GwtBitmap.java

/*
 * Copyright 2013 Hannes Janetzek
 *
 * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
 *
 * This program is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU Lesser General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.oscim.gdx.client;

import org.oscim.backend.GL;
import org.oscim.backend.canvas.Bitmap;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.graphics.Pixmap;
import com.google.gwt.dom.client.ImageElement;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.RootPanel;

public class GwtBitmap implements Bitmap {
	Pixmap pixmap;
	Image image;
	boolean disposable;

	public GwtBitmap(Image data) {
		ImageElement imageElement = ImageElement.as(data.getElement());
		pixmap = new Pixmap(imageElement);
		image = data;
	}

	/** always argb8888 */
	public GwtBitmap(int width, int height, int format) {
		pixmap = new Pixmap(width, height, null);
	}

	public GwtBitmap(String fileName) {
		FileHandle handle = Gdx.files.internal(fileName);
		pixmap = new Pixmap(handle);
		disposable = true;
	}

	@Override
	public int getWidth() {
		return pixmap.getWidth();
	}

	@Override
	public int getHeight() {
		return pixmap.getHeight();
	}

	@Override
	public void recycle() {
		// FIXME this should be called at some point in time
		pixmap.dispose();

		if (image != null)
			RootPanel.get().remove(image);
	}

	@Override
	public int[] getPixels() {
		return null;
	}

	@Override
	public void eraseColor(int color) {
	}

	@Override
	public void uploadToTexture(boolean replace) {

		Gdx.gl.glTexImage2D(GL.TEXTURE_2D, 0, pixmap.getGLInternalFormat(), pixmap.getWidth(),
		                    pixmap.getHeight(), 0,
		                    pixmap.getGLFormat(), pixmap.getGLType(), pixmap.getPixels());

		if (disposable || image != null) {
			//log.debug("dispose pixmap " + getWidth() + "/" + getHeight());
			pixmap.dispose();

			if (image != null)
				RootPanel.get().remove(image);
		}
	}

	@Override
	public boolean isValid() {
		return true;
	}

}