Example usage for org.jfree.chart.plot CrosshairState getCrosshairX

Introduction

In this page you can find the example usage for org.jfree.chart.plot CrosshairState getCrosshairX.

Prototype

public double getCrosshairX() 

Source Link

Document

Get the x-value for the crosshair point.

Usage

From source file:ucar.unidata.idv.control.chart.MyXYPlot.java

/**
 * Draws the plot within the specified area on a graphics device.
 *
 * @param g2  the graphics device.//ww w.  ja  v a 2  s.  c  om
 * @param area  the plot area (in Java2D space).
 * @param anchor  an anchor point in Java2D space (<code>null</code>
 *                permitted).
 * @param parentState  the state from the parent plot, if there is one
 *                     (<code>null</code> permitted).
 * @param info  collects chart drawing information (<code>null</code>
 *              permitted).
 */
public void draw(Graphics2D g2, Rectangle2D area, Point2D anchor, PlotState parentState,
        PlotRenderingInfo info) {

    // if the plot area is too small, just return...
    boolean b1 = (area.getWidth() <= MINIMUM_WIDTH_TO_DRAW);
    boolean b2 = (area.getHeight() <= MINIMUM_HEIGHT_TO_DRAW);
    if (b1 || b2) {
        return;
    }

    // record the plot area...
    if (info != null) {
        info.setPlotArea(area);
    }

    // adjust the drawing area for the plot insets (if any)...
    RectangleInsets insets = getInsets();
    insets.trim(area);

    AxisSpace space = calculateAxisSpace(g2, area);
    Rectangle2D dataArea = space.shrink(area, null);
    this.axisOffset.trim(dataArea);

    if (info != null) {
        info.setDataArea(dataArea);
    }

    // draw the plot background and axes...
    drawBackground(g2, dataArea);
    Map axisStateMap = drawAxes(g2, area, dataArea, info);

    if ((anchor != null) && !dataArea.contains(anchor)) {
        anchor = null;
    }
    CrosshairState crosshairState = new CrosshairState();
    crosshairState.setCrosshairDistance(Double.POSITIVE_INFINITY);
    crosshairState.setAnchor(anchor);
    crosshairState.setCrosshairX(getDomainCrosshairValue());
    crosshairState.setCrosshairY(getRangeCrosshairValue());
    Shape originalClip = g2.getClip();
    Composite originalComposite = g2.getComposite();

    g2.clip(dataArea);
    g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getForegroundAlpha()));

    AxisState domainAxisState = (AxisState) axisStateMap.get(getDomainAxis());
    if (domainAxisState == null) {
        if (parentState != null) {
            domainAxisState = (AxisState) parentState.getSharedAxisStates().get(getDomainAxis());
        }
    }
    if (domainAxisState != null) {
        drawDomainTickBands(g2, dataArea, domainAxisState.getTicks());
        drawDomainGridlines(g2, dataArea, domainAxisState.getTicks());
    }

    AxisState rangeAxisState = (AxisState) axisStateMap.get(getRangeAxis());
    if (rangeAxisState == null) {
        if (parentState != null) {
            rangeAxisState = (AxisState) parentState.getSharedAxisStates().get(getRangeAxis());
        }
    }
    if (rangeAxisState != null) {
        drawRangeTickBands(g2, dataArea, rangeAxisState.getTicks());
        drawRangeGridlines(g2, dataArea, rangeAxisState.getTicks());
        drawZeroRangeBaseline(g2, dataArea);
    }

    // draw the markers that are associated with a specific renderer...
    for (int i = 0; i < this.renderers.size(); i++) {
        drawDomainMarkers(g2, dataArea, i, Layer.BACKGROUND);
    }
    for (int i = 0; i < this.renderers.size(); i++) {
        drawRangeMarkers(g2, dataArea, i, Layer.BACKGROUND);
    }

    // now draw annotations and render data items...
    boolean foundData = false;
    DatasetRenderingOrder order = getDatasetRenderingOrder();
    if (order == DatasetRenderingOrder.FORWARD) {

        // draw background annotations
        int rendererCount = this.renderers.size();
        for (int i = 0; i < rendererCount; i++) {
            XYItemRenderer r = getRenderer(i);
            if (r != null) {
                ValueAxis domainAxis = getDomainAxisForDataset(i);
                ValueAxis rangeAxis = getRangeAxisForDataset(i);
                r.drawAnnotations(g2, dataArea, domainAxis, rangeAxis, Layer.BACKGROUND, info);
            }
        }

        // render data items...
        for (int i = 0; i < getDatasetCount(); i++) {
            foundData = render(g2, dataArea, i, info, crosshairState) || foundData;
        }

        // draw foreground annotations
        for (int i = 0; i < rendererCount; i++) {
            XYItemRenderer r = getRenderer(i);
            if (r != null) {
                ValueAxis domainAxis = getDomainAxisForDataset(i);
                ValueAxis rangeAxis = getRangeAxisForDataset(i);
                r.drawAnnotations(g2, dataArea, domainAxis, rangeAxis, Layer.FOREGROUND, info);
            }
        }

    } else if (order == DatasetRenderingOrder.REVERSE) {

        // draw background annotations
        int rendererCount = this.renderers.size();
        for (int i = rendererCount - 1; i >= 0; i--) {
            XYItemRenderer r = getRenderer(i);
            if (r != null) {
                ValueAxis domainAxis = getDomainAxisForDataset(i);
                ValueAxis rangeAxis = getRangeAxisForDataset(i);
                r.drawAnnotations(g2, dataArea, domainAxis, rangeAxis, Layer.BACKGROUND, info);
            }
        }

        ucar.unidata.util.Trace.call1("renderData");
        for (int i = getDatasetCount() - 1; i >= 0; i--) {
            foundData = render(g2, dataArea, i, info, crosshairState) || foundData;
        }
        ucar.unidata.util.Trace.call2("renderData");

        // draw foreground annotations
        for (int i = rendererCount - 1; i >= 0; i--) {
            XYItemRenderer r = getRenderer(i);
            if (r != null) {
                ValueAxis domainAxis = getDomainAxisForDataset(i);
                ValueAxis rangeAxis = getRangeAxisForDataset(i);
                r.drawAnnotations(g2, dataArea, domainAxis, rangeAxis, Layer.FOREGROUND, info);
            }
        }

    }

    PlotOrientation orient = getOrientation();

    // draw domain crosshair if required...
    if (!this.domainCrosshairLockedOnData && (anchor != null)) {
        double xx = getDomainAxis().java2DToValue(anchor.getX(), dataArea, getDomainAxisEdge());
        crosshairState.setCrosshairX(xx);
    }
    setDomainCrosshairValue(crosshairState.getCrosshairX(), false);
    if (isDomainCrosshairVisible()) {
        double x = getDomainCrosshairValue();
        Paint paint = getDomainCrosshairPaint();
        Stroke stroke = getDomainCrosshairStroke();
        if (orient == PlotOrientation.HORIZONTAL) {
            drawHorizontalLine(g2, dataArea, x, stroke, paint);
        } else if (orient == PlotOrientation.VERTICAL) {
            drawVerticalLine(g2, dataArea, x, stroke, paint);
        }
    }

    // draw range crosshair if required...
    if (!this.rangeCrosshairLockedOnData && (anchor != null)) {
        double yy = getRangeAxis().java2DToValue(anchor.getY(), dataArea, getRangeAxisEdge());
        crosshairState.setCrosshairX(yy);
    }
    setRangeCrosshairValue(crosshairState.getCrosshairY(), false);
    if (isRangeCrosshairVisible() && getRangeAxis().getRange().contains(getRangeCrosshairValue())) {
        double y = getRangeCrosshairValue();
        Paint paint = getRangeCrosshairPaint();
        Stroke stroke = getRangeCrosshairStroke();
        if (orient == PlotOrientation.HORIZONTAL) {
            drawVerticalLine(g2, dataArea, y, stroke, paint);
        } else if (orient == PlotOrientation.VERTICAL) {
            drawHorizontalLine(g2, dataArea, y, stroke, paint);
        }
    }

    if (!foundData) {
        drawNoDataMessage(g2, dataArea);
    }

    for (int i = 0; i < this.renderers.size(); i++) {
        drawDomainMarkers(g2, dataArea, i, Layer.FOREGROUND);
    }
    for (int i = 0; i < this.renderers.size(); i++) {
        drawRangeMarkers(g2, dataArea, i, Layer.FOREGROUND);
    }

    drawAnnotations(g2, dataArea, info);
    g2.setClip(originalClip);
    g2.setComposite(originalComposite);

    drawOutline(g2, dataArea);

}

---