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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef FirstMeaningfulPaintDetector_h | 5 #ifndef FirstMeaningfulPaintDetector_h |
6 #define FirstMeaningfulPaintDetector_h | 6 #define FirstMeaningfulPaintDetector_h |
7 | 7 |
8 #include "core/CoreExport.h" | 8 #include "core/CoreExport.h" |
9 #include "platform/Timer.h" | 9 #include "platform/Timer.h" |
10 #include "platform/heap/Handle.h" | 10 #include "platform/heap/Handle.h" |
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38 | 38 |
39 static FirstMeaningfulPaintDetector& From(Document&); | 39 static FirstMeaningfulPaintDetector& From(Document&); |
40 | 40 |
41 FirstMeaningfulPaintDetector(PaintTiming*, Document&); | 41 FirstMeaningfulPaintDetector(PaintTiming*, Document&); |
42 virtual ~FirstMeaningfulPaintDetector() {} | 42 virtual ~FirstMeaningfulPaintDetector() {} |
43 | 43 |
44 void MarkNextPaintAsMeaningfulIfNeeded(const LayoutObjectCounter&, | 44 void MarkNextPaintAsMeaningfulIfNeeded(const LayoutObjectCounter&, |
45 int contents_height_before_layout, | 45 int contents_height_before_layout, |
46 int contents_height_after_layout, | 46 int contents_height_after_layout, |
47 int visible_height); | 47 int visible_height); |
| 48 void NotifyInputEvent(); |
48 void NotifyPaint(); | 49 void NotifyPaint(); |
49 void CheckNetworkStable(); | 50 void CheckNetworkStable(); |
50 | 51 |
51 DECLARE_TRACE(); | 52 DECLARE_TRACE(); |
52 | 53 |
| 54 enum HadUserInput { kNoUserInput, kHadUserInput, kHadUserInputEnumMax }; |
| 55 |
53 private: | 56 private: |
54 friend class FirstMeaningfulPaintDetectorTest; | 57 friend class FirstMeaningfulPaintDetectorTest; |
55 | 58 |
56 // The page is n-quiet if there are no more than n active network requests for | 59 // The page is n-quiet if there are no more than n active network requests for |
57 // this duration of time. | 60 // this duration of time. |
58 static constexpr double kNetwork2QuietWindowSeconds = 0.5; | 61 static constexpr double kNetwork2QuietWindowSeconds = 0.5; |
59 static constexpr double kNetwork0QuietWindowSeconds = 0.5; | 62 static constexpr double kNetwork0QuietWindowSeconds = 0.5; |
60 | 63 |
61 Document* GetDocument(); | 64 Document* GetDocument(); |
62 int ActiveConnections(); | 65 int ActiveConnections(); |
63 void SetNetworkQuietTimers(int active_connections); | 66 void SetNetworkQuietTimers(int active_connections); |
64 void Network0QuietTimerFired(TimerBase*); | 67 void Network0QuietTimerFired(TimerBase*); |
65 void Network2QuietTimerFired(TimerBase*); | 68 void Network2QuietTimerFired(TimerBase*); |
66 void ReportHistograms(); | 69 void ReportHistograms(); |
67 | 70 |
68 bool next_paint_is_meaningful_ = false; | 71 bool next_paint_is_meaningful_ = false; |
| 72 HadUserInput had_user_input_ = kNoUserInput; |
| 73 HadUserInput had_user_input_before_provisional_first_meaningful_paint_ = |
| 74 kNoUserInput; |
69 | 75 |
70 Member<PaintTiming> paint_timing_; | 76 Member<PaintTiming> paint_timing_; |
71 double provisional_first_meaningful_paint_ = 0.0; | 77 double provisional_first_meaningful_paint_ = 0.0; |
72 double max_significance_so_far_ = 0.0; | 78 double max_significance_so_far_ = 0.0; |
73 double accumulated_significance_while_having_blank_text_ = 0.0; | 79 double accumulated_significance_while_having_blank_text_ = 0.0; |
74 unsigned prev_layout_object_count_ = 0; | 80 unsigned prev_layout_object_count_ = 0; |
75 bool seen_first_meaningful_paint_candidate_ = false; | 81 bool seen_first_meaningful_paint_candidate_ = false; |
76 bool network0_quiet_reached_ = false; | 82 bool network0_quiet_reached_ = false; |
77 bool network2_quiet_reached_ = false; | 83 bool network2_quiet_reached_ = false; |
78 double first_meaningful_paint0_quiet_ = 0.0; | 84 double first_meaningful_paint0_quiet_ = 0.0; |
79 double first_meaningful_paint2_quiet_ = 0.0; | 85 double first_meaningful_paint2_quiet_ = 0.0; |
80 TaskRunnerTimer<FirstMeaningfulPaintDetector> network0_quiet_timer_; | 86 TaskRunnerTimer<FirstMeaningfulPaintDetector> network0_quiet_timer_; |
81 TaskRunnerTimer<FirstMeaningfulPaintDetector> network2_quiet_timer_; | 87 TaskRunnerTimer<FirstMeaningfulPaintDetector> network2_quiet_timer_; |
82 }; | 88 }; |
83 | 89 |
84 } // namespace blink | 90 } // namespace blink |
85 | 91 |
86 #endif | 92 #endif |
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