Paint a backing bitmap into the specified rectangle of the passed Graphics object. - Java 2D Graphics

Java examples for 2D Graphics:Paint

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Description

Paint a backing bitmap into the specified rectangle of the passed Graphics object.

Demo Code

/*//from   w w  w.  ja  v  a  2s .  c o m
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//package com.java2s;
import javax.swing.*;
import java.awt.*;
import java.awt.geom.Area;

public class Main {
    private static Rectangle scratch = new Rectangle();

    /**
     * Paint a backing bitmap into the specified rectangle of the passed
     * Graphics object.  Sets the clipping rectangle to match the coordinates
     * and loops until the rectangle has been filled with the texture.
     */
    private static void blitBitmap(Graphics g, Icon icon, int x, int y,
            int w, int h) {
        //Store the current clip to reset it after
        Shape clip = g.getClip();

        if (clip == null) {
            //Limit it to the space we're requested to paint
            g.setClip(x, y, w, h);
        } else {
            //If there is an existing clip, get the intersection with the
            //rectangle we want to paint and set that

            scratch.setBounds(x, y, w, h);
            Area area = new Area(clip);
            area.intersect(new Area(scratch));
            g.setClip(area);
        }
        int iwidth = icon.getIconWidth();
        int widthPainted = 0;
        while (widthPainted < w) {
            //Loop until we've covered the entire area
            icon.paintIcon(null, g, x + widthPainted, y);
            widthPainted += iwidth;
        }

        //restore the clip
        g.setClip(clip);
    }
}

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