Java Draw Image drawCenteredImage(Rectangle2D bounds, Graphics2D g2, Image image, ImageObserver observer, int imageWidth, int imageHeight, boolean shrink)

Description

draw Centered Image

License

Open Source License

Declaration

public static void drawCenteredImage(Rectangle2D bounds, Graphics2D g2, Image image, ImageObserver observer,
            int imageWidth, int imageHeight, boolean shrink) 

Method Source Code

//package com.java2s;

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

import java.awt.geom.Rectangle2D;

import java.awt.image.ImageObserver;

public class Main {
    public static void drawCenteredImage(Rectangle2D bounds, Graphics2D g2, Image image, ImageObserver observer,
            int imageWidth, int imageHeight, boolean shrink) {
        int x = (int) bounds.getX();
        int y = (int) bounds.getY();
        int w = Math.min(imageWidth, (int) bounds.getWidth());
        int h = Math.min(imageHeight, (int) bounds.getHeight());

        if (shrink && ((imageWidth > bounds.getWidth()) || (imageHeight > bounds.getHeight()))) {
            // shrink image to match bounds - keep aspect ratio fixed
            double scaleWidth = bounds.getWidth() / imageWidth;
            double scaleHeight = bounds.getHeight() / imageHeight;
            if (scaleWidth < scaleHeight) {
                w = (int) (scaleWidth * imageWidth);
                h = (int) (scaleWidth * imageHeight);
            } else {
                w = (int) (scaleHeight * imageWidth);
                h = (int) (scaleHeight * imageHeight);
            }/* ww w  .  j av  a2 s. c om*/
            // scales the image
            g2.drawImage(image, x, y, w, h, /* g2.getColor(),*/ observer);
        } else {
            // center the image
            x += (int) Math.max(bounds.getX(), (bounds.getWidth() - w) / 2); // center horizontally
            y += (int) Math.max(bounds.getY(), (bounds.getHeight() - h) / 2); // center vertically
            // chop off the outer rim of the image if necessary
            int srcX = Math.max(0, (imageWidth / 2) - (w / 2));
            int srcY = Math.max(0, (imageHeight / 2) - (h / 2));
            // no scaling is done here - note it uses only (x, y) coordinates, not width and height
            g2.drawImage(image, x, y, x + w, y + h, srcX, srcY, srcX + w, srcY + h, /* g2.getColor(),*/ observer);
        }
    }
}

Related

1. drawBorders(final BufferedImage image, final int currentX, final int currentY, final int width, final int height, final int subImageWidth, final int subImageHeight, final Color c)
2. drawBoundingPolygon(BufferedImage canvas, Polygon p, Color fgColour)
3. drawBubble(BufferedImage img, Graphics g, Component component)
4. drawBytes(BufferedImage image, byte[] buf)
5. drawCenterCrop(Graphics2D g, BufferedImage source, Rectangle dstRect)
6. DrawCross(BufferedImage bi, Point pt)
7. drawImage(BufferedImage bi, RenderedImage im)
8. drawImage(BufferedImage originalImage, BufferedImage scaledImage, int width, int height)
9. drawImage(BufferedImage srcImg, BufferedImage img2Draw, int w, int h)