Move the drag thing into its own window that goes around on top of everything else.
diff --git a/src/com/android/launcher2/DragView.java b/src/com/android/launcher2/DragView.java
new file mode 100644
index 0000000..911a6ce
--- /dev/null
+++ b/src/com/android/launcher2/DragView.java
@@ -0,0 +1,186 @@
+/*
+ * 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.content.res.TypedArray;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.graphics.PixelFormat;
+import android.graphics.Point;
+import android.os.IBinder;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.Gravity;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.KeyEvent;
+import android.view.WindowManager;
+import android.view.WindowManagerImpl;
+
+public class DragView extends View implements TweenCallback {
+ // Number of pixels to add to the dragged item for scaling. Should be even for pixel alignment.
+ private static final int DRAG_SCALE = 24;
+
+ private Bitmap mBitmap;
+ private Paint mPaint;
+ private int mRegistrationX;
+ private int mRegistrationY;
+
+ SymmetricalLinearTween mTween;
+ private float mScale;
+ private float mAnimationScale = 1.0f;
+
+ private WindowManager.LayoutParams mLayoutParams;
+ private WindowManager mWindowManager;
+
+ /**
+ * Construct the drag view.
+ * <p>
+ * The registration point is the point inside our view that the touch events should
+ * be centered upon.
+ *
+ * @param context A context
+ * @param bitmap The view that we're dragging around. We scale it up when we draw it.
+ * @param registrationX The x coordinate of the registration point.
+ * @param registrationY The y coordinate of the registration point.
+ */
+ public DragView(Context context, Bitmap bitmap, int registrationX, int registrationY) {
+ super(context);
+
+ mWindowManager = WindowManagerImpl.getDefault();
+
+ mTween = new SymmetricalLinearTween(false, 110 /*ms duration*/, this);
+
+ int width = bitmap.getWidth();
+ int height = bitmap.getHeight();
+
+ Matrix scale = new Matrix();
+ float scaleFactor = width;
+ scaleFactor = mScale = (scaleFactor + DRAG_SCALE) / scaleFactor;
+ scale.setScale(scaleFactor, scaleFactor);
+
+ mBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, scale, true);
+
+ // The point in our scaled bitmap that the touch events are located
+ mRegistrationX = registrationX + (DRAG_SCALE / 2);
+ mRegistrationY = registrationY + (DRAG_SCALE / 2);
+ }
+
+ @Override
+ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+ int widthSize = resolveSize(mBitmap.getWidth(), widthMeasureSpec);
+ int heightSize = resolveSize(mBitmap.getHeight(), heightMeasureSpec);
+ setMeasuredDimension(widthSize, heightSize);
+ }
+
+ @Override
+ protected void onDraw(Canvas canvas) {
+ if (false) {
+ // for debugging
+ Paint p = new Paint();
+ p.setStyle(Paint.Style.FILL);
+ p.setColor(0xaaffffff);
+ canvas.drawRect(0, 0, getWidth(), getHeight(), p);
+ }
+ float scale = mAnimationScale;
+ if (scale < 0.999f) { // allow for some float error
+ float width = mBitmap.getWidth();
+ float offset = (width-(width*scale))/2;
+ canvas.translate(offset, offset);
+ canvas.scale(scale, scale);
+ }
+ canvas.drawBitmap(mBitmap, 0.0f, 0.0f, mPaint);
+ }
+
+ @Override
+ protected void onDetachedFromWindow() {
+ super.onDetachedFromWindow();
+ mBitmap.recycle();
+ }
+
+ public void onTweenValueChanged(float value, float oldValue) {
+ mAnimationScale = (1.0f+((mScale-1.0f)*value))/mScale;
+ invalidate();
+ }
+
+ public void onTweenStarted() {
+ }
+
+ public void onTweenFinished() {
+ }
+
+ public void setPaint(Paint paint) {
+ mPaint = paint;
+ invalidate();
+ }
+
+ /**
+ * Create a window containing this view and show it.
+ *
+ * @param windowToken obtained from v.getWindowToken() from one of your views
+ * @param touchX the x coordinate the user touched in screen coordinates
+ * @param touchY the y coordinate the user touched in screen coordinates
+ */
+ public void show(IBinder windowToken, int touchX, int touchY) {
+ WindowManager.LayoutParams lp;
+ int pixelFormat;
+
+ pixelFormat = PixelFormat.TRANSLUCENT;
+
+ lp = new WindowManager.LayoutParams(
+ ViewGroup.LayoutParams.WRAP_CONTENT,
+ ViewGroup.LayoutParams.WRAP_CONTENT,
+ touchX-mRegistrationX, touchY-mRegistrationY,
+ WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL,
+ WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
+ | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
+ /*| WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM*/,
+ pixelFormat);
+// lp.token = mStatusBarView.getWindowToken();
+ lp.gravity = Gravity.LEFT | Gravity.TOP;
+ lp.token = windowToken;
+ lp.setTitle("DragView");
+ mLayoutParams = lp;
+
+ mWindowManager.addView(this, lp);
+
+ mAnimationScale = 1.0f/mScale;
+ mTween.start(true);
+ }
+
+ /**
+ * Move the window containing this view.
+ *
+ * @param touchX the x coordinate the user touched in screen coordinates
+ * @param touchY the y coordinate the user touched in screen coordinates
+ */
+ void move(int touchX, int touchY) {
+ WindowManager.LayoutParams lp = mLayoutParams;
+ lp.x = touchX - mRegistrationX;
+ lp.y = touchY - mRegistrationY;
+ mWindowManager.updateViewLayout(this, lp);
+ }
+
+ void remove() {
+ mWindowManager.removeView(this);
+ }
+}
+