third_party/WebKit/Source/core/events/WebInputEventConversion.h

/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
 *
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * this software without specific prior written permission.
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#ifndef WebInputEventConversion_h
#define WebInputEventConversion_h

#include <vector>
#include "core/CoreExport.h"
#include "platform/scroll/ScrollTypes.h"
#include "platform/wtf/Compiler.h"
#include "public/platform/WebCoalescedInputEvent.h"
#include "public/platform/WebInputEvent.h"
#include "public/platform/WebKeyboardEvent.h"
#include "public/platform/WebMouseWheelEvent.h"
#include "public/platform/WebPointerEvent.h"
#include "public/platform/WebTouchEvent.h"

namespace blink {

class KeyboardEvent;
class LayoutObject;
class LocalFrameView;
class MouseEvent;
class TouchEvent;
class WebGestureEvent;
class WebKeyboardEvent;

// These classes are used for conversion from Blink events to WebInputEvents
// (for plugins).

class CORE_EXPORT WebMouseEventBuilder : public WebMouseEvent {
 public:
  // Converts a MouseEvent to a corresponding WebMouseEvent.
  // NOTE: This is only implemented for mousemove, mouseover, mouseout,
  // mousedown and mouseup. If the event mapping fails, the event type will
  // be set to Undefined.
  WebMouseEventBuilder(const LocalFrameView*,
                       const LayoutObject*,
                       const MouseEvent&);
  WebMouseEventBuilder(const LocalFrameView*,
                       const LayoutObject*,
                       const TouchEvent&);
};

// Converts a KeyboardEvent to a corresponding WebKeyboardEvent.
// NOTE: For KeyboardEvent, this is only implemented for keydown,
// keyup, and keypress. If the event mapping fails, the event type will be set
// to Undefined.
class CORE_EXPORT WebKeyboardEventBuilder : public WebKeyboardEvent {
 public:
  WebKeyboardEventBuilder(const KeyboardEvent&);
};

// Converts a TouchEvent to a corresponding WebTouchEvent.
// NOTE: WebTouchEvents have a cap on the number of WebTouchPoints. Any points
// exceeding that cap will be dropped.
class CORE_EXPORT WebTouchEventBuilder : public WebTouchEvent {
 public:
  WebTouchEventBuilder(const LayoutObject*, const TouchEvent&);
};

// Return a new transformed WebGestureEvent by applying the Widget's scale
// and translation.
CORE_EXPORT WebGestureEvent TransformWebGestureEvent(LocalFrameView*,
                                                     const WebGestureEvent&);
CORE_EXPORT WebMouseEvent TransformWebMouseEvent(LocalFrameView*,
                                                 const WebMouseEvent&);

CORE_EXPORT WebMouseWheelEvent
TransformWebMouseWheelEvent(LocalFrameView*, const WebMouseWheelEvent&);

CORE_EXPORT WebPointerEvent TransformWebPointerEvent(LocalFrameView*,
                                                     const WebPointerEvent&);

Vector<WebMouseEvent> CORE_EXPORT
TransformWebMouseEventVector(LocalFrameView*,
                             const std::vector<const WebInputEvent*>&);
Vector<WebPointerEvent> CORE_EXPORT
TransformWebPointerEventVector(LocalFrameView*,
                               const std::vector<const WebInputEvent*>&);

WebCoalescedInputEvent CORE_EXPORT
GetCoalescedWebPointerEventForTouch(const WebPointerEvent&,
                                    std::vector<const WebInputEvent*>);

}  // namespace blink

#endif