Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 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 | |
Ben Lin | 1c45629 | 2016-10-07 16:43:18 -0700 | [diff] [blame] | 17 | package com.android.documentsui; |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 18 | |
Garfield Tan | da2c0f0 | 2017-04-11 13:47:58 -0700 | [diff] [blame] | 19 | import com.android.documentsui.DragAndDropManager.State; |
| 20 | |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 21 | import android.content.Context; |
| 22 | import android.graphics.Canvas; |
Ben Lin | d8d7c25 | 2016-11-16 13:21:40 -0800 | [diff] [blame] | 23 | import android.graphics.Color; |
| 24 | import android.graphics.Paint; |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 25 | import android.graphics.Point; |
| 26 | import android.graphics.Rect; |
| 27 | import android.graphics.drawable.Drawable; |
| 28 | import android.view.LayoutInflater; |
| 29 | import android.view.View; |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 30 | import android.widget.TextView; |
| 31 | |
Garfield Tan | da2c0f0 | 2017-04-11 13:47:58 -0700 | [diff] [blame] | 32 | class DragShadowBuilder extends View.DragShadowBuilder { |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 33 | |
| 34 | private final View mShadowView; |
| 35 | private final TextView mTitle; |
Ben Lin | 166c5c6 | 2016-11-01 12:14:38 -0700 | [diff] [blame] | 36 | private final DropBadgeView mIcon; |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 37 | private final int mWidth; |
| 38 | private final int mHeight; |
Ben Lin | d8d7c25 | 2016-11-16 13:21:40 -0800 | [diff] [blame] | 39 | private final int mShadowRadius; |
| 40 | private int mPadding; |
| 41 | private Paint paint; |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 42 | |
Garfield Tan | da2c0f0 | 2017-04-11 13:47:58 -0700 | [diff] [blame] | 43 | DragShadowBuilder(Context context) { |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 44 | mWidth = context.getResources().getDimensionPixelSize(R.dimen.drag_shadow_width); |
Ben Lin | 1c45629 | 2016-10-07 16:43:18 -0700 | [diff] [blame] | 45 | mHeight = context.getResources().getDimensionPixelSize(R.dimen.drag_shadow_height); |
Ben Lin | d8d7c25 | 2016-11-16 13:21:40 -0800 | [diff] [blame] | 46 | mShadowRadius = context.getResources().getDimensionPixelSize(R.dimen.drag_shadow_radius); |
| 47 | mPadding = context.getResources().getDimensionPixelSize(R.dimen.drag_shadow_padding); |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 48 | |
| 49 | mShadowView = LayoutInflater.from(context).inflate(R.layout.drag_shadow_layout, null); |
| 50 | mTitle = (TextView) mShadowView.findViewById(android.R.id.title); |
Ben Lin | 166c5c6 | 2016-11-01 12:14:38 -0700 | [diff] [blame] | 51 | mIcon = (DropBadgeView) mShadowView.findViewById(android.R.id.icon); |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 52 | |
Ben Lin | d8d7c25 | 2016-11-16 13:21:40 -0800 | [diff] [blame] | 53 | // Important for certain APIs |
| 54 | mShadowView.setLayerType(View.LAYER_TYPE_SOFTWARE, paint); |
| 55 | paint = new Paint(Paint.ANTI_ALIAS_FLAG); |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | @Override |
| 59 | public void onProvideShadowMetrics( |
| 60 | Point shadowSize, Point shadowTouchPoint) { |
| 61 | shadowSize.set(mWidth, mHeight); |
| 62 | shadowTouchPoint.set(mWidth, mHeight); |
| 63 | } |
| 64 | |
| 65 | @Override |
| 66 | public void onDrawShadow(Canvas canvas) { |
| 67 | Rect r = canvas.getClipBounds(); |
| 68 | // Calling measure is necessary in order for all child views to get correctly laid out. |
| 69 | mShadowView.measure( |
| 70 | View.MeasureSpec.makeMeasureSpec(r.right- r.left, View.MeasureSpec.EXACTLY), |
Ben Lin | d8d7c25 | 2016-11-16 13:21:40 -0800 | [diff] [blame] | 71 | View.MeasureSpec.makeMeasureSpec(r.bottom - r.top , View.MeasureSpec.EXACTLY)); |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 72 | mShadowView.layout(r.left, r.top, r.right, r.bottom); |
Ben Lin | d8d7c25 | 2016-11-16 13:21:40 -0800 | [diff] [blame] | 73 | |
| 74 | // Since DragShadow is not an actual view drawn in hardware-accelerated window, |
| 75 | // android:elevation does not work; we need to draw the shadow ourselves manually. |
| 76 | paint.setColor(Color.TRANSPARENT); |
| 77 | // Shadow 1 |
| 78 | int opacity = (int) (255 * 0.1); |
| 79 | paint.setShadowLayer(mShadowRadius, 0, 0, Color.argb(opacity, 0, 0, 0)); |
| 80 | canvas.drawRect(r.left + mPadding, r.top + mPadding, r.right - mPadding, |
| 81 | r.bottom - mPadding, paint); |
| 82 | // Shadow 2 |
| 83 | opacity = (int) (255 * 0.24); |
| 84 | paint.setShadowLayer(mShadowRadius, 0, mShadowRadius, Color.argb(opacity, 0, 0, 0)); |
| 85 | canvas.drawRect(r.left + mPadding, r.top + mPadding, r.right - mPadding, |
| 86 | r.bottom - mPadding, paint); |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 87 | mShadowView.draw(canvas); |
| 88 | } |
Steve McKay | f0fceb4 | 2016-09-07 17:35:55 -0700 | [diff] [blame] | 89 | |
Garfield Tan | da2c0f0 | 2017-04-11 13:47:58 -0700 | [diff] [blame] | 90 | void updateTitle(String title) { |
Ben Lin | 1c45629 | 2016-10-07 16:43:18 -0700 | [diff] [blame] | 91 | mTitle.setText(title); |
| 92 | } |
| 93 | |
Garfield Tan | da2c0f0 | 2017-04-11 13:47:58 -0700 | [diff] [blame] | 94 | void updateIcon(Drawable icon) { |
Ben Lin | 166c5c6 | 2016-11-01 12:14:38 -0700 | [diff] [blame] | 95 | mIcon.updateIcon(icon); |
Ben Lin | 1c45629 | 2016-10-07 16:43:18 -0700 | [diff] [blame] | 96 | } |
| 97 | |
Garfield Tan | da2c0f0 | 2017-04-11 13:47:58 -0700 | [diff] [blame] | 98 | void onStateUpdated(@State int state) { |
| 99 | mIcon.updateState(state); |
Steve McKay | f0fceb4 | 2016-09-07 17:35:55 -0700 | [diff] [blame] | 100 | } |
Steve McKay | 84769b8 | 2016-06-09 10:46:07 -0700 | [diff] [blame] | 101 | } |