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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, 2005, 2006, 2008, 2013 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.
*/
#include "config.h"
#include "MouseRelatedEvent.h"
#include "Document.h"
#include "EventNames.h"
#include "LayoutPoint.h"
#include "LocalDOMWindow.h"
#include "LocalFrame.h"
#include "LocalFrameView.h"
#include "RenderLayer.h"
#include "RenderObject.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(MouseRelatedEvent);
MouseRelatedEvent::MouseRelatedEvent(const AtomString& eventType, CanBubble canBubble, IsCancelable isCancelable, IsComposed isComposed,
MonotonicTime timestamp, RefPtr<WindowProxy>&& view, int detail,
const IntPoint& screenLocation, const IntPoint& windowLocation, double movementX, double movementY, OptionSet<Modifier> modifiers, IsSimulated isSimulated, IsTrusted isTrusted)
: UIEventWithKeyState(eventType, canBubble, isCancelable, isComposed, timestamp, WTFMove(view), detail, modifiers, isTrusted)
, m_screenLocation(screenLocation)
, m_movementX(movementX)
, m_movementY(movementY)
, m_isSimulated(isSimulated == IsSimulated::Yes)
{
init(m_isSimulated, windowLocation);
}
MouseRelatedEvent::MouseRelatedEvent(const AtomString& type, IsCancelable isCancelable, MonotonicTime timestamp, RefPtr<WindowProxy>&& view, const IntPoint& globalLocation, OptionSet<Modifier> modifiers)
: MouseRelatedEvent(type, CanBubble::Yes, isCancelable, IsComposed::Yes, timestamp,
WTFMove(view), 0, globalLocation, globalLocation /* Converted in init */, 0, 0, modifiers, IsSimulated::No)
{
}
MouseRelatedEvent::MouseRelatedEvent(const AtomString& eventType, const MouseRelatedEventInit& initializer, IsTrusted isTrusted)
: UIEventWithKeyState(eventType, initializer)
, m_screenLocation(IntPoint(initializer.screenX, initializer.screenY))
, m_movementX(initializer.movementX)
, m_movementY(initializer.movementY)
{
ASSERT_UNUSED(isTrusted, isTrusted == IsTrusted::No);
init(false, IntPoint(0, 0));
}
static inline bool isMoveEventType(const AtomString& eventType)
{
auto& eventNames = WebCore::eventNames();
return eventType == eventNames.mousemoveEvent
|| eventType == eventNames.pointermoveEvent
|| eventType == eventNames.touchmoveEvent;
}
void MouseRelatedEvent::init(bool isSimulated, const IntPoint& windowLocation)
{
if (!isSimulated) {
if (auto* frameView = frameViewFromWindowProxy(view())) {
FloatPoint absolutePoint = frameView->windowToContents(windowLocation);
FloatPoint documentPoint = frameView->absoluteToDocumentPoint(absolutePoint);
m_pageLocation = flooredLayoutPoint(documentPoint);
m_clientLocation = pagePointToClientPoint(m_pageLocation, frameView);
}
}
initCoordinates();
if (!isConstructedFromInitializer() && !isMoveEventType(type())) {
m_movementX = 0;
m_movementY = 0;
}
}
void MouseRelatedEvent::initCoordinates()
{
// Set up initial values for coordinates.
// Correct values are computed lazily, see computeRelativePosition.
m_layerLocation = m_pageLocation;
m_offsetLocation = m_pageLocation;
computePageLocation();
m_hasCachedRelativePosition = false;
}
LocalFrameView* MouseRelatedEvent::frameViewFromWindowProxy(WindowProxy* windowProxy)
{
if (!windowProxy || !is<LocalDOMWindow>(windowProxy->window()))
return nullptr;
auto* frame = downcast<LocalDOMWindow>(*windowProxy->window()).frame();
return frame ? frame->view() : nullptr;
}
LayoutPoint MouseRelatedEvent::pagePointToClientPoint(LayoutPoint pagePoint, LocalFrameView* frameView)
{
if (!frameView)
return pagePoint;
return flooredLayoutPoint(frameView->documentToClientPoint(pagePoint));
}
LayoutPoint MouseRelatedEvent::pagePointToAbsolutePoint(LayoutPoint pagePoint, LocalFrameView* frameView)
{
if (!frameView)
return pagePoint;
return pagePoint.scaled(frameView->documentToAbsoluteScaleFactor());
}
void MouseRelatedEvent::initCoordinates(const LayoutPoint& clientLocation)
{
// Set up initial values for coordinates.
// Correct values are computed lazily, see computeRelativePosition.
FloatSize documentToClientOffset;
if (auto* frameView = frameViewFromWindowProxy(view()))
documentToClientOffset = frameView->documentToClientOffset();
m_clientLocation = clientLocation;
m_pageLocation = clientLocation - LayoutSize(documentToClientOffset);
m_layerLocation = m_pageLocation;
m_offsetLocation = m_pageLocation;
computePageLocation();
m_hasCachedRelativePosition = false;
}
float MouseRelatedEvent::documentToAbsoluteScaleFactor() const
{
if (auto* frameView = frameViewFromWindowProxy(view()))
return frameView->documentToAbsoluteScaleFactor();
return 1;
}
void MouseRelatedEvent::computePageLocation()
{
m_absoluteLocation = pagePointToAbsolutePoint(m_pageLocation, frameViewFromWindowProxy(view()));
}
void MouseRelatedEvent::receivedTarget()
{
m_hasCachedRelativePosition = false;
}
void MouseRelatedEvent::computeRelativePosition()
{
if (!is<Node>(target()))
return;
auto& targetNode = downcast<Node>(*target());
// Compute coordinates that are based on the target.
m_layerLocation = m_pageLocation;
m_offsetLocation = m_pageLocation;
// Must have an updated render tree for this math to work correctly.
targetNode.document().updateLayoutIgnorePendingStylesheets();
// Adjust offsetLocation to be relative to the target's position.
if (RenderObject* r = targetNode.renderer()) {
m_offsetLocation = LayoutPoint(r->absoluteToLocal(absoluteLocation(), UseTransforms));
float scaleFactor = 1 / documentToAbsoluteScaleFactor();
if (scaleFactor != 1.0f)
m_offsetLocation.scale(scaleFactor);
}
// Adjust layerLocation to be relative to the layer.
// FIXME: event.layerX and event.layerY are poorly defined,
// and probably don't always correspond to RenderLayer offsets.
// https://bugs.webkit.org/show_bug.cgi?id=21868
Node* n = &targetNode;
while (n && !n->renderer())
n = n->parentNode();
RenderLayer* layer;
if (n && (layer = n->renderer()->enclosingLayer())) {
for (; layer; layer = layer->parent()) {
m_layerLocation -= toLayoutSize(layer->location());
}
}
m_hasCachedRelativePosition = true;
}
FloatPoint MouseRelatedEvent::locationInRootViewCoordinates() const
{
if (auto* frameView = frameViewFromWindowProxy(view()))
return frameView->contentsToRootView(roundedIntPoint(m_absoluteLocation));
return m_absoluteLocation;
}
int MouseRelatedEvent::layerX()
{
if (!m_hasCachedRelativePosition)
computeRelativePosition();
return m_layerLocation.x();
}
int MouseRelatedEvent::layerY()
{
if (!m_hasCachedRelativePosition)
computeRelativePosition();
return m_layerLocation.y();
}
int MouseRelatedEvent::offsetX()
{
if (isSimulated())
return 0;
if (!m_hasCachedRelativePosition)
computeRelativePosition();
return roundToInt(m_offsetLocation.x());
}
int MouseRelatedEvent::offsetY()
{
if (isSimulated())
return 0;
if (!m_hasCachedRelativePosition)
computeRelativePosition();
return roundToInt(m_offsetLocation.y());
}
int MouseRelatedEvent::pageX() const
{
return m_pageLocation.x();
}
int MouseRelatedEvent::pageY() const
{
return m_pageLocation.y();
}
const LayoutPoint& MouseRelatedEvent::pageLocation() const
{
return m_pageLocation;
}
int MouseRelatedEvent::x() const
{
// FIXME: This is not correct.
// See Microsoft documentation and <http://www.quirksmode.org/dom/w3c_events.html>.
return m_clientLocation.x();
}
int MouseRelatedEvent::y() const
{
// FIXME: This is not correct.
// See Microsoft documentation and <http://www.quirksmode.org/dom/w3c_events.html>.
return m_clientLocation.y();
}
} // namespace WebCore
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