Ray Chen | 012d0f3 | 2009-07-20 16:33:41 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.camera; |
| 18 | |
| 19 | import android.graphics.Bitmap; |
| 20 | import android.graphics.Matrix; |
Ray Chen | 012d0f3 | 2009-07-20 16:33:41 +0800 | [diff] [blame] | 21 | |
| 22 | public class RotateBitmap { |
| 23 | public static final String TAG = "RotateBitmap"; |
| 24 | private Bitmap mBitmap; |
| 25 | private int mRotation; |
| 26 | |
| 27 | public RotateBitmap(Bitmap bitmap) { |
| 28 | mBitmap = bitmap; |
| 29 | mRotation = 0; |
| 30 | } |
| 31 | |
| 32 | public RotateBitmap(Bitmap bitmap, int rotation) { |
| 33 | mBitmap = bitmap; |
| 34 | mRotation = rotation % 360; |
| 35 | } |
| 36 | |
| 37 | public void setRotation(int rotation) { |
| 38 | mRotation = rotation; |
| 39 | } |
| 40 | |
| 41 | public int getRotation() { |
| 42 | return mRotation; |
| 43 | } |
| 44 | |
| 45 | public Bitmap getBitmap() { |
| 46 | return mBitmap; |
| 47 | } |
| 48 | |
| 49 | public void setBitmap(Bitmap bitmap) { |
| 50 | mBitmap = bitmap; |
| 51 | } |
| 52 | |
| 53 | public Matrix getRotateMatrix() { |
| 54 | // By default this is an identity matrix. |
| 55 | Matrix matrix = new Matrix(); |
| 56 | if (mRotation != 0) { |
| 57 | // We want to do the rotation at origin, but since the bounding |
| 58 | // rectangle will be changed after rotation, so the delta values |
| 59 | // are based on old & new width/height respectively. |
| 60 | int cx = mBitmap.getWidth() / 2; |
| 61 | int cy = mBitmap.getHeight() / 2; |
| 62 | matrix.preTranslate(-cx, -cy); |
| 63 | matrix.postRotate(mRotation); |
| 64 | matrix.postTranslate(getWidth() / 2, getHeight() / 2); |
| 65 | } |
| 66 | return matrix; |
| 67 | } |
| 68 | |
| 69 | public boolean isOrientationChanged() { |
| 70 | return (mRotation / 90) % 2 != 0; |
| 71 | } |
| 72 | |
| 73 | public int getHeight() { |
| 74 | if (isOrientationChanged()) { |
| 75 | return mBitmap.getWidth(); |
| 76 | } else { |
| 77 | return mBitmap.getHeight(); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | public int getWidth() { |
| 82 | if (isOrientationChanged()) { |
| 83 | return mBitmap.getHeight(); |
| 84 | } else { |
| 85 | return mBitmap.getWidth(); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | public void recycle() { |
| 90 | if (mBitmap != null) { |
| 91 | mBitmap.recycle(); |
| 92 | mBitmap = null; |
| 93 | } |
| 94 | } |
| 95 | } |
| 96 | |