combineddomaincategoryplot.java

jfreechart安装程序和使用说明

        }
        else if (orientation == PlotOrientation.VERTICAL) {
            usableSize = adjustedPlotArea.getHeight() - this.gap * (n - 1);
        }

        for (int i = 0; i < n; i++) {
            CategoryPlot plot = (CategoryPlot) this.subplots.get(i);

            // calculate sub-plot area
            if (orientation == PlotOrientation.HORIZONTAL) {
                double w = usableSize * plot.getWeight() / this.totalWeight;
                this.subplotAreas[i] = new Rectangle2D.Double(
                    x, y, w, adjustedPlotArea.getHeight()
                );
                x = x + w + this.gap;
            }
            else if (orientation == PlotOrientation.VERTICAL) {
                double h = usableSize * plot.getWeight() / this.totalWeight;
                this.subplotAreas[i] = new Rectangle2D.Double(x, y, adjustedPlotArea.getWidth(), h);
                y = y + h + this.gap;
            }

            AxisSpace subSpace = plot.calculateRangeAxisSpace(g2, this.subplotAreas[i], null);
            space.ensureAtLeast(subSpace);

        }

        return space;
    }

    /**
     * Draws the plot on a Java 2D graphics device (such as the screen or a printer).
     * Will perform all the placement calculations for each sub-plots and then tell these to draw
     * themselves.
     *
     * @param g2  the graphics device.
     * @param plotArea  the area within which the plot (including axis labels) should be drawn.
     * @param parentState  the state from the parent plot, if there is one.
     * @param info  collects information about the drawing (<code>null</code> permitted).
     */
    public void draw(Graphics2D g2, 
                     Rectangle2D plotArea, 
                     PlotState parentState,
                     PlotRenderingInfo info) {
        
        // set up info collection...
        if (info != null) {
            info.setPlotArea(plotArea);
        }

        // adjust the drawing area for plot insets (if any)...
        Insets insets = getInsets();
        if (insets != null) {
            plotArea.setRect(
                plotArea.getX() + insets.left,
                plotArea.getY() + insets.top,
                plotArea.getWidth() - insets.left - insets.right,
                plotArea.getHeight() - insets.top - insets.bottom
            );
        }

        // calculate the data area...
        setFixedRangeAxisSpaceForSubplots(null);
        AxisSpace space = calculateAxisSpace(g2, plotArea);
        Rectangle2D dataArea = space.shrink(plotArea, null);

        // set the width and height of non-shared axis of all sub-plots
        setFixedRangeAxisSpaceForSubplots(space);

        // draw the shared axis
        CategoryAxis axis = getDomainAxis();
        RectangleEdge domainEdge = getDomainAxisEdge();
        double cursor = RectangleEdge.coordinate(dataArea, domainEdge);
        AxisState axisState = axis.draw(g2, cursor, plotArea, dataArea, domainEdge, info);
        if (parentState == null) {
            parentState = new PlotState();
        }
        parentState.getSharedAxisStates().put(axis, axisState);
        
        // draw all the subplots
        for (int i = 0; i < this.subplots.size(); i++) {
            CategoryPlot plot = (CategoryPlot) this.subplots.get(i);
            PlotRenderingInfo subplotInfo = null;
            if (info != null) {
                subplotInfo = new PlotRenderingInfo(info.getOwner());
                info.addSubplotInfo(subplotInfo);
            }
            plot.draw(g2, this.subplotAreas[i], parentState, subplotInfo);
        }

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

    }

    /**
     * Sets the size (width or height, depending on the orientation of the plot) for the range
     * axis of each subplot.
     *
     * @param space  the space (<code>null</code> permitted).
     */
    protected void setFixedRangeAxisSpaceForSubplots(AxisSpace space) {

        Iterator iterator = this.subplots.iterator();
        while (iterator.hasNext()) {
            CategoryPlot plot = (CategoryPlot) iterator.next();
            plot.setFixedRangeAxisSpace(space);
        }

    }

    /**
     * Sets the orientation of the plot (and all subplots).
     * 
     * @param orientation  the orientation (<code>null</code> not permitted).
     */
    public void setOrientation(PlotOrientation orientation) {

        super.setOrientation(orientation);

        Iterator iterator = this.subplots.iterator();
        while (iterator.hasNext()) {
            CategoryPlot plot = (CategoryPlot) iterator.next();
            plot.setOrientation(orientation);
        }

    }
    /**
     * Returns a collection of legend items for the plot.
     *
     * @return The legend items.
     */
    public LegendItemCollection getLegendItems() {

        LegendItemCollection result = new LegendItemCollection();

        if (this.subplots != null) {
            Iterator iterator = this.subplots.iterator();
            while (iterator.hasNext()) {
                CategoryPlot plot = (CategoryPlot) iterator.next();
                LegendItemCollection more = plot.getLegendItems();
                result.addAll(more);
            }
        }

        return result;

    }
    
    /**
     * Returns an unmodifiable list of the categories contained in all the subplots.
     * 
     * @return The list.
     */
    public List getCategories() {
        
        List result = new java.util.ArrayList();

        if (this.subplots != null) {
            Iterator iterator = this.subplots.iterator();
            while (iterator.hasNext()) {
                CategoryPlot plot = (CategoryPlot) iterator.next();
                List more = plot.getCategories();
                Iterator moreIterator = more.iterator();
                while (moreIterator.hasNext()) {
                    Comparable category = (Comparable) moreIterator.next();
                    if (!result.contains(category)) {
                        result.add(category);
                    }
                }
            }
        }

        return Collections.unmodifiableList(result);
    }
    
    /**
     * Handles a 'click' on the plot.
     *
     * @param x  x-coordinate of the click.
     * @param y  y-coordinate of the click.
     * @param info  information about the plot's dimensions.
     *
     */
    public void handleClick(int x, int y, PlotRenderingInfo info) {

        Rectangle2D dataArea = info.getDataArea();
        if (dataArea.contains(x, y)) {
            for (int i = 0; i < this.subplots.size(); i++) {
                CategoryPlot subplot = (CategoryPlot) this.subplots.get(i);
                PlotRenderingInfo subplotInfo = info.getSubplotInfo(i);
                subplot.handleClick(x, y, subplotInfo);
            }
        }

    }
    
    /**
     * Receives a {@link PlotChangeEvent} and responds by notifying all listeners.
     * 
     * @param event  the event.
     */
    public void plotChanged(PlotChangeEvent event) {
        notifyListeners(event);
    }

    /** 
     * Tests the plot for equality with an arbitrary object.
     * 
     * @param object  the object to test against.
     * 
     * @return <code>true</code> or <code>false</code>.
     */
    public boolean equals(Object object) {

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

        if (object instanceof CombinedDomainCategoryPlot) {
            CombinedDomainCategoryPlot plot = (CombinedDomainCategoryPlot) object;
            if (super.equals(object)) {
                boolean b0 = ObjectUtils.equal(this.subplots, plot.subplots);
                boolean b1 = (this.totalWeight == plot.totalWeight);
                boolean b2 = (this.gap == plot.gap);

                return b0 && b1 && b2;
                          
            } 
        }
        
        return false;
        
    }

    /**
     * Returns a clone of the plot.
     * 
     * @return A clone.
     * 
     * @throws CloneNotSupportedException  this class will not throw this exception, but subclasses
     *         (if any) might.
     */
    public Object clone() throws CloneNotSupportedException {
        
        CombinedDomainCategoryPlot result = (CombinedDomainCategoryPlot) super.clone(); 
        result.subplots = ObjectUtils.clone(this.subplots);
        for (Iterator it = result.subplots.iterator(); it.hasNext();) {
            Plot child = (Plot) it.next();
            child.setParent(result);
        }
        return result;
        
    }
    
}