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/*
* Copyright (C) 2008 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.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Paint;
import android.graphics.PorterDuffColorFilter;
import android.graphics.PorterDuff;
import android.os.Vibrator;
import android.os.SystemClock;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.KeyEvent;
import android.view.inputmethod.InputMethodManager;
import android.widget.FrameLayout;
/**
* A ViewGroup that coordinated dragging across its dscendants
*/
public class DragLayer extends FrameLayout {
private static final String TAG = "Launcher.DragLayer";
private static final int DRAG = 1;
private static final int SWIPE = 2;
private static final int BOTH = DRAG | SWIPE;
DragController mDragController;
SwipeController mSwipeController;
private int mAllowed = BOTH;
/**
* Used to create a new DragLayer from XML.
*
* @param context The application's context.
* @param attrs The attribtues set containing the Workspace's customization values.
*/
public DragLayer(Context context, AttributeSet attrs) {
super(context, attrs);
}
public void setDragController(DragController controller) {
mDragController = controller;
}
public void setSwipeController(SwipeController controller) {
mSwipeController = controller;
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
return mDragController.dispatchKeyEvent(event) || super.dispatchKeyEvent(event);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
boolean result = false;
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
mAllowed = BOTH;
}
if ((mAllowed & DRAG) != 0) {
result = mDragController.onInterceptTouchEvent(ev);
if (result) {
mAllowed = DRAG;
}
}
if ((mAllowed & SWIPE) != 0) {
result = mSwipeController.onInterceptTouchEvent(ev);
if (result) {
mAllowed = SWIPE;
}
}
return result;
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
boolean result = false;
if ((mAllowed & DRAG) != 0) {
result = mDragController.onTouchEvent(ev);
if (result) {
mAllowed = DRAG;
}
}
if ((mAllowed & SWIPE) != 0) {
result = mSwipeController.onTouchEvent(ev);
if (result) {
mAllowed = SWIPE;
}
}
return result;
}
}
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