1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_VIZ_SERVICE_DISPLAY_DELEGATED_INK_TRAIL_DATA_H_
#define COMPONENTS_VIZ_SERVICE_DISPLAY_DELEGATED_INK_TRAIL_DATA_H_
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "base/time/time.h"
#include "components/viz/service/viz_service_export.h"
#include "ui/base/prediction/prediction_metrics_handler.h"
#include "ui/gfx/delegated_ink_point.h"
#include "ui/gfx/geometry/point_f.h"
namespace gfx {
class DelegatedInkMetadata;
} // namespace gfx
namespace ui {
class LinearResampling;
} // namespace ui
namespace viz {
class VIZ_SERVICE_EXPORT DelegatedInkTrailData {
public:
DelegatedInkTrailData();
~DelegatedInkTrailData();
void AddPoint(const gfx::DelegatedInkPoint& point);
void PredictPoints(std::vector<gfx::DelegatedInkPoint>* ink_points_to_draw,
gfx::DelegatedInkMetadata* metadata);
void Reset();
bool ContainsMatchingPoint(gfx::DelegatedInkMetadata* metadata) const;
gfx::DelegatedInkPoint GetMatchingPoint(
gfx::DelegatedInkMetadata* metadata) const;
void ErasePointsOlderThanMetadata(gfx::DelegatedInkMetadata* metadata);
void UpdateMetrics(gfx::DelegatedInkMetadata* metadata);
std::map<base::TimeTicks, gfx::DelegatedInkPoint>& GetPoints() {
return points_;
}
const std::map<base::TimeTicks, gfx::DelegatedInkPoint>& GetPoints() const {
return points_;
}
private:
// Handler for calculating useful metrics for evaluating predicted points
// and populating the histograms with those metrics.
ui::PredictionMetricsHandler metrics_handler_;
// Predictor for improving the perceived benefits of using Delegated Ink.
std::unique_ptr<ui::LinearResampling> predictor_;
// The points that arrived from the browser process and will be used to draw
// the delegated ink trail.
std::map<base::TimeTicks, gfx::DelegatedInkPoint> points_;
// The pointer id associated with these points.
int32_t pointer_id_;
};
} // namespace viz
#endif // COMPONENTS_VIZ_SERVICE_DISPLAY_DELEGATED_INK_TRAIL_DATA_H_
|
