ProfiledWebView.java revision 09a71e073aaa8566d3ca5c4881a1411841189858 
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.test.tilebenchmark;
18
19import android.content.Context;
20import android.os.CountDownTimer;
21import android.util.AttributeSet;
22import android.util.Log;
23import android.webkit.WebView;
24
25import com.test.tilebenchmark.ProfileActivity.ProfileCallback;
26import com.test.tilebenchmark.RunData.TileData;
27
28public class ProfiledWebView extends WebView {
29    private int mSpeed;
30
31    private boolean mIsTesting = false;
32    private boolean mIsScrolling = false;
33    private ProfileCallback mCallback;
34    private long mContentInvalMillis;
35    private boolean mHadToBeForced = false;
36    private static final int LOAD_STALL_MILLIS = 2000; // nr of millis after load,
37                                                       // before test is forced
38
39    public ProfiledWebView(Context context) {
40        super(context);
41    }
42
43    public ProfiledWebView(Context context, AttributeSet attrs) {
44        super(context, attrs);
45    }
46
47    public ProfiledWebView(Context context, AttributeSet attrs, int defStyle) {
48        super(context, attrs, defStyle);
49    }
50
51    public ProfiledWebView(Context context, AttributeSet attrs, int defStyle,
52            boolean privateBrowsing) {
53        super(context, attrs, defStyle, privateBrowsing);
54    }
55
56    @Override
57    protected void onDraw(android.graphics.Canvas canvas) {
58        if (mIsTesting && mIsScrolling) {
59            if (canScrollVertically(1)) {
60                scrollBy(0, mSpeed);
61            } else {
62                stopScrollTest();
63                mIsScrolling = false;
64            }
65        }
66        super.onDraw(canvas);
67    }
68
69    /*
70     * Called once the page is loaded to start scrolling for evaluating tiles.
71     * If autoScrolling isn't set, stop must be called manually. Before
72     * scrolling, invalidate all content and redraw it, measuring time taken.
73     */
74    public void startScrollTest(ProfileCallback callback, boolean autoScrolling) {
75        mIsScrolling = autoScrolling;
76        mCallback = callback;
77        mIsTesting = false;
78
79        if (autoScrolling) {
80            // after a while, force it to start even if the pages haven't swapped
81            new CountDownTimer(LOAD_STALL_MILLIS, LOAD_STALL_MILLIS) {
82                @Override
83                public void onTick(long millisUntilFinished) {
84                }
85
86                @Override
87                public void onFinish() {
88                    // invalidate all content, and kick off redraw
89                    registerPageSwapCallback();
90                    discardAllTextures();
91                    invalidate();
92
93                    mContentInvalMillis = System.currentTimeMillis();
94                }
95            }.start();
96        }
97    }
98
99    /*
100     * Called after the manual contentInvalidateAll, after the tiles have all
101     * been redrawn.
102     */
103    @Override
104    protected void pageSwapCallback(boolean startAnim) {
105        mContentInvalMillis = System.currentTimeMillis() - mContentInvalMillis;
106        super.pageSwapCallback(startAnim);
107        Log.d("ProfiledWebView", "REDRAW TOOK " + mContentInvalMillis
108                + "millis");
109        mIsTesting = true;
110        invalidate(); // ensure a redraw so that auto-scrolling can occur
111        tileProfilingStart();
112    }
113
114    /*
115     * Called once the page has stopped scrolling
116     */
117    public void stopScrollTest() {
118        tileProfilingStop();
119        mIsTesting = false;
120
121        if (mCallback == null) {
122            tileProfilingClear();
123            return;
124        }
125
126        RunData data = new RunData(super.tileProfilingNumFrames());
127        // record the time spent (before scrolling) rendering the page
128        data.singleStats.put(getResources().getString(R.string.render_millis),
129                (double)mContentInvalMillis);
130        // record if the page render timed out
131        Log.d("ProfiledWebView", "hadtobeforced = " + mHadToBeForced);
132        data.singleStats.put(getResources().getString(R.string.render_stalls),
133                             mHadToBeForced ? 1.0 : 0.0);
134        mHadToBeForced = false;
135
136        for (int frame = 0; frame < data.frames.length; frame++) {
137            data.frames[frame] = new TileData[
138                    tileProfilingNumTilesInFrame(frame)];
139            for (int tile = 0; tile < data.frames[frame].length; tile++) {
140                int left = tileProfilingGetInt(frame, tile, "left");
141                int top = tileProfilingGetInt(frame, tile, "top");
142                int right = tileProfilingGetInt(frame, tile, "right");
143                int bottom = tileProfilingGetInt(frame, tile, "bottom");
144
145                boolean isReady = super.tileProfilingGetInt(
146                        frame, tile, "isReady") == 1;
147                int level = tileProfilingGetInt(frame, tile, "level");
148
149                float scale = tileProfilingGetFloat(frame, tile, "scale");
150
151                data.frames[frame][tile] = data.new TileData(left, top, right, bottom,
152                        isReady, level, scale);
153            }
154        }
155        tileProfilingClear();
156
157        mCallback.profileCallback(data);
158    }
159
160    @Override
161    public void loadUrl(String url) {
162        if (!url.startsWith("http://") && !url.startsWith("file://")) {
163            url = "http://" + url;
164        }
165        super.loadUrl(url);
166    }
167
168    public void setAutoScrollSpeed(int speedInt) {
169        mSpeed = speedInt;
170    }
171}
172