abstractxyitemrenderer.java

大家打开看看啊, 很有用的东西

                                   ValueAxis axis,
                                   Rectangle2D dataArea,
                                   double start, double end) {

        double x1 = axis.translateValueToJava2D(start, dataArea, plot.getDomainAxisEdge());
        double x2 = axis.translateValueToJava2D(end, dataArea, plot.getDomainAxisEdge());
        // need to change the next line to take account of plot orientation...
        Rectangle2D band = new Rectangle2D.Double(x1, dataArea.getMinY(),
                                                  x2 - x1, dataArea.getMaxY() - dataArea.getMinY());
        Paint paint = plot.getDomainTickBandPaint();

        if (paint != null) {
            g2.setPaint(paint);
            g2.fill(band);
        }

    }

    /**
     * Fills a band between two values on the range axis.  This can be used to color bands between
     * the grid lines.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the range axis.
     * @param dataArea  the data area.
     * @param start  the start value.
     * @param end  the end value.
     */
    public void fillRangeGridBand(Graphics2D g2,
                                  XYPlot plot,
                                  ValueAxis axis,
                                  Rectangle2D dataArea,
                                  double start, double end) {

        double y1 = axis.translateValueToJava2D(start, dataArea, plot.getRangeAxisEdge());
        double y2 = axis.translateValueToJava2D(end, dataArea, plot.getRangeAxisEdge());
        // need to change the next line to take account of the plot orientation
        Rectangle2D band = new Rectangle2D.Double(dataArea.getMinX(), y2,
                                                  dataArea.getWidth(), y1 - y2);
        Paint paint = plot.getRangeTickBandPaint();

        if (paint != null) {
            g2.setPaint(paint);
            g2.fill(band);
        }

    }

    /**
     * Draws a grid line against the range axis.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the value axis.
     * @param dataArea  the area for plotting data (not yet adjusted for any 3D effect).
     * @param value  the value at which the grid line should be drawn.
     *
     */
    public void drawDomainGridLine(Graphics2D g2,
                                   XYPlot plot,
                                   ValueAxis axis,
                                   Rectangle2D dataArea,
                                   double value) {

        Range range = axis.getRange();
        if (!range.contains(value)) {
            return;
        }

        PlotOrientation orientation = plot.getOrientation();
        double v = axis.translateValueToJava2D(value, dataArea, plot.getDomainAxisEdge());
        Line2D line = null;
        if (orientation == PlotOrientation.HORIZONTAL) {
            line = new Line2D.Double(dataArea.getMinX(), v, dataArea.getMaxX(), v);
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            line = new Line2D.Double(v, dataArea.getMinY(), v, dataArea.getMaxY());
        }

        Paint paint = plot.getDomainGridlinePaint();
        Stroke stroke = plot.getDomainGridlineStroke();
        g2.setPaint(paint != null ? paint : Plot.DEFAULT_OUTLINE_PAINT);
        g2.setStroke(stroke != null ? stroke : Plot.DEFAULT_OUTLINE_STROKE);
        g2.draw(line);

    }

    /**
     * Draws a grid line against the range axis.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the value axis.
     * @param dataArea  the area for plotting data (not yet adjusted for any 3D effect).
     * @param value  the value at which the grid line should be drawn.
     *
     */
    public void drawRangeGridLine(Graphics2D g2,
                                  XYPlot plot,
                                  ValueAxis axis,
                                  Rectangle2D dataArea,
                                  double value) {

        Range range = axis.getRange();
        if (!range.contains(value)) {
            return;
        }

        PlotOrientation orientation = plot.getOrientation();
        Line2D line = null;
        double v = axis.translateValueToJava2D(value, dataArea, plot.getRangeAxisEdge());
        if (orientation == PlotOrientation.HORIZONTAL) {
            line = new Line2D.Double(v, dataArea.getMinY(), v, dataArea.getMaxY());
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            line = new Line2D.Double(dataArea.getMinX(), v, dataArea.getMaxX(), v);
        }

        Paint paint = plot.getRangeGridlinePaint();
        Stroke stroke = plot.getRangeGridlineStroke();
        g2.setPaint(paint != null ? paint : Plot.DEFAULT_OUTLINE_PAINT);
        g2.setStroke(stroke != null ? stroke : Plot.DEFAULT_OUTLINE_STROKE);
        g2.draw(line);

    }

    /**
     * Draws a vertical line on the chart to represent a 'range marker'.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param domainAxis  the domain axis.
     * @param marker  the marker line.
     * @param dataArea  the axis data area.
     */
    public void drawDomainMarker(Graphics2D g2,
                                 XYPlot plot,
                                 ValueAxis domainAxis,
                                 Marker marker,
                                 Rectangle2D dataArea) {

        double value = marker.getValue();
        Range range = domainAxis.getRange();
        if (!range.contains(value)) {
            return;
        }

        double x = domainAxis.translateValueToJava2D(marker.getValue(), dataArea,
                                                     plot.getDomainAxisEdge());
        Line2D line = new Line2D.Double(x, dataArea.getMinY(), x, dataArea.getMaxY());
        Paint paint = marker.getOutlinePaint();
        Stroke stroke = marker.getOutlineStroke();
        g2.setPaint(paint != null ? paint : Plot.DEFAULT_OUTLINE_PAINT);
        g2.setStroke(stroke != null ? stroke : Plot.DEFAULT_OUTLINE_STROKE);
        g2.draw(line);

        String label = marker.getLabel();
        Font font = marker.getLabelFont();
        MarkerLabelPosition position = marker.getLabelPosition();
        if (label != null) {
            g2.setFont(font);
            FontRenderContext frc = g2.getFontRenderContext();
            LineMetrics metrics = font.getLineMetrics(label, frc);
            Rectangle2D bounds = font.getStringBounds(label, frc);
            double xx = 0.0;
            double yy = 0.0;
            if (position == MarkerLabelPosition.TOP_LEFT) {
                xx = x - bounds.getWidth() - 2.0;
                yy = dataArea.getMinY() + bounds.getHeight();
            }
            else if (position == MarkerLabelPosition.TOP_RIGHT) {
                xx = x + 2.0;
                yy = dataArea.getMinY() + bounds.getHeight();
            }
            else if (position == MarkerLabelPosition.BOTTOM_LEFT) {
                xx = x - bounds.getWidth() - 2.0;
                yy = dataArea.getMaxY() - metrics.getDescent() - metrics.getLeading();
            }
            else if (position == MarkerLabelPosition.BOTTOM_RIGHT) {
                xx = x + 2.0;
                yy = dataArea.getMaxY() - metrics.getDescent() - metrics.getLeading();
            }
            g2.drawString(label, (int) xx, (int) yy);
        }

    }

    /**
     * Draws a horizontal line across the chart to represent a 'range marker'.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param rangeAxis  the range axis.
     * @param marker  the marker line.
     * @param dataArea  the axis data area.
     */
    public void drawRangeMarker(Graphics2D g2,
                                XYPlot plot,
                                ValueAxis rangeAxis,
                                Marker marker,
                                Rectangle2D dataArea) {

        double value = marker.getValue();
        Range range = rangeAxis.getRange();
        if (!range.contains(value)) {
            return;
        }

        double y = rangeAxis.translateValueToJava2D(marker.getValue(), dataArea,
                                                    plot.getRangeAxisEdge());
        Line2D line = new Line2D.Double(dataArea.getMinX(), y, dataArea.getMaxX(), y);
        Paint paint = marker.getOutlinePaint();
        Stroke stroke = marker.getOutlineStroke();
        g2.setPaint(paint != null ? paint : Plot.DEFAULT_OUTLINE_PAINT);
        g2.setStroke(stroke != null ? stroke : Plot.DEFAULT_OUTLINE_STROKE);
        g2.draw(line);

        String label = marker.getLabel();
        Font font = marker.getLabelFont();
        MarkerLabelPosition position = marker.getLabelPosition();
        if (label != null) {
            g2.setFont(font);
            FontRenderContext frc = g2.getFontRenderContext();
            LineMetrics metrics = font.getLineMetrics(label, frc);
            Rectangle2D bounds = font.getStringBounds(label, frc);
            double xx = 0.0;
            double yy = 0.0;
            if (position == MarkerLabelPosition.TOP_LEFT) {
                xx = dataArea.getMinX();
                yy = y - metrics.getDescent() - metrics.getLeading();
            }
            else if (position == MarkerLabelPosition.TOP_RIGHT) {
                xx = dataArea.getMaxX() - bounds.getWidth() - 2.0;
                yy = y - metrics.getDescent() - metrics.getLeading();
            }
            else if (position == MarkerLabelPosition.BOTTOM_LEFT) {
                xx = dataArea.getMinX();
                yy = y + bounds.getHeight();
            }
            else if (position == MarkerLabelPosition.BOTTOM_RIGHT) {
                xx = dataArea.getMaxX() - bounds.getWidth() - 2.0;
                yy = y + bounds.getHeight();
            }
            g2.drawString(label, (int) xx, (int) yy);
        }

    }

    /**
     * Tests this renderer for equality with another object.
     *
     * @param obj  the object.
     *
     * @return <code>true</code> or <code>false</code>.
     */
    public boolean equals(Object obj) {

        if (obj == null) {
            return false;
        }

        if (obj == this) {
            return true;
        }

        if (obj instanceof AbstractXYItemRenderer) {
            AbstractXYItemRenderer renderer = (AbstractXYItemRenderer) obj;
            boolean result = super.equals(obj);
            if (this.toolTipGenerator != null) {
                result = result && this.toolTipGenerator.equals(renderer.toolTipGenerator);
            }
            else {
                result = result && (renderer.toolTipGenerator == null);
            }
            if (this.urlGenerator != null) {
                result = result && this.urlGenerator.equals(renderer.urlGenerator);
            }
            else {
                result = result && (renderer.urlGenerator == null);
            }
            return result;
        }

        return false;

    }
    
    /**
     * Returns the drawing supplier from the plot.
     * 
     * @return The drawing supplier (possibly <code>null</code>).
     */
    public DrawingSupplier getDrawingSupplier() {
        DrawingSupplier result = null;
        XYPlot p = getPlot();
        if (p != null) {
            result = p.getDrawingSupplier();
        }
        return result;
    }

}