categoryplot.java

jfreechart-1.0.12.zip 可以用来作图

     * @param index  the axis index.
     *
     * @return The edge.
     */
    public RectangleEdge getRangeAxisEdge(int index) {
        AxisLocation location = getRangeAxisLocation(index);
        RectangleEdge result = Plot.resolveRangeAxisLocation(location,
                this.orientation);
        if (result == null) {
            result = RectangleEdge.opposite(getRangeAxisEdge(0));
        }
        return result;
    }

    /**
     * Returns the number of range axes.
     *
     * @return The axis count.
     */
    public int getRangeAxisCount() {
        return this.rangeAxes.size();
    }

    /**
     * Clears the range axes from the plot and sends a {@link PlotChangeEvent}
     * to all registered listeners.
     */
    public void clearRangeAxes() {
        for (int i = 0; i < this.rangeAxes.size(); i++) {
            ValueAxis axis = (ValueAxis) this.rangeAxes.get(i);
            if (axis != null) {
                axis.removeChangeListener(this);
            }
        }
        this.rangeAxes.clear();
        fireChangeEvent();
    }

    /**
     * Configures the range axes.
     */
    public void configureRangeAxes() {
        for (int i = 0; i < this.rangeAxes.size(); i++) {
            ValueAxis axis = (ValueAxis) this.rangeAxes.get(i);
            if (axis != null) {
                axis.configure();
            }
        }
    }

    /**
     * Returns the primary dataset for the plot.
     *
     * @return The primary dataset (possibly <code>null</code>).
     *
     * @see #setDataset(CategoryDataset)
     */
    public CategoryDataset getDataset() {
        return getDataset(0);
    }

    /**
     * Returns the dataset at the given index.
     *
     * @param index  the dataset index.
     *
     * @return The dataset (possibly <code>null</code>).
     *
     * @see #setDataset(int, CategoryDataset)
     */
    public CategoryDataset getDataset(int index) {
        CategoryDataset result = null;
        if (this.datasets.size() > index) {
            result = (CategoryDataset) this.datasets.get(index);
        }
        return result;
    }

    /**
     * Sets the dataset for the plot, replacing the existing dataset, if there
     * is one.  This method also calls the
     * {@link #datasetChanged(DatasetChangeEvent)} method, which adjusts the
     * axis ranges if necessary and sends a {@link PlotChangeEvent} to all
     * registered listeners.
     *
     * @param dataset  the dataset (<code>null</code> permitted).
     *
     * @see #getDataset()
     */
    public void setDataset(CategoryDataset dataset) {
        setDataset(0, dataset);
    }

    /**
     * Sets a dataset for the plot.
     *
     * @param index  the dataset index.
     * @param dataset  the dataset (<code>null</code> permitted).
     *
     * @see #getDataset(int)
     */
    public void setDataset(int index, CategoryDataset dataset) {

        CategoryDataset existing = (CategoryDataset) this.datasets.get(index);
        if (existing != null) {
            existing.removeChangeListener(this);
        }
        this.datasets.set(index, dataset);
        if (dataset != null) {
            dataset.addChangeListener(this);
        }

        // send a dataset change event to self...
        DatasetChangeEvent event = new DatasetChangeEvent(this, dataset);
        datasetChanged(event);

    }

    /**
     * Returns the number of datasets.
     *
     * @return The number of datasets.
     *
     * @since 1.0.2
     */
    public int getDatasetCount() {
        return this.datasets.size();
    }

    /**
     * Returns the index of the specified dataset, or <code>-1</code> if the
     * dataset does not belong to the plot.
     *
     * @param dataset  the dataset (<code>null</code> not permitted).
     *
     * @return The index.
     *
     * @since 1.0.11
     */
    public int indexOf(CategoryDataset dataset) {
        int result = -1;
        for (int i = 0; i < this.datasets.size(); i++) {
            if (dataset == this.datasets.get(i)) {
                result = i;
                break;
            }
        }
        return result;
    }

    /**
     * Maps a dataset to a particular domain axis.
     *
     * @param index  the dataset index (zero-based).
     * @param axisIndex  the axis index (zero-based).
     *
     * @see #getDomainAxisForDataset(int)
     */
    public void mapDatasetToDomainAxis(int index, int axisIndex) {
        List axisIndices = new java.util.ArrayList(1);
        axisIndices.add(new Integer(axisIndex));
        mapDatasetToDomainAxes(index, axisIndices);
    }

    /**
     * Maps the specified dataset to the axes in the list.  Note that the
     * conversion of data values into Java2D space is always performed using
     * the first axis in the list.
     *
     * @param index  the dataset index (zero-based).
     * @param axisIndices  the axis indices (<code>null</code> permitted).
     *
     * @since 1.0.12
     */
    public void mapDatasetToDomainAxes(int index, List axisIndices) {
        if (index < 0) {
            throw new IllegalArgumentException("Requires 'index' >= 0.");
        }
        checkAxisIndices(axisIndices);
        Integer key = new Integer(index);
        this.datasetToDomainAxesMap.put(key, new ArrayList(axisIndices));
        // fake a dataset change event to update axes...
        datasetChanged(new DatasetChangeEvent(this, getDataset(index)));
    }

    /**
     * This method is used to perform argument checking on the list of
     * axis indices passed to mapDatasetToDomainAxes() and
     * mapDatasetToRangeAxes().
     *
     * @param indices  the list of indices (<code>null</code> permitted).
     */
    private void checkAxisIndices(List indices) {
        // axisIndices can be:
        // 1.  null;
        // 2.  non-empty, containing only Integer objects that are unique.
        if (indices == null) {
            return;  // OK
        }
        int count = indices.size();
        if (count == 0) {
            throw new IllegalArgumentException("Empty list not permitted.");
        }
        HashSet set = new HashSet();
        for (int i = 0; i < count; i++) {
            Object item = indices.get(i);
            if (!(item instanceof Integer)) {
                throw new IllegalArgumentException(
                        "Indices must be Integer instances.");
            }
            if (set.contains(item)) {
                throw new IllegalArgumentException("Indices must be unique.");
            }
            set.add(item);
        }
    }

    /**
     * Returns the domain axis for a dataset.  You can change the axis for a
     * dataset using the {@link #mapDatasetToDomainAxis(int, int)} method.
     *
     * @param index  the dataset index.
     *
     * @return The domain axis.
     *
     * @see #mapDatasetToDomainAxis(int, int)
     */
    public CategoryAxis getDomainAxisForDataset(int index) {
        if (index < 0) {
            throw new IllegalArgumentException("Negative 'index'.");
        }
        CategoryAxis axis = null;
        List axisIndices = (List) this.datasetToDomainAxesMap.get(
                new Integer(index));
        if (axisIndices != null) {
            // the first axis in the list is used for data <--> Java2D
            Integer axisIndex = (Integer) axisIndices.get(0);
            axis = getDomainAxis(axisIndex.intValue());
        }
        else {
            axis = getDomainAxis(0);
        }
        return axis;
    }

    /**
     * Maps a dataset to a particular range axis.
     *
     * @param index  the dataset index (zero-based).
     * @param axisIndex  the axis index (zero-based).
     *
     * @see #getRangeAxisForDataset(int)
     */
    public void mapDatasetToRangeAxis(int index, int axisIndex) {
        List axisIndices = new java.util.ArrayList(1);
        axisIndices.add(new Integer(axisIndex));
        mapDatasetToRangeAxes(index, axisIndices);
    }

    /**
     * Maps the specified dataset to the axes in the list.  Note that the
     * conversion of data values into Java2D space is always performed using
     * the first axis in the list.
     *
     * @param index  the dataset index (zero-based).
     * @param axisIndices  the axis indices (<code>null</code> permitted).
     *
     * @since 1.0.12
     */
    public void mapDatasetToRangeAxes(int index, List axisIndices) {
        if (index < 0) {
            throw new IllegalArgumentException("Requires 'index' >= 0.");
        }
        checkAxisIndices(axisIndices);
        Integer key = new Integer(index);
        this.datasetToRangeAxesMap.put(key, new ArrayList(axisIndices));
        // fake a dataset change event to update axes...
        datasetChanged(new DatasetChangeEvent(this, getDataset(index)));
    }

    /**
     * Returns the range axis for a dataset.  You can change the axis for a
     * dataset using the {@link #mapDatasetToRangeAxis(int, int)} method.
     *
     * @param index  the dataset index.
     *
     * @return The range axis.
     *
     * @see #mapDatasetToRangeAxis(int, int)
     */
    public ValueAxis getRangeAxisForDataset(int index) {
        if (index < 0) {
            throw new IllegalArgumentException("Negative 'index'.");
        }
        ValueAxis axis = null;
        List axisIndices = (List) this.datasetToRangeAxesMap.get(
                new Integer(index));
        if (axisIndices != null) {
            // the first axis in the list is used for data <--> Java2D
            Integer axisIndex = (Integer) axisIndices.get(0);
            axis = getRangeAxis(axisIndex.intValue());
        }
        else {
            axis = getRangeAxis(0);
        }
        return axis;
    }

    /**
     * Returns the number of renderer slots for this plot.
     *
     * @return The number of renderer slots.
     *
     * @since 1.0.11
     */
    public int getRendererCount() {
        return this.renderers.size();
    }

    /**
     * Returns a reference to the renderer for the plot.
     *
     * @return The renderer.
     *
     * @see #setRenderer(CategoryItemRenderer)
     */
    public CategoryItemRenderer getRenderer() {
        return getRenderer(0);
    }

    /**
     * Returns the renderer at the given index.
     *
     * @param index  the renderer index.
     *
     * @return The renderer (possibly <code>null</code>).
     *
     * @see #setRenderer(int, CategoryItemRenderer)
     */
    public CategoryItemRenderer getRenderer(int index) {
        CategoryItemRenderer result = null;
        if (this.renderers.size() > index) {
            result = (CategoryItemRenderer) this.renderers.get(index);
        }
        return result;
    }

    /**
     * Sets the renderer at index 0 (sometimes referred to as the "primary"
     * renderer) and sends a {@link PlotChangeEvent} to all registered
     * listeners.
     *
     * @param renderer  the renderer (<code>null</code> permitted.
     *
     * @see #getRenderer()
     */
    public void setRenderer(CategoryItemRenderer renderer) {
        setRenderer(0, renderer, true);
    }

    /**
     * Sets the renderer at index 0 (sometimes referred to as the "primary"
     * renderer) and, if requested, sends a {@link PlotChangeEvent} to all
     * registered listeners.
     * <p>
     * You can set the renderer to <code>null</code>, but this is not
     * recommended because:
     * <ul>
     *   <li>no data will be displayed;</li>
     *   <li>the plot background will not be painted;</li>
     * </ul>
     *
     * @param renderer  the renderer (<code>null</code> permitted).
     * @param notify  notify listeners?
     *
     * @see #getRenderer()
     */
    public void setRenderer(CategoryItemRenderer renderer, boolean notify) {
        setRenderer(0, renderer, notify);
    }

    /**
     * Sets the renderer at the specified index and sends a
     * {@link PlotChangeEvent} to all registered listeners.
     *
     * @param index  the index.