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      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 
     17 package com.test.tilebenchmark;
     18 
     19 import android.content.Context;
     20 import android.os.CountDownTimer;
     21 import android.util.AttributeSet;
     22 import android.util.Log;
     23 import android.webkit.WebView;
     24 
     25 import com.test.tilebenchmark.ProfileActivity.ProfileCallback;
     26 import com.test.tilebenchmark.RunData.TileData;
     27 
     28 public 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 int mTestCount = 0;
     37     private static final int LOAD_STALL_MILLIS = 5000; // nr of millis after load,
     38                                                        // before test is forced
     39 
     40     public ProfiledWebView(Context context) {
     41         super(context);
     42     }
     43 
     44     public ProfiledWebView(Context context, AttributeSet attrs) {
     45         super(context, attrs);
     46     }
     47 
     48     public ProfiledWebView(Context context, AttributeSet attrs, int defStyle) {
     49         super(context, attrs, defStyle);
     50     }
     51 
     52     public ProfiledWebView(Context context, AttributeSet attrs, int defStyle,
     53             boolean privateBrowsing) {
     54         super(context, attrs, defStyle, privateBrowsing);
     55     }
     56 
     57     @Override
     58     protected void onDraw(android.graphics.Canvas canvas) {
     59         if (mIsTesting && mIsScrolling) {
     60             if (canScrollVertically(1)) {
     61                 scrollBy(0, mSpeed);
     62             } else {
     63                 stopScrollTest();
     64                 mIsScrolling = false;
     65             }
     66         }
     67         super.onDraw(canvas);
     68     }
     69 
     70     /*
     71      * Called once the page is loaded to start scrolling for evaluating tiles.
     72      * If autoScrolling isn't set, stop must be called manually. Before
     73      * scrolling, invalidate all content and redraw it, measuring time taken.
     74      */
     75     public void startScrollTest(ProfileCallback callback, boolean autoScrolling) {
     76         mIsScrolling = autoScrolling;
     77         mCallback = callback;
     78         mIsTesting = false;
     79         mContentInvalMillis = System.currentTimeMillis();
     80         registerPageSwapCallback();
     81         contentInvalidateAll();
     82         invalidate();
     83 
     84         mTestCount++;
     85         final int testCount = mTestCount;
     86 
     87         if (autoScrolling) {
     88             // after a while, force it to start even if the pages haven't swapped
     89             new CountDownTimer(LOAD_STALL_MILLIS, LOAD_STALL_MILLIS) {
     90                 @Override
     91                 public void onTick(long millisUntilFinished) {
     92                 }
     93 
     94                 @Override
     95                 public void onFinish() {
     96                     if (testCount == mTestCount && !mIsTesting) {
     97                         mHadToBeForced = true;
     98                         Log.d("ProfiledWebView", "num " + testCount
     99                                 + " forcing a page swap with a scroll...");
    100                         scrollBy(0, 1);
    101                         invalidate(); // ensure a redraw so that auto-scrolling can occur
    102                     }
    103                 }
    104             }.start();
    105         }
    106     }
    107 
    108     /*
    109      * Called after the manual contentInvalidateAll, after the tiles have all
    110      * been redrawn.
    111      */
    112     @Override
    113     protected void pageSwapCallback(boolean startAnim) {
    114         mContentInvalMillis = System.currentTimeMillis() - mContentInvalMillis;
    115         super.pageSwapCallback(startAnim);
    116         Log.d("ProfiledWebView", "REDRAW TOOK " + mContentInvalMillis
    117                 + "millis");
    118         mIsTesting = true;
    119         invalidate(); // ensure a redraw so that auto-scrolling can occur
    120         tileProfilingStart();
    121     }
    122 
    123     /*
    124      * Called once the page has stopped scrolling
    125      */
    126     public void stopScrollTest() {
    127         tileProfilingStop();
    128         mIsTesting = false;
    129 
    130         if (mCallback == null) {
    131             tileProfilingClear();
    132             return;
    133         }
    134 
    135         RunData data = new RunData(super.tileProfilingNumFrames());
    136         // record the time spent (before scrolling) rendering the page
    137         data.singleStats.put(getResources().getString(R.string.render_millis),
    138                 (double)mContentInvalMillis);
    139         // record if the page render timed out
    140         Log.d("ProfiledWebView", "hadtobeforced = " + mHadToBeForced);
    141         data.singleStats.put(getResources().getString(R.string.render_stalls),
    142                              mHadToBeForced ? 1.0 : 0.0);
    143         mHadToBeForced = false;
    144 
    145         for (int frame = 0; frame < data.frames.length; frame++) {
    146             data.frames[frame] = new TileData[
    147                     tileProfilingNumTilesInFrame(frame)];
    148             for (int tile = 0; tile < data.frames[frame].length; tile++) {
    149                 int left = tileProfilingGetInt(frame, tile, "left");
    150                 int top = tileProfilingGetInt(frame, tile, "top");
    151                 int right = tileProfilingGetInt(frame, tile, "right");
    152                 int bottom = tileProfilingGetInt(frame, tile, "bottom");
    153 
    154                 boolean isReady = super.tileProfilingGetInt(
    155                         frame, tile, "isReady") == 1;
    156                 int level = tileProfilingGetInt(frame, tile, "level");
    157 
    158                 float scale = tileProfilingGetFloat(frame, tile, "scale");
    159 
    160                 data.frames[frame][tile] = data.new TileData(left, top, right, bottom,
    161                         isReady, level, scale);
    162             }
    163         }
    164         tileProfilingClear();
    165 
    166         mCallback.profileCallback(data);
    167     }
    168 
    169     @Override
    170     public void loadUrl(String url) {
    171         if (!url.startsWith("http://") && !url.startsWith("file://")) {
    172             url = "http://" + url;
    173         }
    174         super.loadUrl(url);
    175     }
    176 
    177     public void setAutoScrollSpeed(int speedInt) {
    178         mSpeed = speedInt;
    179     }
    180 }
    181