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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 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 "DOMWindow.h"
#include "Document.h"
#include "Frame.h"
#include "FrameView.h"
#include "RenderLayer.h"
#include "RenderObject.h"
namespace WebCore {
MouseRelatedEvent::MouseRelatedEvent()
: m_screenX(0)
, m_screenY(0)
, m_clientX(0)
, m_clientY(0)
, m_pageX(0)
, m_pageY(0)
, m_layerX(0)
, m_layerY(0)
, m_offsetX(0)
, m_offsetY(0)
, m_isSimulated(false)
{
}
static int contentsX(AbstractView* abstractView)
{
if (!abstractView)
return 0;
Frame* frame = abstractView->frame();
if (!frame)
return 0;
FrameView* frameView = frame->view();
if (!frameView)
return 0;
return frameView->scrollX() / frame->pageZoomFactor();
}
static int contentsY(AbstractView* abstractView)
{
if (!abstractView)
return 0;
Frame* frame = abstractView->frame();
if (!frame)
return 0;
FrameView* frameView = frame->view();
if (!frameView)
return 0;
return frameView->scrollY() / frame->pageZoomFactor();
}
MouseRelatedEvent::MouseRelatedEvent(const AtomicString& eventType, bool canBubble, bool cancelable, PassRefPtr<AbstractView> viewArg,
int detail, int screenX, int screenY, int pageX, int pageY,
bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool isSimulated)
: UIEventWithKeyState(eventType, canBubble, cancelable, viewArg, detail, ctrlKey, altKey, shiftKey, metaKey)
, m_screenX(screenX)
, m_screenY(screenY)
, m_clientX(pageX - contentsX(view()))
, m_clientY(pageY - contentsY(view()))
, m_pageX(pageX)
, m_pageY(pageY)
, m_isSimulated(isSimulated)
{
initCoordinates();
}
void MouseRelatedEvent::initCoordinates()
{
// Set up initial values for coordinates.
// Correct values can't be computed until we have at target, so receivedTarget
// does the "real" computation.
m_layerX = m_pageX;
m_layerY = m_pageY;
m_offsetX = m_pageX;
m_offsetY = m_pageY;
computePageLocation();
}
void MouseRelatedEvent::initCoordinates(int clientX, int clientY)
{
// Set up initial values for coordinates.
// Correct values can't be computed until we have at target, so receivedTarget
// does the "real" computation.
m_clientX = clientX;
m_clientY = clientY;
m_pageX = clientX + contentsX(view());
m_pageY = clientY + contentsY(view());
m_layerX = m_pageX;
m_layerY = m_pageY;
m_offsetX = m_pageX;
m_offsetY = m_pageY;
computePageLocation();
}
void MouseRelatedEvent::computePageLocation()
{
float zoomFactor = (view() && view()->frame()) ? view()->frame()->pageZoomFactor() : 1.0f;
setAbsoluteLocation(roundedIntPoint(FloatPoint(pageX() * zoomFactor, pageY() * zoomFactor)));
}
void MouseRelatedEvent::receivedTarget()
{
ASSERT(target());
Node* targ = target()->toNode();
if (!targ)
return;
// Compute coordinates that are based on the target.
m_layerX = m_pageX;
m_layerY = m_pageY;
m_offsetX = m_pageX;
m_offsetY = m_pageY;
// Must have an updated render tree for this math to work correctly.
targ->document()->updateStyleIfNeeded();
// Adjust offsetX/Y to be relative to the target's position.
if (!isSimulated()) {
if (RenderObject* r = targ->renderer()) {
FloatPoint localPos = r->absoluteToLocal(absoluteLocation(), false, true);
float zoomFactor = (view() && view()->frame()) ? view()->frame()->pageZoomFactor() : 1.0f;
m_offsetX = lroundf(localPos.x() / zoomFactor);
m_offsetY = lroundf(localPos.y() / zoomFactor);
}
}
// Adjust layerX/Y to be relative to the layer.
// FIXME: We're pretty sure this is the wrong definition of "layer."
// Our RenderLayer is a more modern concept, and layerX/Y is some
// other notion about groups of elements (left over from the Netscape 4 days?);
// we should test and fix this.
Node* n = targ;
while (n && !n->renderer())
n = n->parent();
if (n) {
RenderLayer* layer = n->renderer()->enclosingLayer();
layer->updateLayerPosition();
for (; layer; layer = layer->parent()) {
m_layerX -= layer->x();
m_layerY -= layer->y();
}
}
}
int MouseRelatedEvent::pageX() const
{
return m_pageX;
}
int MouseRelatedEvent::pageY() const
{
return m_pageY;
}
int MouseRelatedEvent::x() const
{
// FIXME: This is not correct.
// See Microsoft documentation and <http://www.quirksmode.org/dom/w3c_events.html>.
return m_clientX;
}
int MouseRelatedEvent::y() const
{
// FIXME: This is not correct.
// See Microsoft documentation and <http://www.quirksmode.org/dom/w3c_events.html>.
return m_clientY;
}
} // namespace WebCore
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