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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.camera;
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;
}
}
}
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