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
|
// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_TOUCH_TOUCH_HUD_RENDERER_H_
#define ASH_TOUCH_TOUCH_HUD_RENDERER_H_
#include <map>
#include "ash/ash_export.h"
#include "base/memory/raw_ptr.h"
#include "ui/views/widget/widget_observer.h"
namespace ui {
class TouchEvent;
}
namespace views {
class Widget;
}
namespace ash {
class TouchPointView;
// Handles touch events to draw out touch points for TouchHudProjection
// (--show-taps).
class ASH_EXPORT TouchHudRenderer : public views::WidgetObserver {
public:
explicit TouchHudRenderer(views::Widget* parent_widget);
TouchHudRenderer(const TouchHudRenderer&) = delete;
TouchHudRenderer& operator=(const TouchHudRenderer&) = delete;
~TouchHudRenderer() override;
// Called to clear touch points and traces from the screen.
void Clear();
// Receives a touch event and draws its touch point.
void HandleTouchEvent(const ui::TouchEvent& event);
// views::WidgetObserver:
void OnWidgetDestroying(views::Widget* widget) override;
private:
friend class TouchHudProjectionTest;
// The parent widget that all touch points would be drawn in.
raw_ptr<views::Widget> parent_widget_;
// A map of touch ids to TouchPointView.
std::map<int, raw_ptr<TouchPointView, CtnExperimental>> points_;
};
} // namespace ash
#endif // ASH_TOUCH_TOUCH_HUD_RENDERER_H_
|
