third_party/WebKit/Source/core/page/AutoscrollController.h - Issue 2289213002: Implement Middle Click Autoscroll on all platforms not just Windows

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Issue 2289213002: Implement Middle Click Autoscroll on all platforms not just Windows (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Merge branch 'master' of https://chromium.googlesource.com/chromium/src into panscroll Created 4 years, 3 months ago

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1 /*	1 /*

2 * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.	2 * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.

3 *	3 *

4 * Redistribution and use in source and binary forms, with or without	4 * Redistribution and use in source and binary forms, with or without

5 * modification, are permitted provided that the following conditions	5 * modification, are permitted provided that the following conditions

6 * are met:	6 * are met:

7 * 1. Redistributions of source code must retain the above copyright	7 * 1. Redistributions of source code must retain the above copyright

8 * notice, this list of conditions and the following disclaimer.	8 * notice, this list of conditions and the following disclaimer.

9 * 2. Redistributions in binary form must reproduce the above copyright	9 * 2. Redistributions in binary form must reproduce the above copyright

10 * notice, this list of conditions and the following disclaimer in the	10 * notice, this list of conditions and the following disclaimer in the

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37 class Node;	37 class Node;

38 class Page;	38 class Page;

39 class PlatformMouseEvent;	39 class PlatformMouseEvent;

40 class LayoutBox;	40 class LayoutBox;

41 class LayoutObject;	41 class LayoutObject;

42	42

43 enum AutoscrollType {	43 enum AutoscrollType {

44 NoAutoscroll,	44 NoAutoscroll,

45 AutoscrollForDragAndDrop,	45 AutoscrollForDragAndDrop,

46 AutoscrollForSelection,	46 AutoscrollForSelection,

47 #if OS(WIN)	47 AutoscrollForMiddleClickCanStop,

48 AutoscrollForPanCanStop,	48 AutoscrollForMiddleClick,

49 AutoscrollForPan,

50 #endif

51 };	49 };

52	50

53 // AutscrollController handels autoscroll and pan scroll for EventHandler.	51 // AutscrollController handels autoscroll and middle click autoscroll for EventH andler.

54 class CORE_EXPORT AutoscrollController final : public GarbageCollected<Autoscrol lController> {	52 class CORE_EXPORT AutoscrollController final : public GarbageCollected<Autoscrol lController> {

55 public:	53 public:

56 static AutoscrollController* create(Page&);	54 static AutoscrollController* create(Page&);

57 DECLARE_TRACE();	55 DECLARE_TRACE();

58	56

59 static const int noPanScrollRadius = 15;	57 static const int noMiddleClickAutoscrollRadius = 15;

60	58

61 void animate(double monotonicFrameBeginTime);	59 void animate(double monotonicFrameBeginTime);

62 bool autoscrollInProgress() const;	60 bool autoscrollInProgress() const;

63 bool autoscrollInProgress(const LayoutBox*) const;	61 bool autoscrollInProgress(const LayoutBox*) const;

64 bool panScrollInProgress() const;	62 bool middleClickAutoscrollInProgress() const;

65 void startAutoscrollForSelection(LayoutObject*);	63 void startAutoscrollForSelection(LayoutObject*);

66 void stopAutoscroll();	64 void stopAutoscroll();

67 void stopAutoscrollIfNeeded(LayoutObject*);	65 void stopAutoscrollIfNeeded(LayoutObject*);

68 void updateAutoscrollLayoutObject();	66 void updateAutoscrollLayoutObject();

69 void updateDragAndDrop(Node* targetNode, const IntPoint& eventPosition, doub le eventTime);	67 void updateDragAndDrop(Node* targetNode, const IntPoint& eventPosition, doub le eventTime);

70 #if OS(WIN)	68 void handleMouseReleaseForMiddleClickAutoscroll(LocalFrame*, const PlatformM ouseEvent&);

71 void handleMouseReleaseForPanScrolling(LocalFrame*, const PlatformMouseEvent &);	69 void startMiddleClickAutoscroll(LayoutBox*, const IntPoint&);

72 void startPanScrolling(LayoutBox*, const IntPoint&);

73 #endif

74	70

75 private:	71 private:

76 explicit AutoscrollController(Page&);	72 explicit AutoscrollController(Page&);

77	73

78 void startAutoscroll();	74 void startAutoscroll();

79	75

80 #if OS(WIN)	76 void updateMiddleClickAutoscrollState(FrameView*, const IntPoint& lastKnownM ousePosition);

81 void updatePanScrollState(FrameView*, const IntPoint& lastKnownMousePosition );

82 #endif

83	77

84 Member<Page> m_page;	78 Member<Page> m_page;

85 LayoutBox* m_autoscrollLayoutObject;	79 LayoutBox* m_autoscrollLayoutObject;

86 LayoutBox* m_pressedLayoutObject;	80 LayoutBox* m_pressedLayoutObject;

87 AutoscrollType m_autoscrollType;	81 AutoscrollType m_autoscrollType;

88 IntPoint m_dragAndDropAutoscrollReferencePosition;	82 IntPoint m_dragAndDropAutoscrollReferencePosition;

89 double m_dragAndDropAutoscrollStartTime;	83 double m_dragAndDropAutoscrollStartTime;

90 #if OS(WIN)	84 IntPoint m_middleClickAutoscrollStartPos;

91 IntPoint m_panScrollStartPos;

92 #endif

93 };	85 };

94	86

95 } // namespace blink	87 } // namespace blink

96	88

97 #endif // AutoscrollController_h	89 #endif // AutoscrollController_h

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