blob: 3f3b19a195007ce5e8d4c479c37748e74f5f9fba [file] [log] [blame]
/*
* Copyright (C) 2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "PlatformWheelEvent.h"
#include "Scrollbar.h"
#include <wtf/text/TextStream.h>
#if ENABLE(MAC_GESTURE_EVENTS)
#include "PlatformGestureEventMac.h"
#endif
namespace WebCore {
#if ENABLE(MAC_GESTURE_EVENTS)
PlatformWheelEvent PlatformWheelEvent::createFromGesture(const PlatformGestureEvent& platformGestureEvent, double deltaY)
{
// This tries to match as much of the behavior of `WebKit::WebEventFactory::createWebWheelEvent` as
// possible assuming `-[NSEvent hasPreciseScrollingDeltas]` and no `-[NSEvent _scrollCount]`.
double deltaX = 0;
double wheelTicksX = 0;
double wheelTicksY = deltaY / static_cast<float>(Scrollbar::pixelsPerLineStep());
bool shiftKey = platformGestureEvent.modifiers().contains(PlatformEvent::Modifier::ShiftKey);
bool ctrlKey = true;
bool altKey = platformGestureEvent.modifiers().contains(PlatformEvent::Modifier::AltKey);
bool metaKey = platformGestureEvent.modifiers().contains(PlatformEvent::Modifier::MetaKey);
PlatformWheelEvent platformWheelEvent(platformGestureEvent.pos(), platformGestureEvent.globalPosition(), deltaX, deltaY, wheelTicksX, wheelTicksY, ScrollByPixelWheelEvent, shiftKey, ctrlKey, altKey, metaKey);
// PlatformEvent
platformWheelEvent.m_timestamp = platformGestureEvent.timestamp();
// PlatformWheelEvent
platformWheelEvent.m_hasPreciseScrollingDeltas = true;
#if ENABLE(KINETIC_SCROLLING)
switch (platformGestureEvent.type()) {
case PlatformEvent::GestureStart:
platformWheelEvent.m_phase = PlatformWheelEventPhase::Began;
break;
case PlatformEvent::GestureChange:
platformWheelEvent.m_phase = PlatformWheelEventPhase::Changed;
break;
case PlatformEvent::GestureEnd:
platformWheelEvent.m_phase = PlatformWheelEventPhase::Ended;
break;
default:
ASSERT_NOT_REACHED();
break;
}
#endif // ENABLE(KINETIC_SCROLLING)
#if PLATFORM(COCOA)
platformWheelEvent.m_ioHIDEventTimestamp = platformWheelEvent.m_timestamp;
platformWheelEvent.m_rawPlatformDelta = platformWheelEvent.m_rawPlatformDelta;
platformWheelEvent.m_unacceleratedScrollingDeltaY = deltaY;
#endif // PLATFORM(COCOA)
return platformWheelEvent;
}
#endif // ENABLE(MAC_GESTURE_EVENTS)
#if ENABLE(KINETIC_SCROLLING)
TextStream& operator<<(TextStream& ts, PlatformWheelEventPhase phase)
{
switch (phase) {
case PlatformWheelEventPhase::None: ts << "none"; break;
case PlatformWheelEventPhase::Began: ts << "began"; break;
case PlatformWheelEventPhase::Stationary: ts << "stationary"; break;
case PlatformWheelEventPhase::Changed: ts << "changed"; break;
case PlatformWheelEventPhase::Ended: ts << "ended"; break;
case PlatformWheelEventPhase::Cancelled: ts << "cancelled"; break;
case PlatformWheelEventPhase::MayBegin: ts << "mayBegin"; break;
}
return ts;
}
#endif
TextStream& operator<<(TextStream& ts, const PlatformWheelEvent& event)
{
ts << "PlatformWheelEvent " << &event << " at " << event.position() << " deltaX " << event.deltaX() << " deltaY " << event.deltaY();
#if ENABLE(KINETIC_SCROLLING)
ts << " phase \"" << event.phase() << "\" momentum phase \"" << event.momentumPhase() << "\"";
#endif
ts << " velocity " << event.scrollingVelocity();
return ts;
}
TextStream& operator<<(TextStream& ts, WheelEventProcessingSteps steps)
{
switch (steps) {
case WheelEventProcessingSteps::ScrollingThread: ts << "scrolling thread"; break;
case WheelEventProcessingSteps::MainThreadForScrolling: ts << "main thread scrolling"; break;
case WheelEventProcessingSteps::MainThreadForNonBlockingDOMEventDispatch: ts << "main thread non-blocking DOM event dispatch"; break;
case WheelEventProcessingSteps::MainThreadForBlockingDOMEventDispatch: ts << "main thread blocking DOM event dispatch"; break;
}
return ts;
}
TextStream& operator<<(TextStream& ts, EventHandling steps)
{
switch (steps) {
case EventHandling::DispatchedToDOM: ts << "dispatched to DOM"; break;
case EventHandling::DefaultPrevented: ts << "default prevented"; break;
case EventHandling::DefaultHandled: ts << "default handled"; break;
}
return ts;
}
TextStream& operator<<(TextStream& ts, WheelScrollGestureState state)
{
switch (state) {
case WheelScrollGestureState::Blocking: ts << "blocking"; break;
case WheelScrollGestureState::NonBlocking: ts << "non-blocking"; break;
}
return ts;
}
} // namespace WebCore