1 /* 2 * Copyright (C) 2016 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.launcher3.shortcuts; 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 25 import com.android.launcher3.Utilities; 26 import com.android.launcher3.graphics.DragPreviewProvider; 27 import com.android.launcher3.icons.BitmapRenderer; 28 import com.android.launcher3.icons.FastBitmapDrawable; 29 import com.android.launcher3.views.ActivityContext; 30 31 /** 32 * Extension of {@link DragPreviewProvider} which generates bitmaps scaled to the default icon size. 33 */ 34 public class ShortcutDragPreviewProvider extends DragPreviewProvider { 35 36 private final Point mPositionShift; 37 ShortcutDragPreviewProvider(View icon, Point shift)38 public ShortcutDragPreviewProvider(View icon, Point shift) { 39 super(icon); 40 mPositionShift = shift; 41 } 42 43 @Override createDrawable()44 public Drawable createDrawable() { 45 int size = ActivityContext.lookupContext(mView.getContext()) 46 .getDeviceProfile().iconSizePx; 47 return new FastBitmapDrawable( 48 BitmapRenderer.createHardwareBitmap( 49 size + blurSizeOutline, 50 size + blurSizeOutline, 51 (c) -> drawDragViewOnBackground(c, size))); 52 } 53 drawDragViewOnBackground(Canvas canvas, float size)54 private void drawDragViewOnBackground(Canvas canvas, float size) { 55 Drawable d = mView.getBackground(); 56 Rect bounds = getDrawableBounds(d); 57 58 canvas.translate(blurSizeOutline / 2, blurSizeOutline / 2); 59 canvas.scale(size / bounds.width(), size / bounds.height(), 0, 0); 60 canvas.translate(bounds.left, bounds.top); 61 d.draw(canvas); 62 } 63 64 @Override getScaleAndPosition(Drawable preview, int[] outPos)65 public float getScaleAndPosition(Drawable preview, int[] outPos) { 66 ActivityContext context = ActivityContext.lookupContext(mView.getContext()); 67 int iconSize = getDrawableBounds(mView.getBackground()).width(); 68 float scale = context.getDragLayer().getLocationInDragLayer(mView, outPos); 69 70 int iconLeft = mView.getPaddingStart(); 71 if (Utilities.isRtl(mView.getResources())) { 72 iconLeft = mView.getWidth() - iconSize - iconLeft; 73 } 74 75 outPos[0] += Math.round( 76 scale * iconLeft + (scale * iconSize - preview.getIntrinsicWidth()) / 2 77 + mPositionShift.x); 78 outPos[1] += Math.round((scale * mView.getHeight() - preview.getIntrinsicHeight()) / 2 79 + mPositionShift.y); 80 float size = context.getDeviceProfile().iconSizePx; 81 return scale * iconSize / size; 82 } 83 } 84