NotificationPanelView.java revision d389ff7d8930473cead3bd1b7b63c2fe5f6b51f1 
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.content.res.Resources;
21import android.graphics.Canvas;
22import android.graphics.drawable.Drawable;
23import android.util.AttributeSet;
24import android.util.EventLog;
25import android.view.MotionEvent;
26import android.view.View;
27import android.view.accessibility.AccessibilityEvent;
28
29import com.android.systemui.EventLogTags;
30import com.android.systemui.R;
31import com.android.systemui.statusbar.GestureRecorder;
32
33public class NotificationPanelView extends PanelView {
34    public static final boolean DEBUG_GESTURES = true;
35
36    Drawable mHandleBar;
37    int mHandleBarHeight;
38    View mHandleView;
39    int mFingers;
40    PhoneStatusBar mStatusBar;
41    boolean mOkToFlip;
42
43    public NotificationPanelView(Context context, AttributeSet attrs) {
44        super(context, attrs);
45    }
46
47    public void setStatusBar(PhoneStatusBar bar) {
48        mStatusBar = bar;
49    }
50
51    @Override
52    protected void onFinishInflate() {
53        super.onFinishInflate();
54
55        Resources resources = getContext().getResources();
56        mHandleBar = resources.getDrawable(R.drawable.status_bar_close);
57        mHandleBarHeight = resources.getDimensionPixelSize(R.dimen.close_handle_height);
58        mHandleView = findViewById(R.id.handle);
59    }
60
61    @Override
62    public void fling(float vel, boolean always) {
63        GestureRecorder gr = ((PhoneStatusBarView) mBar).mBar.getGestureRecorder();
64        if (gr != null) {
65            gr.tag(
66                "fling " + ((vel > 0) ? "open" : "closed"),
67                "notifications,v=" + vel);
68        }
69        super.fling(vel, always);
70    }
71
72    @Override
73    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
74        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
75            event.getText()
76                    .add(getContext().getString(R.string.accessibility_desc_notification_shade));
77            return true;
78        }
79
80        return super.dispatchPopulateAccessibilityEvent(event);
81    }
82
83    // We draw the handle ourselves so that it's always glued to the bottom of the window.
84    @Override
85    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
86        super.onLayout(changed, left, top, right, bottom);
87        if (changed) {
88            final int pl = getPaddingLeft();
89            final int pr = getPaddingRight();
90            mHandleBar.setBounds(pl, 0, getWidth() - pr, (int) mHandleBarHeight);
91        }
92    }
93
94    @Override
95    public void draw(Canvas canvas) {
96        super.draw(canvas);
97        final int off = (int) (getHeight() - mHandleBarHeight - getPaddingBottom());
98        canvas.translate(0, off);
99        mHandleBar.setState(mHandleView.getDrawableState());
100        mHandleBar.draw(canvas);
101        canvas.translate(0, -off);
102    }
103
104    @Override
105    public boolean onTouchEvent(MotionEvent event) {
106        if (DEBUG_GESTURES) {
107            if (event.getActionMasked() != MotionEvent.ACTION_MOVE) {
108                EventLog.writeEvent(EventLogTags.SYSUI_NOTIFICATIONPANEL_TOUCH,
109                       event.getActionMasked(), (int) event.getX(), (int) event.getY());
110            }
111        }
112        if (PhoneStatusBar.SETTINGS_DRAG_SHORTCUT && mStatusBar.mHasFlipSettings) {
113            switch (event.getActionMasked()) {
114                case MotionEvent.ACTION_DOWN:
115                    mOkToFlip = getExpandedHeight() == 0;
116                    break;
117                case MotionEvent.ACTION_POINTER_DOWN:
118                    if (mOkToFlip) {
119                        float miny = event.getY(0);
120                        float maxy = miny;
121                        for (int i=1; i<event.getPointerCount(); i++) {
122                            final float y = event.getY(i);
123                            if (y < miny) miny = y;
124                            if (y > maxy) maxy = y;
125                        }
126                        if (maxy - miny < mHandleBarHeight) {
127                            if (getMeasuredHeight() < mHandleBarHeight) {
128                                mStatusBar.switchToSettings();
129                            } else {
130                                mStatusBar.flipToSettings();
131                            }
132                            mOkToFlip = false;
133                        }
134                    }
135                    break;
136            }
137        }
138        return mHandleView.dispatchTouchEvent(event);
139    }
140}
141