gecko/embedding/android/gfx/SingleTileLayer.java

108 lines
3.7 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 org.mozilla.gecko.gfx.CairoUtils;
import org.mozilla.gecko.gfx.IntSize;
import org.mozilla.gecko.gfx.LayerController;
import org.mozilla.gecko.gfx.TileLayer;
import android.util.Log;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import javax.microedition.khronos.opengles.GL10;
/**
* Encapsulates the logic needed to draw a single textured tile.
*/
public class SingleTileLayer extends TileLayer {
private FloatBuffer mTexCoordBuffer, mVertexBuffer;
private static final float[] VERTICES = {
0.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f,
1.0f, 1.0f, 0.0f
};
private static final float[] TEX_COORDS = {
0.0f, 0.0f,
1.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f
};
public SingleTileLayer() { this(false); }
public SingleTileLayer(boolean repeat) {
super(repeat);
mVertexBuffer = createBuffer(VERTICES);
mTexCoordBuffer = createBuffer(TEX_COORDS);
}
@Override
protected void onTileDraw(GL10 gl) {
IntSize size = getSize();
if (repeats()) {
gl.glMatrixMode(GL10.GL_TEXTURE);
gl.glPushMatrix();
gl.glScalef(LayerController.TILE_WIDTH / size.width,
LayerController.TILE_HEIGHT / size.height,
1.0f);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glScalef(LayerController.TILE_WIDTH, LayerController.TILE_HEIGHT, 1.0f);
} else {
gl.glScalef(size.width, size.height, 1.0f);
}
gl.glBindTexture(GL10.GL_TEXTURE_2D, getTextureID());
drawTriangles(gl, mVertexBuffer, mTexCoordBuffer, 4);
if (repeats()) {
gl.glMatrixMode(GL10.GL_TEXTURE);
gl.glPopMatrix();
gl.glMatrixMode(GL10.GL_MODELVIEW);
}
}
}