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| 1 /* | |
| 2 * Copyright (C) 2001 Peter Kelly (pmk@post.com) | |
| 3 * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de) | |
| 4 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) | |
| 5 * Copyright (C) 2003, 2005, 2006, 2008 Apple Inc. All rights reserved. | |
| 6 * | |
| 7 * This library is free software; you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Library General Public | |
| 9 * License as published by the Free Software Foundation; either | |
| 10 * version 2 of the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This library is distributed in the hope that it will be useful, | |
| 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Library General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Library General Public License | |
| 18 * along with this library; see the file COPYING.LIB. If not, write to | |
| 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 20 * Boston, MA 02110-1301, USA. | |
| 21 */ | |
| 22 | |
| 23 #include "core/events/MouseRelatedEvent.h" | |
| 24 | |
| 25 #include "core/dom/Document.h" | |
| 26 #include "core/frame/LocalDOMWindow.h" | |
| 27 #include "core/frame/FrameView.h" | |
| 28 #include "core/frame/LocalFrame.h" | |
| 29 #include "core/layout/LayoutObject.h" | |
| 30 #include "core/paint/PaintLayer.h" | |
| 31 #include "core/svg/SVGElement.h" | |
| 32 | |
| 33 namespace blink { | |
| 34 | |
| 35 MouseRelatedEvent::MouseRelatedEvent() | |
| 36 : m_positionType(PositionType::Position), | |
| 37 m_hasCachedRelativePosition(false) {} | |
| 38 | |
| 39 static LayoutSize contentsScrollOffset(AbstractView* abstractView) { | |
| 40 if (!abstractView || !abstractView->isLocalDOMWindow()) | |
| 41 return LayoutSize(); | |
| 42 LocalFrame* frame = toLocalDOMWindow(abstractView)->frame(); | |
| 43 if (!frame) | |
| 44 return LayoutSize(); | |
| 45 FrameView* frameView = frame->view(); | |
| 46 if (!frameView) | |
| 47 return LayoutSize(); | |
| 48 float scaleFactor = frame->pageZoomFactor(); | |
| 49 return LayoutSize(frameView->scrollX() / scaleFactor, | |
| 50 frameView->scrollY() / scaleFactor); | |
| 51 } | |
| 52 | |
| 53 MouseRelatedEvent::MouseRelatedEvent( | |
| 54 const AtomicString& eventType, | |
| 55 bool canBubble, | |
| 56 bool cancelable, | |
| 57 AbstractView* abstractView, | |
| 58 int detail, | |
| 59 const IntPoint& screenLocation, | |
| 60 const IntPoint& rootFrameLocation, | |
| 61 const IntPoint& movementDelta, | |
| 62 PlatformEvent::Modifiers modifiers, | |
| 63 TimeTicks platformTimeStamp, | |
| 64 PositionType positionType, | |
| 65 InputDeviceCapabilities* sourceCapabilities) | |
| 66 : UIEventWithKeyState(eventType, | |
| 67 canBubble, | |
| 68 cancelable, | |
| 69 abstractView, | |
| 70 detail, | |
| 71 modifiers, | |
| 72 platformTimeStamp, | |
| 73 sourceCapabilities), | |
| 74 m_screenLocation(screenLocation), | |
| 75 m_movementDelta(movementDelta), | |
| 76 m_positionType(positionType) { | |
| 77 DoublePoint adjustedPageLocation; | |
| 78 DoubleSize scrollOffset; | |
| 79 | |
| 80 LocalFrame* frame = view() && view()->isLocalDOMWindow() | |
| 81 ? toLocalDOMWindow(view())->frame() | |
| 82 : nullptr; | |
| 83 if (frame && hasPosition()) { | |
| 84 if (FrameView* frameView = frame->view()) { | |
| 85 adjustedPageLocation = frameView->rootFrameToContents(rootFrameLocation); | |
| 86 scrollOffset = frameView->scrollOffsetInt(); | |
| 87 float scaleFactor = 1 / frame->pageZoomFactor(); | |
| 88 if (scaleFactor != 1.0f) { | |
| 89 adjustedPageLocation.scale(scaleFactor, scaleFactor); | |
| 90 scrollOffset.scale(scaleFactor, scaleFactor); | |
| 91 } | |
| 92 } | |
| 93 } | |
| 94 | |
| 95 m_clientLocation = adjustedPageLocation - scrollOffset; | |
| 96 m_pageLocation = adjustedPageLocation; | |
| 97 | |
| 98 // Set up initial values for coordinates. | |
| 99 // Correct values are computed lazily, see computeRelativePosition. | |
| 100 m_layerLocation = m_pageLocation; | |
| 101 m_offsetLocation = m_pageLocation; | |
| 102 | |
| 103 computePageLocation(); | |
| 104 m_hasCachedRelativePosition = false; | |
| 105 } | |
| 106 | |
| 107 MouseRelatedEvent::MouseRelatedEvent(const AtomicString& eventType, | |
| 108 const MouseEventInit& initializer) | |
| 109 : UIEventWithKeyState(eventType, initializer), | |
| 110 m_screenLocation( | |
| 111 DoublePoint(initializer.screenX(), initializer.screenY())), | |
| 112 m_movementDelta( | |
| 113 IntPoint(initializer.movementX(), initializer.movementY())), | |
| 114 m_positionType(PositionType::Position) { | |
| 115 initCoordinates(initializer.clientX(), initializer.clientY()); | |
| 116 } | |
| 117 | |
| 118 void MouseRelatedEvent::initCoordinates(const double clientX, | |
| 119 const double clientY) { | |
| 120 // Set up initial values for coordinates. | |
| 121 // Correct values are computed lazily, see computeRelativePosition. | |
| 122 m_clientLocation = DoublePoint(clientX, clientY); | |
| 123 m_pageLocation = m_clientLocation + DoubleSize(contentsScrollOffset(view())); | |
| 124 | |
| 125 m_layerLocation = m_pageLocation; | |
| 126 m_offsetLocation = m_pageLocation; | |
| 127 | |
| 128 computePageLocation(); | |
| 129 m_hasCachedRelativePosition = false; | |
| 130 } | |
| 131 | |
| 132 static float pageZoomFactor(const UIEvent* event) { | |
| 133 if (!event->view() || !event->view()->isLocalDOMWindow()) | |
| 134 return 1; | |
| 135 LocalFrame* frame = toLocalDOMWindow(event->view())->frame(); | |
| 136 if (!frame) | |
| 137 return 1; | |
| 138 return frame->pageZoomFactor(); | |
| 139 } | |
| 140 | |
| 141 void MouseRelatedEvent::computePageLocation() { | |
| 142 float scaleFactor = pageZoomFactor(this); | |
| 143 m_absoluteLocation = m_pageLocation.scaledBy(scaleFactor); | |
| 144 } | |
| 145 | |
| 146 void MouseRelatedEvent::receivedTarget() { | |
| 147 m_hasCachedRelativePosition = false; | |
| 148 } | |
| 149 | |
| 150 static const LayoutObject* findTargetLayoutObject(Node*& targetNode) { | |
| 151 LayoutObject* layoutObject = targetNode->layoutObject(); | |
| 152 if (!layoutObject || !layoutObject->isSVG()) | |
| 153 return layoutObject; | |
| 154 // If this is an SVG node, compute the offset to the padding box of the | |
| 155 // outermost SVG root (== the closest ancestor that has a CSS layout box.) | |
| 156 while (!layoutObject->isSVGRoot()) | |
| 157 layoutObject = layoutObject->parent(); | |
| 158 // Update the target node to point to the SVG root. | |
| 159 targetNode = layoutObject->node(); | |
| 160 DCHECK(!targetNode || (targetNode->isSVGElement() && | |
| 161 toSVGElement(*targetNode).isOutermostSVGSVGElement())); | |
| 162 return layoutObject; | |
| 163 } | |
| 164 | |
| 165 void MouseRelatedEvent::computeRelativePosition() { | |
| 166 Node* targetNode = target() ? target()->toNode() : nullptr; | |
| 167 if (!targetNode) | |
| 168 return; | |
| 169 | |
| 170 // Compute coordinates that are based on the target. | |
| 171 m_layerLocation = m_pageLocation; | |
| 172 m_offsetLocation = m_pageLocation; | |
| 173 | |
| 174 // Must have an updated layout tree for this math to work correctly. | |
| 175 targetNode->document().updateStyleAndLayoutIgnorePendingStylesheets(); | |
| 176 | |
| 177 // Adjust offsetLocation to be relative to the target's padding box. | |
| 178 if (const LayoutObject* layoutObject = findTargetLayoutObject(targetNode)) { | |
| 179 FloatPoint localPos = layoutObject->absoluteToLocal( | |
| 180 FloatPoint(absoluteLocation()), UseTransforms); | |
| 181 | |
| 182 // Adding this here to address crbug.com/570666. Basically we'd like to | |
| 183 // find the local coordinates relative to the padding box not the border | |
| 184 // box. | |
| 185 if (layoutObject->isBoxModelObject()) { | |
| 186 const LayoutBoxModelObject* layoutBox = | |
| 187 toLayoutBoxModelObject(layoutObject); | |
| 188 localPos.move(-layoutBox->borderLeft(), -layoutBox->borderTop()); | |
| 189 } | |
| 190 | |
| 191 m_offsetLocation = DoublePoint(localPos); | |
| 192 float scaleFactor = 1 / pageZoomFactor(this); | |
| 193 if (scaleFactor != 1.0f) | |
| 194 m_offsetLocation.scale(scaleFactor, scaleFactor); | |
| 195 } | |
| 196 | |
| 197 // Adjust layerLocation to be relative to the layer. | |
| 198 // FIXME: event.layerX and event.layerY are poorly defined, | |
| 199 // and probably don't always correspond to PaintLayer offsets. | |
| 200 // https://bugs.webkit.org/show_bug.cgi?id=21868 | |
| 201 Node* n = targetNode; | |
| 202 while (n && !n->layoutObject()) | |
| 203 n = n->parentNode(); | |
| 204 | |
| 205 if (n) { | |
| 206 // FIXME: This logic is a wrong implementation of convertToLayerCoords. | |
| 207 for (PaintLayer* layer = n->layoutObject()->enclosingLayer(); layer; | |
| 208 layer = layer->parent()) { | |
| 209 m_layerLocation -= DoubleSize(layer->location().x().toDouble(), | |
| 210 layer->location().y().toDouble()); | |
| 211 } | |
| 212 } | |
| 213 | |
| 214 m_hasCachedRelativePosition = true; | |
| 215 } | |
| 216 | |
| 217 int MouseRelatedEvent::layerX() { | |
| 218 if (!m_hasCachedRelativePosition) | |
| 219 computeRelativePosition(); | |
| 220 | |
| 221 // TODO(mustaq): Remove the PointerEvent specific code when mouse has | |
| 222 // fractional coordinates. See crbug.com/655786. | |
| 223 return isPointerEvent() ? m_layerLocation.x() | |
| 224 : static_cast<int>(m_layerLocation.x()); | |
| 225 } | |
| 226 | |
| 227 int MouseRelatedEvent::layerY() { | |
| 228 if (!m_hasCachedRelativePosition) | |
| 229 computeRelativePosition(); | |
| 230 | |
| 231 // TODO(mustaq): Remove the PointerEvent specific code when mouse has | |
| 232 // fractional coordinates. See crbug.com/655786. | |
| 233 return isPointerEvent() ? m_layerLocation.y() | |
| 234 : static_cast<int>(m_layerLocation.y()); | |
| 235 } | |
| 236 | |
| 237 int MouseRelatedEvent::offsetX() { | |
| 238 if (!hasPosition()) | |
| 239 return 0; | |
| 240 if (!m_hasCachedRelativePosition) | |
| 241 computeRelativePosition(); | |
| 242 return std::round(m_offsetLocation.x()); | |
| 243 } | |
| 244 | |
| 245 int MouseRelatedEvent::offsetY() { | |
| 246 if (!hasPosition()) | |
| 247 return 0; | |
| 248 if (!m_hasCachedRelativePosition) | |
| 249 computeRelativePosition(); | |
| 250 return std::round(m_offsetLocation.y()); | |
| 251 } | |
| 252 | |
| 253 DEFINE_TRACE(MouseRelatedEvent) { | |
| 254 UIEventWithKeyState::trace(visitor); | |
| 255 } | |
| 256 | |
| 257 } // namespace blink | |
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Chromium Code Reviews
Issue 2580083002:
Remove MouseRelatedEvent (Closed)
