1 /*
2  * Copyright (C) 2017 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.widget;
18 
19 import android.annotation.SuppressLint;
20 import android.content.Context;
21 import android.graphics.Insets;
22 import android.graphics.Rect;
23 import android.util.AttributeSet;
24 import android.view.MotionEvent;
25 import android.view.View;
26 import android.view.ViewGroup;
27 import android.view.ViewParent;
28 import android.view.WindowInsets;
29 import android.widget.ScrollView;
30 
31 import com.android.launcher3.DeviceProfile;
32 import com.android.launcher3.R;
33 import com.android.launcher3.dragndrop.AddItemActivity;
34 import com.android.launcher3.views.AbstractSlideInView;
35 
36 /**
37  * Bottom sheet for the pin widget.
38  */
39 public class AddItemWidgetsBottomSheet extends AbstractSlideInView<AddItemActivity> implements
40         View.OnApplyWindowInsetsListener {
41 
42     private static final int DEFAULT_CLOSE_DURATION = 200;
43 
44     private final Rect mInsets;
45     private ScrollView mWidgetPreviewScrollView;
46 
47     private int mContentHorizontalMarginInPx;
48 
AddItemWidgetsBottomSheet(Context context, AttributeSet attrs)49     public AddItemWidgetsBottomSheet(Context context, AttributeSet attrs) {
50         this(context, attrs, 0);
51     }
52 
AddItemWidgetsBottomSheet(Context context, AttributeSet attrs, int defStyleAttr)53     public AddItemWidgetsBottomSheet(Context context, AttributeSet attrs, int defStyleAttr) {
54         super(context, attrs, defStyleAttr);
55         mInsets = new Rect();
56         mContentHorizontalMarginInPx = getResources().getDimensionPixelSize(
57                 R.dimen.widget_list_horizontal_margin);
58     }
59 
60     /**
61      * Attaches to activity container and animates open the bottom sheet.
62      */
show()63     public void show() {
64         ViewParent parent = getParent();
65         if (parent instanceof ViewGroup) {
66             ((ViewGroup) parent).removeView(this);
67         }
68         attachToContainer();
69         setOnApplyWindowInsetsListener(this);
70         animateOpen();
71     }
72 
73     @Override
onControllerInterceptTouchEvent(MotionEvent ev)74     public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
75         if (ev.getAction() == MotionEvent.ACTION_DOWN) {
76             mNoIntercept = false;
77             // Suppress drag to dismiss gesture if the scroll view is being scrolled.
78             if (getPopupContainer().isEventOverView(mWidgetPreviewScrollView, ev)
79                     && mWidgetPreviewScrollView.getScrollY() > 0) {
80                 mNoIntercept = true;
81             }
82         }
83         return super.onControllerInterceptTouchEvent(ev);
84     }
85 
86     @Override
onLayout(boolean changed, int l, int t, int r, int b)87     protected void onLayout(boolean changed, int l, int t, int r, int b) {
88         int width = r - l;
89         int height = b - t;
90 
91         // Lay out content as center bottom aligned.
92         int contentWidth = mContent.getMeasuredWidth();
93         int contentLeft = (width - contentWidth - mInsets.left - mInsets.right) / 2 + mInsets.left;
94         mContent.layout(contentLeft, height - mContent.getMeasuredHeight(),
95                 contentLeft + contentWidth, height);
96 
97         setTranslationShift(mTranslationShift);
98     }
99 
100     @Override
onMeasure(int widthMeasureSpec, int heightMeasureSpec)101     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
102         DeviceProfile deviceProfile = mActivityContext.getDeviceProfile();
103         int widthUsed;
104         if (deviceProfile.isTablet) {
105             int margin = deviceProfile.allAppsLeftRightMargin;
106             widthUsed = Math.max(2 * margin, 2 * (mInsets.left + mInsets.right));
107         } else if (mInsets.bottom > 0) {
108             widthUsed = mInsets.left + mInsets.right;
109         } else {
110             Rect padding = deviceProfile.workspacePadding;
111             widthUsed = Math.max(padding.left + padding.right,
112                     2 * (mInsets.left + mInsets.right));
113         }
114 
115         measureChildWithMargins(mContent, widthMeasureSpec,
116                 widthUsed, heightMeasureSpec, deviceProfile.bottomSheetTopPadding);
117         setMeasuredDimension(MeasureSpec.getSize(widthMeasureSpec),
118                 MeasureSpec.getSize(heightMeasureSpec));
119     }
120 
121     @Override
onFinishInflate()122     protected void onFinishInflate() {
123         super.onFinishInflate();
124         mContent = findViewById(R.id.add_item_bottom_sheet_content);
125         mWidgetPreviewScrollView = findViewById(R.id.widget_preview_scroll_view);
126     }
127 
animateOpen()128     private void animateOpen() {
129         if (mIsOpen || mOpenCloseAnimation.getAnimationPlayer().isRunning()) {
130             return;
131         }
132         mIsOpen = true;
133         setUpDefaultOpenAnimation().start();
134     }
135 
136     @Override
handleClose(boolean animate)137     protected void handleClose(boolean animate) {
138         handleClose(animate, DEFAULT_CLOSE_DURATION);
139     }
140 
141     @Override
isOfType(@loatingViewType int type)142     protected boolean isOfType(@FloatingViewType int type) {
143         return (type & TYPE_PIN_WIDGET_FROM_EXTERNAL_POPUP) != 0;
144     }
145 
146     @Override
getScrimColor(Context context)147     protected int getScrimColor(Context context) {
148         // Don't add a scrim when using the standalone picker activity. The background dimming is
149         // handled by applying dimBackground in the activity theme, so the scrim doesn't slide in
150         // with the window.
151         return -1;
152     }
153 
154     @SuppressLint("NewApi") // Already added API check.
155     @Override
onApplyWindowInsets(View view, WindowInsets windowInsets)156     public WindowInsets onApplyWindowInsets(View view, WindowInsets windowInsets) {
157         Insets insets = windowInsets.getInsets(WindowInsets.Type.systemBars());
158         mInsets.set(insets.left, insets.top, insets.right, insets.bottom);
159         mContent.setPadding(mContent.getPaddingStart(), mContent.getPaddingTop(),
160                 mContent.getPaddingEnd(), mInsets.bottom);
161 
162         int contentHorizontalMarginInPx = getResources().getDimensionPixelSize(
163                 R.dimen.widget_list_horizontal_margin);
164         if (contentHorizontalMarginInPx != mContentHorizontalMarginInPx) {
165             setContentHorizontalMargin(findViewById(R.id.widget_appName),
166                     contentHorizontalMarginInPx);
167             setContentHorizontalMargin(findViewById(R.id.widget_drag_instruction),
168                     contentHorizontalMarginInPx);
169             setContentHorizontalMargin(findViewById(R.id.widget_cell), contentHorizontalMarginInPx);
170             setContentHorizontalMargin(findViewById(R.id.actions_container),
171                     contentHorizontalMarginInPx);
172             mContentHorizontalMarginInPx = contentHorizontalMarginInPx;
173         }
174         return windowInsets;
175     }
176 
setContentHorizontalMargin(View view, int contentHorizontalMargin)177     private static void setContentHorizontalMargin(View view, int contentHorizontalMargin) {
178         ViewGroup.MarginLayoutParams layoutParams =
179                 ((ViewGroup.MarginLayoutParams) view.getLayoutParams());
180         layoutParams.setMarginStart(contentHorizontalMargin);
181         layoutParams.setMarginEnd(contentHorizontalMargin);
182     }
183 }
184