gecko-dev/mobile/android/base/gfx/CairoUtils.java

86 lines
3.5 KiB
Java

/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Android code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009-2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Patrick Walton <pcwalton@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.gecko.gfx;
import org.mozilla.gecko.gfx.CairoImage;
import android.graphics.Bitmap;
import javax.microedition.khronos.opengles.GL10;
/**
* Utility methods useful when displaying Cairo bitmaps using OpenGL ES.
*/
public class CairoUtils {
private CairoUtils() { /* Don't call me. */ }
public static int bitsPerPixelForCairoFormat(int cairoFormat) {
switch (cairoFormat) {
case CairoImage.FORMAT_A1: return 1;
case CairoImage.FORMAT_A8: return 8;
case CairoImage.FORMAT_RGB16_565: return 16;
case CairoImage.FORMAT_RGB24: return 24;
case CairoImage.FORMAT_ARGB32: return 32;
default:
throw new RuntimeException("Unknown Cairo format");
}
}
public static int bitmapConfigToCairoFormat(Bitmap.Config config) {
if (config == null)
return CairoImage.FORMAT_ARGB32; /* Droid Pro fix. */
switch (config) {
case ALPHA_8: return CairoImage.FORMAT_A8;
case ARGB_4444: throw new RuntimeException("ARGB_444 unsupported");
case ARGB_8888: return CairoImage.FORMAT_ARGB32;
case RGB_565: return CairoImage.FORMAT_RGB16_565;
default: throw new RuntimeException("Unknown Skia bitmap config");
}
}
public static Bitmap.Config cairoFormatTobitmapConfig(int format) {
switch (format) {
case CairoImage.FORMAT_A8: return Bitmap.Config.ALPHA_8;
case CairoImage.FORMAT_ARGB32: return Bitmap.Config.ARGB_8888;
case CairoImage.FORMAT_RGB16_565: return Bitmap.Config.RGB_565;
default:
throw new RuntimeException("Unknown CairoImage format");
}
}
}