01: /***********************************************************************************************
02: * File Info: $Id: BackgroundRenderer.java,v 1.1 2003/05/17 16:56:18 nathaniel_auvil Exp $
03: * Copyright (C) 2002
04: * Author: Nathaniel G. Auvil
05: * Contributor(s):
06: *
07: * Copyright 2002 (C) Nathaniel G. Auvil. All Rights Reserved.
08: *
09: * Redistribution and use of this software and associated documentation ("Software"), with or
10: * without modification, are permitted provided that the following conditions are met:
11: *
12: * 1. Redistributions of source code must retain copyright statements and notices.
13: * Redistributions must also contain a copy of this document.
14: *
15: * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
16: * conditions and the following disclaimer in the documentation and/or other materials
17: * provided with the distribution.
18: *
19: * 3. The name "jCharts" or "Nathaniel G. Auvil" must not be used to endorse or promote
20: * products derived from this Software without prior written permission of Nathaniel G.
21: * Auvil. For written permission, please contact nathaniel_auvil@users.sourceforge.net
22: *
23: * 4. Products derived from this Software may not be called "jCharts" nor may "jCharts" appear
24: * in their names without prior written permission of Nathaniel G. Auvil. jCharts is a
25: * registered trademark of Nathaniel G. Auvil.
26: *
27: * 5. Due credit should be given to the jCharts Project (http://jcharts.sourceforge.net/).
28: *
29: * THIS SOFTWARE IS PROVIDED BY Nathaniel G. Auvil AND CONTRIBUTORS ``AS IS'' AND ANY
30: * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
31: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32: * jCharts OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
33: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,STRICT LIABILITY, OR TORT
36: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
37: * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
38: ************************************************************************************************/package org.krysalis.jcharts.axisChart.customRenderers.axisValue.renderers;
39:
40: import org.krysalis.jcharts.axisChart.customRenderers.axisValue.AxisValueRenderEvent;
41: import org.krysalis.jcharts.axisChart.customRenderers.axisValue.PreAxisValueRenderListener;
42:
43: import java.awt.*;
44:
45: public class BackgroundRenderer implements PreAxisValueRenderListener {
46: private Paint paint;
47: private boolean draw = false;
48:
49: /********************************************************************************
50: *
51: * @param paint the paint to do the background in. You might want to use an
52: * alpha less than 255 (as in 'new Color( 20, 20, 20, 50 )' ) as this gets
53: * plotted over top of the axis grid lines.
54: ********************************************************************************/
55: public BackgroundRenderer(Paint paint) {
56: this .paint = paint;
57: }
58:
59: /*********************************************************************************
60: *
61: * @param axisValueRenderEvent
62: *********************************************************************************/
63: public void preRender(AxisValueRenderEvent axisValueRenderEvent) {
64: if (this .draw) {
65: //---keep the current paint around
66: Paint currentPaint = axisValueRenderEvent.getGraphics2D()
67: .getPaint();
68:
69: axisValueRenderEvent.getGraphics2D().setPaint(this .paint);
70: axisValueRenderEvent.getGraphics2D().fill(
71: axisValueRenderEvent.getTotalItemAxisArea());
72:
73: //---reset the current Paint
74: axisValueRenderEvent.getGraphics2D().setPaint(currentPaint);
75: }
76: //todo this is not going to work for clustered bar, stacked bar, etc... as it is called each time
77: //---fill the background of every other item
78: this.draw = !this.draw;
79: }
80:
81: }
|