/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.camera.ui;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.ImageView;
/**
* A @{code ImageView} which change the opacity of the icon if disabled.
*/
public class TwoStateImageView extends ImageView {
private static final int ENABLED_ALPHA = 255;
private static final int DISABLED_ALPHA = (int) (255 * 0.4);
private boolean mFilterEnabled = true;
public TwoStateImageView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public TwoStateImageView(Context context) {
this(context, null);
}
@SuppressWarnings("deprecation")
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
if (mFilterEnabled) {
if (enabled) {
setAlpha(ENABLED_ALPHA);
} else {
setAlpha(DISABLED_ALPHA);
}
}
}
public void enableFilter(boolean enabled) {
mFilterEnabled = enabled;
}
}