1 /* 2 * Copyright (C) 2010 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.graphics.Bitmap; 21 import android.util.AttributeSet; 22 import android.widget.TextView; 23 24 /** 25 * An icon on a PagedView, specifically for items in the launcher's paged view (with compound 26 * drawables on the top). 27 */ 28 public class PagedViewIcon extends TextView { 29 /** A simple callback interface to allow a PagedViewIcon to notify when it has been pressed */ 30 public static interface PressedCallback { iconPressed(PagedViewIcon icon)31 void iconPressed(PagedViewIcon icon); 32 } 33 34 @SuppressWarnings("unused") 35 private static final String TAG = "PagedViewIcon"; 36 private static final float PRESS_ALPHA = 0.4f; 37 38 private PagedViewIcon.PressedCallback mPressedCallback; 39 private boolean mLockDrawableState = false; 40 41 private Bitmap mIcon; 42 PagedViewIcon(Context context)43 public PagedViewIcon(Context context) { 44 this(context, null); 45 } 46 PagedViewIcon(Context context, AttributeSet attrs)47 public PagedViewIcon(Context context, AttributeSet attrs) { 48 this(context, attrs, 0); 49 } 50 PagedViewIcon(Context context, AttributeSet attrs, int defStyle)51 public PagedViewIcon(Context context, AttributeSet attrs, int defStyle) { 52 super(context, attrs, defStyle); 53 } 54 applyFromApplicationInfo(ApplicationInfo info, boolean scaleUp, PagedViewIcon.PressedCallback cb)55 public void applyFromApplicationInfo(ApplicationInfo info, boolean scaleUp, 56 PagedViewIcon.PressedCallback cb) { 57 mIcon = info.iconBitmap; 58 mPressedCallback = cb; 59 setCompoundDrawablesWithIntrinsicBounds(null, new FastBitmapDrawable(mIcon), null, null); 60 setText(info.title); 61 setTag(info); 62 } 63 lockDrawableState()64 public void lockDrawableState() { 65 mLockDrawableState = true; 66 } 67 resetDrawableState()68 public void resetDrawableState() { 69 mLockDrawableState = false; 70 post(new Runnable() { 71 @Override 72 public void run() { 73 refreshDrawableState(); 74 } 75 }); 76 } 77 drawableStateChanged()78 protected void drawableStateChanged() { 79 super.drawableStateChanged(); 80 81 // We keep in the pressed state until resetDrawableState() is called to reset the press 82 // feedback 83 if (isPressed()) { 84 setAlpha(PRESS_ALPHA); 85 if (mPressedCallback != null) { 86 mPressedCallback.iconPressed(this); 87 } 88 } else if (!mLockDrawableState) { 89 setAlpha(1f); 90 } 91 } 92 } 93