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 17package com.android.launcher2; 18 19import android.content.ComponentName; 20import android.content.Context; 21import android.content.res.ColorStateList; 22import android.content.res.Configuration; 23import android.content.res.Resources; 24import android.graphics.PorterDuff; 25import android.graphics.PorterDuffColorFilter; 26import android.graphics.drawable.TransitionDrawable; 27import android.util.AttributeSet; 28import android.view.View; 29import android.view.ViewGroup; 30 31import com.android.launcher.R; 32 33public class InfoDropTarget extends ButtonDropTarget { 34 35 private ColorStateList mOriginalTextColor; 36 private TransitionDrawable mDrawable; 37 private int mHoverColor = 0xFF0000FF; 38 39 public InfoDropTarget(Context context, AttributeSet attrs) { 40 this(context, attrs, 0); 41 } 42 43 public InfoDropTarget(Context context, AttributeSet attrs, int defStyle) { 44 super(context, attrs, defStyle); 45 } 46 47 @Override 48 protected void onFinishInflate() { 49 super.onFinishInflate(); 50 51 mOriginalTextColor = getTextColors(); 52 53 // Get the hover color 54 Resources r = getResources(); 55 mHoverColor = r.getColor(R.color.info_target_hover_tint); 56 mHoverPaint.setColorFilter(new PorterDuffColorFilter( 57 mHoverColor, PorterDuff.Mode.SRC_ATOP)); 58 mDrawable = (TransitionDrawable) getCompoundDrawables()[0]; 59 mDrawable.setCrossFadeEnabled(true); 60 61 // Remove the text in the Phone UI in landscape 62 int orientation = getResources().getConfiguration().orientation; 63 if (orientation == Configuration.ORIENTATION_LANDSCAPE) { 64 if (!LauncherApplication.isScreenLarge()) { 65 setText(""); 66 } 67 } 68 } 69 70 private boolean isAllAppsApplication(DragSource source, Object info) { 71 return (source instanceof AppsCustomizePagedView) && (info instanceof ApplicationInfo); 72 } 73 74 @Override 75 public boolean acceptDrop(DragObject d) { 76 // acceptDrop is called just before onDrop. We do the work here, rather than 77 // in onDrop, because it allows us to reject the drop (by returning false) 78 // so that the object being dragged isn't removed from the drag source. 79 ComponentName componentName = null; 80 if (d.dragInfo instanceof ApplicationInfo) { 81 componentName = ((ApplicationInfo) d.dragInfo).componentName; 82 } else if (d.dragInfo instanceof ShortcutInfo) { 83 componentName = ((ShortcutInfo) d.dragInfo).intent.getComponent(); 84 } 85 if (componentName != null) { 86 mLauncher.startApplicationDetailsActivity(componentName); 87 } 88 return false; 89 } 90 91 @Override 92 public void onDragStart(DragSource source, Object info, int dragAction) { 93 boolean isVisible = true; 94 95 // If we are dragging a widget or shortcut, hide the info target 96 if (!isAllAppsApplication(source, info)) { 97 isVisible = false; 98 } 99 100 mActive = isVisible; 101 mDrawable.resetTransition(); 102 setTextColor(mOriginalTextColor); 103 ((ViewGroup) getParent()).setVisibility(isVisible ? View.VISIBLE : View.GONE); 104 } 105 106 @Override 107 public void onDragEnd() { 108 super.onDragEnd(); 109 mActive = false; 110 } 111 112 public void onDragEnter(DragObject d) { 113 super.onDragEnter(d); 114 115 mDrawable.startTransition(mTransitionDuration); 116 setTextColor(mHoverColor); 117 } 118 119 public void onDragExit(DragObject d) { 120 super.onDragExit(d); 121 122 if (!d.dragComplete) { 123 mDrawable.resetTransition(); 124 setTextColor(mOriginalTextColor); 125 } 126 } 127} 128