1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui.statusbar.phone; 18 19 import android.graphics.Canvas; 20 import android.graphics.Point; 21 import android.graphics.Rect; 22 import android.graphics.drawable.Drawable; 23 import android.view.View; 24 import android.widget.ImageView; 25 26 /** Creates a scaled-up version of an app icon for dragging. */ 27 class AppIconDragShadowBuilder extends View.DragShadowBuilder { 28 private final static int ICON_SCALE = 2; 29 final Drawable mDrawable; 30 final int mIconSize; // Height and width in device-pixels. 31 32 public AppIconDragShadowBuilder(ImageView icon) { 33 mDrawable = icon.getDrawable(); 34 // The Drawable may not be the same size as the ImageView, so use the ImageView size. 35 // The ImageView is not square because it has additional left and right padding to create 36 // a wider drop target, so use the height to create a square drag shadow. 37 mIconSize = icon.getHeight() * ICON_SCALE; 38 } 39 40 @Override 41 public void onProvideShadowMetrics(Point size, Point touch) { 42 size.set(mIconSize, mIconSize); 43 // Shift the drag shadow up slightly because the apps are at the bottom edge of the 44 // screen. 45 touch.set(mIconSize / 2, mIconSize * 2 / 3); 46 } 47 48 @Override 49 public void onDrawShadow(Canvas canvas) { 50 // The Drawable's native bounds may be different than the source ImageView. Force it 51 // to the correct size. 52 Rect oldBounds = mDrawable.copyBounds(); 53 mDrawable.setBounds(0, 0, mIconSize, mIconSize); 54 mDrawable.draw(canvas); 55 mDrawable.setBounds(oldBounds); 56 } 57 } 58
