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