scale Rectangle - Android Graphics

Android examples for Graphics:Rectangle

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Description

scale Rectangle

Demo Code


import android.graphics.Bitmap;
import android.graphics.Rect;
import android.graphics.RectF;
import android.view.View;

public class Main{
    public static Rect scale(RectF src, RectF parent, Scale scaleFactor) {
        return scale(src, scaleFactor.scaleX, scaleFactor.scaleY, parent);
    }//  w  ww  . ja  v a2 s. c  o m
    public static Rect scale(RectF src, float scaleX, float scaleY,
            RectF parent) {
        int parentX = 0;
        int parentY = 0;

        if (parent != null) {
            parentX = (int) parent.left;
            parentY = (int) parent.top;
        }

        int newX = (int) ((src.left - parentX) * scaleX) + parentX;
        int newY = (int) ((src.top - parentY) * scaleY) + parentY;
        int newWidth = (int) (src.width() * scaleX);
        int newHeight = (int) (src.height() * scaleY);
        return new Rect(newX, newY, newX + newWidth, newY + newHeight);
    }
}

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