| /* |
| * 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.launcher2; |
| |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.graphics.Paint; |
| import android.graphics.PorterDuff; |
| import android.graphics.PorterDuffColorFilter; |
| import android.graphics.Rect; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.widget.ImageView; |
| |
| import com.android.launcher.R; |
| |
| /** |
| * Implements a DropTarget which allows applications to be dropped on it, |
| * in order to launch the application info for that app. |
| */ |
| public class IconDropTarget extends ImageView implements DropTarget, DragController.DragListener { |
| protected Launcher mLauncher; |
| |
| /** |
| * If true, this View responsible for managing its own visibility, and that of its handle. |
| * This is generally the case, but it will be set to false when this is part of the |
| * Contextual Action Bar. |
| */ |
| protected boolean mDragAndDropEnabled; |
| |
| /** Whether this drop target is active for the current drag */ |
| protected boolean mActive; |
| |
| /** The view that this view should appear in the place of. */ |
| protected View mHandle = null; |
| |
| /** The paint applied to the drag view on hover */ |
| protected final Paint mHoverPaint = new Paint(); |
| |
| /** Drag zone padding */ |
| protected int mInnerDragPadding; |
| protected int mOuterDragPadding; |
| |
| public IconDropTarget(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public IconDropTarget(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| mDragAndDropEnabled = true; |
| } |
| |
| void setLauncher(Launcher launcher) { |
| mLauncher = launcher; |
| } |
| |
| void setHandle(View view) { |
| mHandle = view; |
| } |
| |
| void setDragAndDropEnabled(boolean enabled) { |
| mDragAndDropEnabled = enabled; |
| } |
| |
| public boolean acceptDrop(DragSource source, int x, int y, int xOffset, int yOffset, |
| DragView dragView, Object dragInfo) { |
| return false; |
| } |
| |
| public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, |
| DragView dragView, Object dragInfo) { |
| // Do nothing |
| } |
| |
| public void onDragEnter(DragSource source, int x, int y, int xOffset, int yOffset, |
| DragView dragView, Object dragInfo) { |
| if (mDragAndDropEnabled) { |
| dragView.setPaint(mHoverPaint); |
| } |
| } |
| |
| public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, |
| DragView dragView, Object dragInfo) { |
| // Do nothing |
| } |
| |
| public void onDragExit(DragSource source, int x, int y, int xOffset, int yOffset, |
| DragView dragView, Object dragInfo) { |
| if (mDragAndDropEnabled) { |
| dragView.setPaint(null); |
| } |
| } |
| |
| public void onDragStart(DragSource source, Object info, int dragAction) { |
| // Do nothing |
| } |
| |
| public boolean isDropEnabled() { |
| return mDragAndDropEnabled && mActive; |
| } |
| |
| public void onDragEnd() { |
| // Do nothing |
| } |
| |
| @Override |
| public void getHitRect(Rect outRect) { |
| super.getHitRect(outRect); |
| if (LauncherApplication.isScreenXLarge()) { |
| outRect.top -= mOuterDragPadding; |
| outRect.left -= mInnerDragPadding; |
| outRect.bottom += mOuterDragPadding; |
| outRect.right += mOuterDragPadding; |
| } |
| } |
| |
| @Override |
| public DropTarget getDropTargetDelegate(DragSource source, int x, int y, int xOffset, |
| int yOffset, DragView dragView, Object dragInfo) { |
| return null; |
| } |
| } |