Fills the given BufferedImage with a Paint , preserving its alpha channel. - Java 2D Graphics

Java examples for 2D Graphics:BufferedImage Paint

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Description

Fills the given BufferedImage with a Paint , preserving its alpha channel.

Demo Code

/*//w w  w  .  j ava  2  s  .co  m
 * Copyright (C) 2011 The Android Open Source Project
 *
 * 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.java2s;
import java.awt.AlphaComposite;

import java.awt.Graphics2D;

import java.awt.Paint;

import java.awt.image.BufferedImage;

public class Main {
    /**
     * Fills the given {@link BufferedImage} with a {@link Paint}, preserving its alpha channel.
     *
     * @param source The source image.
     * @param paint  The paint to fill with.
     * @return A new, painted/filled image.
     */
    public static BufferedImage filledImage(BufferedImage source,
            Paint paint) {
        BufferedImage newImage = newArgbBufferedImage(source.getWidth(),
                source.getHeight());
        Graphics2D g = (Graphics2D) newImage.getGraphics();
        g.drawImage(source, 0, 0, null);
        g.setComposite(AlphaComposite.SrcAtop);
        g.setPaint(paint);
        g.fillRect(0, 0, source.getWidth(), source.getHeight());
        return newImage;
    }

    /**
     * Creates a new ARGB {@link BufferedImage} of the given width and height.
     *
     * @param width  The width of the new image.
     * @param height The height of the new image.
     * @return The newly created image.
     */
    public static BufferedImage newArgbBufferedImage(int width, int height) {
        return new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    }
}

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