abstractrenderer.java

这是一个segy数据显示程序

     */
    public Font getItemLabelFont() {
        return this.itemLabelFont;   
    }
    
    /**
     * Sets the item label font for ALL series and sends a {@link RendererChangeEvent} to all
     * registered listeners.  You can set this to <code>null</code> if you prefer to set the font
     * on a per series basis.
     * 
     * @param font  the font (<code>null</code> permitted).
     */
    public void setItemLabelFont(Font font) {
        setItemLabelFont(font, true);
    }
    
    /**
     * Sets the item label font for ALL series and, if requested, sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param font  the font (<code>null</code> permitted).
     * @param notify  a flag that controls whether or not listeners are notified.
     */
    public void setItemLabelFont(Font font, boolean notify) {
        this.itemLabelFont = font;
        if (notify) {
            notifyListeners(new RendererChangeEvent(this));
        }
    }

    /**
     * Returns the font for all the item labels in a series.
     * 
     * @param series  the series index (zero-based).
     * 
     * @return The font (possibly <code>null</code>).
     */
    public Font getSeriesItemLabelFont(int series) {
        return (Font) this.itemLabelFontList.get(series);
    }

    /**
     * Sets the item label font for a series and sends a {@link RendererChangeEvent} to all
     * registered listeners.  
     * 
     * @param series  the series index (zero-based).
     * @param font  the font (<code>null</code> permitted).
     */
    public void setSeriesItemLabelFont(int series, Font font) {
        setSeriesItemLabelFont(series, font, true);
    }

    /**
     * Sets the item label font for a series and, if requested, sends a {@link RendererChangeEvent}
     * to all registered listeners.
     * 
     * @param series  the series index (zero based).
     * @param font  the font (<code>null</code> permitted).
     * @param notify  a flag that controls whether or not listeners are notified.
     */
    public void setSeriesItemLabelFont(int series, Font font, boolean notify) {
        this.itemLabelFontList.set(series, font);
        if (notify) {
            notifyListeners(new RendererChangeEvent(this));
        }
    }
    
    /**
     * Returns the base item label font (this is used when no other font setting is available).
     * 
     * @return The font (<code>never</code> null).
     */
    public Font getBaseItemLabelFont() {
        return this.baseItemLabelFont;
    }

    /**
     * Sets the base item label font and sends a {@link RendererChangeEvent} to all
     * registered listeners.  
     * 
     * @param font  the font (<code>null</code> not permitted).
     */
    public void setBaseItemLabelFont(Font font) {
        if (font == null) {
            throw new IllegalArgumentException("Null 'font' argument.");
        }
        setBaseItemLabelFont(font, true);
    }

    /**
     * Sets the base item label font and, if requested, sends a {@link RendererChangeEvent} to all
     * registered listeners.
     * 
     * @param font  the font (<code>null</code> not permitted).
     * @param notify  a flag that controls whether or not listeners are notified.
     */
    public void setBaseItemLabelFont(Font font, boolean notify) {
        this.baseItemLabelFont = font;
        if (notify) {
            notifyListeners(new RendererChangeEvent(this));
        }
    }

    //// ITEM LABEL PAINT  ///////////////////////////////////////////////////////////////////////

    /**
     * Returns the paint used to draw an item label.
     * 
     * @param row  the row index (zero based).
     * @param column  the column index (zero based).
     * 
     * @return The paint (never <code>null</code>).
     */
    public Paint getItemLabelPaint(int row, int column) {
        Paint result = getSeriesItemLabelPaint(row);
        if (result == null) {
            result = this.baseItemLabelPaint;   
        }
        return result;
    }
    
    /**
     * Returns the paint used for all item labels.  This may be <code>null</code>, in which case 
     * the per series paint settings will apply.
     * 
     * @return The paint (possibly <code>null</code>).
     */
    public Paint getItemLabelPaint() {
        return this.itemLabelPaint;   
    }

    /**
     * Sets the item label paint for ALL series and sends a {@link RendererChangeEvent} to all
     * registered listeners.
     * 
     * @param paint  the paint (<code>null</code> permitted).
     */
    public void setItemLabelPaint(Paint paint) {
        setItemLabelPaint(paint, true);
    }

    /**
     * Sets the item label paint for ALL series and, if requested, sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param paint  the paint.
     * @param notify  a flag that controls whether or not listeners are notified.
     */
    public void setItemLabelPaint(Paint paint, boolean notify) {
        this.itemLabelPaint = paint;
        if (notify) {
            notifyListeners(new RendererChangeEvent(this));
        }
    }
    
    /**
     * Returns the paint used to draw the item labels for a series.
     * 
     * @param series  the series index (zero based).
     * 
     * @return The paint (possibly <code>null<code>).
     */
    public Paint getSeriesItemLabelPaint(int series) {
        return this.itemLabelPaintList.getPaint(series);
    }

    /**
     * Sets the item label paint for a series and sends a {@link RendererChangeEvent} to all 
     * registered listeners.
     * 
     * @param series  the series (zero based index).
     * @param paint  the paint (<code>null</code> permitted).
     */
    public void setSeriesItemLabelPaint(int series, Paint paint) {
        setSeriesItemLabelPaint(series, paint, true);
    }
    
    /**
     * Sets the item label paint for a series and, if requested, sends a {@link RendererChangeEvent}
     * to all registered listeners.
     * 
     * @param series  the series index (zero based).
     * @param paint  the paint (<code>null</code> permitted).
     * @param notify  a flag that controls whether or not listeners are notified.
     */
    public void setSeriesItemLabelPaint(int series, Paint paint, boolean notify) {
        this.itemLabelPaintList.setPaint(series, paint);
        if (notify) {
            notifyListeners(new RendererChangeEvent(this));
        }
    }
    
    /**
     * Returns the base item label paint.
     * 
     * @return The paint (never <code>null<code>).
     */
    public Paint getBaseItemLabelPaint() {
        return this.baseItemLabelPaint;
    }

    /**
     * Sets the base item label paint and sends a {@link RendererChangeEvent} to all
     * registered listeners.
     * 
     * @param paint  the paint (<code>null</code> not permitted).
     */
    public void setBaseItemLabelPaint(Paint paint) {
        // defer argument checking...
        setBaseItemLabelPaint(paint, true);
    }

    /**
     * Sets the base item label paint and, if requested, sends a {@link RendererChangeEvent} 
     * to all registered listeners..
     * 
     * @param paint  the paint (<code>null</code> not permitted).
     * @param notify  a flag that controls whether or not listeners are notified.
     */
    public void setBaseItemLabelPaint(Paint paint, boolean notify) {
        if (paint == null) {
            throw new IllegalArgumentException("Null 'paint' argument.");   
        }
        this.baseItemLabelPaint = paint;
        if (notify) {
            notifyListeners(new RendererChangeEvent(this));
        }
    }
    
    // POSITIVE ITEM LABEL POSITION...

    /**
     * Returns the item label position for positive values.
     * 
     * @param row  the row index (zero-based).
     * @param column  the column index (zero-based).
     * 
     * @return The item label position (never <code>null</code>).
     */
    public ItemLabelPosition getPositiveItemLabelPosition(int row, int column) {
        return getSeriesPositiveItemLabelPosition(row);
    }

    /**
     * Returns the item label position for positive values in ALL series.
     * 
     * @return The item label position (possibly <code>null</code>).
     */
    public ItemLabelPosition getPositiveItemLabelPosition() {
        return this.positiveItemLabelPosition;
    }

    /**
     * Sets the item label position for positive values in ALL series, and sends a 
     * {@link RendererChangeEvent} to all registered listeners.  You need to set this to
     * <code>null</code> to expose the settings for individual series.
     * 
     * @param position  the position (<code>null</code> permitted).
     */
    public void setPositiveItemLabelPosition(ItemLabelPosition position) {
        setPositiveItemLabelPosition(position, true);
    }
    
    /**
     * Sets the positive item label position for ALL series and (if requested) sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param position  the position (<code>null</code> permitted).
     * @param notify  notify registered listeners?
     */
    public void setPositiveItemLabelPosition(ItemLabelPosition position, boolean notify) {
        this.positiveItemLabelPosition = position;
        if (notify) {
            notifyListeners(new RendererChangeEvent(this));
        }
    }

    /**
     * Returns the item label position for all positive values in a series.
     * 
     * @param series  the series index (zero-based).
     * 
     * @return The item label position (never <code>null</code>).
     */
    public ItemLabelPosition getSeriesPositiveItemLabelPosition(int series) {

        // return the override, if there is one...
        if (this.positiveItemLabelPosition != null) {
            return this.positiveItemLabelPosition;
        }

        // otherwise look up the position table
        ItemLabelPosition position 
            = (ItemLabelPosition) this.positiveItemLabelPositionList.get(series);
        if (position == null) {
            position = this.basePositiveItemLabelPosition;
        }
        return position;

    }
    
    /**
     * Sets the item label position for all positive values in a series and sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param series  the series index (zero-based).
     * @param position  the position (<code>null</code> permitted).
     */
    public void setSeriesPositiveItemLabelPosition(int series, ItemLabelPosition position) {
        setSeriesPositiveItemLabelPosition(series, position, true);
    }

    /**
     * Sets the item label position for all positive values in a series and (if requested) sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param series  the series index (zero-based).
     * @param position  the position (<code>null</code> permitted).
     * @param notify  notify registered listeners?
     */
    public void setSeriesPositiveItemLabelPosition(int series, ItemLabelPosition position, 
                                                   boolean notify) {
        this.positiveItemLabelPositionList.set(series, position);
        if (notify) {
            notifyListeners(new RendererChangeEvent(this));
        }
    }

    /**
     * Returns the base positive item label position.
     * 
     * @return The position (never <code>null</code>).
     */
    public ItemLabelPosition getBasePositiveItemLabelPosition() {
        return this.basePositiveItemLabelPosition;
    }

    /**
     * Sets the base positive item label position.
     * 
     * @param position  the position (<code>null</code> not permitted).
     */
    public void setBasePositiveItemLabelPosition(ItemLabelPosition position) {
        // defer argument checking...
        setBasePositiveItemLabelPosition(position, true);
    }
    
    /**
     * Sets the base positive item label position and, if requested, sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param position  the position (<code>null</code> not permitted).
     * @param notify  notify registered listeners?
     */
    public void setBasePositiveItemLabelPosition(ItemLabelPosition position, boolean notify) {
        if (position == null) {
            throw new IllegalArgumentException("Null 'position' argument.");   
        }
        this.basePositiveItemLabelPosition = position;
        if (notify) {
            notifyListeners(new RendererChangeEvent(this));
        }
    }

    // NEGATIVE ITEM LABEL POSITION...

    /**
     * Returns the item label position for negative values.  This method can be overridden to 
     * provide customisation of the item label position for individual data items.
     * 
     * @param row  the row index (zero-based).
     * @param column  the column (zero-based).
     * 
     * @return The item label position (never <code>null</code>).
     */
    public ItemLabelPosition getNegativeItemLabelPosition(int row, int column) {
        return getSeriesNegativeItemLabelPosition(row);
    }

    /**