Launcher2 is now Launcher3.

Changes include
  - moving from com.android.launcher{,2} to
    com.android.launcher3
  - removing wallpapers
  - new temporary icon

Change-Id: I1eabd06059e94a8f3bdf6b620777bd1d2b7c212b

src/com/android/launcher3/ButtonDropTarget.java

@@ -0,0 +1,166 @@
+/*
+ * 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.launcher3;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.PointF;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.TextView;
+
+import com.android.launcher3.R;
+
+
+/**
+ * Implements a DropTarget.
+ */
+public class ButtonDropTarget extends TextView implements DropTarget, DragController.DragListener {
+
+    protected final int mTransitionDuration;
+
+    protected Launcher mLauncher;
+    private int mBottomDragPadding;
+    protected TextView mText;
+    protected SearchDropTargetBar mSearchDropTargetBar;
+
+    /** Whether this drop target is active for the current drag */
+    protected boolean mActive;
+
+    /** The paint applied to the drag view on hover */
+    protected int mHoverColor = 0;
+
+    public ButtonDropTarget(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public ButtonDropTarget(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+
+        Resources r = getResources();
+        mTransitionDuration = r.getInteger(R.integer.config_dropTargetBgTransitionDuration);
+        mBottomDragPadding = r.getDimensionPixelSize(R.dimen.drop_target_drag_padding);
+    }
+
+    void setLauncher(Launcher launcher) {
+        mLauncher = launcher;
+    }
+
+    public boolean acceptDrop(DragObject d) {
+        return false;
+    }
+
+    public void setSearchDropTargetBar(SearchDropTargetBar searchDropTargetBar) {
+        mSearchDropTargetBar = searchDropTargetBar;
+    }
+
+    protected Drawable getCurrentDrawable() {
+        Drawable[] drawables = getCompoundDrawablesRelative();
+        for (int i = 0; i < drawables.length; ++i) {
+            if (drawables[i] != null) {
+                return drawables[i];
+            }
+        }
+        return null;
+    }
+
+    public void onDrop(DragObject d) {
+    }
+
+    public void onFlingToDelete(DragObject d, int x, int y, PointF vec) {
+        // Do nothing
+    }
+
+    public void onDragEnter(DragObject d) {
+        d.dragView.setColor(mHoverColor);
+    }
+
+    public void onDragOver(DragObject d) {
+        // Do nothing
+    }
+
+    public void onDragExit(DragObject d) {
+        d.dragView.setColor(0);
+    }
+
+    public void onDragStart(DragSource source, Object info, int dragAction) {
+        // Do nothing
+    }
+
+    public boolean isDropEnabled() {
+        return mActive;
+    }
+
+    public void onDragEnd() {
+        // Do nothing
+    }
+
+    @Override
+    public void getHitRect(android.graphics.Rect outRect) {
+        super.getHitRect(outRect);
+        outRect.bottom += mBottomDragPadding;
+    }
+
+    private boolean isRtl() {
+        return (getLayoutDirection() == View.LAYOUT_DIRECTION_RTL);
+    }
+
+    Rect getIconRect(int viewWidth, int viewHeight, int drawableWidth, int drawableHeight) {
+        DragLayer dragLayer = mLauncher.getDragLayer();
+
+        // Find the rect to animate to (the view is center aligned)
+        Rect to = new Rect();
+        dragLayer.getViewRectRelativeToSelf(this, to);
+
+        final int width = drawableWidth;
+        final int height = drawableHeight;
+
+        final int left;
+        final int right;
+
+        if (isRtl()) {
+            right = to.right - getPaddingRight();
+            left = right - width;
+        } else {
+            left = to.left + getPaddingLeft();
+            right = left + width;
+        }
+
+        final int top = to.top + (getMeasuredHeight() - height) / 2;
+        final int bottom = top +  height;
+
+        to.set(left, top, right, bottom);
+
+        // Center the destination rect about the trash icon
+        final int xOffset = (int) -(viewWidth - width) / 2;
+        final int yOffset = (int) -(viewHeight - height) / 2;
+        to.offset(xOffset, yOffset);
+
+        return to;
+    }
+
+    @Override
+    public DropTarget getDropTargetDelegate(DragObject d) {
+        return null;
+    }
+
+    public void getLocationInDragLayer(int[] loc) {
+        mLauncher.getDragLayer().getLocationInDragLayer(this, loc);
+    }
+}