/**

 * Back 2 Browser Bytecode Translator Copyright (C) 2012 Jaroslav Tulach

 * <jaroslav.tulach@apidesign.org>

 *

 * This program is free software: you can redistribute it and/or modify it under

 * the terms of the GNU General Public License as published by the Free Software

 * Foundation, version 2 of the License.

 *

 * 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 General Public License for more

 * details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program. Look for COPYING file in the top folder. If not, see

 * http://opensource.org/licenses/GPL-2.0.

 */

package net.java.html.canvas;

/**

 * ImageData is an updateable 2-Dimensional Map of Color values. Created (

 * createPixelMap / getSnapShot ) by GraphicsContext. you can modify the

 * individual pixels and render it using paintPixelMap on GraphicsContext

 *

 * @author antonepple

 */

public interface ImageData {

    /**

     * get the height.

     *

     * @return the height

     */

    public double getHeight();

    /**

     * get the width

     *

     * @return the width

     */

    public double getWidth();

    /**

     * get the red value at a specified coordinate

     *

     * @param x

     * @param y

     * @return the red value as an int (0 -255)

     */

    public int getR(int x, int y);

    /**

     * get the green value at a specified coordinate

     *

     * @param x

     * @param y

     * @return the green value as an int (0 -255)

     */

    public int getG(int x, int y);

    /**

     * get the blue value at a specified coordinate

     *

     * @param x

     * @param y

     * @return the blue value as an int (0 -255)

     */

    public int getB(int x, int y);

    /**

     * get the alpha (transparency) value at a specified coordinate

     *

     * @param x

     * @param y

     * @return the alpha value as an int (0 - 255)

     */

    public int getA(int x, int y);

     /**

     * set the red value at a specified coordinate

     *

     * @param x

     * @param y

     * @param value the red value as an int (0 - 255)

     */

    public void setR(int x, int y, int value);

     /**

     * set the green value at a specified coordinate

     *

     * @param x

     * @param y

     * @param value the green value as an int (0 - 255)

     */

    public void setG(int x, int y, int value);

     /**

     * set the blue value at a specified coordinate

     *

     * @param x

     * @param y

     * @param value the blue value as an int (0 - 255)

     */

    public void setB(int x, int y, int value);

    /**

     * set the alpha (transparency) value at a specified coordinate

     *

     * @param x

     * @param y

     * @param value the alpha value as an int (0 - 255)

     */

    public void setA(int x, int y, int value);

}