Java Graphics Draw Background paintStretchedAspectRatioBackground(final Graphics2D g, final Rectangle bounds, final Image backgroundImage, final float opacity)

Description

paint Stretched Aspect Ratio Background

License

Open Source License

Declaration

private static void paintStretchedAspectRatioBackground(final Graphics2D g, final Rectangle bounds,
            final Image backgroundImage, final float opacity) 

Method Source Code

//package com.java2s;
/*//  w  w  w.j a  v  a  2  s.  c o  m
 * Copyright (c) 2006-2017 DMDirc Developers
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

import java.awt.AlphaComposite;

import java.awt.Composite;

import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Rectangle;

public class Main {
    private static void paintStretchedAspectRatioBackground(final Graphics2D g, final Rectangle bounds,
            final Image backgroundImage, final float opacity) {
        final double widthratio = bounds.width / (double) backgroundImage.getWidth(null);
        final double heightratio = bounds.height / (double) backgroundImage.getHeight(null);
        final double ratio = Math.min(widthratio, heightratio);
        final int width = (int) (backgroundImage.getWidth(null) * ratio);
        final int height = (int) (backgroundImage.getWidth(null) * ratio);

        final int x = bounds.width / 2 - width / 2;
        final int y = bounds.height / 2 - height / 2;
        final Composite originalComposite = g.getComposite();
        g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, opacity));
        g.drawImage(backgroundImage, x, y, width, height, null);
        g.setComposite(originalComposite);
    }
}

Related

1. drawEditableBackground(Graphics2D g2d, Color leftColor, Color rightColor, int width, int height, int iconWidth, boolean isReversed)
2. drawMenuBezel(Graphics g, Color background, int x, int y, int width, int height)
3. drawVistaBackground(Graphics g, Component b, Color start, Color mid, Color end)
4. fillVisibleBackground(final Graphics g, final JComponent c)
5. paintNoBackground(final Graphics2D g, final Shape bounds)
6. paintStretchedBackground(final Graphics2D g, final Rectangle bounds, final Image backgroundImage, final float opacity)