1/*
2 * Copyright (C) 2011 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
17package com.android.systemui.statusbar.policy;
18
19import android.app.Notification;
20import android.content.Context;
21import android.content.res.Configuration;
22import android.graphics.Rect;
23import android.util.AttributeSet;
24import android.util.Log;
25import android.view.MotionEvent;
26import android.view.View;
27import android.view.ViewConfiguration;
28import android.view.ViewGroup;
29import android.widget.FrameLayout;
30import android.widget.LinearLayout;
31
32import com.android.systemui.ExpandHelper;
33import com.android.systemui.R;
34import com.android.systemui.SwipeHelper;
35import com.android.systemui.statusbar.BaseStatusBar;
36import com.android.systemui.statusbar.NotificationData;
37
38public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.Callback, ExpandHelper.Callback {
39    private static final String TAG = "HeadsUpNotificationView";
40    private static final boolean DEBUG = false;
41    private static final boolean SPEW = DEBUG;
42
43    Rect mTmpRect = new Rect();
44
45    private final int mTouchSensitivityDelay;
46    private SwipeHelper mSwipeHelper;
47
48    private BaseStatusBar mBar;
49    private ExpandHelper mExpandHelper;
50    private long mStartTouchTime;
51
52    private ViewGroup mContentHolder;
53    private ViewGroup mContentSlider;
54
55    private NotificationData.Entry mHeadsUp;
56
57    public HeadsUpNotificationView(Context context, AttributeSet attrs) {
58        this(context, attrs, 0);
59    }
60
61    public HeadsUpNotificationView(Context context, AttributeSet attrs, int defStyle) {
62        super(context, attrs, defStyle);
63        mTouchSensitivityDelay = getResources().getInteger(R.integer.heads_up_sensitivity_delay);
64        if (DEBUG) Log.v(TAG, "create() " + mTouchSensitivityDelay);
65    }
66
67    public void setBar(BaseStatusBar bar) {
68        mBar = bar;
69    }
70
71    public ViewGroup getHolder() {
72        return mContentHolder;
73    }
74
75    public boolean setNotification(NotificationData.Entry headsUp) {
76        mHeadsUp = headsUp;
77        mHeadsUp.row.setExpanded(false);
78        if (mContentHolder == null) {
79            // too soon!
80            return false;
81        }
82        mContentHolder.setX(0);
83        mContentHolder.setVisibility(View.VISIBLE);
84        mContentHolder.setAlpha(1f);
85        mContentHolder.removeAllViews();
86        mContentHolder.addView(mHeadsUp.row);
87        mSwipeHelper.snapChild(mContentSlider, 1f);
88        mStartTouchTime = System.currentTimeMillis() + mTouchSensitivityDelay;
89        return true;
90    }
91
92    public boolean isClearable() {
93        return mHeadsUp == null || mHeadsUp.notification.isClearable();
94    }
95
96    public void setMargin(int notificationPanelMarginPx) {
97        if (SPEW) Log.v(TAG, "setMargin() " + notificationPanelMarginPx);
98        if (mContentSlider != null) {
99            FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mContentSlider.getLayoutParams();
100            lp.setMarginStart(notificationPanelMarginPx);
101            mContentSlider.setLayoutParams(lp);
102        }
103    }
104
105    // LinearLayout methods
106
107    @Override
108    public void onDraw(android.graphics.Canvas c) {
109        super.onDraw(c);
110        if (DEBUG) {
111            //Log.d(TAG, "onDraw: canvas height: " + c.getHeight() + "px; measured height: "
112            //        + getMeasuredHeight() + "px");
113            c.save();
114            c.clipRect(6, 6, c.getWidth() - 6, getMeasuredHeight() - 6,
115                    android.graphics.Region.Op.DIFFERENCE);
116            c.drawColor(0xFFcc00cc);
117            c.restore();
118        }
119    }
120
121    // ViewGroup methods
122
123    @Override
124    public void onAttachedToWindow() {
125        float densityScale = getResources().getDisplayMetrics().density;
126        float pagingTouchSlop = ViewConfiguration.get(getContext()).getScaledPagingTouchSlop();
127        mSwipeHelper = new SwipeHelper(SwipeHelper.X, this, densityScale, pagingTouchSlop);
128
129        int minHeight = getResources().getDimensionPixelSize(R.dimen.notification_row_min_height);
130        int maxHeight = getResources().getDimensionPixelSize(R.dimen.notification_row_max_height);
131        mExpandHelper = new ExpandHelper(mContext, this, minHeight, maxHeight);
132
133        mContentHolder = (ViewGroup) findViewById(R.id.content_holder);
134        mContentSlider = (ViewGroup) findViewById(R.id.content_slider);
135
136        if (mHeadsUp != null) {
137            // whoops, we're on already!
138            setNotification(mHeadsUp);
139        }
140    }
141
142    @Override
143    public boolean onInterceptTouchEvent(MotionEvent ev) {
144        if (DEBUG) Log.v(TAG, "onInterceptTouchEvent()");
145        if (System.currentTimeMillis() < mStartTouchTime) {
146            return true;
147        }
148        return mSwipeHelper.onInterceptTouchEvent(ev)
149                || mExpandHelper.onInterceptTouchEvent(ev)
150                || super.onInterceptTouchEvent(ev);
151    }
152
153    // View methods
154
155    @Override
156    public boolean onTouchEvent(MotionEvent ev) {
157        if (System.currentTimeMillis() < mStartTouchTime) {
158            return false;
159        }
160        mBar.resetHeadsUpDecayTimer();
161        return mSwipeHelper.onTouchEvent(ev)
162                || mExpandHelper.onTouchEvent(ev)
163                || super.onTouchEvent(ev);
164    }
165
166    @Override
167    protected void onConfigurationChanged(Configuration newConfig) {
168        super.onConfigurationChanged(newConfig);
169        float densityScale = getResources().getDisplayMetrics().density;
170        mSwipeHelper.setDensityScale(densityScale);
171        float pagingTouchSlop = ViewConfiguration.get(getContext()).getScaledPagingTouchSlop();
172        mSwipeHelper.setPagingTouchSlop(pagingTouchSlop);
173    }
174
175    // ExpandHelper.Callback methods
176
177    @Override
178    public View getChildAtRawPosition(float x, float y) {
179        return getChildAtPosition(x, y);
180    }
181
182    @Override
183    public View getChildAtPosition(float x, float y) {
184        return mHeadsUp == null ? null : mHeadsUp.row;
185    }
186
187    @Override
188    public boolean canChildBeExpanded(View v) {
189        return mHeadsUp != null && mHeadsUp.row == v && mHeadsUp.row.isExpandable();
190    }
191
192    @Override
193    public void setUserExpandedChild(View v, boolean userExpanded) {
194        if (mHeadsUp != null && mHeadsUp.row == v) {
195            mHeadsUp.row.setUserExpanded(userExpanded);
196        }
197    }
198
199    @Override
200    public void setUserLockedChild(View v, boolean userLocked) {
201        if (mHeadsUp != null && mHeadsUp.row == v) {
202            mHeadsUp.row.setUserLocked(userLocked);
203        }
204    }
205
206    // SwipeHelper.Callback methods
207
208    @Override
209    public boolean canChildBeDismissed(View v) {
210        return true;
211    }
212
213    @Override
214    public void onChildDismissed(View v) {
215        Log.v(TAG, "User swiped heads up to dismiss");
216        mBar.onHeadsUpDismissed();
217    }
218
219    @Override
220    public void onBeginDrag(View v) {
221    }
222
223    @Override
224    public void onDragCancelled(View v) {
225        mContentHolder.setAlpha(1f); // sometimes this isn't quite reset
226    }
227
228    @Override
229    public View getChildAtPosition(MotionEvent ev) {
230        return mContentSlider;
231    }
232
233    @Override
234    public View getChildContentView(View v) {
235        return mContentSlider;
236    }
237}