| /* |
| * Copyright (C) 2010 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.gallery3d.photoeditor; |
| |
| import android.content.Context; |
| import android.util.AttributeSet; |
| import android.widget.ImageButton; |
| |
| /** |
| * Image buttons used in Action-bar and Effects-menu that can be grayed out when set disabled. |
| * (Text buttons are automatically grayed out when disabled; however, image buttons are not.) |
| */ |
| public class ImageActionButton extends ImageButton { |
| |
| private static final float ENABLED_ALPHA = 1; |
| private static final float DISABLED_ALPHA = 0.28f; |
| |
| public ImageActionButton(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| @Override |
| public void setEnabled(boolean enabled) { |
| super.setEnabled(enabled); |
| setAlpha(enabled ? ENABLED_ALPHA : DISABLED_ALPHA); |
| } |
| } |