| /* |
| * Copyright (C) 2015 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.systemui.statusbar.phone; |
| |
| import android.graphics.Canvas; |
| import android.graphics.Point; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.view.View; |
| import android.widget.ImageView; |
| |
| /** Creates a scaled-up version of an app icon for dragging. */ |
| class AppIconDragShadowBuilder extends View.DragShadowBuilder { |
| private final static int ICON_SCALE = 2; |
| final Drawable mDrawable; |
| final int mIconSize; // Height and width in device-pixels. |
| |
| public AppIconDragShadowBuilder(ImageView icon) { |
| mDrawable = icon.getDrawable(); |
| // The Drawable may not be the same size as the ImageView, so use the ImageView size. |
| // The ImageView is not square because it has additional left and right padding to create |
| // a wider drop target, so use the height to create a square drag shadow. |
| mIconSize = icon.getHeight() * ICON_SCALE; |
| } |
| |
| @Override |
| public void onProvideShadowMetrics(Point size, Point touch) { |
| size.set(mIconSize, mIconSize); |
| // Shift the drag shadow up slightly because the apps are at the bottom edge of the |
| // screen. |
| touch.set(mIconSize / 2, mIconSize * 2 / 3); |
| } |
| |
| @Override |
| public void onDrawShadow(Canvas canvas) { |
| // The Drawable's native bounds may be different than the source ImageView. Force it |
| // to the correct size. |
| Rect oldBounds = mDrawable.copyBounds(); |
| mDrawable.setBounds(0, 0, mIconSize, mIconSize); |
| mDrawable.draw(canvas); |
| mDrawable.setBounds(oldBounds); |
| } |
| } |