| /* |
| * Copyright (C) 2014 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.wallpaperpicker; |
| |
| import android.content.Context; |
| import android.util.AttributeSet; |
| import android.widget.Button; |
| |
| /** |
| * A Button which becomes translucent when it is disabled |
| */ |
| public class AlphaDisableableButton extends Button { |
| public static float DISABLED_ALPHA_VALUE = 0.4f; |
| public AlphaDisableableButton(Context context) { |
| this(context, null); |
| } |
| |
| public AlphaDisableableButton(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public AlphaDisableableButton(Context context, AttributeSet attrs, int defStyleAttr) { |
| super(context, attrs, defStyleAttr); |
| setLayerType(LAYER_TYPE_HARDWARE, null); |
| } |
| |
| @Override |
| public void setEnabled(boolean enabled) { |
| super.setEnabled(enabled); |
| if(enabled) { |
| setAlpha(1.0f); |
| } else { |
| setAlpha(DISABLED_ALPHA_VALUE); |
| } |
| } |
| } |