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.launcher2; 18 19 import android.content.Context; 20 import android.content.res.TypedArray; 21 import android.graphics.Canvas; 22 import android.graphics.drawable.Drawable; 23 import android.graphics.drawable.StateListDrawable; 24 import android.util.AttributeSet; 25 import android.widget.ImageView; 26 import android.widget.LinearLayout; 27 28 import com.android.launcher.R; 29 30 public class HolographicLinearLayout extends LinearLayout { 31 32 private final HolographicViewHelper mHolographicHelper; 33 private ImageView mImageView; 34 private int mImageViewId; 35 36 public HolographicLinearLayout(Context context) { 37 this(context, null); 38 } 39 40 public HolographicLinearLayout(Context context, AttributeSet attrs) { 41 this(context, attrs, 0); 42 } 43 44 public HolographicLinearLayout(Context context, AttributeSet attrs, int defStyle) { 45 super(context, attrs, defStyle); 46 47 TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.HolographicLinearLayout, 48 defStyle, 0); 49 mImageViewId = a.getResourceId(R.styleable.HolographicLinearLayout_sourceImageViewId, -1); 50 a.recycle(); 51 52 setWillNotDraw(false); 53 mHolographicHelper = new HolographicViewHelper(context); 54 } 55 56 @Override 57 protected void drawableStateChanged() { 58 super.drawableStateChanged(); 59 60 if (mImageView != null) { 61 Drawable d = mImageView.getDrawable(); 62 if (d instanceof StateListDrawable) { 63 StateListDrawable sld = (StateListDrawable) d; 64 sld.setState(getDrawableState()); 65 } 66 } 67 } 68 69 void invalidatePressedFocusedStates() { 70 mHolographicHelper.invalidatePressedFocusedStates(mImageView); 71 invalidate(); 72 } 73 74 @Override 75 protected void onDraw(Canvas canvas) { 76 super.onDraw(canvas); 77 78 // One time call to generate the pressed/focused state -- must be called after 79 // measure/layout 80 if (mImageView == null) { 81 mImageView = (ImageView) findViewById(mImageViewId); 82 } 83 mHolographicHelper.generatePressedFocusedStates(mImageView); 84 } 85 } 86
