Remove MouseRelatedEvent

third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp

Index: third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp
diff --git a/third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp b/third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp
deleted file mode 100644
index fef880252639c6acef8fd70f13cf9afd78f38da9..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/events/MouseRelatedEvent.cpp
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * 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 "core/events/MouseRelatedEvent.h"
-
-#include "core/dom/Document.h"
-#include "core/frame/LocalDOMWindow.h"
-#include "core/frame/FrameView.h"
-#include "core/frame/LocalFrame.h"
-#include "core/layout/LayoutObject.h"
-#include "core/paint/PaintLayer.h"
-#include "core/svg/SVGElement.h"
-
-namespace blink {
-
-MouseRelatedEvent::MouseRelatedEvent()
-    : m_positionType(PositionType::Position),
-      m_hasCachedRelativePosition(false) {}
-
-static LayoutSize contentsScrollOffset(AbstractView* abstractView) {
-  if (!abstractView || !abstractView->isLocalDOMWindow())
-    return LayoutSize();
-  LocalFrame* frame = toLocalDOMWindow(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,
-    AbstractView* abstractView,
-    int detail,
-    const IntPoint& screenLocation,
-    const IntPoint& rootFrameLocation,
-    const IntPoint& movementDelta,
-    PlatformEvent::Modifiers modifiers,
-    TimeTicks platformTimeStamp,
-    PositionType positionType,
-    InputDeviceCapabilities* sourceCapabilities)
-    : UIEventWithKeyState(eventType,
-                          canBubble,
-                          cancelable,
-                          abstractView,
-                          detail,
-                          modifiers,
-                          platformTimeStamp,
-                          sourceCapabilities),
-      m_screenLocation(screenLocation),
-      m_movementDelta(movementDelta),
-      m_positionType(positionType) {
-  DoublePoint adjustedPageLocation;
-  DoubleSize scrollOffset;
-
-  LocalFrame* frame = view() && view()->isLocalDOMWindow()
-                          ? toLocalDOMWindow(view())->frame()
-                          : nullptr;
-  if (frame && hasPosition()) {
-    if (FrameView* frameView = frame->view()) {
-      adjustedPageLocation = frameView->rootFrameToContents(rootFrameLocation);
-      scrollOffset = frameView->scrollOffsetInt();
-      float scaleFactor = 1 / frame->pageZoomFactor();
-      if (scaleFactor != 1.0f) {
-        adjustedPageLocation.scale(scaleFactor, scaleFactor);
-        scrollOffset.scale(scaleFactor, scaleFactor);
-      }
-    }
-  }
-
-  m_clientLocation = adjustedPageLocation - scrollOffset;
-  m_pageLocation = adjustedPageLocation;
-
-  // 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;
-}
-
-MouseRelatedEvent::MouseRelatedEvent(const AtomicString& eventType,
-                                     const MouseEventInit& initializer)
-    : UIEventWithKeyState(eventType, initializer),
-      m_screenLocation(
-          DoublePoint(initializer.screenX(), initializer.screenY())),
-      m_movementDelta(
-          IntPoint(initializer.movementX(), initializer.movementY())),
-      m_positionType(PositionType::Position) {
-  initCoordinates(initializer.clientX(), initializer.clientY());
-}
-
-void MouseRelatedEvent::initCoordinates(const double clientX,
-                                        const double clientY) {
-  // Set up initial values for coordinates.
-  // Correct values are computed lazily, see computeRelativePosition.
-  m_clientLocation = DoublePoint(clientX, clientY);
-  m_pageLocation = m_clientLocation + DoubleSize(contentsScrollOffset(view()));
-
-  m_layerLocation = m_pageLocation;
-  m_offsetLocation = m_pageLocation;
-
-  computePageLocation();
-  m_hasCachedRelativePosition = false;
-}
-
-static float pageZoomFactor(const UIEvent* event) {
-  if (!event->view() || !event->view()->isLocalDOMWindow())
-    return 1;
-  LocalFrame* frame = toLocalDOMWindow(event->view())->frame();
-  if (!frame)
-    return 1;
-  return frame->pageZoomFactor();
-}
-
-void MouseRelatedEvent::computePageLocation() {
-  float scaleFactor = pageZoomFactor(this);
-  m_absoluteLocation = m_pageLocation.scaledBy(scaleFactor);
-}
-
-void MouseRelatedEvent::receivedTarget() {
-  m_hasCachedRelativePosition = false;
-}
-
-static const LayoutObject* findTargetLayoutObject(Node*& targetNode) {
-  LayoutObject* layoutObject = targetNode->layoutObject();
-  if (!layoutObject || !layoutObject->isSVG())
-    return layoutObject;
-  // If this is an SVG node, compute the offset to the padding box of the
-  // outermost SVG root (== the closest ancestor that has a CSS layout box.)
-  while (!layoutObject->isSVGRoot())
-    layoutObject = layoutObject->parent();
-  // Update the target node to point to the SVG root.
-  targetNode = layoutObject->node();
-  DCHECK(!targetNode || (targetNode->isSVGElement() &&
-                         toSVGElement(*targetNode).isOutermostSVGSVGElement()));
-  return layoutObject;
-}
-
-void MouseRelatedEvent::computeRelativePosition() {
-  Node* targetNode = target() ? target()->toNode() : nullptr;
-  if (!targetNode)
-    return;
-
-  // Compute coordinates that are based on the target.
-  m_layerLocation = m_pageLocation;
-  m_offsetLocation = m_pageLocation;
-
-  // Must have an updated layout tree for this math to work correctly.
-  targetNode->document().updateStyleAndLayoutIgnorePendingStylesheets();
-
-  // Adjust offsetLocation to be relative to the target's padding box.
-  if (const LayoutObject* layoutObject = findTargetLayoutObject(targetNode)) {
-    FloatPoint localPos = layoutObject->absoluteToLocal(
-        FloatPoint(absoluteLocation()), UseTransforms);
-
-    // Adding this here to address crbug.com/570666. Basically we'd like to
-    // find the local coordinates relative to the padding box not the border
-    // box.
-    if (layoutObject->isBoxModelObject()) {
-      const LayoutBoxModelObject* layoutBox =
-          toLayoutBoxModelObject(layoutObject);
-      localPos.move(-layoutBox->borderLeft(), -layoutBox->borderTop());
-    }
-
-    m_offsetLocation = DoublePoint(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 PaintLayer offsets.
-  // https://bugs.webkit.org/show_bug.cgi?id=21868
-  Node* n = targetNode;
-  while (n && !n->layoutObject())
-    n = n->parentNode();
-
-  if (n) {
-    // FIXME: This logic is a wrong implementation of convertToLayerCoords.
-    for (PaintLayer* layer = n->layoutObject()->enclosingLayer(); layer;
-         layer = layer->parent()) {
-      m_layerLocation -= DoubleSize(layer->location().x().toDouble(),
-                                    layer->location().y().toDouble());
-    }
-  }
-
-  m_hasCachedRelativePosition = true;
-}
-
-int MouseRelatedEvent::layerX() {
-  if (!m_hasCachedRelativePosition)
-    computeRelativePosition();
-
-  // TODO(mustaq): Remove the PointerEvent specific code when mouse has
-  // fractional coordinates. See crbug.com/655786.
-  return isPointerEvent() ? m_layerLocation.x()
-                          : static_cast<int>(m_layerLocation.x());
-}
-
-int MouseRelatedEvent::layerY() {
-  if (!m_hasCachedRelativePosition)
-    computeRelativePosition();
-
-  // TODO(mustaq): Remove the PointerEvent specific code when mouse has
-  // fractional coordinates. See crbug.com/655786.
-  return isPointerEvent() ? m_layerLocation.y()
-                          : static_cast<int>(m_layerLocation.y());
-}
-
-int MouseRelatedEvent::offsetX() {
-  if (!hasPosition())
-    return 0;
-  if (!m_hasCachedRelativePosition)
-    computeRelativePosition();
-  return std::round(m_offsetLocation.x());
-}
-
-int MouseRelatedEvent::offsetY() {
-  if (!hasPosition())
-    return 0;
-  if (!m_hasCachedRelativePosition)
-    computeRelativePosition();
-  return std::round(m_offsetLocation.y());
-}
-
-DEFINE_TRACE(MouseRelatedEvent) {
-  UIEventWithKeyState::trace(visitor);
-}
-
-}  // namespace blink