minmaxcategoryrenderer.java

来自「JfreeChart 常用图表例子」· Java 代码 · 共 501 行 · 第 1/2 页

                EntityCollection entities 
                    = state.getInfo().getOwner().getEntityCollection();
                if (entities != null && shape != null) {
                    String tip = null;
                    CategoryToolTipGenerator tipster 
                        = getToolTipGenerator(row, column);
                    if (tipster != null) {
                        tip = tipster.generateToolTip(dataset, row, column);
                    }
                    CategoryItemEntity entity = new CategoryItemEntity(
                        shape, tip, null, dataset, row, 
                        dataset.getColumnKey(column), column);
                    entities.add(entity);
                }
            }
        }
    }

    /**
     * Sets whether or not lines are drawn between category points.
     *
     * @param drawLines  if true, then line will be drawn between sequenced 
     *                   categories.
     */
    public void setDrawLines (boolean drawLines) {
        this.plotLines = drawLines;
    }

    /**
     * Gets whether or not lines are drawn between category points.
     *
     * @return boolean true if line will be drawn between sequenced categories,
     *         otherwise false.
     */
    public boolean isDrawLines () {
        return this.plotLines;
    }

    /**
     * Sets the paint of the line between the minimum value and the maximum 
     * value.
     *
     * @param groupPaint  the new paint.
     */
    public void setGroupPaint (Paint groupPaint) {
        this.groupPaint = groupPaint;
    }

    /**
     * Gets the paint of the line between the minimum value and the maximum 
     * value.
     *
     * @return The paint.
     */
    public Paint getGroupPaint () {
        return this.groupPaint;
    }

    /**
     * Sets the stroke of the line between the minimum value and the maximum 
     * value.
     *
     * @param groupStroke The new stroke
     */
    public void setGroupStroke (Stroke groupStroke) {
        this.groupStroke = groupStroke;
    }

    /**
     * Gets the stroke of the line between the minimum value and the maximum 
     * value.
     *
     * @return Stroke The current stroke.
     */
    public Stroke getGroupStroke () {
        return this.groupStroke;
    }

    /**
     * Sets the icon used to indicate the values.
     *
     * @param objectIcon  the icon.
     */
    public void setObjectIcon (Icon objectIcon) {
        this.objectIcon = objectIcon;
    }

    /**
     * Gets the icon used to indicate the values.
     *
     * @return The icon.
     */
    public Icon getObjectIcon () {
        return this.objectIcon;
    }

    /**
     * Sets the icon used to indicate the maximum value.
     *
     * @param maxIcon  the max icon.
     */
    public void setMaxIcon (Icon maxIcon) {
        this.maxIcon = maxIcon;
    }

    /**
     * Gets the icon used to indicate the maximum value.
     *
     * @return The icon
     */
    public Icon getMaxIcone () {
        return this.maxIcon;
    }

    /**
     * Sets the icon used to indicate the minimum value.
     *
     * @param minIcon  the min icon.
     */
    public void setMinIcon (Icon minIcon) {
        this.minIcon = minIcon;
    }

    /**
     * Gets the icon used to indicate the minimum value.
     *
     * @return Icon
     */
    public Icon getMinIcon () {
        return this.minIcon;
    }

    /**
     * Returns an icon.
     *
     * @param shape  the shape.
     * @param fillPaint  the fill paint.
     * @param outlinePaint  the outline paint.
     *
     * @return The icon.
     */
    private Icon getIcon(Shape shape, final Paint fillPaint, 
                        final Paint outlinePaint) {

      final int width = shape.getBounds().width;
      final int height = shape.getBounds().height;
      final GeneralPath path = new GeneralPath(shape);
      return new Icon() {
          public void paintIcon(Component c, Graphics g, int x, int y) {
              Graphics2D g2 = (Graphics2D) g;
              path.transform(AffineTransform.getTranslateInstance(x, y));
              if (fillPaint != null) {
                  g2.setPaint(fillPaint);
                  g2.fill(path);
              }
              if (outlinePaint != null) {
                  g2.setPaint(outlinePaint);
                  g2.draw(path);
              }
              path.transform(AffineTransform.getTranslateInstance(-x, -y));
        }

        public int getIconWidth() {
            return width;
        }

        public int getIconHeight() {
            return height;
        }

      };
    }

    /**
     * Returns an icon.
     *
     * @param shape  the shape.
     * @param fill  the fill flag.
     * @param outline  the outline flag.
     *
     * @return The icon.
     */
    private Icon getIcon(Shape shape, final boolean fill, 
                         final boolean outline) {
        final int width = shape.getBounds().width;
        final int height = shape.getBounds().height;
        final GeneralPath path = new GeneralPath(shape);
        return new Icon() {
            public void paintIcon(Component c, Graphics g, int x, int y) {
                Graphics2D g2 = (Graphics2D) g;
                path.transform(AffineTransform.getTranslateInstance(x, y));
                if (fill) {
                    g2.fill(path);
                }
                if (outline) {
                    g2.draw(path);
                }
                path.transform(AffineTransform.getTranslateInstance(-x, -y));
            }

            public int getIconWidth() {
                return width;
            }

            public int getIconHeight() {
                return height;
            }
        };
    }
    
    /**
     * Provides serialization support.
     *
     * @param stream  the output stream.
     *
     * @throws IOException  if there is an I/O error.
     */
    private void writeObject(ObjectOutputStream stream) throws IOException {
        stream.defaultWriteObject();
        SerialUtilities.writeStroke(this.groupStroke, stream);
        SerialUtilities.writePaint(this.groupPaint, stream);
    }
    
    /**
     * Provides serialization support.
     *
     * @param stream  the input stream.
     *
     * @throws IOException  if there is an I/O error.
     * @throws ClassNotFoundException  if there is a classpath problem.
     */
    private void readObject(ObjectInputStream stream) 
        throws IOException, ClassNotFoundException {
        stream.defaultReadObject();
        this.groupStroke = SerialUtilities.readStroke(stream);
        this.groupPaint = SerialUtilities.readPaint(stream);
          
        this.minIcon = getIcon(
            new Arc2D.Double(-4, -4, 8, 8, 0, 360, Arc2D.OPEN), null, 
            Color.black
        );
        this.maxIcon = getIcon(
            new Arc2D.Double(-4, -4, 8, 8, 0, 360, Arc2D.OPEN), null, 
            Color.black
        );
        this.objectIcon = getIcon(new Line2D.Double(-4, 0, 4, 0), false, true);
    }
    
}