package com.mzeat.image.crop; import android.graphics.Bitmap; import android.graphics.Matrix; public class RotateBitmap { public static final String TAG = "RotateBitmap"; private Bitmap mBitmap; private int mRotation; public RotateBitmap(Bitmap bitmap) { mBitmap = bitmap; mRotation = 0; } public RotateBitmap(Bitmap bitmap, int rotation) { mBitmap = bitmap; mRotation = rotation % 360; } public void setRotation(int rotation) { mRotation = rotation; } public int getRotation() { return mRotation; } public Bitmap getBitmap() { return mBitmap; } public void setBitmap(Bitmap bitmap) { mBitmap = bitmap; } public Matrix getRotateMatrix() { // By default this is an identity matrix. Matrix matrix = new Matrix(); if (mRotation != 0) { // We want to do the rotation at origin, but since the bounding // rectangle will be changed after rotation, so the delta values // are based on old & new width/height respectively. int cx = mBitmap.getWidth() / 2; int cy = mBitmap.getHeight() / 2; matrix.preTranslate(-cx, -cy); matrix.postRotate(mRotation); matrix.postTranslate(getWidth() / 2, getHeight() / 2); } return matrix; } public boolean isOrientationChanged() { return (mRotation / 90) % 2 != 0; } public int getHeight() { if (isOrientationChanged()) { return mBitmap.getWidth(); } else { return mBitmap.getHeight(); } } public int getWidth() { if (isOrientationChanged()) { return mBitmap.getHeight(); } else { return mBitmap.getWidth(); } } public void recycle() { if (mBitmap != null) { mBitmap.recycle(); mBitmap = null; } } }