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Side by Side Diff: content/browser/renderer_host/input/touch_emulator.h

Issue 667943003: Standardize usage of virtual/override/final in content/browser/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years, 2 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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 CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EMULATOR_H_ 5 #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EMULATOR_H_
6 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EMULATOR_H_ 6 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EMULATOR_H_
7 7
8 #include "content/browser/renderer_host/input/touch_emulator_client.h" 8 #include "content/browser/renderer_host/input/touch_emulator_client.h"
9 #include "content/common/cursors/webcursor.h" 9 #include "content/common/cursors/webcursor.h"
10 #include "content/common/input/input_event_ack_state.h" 10 #include "content/common/input/input_event_ack_state.h"
11 #include "third_party/WebKit/public/web/WebInputEvent.h" 11 #include "third_party/WebKit/public/web/WebInputEvent.h"
12 #include "ui/events/gesture_detection/filtered_gesture_provider.h" 12 #include "ui/events/gesture_detection/filtered_gesture_provider.h"
13 #include "ui/gfx/size_f.h" 13 #include "ui/gfx/size_f.h"
14 14
15 namespace content { 15 namespace content {
16 16
17 // Emulates touch input with mouse and keyboard. 17 // Emulates touch input with mouse and keyboard.
18 class CONTENT_EXPORT TouchEmulator : public ui::GestureProviderClient { 18 class CONTENT_EXPORT TouchEmulator : public ui::GestureProviderClient {
19 public: 19 public:
20 explicit TouchEmulator(TouchEmulatorClient* client); 20 explicit TouchEmulator(TouchEmulatorClient* client);
21 virtual ~TouchEmulator(); 21 ~TouchEmulator() override;
22 22
23 void Enable(); 23 void Enable();
24 void Disable(); 24 void Disable();
25 25
26 // Note that TouchEmulator should always listen to touch events and their acks 26 // Note that TouchEmulator should always listen to touch events and their acks
27 // (even in disabled state) to track native stream presence. 27 // (even in disabled state) to track native stream presence.
28 bool enabled() const { return enabled_; } 28 bool enabled() const { return enabled_; }
29 29
30 // Returns |true| if the event was consumed. Consumed event should not 30 // Returns |true| if the event was consumed. Consumed event should not
31 // propagate any further. 31 // propagate any further.
32 // TODO(dgozman): maybe pass latency info together with events. 32 // TODO(dgozman): maybe pass latency info together with events.
33 bool HandleMouseEvent(const blink::WebMouseEvent& event); 33 bool HandleMouseEvent(const blink::WebMouseEvent& event);
34 bool HandleMouseWheelEvent(const blink::WebMouseWheelEvent& event); 34 bool HandleMouseWheelEvent(const blink::WebMouseWheelEvent& event);
35 bool HandleKeyboardEvent(const blink::WebKeyboardEvent& event); 35 bool HandleKeyboardEvent(const blink::WebKeyboardEvent& event);
36 bool HandleTouchEvent(const blink::WebTouchEvent& event); 36 bool HandleTouchEvent(const blink::WebTouchEvent& event);
37 37
38 // Returns |true| if the event ack was consumed. Consumed ack should not 38 // Returns |true| if the event ack was consumed. Consumed ack should not
39 // propagate any further. 39 // propagate any further.
40 bool HandleTouchEventAck(const blink::WebTouchEvent& event, 40 bool HandleTouchEventAck(const blink::WebTouchEvent& event,
41 InputEventAckState ack_result); 41 InputEventAckState ack_result);
42 42
43 // Cancel any touches, for example, when focus is lost. 43 // Cancel any touches, for example, when focus is lost.
44 void CancelTouch(); 44 void CancelTouch();
45 45
46 private: 46 private:
47 // ui::GestureProviderClient implementation. 47 // ui::GestureProviderClient implementation.
48 virtual void OnGestureEvent(const ui::GestureEventData& gesture) override; 48 void OnGestureEvent(const ui::GestureEventData& gesture) override;
49 49
50 // Returns cursor size in DIP. 50 // Returns cursor size in DIP.
51 gfx::SizeF InitCursorFromResource( 51 gfx::SizeF InitCursorFromResource(
52 WebCursor* cursor, float scale, int resource_id); 52 WebCursor* cursor, float scale, int resource_id);
53 void ResetState(); 53 void ResetState();
54 void UpdateCursor(); 54 void UpdateCursor();
55 bool UpdateShiftPressed(bool shift_pressed); 55 bool UpdateShiftPressed(bool shift_pressed);
56 56
57 // Whether we should convert scrolls into pinches. 57 // Whether we should convert scrolls into pinches.
58 bool InPinchGestureMode() const; 58 bool InPinchGestureMode() const;
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104 // The cumulative scale change from the start of pinch gesture. 104 // The cumulative scale change from the start of pinch gesture.
105 float pinch_scale_; 105 float pinch_scale_;
106 bool pinch_gesture_active_; 106 bool pinch_gesture_active_;
107 107
108 DISALLOW_COPY_AND_ASSIGN(TouchEmulator); 108 DISALLOW_COPY_AND_ASSIGN(TouchEmulator);
109 }; 109 };
110 110
111 } // namespace content 111 } // namespace content
112 112
113 #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EMULATOR_H_ 113 #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EMULATOR_H_
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