Revert 158219 "Move dom/*Event* to events to match the DOM vs. E..."

Source/core/events/MouseRelatedEvent.cpp

-/*
- * 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 "core/events/MouseRelatedEvent.h"
-
-#include "core/dom/Document.h"
-#include "core/page/DOMWindow.h"
-#include "core/page/Frame.h"
-#include "core/page/FrameView.h"
-#include "core/rendering/RenderLayer.h"
-#include "core/rendering/RenderObject.h"
-
-namespace WebCore {
-
-MouseRelatedEvent::MouseRelatedEvent()
-    : m_isSimulated(false)
-    , m_hasCachedRelativePosition(false)
-{
-}
-
-static LayoutSize contentsScrollOffset(AbstractView* abstractView)
-{
-    if (!abstractView)
-        return LayoutSize();
-    Frame* frame = abstractView->frame();
-    if (!frame)
-        return LayoutSize();
-    FrameView* frameView = frame->view();
-    if (!frameView)
-        return LayoutSize();
-    float scaleFactor = frame->pageZoomFactor();
-    return LayoutSize(frameView->scrollX() / scaleFactor, frameView->scrollY() / scaleFactor);
-}
-
-MouseRelatedEvent::MouseRelatedEvent(const AtomicString& eventType, bool canBubble, bool cancelable, PassRefPtr<AbstractView> abstractView,
-                                     int detail, const IntPoint& screenLocation, const IntPoint& windowLocation,
-                                     const IntPoint& movementDelta,
-                                     bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool isSimulated)
-    : UIEventWithKeyState(eventType, canBubble, cancelable, abstractView, detail, ctrlKey, altKey, shiftKey, metaKey)
-    , m_screenLocation(screenLocation)
-    , m_movementDelta(movementDelta)
-    , m_isSimulated(isSimulated)
-{
-    LayoutPoint adjustedPageLocation;
-    LayoutPoint scrollPosition;
-
-    Frame* frame = view() ? view()->frame() : 0;
-    if (frame && !isSimulated) {
-        if (FrameView* frameView = frame->view()) {
-            scrollPosition = frameView->scrollPosition();
-            adjustedPageLocation = frameView->windowToContents(windowLocation);
-            float scaleFactor = 1 / frame->pageZoomFactor();
-            if (scaleFactor != 1.0f) {
-                adjustedPageLocation.scale(scaleFactor, scaleFactor);
-                scrollPosition.scale(scaleFactor, scaleFactor);
-            }
-        }
-    }
-
-    m_clientLocation = adjustedPageLocation - toLayoutSize(scrollPosition);
-    m_pageLocation = adjustedPageLocation;
-
-    initCoordinates();
-}
-
-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;
-}
-
-void MouseRelatedEvent::initCoordinates(const LayoutPoint& clientLocation)
-{
-    // Set up initial values for coordinates.
-    // Correct values are computed lazily, see computeRelativePosition.
-    m_clientLocation = clientLocation;
-    m_pageLocation = clientLocation + contentsScrollOffset(view());
-
-    m_layerLocation = m_pageLocation;
-    m_offsetLocation = m_pageLocation;
-
-    computePageLocation();
-    m_hasCachedRelativePosition = false;
-}
-
-static float pageZoomFactor(const UIEvent* event)
-{
-    DOMWindow* window = event->view();
-    if (!window)
-        return 1;
-    Frame* frame = window->frame();
-    if (!frame)
-        return 1;
-    return frame->pageZoomFactor();
-}
-
-void MouseRelatedEvent::computePageLocation()
-{
-    float scaleFactor = pageZoomFactor(this);
-    setAbsoluteLocation(roundedLayoutPoint(FloatPoint(pageX() * scaleFactor, pageY() * scaleFactor)));
-}
-
-void MouseRelatedEvent::receivedTarget()
-{
-    m_hasCachedRelativePosition = false;
-}
-
-void MouseRelatedEvent::computeRelativePosition()
-{
-    Node* targetNode = target() ? target()->toNode() : 0;
-    if (!targetNode)
-        return;
-
-    // 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()) {
-        FloatPoint localPos = r->absoluteToLocal(absoluteLocation(), UseTransforms);
-        m_offsetLocation = roundedLayoutPoint(localPos);
-        float scaleFactor = 1 / pageZoomFactor(this);
-        if (scaleFactor != 1.0f)
-            m_offsetLocation.scale(scaleFactor, 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;
-}
-
-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 (!m_hasCachedRelativePosition)
-        computeRelativePosition();
-    return roundToInt(m_offsetLocation.x());
-}
-
-int MouseRelatedEvent::offsetY()
-{
-    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