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
|
// Copyright 2024 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_INPUT_TOUCH_EMULATOR_H_
#define COMPONENTS_INPUT_TOUCH_EMULATOR_H_
#include "base/component_export.h"
#include "third_party/blink/public/common/input/web_gesture_event.h"
#include "third_party/blink/public/common/input/web_touch_event.h"
#include "third_party/blink/public/mojom/input/input_event_result.mojom-shared.h"
#include "ui/events/gesture_detection/gesture_provider.h"
namespace input {
class RenderWidgetHostViewInput;
// Emulates touch input. See TouchEmulator::Mode for more details.
class COMPONENT_EXPORT(INPUT) TouchEmulator : public ui::GestureProviderClient {
public:
enum class Mode {
// Emulator will consume incoming mouse events and transform them
// into touches and gestures.
kEmulatingTouchFromMouse,
// Emulator will not consume incoming mouse events and instead will
// wait for manually injected touch events.
kInjectingTouchEvents
};
// Call when device scale factor changes.
virtual void SetDeviceScaleFactor(float device_scale_factor) = 0;
// See GestureProvider::SetDoubleTapSupportForPageEnabled.
virtual void SetDoubleTapSupportForPageEnabled(bool enabled) = 0;
// Note that TouchEmulator should always listen to touch events and their acks
// (even in disabled state) to track native stream presence.
virtual bool IsEnabled() const = 0;
virtual bool HandleTouchEvent(const blink::WebTouchEvent& event) = 0;
virtual void OnGestureEventAck(
const blink::WebGestureEvent& event,
RenderWidgetHostViewInput* target_view) = 0;
// Called to notify the TouchEmulator when a view is destroyed.
virtual void OnViewDestroyed(
RenderWidgetHostViewInput* destroyed_view) = 0;
// Returns |true| if the event ack was consumed. Consumed ack should not
// propagate any further.
virtual bool HandleTouchEventAck(
const blink::WebTouchEvent& event,
blink::mojom::InputEventResultState ack_result) = 0;
};
} // namespace input
#endif // COMPONENTS_INPUT_TOUCH_EMULATOR_H_
|
