1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org) 3 * (C) 2000 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2000 Dirk Mueller (mueller (at) kde.org) 5 * (C) 2004 Allan Sandfeld Jensen (kde (at) carewolf.com) 6 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 7 * Copyright (C) 2009 Google Inc. All rights reserved. 8 * 9 * This library is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Library General Public 11 * License as published by the Free Software Foundation; either 12 * version 2 of the License, or (at your option) any later version. 13 * 14 * This library is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Library General Public License for more details. 18 * 19 * You should have received a copy of the GNU Library General Public License 20 * along with this library; see the file COPYING.LIB. If not, write to 21 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 22 * Boston, MA 02110-1301, USA. 23 * 24 */ 25 26 #ifndef RenderObject_h 27 #define RenderObject_h 28 29 #include "CachedResourceClient.h" 30 #include "Document.h" 31 #include "Element.h" 32 #include "FloatQuad.h" 33 #include "PaintPhase.h" 34 #include "RenderObjectChildList.h" 35 #include "RenderStyle.h" 36 #include "TextAffinity.h" 37 #include "TransformationMatrix.h" 38 #include <wtf/UnusedParam.h> 39 40 #if USE(CG) || USE(CAIRO) || PLATFORM(QT) 41 #define HAVE_PATH_BASED_BORDER_RADIUS_DRAWING 1 42 #endif 43 44 namespace WebCore { 45 46 class AffineTransform; 47 class AnimationController; 48 class HitTestResult; 49 class InlineBox; 50 class InlineFlowBox; 51 class OverlapTestRequestClient; 52 class Path; 53 class Position; 54 class RenderBoxModelObject; 55 class RenderInline; 56 class RenderBlock; 57 class RenderFlow; 58 class RenderLayer; 59 class RenderTheme; 60 class TransformState; 61 class VisiblePosition; 62 #if ENABLE(SVG) 63 class RenderSVGResourceContainer; 64 #endif 65 66 struct PaintInfo; 67 68 enum HitTestFilter { 69 HitTestAll, 70 HitTestSelf, 71 HitTestDescendants 72 }; 73 74 enum HitTestAction { 75 HitTestBlockBackground, 76 HitTestChildBlockBackground, 77 HitTestChildBlockBackgrounds, 78 HitTestFloat, 79 HitTestForeground 80 }; 81 82 // Sides used when drawing borders and outlines. The values should run clockwise from top. 83 enum BoxSide { 84 BSTop, 85 BSRight, 86 BSBottom, 87 BSLeft 88 }; 89 90 const int caretWidth = 1; 91 92 #if ENABLE(DASHBOARD_SUPPORT) 93 struct DashboardRegionValue { 94 bool operator==(const DashboardRegionValue& o) const 95 { 96 return type == o.type && bounds == o.bounds && clip == o.clip && label == o.label; 97 } 98 bool operator!=(const DashboardRegionValue& o) const 99 { 100 return !(*this == o); 101 } 102 103 String label; 104 IntRect bounds; 105 IntRect clip; 106 int type; 107 }; 108 #endif 109 110 // Base class for all rendering tree objects. 111 class RenderObject : public CachedResourceClient { 112 friend class RenderBlock; 113 friend class RenderBox; 114 friend class RenderLayer; 115 friend class RenderObjectChildList; 116 friend class RenderSVGContainer; 117 public: 118 // Anonymous objects should pass the document as their node, and they will then automatically be 119 // marked as anonymous in the constructor. 120 RenderObject(Node*); 121 virtual ~RenderObject(); 122 123 RenderTheme* theme() const; 124 125 virtual const char* renderName() const = 0; 126 127 RenderObject* parent() const { return m_parent; } 128 bool isDescendantOf(const RenderObject*) const; 129 130 RenderObject* previousSibling() const { return m_previous; } 131 RenderObject* nextSibling() const { return m_next; } 132 133 RenderObject* firstChild() const 134 { 135 if (const RenderObjectChildList* children = virtualChildren()) 136 return children->firstChild(); 137 return 0; 138 } 139 RenderObject* lastChild() const 140 { 141 if (const RenderObjectChildList* children = virtualChildren()) 142 return children->lastChild(); 143 return 0; 144 } 145 RenderObject* beforePseudoElementRenderer() const 146 { 147 if (const RenderObjectChildList* children = virtualChildren()) 148 return children->beforePseudoElementRenderer(this); 149 return 0; 150 } 151 RenderObject* afterPseudoElementRenderer() const 152 { 153 if (const RenderObjectChildList* children = virtualChildren()) 154 return children->afterPseudoElementRenderer(this); 155 return 0; 156 } 157 virtual RenderObjectChildList* virtualChildren() { return 0; } 158 virtual const RenderObjectChildList* virtualChildren() const { return 0; } 159 160 RenderObject* nextInPreOrder() const; 161 RenderObject* nextInPreOrder(const RenderObject* stayWithin) const; 162 RenderObject* nextInPreOrderAfterChildren() const; 163 RenderObject* nextInPreOrderAfterChildren(const RenderObject* stayWithin) const; 164 RenderObject* previousInPreOrder() const; 165 RenderObject* childAt(unsigned) const; 166 167 RenderObject* firstLeafChild() const; 168 RenderObject* lastLeafChild() const; 169 170 // The following six functions are used when the render tree hierarchy changes to make sure layers get 171 // properly added and removed. Since containership can be implemented by any subclass, and since a hierarchy 172 // can contain a mixture of boxes and other object types, these functions need to be in the base class. 173 RenderLayer* enclosingLayer() const; 174 void addLayers(RenderLayer* parentLayer, RenderObject* newObject); 175 void removeLayers(RenderLayer* parentLayer); 176 void moveLayers(RenderLayer* oldParent, RenderLayer* newParent); 177 RenderLayer* findNextLayer(RenderLayer* parentLayer, RenderObject* startPoint, bool checkParent = true); 178 179 // Convenience function for getting to the nearest enclosing box of a RenderObject. 180 RenderBox* enclosingBox() const; 181 RenderBoxModelObject* enclosingBoxModelObject() const; 182 183 virtual bool isEmpty() const { return firstChild() == 0; } 184 185 #ifndef NDEBUG 186 void setHasAXObject(bool flag) { m_hasAXObject = flag; } 187 bool hasAXObject() const { return m_hasAXObject; } 188 bool isSetNeedsLayoutForbidden() const { return m_setNeedsLayoutForbidden; } 189 void setNeedsLayoutIsForbidden(bool flag) { m_setNeedsLayoutForbidden = flag; } 190 #endif 191 192 // Obtains the nearest enclosing block (including this block) that contributes a first-line style to our inline 193 // children. 194 virtual RenderBlock* firstLineBlock() const; 195 196 // Called when an object that was floating or positioned becomes a normal flow object 197 // again. We have to make sure the render tree updates as needed to accommodate the new 198 // normal flow object. 199 void handleDynamicFloatPositionChange(); 200 201 // RenderObject tree manipulation 202 ////////////////////////////////////////// 203 virtual bool canHaveChildren() const { return virtualChildren(); } 204 virtual bool isChildAllowed(RenderObject*, RenderStyle*) const { return true; } 205 virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0); 206 virtual void addChildIgnoringContinuation(RenderObject* newChild, RenderObject* beforeChild = 0) { return addChild(newChild, beforeChild); } 207 virtual void removeChild(RenderObject*); 208 virtual bool createsAnonymousWrapper() const { return false; } 209 ////////////////////////////////////////// 210 211 protected: 212 ////////////////////////////////////////// 213 // Helper functions. Dangerous to use! 214 void setPreviousSibling(RenderObject* previous) { m_previous = previous; } 215 void setNextSibling(RenderObject* next) { m_next = next; } 216 void setParent(RenderObject* parent) { m_parent = parent; } 217 ////////////////////////////////////////// 218 private: 219 void addAbsoluteRectForLayer(IntRect& result); 220 void setLayerNeedsFullRepaint(); 221 222 public: 223 #ifndef NDEBUG 224 void showTreeForThis() const; 225 226 void showRenderObject() const; 227 // We don't make printedCharacters an optional parameter so that 228 // showRenderObject can be called from gdb easily. 229 void showRenderObject(int printedCharacters) const; 230 void showRenderTreeAndMark(const RenderObject* markedObject1 = 0, const char* markedLabel1 = 0, const RenderObject* markedObject2 = 0, const char* markedLabel2 = 0, int depth = 0) const; 231 #endif 232 233 static RenderObject* createObject(Node*, RenderStyle*); 234 235 // Overloaded new operator. Derived classes must override operator new 236 // in order to allocate out of the RenderArena. 237 void* operator new(size_t, RenderArena*) throw(); 238 239 // Overridden to prevent the normal delete from being called. 240 void operator delete(void*, size_t); 241 242 private: 243 // The normal operator new is disallowed on all render objects. 244 void* operator new(size_t) throw(); 245 246 public: 247 RenderArena* renderArena() const { return document()->renderArena(); } 248 249 virtual bool isApplet() const { return false; } 250 virtual bool isBR() const { return false; } 251 virtual bool isBlockFlow() const { return false; } 252 virtual bool isBoxModelObject() const { return false; } 253 virtual bool isCounter() const { return false; } 254 virtual bool isQuote() const { return false; } 255 virtual bool isDetails() const { return false; } 256 virtual bool isDetailsMarker() const { return false; } 257 virtual bool isEmbeddedObject() const { return false; } 258 virtual bool isFieldset() const { return false; } 259 virtual bool isFileUploadControl() const { return false; } 260 virtual bool isFrame() const { return false; } 261 virtual bool isFrameSet() const { return false; } 262 virtual bool isImage() const { return false; } 263 virtual bool isInlineBlockOrInlineTable() const { return false; } 264 virtual bool isListBox() const { return false; } 265 virtual bool isListItem() const { return false; } 266 virtual bool isListMarker() const { return false; } 267 virtual bool isMedia() const { return false; } 268 virtual bool isMenuList() const { return false; } 269 #if ENABLE(METER_TAG) 270 virtual bool isMeter() const { return false; } 271 #endif 272 #if ENABLE(PROGRESS_TAG) 273 virtual bool isProgress() const { return false; } 274 #endif 275 virtual bool isRenderBlock() const { return false; } 276 virtual bool isRenderButton() const { return false; } 277 virtual bool isRenderIFrame() const { return false; } 278 virtual bool isRenderImage() const { return false; } 279 virtual bool isRenderInline() const { return false; } 280 virtual bool isRenderPart() const { return false; } 281 virtual bool isRenderView() const { return false; } 282 virtual bool isReplica() const { return false; } 283 284 virtual bool isRuby() const { return false; } 285 virtual bool isRubyBase() const { return false; } 286 virtual bool isRubyRun() const { return false; } 287 virtual bool isRubyText() const { return false; } 288 289 virtual bool isSlider() const { return false; } 290 virtual bool isSummary() const { return false; } 291 virtual bool isTable() const { return false; } 292 virtual bool isTableCell() const { return false; } 293 virtual bool isTableCol() const { return false; } 294 virtual bool isTableRow() const { return false; } 295 virtual bool isTableSection() const { return false; } 296 virtual bool isTextControl() const { return false; } 297 virtual bool isTextArea() const { return false; } 298 virtual bool isTextField() const { return false; } 299 virtual bool isVideo() const { return false; } 300 virtual bool isWidget() const { return false; } 301 virtual bool isCanvas() const { return false; } 302 #if ENABLE(FULLSCREEN_API) 303 virtual bool isRenderFullScreen() const { return false; } 304 #endif 305 306 bool isRoot() const { return document()->documentElement() == m_node; } 307 bool isBody() const; 308 bool isHR() const; 309 bool isLegend() const; 310 311 bool isHTMLMarquee() const; 312 313 inline bool isBeforeContent() const; 314 inline bool isAfterContent() const; 315 static inline bool isBeforeContent(const RenderObject* obj) { return obj && obj->isBeforeContent(); } 316 static inline bool isAfterContent(const RenderObject* obj) { return obj && obj->isAfterContent(); } 317 318 bool childrenInline() const { return m_childrenInline; } 319 void setChildrenInline(bool b = true) { m_childrenInline = b; } 320 bool hasColumns() const { return m_hasColumns; } 321 void setHasColumns(bool b = true) { m_hasColumns = b; } 322 323 virtual bool requiresForcedStyleRecalcPropagation() const { return false; } 324 325 #if ENABLE(MATHML) 326 virtual bool isRenderMathMLBlock() const { return false; } 327 #endif // ENABLE(MATHML) 328 329 #if ENABLE(SVG) 330 // FIXME: Until all SVG renders can be subclasses of RenderSVGModelObject we have 331 // to add SVG renderer methods to RenderObject with an ASSERT_NOT_REACHED() default implementation. 332 virtual bool isSVGRoot() const { return false; } 333 virtual bool isSVGContainer() const { return false; } 334 virtual bool isSVGViewportContainer() const { return false; } 335 virtual bool isSVGGradientStop() const { return false; } 336 virtual bool isSVGHiddenContainer() const { return false; } 337 virtual bool isSVGPath() const { return false; } 338 virtual bool isSVGText() const { return false; } 339 virtual bool isSVGTextPath() const { return false; } 340 virtual bool isSVGInline() const { return false; } 341 virtual bool isSVGInlineText() const { return false; } 342 virtual bool isSVGImage() const { return false; } 343 virtual bool isSVGForeignObject() const { return false; } 344 virtual bool isSVGResourceContainer() const { return false; } 345 virtual bool isSVGResourceFilter() const { return false; } 346 virtual bool isSVGResourceFilterPrimitive() const { return false; } 347 virtual bool isSVGShadowTreeRootContainer() const { return false; } 348 349 virtual RenderSVGResourceContainer* toRenderSVGResourceContainer(); 350 351 // FIXME: Those belong into a SVG specific base-class for all renderers (see above) 352 // Unfortunately we don't have such a class yet, because it's not possible for all renderers 353 // to inherit from RenderSVGObject -> RenderObject (some need RenderBlock inheritance for instance) 354 virtual void setNeedsTransformUpdate() { } 355 virtual void setNeedsBoundariesUpdate(); 356 357 // Per SVG 1.1 objectBoundingBox ignores clipping, masking, filter effects, opacity and stroke-width. 358 // This is used for all computation of objectBoundingBox relative units and by SVGLocateable::getBBox(). 359 // NOTE: Markers are not specifically ignored here by SVG 1.1 spec, but we ignore them 360 // since stroke-width is ignored (and marker size can depend on stroke-width). 361 // objectBoundingBox is returned local coordinates. 362 // The name objectBoundingBox is taken from the SVG 1.1 spec. 363 virtual FloatRect objectBoundingBox() const; 364 virtual FloatRect strokeBoundingBox() const; 365 366 // Returns the smallest rectangle enclosing all of the painted content 367 // respecting clipping, masking, filters, opacity, stroke-width and markers 368 virtual FloatRect repaintRectInLocalCoordinates() const; 369 370 // This only returns the transform="" value from the element 371 // most callsites want localToParentTransform() instead. 372 virtual AffineTransform localTransform() const; 373 374 // Returns the full transform mapping from local coordinates to local coords for the parent SVG renderer 375 // This includes any viewport transforms and x/y offsets as well as the transform="" value off the element. 376 virtual const AffineTransform& localToParentTransform() const; 377 378 // SVG uses FloatPoint precise hit testing, and passes the point in parent 379 // coordinates instead of in repaint container coordinates. Eventually the 380 // rest of the rendering tree will move to a similar model. 381 virtual bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction); 382 #endif 383 384 bool isAnonymous() const { return m_isAnonymous; } 385 void setIsAnonymous(bool b) { m_isAnonymous = b; } 386 bool isAnonymousBlock() const 387 { 388 // This function is kept in sync with anonymous block creation conditions in 389 // RenderBlock::createAnonymousBlock(). This includes creating an anonymous 390 // RenderBlock having a BLOCK or BOX display. Other classes such as RenderTextFragment 391 // are not RenderBlocks and will return false. See https://bugs.webkit.org/show_bug.cgi?id=56709. 392 return m_isAnonymous && (style()->display() == BLOCK || style()->display() == BOX) && style()->styleType() == NOPSEUDO && isRenderBlock() && !isListMarker(); 393 } 394 bool isAnonymousColumnsBlock() const { return style()->specifiesColumns() && isAnonymousBlock(); } 395 bool isAnonymousColumnSpanBlock() const { return style()->columnSpan() && isAnonymousBlock(); } 396 bool isElementContinuation() const { return node() && node()->renderer() != this; } 397 bool isInlineElementContinuation() const { return isElementContinuation() && isInline(); } 398 bool isBlockElementContinuation() const { return isElementContinuation() && !isInline(); } 399 virtual RenderBoxModelObject* virtualContinuation() const { return 0; } 400 401 bool isFloating() const { return m_floating; } 402 bool isPositioned() const { return m_positioned; } // absolute or fixed positioning 403 bool isRelPositioned() const { return m_relPositioned; } // relative positioning 404 bool isText() const { return m_isText; } 405 bool isBox() const { return m_isBox; } 406 bool isInline() const { return m_inline; } // inline object 407 bool isRunIn() const { return style()->display() == RUN_IN; } // run-in object 408 bool isDragging() const { return m_isDragging; } 409 bool isReplaced() const { return m_replaced; } // a "replaced" element (see CSS) 410 bool isHorizontalWritingMode() const { return m_horizontalWritingMode; } 411 412 bool hasLayer() const { return m_hasLayer; } 413 414 bool hasBoxDecorations() const { return m_paintBackground; } 415 bool mustRepaintBackgroundOrBorder() const; 416 bool hasBackground() const { return style()->hasBackground(); } 417 bool needsLayout() const { return m_needsLayout || m_normalChildNeedsLayout || m_posChildNeedsLayout || m_needsSimplifiedNormalFlowLayout || m_needsPositionedMovementLayout; } 418 bool selfNeedsLayout() const { return m_needsLayout; } 419 bool needsPositionedMovementLayout() const { return m_needsPositionedMovementLayout; } 420 bool needsPositionedMovementLayoutOnly() const { return m_needsPositionedMovementLayout && !m_needsLayout && !m_normalChildNeedsLayout && !m_posChildNeedsLayout && !m_needsSimplifiedNormalFlowLayout; } 421 bool posChildNeedsLayout() const { return m_posChildNeedsLayout; } 422 bool needsSimplifiedNormalFlowLayout() const { return m_needsSimplifiedNormalFlowLayout; } 423 bool normalChildNeedsLayout() const { return m_normalChildNeedsLayout; } 424 425 bool preferredLogicalWidthsDirty() const { return m_preferredLogicalWidthsDirty; } 426 427 bool isSelectionBorder() const; 428 429 bool hasClip() const { return isPositioned() && style()->hasClip(); } 430 bool hasOverflowClip() const { return m_hasOverflowClip; } 431 432 bool hasTransform() const { return m_hasTransform; } 433 bool hasMask() const { return style() && style()->hasMask(); } 434 435 inline bool preservesNewline() const; 436 437 #if !HAVE(PATH_BASED_BORDER_RADIUS_DRAWING) 438 // FIXME: This function should be removed when all ports implement GraphicsContext::clipConvexPolygon()!! 439 // At that time, everyone can use RenderObject::drawBoxSideFromPath() instead. This should happen soon. 440 void drawArcForBoxSide(GraphicsContext*, int x, int y, float thickness, const IntSize& radius, int angleStart, 441 int angleSpan, BoxSide, Color, EBorderStyle, bool firstCorner); 442 #endif 443 444 IntRect borderInnerRect(const IntRect&, unsigned short topWidth, unsigned short bottomWidth, 445 unsigned short leftWidth, unsigned short rightWidth) const; 446 447 // The pseudo element style can be cached or uncached. Use the cached method if the pseudo element doesn't respect 448 // any pseudo classes (and therefore has no concept of changing state). 449 RenderStyle* getCachedPseudoStyle(PseudoId, RenderStyle* parentStyle = 0) const; 450 PassRefPtr<RenderStyle> getUncachedPseudoStyle(PseudoId, RenderStyle* parentStyle = 0, RenderStyle* ownStyle = 0) const; 451 452 virtual void updateDragState(bool dragOn); 453 454 RenderView* view() const; 455 456 // Returns true if this renderer is rooted, and optionally returns the hosting view (the root of the hierarchy). 457 bool isRooted(RenderView** = 0); 458 459 Node* node() const { return m_isAnonymous ? 0 : m_node; } 460 461 // Returns the styled node that caused the generation of this renderer. 462 // This is the same as node() except for renderers of :before and :after 463 // pseudo elements for which their parent node is returned. 464 Node* generatingNode() const { return m_node == document() ? 0 : m_node; } 465 void setNode(Node* node) { m_node = node; } 466 467 Document* document() const { return m_node->document(); } 468 Frame* frame() const { return document()->frame(); } 469 470 bool hasOutlineAnnotation() const; 471 bool hasOutline() const { return style()->hasOutline() || hasOutlineAnnotation(); } 472 473 // Returns the object containing this one. Can be different from parent for positioned elements. 474 // If repaintContainer and repaintContainerSkipped are not null, on return *repaintContainerSkipped 475 // is true if the renderer returned is an ancestor of repaintContainer. 476 RenderObject* container(RenderBoxModelObject* repaintContainer = 0, bool* repaintContainerSkipped = 0) const; 477 478 virtual RenderObject* hoverAncestor() const { return parent(); } 479 480 // IE Extension that can be called on any RenderObject. See the implementation for the details. 481 RenderBoxModelObject* offsetParent() const; 482 483 void markContainingBlocksForLayout(bool scheduleRelayout = true, RenderObject* newRoot = 0); 484 void setNeedsLayout(bool b, bool markParents = true); 485 void setChildNeedsLayout(bool b, bool markParents = true); 486 void setNeedsPositionedMovementLayout(); 487 void setNeedsSimplifiedNormalFlowLayout(); 488 void setPreferredLogicalWidthsDirty(bool, bool markParents = true); 489 void invalidateContainerPreferredLogicalWidths(); 490 491 void setNeedsLayoutAndPrefWidthsRecalc() 492 { 493 setNeedsLayout(true); 494 setPreferredLogicalWidthsDirty(true); 495 } 496 497 void setPositioned(bool b = true) { m_positioned = b; } 498 void setRelPositioned(bool b = true) { m_relPositioned = b; } 499 void setFloating(bool b = true) { m_floating = b; } 500 void setInline(bool b = true) { m_inline = b; } 501 void setHasBoxDecorations(bool b = true) { m_paintBackground = b; } 502 void setIsText() { m_isText = true; } 503 void setIsBox() { m_isBox = true; } 504 void setReplaced(bool b = true) { m_replaced = b; } 505 void setHorizontalWritingMode(bool b = true) { m_horizontalWritingMode = b; } 506 void setHasOverflowClip(bool b = true) { m_hasOverflowClip = b; } 507 void setHasLayer(bool b = true) { m_hasLayer = b; } 508 void setHasTransform(bool b = true) { m_hasTransform = b; } 509 void setHasReflection(bool b = true) { m_hasReflection = b; } 510 511 void scheduleRelayout(); 512 513 void updateFillImages(const FillLayer*, const FillLayer*); 514 void updateImage(StyleImage*, StyleImage*); 515 516 virtual void paint(PaintInfo&, int tx, int ty); 517 518 // Recursive function that computes the size and position of this object and all its descendants. 519 virtual void layout(); 520 521 /* This function performs a layout only if one is needed. */ 522 void layoutIfNeeded() { if (needsLayout()) layout(); } 523 524 // used for element state updates that cannot be fixed with a 525 // repaint and do not need a relayout 526 virtual void updateFromElement() { } 527 528 #if ENABLE(DASHBOARD_SUPPORT) 529 virtual void addDashboardRegions(Vector<DashboardRegionValue>&); 530 void collectDashboardRegions(Vector<DashboardRegionValue>&); 531 #endif 532 533 bool hitTest(const HitTestRequest&, HitTestResult&, const IntPoint&, int tx, int ty, HitTestFilter = HitTestAll); 534 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction); 535 virtual void updateHitTestResult(HitTestResult&, const IntPoint&); 536 537 VisiblePosition positionForCoordinates(int x, int y); 538 virtual VisiblePosition positionForPoint(const IntPoint&); 539 VisiblePosition createVisiblePosition(int offset, EAffinity); 540 VisiblePosition createVisiblePosition(const Position&); 541 542 virtual void dirtyLinesFromChangedChild(RenderObject*); 543 544 // Called to update a style that is allowed to trigger animations. 545 // FIXME: Right now this will typically be called only when updating happens from the DOM on explicit elements. 546 // We don't yet handle generated content animation such as first-letter or before/after (we'll worry about this later). 547 void setAnimatableStyle(PassRefPtr<RenderStyle>); 548 549 // Set the style of the object and update the state of the object accordingly. 550 virtual void setStyle(PassRefPtr<RenderStyle>); 551 552 // Updates only the local style ptr of the object. Does not update the state of the object, 553 // and so only should be called when the style is known not to have changed (or from setStyle). 554 void setStyleInternal(PassRefPtr<RenderStyle>); 555 556 // returns the containing block level element for this element. 557 RenderBlock* containingBlock() const; 558 559 // Convert the given local point to absolute coordinates 560 // FIXME: Temporary. If useTransforms is true, take transforms into account. Eventually localToAbsolute() will always be transform-aware. 561 FloatPoint localToAbsolute(const FloatPoint& localPoint = FloatPoint(), bool fixed = false, bool useTransforms = false) const; 562 FloatPoint absoluteToLocal(const FloatPoint&, bool fixed = false, bool useTransforms = false) const; 563 564 // Convert a local quad to absolute coordinates, taking transforms into account. 565 FloatQuad localToAbsoluteQuad(const FloatQuad& quad, bool fixed = false) const 566 { 567 return localToContainerQuad(quad, 0, fixed); 568 } 569 // Convert a local quad into the coordinate system of container, taking transforms into account. 570 FloatQuad localToContainerQuad(const FloatQuad&, RenderBoxModelObject* repaintContainer, bool fixed = false) const; 571 572 // Return the offset from the container() renderer (excluding transforms). In multi-column layout, 573 // different offsets apply at different points, so return the offset that applies to the given point. 574 virtual IntSize offsetFromContainer(RenderObject*, const IntPoint&) const; 575 // Return the offset from an object up the container() chain. Asserts that none of the intermediate objects have transforms. 576 IntSize offsetFromAncestorContainer(RenderObject*) const; 577 578 virtual void absoluteRects(Vector<IntRect>&, int, int) { } 579 // FIXME: useTransforms should go away eventually 580 IntRect absoluteBoundingBoxRect(bool useTransforms = false); 581 582 // Build an array of quads in absolute coords for line boxes 583 virtual void absoluteQuads(Vector<FloatQuad>&) { } 584 585 void absoluteFocusRingQuads(Vector<FloatQuad>&); 586 587 // the rect that will be painted if this object is passed as the paintingRoot 588 IntRect paintingRootRect(IntRect& topLevelRect); 589 590 virtual int minPreferredLogicalWidth() const { return 0; } 591 virtual int maxPreferredLogicalWidth() const { return 0; } 592 593 RenderStyle* style() const { return m_style.get(); } 594 RenderStyle* firstLineStyle() const { return document()->usesFirstLineRules() ? firstLineStyleSlowCase() : style(); } 595 RenderStyle* style(bool firstLine) const { return firstLine ? firstLineStyle() : style(); } 596 597 // Used only by Element::pseudoStyleCacheIsInvalid to get a first line style based off of a 598 // given new style, without accessing the cache. 599 PassRefPtr<RenderStyle> uncachedFirstLineStyle(RenderStyle*) const; 600 601 // Anonymous blocks that are part of of a continuation chain will return their inline continuation's outline style instead. 602 // This is typically only relevant when repainting. 603 virtual RenderStyle* outlineStyleForRepaint() const { return style(); } 604 605 void getTextDecorationColors(int decorations, Color& underline, Color& overline, 606 Color& linethrough, bool quirksMode = false); 607 608 // Return the RenderBox in the container chain which is responsible for painting this object, or 0 609 // if painting is root-relative. This is the container that should be passed to the 'forRepaint' 610 // methods. 611 RenderBoxModelObject* containerForRepaint() const; 612 // Actually do the repaint of rect r for this object which has been computed in the coordinate space 613 // of repaintContainer. If repaintContainer is 0, repaint via the view. 614 void repaintUsingContainer(RenderBoxModelObject* repaintContainer, const IntRect& r, bool immediate = false); 615 616 // Repaint the entire object. Called when, e.g., the color of a border changes, or when a border 617 // style changes. 618 void repaint(bool immediate = false); 619 620 // Repaint a specific subrectangle within a given object. The rect |r| is in the object's coordinate space. 621 void repaintRectangle(const IntRect&, bool immediate = false); 622 623 // Repaint only if our old bounds and new bounds are different. The caller may pass in newBounds and newOutlineBox if they are known. 624 bool repaintAfterLayoutIfNeeded(RenderBoxModelObject* repaintContainer, const IntRect& oldBounds, const IntRect& oldOutlineBox, const IntRect* newBoundsPtr = 0, const IntRect* newOutlineBoxPtr = 0); 625 626 // Repaint only if the object moved. 627 virtual void repaintDuringLayoutIfMoved(const IntRect& rect); 628 629 // Called to repaint a block's floats. 630 virtual void repaintOverhangingFloats(bool paintAllDescendants = false); 631 632 bool checkForRepaintDuringLayout() const; 633 634 // Returns the rect that should be repainted whenever this object changes. The rect is in the view's 635 // coordinate space. This method deals with outlines and overflow. 636 IntRect absoluteClippedOverflowRect() 637 { 638 return clippedOverflowRectForRepaint(0); 639 } 640 virtual IntRect clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer); 641 virtual IntRect rectWithOutlineForRepaint(RenderBoxModelObject* repaintContainer, int outlineWidth); 642 643 // Given a rect in the object's coordinate space, compute a rect suitable for repainting 644 // that rect in view coordinates. 645 void computeAbsoluteRepaintRect(IntRect& r, bool fixed = false) 646 { 647 return computeRectForRepaint(0, r, fixed); 648 } 649 // Given a rect in the object's coordinate space, compute a rect suitable for repainting 650 // that rect in the coordinate space of repaintContainer. 651 virtual void computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect&, bool fixed = false); 652 653 // If multiple-column layout results in applying an offset to the given point, add the same 654 // offset to the given size. 655 virtual void adjustForColumns(IntSize&, const IntPoint&) const { } 656 657 virtual unsigned int length() const { return 1; } 658 659 bool isFloatingOrPositioned() const { return (isFloating() || isPositioned()); } 660 661 bool isTransparent() const { return style()->opacity() < 1.0f; } 662 float opacity() const { return style()->opacity(); } 663 664 bool hasReflection() const { return m_hasReflection; } 665 666 // Applied as a "slop" to dirty rect checks during the outline painting phase's dirty-rect checks. 667 int maximalOutlineSize(PaintPhase) const; 668 669 void setHasMarkupTruncation(bool b = true) { m_hasMarkupTruncation = b; } 670 bool hasMarkupTruncation() const { return m_hasMarkupTruncation; } 671 672 enum SelectionState { 673 SelectionNone, // The object is not selected. 674 SelectionStart, // The object either contains the start of a selection run or is the start of a run 675 SelectionInside, // The object is fully encompassed by a selection run 676 SelectionEnd, // The object either contains the end of a selection run or is the end of a run 677 SelectionBoth // The object contains an entire run or is the sole selected object in that run 678 }; 679 680 // The current selection state for an object. For blocks, the state refers to the state of the leaf 681 // descendants (as described above in the SelectionState enum declaration). 682 SelectionState selectionState() const { return static_cast<SelectionState>(m_selectionState);; } 683 684 // Sets the selection state for an object. 685 virtual void setSelectionState(SelectionState state) { m_selectionState = state; } 686 687 // A single rectangle that encompasses all of the selected objects within this object. Used to determine the tightest 688 // possible bounding box for the selection. 689 IntRect selectionRect(bool clipToVisibleContent = true) { return selectionRectForRepaint(0, clipToVisibleContent); } 690 virtual IntRect selectionRectForRepaint(RenderBoxModelObject* /*repaintContainer*/, bool /*clipToVisibleContent*/ = true) { return IntRect(); } 691 692 // Whether or not an object can be part of the leaf elements of the selection. 693 virtual bool canBeSelectionLeaf() const { return false; } 694 695 // Whether or not a block has selected children. 696 bool hasSelectedChildren() const { return m_selectionState != SelectionNone; } 697 698 // Obtains the selection colors that should be used when painting a selection. 699 Color selectionBackgroundColor() const; 700 Color selectionForegroundColor() const; 701 Color selectionEmphasisMarkColor() const; 702 703 // Whether or not a given block needs to paint selection gaps. 704 virtual bool shouldPaintSelectionGaps() const { return false; } 705 706 #if ENABLE(DRAG_SUPPORT) 707 Node* draggableNode(bool dhtmlOK, bool uaOK, int x, int y, bool& dhtmlWillDrag) const; 708 #endif 709 710 /** 711 * Returns the local coordinates of the caret within this render object. 712 * @param caretOffset zero-based offset determining position within the render object. 713 * @param extraWidthToEndOfLine optional out arg to give extra width to end of line - 714 * useful for character range rect computations 715 */ 716 virtual IntRect localCaretRect(InlineBox*, int caretOffset, int* extraWidthToEndOfLine = 0); 717 718 bool isMarginBeforeQuirk() const { return m_marginBeforeQuirk; } 719 bool isMarginAfterQuirk() const { return m_marginAfterQuirk; } 720 void setMarginBeforeQuirk(bool b = true) { m_marginBeforeQuirk = b; } 721 void setMarginAfterQuirk(bool b = true) { m_marginAfterQuirk = b; } 722 723 // When performing a global document tear-down, the renderer of the document is cleared. We use this 724 // as a hook to detect the case of document destruction and don't waste time doing unnecessary work. 725 bool documentBeingDestroyed() const; 726 727 virtual void destroy(); 728 729 // Virtual function helpers for CSS3 Flexible Box Layout 730 virtual bool isFlexibleBox() const { return false; } 731 virtual bool isFlexingChildren() const { return false; } 732 virtual bool isStretchingChildren() const { return false; } 733 734 virtual bool isCombineText() const { return false; } 735 736 virtual int caretMinOffset() const; 737 virtual int caretMaxOffset() const; 738 virtual unsigned caretMaxRenderedOffset() const; 739 740 virtual int previousOffset(int current) const; 741 virtual int previousOffsetForBackwardDeletion(int current) const; 742 virtual int nextOffset(int current) const; 743 744 virtual void imageChanged(CachedImage*, const IntRect* = 0); 745 virtual void imageChanged(WrappedImagePtr, const IntRect* = 0) { } 746 virtual bool willRenderImage(CachedImage*); 747 748 void selectionStartEnd(int& spos, int& epos) const; 749 750 bool hasOverrideSize() const { return m_hasOverrideSize; } 751 void setHasOverrideSize(bool b) { m_hasOverrideSize = b; } 752 753 void remove() { if (parent()) parent()->removeChild(this); } 754 755 AnimationController* animation() const; 756 757 bool visibleToHitTesting() const { return style()->visibility() == VISIBLE && style()->pointerEvents() != PE_NONE; } 758 759 // Map points and quads through elements, potentially via 3d transforms. You should never need to call these directly; use 760 // localToAbsolute/absoluteToLocal methods instead. 761 virtual void mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool useTransforms, bool fixed, TransformState&) const; 762 virtual void mapAbsoluteToLocalPoint(bool fixed, bool useTransforms, TransformState&) const; 763 764 bool shouldUseTransformFromContainer(const RenderObject* container) const; 765 void getTransformFromContainer(const RenderObject* container, const IntSize& offsetInContainer, TransformationMatrix&) const; 766 767 virtual void addFocusRingRects(Vector<IntRect>&, int /*tx*/, int /*ty*/) { }; 768 769 IntRect absoluteOutlineBounds() const 770 { 771 return outlineBoundsForRepaint(0); 772 } 773 774 protected: 775 // Overrides should call the superclass at the end 776 virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle); 777 // Overrides should call the superclass at the start 778 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); 779 780 void drawLineForBoxSide(GraphicsContext*, int x1, int y1, int x2, int y2, BoxSide, 781 Color, EBorderStyle, int adjbw1, int adjbw2, bool antialias = false); 782 783 void paintFocusRing(GraphicsContext*, int tx, int ty, RenderStyle*); 784 void paintOutline(GraphicsContext*, int tx, int ty, int w, int h); 785 void addPDFURLRect(GraphicsContext*, const IntRect&); 786 787 virtual IntRect viewRect() const; 788 789 void adjustRectForOutlineAndShadow(IntRect&) const; 790 791 void arenaDelete(RenderArena*, void* objectBase); 792 793 virtual IntRect outlineBoundsForRepaint(RenderBoxModelObject* /*repaintContainer*/, IntPoint* /*cachedOffsetToRepaintContainer*/ = 0) const { return IntRect(); } 794 795 class LayoutRepainter { 796 public: 797 LayoutRepainter(RenderObject& object, bool checkForRepaint, const IntRect* oldBounds = 0) 798 : m_object(object) 799 , m_repaintContainer(0) 800 , m_checkForRepaint(checkForRepaint) 801 { 802 if (m_checkForRepaint) { 803 m_repaintContainer = m_object.containerForRepaint(); 804 m_oldBounds = oldBounds ? *oldBounds : m_object.clippedOverflowRectForRepaint(m_repaintContainer); 805 m_oldOutlineBox = m_object.outlineBoundsForRepaint(m_repaintContainer); 806 } 807 } 808 809 // Return true if it repainted. 810 bool repaintAfterLayout() 811 { 812 return m_checkForRepaint ? m_object.repaintAfterLayoutIfNeeded(m_repaintContainer, m_oldBounds, m_oldOutlineBox) : false; 813 } 814 815 bool checkForRepaint() const { return m_checkForRepaint; } 816 817 private: 818 RenderObject& m_object; 819 RenderBoxModelObject* m_repaintContainer; 820 IntRect m_oldBounds; 821 IntRect m_oldOutlineBox; 822 bool m_checkForRepaint; 823 }; 824 825 private: 826 RenderStyle* firstLineStyleSlowCase() const; 827 StyleDifference adjustStyleDifference(StyleDifference, unsigned contextSensitiveProperties) const; 828 829 Color selectionColor(int colorProperty) const; 830 831 RefPtr<RenderStyle> m_style; 832 833 Node* m_node; 834 835 RenderObject* m_parent; 836 RenderObject* m_previous; 837 RenderObject* m_next; 838 839 #ifndef NDEBUG 840 bool m_hasAXObject; 841 bool m_setNeedsLayoutForbidden : 1; 842 #endif 843 844 // 32 bits have been used here. THERE ARE NO FREE BITS AVAILABLE. 845 bool m_needsLayout : 1; 846 bool m_needsPositionedMovementLayout :1; 847 bool m_normalChildNeedsLayout : 1; 848 bool m_posChildNeedsLayout : 1; 849 bool m_needsSimplifiedNormalFlowLayout : 1; 850 bool m_preferredLogicalWidthsDirty : 1; 851 bool m_floating : 1; 852 853 bool m_positioned : 1; 854 bool m_relPositioned : 1; 855 bool m_paintBackground : 1; // if the box has something to paint in the 856 // background painting phase (background, border, etc) 857 858 bool m_isAnonymous : 1; 859 bool m_isText : 1; 860 bool m_isBox : 1; 861 bool m_inline : 1; 862 bool m_replaced : 1; 863 bool m_horizontalWritingMode : 1; 864 bool m_isDragging : 1; 865 866 bool m_hasLayer : 1; 867 bool m_hasOverflowClip : 1; // Set in the case of overflow:auto/scroll/hidden 868 bool m_hasTransform : 1; 869 bool m_hasReflection : 1; 870 871 bool m_hasOverrideSize : 1; 872 873 public: 874 bool m_hasCounterNodeMap : 1; 875 bool m_everHadLayout : 1; 876 877 private: 878 // These bitfields are moved here from subclasses to pack them together 879 // from RenderBlock 880 bool m_childrenInline : 1; 881 bool m_marginBeforeQuirk : 1; 882 bool m_marginAfterQuirk : 1; 883 bool m_hasMarkupTruncation : 1; 884 unsigned m_selectionState : 3; // SelectionState 885 bool m_hasColumns : 1; 886 887 // from RenderTableCell 888 bool m_cellWidthChanged : 1; 889 890 private: 891 // Store state between styleWillChange and styleDidChange 892 static bool s_affectsParentBlock; 893 }; 894 895 inline bool RenderObject::documentBeingDestroyed() const 896 { 897 return !document()->renderer(); 898 } 899 900 inline bool RenderObject::isBeforeContent() const 901 { 902 if (style()->styleType() != BEFORE) 903 return false; 904 // Text nodes don't have their own styles, so ignore the style on a text node. 905 if (isText() && !isBR()) 906 return false; 907 return true; 908 } 909 910 inline bool RenderObject::isAfterContent() const 911 { 912 if (style()->styleType() != AFTER) 913 return false; 914 // Text nodes don't have their own styles, so ignore the style on a text node. 915 if (isText() && !isBR()) 916 return false; 917 return true; 918 } 919 920 inline void RenderObject::setNeedsLayout(bool b, bool markParents) 921 { 922 bool alreadyNeededLayout = m_needsLayout; 923 m_needsLayout = b; 924 if (b) { 925 ASSERT(!isSetNeedsLayoutForbidden()); 926 if (!alreadyNeededLayout) { 927 if (markParents) 928 markContainingBlocksForLayout(); 929 if (hasLayer()) 930 setLayerNeedsFullRepaint(); 931 } 932 } else { 933 m_everHadLayout = true; 934 m_posChildNeedsLayout = false; 935 m_needsSimplifiedNormalFlowLayout = false; 936 m_normalChildNeedsLayout = false; 937 m_needsPositionedMovementLayout = false; 938 } 939 } 940 941 inline void RenderObject::setChildNeedsLayout(bool b, bool markParents) 942 { 943 bool alreadyNeededLayout = m_normalChildNeedsLayout; 944 m_normalChildNeedsLayout = b; 945 if (b) { 946 ASSERT(!isSetNeedsLayoutForbidden()); 947 if (!alreadyNeededLayout && markParents) 948 markContainingBlocksForLayout(); 949 } else { 950 m_posChildNeedsLayout = false; 951 m_needsSimplifiedNormalFlowLayout = false; 952 m_normalChildNeedsLayout = false; 953 m_needsPositionedMovementLayout = false; 954 } 955 } 956 957 inline void RenderObject::setNeedsPositionedMovementLayout() 958 { 959 bool alreadyNeededLayout = m_needsPositionedMovementLayout; 960 m_needsPositionedMovementLayout = true; 961 ASSERT(!isSetNeedsLayoutForbidden()); 962 if (!alreadyNeededLayout) { 963 markContainingBlocksForLayout(); 964 if (hasLayer()) 965 setLayerNeedsFullRepaint(); 966 } 967 } 968 969 inline void RenderObject::setNeedsSimplifiedNormalFlowLayout() 970 { 971 bool alreadyNeededLayout = m_needsSimplifiedNormalFlowLayout; 972 m_needsSimplifiedNormalFlowLayout = true; 973 ASSERT(!isSetNeedsLayoutForbidden()); 974 if (!alreadyNeededLayout) { 975 markContainingBlocksForLayout(); 976 if (hasLayer()) 977 setLayerNeedsFullRepaint(); 978 } 979 } 980 981 inline bool objectIsRelayoutBoundary(const RenderObject *obj) 982 { 983 // FIXME: In future it may be possible to broaden this condition in order to improve performance. 984 // Table cells are excluded because even when their CSS height is fixed, their height() 985 // may depend on their contents. 986 return obj->isTextControl() 987 || (obj->hasOverflowClip() && !obj->style()->width().isIntrinsicOrAuto() && !obj->style()->height().isIntrinsicOrAuto() && !obj->style()->height().isPercent() && !obj->isTableCell()) 988 #if ENABLE(SVG) 989 || obj->isSVGRoot() 990 #endif 991 ; 992 } 993 994 inline void RenderObject::markContainingBlocksForLayout(bool scheduleRelayout, RenderObject* newRoot) 995 { 996 ASSERT(!scheduleRelayout || !newRoot); 997 998 RenderObject* o = container(); 999 RenderObject* last = this; 1000 1001 bool simplifiedNormalFlowLayout = needsSimplifiedNormalFlowLayout() && !selfNeedsLayout() && !normalChildNeedsLayout(); 1002 1003 while (o) { 1004 // Don't mark the outermost object of an unrooted subtree. That object will be 1005 // marked when the subtree is added to the document. 1006 RenderObject* container = o->container(); 1007 if (!container && !o->isRenderView()) 1008 return; 1009 if (!last->isText() && (last->style()->position() == FixedPosition || last->style()->position() == AbsolutePosition)) { 1010 while (o && !o->isRenderBlock()) // Skip relatively positioned inlines and get to the enclosing RenderBlock. 1011 o = o->container(); 1012 if (!o || o->m_posChildNeedsLayout) 1013 return; 1014 o->m_posChildNeedsLayout = true; 1015 simplifiedNormalFlowLayout = true; 1016 ASSERT(!o->isSetNeedsLayoutForbidden()); 1017 } else if (simplifiedNormalFlowLayout) { 1018 if (o->m_needsSimplifiedNormalFlowLayout) 1019 return; 1020 o->m_needsSimplifiedNormalFlowLayout = true; 1021 ASSERT(!o->isSetNeedsLayoutForbidden()); 1022 } else { 1023 if (o->m_normalChildNeedsLayout) 1024 return; 1025 o->m_normalChildNeedsLayout = true; 1026 ASSERT(!o->isSetNeedsLayoutForbidden()); 1027 } 1028 1029 if (o == newRoot) 1030 return; 1031 1032 last = o; 1033 if (scheduleRelayout && objectIsRelayoutBoundary(last)) 1034 break; 1035 o = container; 1036 } 1037 1038 if (scheduleRelayout) 1039 last->scheduleRelayout(); 1040 } 1041 1042 inline bool RenderObject::preservesNewline() const 1043 { 1044 #if ENABLE(SVG) 1045 if (isSVGInlineText()) 1046 return false; 1047 #endif 1048 1049 return style()->preserveNewline(); 1050 } 1051 1052 inline void makeMatrixRenderable(TransformationMatrix& matrix, bool has3DRendering) 1053 { 1054 #if !ENABLE(3D_RENDERING) 1055 UNUSED_PARAM(has3DRendering); 1056 matrix.makeAffine(); 1057 #else 1058 if (!has3DRendering) 1059 matrix.makeAffine(); 1060 #endif 1061 } 1062 1063 inline int adjustForAbsoluteZoom(int value, RenderObject* renderer) 1064 { 1065 return adjustForAbsoluteZoom(value, renderer->style()); 1066 } 1067 1068 inline FloatPoint adjustFloatPointForAbsoluteZoom(const FloatPoint& point, RenderObject* renderer) 1069 { 1070 // The result here is in floats, so we don't need the truncation hack from the integer version above. 1071 float zoomFactor = renderer->style()->effectiveZoom(); 1072 if (zoomFactor == 1) 1073 return point; 1074 return FloatPoint(point.x() / zoomFactor, point.y() / zoomFactor); 1075 } 1076 1077 inline void adjustFloatQuadForAbsoluteZoom(FloatQuad& quad, RenderObject* renderer) 1078 { 1079 quad.setP1(adjustFloatPointForAbsoluteZoom(quad.p1(), renderer)); 1080 quad.setP2(adjustFloatPointForAbsoluteZoom(quad.p2(), renderer)); 1081 quad.setP3(adjustFloatPointForAbsoluteZoom(quad.p3(), renderer)); 1082 quad.setP4(adjustFloatPointForAbsoluteZoom(quad.p4(), renderer)); 1083 } 1084 1085 inline void adjustFloatRectForAbsoluteZoom(FloatRect& rect, RenderObject* renderer) 1086 { 1087 RenderStyle* style = renderer->style(); 1088 rect.setX(adjustFloatForAbsoluteZoom(rect.x(), style)); 1089 rect.setY(adjustFloatForAbsoluteZoom(rect.y(), style)); 1090 rect.setWidth(adjustFloatForAbsoluteZoom(rect.width(), style)); 1091 rect.setHeight(adjustFloatForAbsoluteZoom(rect.height(), style)); 1092 } 1093 1094 inline FloatPoint adjustFloatPointForPageScale(const FloatPoint& point, float pageScale) 1095 { 1096 if (pageScale == 1) 1097 return point; 1098 return FloatPoint(point.x() / pageScale, point.y() / pageScale); 1099 } 1100 1101 inline void adjustFloatQuadForPageScale(FloatQuad& quad, float pageScale) 1102 { 1103 if (pageScale == 1) 1104 return; 1105 quad.setP1(adjustFloatPointForPageScale(quad.p1(), pageScale)); 1106 quad.setP2(adjustFloatPointForPageScale(quad.p2(), pageScale)); 1107 quad.setP3(adjustFloatPointForPageScale(quad.p3(), pageScale)); 1108 quad.setP4(adjustFloatPointForPageScale(quad.p4(), pageScale)); 1109 } 1110 1111 inline void adjustFloatRectForPageScale(FloatRect& rect, float pageScale) 1112 { 1113 if (pageScale == 1) 1114 return; 1115 rect.setX(rect.x() / pageScale); 1116 rect.setY(rect.y() / pageScale); 1117 rect.setWidth(rect.width() / pageScale); 1118 rect.setHeight(rect.height() / pageScale); 1119 } 1120 1121 } // namespace WebCore 1122 1123 #ifndef NDEBUG 1124 // Outside the WebCore namespace for ease of invocation from gdb. 1125 void showTree(const WebCore::RenderObject*); 1126 void showRenderTree(const WebCore::RenderObject* object1); 1127 // We don't make object2 an optional parameter so that showRenderTree 1128 // can be called from gdb easily. 1129 void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderObject* object2); 1130 #endif 1131 1132 #endif // RenderObject_h 1133
