xydifferencerenderer.html

jfreechart1。0。2的api。

<FONT color="green">409</FONT>         * @param info  collects information about the drawing.<a name="line.409"></a>
<FONT color="green">410</FONT>         * @param plot  the plot (can be used to obtain standard color information <a name="line.410"></a>
<FONT color="green">411</FONT>         *              etc).<a name="line.411"></a>
<FONT color="green">412</FONT>         * @param domainAxis  the domain (horizontal) axis.<a name="line.412"></a>
<FONT color="green">413</FONT>         * @param rangeAxis  the range (vertical) axis.<a name="line.413"></a>
<FONT color="green">414</FONT>         * @param dataset  the dataset.<a name="line.414"></a>
<FONT color="green">415</FONT>         * @param series  the series index (zero-based).<a name="line.415"></a>
<FONT color="green">416</FONT>         * @param item  the item index (zero-based).<a name="line.416"></a>
<FONT color="green">417</FONT>         * @param crosshairState  crosshair information for the plot <a name="line.417"></a>
<FONT color="green">418</FONT>         *                        (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.418"></a>
<FONT color="green">419</FONT>         */<a name="line.419"></a>
<FONT color="green">420</FONT>        protected void drawItemPass1(Graphics2D g2,<a name="line.420"></a>
<FONT color="green">421</FONT>                                     Rectangle2D dataArea,<a name="line.421"></a>
<FONT color="green">422</FONT>                                     PlotRenderingInfo info,<a name="line.422"></a>
<FONT color="green">423</FONT>                                     XYPlot plot,<a name="line.423"></a>
<FONT color="green">424</FONT>                                     ValueAxis domainAxis,<a name="line.424"></a>
<FONT color="green">425</FONT>                                     ValueAxis rangeAxis,<a name="line.425"></a>
<FONT color="green">426</FONT>                                     XYDataset dataset,<a name="line.426"></a>
<FONT color="green">427</FONT>                                     int series,<a name="line.427"></a>
<FONT color="green">428</FONT>                                     int item,<a name="line.428"></a>
<FONT color="green">429</FONT>                                     CrosshairState crosshairState) {<a name="line.429"></a>
<FONT color="green">430</FONT>    <a name="line.430"></a>
<FONT color="green">431</FONT>            Shape entityArea = null;<a name="line.431"></a>
<FONT color="green">432</FONT>            EntityCollection entities = null;<a name="line.432"></a>
<FONT color="green">433</FONT>            if (info != null) {<a name="line.433"></a>
<FONT color="green">434</FONT>                entities = info.getOwner().getEntityCollection();<a name="line.434"></a>
<FONT color="green">435</FONT>            }<a name="line.435"></a>
<FONT color="green">436</FONT>    <a name="line.436"></a>
<FONT color="green">437</FONT>            Paint seriesPaint = getItemPaint(series, item);<a name="line.437"></a>
<FONT color="green">438</FONT>            Stroke seriesStroke = getItemStroke(series, item);<a name="line.438"></a>
<FONT color="green">439</FONT>            g2.setPaint(seriesPaint);<a name="line.439"></a>
<FONT color="green">440</FONT>            g2.setStroke(seriesStroke);<a name="line.440"></a>
<FONT color="green">441</FONT>    <a name="line.441"></a>
<FONT color="green">442</FONT>            if (series == 0) {<a name="line.442"></a>
<FONT color="green">443</FONT>    <a name="line.443"></a>
<FONT color="green">444</FONT>                PlotOrientation orientation = plot.getOrientation(); <a name="line.444"></a>
<FONT color="green">445</FONT>                RectangleEdge domainAxisLocation = plot.getDomainAxisEdge();<a name="line.445"></a>
<FONT color="green">446</FONT>                RectangleEdge rangeAxisLocation = plot.getRangeAxisEdge();<a name="line.446"></a>
<FONT color="green">447</FONT>    <a name="line.447"></a>
<FONT color="green">448</FONT>                double x0 = dataset.getXValue(0, item);<a name="line.448"></a>
<FONT color="green">449</FONT>                double y0 = dataset.getYValue(0, item);<a name="line.449"></a>
<FONT color="green">450</FONT>                double x1 = dataset.getXValue(1, item);<a name="line.450"></a>
<FONT color="green">451</FONT>                double y1 = dataset.getYValue(1, item);<a name="line.451"></a>
<FONT color="green">452</FONT>    <a name="line.452"></a>
<FONT color="green">453</FONT>                double transX0 = domainAxis.valueToJava2D(x0, dataArea, <a name="line.453"></a>
<FONT color="green">454</FONT>                        domainAxisLocation);<a name="line.454"></a>
<FONT color="green">455</FONT>                double transY0 = rangeAxis.valueToJava2D(y0, dataArea, <a name="line.455"></a>
<FONT color="green">456</FONT>                        rangeAxisLocation);<a name="line.456"></a>
<FONT color="green">457</FONT>                double transX1 = domainAxis.valueToJava2D(x1, dataArea, <a name="line.457"></a>
<FONT color="green">458</FONT>                        domainAxisLocation);<a name="line.458"></a>
<FONT color="green">459</FONT>                double transY1 = rangeAxis.valueToJava2D(y1, dataArea, <a name="line.459"></a>
<FONT color="green">460</FONT>                        rangeAxisLocation);<a name="line.460"></a>
<FONT color="green">461</FONT>    <a name="line.461"></a>
<FONT color="green">462</FONT>                if (item &gt; 0) {<a name="line.462"></a>
<FONT color="green">463</FONT>                    // get the previous data points...<a name="line.463"></a>
<FONT color="green">464</FONT>                    double prevx0 = dataset.getXValue(0, item - 1);<a name="line.464"></a>
<FONT color="green">465</FONT>                    double prevy0 = dataset.getYValue(0, item - 1);<a name="line.465"></a>
<FONT color="green">466</FONT>                    double prevx1 = dataset.getXValue(1, item - 1);<a name="line.466"></a>
<FONT color="green">467</FONT>                    double prevy1 = dataset.getYValue(1, item - 1);<a name="line.467"></a>
<FONT color="green">468</FONT>    <a name="line.468"></a>
<FONT color="green">469</FONT>                    double prevtransX0 = domainAxis.valueToJava2D(prevx0, dataArea,<a name="line.469"></a>
<FONT color="green">470</FONT>                            domainAxisLocation);<a name="line.470"></a>
<FONT color="green">471</FONT>                    double prevtransY0 = rangeAxis.valueToJava2D(prevy0, dataArea, <a name="line.471"></a>
<FONT color="green">472</FONT>                            rangeAxisLocation);<a name="line.472"></a>
<FONT color="green">473</FONT>                    double prevtransX1 = domainAxis.valueToJava2D(prevx1, dataArea, <a name="line.473"></a>
<FONT color="green">474</FONT>                            domainAxisLocation);<a name="line.474"></a>
<FONT color="green">475</FONT>                    double prevtransY1 = rangeAxis.valueToJava2D(prevy1, dataArea, <a name="line.475"></a>
<FONT color="green">476</FONT>                            rangeAxisLocation);<a name="line.476"></a>
<FONT color="green">477</FONT>    <a name="line.477"></a>
<FONT color="green">478</FONT>                    Line2D line0 = null;<a name="line.478"></a>
<FONT color="green">479</FONT>                    Line2D line1 = null;<a name="line.479"></a>
<FONT color="green">480</FONT>                    if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.480"></a>
<FONT color="green">481</FONT>                        line0 = new Line2D.Double(transY0, transX0, prevtransY0, <a name="line.481"></a>
<FONT color="green">482</FONT>                                prevtransX0);<a name="line.482"></a>
<FONT color="green">483</FONT>                        line1 = new Line2D.Double(transY1, transX1, prevtransY1, <a name="line.483"></a>
<FONT color="green">484</FONT>                                prevtransX1);<a name="line.484"></a>
<FONT color="green">485</FONT>                    }<a name="line.485"></a>
<FONT color="green">486</FONT>                    else if (orientation == PlotOrientation.VERTICAL) {<a name="line.486"></a>
<FONT color="green">487</FONT>                        line0 = new Line2D.Double(transX0, transY0, prevtransX0, <a name="line.487"></a>
<FONT color="green">488</FONT>                                prevtransY0);<a name="line.488"></a>
<FONT color="green">489</FONT>                        line1 = new Line2D.Double(transX1, transY1, prevtransX1, <a name="line.489"></a>
<FONT color="green">490</FONT>                                prevtransY1);<a name="line.490"></a>
<FONT color="green">491</FONT>                    }<a name="line.491"></a>
<FONT color="green">492</FONT>                    if (line0 != null &amp;&amp; line0.intersects(dataArea)) {<a name="line.492"></a>
<FONT color="green">493</FONT>                        g2.setPaint(getItemPaint(series, item));<a name="line.493"></a>
<FONT color="green">494</FONT>                        g2.setStroke(getItemStroke(series, item));<a name="line.494"></a>
<FONT color="green">495</FONT>                        g2.draw(line0);<a name="line.495"></a>
<FONT color="green">496</FONT>                    }<a name="line.496"></a>
<FONT color="green">497</FONT>                    if (line1 != null &amp;&amp; line1.intersects(dataArea)) {<a name="line.497"></a>
<FONT color="green">498</FONT>                        g2.setPaint(getItemPaint(1, item));<a name="line.498"></a>
<FONT color="green">499</FONT>                        g2.setStroke(getItemStroke(1, item));<a name="line.499"></a>
<FONT color="green">500</FONT>                        g2.draw(line1);<a name="line.500"></a>
<FONT color="green">501</FONT>                    }<a name="line.501"></a>
<FONT color="green">502</FONT>                }<a name="line.502"></a>
<FONT color="green">503</FONT>    <a name="line.503"></a>
<FONT color="green">504</FONT>                if (getShapesVisible()) {<a name="line.504"></a>
<FONT color="green">505</FONT>                    Shape shape0 = getItemShape(series, item);<a name="line.505"></a>
<FONT color="green">506</FONT>                    if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.506"></a>
<FONT color="green">507</FONT>                        shape0 = ShapeUtilities.createTranslatedShape(shape0, <a name="line.507"></a>
<FONT color="green">508</FONT>                                transY0, transX0);<a name="line.508"></a>
<FONT color="green">509</FONT>                    }<a name="line.509"></a>
<FONT color="green">510</FONT>                    else {  // vertical<a name="line.510"></a>
<FONT color="green">511</FONT>                        shape0 = ShapeUtilities.createTranslatedShape(shape0, <a name="line.511"></a>
<FONT color="green">512</FONT>                                transX0, transY0);<a name="line.512"></a>
<FONT color="green">513</FONT>                    }<a name="line.513"></a>
<FONT color="green">514</FONT>                    if (shape0.intersects(dataArea)) {<a name="line.514"></a>
<FONT color="green">515</FONT>                        g2.setPaint(getItemPaint(series, item));<a name="line.515"></a>
<FONT color="green">516</FONT>                        g2.fill(shape0);<a name="line.516"></a>
<FONT color="green">517</FONT>                    }<a name="line.517"></a>
<FONT color="green">518</FONT>                    entityArea = shape0;<a name="line.518"></a>
<FONT color="green">519</FONT>    <a name="line.519"></a>
<FONT color="green">520</FONT>                    // add an entity for the item...<a name="line.520"></a>
<FONT color="green">521</FONT>                    if (entities != null) {<a name="line.521"></a>
<FONT color="green">522</FONT>                        if (entityArea == null) {<a name="line.522"></a>
<FONT color="green">523</FONT>                            entityArea = new Rectangle2D.Double(transX0 - 2, <a name="line.523"></a>
<FONT color="green">524</FONT>                                    transY0 - 2, 4, 4);<a name="line.524"></a>
<FONT color="green">525</FONT>                        }<a name="line.525"></a>
<FONT color="green">526</FONT>                        String tip = null;<a name="line.526"></a>
<FONT color="green">527</FONT>                        XYToolTipGenerator generator = getToolTipGenerator(series, <a name="line.527"></a>
<FONT color="green">528</FONT>                                item);<a name="line.528"></a>
<FONT color="green">529</FONT>                        if (generator != null) {<a name="line.529"></a>
<FONT color="green">530</FONT>                            tip = generator.generateToolTip(dataset, series, item);<a name="line.530"></a>
<FONT color="green">531</FONT>                        }<a name="line.531"></a>
<FONT color="green">532</FONT>                        String url = null;<a name="line.532"></a>
<FONT color="green">533</FONT>                        if (getURLGenerator() != null) {<a name="line.533"></a>
<FONT color="green">534</FONT>                            url = getURLGenerator().generateURL(dataset, series, <a name="line.534"></a>
<FONT color="green">535</FONT>                                    item);<a name="line.535"></a>
<FONT color="green">536</FONT>                        }<a name="line.536"></a>
<FONT color="green">537</FONT>                        XYItemEntity entity = new XYItemEntity(entityArea, dataset, <a name="line.537"></a>
<FONT color="green">538</FONT>                                series, item, tip, url);<a name="line.538"></a>
<FONT color="green">539</FONT>                        entities.add(entity);<a name="line.539"></a>
<FONT color="green">540</FONT>                    }<a name="line.540"></a>
<FONT color="green">541</FONT>    <a name="line.541"></a>
<FONT color="green">542</FONT>                    Shape shape1 = getItemShape(series + 1, item);<a name="line.542"></a>
<FONT color="green">543</FONT>                    if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.543"></a>
<FONT color="green">544</FONT>                        shape1 = ShapeUtilities.createTranslatedShape(shape1, <a name="line.544"></a>
<FONT color="green">545</FONT>                                transY1, transX1);<a name="line.545"></a>