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 com.android.camera.R; 20 21 import android.content.Context; 22 import android.util.AttributeSet; 23 import android.widget.ImageView; 24 25 /** 26 * A @{code ImageView} which change the opacity of the icon if disabled. 27 */ 28 public class TwoStateImageView extends ImageView { 29 private final float DISABLED_ALPHA = 0.4f; 30 private boolean mFilterEnabled = true; 31 TwoStateImageView(Context context, AttributeSet attrs)32 public TwoStateImageView(Context context, AttributeSet attrs) { 33 super(context, attrs); 34 } 35 TwoStateImageView(Context context)36 public TwoStateImageView(Context context) { 37 this(context, null); 38 } 39 40 @Override setEnabled(boolean enabled)41 public void setEnabled(boolean enabled) { 42 super.setEnabled(enabled); 43 if (mFilterEnabled) { 44 if (enabled) { 45 setAlpha(1.0f); 46 } else { 47 setAlpha(DISABLED_ALPHA); 48 } 49 } 50 } 51 enableFilter(boolean enabled)52 public void enableFilter(boolean enabled) { 53 mFilterEnabled = enabled; 54 } 55 } 56