Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.graphics.Bitmap;

import android.graphics.Rect;

public class Main {
    /**
     * Special crop of bitmap rotated by not stright angle, in this case the original crop bitmap contains parts
     * beyond the required crop area, this method crops the already cropped and rotated bitmap to the final
     * rectangle.<br>
     * Note: rotating by 0, 90, 180 or 270 degrees doesn't require extra cropping.
     */
    private static Bitmap cropForRotatedImage(Bitmap bitmap, float[] points, Rect rect, int degreesRotated,
            boolean fixAspectRatio, int aspectRatioX, int aspectRatioY) {
        if (degreesRotated % 90 != 0) {

            int adjLeft = 0, adjTop = 0, width = 0, height = 0;
            double rads = Math.toRadians(degreesRotated);
            int compareTo = degreesRotated < 90 || (degreesRotated > 180 && degreesRotated < 270) ? rect.left
                    : rect.right;
            for (int i = 0; i < points.length; i += 2) {
                if (points[i] >= compareTo - 1 && points[i] <= compareTo + 1) {
                    adjLeft = (int) Math.abs(Math.sin(rads) * (rect.bottom - points[i + 1]));
                    adjTop = (int) Math.abs(Math.cos(rads) * (points[i + 1] - rect.top));
                    width = (int) Math.abs((points[i + 1] - rect.top) / Math.sin(rads));
                    height = (int) Math.abs((rect.bottom - points[i + 1]) / Math.cos(rads));
                    break;
                }
            }

            rect.set(adjLeft, adjTop, adjLeft + width, adjTop + height);
            if (fixAspectRatio) {
                fixRectForAspectRatio(rect, aspectRatioX, aspectRatioY);
            }

            Bitmap bitmapTmp = bitmap;
            bitmap = Bitmap.createBitmap(bitmap, rect.left, rect.top, rect.width(), rect.height());
            if (bitmapTmp != bitmap) {
                bitmapTmp.recycle();
            }
        }
        return bitmap;
    }

    /**
     * Fix the given rectangle if it doesn't confirm to aspect ration rule.<br>
     * Make sure that width and height are equal if 1:1 fixed aspect ratio is requested.
     */
    private static void fixRectForAspectRatio(Rect rect, int aspectRatioX, int aspectRatioY) {
        if (aspectRatioX == aspectRatioY && rect.width() != rect.height()) {
            if (rect.height() > rect.width()) {
                rect.bottom -= rect.height() - rect.width();
            } else {
                rect.right -= rect.width() - rect.height();
            }
        }
    }
}