StatusBarWindowView.java revision 1caf7eb5999b7c57ca35cbe3579aa8d6b63394cd 
1/*
2 * Copyright (C) 2012 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.phone;
18
19import android.content.Context;
20import android.graphics.Canvas;
21import android.graphics.Paint;
22import android.util.AttributeSet;
23import android.view.KeyEvent;
24import android.view.MotionEvent;
25import android.view.View;
26import android.view.ViewRootImpl;
27import android.widget.FrameLayout;
28import android.widget.ScrollView;
29
30import com.android.systemui.ExpandHelper;
31import com.android.systemui.R;
32import com.android.systemui.statusbar.BaseStatusBar;
33import com.android.systemui.statusbar.policy.NotificationRowLayout;
34
35
36public class StatusBarWindowView extends FrameLayout
37{
38    public static final String TAG = "StatusBarWindowView";
39    public static final boolean DEBUG = BaseStatusBar.DEBUG;
40
41    private ExpandHelper mExpandHelper;
42    private NotificationRowLayout latestItems;
43    private NotificationPanelView mNotificationPanel;
44    private ScrollView mScrollView;
45    private boolean mPointerDown;
46
47    PhoneStatusBar mService;
48
49    public StatusBarWindowView(Context context, AttributeSet attrs) {
50        super(context, attrs);
51        setMotionEventSplittingEnabled(false);
52        setWillNotDraw(!DEBUG);
53    }
54
55    @Override
56    protected void onAttachedToWindow () {
57        super.onAttachedToWindow();
58        latestItems = (NotificationRowLayout) findViewById(R.id.latestItems);
59        mScrollView = (ScrollView) findViewById(R.id.scroll);
60        mNotificationPanel = (NotificationPanelView) findViewById(R.id.notification_panel);
61        int minHeight = getResources().getDimensionPixelSize(R.dimen.notification_row_min_height);
62        int maxHeight = getResources().getDimensionPixelSize(R.dimen.notification_row_max_height);
63        mExpandHelper = new ExpandHelper(mContext, latestItems, minHeight, maxHeight);
64        mExpandHelper.setEventSource(this);
65        mExpandHelper.setScrollView(mScrollView);
66
67        // We really need to be able to animate while window animations are going on
68        // so that activities may be started asynchronously from panel animations
69        final ViewRootImpl root = getViewRootImpl();
70        if (root != null) {
71            root.setDrawDuringWindowsAnimating(true);
72        }
73    }
74
75    @Override
76    public boolean dispatchKeyEvent(KeyEvent event) {
77        boolean down = event.getAction() == KeyEvent.ACTION_DOWN;
78        switch (event.getKeyCode()) {
79        case KeyEvent.KEYCODE_BACK:
80            if (!down) {
81                mService.animateCollapsePanels();
82            }
83            return true;
84        }
85        return super.dispatchKeyEvent(event);
86    }
87
88    @Override
89    public boolean onInterceptTouchEvent(MotionEvent ev) {
90        registerPointer(ev);
91        boolean intercept = false;
92        if (mNotificationPanel.isFullyExpanded() && mScrollView.getVisibility() == View.VISIBLE) {
93            intercept = mExpandHelper.onInterceptTouchEvent(ev);
94        }
95        if (!intercept) {
96            super.onInterceptTouchEvent(ev);
97        }
98        if (intercept) {
99            MotionEvent cancellation = MotionEvent.obtain(ev);
100            cancellation.setAction(MotionEvent.ACTION_CANCEL);
101            latestItems.onInterceptTouchEvent(cancellation);
102            cancellation.recycle();
103        }
104        return intercept;
105    }
106
107    @Override
108    public boolean onTouchEvent(MotionEvent ev) {
109        boolean handled = false;
110        if (mNotificationPanel.isFullyExpanded()) {
111            handled = mExpandHelper.onTouchEvent(ev);
112        }
113        if (!handled) {
114            handled = super.onTouchEvent(ev);
115        }
116        return handled;
117    }
118
119    @Override
120    public void onDraw(Canvas canvas) {
121        super.onDraw(canvas);
122        if (DEBUG) {
123            Paint pt = new Paint();
124            pt.setColor(0x80FFFF00);
125            pt.setStrokeWidth(12.0f);
126            pt.setStyle(Paint.Style.STROKE);
127            canvas.drawRect(0, 0, canvas.getWidth(), canvas.getHeight(), pt);
128        }
129    }
130
131    public void cancelExpandHelper() {
132        if (mExpandHelper != null) {
133            mExpandHelper.cancel();
134        }
135    }
136
137    private void registerPointer(MotionEvent event) {
138        switch (event.getAction()) {
139            case MotionEvent.ACTION_DOWN:
140                mPointerDown = true;
141                break;
142            case MotionEvent.ACTION_CANCEL:
143            case MotionEvent.ACTION_UP:
144                mPointerDown = false;
145                break;
146        }
147    }
148
149    public boolean isPointerDown() {
150        return mPointerDown;
151    }
152}
153
154