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| 1 /* | |
| 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | |
| 3 * (C) 2000 Simon Hausmann <hausmann@kde.org> | |
| 4 * (C) 2000 Stefan Schimanski (1Stein@gmx.de) | |
| 5 * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved. | |
| 6 * Copyright (C) Research In Motion Limited 2011. All rights reserved. | |
| 7 * | |
| 8 * This library is free software; you can redistribute it and/or | |
| 9 * modify it under the terms of the GNU Library General Public | |
| 10 * License as published by the Free Software Foundation; either | |
| 11 * version 2 of the License, or (at your option) any later version. | |
| 12 * | |
| 13 * This library is distributed in the hope that it will be useful, | |
| 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 * Library General Public License for more details. | |
| 17 * | |
| 18 * You should have received a copy of the GNU Library General Public License | |
| 19 * along with this library; see the file COPYING.LIB. If not, write to | |
| 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 21 * Boston, MA 02110-1301, USA. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "config.h" | |
| 26 #include "core/rendering/RenderPart.h" | |
| 27 | |
| 28 #include "core/dom/AXObjectCache.h" | |
| 29 #include "core/frame/FrameView.h" | |
| 30 #include "core/frame/LocalFrame.h" | |
| 31 #include "core/html/HTMLFrameElementBase.h" | |
| 32 #include "core/layout/HitTestResult.h" | |
| 33 #include "core/layout/Layer.h" | |
| 34 #include "core/paint/BoxPainter.h" | |
| 35 #include "core/paint/PartPainter.h" | |
| 36 #include "core/plugins/PluginView.h" | |
| 37 #include "core/rendering/RenderView.h" | |
| 38 #include "core/rendering/svg/RenderSVGRoot.h" | |
| 39 | |
| 40 namespace blink { | |
| 41 | |
| 42 RenderPart::RenderPart(Element* element) | |
| 43 : LayoutReplaced(element) | |
| 44 // Reference counting is used to prevent the part from being destroyed | |
| 45 // while inside the Widget code, which might not be able to handle that. | |
| 46 , m_refCount(1) | |
| 47 { | |
| 48 ASSERT(element); | |
| 49 frameView()->addPart(this); | |
| 50 setInline(false); | |
| 51 } | |
| 52 | |
| 53 void RenderPart::deref() | |
| 54 { | |
| 55 if (--m_refCount <= 0) | |
| 56 postDestroy(); | |
| 57 } | |
| 58 | |
| 59 void RenderPart::willBeDestroyed() | |
| 60 { | |
| 61 frameView()->removePart(this); | |
| 62 | |
| 63 if (AXObjectCache* cache = document().existingAXObjectCache()) { | |
| 64 cache->childrenChanged(this->parent()); | |
| 65 cache->remove(this); | |
| 66 } | |
| 67 | |
| 68 Element* element = toElement(node()); | |
| 69 if (element && element->isFrameOwnerElement()) | |
| 70 toHTMLFrameOwnerElement(element)->setWidget(nullptr); | |
| 71 | |
| 72 LayoutReplaced::willBeDestroyed(); | |
| 73 } | |
| 74 | |
| 75 void RenderPart::destroy() | |
| 76 { | |
| 77 willBeDestroyed(); | |
| 78 clearNode(); | |
| 79 deref(); | |
| 80 } | |
| 81 | |
| 82 RenderPart::~RenderPart() | |
| 83 { | |
| 84 ASSERT(m_refCount <= 0); | |
| 85 } | |
| 86 | |
| 87 Widget* RenderPart::widget() const | |
| 88 { | |
| 89 // Plugin widgets are stored in their DOM node. This includes HTMLAppletElem
ent. | |
| 90 Element* element = toElement(node()); | |
| 91 | |
| 92 if (element && element->isFrameOwnerElement()) | |
| 93 return toHTMLFrameOwnerElement(element)->ownedWidget(); | |
| 94 | |
| 95 return 0; | |
| 96 } | |
| 97 | |
| 98 LayerType RenderPart::layerTypeRequired() const | |
| 99 { | |
| 100 LayerType type = LayoutReplaced::layerTypeRequired(); | |
| 101 if (type != NoLayer) | |
| 102 return type; | |
| 103 return ForcedLayer; | |
| 104 } | |
| 105 | |
| 106 bool RenderPart::requiresAcceleratedCompositing() const | |
| 107 { | |
| 108 // There are two general cases in which we can return true. First, if this i
s a plugin | |
| 109 // renderer and the plugin has a layer, then we need a layer. Second, if thi
s is | |
| 110 // a renderer with a contentDocument and that document needs a layer, then w
e need | |
| 111 // a layer. | |
| 112 if (widget() && widget()->isPluginView() && toPluginView(widget())->platform
Layer()) | |
| 113 return true; | |
| 114 | |
| 115 if (!node() || !node()->isFrameOwnerElement()) | |
| 116 return false; | |
| 117 | |
| 118 HTMLFrameOwnerElement* element = toHTMLFrameOwnerElement(node()); | |
| 119 if (element->contentFrame() && element->contentFrame()->isRemoteFrame()) | |
| 120 return true; | |
| 121 | |
| 122 if (Document* contentDocument = element->contentDocument()) { | |
| 123 if (RenderView* view = contentDocument->renderView()) | |
| 124 return view->usesCompositing(); | |
| 125 } | |
| 126 | |
| 127 return false; | |
| 128 } | |
| 129 | |
| 130 bool RenderPart::needsPreferredWidthsRecalculation() const | |
| 131 { | |
| 132 if (LayoutReplaced::needsPreferredWidthsRecalculation()) | |
| 133 return true; | |
| 134 return embeddedContentBox(); | |
| 135 } | |
| 136 | |
| 137 bool RenderPart::nodeAtPointOverWidget(const HitTestRequest& request, HitTestRes
ult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accu
mulatedOffset, HitTestAction action) | |
| 138 { | |
| 139 bool hadResult = result.innerNode(); | |
| 140 bool inside = LayoutReplaced::nodeAtPoint(request, result, locationInContain
er, accumulatedOffset, action); | |
| 141 | |
| 142 // Check to see if we are really over the widget itself (and not just in the
border/padding area). | |
| 143 if ((inside || result.isRectBasedTest()) && !hadResult && result.innerNode()
== node()) | |
| 144 result.setIsOverWidget(contentBoxRect().contains(result.localPoint())); | |
| 145 return inside; | |
| 146 } | |
| 147 | |
| 148 bool RenderPart::nodeAtPoint(const HitTestRequest& request, HitTestResult& resul
t, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOff
set, HitTestAction action) | |
| 149 { | |
| 150 if (!widget() || !widget()->isFrameView() || !request.allowsChildFrameConten
t()) | |
| 151 return nodeAtPointOverWidget(request, result, locationInContainer, accum
ulatedOffset, action); | |
| 152 | |
| 153 FrameView* childFrameView = toFrameView(widget()); | |
| 154 RenderView* childRoot = childFrameView->renderView(); | |
| 155 | |
| 156 if (visibleToHitTestRequest(request) && childRoot) { | |
| 157 LayoutPoint adjustedLocation = accumulatedOffset + location(); | |
| 158 LayoutPoint contentOffset = LayoutPoint(borderLeft() + paddingLeft(), bo
rderTop() + paddingTop()) - LayoutSize(childFrameView->scrollOffset()); | |
| 159 HitTestLocation newHitTestLocation(locationInContainer, -adjustedLocatio
n - contentOffset); | |
| 160 HitTestRequest newHitTestRequest(request.type() | HitTestRequest::ChildF
rameHitTest); | |
| 161 HitTestResult childFrameResult(newHitTestLocation); | |
| 162 | |
| 163 bool isInsideChildFrame = childRoot->hitTest(newHitTestRequest, newHitTe
stLocation, childFrameResult); | |
| 164 | |
| 165 if (newHitTestLocation.isRectBasedTest()) | |
| 166 result.append(childFrameResult); | |
| 167 else if (isInsideChildFrame) | |
| 168 result = childFrameResult; | |
| 169 | |
| 170 if (isInsideChildFrame) | |
| 171 return true; | |
| 172 } | |
| 173 | |
| 174 return nodeAtPointOverWidget(request, result, locationInContainer, accumulat
edOffset, action); | |
| 175 } | |
| 176 | |
| 177 CompositingReasons RenderPart::additionalCompositingReasons() const | |
| 178 { | |
| 179 if (requiresAcceleratedCompositing()) | |
| 180 return CompositingReasonIFrame; | |
| 181 return CompositingReasonNone; | |
| 182 } | |
| 183 | |
| 184 void RenderPart::styleDidChange(StyleDifference diff, const LayoutStyle* oldStyl
e) | |
| 185 { | |
| 186 LayoutReplaced::styleDidChange(diff, oldStyle); | |
| 187 Widget* widget = this->widget(); | |
| 188 | |
| 189 if (!widget) | |
| 190 return; | |
| 191 | |
| 192 // If the iframe has custom scrollbars, recalculate their style. | |
| 193 if (widget && widget->isFrameView()) | |
| 194 toFrameView(widget)->recalculateCustomScrollbarStyle(); | |
| 195 | |
| 196 if (style()->visibility() != VISIBLE) { | |
| 197 widget->hide(); | |
| 198 } else { | |
| 199 widget->show(); | |
| 200 } | |
| 201 } | |
| 202 | |
| 203 void RenderPart::layout() | |
| 204 { | |
| 205 ASSERT(needsLayout()); | |
| 206 | |
| 207 clearNeedsLayout(); | |
| 208 } | |
| 209 | |
| 210 void RenderPart::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffse
t) | |
| 211 { | |
| 212 PartPainter(*this).paint(paintInfo, paintOffset); | |
| 213 } | |
| 214 | |
| 215 void RenderPart::paintContents(const PaintInfo& paintInfo, const LayoutPoint& pa
intOffset) | |
| 216 { | |
| 217 PartPainter(*this).paintContents(paintInfo, paintOffset); | |
| 218 } | |
| 219 | |
| 220 CursorDirective RenderPart::getCursor(const LayoutPoint& point, Cursor& cursor)
const | |
| 221 { | |
| 222 if (widget() && widget()->isPluginView()) { | |
| 223 // A plug-in is responsible for setting the cursor when the pointer is o
ver it. | |
| 224 return DoNotSetCursor; | |
| 225 } | |
| 226 return LayoutReplaced::getCursor(point, cursor); | |
| 227 } | |
| 228 | |
| 229 void RenderPart::updateOnWidgetChange() | |
| 230 { | |
| 231 Widget* widget = this->widget(); | |
| 232 if (!widget) | |
| 233 return; | |
| 234 | |
| 235 if (!style()) | |
| 236 return; | |
| 237 | |
| 238 if (!needsLayout()) | |
| 239 updateWidgetGeometry(); | |
| 240 | |
| 241 if (style()->visibility() != VISIBLE) { | |
| 242 widget->hide(); | |
| 243 } else { | |
| 244 widget->show(); | |
| 245 // FIXME: Why do we issue a full paint invalidation in this case, but no
t the other? | |
| 246 setShouldDoFullPaintInvalidation(); | |
| 247 } | |
| 248 } | |
| 249 | |
| 250 void RenderPart::updateWidgetPosition() | |
| 251 { | |
| 252 Widget* widget = this->widget(); | |
| 253 if (!widget || !node()) // Check the node in case destroy() has been called. | |
| 254 return; | |
| 255 | |
| 256 bool boundsChanged = updateWidgetGeometry(); | |
| 257 | |
| 258 // If the frame bounds got changed, or if view needs layout (possibly indica
ting | |
| 259 // content size is wrong) we have to do a layout to set the right widget siz
e. | |
| 260 if (widget && widget->isFrameView()) { | |
| 261 FrameView* frameView = toFrameView(widget); | |
| 262 // Check the frame's page to make sure that the frame isn't in the proce
ss of being destroyed. | |
| 263 if ((boundsChanged || frameView->needsLayout()) && frameView->frame().pa
ge()) | |
| 264 frameView->layout(); | |
| 265 } | |
| 266 } | |
| 267 | |
| 268 void RenderPart::widgetPositionsUpdated() | |
| 269 { | |
| 270 Widget* widget = this->widget(); | |
| 271 if (!widget) | |
| 272 return; | |
| 273 widget->widgetPositionsUpdated(); | |
| 274 } | |
| 275 | |
| 276 bool RenderPart::updateWidgetGeometry() | |
| 277 { | |
| 278 Widget* widget = this->widget(); | |
| 279 ASSERT(widget); | |
| 280 | |
| 281 LayoutRect contentBox = contentBoxRect(); | |
| 282 LayoutRect absoluteContentBox(localToAbsoluteQuad(FloatQuad(contentBox)).bou
ndingBox()); | |
| 283 if (widget->isFrameView()) { | |
| 284 contentBox.setLocation(absoluteContentBox.location()); | |
| 285 return setWidgetGeometry(contentBox); | |
| 286 } | |
| 287 | |
| 288 return setWidgetGeometry(absoluteContentBox); | |
| 289 } | |
| 290 | |
| 291 // Widgets are always placed on integer boundaries, so rounding the size is actu
ally | |
| 292 // the desired behavior. This function is here because it's otherwise seldom wha
t we | |
| 293 // want to do with a LayoutRect. | |
| 294 static inline IntRect roundedIntRect(const LayoutRect& rect) | |
| 295 { | |
| 296 return IntRect(roundedIntPoint(rect.location()), roundedIntSize(rect.size())
); | |
| 297 } | |
| 298 | |
| 299 bool RenderPart::setWidgetGeometry(const LayoutRect& frame) | |
| 300 { | |
| 301 if (!node()) | |
| 302 return false; | |
| 303 | |
| 304 Widget* widget = this->widget(); | |
| 305 ASSERT(widget); | |
| 306 | |
| 307 IntRect newFrame = roundedIntRect(frame); | |
| 308 | |
| 309 if (widget->frameRect() == newFrame) | |
| 310 return false; | |
| 311 | |
| 312 RefPtrWillBeRawPtr<RenderPart> protector(this); | |
| 313 RefPtrWillBeRawPtr<Node> protectedNode(node()); | |
| 314 widget->setFrameRect(newFrame); | |
| 315 return widget->frameRect().size() != newFrame.size(); | |
| 316 } | |
| 317 | |
| 318 } | |
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Chromium Code Reviews
Issue 931003002:
Move and rename RenderPart to LayoutPart. (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master