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
17package com.android.camera.ui;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.widget.ImageView;
22
23/**
24 * A @{code ImageView} which change the opacity of the icon if disabled.
25 */
26public 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