1 /* 2 * Copyright (C) 2011 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.ui; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.content.pm.ActivityInfo; 22 import android.util.AttributeSet; 23 import android.util.Log; 24 import android.widget.RelativeLayout; 25 26 /** 27 * A layout which handles the the width of the control panel, which contains 28 * the shutter button, thumbnail, front/back camera picker, and mode picker. 29 * The purpose of this is to have a consistent width of control panel in camera, 30 * camcorder, and panorama modes. 31 */ 32 public class ControlPanelLayout extends RelativeLayout { 33 private static final String TAG = "ControlPanelLayout"; 34 ControlPanelLayout(Context context, AttributeSet attrs)35 public ControlPanelLayout(Context context, AttributeSet attrs) { 36 super(context, attrs); 37 } 38 39 @Override onMeasure(int widthSpec, int heightSpec)40 protected void onMeasure(int widthSpec, int heightSpec) { 41 int widthSpecSize = MeasureSpec.getSize(widthSpec); 42 int heightSpecSize = MeasureSpec.getSize(heightSpec); 43 int measuredSize = 0; 44 int mode, longSideSize, shortSideSize, specSize; 45 46 boolean isLandscape = (((Activity) getContext()).getRequestedOrientation() 47 == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); 48 49 if (isLandscape) { 50 mode = MeasureSpec.getMode(widthSpec); 51 longSideSize = widthSpecSize; 52 shortSideSize = heightSpecSize; 53 specSize = widthSpecSize; 54 } else { 55 mode = MeasureSpec.getMode(heightSpec); 56 longSideSize = heightSpecSize; 57 shortSideSize = widthSpecSize; 58 specSize = heightSpecSize; 59 } 60 61 if (widthSpecSize > 0 && heightSpecSize > 0 && mode == MeasureSpec.AT_MOST) { 62 // Calculate how big 4:3 preview occupies. Then deduct it from the 63 // width of the parent. 64 measuredSize = (int) (longSideSize - shortSideSize / 3.0 * 4.0); 65 } else { 66 Log.e(TAG, "layout_xxx of ControlPanelLayout should be wrap_content"); 67 } 68 69 // The size cannot be smaller than minimum constraint. 70 int minimumSize = (isLandscape) ? getMinimumWidth() : getMinimumHeight(); 71 if (measuredSize < minimumSize) { 72 measuredSize = minimumSize; 73 } 74 75 // The size cannot be bigger than the constraint. 76 if (mode == MeasureSpec.AT_MOST && measuredSize > specSize) { 77 measuredSize = specSize; 78 } 79 80 if (isLandscape) { 81 widthSpec = MeasureSpec.makeMeasureSpec(measuredSize, MeasureSpec.EXACTLY); 82 } else { 83 heightSpec = MeasureSpec.makeMeasureSpec(measuredSize, MeasureSpec.EXACTLY); 84 } 85 86 super.onMeasure(widthSpec, heightSpec); 87 } 88 } 89