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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/events/pointer_event.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_pointer_event_init.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/dom/events/event_dispatcher.h"
#include "third_party/blink/renderer/core/dom/events/event_path.h"
namespace blink {
PointerEvent::PointerEvent(const AtomicString& type,
const PointerEventInit* initializer,
base::TimeTicks platform_time_stamp,
MouseEvent::SyntheticEventType synthetic_event_type,
WebMenuSourceType menu_source_type)
: MouseEvent(type,
initializer,
platform_time_stamp,
synthetic_event_type,
menu_source_type),
pointer_id_(0),
width_(0),
height_(0),
pressure_(0),
tilt_x_(0),
tilt_y_(0),
tangential_pressure_(0),
twist_(0),
is_primary_(false),
coalesced_events_targets_dirty_(false),
predicted_events_targets_dirty_(false) {
if (initializer->hasPointerId())
pointer_id_ = initializer->pointerId();
if (initializer->hasWidth())
width_ = initializer->width();
if (initializer->hasHeight())
height_ = initializer->height();
if (initializer->hasPressure())
pressure_ = initializer->pressure();
if (initializer->hasTiltX())
tilt_x_ = initializer->tiltX();
if (initializer->hasTiltY())
tilt_y_ = initializer->tiltY();
if (initializer->hasTangentialPressure())
tangential_pressure_ = initializer->tangentialPressure();
if (initializer->hasTwist())
twist_ = initializer->twist();
if (initializer->hasPointerType())
pointer_type_ = initializer->pointerType();
if (initializer->hasIsPrimary())
is_primary_ = initializer->isPrimary();
if (initializer->hasCoalescedEvents()) {
for (auto coalesced_event : initializer->coalescedEvents())
coalesced_events_.push_back(coalesced_event);
}
if (initializer->hasPredictedEvents()) {
for (auto predicted_event : initializer->predictedEvents())
predicted_events_.push_back(predicted_event);
}
}
bool PointerEvent::IsMouseEvent() const {
if (RuntimeEnabledFeatures::ClickPointerEventEnabled() &&
(type() == event_type_names::kClick ||
type() == event_type_names::kAuxclick ||
type() == event_type_names::kContextmenu)) {
return true;
}
return false;
}
bool PointerEvent::IsPointerEvent() const {
return true;
}
double PointerEvent::offsetX() const {
if (!HasPosition())
return 0;
if (!has_cached_relative_position_)
const_cast<PointerEvent*>(this)->ComputeRelativePosition();
return offset_location_.X();
}
double PointerEvent::offsetY() const {
if (!HasPosition())
return 0;
if (!has_cached_relative_position_)
const_cast<PointerEvent*>(this)->ComputeRelativePosition();
return offset_location_.Y();
}
void PointerEvent::ReceivedTarget() {
coalesced_events_targets_dirty_ = true;
predicted_events_targets_dirty_ = true;
MouseEvent::ReceivedTarget();
}
Node* PointerEvent::toElement() const {
return nullptr;
}
Node* PointerEvent::fromElement() const {
return nullptr;
}
HeapVector<Member<PointerEvent>> PointerEvent::getCoalescedEvents() {
if (coalesced_events_targets_dirty_) {
for (auto coalesced_event : coalesced_events_)
coalesced_event->SetTarget(target());
coalesced_events_targets_dirty_ = false;
}
return coalesced_events_;
}
HeapVector<Member<PointerEvent>> PointerEvent::getPredictedEvents() {
if (predicted_events_targets_dirty_) {
for (auto predicted_event : predicted_events_)
predicted_event->SetTarget(target());
predicted_events_targets_dirty_ = false;
}
return predicted_events_;
}
base::TimeTicks PointerEvent::OldestPlatformTimeStamp() const {
if (coalesced_events_.size() > 0) {
// Assume that time stamps of coalesced events are in ascending order.
return coalesced_events_[0]->PlatformTimeStamp();
}
return this->PlatformTimeStamp();
}
void PointerEvent::Trace(Visitor* visitor) {
visitor->Trace(coalesced_events_);
visitor->Trace(predicted_events_);
MouseEvent::Trace(visitor);
}
DispatchEventResult PointerEvent::DispatchEvent(EventDispatcher& dispatcher) {
if (type().IsEmpty())
return DispatchEventResult::kNotCanceled; // Shouldn't happen.
if (RuntimeEnabledFeatures::ClickPointerEventEnabled() &&
type() == event_type_names::kClick) {
// The MouseEvent::DispatchEvent will take care of sending dblclick event if
// needed.
return MouseEvent::DispatchEvent(dispatcher);
}
DCHECK(!target() || target() != relatedTarget());
GetEventPath().AdjustForRelatedTarget(dispatcher.GetNode(), relatedTarget());
return dispatcher.Dispatch();
}
} // namespace blink
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