Java PlotRenderingInfo類代碼示例

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Returns the data area (the area inside the axes) for the plot or subplot, with the current
 * scaling applied.
 * 
 * @param x
 *            the x-coordinate (for subplot selection).
 * @param y
 *            the y-coordinate (for subplot selection).
 * 
 * @return The scaled data area.
 */

@Override
public Rectangle2D getScreenDataArea(int x, int y) {
	PlotRenderingInfo plotInfo = this.info.getPlotInfo();
	Rectangle2D result;
	if (plotInfo.getSubplotCount() == 0) {
		result = getScreenDataArea();
	} else {
		// get the origin of the zoom selection in the Java2D space used for
		// drawing the chart (that is, before any scaling to fit the panel)
		Point2D selectOrigin = translateScreenToJava2D(new Point(x, y));
		int subplotIndex = plotInfo.getSubplotIndex(selectOrigin);
		if (subplotIndex == -1) {
			return null;
		}
		result = scale(plotInfo.getSubplotInfo(subplotIndex).getDataArea());
	}
	return result;
}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Draws the axis on a Java 2D graphics device (such as the screen or a 
 * printer).
 *
 * @param g2  the graphics device (<code>null</code> not permitted).
 * @param cursor  the cursor location (determines where to draw the axis).
 * @param plotArea  the area within which the axes and plot should be drawn.
 * @param dataArea  the area within which the data should be drawn.
 * @param edge  the axis location (<code>null</code> not permitted).
 * @param plotState  collects information about the plot 
 *                   (<code>null</code> permitted).
 * 
 * @return The axis state (never <code>null</code>).
 */
public AxisState draw(Graphics2D g2, 
                      double cursor,
                      Rectangle2D plotArea, 
                      Rectangle2D dataArea,
                      RectangleEdge edge,
                      PlotRenderingInfo plotState) {
    
    AxisState axisState = new AxisState(cursor);
    if (isAxisLineVisible()) {
        drawAxisLine(g2, cursor, dataArea, edge);
    }
    drawTickMarks(g2, axisState, dataArea, edge);
    for (int band = 0; band < this.labelInfo.length; band++) {
        axisState = drawTickLabels(band, g2, axisState, dataArea, edge);
    }
    
    // draw the axis label (note that 'state' is passed in *and* 
    // returned)...
    axisState = drawLabel(getLabel(), g2, plotArea, dataArea, edge, 
            axisState);
    return axisState;
    
}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
@Override
public List<Pair<Integer, Range>> calculateRangeAxesZoom(double lowerPercent, double upperPercent,
		PlotRenderingInfo info, Point2D source, boolean zoomIn) {

	List<Pair<Integer, Range>> newRanges = new LinkedList<Pair<Integer, Range>>();

	for (int i = 0; i < getRangeAxisCount(); i++) {
		ValueAxis rangeAxis = getRangeAxis(i);
		if (rangeAxis != null) {
			if (rangeAxis instanceof LinkAndBrushAxis) {
				Range calculateZoomRange = ((LinkAndBrushAxis) rangeAxis).calculateZoomRange(lowerPercent, upperPercent,
						zoomIn);
				newRanges.add(new Pair<Integer, Range>(i, calculateZoomRange));
			} else if (zoomIn) {
				rangeAxis.zoomRange(lowerPercent, upperPercent);
			}
		}
	}

	return newRanges;
}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Draws the axis on a Java 2D graphics device (such as the screen or a 
 * printer).
 *
 * @param g2  the graphics device (<code>null</code> not permitted).
 * @param cursor  the cursor location.
 * @param plotArea  the area within which the axis should be drawn 
 *                  (<code>null</code> not permitted).
 * @param dataArea  the area within which the plot is being drawn 
 *                  (<code>null</code> not permitted).
 * @param edge  the location of the axis (<code>null</code> not permitted).
 * @param plotState  collects information about the plot 
 *                   (<code>null</code> permitted).
 * 
 * @return The axis state (never <code>null</code>).
 */
public AxisState draw(Graphics2D g2, 
                      double cursor, 
                      Rectangle2D plotArea, 
                      Rectangle2D dataArea,
                      RectangleEdge edge,
                      PlotRenderingInfo plotState) {
    
    // if the axis is not visible, don't draw it...
    if (!isVisible()) {
        return new AxisState(cursor);
    }
    
    if (isAxisLineVisible()) {
        drawAxisLine(g2, cursor, dataArea, edge);
    }

    // draw the category labels and axis label
    AxisState state = new AxisState(cursor);
    state = drawCategoryLabels(g2, plotArea, dataArea, edge, state, 
            plotState);
    state = drawLabel(getLabel(), g2, plotArea, dataArea, edge, state);

    return state;

}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Handle the case where a plot implements the {@link Zoomable} interface.
 *
 * @param zoomable  the zoomable plot.
 * @param e  the mouse wheel event.
 */
private void handleZoomable(ChartCanvas canvas, Zoomable zoomable, 
        ScrollEvent e) {
    // don't zoom unless the mouse pointer is in the plot's data area
    ChartRenderingInfo info = canvas.getRenderingInfo();
    PlotRenderingInfo pinfo = info.getPlotInfo();
    Point2D p = new Point2D.Double(e.getX(), e.getY());
    if (pinfo.getDataArea().contains(p)) {
        Plot plot = (Plot) zoomable;
        // do not notify while zooming each axis
        boolean notifyState = plot.isNotify();
        plot.setNotify(false);
        int clicks = (int) e.getDeltaY();
        double zf = 1.0 + this.zoomFactor;
        if (clicks < 0) {
            zf = 1.0 / zf;
        }
        if (canvas.isDomainZoomable()) {
            zoomable.zoomDomainAxes(zf, pinfo, p, true);
        }
        if (canvas.isRangeZoomable()) {
            zoomable.zoomRangeAxes(zf, pinfo, p, true);
        }
        plot.setNotify(notifyState);  // this generates the change event too
    } 
}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Initialises the renderer and returns a state object that will be passed to subsequent calls 
 * to the drawItem method.  This method gets called once at the start of the process of 
 * drawing a chart.
 *
 * @param g2  the graphics device.
 * @param dataArea  the area in which the data is to be plotted.
 * @param plot  the plot.
 * @param rendererIndex  the renderer index.
 * @param info  collects chart rendering information for return to caller.
 * 
 * @return The renderer state.
 */
public CategoryItemRendererState initialise(Graphics2D g2,
                                            Rectangle2D dataArea,
                                            CategoryPlot plot,
                                            int rendererIndex,
                                            PlotRenderingInfo info) {

    CategoryItemRendererState state = super.initialise(g2, dataArea, plot, rendererIndex, info);

    // get the clipping values...
    ValueAxis rangeAxis = getRangeAxis(plot, rendererIndex);
    this.lowerClip = rangeAxis.getRange().getLowerBound();
    this.upperClip = rangeAxis.getRange().getUpperBound();

    // calculate the bar width
    calculateBarWidth(plot, dataArea, rendererIndex, state);

    return state;
    
}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Draws the axis on a Java 2D graphics device (such as the screen or a printer).
 *
 * @param g2  the graphics device (<code>null</code> not permitted).
 * @param cursor  the cursor location.
 * @param plotArea  the area within which the plot and axes should be drawn (<code>null</code> 
 *                  not permitted).
 * @param dataArea  the area within which the data should be drawn (<code>null</code> not 
 *                  permitted).
 * @param edge  the axis location (<code>null</code> not permitted).
 * @param plotState  collects information about the plot (<code>null</code> permitted).
 * 
 * @return the axis state (never <code>null</code>).
 */
public AxisState draw(Graphics2D g2, 
                      double cursor,
                      Rectangle2D plotArea, 
                      Rectangle2D dataArea, 
                      RectangleEdge edge,
                      PlotRenderingInfo plotState) {

    AxisState info = new AxisState(cursor);
    if (isVisible()) {
        info = super.draw(g2, cursor, plotArea, dataArea, edge, plotState);
    }
    if (this.symbolicGridLinesVisible) {
        drawSymbolicGridLines(g2, plotArea, dataArea, edge, info.getTicks());
    }
    return info;

}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Returns the data area (the area inside the axes) for the plot or subplot,
 * with the current scaling applied.
 *
 * @param x  the x-coordinate (for subplot selection).
 * @param y  the y-coordinate (for subplot selection).
 * 
 * @return The scaled data area.
 */
public Rectangle getScreenDataArea(int x, int y) {
    PlotRenderingInfo plotInfo = this.info.getPlotInfo();
    Rectangle result;
    if (plotInfo.getSubplotCount() == 0)
        result = getScreenDataArea();
    else {
        // get the origin of the zoom selection in the Java2D space used for
        // drawing the chart (that is, before any scaling to fit the panel)
        Point2D selectOrigin = translateScreenToJava2D(new Point(x, y));
        int subplotIndex = plotInfo.getSubplotIndex(selectOrigin);
        if (subplotIndex == -1) {
            return null;
        }
        result = scale(plotInfo.getSubplotInfo(subplotIndex).getDataArea());
    }
    return result;
}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Returns the data area (the area inside the axes) for the plot or subplot,
 * with the current scaling applied.
 *
 * @param x  the x-coordinate (for subplot selection).
 * @param y  the y-coordinate (for subplot selection).
 * 
 * @return The scaled data area.
 */
public Rectangle2D getScreenDataArea(int x, int y) {
    PlotRenderingInfo plotInfo = this.info.getPlotInfo();
    Rectangle2D result;
    if (plotInfo.getSubplotCount() == 0) {
        result = getScreenDataArea();
    } 
    else {
        // get the origin of the zoom selection in the Java2D space used for
        // drawing the chart (that is, before any scaling to fit the panel)
        Point2D selectOrigin = translateScreenToJava2D(new Point(x, y));
        int subplotIndex = plotInfo.getSubplotIndex(selectOrigin);
        if (subplotIndex == -1) {
            return null;
        }
        result = scale(plotInfo.getSubplotInfo(subplotIndex).getDataArea());
    }
    return result;
}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Draws all the annotations for the specified layer.
 *
 * @param g2  the graphics device.
 * @param dataArea  the data area.
 * @param domainAxis  the domain axis.
 * @param rangeAxis  the range axis.
 * @param layer  the layer.
 * @param info  the plot rendering info.
 */
public void drawAnnotations(Graphics2D g2,
                            Rectangle2D dataArea,
                            ValueAxis domainAxis,
                            ValueAxis rangeAxis,
                            Layer layer,
                            PlotRenderingInfo info) {

    Iterator iterator = null;
    if (layer.equals(Layer.FOREGROUND)) {
        iterator = this.foregroundAnnotations.iterator();
    }
    else if (layer.equals(Layer.BACKGROUND)) {
        iterator = this.backgroundAnnotations.iterator();
    }
    else {
        // should not get here
        throw new RuntimeException("Unknown layer.");
    }
    while (iterator.hasNext()) {
        XYAnnotation annotation = (XYAnnotation) iterator.next();
        annotation.draw(g2, this.plot, dataArea, domainAxis, rangeAxis,
                0, info);
    }

}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Draws the visual representation of a single data item.
 *
 * @param g2  the graphics device.
 * @param state  the renderer state.
 * @param dataArea  the area within which the plot is being drawn.
 * @param info  collects info about the drawing.
 * @param plot  the plot (can be used to obtain standard color 
 *              information etc).
 * @param domainAxis  the domain axis.
 * @param rangeAxis  the range axis.
 * @param dataset  the dataset.
 * @param series  the series index (zero-based).
 * @param item  the item index (zero-based).
 * @param crosshairState  crosshair information for the plot 
 *                        (<code>null</code> permitted).
 * @param pass  the pass index.
 */
public void drawItem(Graphics2D g2, 
                     XYItemRendererState state,
                     Rectangle2D dataArea,
                     PlotRenderingInfo info,
                     XYPlot plot, 
                     ValueAxis domainAxis, 
                     ValueAxis rangeAxis,
                     XYDataset dataset, 
                     int series, 
                     int item,
                     CrosshairState crosshairState,
                     int pass) {

    PlotOrientation orientation = plot.getOrientation();

    if (orientation == PlotOrientation.HORIZONTAL) {
        drawHorizontalItem(g2, dataArea, info, plot, domainAxis, rangeAxis,
                dataset, series, item, crosshairState, pass);
    }
    else if (orientation == PlotOrientation.VERTICAL) {
        drawVerticalItem(g2, dataArea, info, plot, domainAxis, rangeAxis,
                dataset, series, item, crosshairState, pass);
    }

}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Initialises the renderer and returns a state object that will be used
 * for the remainder of the drawing process for a single chart.  The state
 * object allows for the fact that the renderer may be used simultaneously
 * by multiple threads (each thread will work with a separate state object).
 *
 * @param g2  the graphics device.
 * @param dataArea  the data area.
 * @param plot  the plot.
 * @param rendererIndex  the renderer index.
 * @param info  an object for returning information about the structure of
 *              the plot (<code>null</code> permitted).
 *
 * @return The renderer state.
 */
public CategoryItemRendererState initialise(Graphics2D g2,
                                            Rectangle2D dataArea,
                                            CategoryPlot plot,
                                            int rendererIndex,
                                            PlotRenderingInfo info) {

    setPlot(plot);
    CategoryDataset data = plot.getDataset(rendererIndex);
    if (data != null) {
        this.rowCount = data.getRowCount();
        this.columnCount = data.getColumnCount();
    }
    else {
        this.rowCount = 0;
        this.columnCount = 0;
    }
    return createState(info);

}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Initialises the renderer and returns a state object that will be passed 
 * to subsequent calls to the drawItem method.  This method gets called 
 * once at the start of the process of drawing a chart.
 *
 * @param g2  the graphics device.
 * @param dataArea  the area in which the data is to be plotted.
 * @param plot  the plot.
 * @param rendererIndex  the renderer index.
 * @param info  collects chart rendering information for return to caller.
 * 
 * @return The renderer state.
 */
public CategoryItemRendererState initialise(Graphics2D g2,
                                            Rectangle2D dataArea,
                                            CategoryPlot plot,
                                            int rendererIndex,
                                            PlotRenderingInfo info) {

    CategoryItemRendererState state = super.initialise(g2, dataArea, plot, 
            rendererIndex, info);

    // get the clipping values...
    ValueAxis rangeAxis = plot.getRangeAxisForDataset(rendererIndex);
    this.lowerClip = rangeAxis.getRange().getLowerBound();
    this.upperClip = rangeAxis.getRange().getUpperBound();

    // calculate the bar width
    calculateBarWidth(plot, dataArea, rendererIndex, state);

    return state;
    
}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Draws the annotation.
 *
 * @param g2  the graphics device.
 * @param plot  the plot.
 * @param dataArea  the data area.
 * @param domainAxis  the domain axis.
 * @param rangeAxis  the range axis.
 * @param rendererIndex  the renderer index.
 * @param info  if supplied, this info object will be populated with
 *              entity information.
 */
public void draw(Graphics2D g2, XYPlot plot, Rectangle2D dataArea,
                 ValueAxis domainAxis, ValueAxis rangeAxis, 
                 int rendererIndex,
                 PlotRenderingInfo info) {

    PlotOrientation orientation = plot.getOrientation();
    RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(
            plot.getDomainAxisLocation(), orientation);
    RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(
            plot.getRangeAxisLocation(), orientation);
    float j2DX = (float) domainAxis.valueToJava2D(this.x, dataArea, 
            domainEdge);
    float j2DY = (float) rangeAxis.valueToJava2D(this.y, dataArea, 
            rangeEdge);
    Rectangle2D area = new Rectangle2D.Double(j2DX - this.width / 2.0, 
            j2DY - this.height / 2.0, this.width, this.height);
    this.drawable.draw(g2, area);
    String toolTip = getToolTipText();
    String url = getURL();
    if (toolTip != null || url != null) {
        addEntity(info, area, rendererIndex, toolTip, url);
    }
    
}
 

import org.jfree.chart.plot.PlotRenderingInfo; //導入依賴的package包/類
/**
 * Returns the data area (the area inside the axes) for the plot or subplot.
 *
 * @param point  the selection point (for subplot selection).
 *
 * @return The data area.
 */
public Rectangle2D findDataArea(Point2D point) {
    PlotRenderingInfo plotInfo = this.info.getPlotInfo();
    Rectangle2D result;
    if (plotInfo.getSubplotCount() == 0) {
        result = plotInfo.getDataArea();
    } else {
        int subplotIndex = plotInfo.getSubplotIndex(point);
        if (subplotIndex == -1) {
            return null;
        }
        result = plotInfo.getSubplotInfo(subplotIndex).getDataArea();
    }
    return result;
}