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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 com.android.launcher.R;
import android.content.Context;
import android.graphics.Bitmap;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.ImageView;
/**
* A ViewGroup that coordinates dragging across its descendants
*/
public class DragLayer extends FrameLayout {
private DragController mDragController;
private int[] mTmpXY = new int[2];
/**
* Used to create a new DragLayer from XML.
*
* @param context The application's context.
* @param attrs The attributes set containing the Workspace's customization values.
*/
public DragLayer(Context context, AttributeSet attrs) {
super(context, attrs);
// Disable multitouch across the workspace/all apps/customize tray
setMotionEventSplittingEnabled(false);
}
public void setDragController(DragController controller) {
mDragController = controller;
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
return mDragController.dispatchKeyEvent(event) || super.dispatchKeyEvent(event);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
// Here we need to detect if any touch event has occured which doesn't result
// in resizing a widget. In this case, we dismiss any visible resize frames.
post(new Runnable() {
public void run() {
Workspace w = (Workspace) findViewById(R.id.workspace);
CellLayout currentPage = (CellLayout) w.getChildAt(w.getCurrentPage());
if (!currentPage.getChildrenLayout().isWidgetBeingResized()) {
currentPage.getChildrenLayout().clearAllResizeFrames();
}
}
});
return mDragController.onInterceptTouchEvent(ev);
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
return mDragController.onTouchEvent(ev);
}
@Override
public boolean dispatchUnhandledMove(View focused, int direction) {
return mDragController.dispatchUnhandledMove(focused, direction);
}
public View createDragView(Bitmap b, int xPos, int yPos) {
ImageView imageView = new ImageView(mContext);
imageView.setImageBitmap(b);
imageView.setX(xPos);
imageView.setY(yPos);
addView(imageView, b.getWidth(), b.getHeight());
return imageView;
}
public View createDragView(View v) {
v.getLocationOnScreen(mTmpXY);
return createDragView(mDragController.getViewBitmap(v), mTmpXY[0], mTmpXY[1]);
}
}
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