a>
<FONT color="green">440</FONT>         * Returns a default legend item for the specified series.  Subclasses <a name="line.440"></a>
<FONT color="green">441</FONT>         * should override this method to generate customised items.<a name="line.441"></a>
<FONT color="green">442</FONT>         *<a name="line.442"></a>
<FONT color="green">443</FONT>         * @param datasetIndex  the dataset index (zero-based).<a name="line.443"></a>
<FONT color="green">444</FONT>         * @param series  the series index (zero-based).<a name="line.444"></a>
<FONT color="green">445</FONT>         *<a name="line.445"></a>
<FONT color="green">446</FONT>         * @return A legend item for the series.<a name="line.446"></a>
<FONT color="green">447</FONT>         */<a name="line.447"></a>
<FONT color="green">448</FONT>        public LegendItem getLegendItem(int datasetIndex, int series) {<a name="line.448"></a>
<FONT color="green">449</FONT>            LegendItem result = null;<a name="line.449"></a>
<FONT color="green">450</FONT>            XYPlot xyplot = getPlot();<a name="line.450"></a>
<FONT color="green">451</FONT>            if (xyplot != null) {<a name="line.451"></a>
<FONT color="green">452</FONT>                XYDataset dataset = xyplot.getDataset(datasetIndex);<a name="line.452"></a>
<FONT color="green">453</FONT>                if (dataset != null) {<a name="line.453"></a>
<FONT color="green">454</FONT>                    XYSeriesLabelGenerator lg = getLegendItemLabelGenerator();<a name="line.454"></a>
<FONT color="green">455</FONT>                    String label = lg.generateLabel(dataset, series);<a name="line.455"></a>
<FONT color="green">456</FONT>                    String description = label;<a name="line.456"></a>
<FONT color="green">457</FONT>                    String toolTipText = null;<a name="line.457"></a>
<FONT color="green">458</FONT>                    if (getLegendItemToolTipGenerator() != null) {<a name="line.458"></a>
<FONT color="green">459</FONT>                        toolTipText = getLegendItemToolTipGenerator().generateLabel(<a name="line.459"></a>
<FONT color="green">460</FONT>                                dataset, series);<a name="line.460"></a>
<FONT color="green">461</FONT>                    }<a name="line.461"></a>
<FONT color="green">462</FONT>                    String urlText = null;<a name="line.462"></a>
<FONT color="green">463</FONT>                    if (getLegendItemURLGenerator() != null) {<a name="line.463"></a>
<FONT color="green">464</FONT>                        urlText = getLegendItemURLGenerator().generateLabel(<a name="line.464"></a>
<FONT color="green">465</FONT>                                dataset, series);<a name="line.465"></a>
<FONT color="green">466</FONT>                    }<a name="line.466"></a>
<FONT color="green">467</FONT>                    Shape shape = this.legendBar;<a name="line.467"></a>
<FONT color="green">468</FONT>                    Paint paint = getSeriesPaint(series);<a name="line.468"></a>
<FONT color="green">469</FONT>                    Paint outlinePaint = getSeriesOutlinePaint(series);<a name="line.469"></a>
<FONT color="green">470</FONT>                    Stroke outlineStroke = getSeriesOutlineStroke(series);<a name="line.470"></a>
<FONT color="green">471</FONT>                    result = new LegendItem(label, description, toolTipText, <a name="line.471"></a>
<FONT color="green">472</FONT>                            urlText, shape, paint, outlineStroke, outlinePaint);<a name="line.472"></a>
<FONT color="green">473</FONT>                }<a name="line.473"></a>
<FONT color="green">474</FONT>            }<a name="line.474"></a>
<FONT color="green">475</FONT>            return result;<a name="line.475"></a>
<FONT color="green">476</FONT>        }<a name="line.476"></a>
<FONT color="green">477</FONT>        <a name="line.477"></a>
<FONT color="green">478</FONT>        /**<a name="line.478"></a>
<FONT color="green">479</FONT>         * Draws the visual representation of a single data item.<a name="line.479"></a>
<FONT color="green">480</FONT>         *<a name="line.480"></a>
<FONT color="green">481</FONT>         * @param g2  the graphics device.<a name="line.481"></a>
<FONT color="green">482</FONT>         * @param state  the renderer state.<a name="line.482"></a>
<FONT color="green">483</FONT>         * @param dataArea  the area within which the plot is being drawn.<a name="line.483"></a>
<FONT color="green">484</FONT>         * @param info  collects information about the drawing.<a name="line.484"></a>
<FONT color="green">485</FONT>         * @param plot  the plot (can be used to obtain standard color <a name="line.485"></a>
<FONT color="green">486</FONT>         *              information etc).<a name="line.486"></a>
<FONT color="green">487</FONT>         * @param domainAxis  the domain axis.<a name="line.487"></a>
<FONT color="green">488</FONT>         * @param rangeAxis  the range axis.<a name="line.488"></a>
<FONT color="green">489</FONT>         * @param dataset  the dataset.<a name="line.489"></a>
<FONT color="green">490</FONT>         * @param series  the series index (zero-based).<a name="line.490"></a>
<FONT color="green">491</FONT>         * @param item  the item index (zero-based).<a name="line.491"></a>
<FONT color="green">492</FONT>         * @param crosshairState  crosshair information for the plot <a name="line.492"></a>
<FONT color="green">493</FONT>         *                        (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.493"></a>
<FONT color="green">494</FONT>         * @param pass  the pass index.<a name="line.494"></a>
<FONT color="green">495</FONT>         */<a name="line.495"></a>
<FONT color="green">496</FONT>        public void drawItem(Graphics2D g2,<a name="line.496"></a>
<FONT color="green">497</FONT>                             XYItemRendererState state,<a name="line.497"></a>
<FONT color="green">498</FONT>                             Rectangle2D dataArea,<a name="line.498"></a>
<FONT color="green">499</FONT>                             PlotRenderingInfo info,<a name="line.499"></a>
<FONT color="green">500</FONT>                             XYPlot plot,<a name="line.500"></a>
<FONT color="green">501</FONT>                             ValueAxis domainAxis,<a name="line.501"></a>
<FONT color="green">502</FONT>                             ValueAxis rangeAxis,<a name="line.502"></a>
<FONT color="green">503</FONT>                             XYDataset dataset,<a name="line.503"></a>
<FONT color="green">504</FONT>                             int series,<a name="line.504"></a>
<FONT color="green">505</FONT>                             int item,<a name="line.505"></a>
<FONT color="green">506</FONT>                             CrosshairState crosshairState,<a name="line.506"></a>
<FONT color="green">507</FONT>                             int pass) {<a name="line.507"></a>
<FONT color="green">508</FONT>    <a name="line.508"></a>
<FONT color="green">509</FONT>            if (!getItemVisible(series, item)) {<a name="line.509"></a>
<FONT color="green">510</FONT>                return;   <a name="line.510"></a>
<FONT color="green">511</FONT>            }<a name="line.511"></a>
<FONT color="green">512</FONT>            IntervalXYDataset intervalDataset = (IntervalXYDataset) dataset;<a name="line.512"></a>
<FONT color="green">513</FONT>    <a name="line.513"></a>
<FONT color="green">514</FONT>            double value0;<a name="line.514"></a>
<FONT color="green">515</FONT>            double value1;<a name="line.515"></a>
<FONT color="green">516</FONT>            if (this.useYInterval) {<a name="line.516"></a>
<FONT color="green">517</FONT>                value0 = intervalDataset.getStartYValue(series, item);<a name="line.517"></a>
<FONT color="green">518</FONT>                value1 = intervalDataset.getEndYValue(series, item);<a name="line.518"></a>
<FONT color="green">519</FONT>            }<a name="line.519"></a>
<FONT color="green">520</FONT>            else {<a name="line.520"></a>
<FONT color="green">521</FONT>                value0 = this.base;<a name="line.521"></a>
<FONT color="green">522</FONT>                value1 = intervalDataset.getYValue(series, item);<a name="line.522"></a>
<FONT color="green">523</FONT>            }<a name="line.523"></a>
<FONT color="green">524</FONT>            if (Double.isNaN(value0) || Double.isNaN(value1)) {<a name="line.524"></a>
<FONT color="green">525</FONT>                return;<a name="line.525"></a>
<FONT color="green">526</FONT>            }<a name="line.526"></a>
<FONT color="green">527</FONT>    <a name="line.527"></a>
<FONT color="green">528</FONT>            double translatedValue0 = rangeAxis.valueToJava2D(value0, dataArea, <a name="line.528"></a>
<FONT color="green">529</FONT>                    plot.getRangeAxisEdge());<a name="line.529"></a>
<FONT color="green">530</FONT>            double translatedValue1 = rangeAxis.valueToJava2D(value1, dataArea, <a name="line.530"></a>
<FONT color="green">531</FONT>                    plot.getRangeAxisEdge());<a name="line.531"></a>
<FONT color="green">532</FONT>    <a name="line.532"></a>
<FONT color="green">533</FONT>            RectangleEdge location = plot.getDomainAxisEdge();<a name="line.533"></a>
<FONT color="green">534</FONT>            double startX = intervalDataset.getStartXValue(series, item);<a name="line.534"></a>
<FONT color="green">535</FONT>            if (Double.isNaN(startX)) {<a name="line.535"></a>
<FONT color="green">536</FONT>                return;<a name="line.536"></a>
<FONT color="green">537</FONT>            }<a name="line.537"></a>
<FONT color="green">538</FONT>            double translatedStartX = domainAxis.valueToJava2D(startX, dataArea, <a name="line.538"></a>
<FONT color="green">539</FONT>                    location);<a name="line.539"></a>
<FONT color="green">540</FONT>    <a name="line.540"></a>
<FONT color="green">541</FONT>            double endX = intervalDataset.getEndXValue(series, item);<a name="line.541"></a>
<FONT color="green">542</FONT>            if (Double.isNaN(endX)) {<a name="line.542"></a>
<FONT color="green">543</FONT>                return;<a name="line.543"></a>
<FONT color="green">544</FONT>            }<a name="line.544"></a>
<FONT color="green">545</FONT>            double translatedEndX = domainAxis.valueToJava2D(endX, dataArea, <a name="line.545"></a>
<FONT color="green">546</FONT>                    location);<a name="line.546"></a>
<FONT color="green">547</FONT>    <a name="line.547"></a>
<FONT color="green">548</FONT>            double translatedWidth = Math.max(1, Math.abs(translatedEndX <a name="line.548"></a>
<FONT color="green">549</FONT>                    - translatedStartX));<a name="line.549"></a>
<FONT color="green">550</FONT>            double translatedHeight = Math.abs(translatedValue1 - translatedValue0);<a name="line.550"></a>
<FONT color="green">551</FONT>    <a name="line.551"></a>
<FONT color="green">552</FONT>            if (getMargin() &gt; 0.0) {<a name="line.552"></a>
<FONT color="green">553</FONT>                double cut = translatedWidth * getMargin();<a name="line.553"></a>
<FONT color="green">554</FONT>                translatedWidth = translatedWidth - cut;<a name="line.554"></a>
<FONT color="green">555</FONT>                translatedStartX = translatedStartX + cut / 2;<a name="line.555"></a>
<FONT color="green">556</FONT>            }<a name="line.556"></a>
<FONT color="green">557</FONT>    <a name="line.557"></a>
<FONT color="green">558</FONT>            Rectangle2D bar = null;<a name="line.558"></a>
<FONT color="green">559</FONT>            PlotOrientation orientation = plot.getOrientation();<a name="line.559"></a>
<FONT color="green">560</FONT>            if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.560"></a>
<FONT color="green">561</FONT>                bar = new Rectangle2D.Double(<a name="line.561"></a>