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/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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 Lesser General Public License for more details.
*
* Copyright (c) 2000 - 2009 Pentaho Corporation, Object Refinery Limited and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.pixie.wmf.bitmap;
import java.io.IOException;
import java.io.InputStream;
public class GDIPalette
{
private int noColors;
private int[] colors;
public GDIPalette()
{
}
public void setNoOfColors(final int colors)
{
this.noColors = colors;
}
public void setNoOfImportantColors(final int colors)
{
if (colors > noColors)
{
throw new IllegalArgumentException("There may be not more important colors than colors defined in the palette.");
}
}
public void readPalette(final InputStream in)
throws IOException
{
colors = new int[noColors];
for (int i = 0; i < noColors; i++)
{
colors[i] = readNextColor(in);
}
}
private int readNextColor(final InputStream in)
throws IOException
{
final int b = in.read();
final int g = in.read();
final int r = in.read();
//final int filler =
//noinspection ResultOfMethodCallIgnored
in.read();
return b + (g << 8) + (r << 16);
}
public int lookupColor(final int color)
{
if (noColors == 0)
{
// Convert from BGR (windows) format to RGB (java) format
final int b = (color & 0x00ff0000) >> 16;
final int g = (color & 0x0000ff00);
final int r = (color & 0x000000ff);
return b + g + (r << 16);
}
return colors[color];
}
}
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