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