com.philbeaudoin.quebec.client.scene.Sprite.java Source code

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Here is the source code for com.philbeaudoin.quebec.client.scene.Sprite.java

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/**
 * Copyright 2012 Philippe Beaudoin
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.philbeaudoin.quebec.client.scene;

import java.util.logging.Level;
import java.util.logging.Logger;

import com.google.gwt.canvas.dom.client.Context2d;
import com.google.gwt.dom.client.ImageElement;
import com.philbeaudoin.quebec.client.utils.LoggerFactory;
import com.philbeaudoin.quebec.shared.utils.ConstantTransform;
import com.philbeaudoin.quebec.shared.utils.Transform;

/**
 * A sprite that can be transformed and drawn into an HTML5 2d canvas.
 * @author Philippe Beaudoin <philippe.beaudoin@gmail.com>
 */
public class Sprite extends SceneNodeImpl {
    final Logger logger;

    private final SpriteResources.Info info;

    public Sprite(SpriteResources.Info info) {
        this(info, new ConstantTransform(), true);
    }

    public Sprite(SpriteResources.Info info, Transform transform) {
        this(info, transform, true);
    }

    private Sprite(SpriteResources.Info info, Transform transform, boolean visible) {
        super(transform, visible);
        logger = LoggerFactory.get(Sprite.class);
        this.info = info;
    }

    @Override
    public void drawUntransformed(double time, Context2d context) {
        if (info == null || info.getElement() == null) {
            logger.log(Level.SEVERE, "Trying to draw a sprite with null image element.");
        }
        double sizeFactor = info.getSizeFactor();
        ImageElement imageElement = info.getElement();
        context.scale(sizeFactor, sizeFactor);
        context.drawImage(imageElement, -info.getWidth() / 2, -info.getHeight() / 2);
    }

    @Override
    public SceneNode deepClone() {
        return new Sprite(info, getTransform(), isVisible());
    }

}