1 /* 2 * Copyright (C) 2010 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.content.Context; 20 import android.util.Log; 21 22 import com.android.camera.R; 23 import com.android.camera.ui.ZoomControllerListener; 24 25 import java.text.DecimalFormat; 26 27 class ZoomIndicator extends AbstractIndicator { 28 private static final DecimalFormat sZoomFormat = new DecimalFormat("#.#x"); 29 private static final float FONT_SIZE = 18; 30 private static final int FONT_COLOR = 0xA8FFFFFF; 31 private static final int COLOR_OPTION_HEADER = 0xFF2B2B2B; 32 33 protected static final String TAG = "ZoomIndicator"; 34 35 private final float mFontSize; 36 37 private ZoomController mZoomController; 38 private LinearLayout mPopupContent; 39 private ZoomControllerListener mZoomListener; 40 private int mZoomIndex = 0; 41 private int mDrawIndex = -1; 42 private float mZoomRatios[]; 43 44 private StringTexture mTitle; 45 46 public ZoomIndicator(Context context) { 47 super(context); 48 mFontSize = GLRootView.dpToPixel(context, FONT_SIZE); 49 } 50 51 @Override 52 protected void onMeasure(int widthSpec, int heightSpec) { 53 int maxWidth = 0; 54 int maxHeight = 0; 55 int n = mZoomRatios == null ? 0: mZoomRatios.length; 56 for (int i = 0; i < n; ++i) { 57 float value = mZoomRatios[i]; 58 BitmapTexture tex = StringTexture.newInstance( 59 sZoomFormat.format(value), mFontSize, FONT_COLOR); 60 if (maxWidth < tex.getWidth()) maxWidth = tex.getWidth(); 61 if (maxHeight < tex.getHeight()) maxHeight = tex.getHeight(); 62 } 63 new MeasureHelper(this) 64 .setPreferredContentSize(maxWidth, maxHeight) 65 .measure(widthSpec, heightSpec); 66 } 67 68 @Override 69 protected BitmapTexture getIcon() { 70 if (mDrawIndex != mZoomIndex) { 71 mDrawIndex = mZoomIndex; 72 if (mTitle != null) mTitle.deleteFromGL(); 73 float value = mZoomRatios[mZoomIndex]; 74 mTitle = StringTexture.newInstance( 75 sZoomFormat.format(value), mFontSize, FONT_COLOR); 76 } 77 return mTitle; 78 } 79 80 @Override 81 public GLView getPopupContent() { 82 if (mZoomController == null) { 83 Context context = getGLRootView().getContext(); 84 mZoomController = new ZoomController(context); 85 mZoomController.setAvailableZoomRatios(mZoomRatios); 86 mZoomController.setPaddings(15, 6, 15, 6); 87 88 mPopupContent = new LinearLayout(); 89 GLOptionHeader header = new GLOptionHeader(context, 90 context.getString(R.string.zoom_control_title)); 91 header.setBackground(new ColorTexture(COLOR_OPTION_HEADER)); 92 header.setPaddings(6, 3, 6, 3); 93 mPopupContent.addComponent(header); 94 mPopupContent.addComponent(mZoomController); 95 96 mZoomController.setZoomListener(new MyZoomListener()); 97 mZoomController.setZoomIndex(mZoomIndex); 98 } 99 return mPopupContent; 100 } 101 102 @Override 103 public void overrideSettings(String key, String settings) { 104 // do nothing 105 } 106 107 @Override 108 public void reloadPreferences() { 109 // do nothing 110 } 111 112 public void setZoomRatios(float[] ratios) { 113 mZoomRatios = ratios; 114 mDrawIndex = -1; 115 invalidate(); 116 } 117 118 private class MyZoomListener implements ZoomControllerListener { 119 public void onZoomChanged(int index, float value, boolean isMoving) { 120 if (mZoomListener != null) { 121 mZoomListener.onZoomChanged(index, value, isMoving); 122 } 123 if (mZoomIndex != index) onZoomIndexChanged(index); 124 } 125 } 126 127 private void onZoomIndexChanged(int index) { 128 if (mZoomIndex == index) return; 129 mZoomIndex = index; 130 invalidate(); 131 } 132 133 public void setZoomListener(ZoomControllerListener listener) { 134 mZoomListener = listener; 135 } 136 137 public void setZoomIndex(int index) { 138 if (mZoomIndex == index) return; 139 if (mZoomController != null) { 140 mZoomController.setZoomIndex(index); 141 } else { 142 onZoomIndexChanged(index); 143 } 144 } 145 } 146