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/*
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
* Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_EVENTS_MOUSE_EVENT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EVENTS_MOUSE_EVENT_H_
#include "third_party/blink/public/common/input/web_menu_source_type.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/events/simulated_click_options.h"
#include "third_party/blink/renderer/core/events/ui_event_with_key_state.h"
#include "third_party/blink/renderer/platform/geometry/double_point.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
#include "third_party/blink/renderer/platform/wtf/casting.h"
namespace blink {
class DataTransfer;
class EventDispatcher;
class MouseEventInit;
class CORE_EXPORT MouseEvent : public UIEventWithKeyState {
DEFINE_WRAPPERTYPEINFO();
public:
enum SyntheticEventType {
// Real mouse input events or synthetic events that behave just like real
// events
kRealOrIndistinguishable,
// Synthetic mouse events derived from touch input
kFromTouch,
// Synthetic mouse events generated without a position, for example those
// generated from keyboard input.
kPositionless,
};
static MouseEvent* Create() { return MakeGarbageCollected<MouseEvent>(); }
static MouseEvent* Create(const AtomicString& event_type,
const MouseEventInit*,
base::TimeTicks platform_time_stamp,
SyntheticEventType,
WebMenuSourceType);
static MouseEvent* Create(ScriptState*,
const AtomicString& event_type,
const MouseEventInit*);
static MouseEvent* Create(const AtomicString& event_type,
AbstractView*,
const Event* underlying_event,
SimulatedClickCreationScope);
MouseEvent(const AtomicString& type,
const MouseEventInit*,
base::TimeTicks platform_time_stamp,
SyntheticEventType = kRealOrIndistinguishable,
WebMenuSourceType = kMenuSourceNone);
MouseEvent(const AtomicString& type, const MouseEventInit* init)
: MouseEvent(type, init, base::TimeTicks::Now()) {}
MouseEvent();
~MouseEvent() override;
static uint16_t WebInputEventModifiersToButtons(unsigned modifiers);
static void SetCoordinatesFromWebPointerProperties(
const WebPointerProperties&,
const LocalDOMWindow*,
MouseEventInit*);
void initMouseEvent(ScriptState*,
const AtomicString& type,
bool bubbles,
bool cancelable,
AbstractView*,
int detail,
int screen_x,
int screen_y,
int client_x,
int client_y,
bool ctrl_key,
bool alt_key,
bool shift_key,
bool meta_key,
int16_t button,
EventTarget* related_target,
uint16_t buttons = 0);
// WinIE uses 1,4,2 for left/middle/right but not for click (just for
// mousedown/up, maybe others), but we will match the standard DOM.
virtual int16_t button() const;
uint16_t buttons() const { return buttons_; }
bool ButtonDown() const { return button_ != -1; }
EventTarget* relatedTarget() const { return related_target_.Get(); }
void SetRelatedTarget(EventTarget* related_target) {
related_target_ = related_target;
}
SyntheticEventType GetSyntheticEventType() const {
return synthetic_event_type_;
}
const String& region() const { return region_; }
virtual Node* toElement() const;
virtual Node* fromElement() const;
virtual DataTransfer* getDataTransfer() const { return nullptr; }
bool FromTouch() const { return synthetic_event_type_ == kFromTouch; }
const AtomicString& InterfaceName() const override;
bool IsMouseEvent() const override;
unsigned which() const override;
int ClickCount() { return detail(); }
enum class PositionType {
kPosition,
// Positionless mouse events are used, for example, for 'click' events from
// keyboard input. It's kind of surprising for a mouse event not to have a
// position.
kPositionless
};
// Note that these values are adjusted to counter the effects of zoom, so that
// values exposed via DOM APIs are invariant under zooming.
virtual double screenX() const {
return static_cast<int>(screen_location_.X());
}
virtual double screenY() const {
return static_cast<int>(screen_location_.Y());
}
virtual double clientX() const {
return static_cast<int>(client_location_.X());
}
virtual double clientY() const {
return static_cast<int>(client_location_.Y());
}
int movementX() const { return movement_delta_.X(); }
int movementY() const { return movement_delta_.Y(); }
int layerX();
int layerY();
virtual double offsetX() const;
virtual double offsetY() const;
virtual double pageX() const { return static_cast<int>(page_location_.X()); }
virtual double pageY() const { return static_cast<int>(page_location_.Y()); }
double x() const { return clientX(); }
double y() const { return clientY(); }
bool HasPosition() const { return position_type_ == PositionType::kPosition; }
WebMenuSourceType GetMenuSourceType() const { return menu_source_type_; }
// Page point in "absolute" coordinates (i.e. post-zoomed, page-relative
// coords, usable with LayoutObject::absoluteToLocal) relative to view(),
// i.e. the local frame.
const DoublePoint& AbsoluteLocation() const { return absolute_location_; }
DispatchEventResult DispatchEvent(EventDispatcher&) override;
void Trace(Visitor*) override;
DoublePoint screen_location_;
DoublePoint client_location_;
DoublePoint page_location_; // zoomed CSS pixels
DoublePoint offset_location_; // zoomed CSS pixels
protected:
int16_t RawButton() const { return button_; }
void ReceivedTarget() override;
void ComputeRelativePosition();
bool has_cached_relative_position_ = false;
private:
void InitMouseEventInternal(const AtomicString& type,
bool bubbles,
bool cancelable,
AbstractView*,
int detail,
double screen_x,
double screen_y,
double client_x,
double client_y,
WebInputEvent::Modifiers,
int16_t button,
EventTarget* related_target,
InputDeviceCapabilities* source_capabilities,
uint16_t buttons = 0);
void InitCoordinates(const double client_x, const double client_y);
void ComputePageLocation();
DoublePoint movement_delta_;
DoublePoint layer_location_; // zoomed CSS pixels
DoublePoint absolute_location_; // (un-zoomed) FrameView content space
PositionType position_type_;
int16_t button_;
uint16_t buttons_;
Member<EventTarget> related_target_;
SyntheticEventType synthetic_event_type_;
String region_;
// Only used for contextmenu events.
WebMenuSourceType menu_source_type_;
};
template <>
struct DowncastTraits<MouseEvent> {
static bool AllowFrom(const Event& event) { return event.IsMouseEvent(); }
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_EVENTS_MOUSE_EVENT_H_
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