1ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin/* 2ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * Copyright (C) 2009 The Android Open Source Project 3ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * 4ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * Licensed under the Apache License, Version 2.0 (the "License"); 5ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * you may not use this file except in compliance with the License. 6ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * You may obtain a copy of the License at 7ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * 8ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * http://www.apache.org/licenses/LICENSE-2.0 9ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * 10ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * Unless required by applicable law or agreed to in writing, software 11ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * distributed under the License is distributed on an "AS IS" BASIS, 12ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * See the License for the specific language governing permissions and 14ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin * limitations under the License. 15ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin */ 16ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin 17ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Linpackage com.android.camera; 18ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin 19ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Linimport android.content.Context; 2064f9e54b860d158f8317bce7d4e8b6af5cbcfbabPin Tingimport android.content.res.Configuration; 21ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Linimport android.util.AttributeSet; 22892781804513066b68b4a2fa6f846e862dac252aOwen Linimport android.view.View; 2329c6b08eea023aa834e66802b6171b8d33b2b7d8Ahbong Changimport android.view.ViewStub; 2459ddc8c1add2fcffe523e3877baad1b6cc5ba2fbChung-yih Wangimport android.widget.RelativeLayout; 25ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang 26525667ff4b93a577298085fe45660a2d15b0bd06Angus Kongimport com.android.camera.ui.LayoutChangeHelper; 27525667ff4b93a577298085fe45660a2d15b0bd06Angus Kongimport com.android.camera.ui.LayoutChangeNotifier; 2829c6b08eea023aa834e66802b6171b8d33b2b7d8Ahbong Changimport com.android.gallery3d.common.ApiHelper; 29525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong 30271b3095b9f763421c0547109da9de774795072dChih-Chung Chang/** 3102ec7c0880ded5863d73d6f173ef35ab5c888dcdWu-cheng Li * A layout which handles the preview aspect ratio. 32271b3095b9f763421c0547109da9de774795072dChih-Chung Chang */ 33525667ff4b93a577298085fe45660a2d15b0bd06Angus Kongpublic class PreviewFrameLayout extends RelativeLayout implements LayoutChangeNotifier { 349713c56dfe1c298ab0c2c75d324dc69395d1c809Michael Kolb 359713c56dfe1c298ab0c2c75d324dc69395d1c809Michael Kolb private static final String TAG = "CAM_preview"; 369713c56dfe1c298ab0c2c75d324dc69395d1c809Michael Kolb 37271b3095b9f763421c0547109da9de774795072dChih-Chung Chang /** A callback to be invoked when the preview frame's size changes. */ 381f0564eb75f20943d496109928b5542902d3bd61Wei-Ta Chen public interface OnSizeChangedListener { 3914eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li public void onSizeChanged(int width, int height); 401f0564eb75f20943d496109928b5542902d3bd61Wei-Ta Chen } 411f0564eb75f20943d496109928b5542902d3bd61Wei-Ta Chen 424c7b291018e08dbb4bc1712d95117a294fa1416cWu-cheng Li private double mAspectRatio; 43ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang private View mBorder; 4414eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li private OnSizeChangedListener mListener; 45525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong private LayoutChangeHelper mLayoutChangeHelper; 466988d4e2ef8d14d8bf3ee81c8eb3175bbf1b88ecOwen Lin 47ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin public PreviewFrameLayout(Context context, AttributeSet attrs) { 48ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin super(context, attrs); 494c7b291018e08dbb4bc1712d95117a294fa1416cWu-cheng Li setAspectRatio(4.0 / 3.0); 50525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong mLayoutChangeHelper = new LayoutChangeHelper(this); 51ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin } 52ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin 53913f3784d368a5e11fee5d5db2c355ef832685daWu-cheng Li @Override 54ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang protected void onFinishInflate() { 55ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang mBorder = findViewById(R.id.preview_border); 5629c6b08eea023aa834e66802b6171b8d33b2b7d8Ahbong Chang if (ApiHelper.HAS_FACE_DETECTION) { 5729c6b08eea023aa834e66802b6171b8d33b2b7d8Ahbong Chang ViewStub faceViewStub = (ViewStub) findViewById(R.id.face_view_stub); 58cfa5ce94e6e67d046f52365374670c625eb037c1Ahbong Chang /* preview_frame_video.xml does not have face view stub, so we need to 59cfa5ce94e6e67d046f52365374670c625eb037c1Ahbong Chang * check that. 60cfa5ce94e6e67d046f52365374670c625eb037c1Ahbong Chang */ 613e1cbc8404a8ffe5cf6fae032363ef6c0ff78d54Ahbong Chang if (faceViewStub != null) { 62cfa5ce94e6e67d046f52365374670c625eb037c1Ahbong Chang faceViewStub.inflate(); 63cfa5ce94e6e67d046f52365374670c625eb037c1Ahbong Chang } 6429c6b08eea023aa834e66802b6171b8d33b2b7d8Ahbong Chang } 65ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang } 66ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang 67ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin public void setAspectRatio(double ratio) { 68ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin if (ratio <= 0.0) throw new IllegalArgumentException(); 694c7b291018e08dbb4bc1712d95117a294fa1416cWu-cheng Li 70ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin if (mAspectRatio != ratio) { 71ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin mAspectRatio = ratio; 72ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin requestLayout(); 73ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin } 74ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin } 75ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin 76db3556078a75be0bd4a08195d90f060724034e88Chung-yih Wang public void showBorder(boolean enabled) { 77ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang mBorder.setVisibility(enabled ? View.VISIBLE : View.INVISIBLE); 78ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang } 79ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang 80ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang public void fadeOutBorder() { 81ec38f8b0e662f945738ce31c7f70eb67300f960eakahuang Util.fadeOut(mBorder); 82db3556078a75be0bd4a08195d90f060724034e88Chung-yih Wang } 83db3556078a75be0bd4a08195d90f060724034e88Chung-yih Wang 84ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin @Override 85db3556078a75be0bd4a08195d90f060724034e88Chung-yih Wang protected void onMeasure(int widthSpec, int heightSpec) { 86db3556078a75be0bd4a08195d90f060724034e88Chung-yih Wang int previewWidth = MeasureSpec.getSize(widthSpec); 87db3556078a75be0bd4a08195d90f060724034e88Chung-yih Wang int previewHeight = MeasureSpec.getSize(heightSpec); 88db3556078a75be0bd4a08195d90f060724034e88Chung-yih Wang 89228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong if (!ApiHelper.HAS_SURFACE_TEXTURE) { 90228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong // Get the padding of the border background. 91228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong int hPadding = getPaddingLeft() + getPaddingRight(); 92228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong int vPadding = getPaddingTop() + getPaddingBottom(); 93228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong 94228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong // Resize the preview frame with correct aspect ratio. 95228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong previewWidth -= hPadding; 96228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong previewHeight -= vPadding; 97228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong 98228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong boolean widthLonger = previewWidth > previewHeight; 99228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong int longSide = (widthLonger ? previewWidth : previewHeight); 100228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong int shortSide = (widthLonger ? previewHeight : previewWidth); 101228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong if (longSide > shortSide * mAspectRatio) { 102228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong longSide = (int) ((double) shortSide * mAspectRatio); 103228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong } else { 104228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong shortSide = (int) ((double) longSide / mAspectRatio); 105228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong } 106228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong if (widthLonger) { 107228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong previewWidth = longSide; 108228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong previewHeight = shortSide; 109228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong } else { 110228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong previewWidth = shortSide; 111228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong previewHeight = longSide; 112228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong } 1136988d4e2ef8d14d8bf3ee81c8eb3175bbf1b88ecOwen Lin 114228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong // Add the padding of the border. 115228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong previewWidth += hPadding; 116228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong previewHeight += vPadding; 117228a7a0a902f3c023de797d0b06d033d8ec71502Angus Kong } 118940b813c57c6c6eb66f55d968c9cb2b28e79b24bWu-cheng Li 119db3556078a75be0bd4a08195d90f060724034e88Chung-yih Wang // Ask children to follow the new preview dimension. 120db3556078a75be0bd4a08195d90f060724034e88Chung-yih Wang super.onMeasure(MeasureSpec.makeMeasureSpec(previewWidth, MeasureSpec.EXACTLY), 121db3556078a75be0bd4a08195d90f060724034e88Chung-yih Wang MeasureSpec.makeMeasureSpec(previewHeight, MeasureSpec.EXACTLY)); 122ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin } 12314eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li 12414eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li public void setOnSizeChangedListener(OnSizeChangedListener listener) { 12514eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li mListener = listener; 12614eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li } 12714eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li 12814eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li @Override 12914eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li protected void onSizeChanged(int w, int h, int oldw, int oldh) { 13014eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li if (mListener != null) mListener.onSizeChanged(w, h); 13114eb2f01892cfe3945ecc4d431a7c134ded6ec17Wu-cheng Li } 132525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong 133525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong @Override 134525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong public void setOnLayoutChangeListener( 135525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong LayoutChangeNotifier.Listener listener) { 136525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong mLayoutChangeHelper.setOnLayoutChangeListener(listener); 137525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong } 138525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong 139525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong @Override 140525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong protected void onLayout(boolean changed, int l, int t, int r, int b) { 141525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong super.onLayout(changed, l, t, r, b); 142525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong mLayoutChangeHelper.onLayout(changed, l, t, r, b); 143525667ff4b93a577298085fe45660a2d15b0bd06Angus Kong } 144ffcca7403c9a364403357d3c76a3ff256c63c786Cheng-Ru Lin} 145