abstractcategoryitemrenderer.java

java图形利器

                                 PlotOrientation orientation,
                                 CategoryDataset dataset,
                                 int row, int column,
                                 double x, double y,
                                 boolean negative) {

        CategoryItemLabelGenerator generator
            = getItemLabelGenerator(row, column);
        if (generator != null) {
            Font labelFont = getItemLabelFont(row, column);
            Paint paint = getItemLabelPaint(row, column);
            g2.setFont(labelFont);
            g2.setPaint(paint);
            String label = generator.generateLabel(dataset, row, column);
            ItemLabelPosition position = null;
            if (!negative) {
                position = getPositiveItemLabelPosition(row, column);
            }
            else {
                position = getNegativeItemLabelPosition(row, column);
            }
            Point2D anchorPoint = calculateLabelAnchorPoint(
                    position.getItemLabelAnchor(), x, y, orientation);
            TextUtilities.drawRotatedString(label, g2,
                    (float) anchorPoint.getX(), (float) anchorPoint.getY(),
                    position.getTextAnchor(),
                    position.getAngle(), position.getRotationAnchor());
        }

    }

    /**
     * Returns an independent copy of the renderer.  The <code>plot</code>
     * reference is shallow copied.
     *
     * @return A clone.
     *
     * @throws CloneNotSupportedException  can be thrown if one of the objects
     *         belonging to the renderer does not support cloning (for example,
     *         an item label generator).
     */
    public Object clone() throws CloneNotSupportedException {

        AbstractCategoryItemRenderer clone
            = (AbstractCategoryItemRenderer) super.clone();

        if (this.itemLabelGenerator != null) {
            if (this.itemLabelGenerator instanceof PublicCloneable) {
                PublicCloneable pc = (PublicCloneable) this.itemLabelGenerator;
                clone.itemLabelGenerator
                        = (CategoryItemLabelGenerator) pc.clone();
            }
            else {
                throw new CloneNotSupportedException(
                        "ItemLabelGenerator not cloneable.");
            }
        }

        if (this.itemLabelGeneratorList != null) {
            clone.itemLabelGeneratorList
                    = (ObjectList) this.itemLabelGeneratorList.clone();
        }

        if (this.baseItemLabelGenerator != null) {
            if (this.baseItemLabelGenerator instanceof PublicCloneable) {
                PublicCloneable pc
                        = (PublicCloneable) this.baseItemLabelGenerator;
                clone.baseItemLabelGenerator
                        = (CategoryItemLabelGenerator) pc.clone();
            }
            else {
                throw new CloneNotSupportedException(
                        "ItemLabelGenerator not cloneable.");
            }
        }

        if (this.toolTipGenerator != null) {
            if (this.toolTipGenerator instanceof PublicCloneable) {
                PublicCloneable pc = (PublicCloneable) this.toolTipGenerator;
                clone.toolTipGenerator = (CategoryToolTipGenerator) pc.clone();
            }
            else {
                throw new CloneNotSupportedException(
                        "Tool tip generator not cloneable.");
            }
        }

        if (this.toolTipGeneratorList != null) {
            clone.toolTipGeneratorList
                    = (ObjectList) this.toolTipGeneratorList.clone();
        }

        if (this.baseToolTipGenerator != null) {
            if (this.baseToolTipGenerator instanceof PublicCloneable) {
                PublicCloneable pc
                        = (PublicCloneable) this.baseToolTipGenerator;
                clone.baseToolTipGenerator
                        = (CategoryToolTipGenerator) pc.clone();
            }
            else {
                throw new CloneNotSupportedException(
                        "Base tool tip generator not cloneable.");
            }
        }

        if (this.itemURLGenerator != null) {
            if (this.itemURLGenerator instanceof PublicCloneable) {
                PublicCloneable pc = (PublicCloneable) this.itemURLGenerator;
                clone.itemURLGenerator = (CategoryURLGenerator) pc.clone();
            }
            else {
                throw new CloneNotSupportedException(
                        "Item URL generator not cloneable.");
            }
        }

        if (this.itemURLGeneratorList != null) {
            clone.itemURLGeneratorList
                    = (ObjectList) this.itemURLGeneratorList.clone();
        }

        if (this.baseItemURLGenerator != null) {
            if (this.baseItemURLGenerator instanceof PublicCloneable) {
                PublicCloneable pc
                        = (PublicCloneable) this.baseItemURLGenerator;
                clone.baseItemURLGenerator = (CategoryURLGenerator) pc.clone();
            }
            else {
                throw new CloneNotSupportedException(
                        "Base item URL generator not cloneable.");
            }
        }

        if (this.legendItemLabelGenerator instanceof PublicCloneable) {
            clone.legendItemLabelGenerator = (CategorySeriesLabelGenerator)
                    ObjectUtilities.clone(this.legendItemLabelGenerator);
        }
        if (this.legendItemToolTipGenerator instanceof PublicCloneable) {
            clone.legendItemToolTipGenerator = (CategorySeriesLabelGenerator)
                    ObjectUtilities.clone(this.legendItemToolTipGenerator);
        }
        if (this.legendItemURLGenerator instanceof PublicCloneable) {
            clone.legendItemURLGenerator = (CategorySeriesLabelGenerator)
                    ObjectUtilities.clone(this.legendItemURLGenerator);
        }
        return clone;
    }

    /**
     * Returns a domain axis for a plot.
     *
     * @param plot  the plot.
     * @param index  the axis index.
     *
     * @return A domain axis.
     */
    protected CategoryAxis getDomainAxis(CategoryPlot plot, int index) {
        CategoryAxis result = plot.getDomainAxis(index);
        if (result == null) {
            result = plot.getDomainAxis();
        }
        return result;
    }

    /**
     * Returns a range axis for a plot.
     *
     * @param plot  the plot.
     * @param index  the axis index.
     *
     * @return A range axis.
     */
    protected ValueAxis getRangeAxis(CategoryPlot plot, int index) {
        ValueAxis result = plot.getRangeAxis(index);
        if (result == null) {
            result = plot.getRangeAxis();
        }
        return result;
    }

    /**
     * Returns a (possibly empty) collection of legend items for the series
     * that this renderer is responsible for drawing.
     *
     * @return The legend item collection (never <code>null</code>).
     *
     * @see #getLegendItem(int, int)
     */
    public LegendItemCollection getLegendItems() {
        if (this.plot == null) {
            return new LegendItemCollection();
        }
        LegendItemCollection result = new LegendItemCollection();
        int index = this.plot.getIndexOf(this);
        CategoryDataset dataset = this.plot.getDataset(index);
        if (dataset != null) {
            int seriesCount = dataset.getRowCount();
            for (int i = 0; i < seriesCount; i++) {
                if (isSeriesVisibleInLegend(i)) {
                    LegendItem item = getLegendItem(index, i);
                    if (item != null) {
                        result.add(item);
                    }
                }
            }

        }
        return result;
    }

    /**
     * Returns the legend item label generator.
     *
     * @return The label generator (never <code>null</code>).
     *
     * @see #setLegendItemLabelGenerator(CategorySeriesLabelGenerator)
     */
    public CategorySeriesLabelGenerator getLegendItemLabelGenerator() {
        return this.legendItemLabelGenerator;
    }

    /**
     * Sets the legend item label generator and sends a
     * {@link RendererChangeEvent} to all registered listeners.
     *
     * @param generator  the generator (<code>null</code> not permitted).
     *
     * @see #getLegendItemLabelGenerator()
     */
    public void setLegendItemLabelGenerator(
            CategorySeriesLabelGenerator generator) {
        if (generator == null) {
            throw new IllegalArgumentException("Null 'generator' argument.");
        }
        this.legendItemLabelGenerator = generator;
        notifyListeners(new RendererChangeEvent(this));
    }

    /**
     * Returns the legend item tool tip generator.
     *
     * @return The tool tip generator (possibly <code>null</code>).
     *
     * @see #setLegendItemToolTipGenerator(CategorySeriesLabelGenerator)
     */
    public CategorySeriesLabelGenerator getLegendItemToolTipGenerator() {
        return this.legendItemToolTipGenerator;
    }

    /**
     * Sets the legend item tool tip generator and sends a
     * {@link RendererChangeEvent} to all registered listeners.
     *
     * @param generator  the generator (<code>null</code> permitted).
     *
     * @see #setLegendItemToolTipGenerator(CategorySeriesLabelGenerator)
     */
    public void setLegendItemToolTipGenerator(
            CategorySeriesLabelGenerator generator) {
        this.legendItemToolTipGenerator = generator;
        notifyListeners(new RendererChangeEvent(this));
    }

    /**
     * Returns the legend item URL generator.
     *
     * @return The URL generator (possibly <code>null</code>).
     *
     * @see #setLegendItemURLGenerator(CategorySeriesLabelGenerator)
     */
    public CategorySeriesLabelGenerator getLegendItemURLGenerator() {
        return this.legendItemURLGenerator;
    }

    /**
     * Sets the legend item URL generator and sends a
     * {@link RendererChangeEvent} to all registered listeners.
     *
     * @param generator  the generator (<code>null</code> permitted).
     *
     * @see #getLegendItemURLGenerator()
     */
    public void setLegendItemURLGenerator(
            CategorySeriesLabelGenerator generator) {
        this.legendItemURLGenerator = generator;
        notifyListeners(new RendererChangeEvent(this));
    }

    /**
     * Adds an entity with the specified hotspot.
     *
     * @param entities  the entity collection.
     * @param dataset  the dataset.
     * @param row  the row index.
     * @param column  the column index.
     * @param hotspot  the hotspot.
     */
    protected void addItemEntity(EntityCollection entities,
                                 CategoryDataset dataset, int row, int column,
                                 Shape hotspot) {

        String tip = null;
        CategoryToolTipGenerator tipster = getToolTipGenerator(row, column);
        if (tipster != null) {
            tip = tipster.generateToolTip(dataset, row, column);
        }
        String url = null;
        CategoryURLGenerator urlster = getItemURLGenerator(row, column);
        if (urlster != null) {
            url = urlster.generateURL(dataset, row, column);
        }
        CategoryItemEntity entity = new CategoryItemEntity(hotspot, tip, url,
                dataset, dataset.getRowKey(row), dataset.getColumnKey(column));
        entities.add(entity);

    }


}