/*==========================================================================*\
| $Id: WCChartTheme.java,v 1.3 2010/09/26 16:24:50 stedwar2 Exp $
|*-------------------------------------------------------------------------*|
| Copyright (C) 2010 Virginia Tech
|
| This file is part of Web-CAT.
|
| Web-CAT is free software; you can redistribute it and/or modify
| it under the terms of the GNU Affero General Public License as published
| by the Free Software Foundation; either version 3 of the License, or
| (at your option) any later version.
|
| Web-CAT is distributed in the hope that it will be useful,
| but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
| GNU General Public License for more details.
|
| You should have received a copy of the GNU Affero General Public License
| along with Web-CAT; if not, see <http://www.gnu.org/licenses/>.
\*==========================================================================*/
package org.webcat.grader.graphs;
import java.awt.Color;
import java.awt.Font;
import java.awt.Paint;
import org.jfree.chart.StandardChartTheme;
import org.jfree.chart.plot.DefaultDrawingSupplier;
import org.jfree.chart.renderer.category.StandardBarPainter;
import org.jfree.chart.renderer.xy.StandardXYBarPainter;
import org.webcat.core.Theme;
//-------------------------------------------------------------------------
/**
* A JFreeChart theme that pulls information about colors from a user's current
* Web-CAT theme.
*
* @author Tony Allevato
* @version $Id: WCChartTheme.java,v 1.3 2010/09/26 16:24:50 stedwar2 Exp $
*/
public class WCChartTheme extends StandardChartTheme
{
//~ Constructors ..........................................................
// ----------------------------------------------------------
/**
* Initializes a new WCChartTheme, which is a JFreeChart theme that is
* customized for Web-CAT and can eventually pull values directly from the
* user's currently selected Web-CAT theme.
*
* @param theme the user's currently selected Web-CAT theme
*/
public WCChartTheme(Theme theme)
{
super("Web-CAT");
if (theme != null)
{
this.theme = theme;
}
else
{
this.theme = Theme.defaultTheme();
}
// Use the font that we currently have as the default Web-CAT font.
String fontName = defaultFontName();
setExtraLargeFont(new Font(fontName, Font.BOLD, 20));
setLargeFont(new Font(fontName, Font.BOLD, 14));
setRegularFont(new Font(fontName, Font.BOLD, 12));
setSmallFont(new Font(fontName, Font.BOLD, 10));
// Set the text color based on whether the theme is light or dark.
Color textColor = textColor();
setAxisLabelPaint(textColor);
setItemLabelPaint(textColor);
setLegendItemPaint(textColor);
setSubtitlePaint(textColor);
setTickLabelPaint(textColor);
setTitlePaint(textColor);
// Make the background of the charts transparent.
setPlotBackgroundPaint(new Color(144, 144, 144, 128));
Color transparent = new Color(0, 0, 0, 0);
setChartBackgroundPaint(transparent);
setLegendBackgroundPaint(transparent);
// Kill the gradients that newer versions of JFreeChart add by default.
setDrawingSupplier(new ThemeBasedDrawingSupplier());
setBarPainter(new StandardBarPainter());
setXYBarPainter(new StandardXYBarPainter());
}
//~ Methods ...............................................................
// ----------------------------------------------------------
/**
* Gets the name of the font that should be used for titles and labels.
*
* @return the name of the title/label font
*/
protected String defaultFontName()
{
return "Trebuchet MS";
}
// ----------------------------------------------------------
/**
* Gets a small font appropriate to display numbers along axes.
*
* @return a small font
*/
public Font smallFont()
{
if (smallFont == null)
{
smallFont = new Font(defaultFontName(), Font.PLAIN, 10);
}
return smallFont;
}
// ----------------------------------------------------------
/**
* Gets the text color to use for titles, labels, and axes.
*
* @return the text color
*/
public Color textColor()
{
return theme.isDark() ?
textColorForDarkThemes : textColorForLightThemes;
}
//~ Static/instance variables .............................................
// ----------------------------------------------------------
/**
* A drawing supplier that uses information from the user's currently
* selected theme to choose appropriate fill and outline colors.
*/
private class ThemeBasedDrawingSupplier extends DefaultDrawingSupplier
{
// ----------------------------------------------------------
/**
* Initializes a new instance of the ThemeBasedDrawingSupplier class.
*/
public ThemeBasedDrawingSupplier()
{
if (theme.isDark())
{
outlinePaints = outlinePaintsForDarkThemes;
barPaints = barPaintsForDarkThemes;
}
else
{
outlinePaints = outlinePaintsForLightThemes;
barPaints = barPaintsForLightThemes;
}
}
// ----------------------------------------------------------
public Paint getNextOutlinePaint()
{
Paint paint = outlinePaints[outlinePaintIndex % outlinePaints.length];
outlinePaintIndex++;
return paint;
}
// ----------------------------------------------------------
public Paint getNextPaint()
{
Paint paint = barPaints[barPaintIndex % barPaints.length];
barPaintIndex++;
return paint;
}
//~ Static/instance variables .........................................
private Paint[] outlinePaints;
private Paint[] barPaints;
private int outlinePaintIndex;
private int barPaintIndex;
private final Paint[] outlinePaintsForLightThemes = {
new Color(15, 44, 15), // green
new Color(75, 10, 15), // red
new Color(13, 12, 41), // blue
new Color(95, 95, 15), // yellow
new Color(92, 42, 15), // orange
new Color(17, 75, 75), // cyan
};
private final Paint[] barPaintsForLightThemes = {
new Color(32, 112, 32), // green
new Color(192, 32, 32), // red
new Color(32, 32, 112), // blue
new Color(224, 224, 32), // yellow
new Color(224, 112, 32), // orange
new Color(32, 192, 192), // cyan
};
private final Paint[] outlinePaintsForDarkThemes = {
new Color(15, 96, 0), // green
new Color(92, 0, 5), // red
new Color(20, 48, 93), // blue
new Color(105, 105, 15), // yellow
new Color(92, 42, 15), // orange
new Color(19, 94, 94), // cyan
};
private final Paint[] barPaintsForDarkThemes = {
new Color(0, 224, 0), // green
new Color(224, 0, 0), // red
new Color(48, 128, 224), // blue
new Color(248, 248, 32), // yellow
new Color(224, 112, 32), // orange
new Color(32, 224, 224), // cyan
};
}
//~ Static/instance variables .............................................
private Theme theme;
private Font smallFont;
private static Color textColorForDarkThemes = new Color(224, 224, 224);
private static Color textColorForLightThemes = new Color(24, 24, 24);
}