1 /*
2 * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
4 * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23 #include "config.h"
24 #include "core/rendering/style/RenderStyle.h"
25
26 #include <algorithm>
27 #include "core/css/resolver/StyleResolver.h"
28 #include "core/rendering/RenderTheme.h"
29 #include "core/rendering/TextAutosizer.h"
30 #include "core/rendering/style/AppliedTextDecoration.h"
31 #include "core/rendering/style/BorderEdge.h"
32 #include "core/rendering/style/ContentData.h"
33 #include "core/rendering/style/DataEquivalency.h"
34 #include "core/rendering/style/QuotesData.h"
35 #include "core/rendering/style/ShadowList.h"
36 #include "core/rendering/style/StyleImage.h"
37 #include "core/rendering/style/StyleInheritedData.h"
38 #include "platform/LengthFunctions.h"
39 #include "platform/RuntimeEnabledFeatures.h"
40 #include "platform/fonts/Font.h"
41 #include "platform/fonts/FontSelector.h"
42 #include "platform/geometry/FloatRoundedRect.h"
43 #include "wtf/MathExtras.h"
44
45 namespace blink {
46
47 struct SameSizeAsBorderValue {
48 RGBA32 m_color;
49 unsigned m_width;
50 };
51
52 COMPILE_ASSERT(sizeof(BorderValue) == sizeof(SameSizeAsBorderValue), BorderValue_should_not_grow);
53
54 struct SameSizeAsRenderStyle : public RefCounted<SameSizeAsRenderStyle> {
55 void* dataRefs[7];
56 void* ownPtrs[1];
57 void* dataRefSvgStyle;
58
59 struct InheritedFlags {
60 unsigned m_bitfields[2];
61 } inherited_flags;
62
63 struct NonInheritedFlags {
64 unsigned m_bitfields[2];
65 } noninherited_flags;
66 };
67
68 COMPILE_ASSERT(sizeof(RenderStyle) == sizeof(SameSizeAsRenderStyle), RenderStyle_should_stay_small);
69
defaultStyle()70 inline RenderStyle* defaultStyle()
71 {
72 DEFINE_STATIC_REF(RenderStyle, s_defaultStyle, (RenderStyle::createDefaultStyle()));
73 return s_defaultStyle;
74 }
75
create()76 PassRefPtr<RenderStyle> RenderStyle::create()
77 {
78 return adoptRef(new RenderStyle());
79 }
80
createDefaultStyle()81 PassRefPtr<RenderStyle> RenderStyle::createDefaultStyle()
82 {
83 return adoptRef(new RenderStyle(DefaultStyle));
84 }
85
createAnonymousStyleWithDisplay(const RenderStyle * parentStyle,EDisplay display)86 PassRefPtr<RenderStyle> RenderStyle::createAnonymousStyleWithDisplay(const RenderStyle* parentStyle, EDisplay display)
87 {
88 RefPtr<RenderStyle> newStyle = RenderStyle::create();
89 newStyle->inheritFrom(parentStyle);
90 newStyle->inheritUnicodeBidiFrom(parentStyle);
91 newStyle->setDisplay(display);
92 return newStyle;
93 }
94
clone(const RenderStyle * other)95 PassRefPtr<RenderStyle> RenderStyle::clone(const RenderStyle* other)
96 {
97 return adoptRef(new RenderStyle(*other));
98 }
99
RenderStyle()100 ALWAYS_INLINE RenderStyle::RenderStyle()
101 : m_box(defaultStyle()->m_box)
102 , visual(defaultStyle()->visual)
103 , m_background(defaultStyle()->m_background)
104 , surround(defaultStyle()->surround)
105 , rareNonInheritedData(defaultStyle()->rareNonInheritedData)
106 , rareInheritedData(defaultStyle()->rareInheritedData)
107 , inherited(defaultStyle()->inherited)
108 , m_svgStyle(defaultStyle()->m_svgStyle)
109 {
110 setBitDefaults(); // Would it be faster to copy this from the default style?
111 COMPILE_ASSERT((sizeof(InheritedFlags) <= 8), InheritedFlags_does_not_grow);
112 COMPILE_ASSERT((sizeof(NonInheritedFlags) <= 8), NonInheritedFlags_does_not_grow);
113 }
114
RenderStyle(DefaultStyleTag)115 ALWAYS_INLINE RenderStyle::RenderStyle(DefaultStyleTag)
116 {
117 setBitDefaults();
118
119 m_box.init();
120 visual.init();
121 m_background.init();
122 surround.init();
123 rareNonInheritedData.init();
124 rareNonInheritedData.access()->m_deprecatedFlexibleBox.init();
125 rareNonInheritedData.access()->m_flexibleBox.init();
126 rareNonInheritedData.access()->m_marquee.init();
127 rareNonInheritedData.access()->m_multiCol.init();
128 rareNonInheritedData.access()->m_transform.init();
129 rareNonInheritedData.access()->m_willChange.init();
130 rareNonInheritedData.access()->m_filter.init();
131 rareNonInheritedData.access()->m_grid.init();
132 rareNonInheritedData.access()->m_gridItem.init();
133 rareInheritedData.init();
134 inherited.init();
135 m_svgStyle.init();
136 }
137
RenderStyle(const RenderStyle & o)138 ALWAYS_INLINE RenderStyle::RenderStyle(const RenderStyle& o)
139 : RefCounted<RenderStyle>()
140 , m_box(o.m_box)
141 , visual(o.visual)
142 , m_background(o.m_background)
143 , surround(o.surround)
144 , rareNonInheritedData(o.rareNonInheritedData)
145 , rareInheritedData(o.rareInheritedData)
146 , inherited(o.inherited)
147 , m_svgStyle(o.m_svgStyle)
148 , inherited_flags(o.inherited_flags)
149 , noninherited_flags(o.noninherited_flags)
150 {
151 }
152
diffPseudoStyles(const RenderStyle * oldStyle,const RenderStyle * newStyle)153 static StyleRecalcChange diffPseudoStyles(const RenderStyle* oldStyle, const RenderStyle* newStyle)
154 {
155 // If the pseudoStyles have changed, we want any StyleRecalcChange that is not NoChange
156 // because setStyle will do the right thing with anything else.
157 if (!oldStyle->hasAnyPublicPseudoStyles())
158 return NoChange;
159 for (PseudoId pseudoId = FIRST_PUBLIC_PSEUDOID; pseudoId < FIRST_INTERNAL_PSEUDOID; pseudoId = static_cast<PseudoId>(pseudoId + 1)) {
160 if (!oldStyle->hasPseudoStyle(pseudoId))
161 continue;
162 RenderStyle* newPseudoStyle = newStyle->getCachedPseudoStyle(pseudoId);
163 if (!newPseudoStyle)
164 return NoInherit;
165 RenderStyle* oldPseudoStyle = oldStyle->getCachedPseudoStyle(pseudoId);
166 if (oldPseudoStyle && *oldPseudoStyle != *newPseudoStyle)
167 return NoInherit;
168 }
169 return NoChange;
170 }
171
stylePropagationDiff(const RenderStyle * oldStyle,const RenderStyle * newStyle)172 StyleRecalcChange RenderStyle::stylePropagationDiff(const RenderStyle* oldStyle, const RenderStyle* newStyle)
173 {
174 if ((!oldStyle && newStyle) || (oldStyle && !newStyle))
175 return Reattach;
176
177 if (!oldStyle && !newStyle)
178 return NoChange;
179
180 if (oldStyle->display() != newStyle->display()
181 || oldStyle->hasPseudoStyle(FIRST_LETTER) != newStyle->hasPseudoStyle(FIRST_LETTER)
182 || oldStyle->columnSpan() != newStyle->columnSpan()
183 || !oldStyle->contentDataEquivalent(newStyle)
184 || oldStyle->hasTextCombine() != newStyle->hasTextCombine()
185 || oldStyle->justifyItems() != newStyle->justifyItems()
186 || oldStyle->alignItems() != newStyle->alignItems())
187 return Reattach;
188
189 if (*oldStyle == *newStyle)
190 return diffPseudoStyles(oldStyle, newStyle);
191
192 if (oldStyle->inheritedNotEqual(newStyle)
193 || oldStyle->hasExplicitlyInheritedProperties()
194 || newStyle->hasExplicitlyInheritedProperties())
195 return Inherit;
196
197 return NoInherit;
198 }
199
inheritFrom(const RenderStyle * inheritParent,IsAtShadowBoundary isAtShadowBoundary)200 void RenderStyle::inheritFrom(const RenderStyle* inheritParent, IsAtShadowBoundary isAtShadowBoundary)
201 {
202 if (isAtShadowBoundary == AtShadowBoundary) {
203 // Even if surrounding content is user-editable, shadow DOM should act as a single unit, and not necessarily be editable
204 EUserModify currentUserModify = userModify();
205 rareInheritedData = inheritParent->rareInheritedData;
206 setUserModify(currentUserModify);
207 } else
208 rareInheritedData = inheritParent->rareInheritedData;
209 inherited = inheritParent->inherited;
210 inherited_flags = inheritParent->inherited_flags;
211 if (m_svgStyle != inheritParent->m_svgStyle)
212 m_svgStyle.access()->inheritFrom(inheritParent->m_svgStyle.get());
213 }
214
copyNonInheritedFrom(const RenderStyle * other)215 void RenderStyle::copyNonInheritedFrom(const RenderStyle* other)
216 {
217 m_box = other->m_box;
218 visual = other->visual;
219 m_background = other->m_background;
220 surround = other->surround;
221 rareNonInheritedData = other->rareNonInheritedData;
222 // The flags are copied one-by-one because noninherited_flags contains a bunch of stuff other than real style data.
223 noninherited_flags.effectiveDisplay = other->noninherited_flags.effectiveDisplay;
224 noninherited_flags.originalDisplay = other->noninherited_flags.originalDisplay;
225 noninherited_flags.overflowX = other->noninherited_flags.overflowX;
226 noninherited_flags.overflowY = other->noninherited_flags.overflowY;
227 noninherited_flags.verticalAlign = other->noninherited_flags.verticalAlign;
228 noninherited_flags.clear = other->noninherited_flags.clear;
229 noninherited_flags.position = other->noninherited_flags.position;
230 noninherited_flags.floating = other->noninherited_flags.floating;
231 noninherited_flags.tableLayout = other->noninherited_flags.tableLayout;
232 noninherited_flags.unicodeBidi = other->noninherited_flags.unicodeBidi;
233 noninherited_flags.pageBreakBefore = other->noninherited_flags.pageBreakBefore;
234 noninherited_flags.pageBreakAfter = other->noninherited_flags.pageBreakAfter;
235 noninherited_flags.pageBreakInside = other->noninherited_flags.pageBreakInside;
236 noninherited_flags.explicitInheritance = other->noninherited_flags.explicitInheritance;
237 noninherited_flags.hasViewportUnits = other->noninherited_flags.hasViewportUnits;
238 if (m_svgStyle != other->m_svgStyle)
239 m_svgStyle.access()->copyNonInheritedFrom(other->m_svgStyle.get());
240 ASSERT(zoom() == initialZoom());
241 }
242
operator ==(const RenderStyle & o) const243 bool RenderStyle::operator==(const RenderStyle& o) const
244 {
245 // compare everything except the pseudoStyle pointer
246 return inherited_flags == o.inherited_flags
247 && noninherited_flags == o.noninherited_flags
248 && m_box == o.m_box
249 && visual == o.visual
250 && m_background == o.m_background
251 && surround == o.surround
252 && rareNonInheritedData == o.rareNonInheritedData
253 && rareInheritedData == o.rareInheritedData
254 && inherited == o.inherited
255 && m_svgStyle == o.m_svgStyle;
256 }
257
isStyleAvailable() const258 bool RenderStyle::isStyleAvailable() const
259 {
260 return this != StyleResolver::styleNotYetAvailable();
261 }
262
hasUniquePseudoStyle() const263 bool RenderStyle::hasUniquePseudoStyle() const
264 {
265 if (!m_cachedPseudoStyles || styleType() != NOPSEUDO)
266 return false;
267
268 for (size_t i = 0; i < m_cachedPseudoStyles->size(); ++i) {
269 RenderStyle* pseudoStyle = m_cachedPseudoStyles->at(i).get();
270 if (pseudoStyle->unique())
271 return true;
272 }
273
274 return false;
275 }
276
getCachedPseudoStyle(PseudoId pid) const277 RenderStyle* RenderStyle::getCachedPseudoStyle(PseudoId pid) const
278 {
279 if (!m_cachedPseudoStyles || !m_cachedPseudoStyles->size())
280 return 0;
281
282 if (styleType() != NOPSEUDO)
283 return 0;
284
285 for (size_t i = 0; i < m_cachedPseudoStyles->size(); ++i) {
286 RenderStyle* pseudoStyle = m_cachedPseudoStyles->at(i).get();
287 if (pseudoStyle->styleType() == pid)
288 return pseudoStyle;
289 }
290
291 return 0;
292 }
293
addCachedPseudoStyle(PassRefPtr<RenderStyle> pseudo)294 RenderStyle* RenderStyle::addCachedPseudoStyle(PassRefPtr<RenderStyle> pseudo)
295 {
296 if (!pseudo)
297 return 0;
298
299 ASSERT(pseudo->styleType() > NOPSEUDO);
300
301 RenderStyle* result = pseudo.get();
302
303 if (!m_cachedPseudoStyles)
304 m_cachedPseudoStyles = adoptPtr(new PseudoStyleCache);
305
306 m_cachedPseudoStyles->append(pseudo);
307
308 return result;
309 }
310
removeCachedPseudoStyle(PseudoId pid)311 void RenderStyle::removeCachedPseudoStyle(PseudoId pid)
312 {
313 if (!m_cachedPseudoStyles)
314 return;
315 for (size_t i = 0; i < m_cachedPseudoStyles->size(); ++i) {
316 RenderStyle* pseudoStyle = m_cachedPseudoStyles->at(i).get();
317 if (pseudoStyle->styleType() == pid) {
318 m_cachedPseudoStyles->remove(i);
319 return;
320 }
321 }
322 }
323
inheritedNotEqual(const RenderStyle * other) const324 bool RenderStyle::inheritedNotEqual(const RenderStyle* other) const
325 {
326 return inherited_flags != other->inherited_flags
327 || inherited != other->inherited
328 || m_svgStyle->inheritedNotEqual(other->m_svgStyle.get())
329 || rareInheritedData != other->rareInheritedData;
330 }
331
inheritedDataShared(const RenderStyle * other) const332 bool RenderStyle::inheritedDataShared(const RenderStyle* other) const
333 {
334 // This is a fast check that only looks if the data structures are shared.
335 return inherited_flags == other->inherited_flags
336 && inherited.get() == other->inherited.get()
337 && m_svgStyle.get() == other->m_svgStyle.get()
338 && rareInheritedData.get() == other->rareInheritedData.get();
339 }
340
positionedObjectMovedOnly(const LengthBox & a,const LengthBox & b,const Length & width)341 static bool positionedObjectMovedOnly(const LengthBox& a, const LengthBox& b, const Length& width)
342 {
343 // If any unit types are different, then we can't guarantee
344 // that this was just a movement.
345 if (a.left().type() != b.left().type()
346 || a.right().type() != b.right().type()
347 || a.top().type() != b.top().type()
348 || a.bottom().type() != b.bottom().type())
349 return false;
350
351 // Only one unit can be non-auto in the horizontal direction and
352 // in the vertical direction. Otherwise the adjustment of values
353 // is changing the size of the box.
354 if (!a.left().isIntrinsicOrAuto() && !a.right().isIntrinsicOrAuto())
355 return false;
356 if (!a.top().isIntrinsicOrAuto() && !a.bottom().isIntrinsicOrAuto())
357 return false;
358 // If our width is auto and left or right is specified and changed then this
359 // is not just a movement - we need to resize to our container.
360 if (width.isIntrinsicOrAuto()
361 && ((!a.left().isIntrinsicOrAuto() && a.left() != b.left())
362 || (!a.right().isIntrinsicOrAuto() && a.right() != b.right())))
363 return false;
364
365 // One of the units is fixed or percent in both directions and stayed
366 // that way in the new style. Therefore all we are doing is moving.
367 return true;
368 }
369
visualInvalidationDiff(const RenderStyle & other) const370 StyleDifference RenderStyle::visualInvalidationDiff(const RenderStyle& other) const
371 {
372 // Note, we use .get() on each DataRef below because DataRef::operator== will do a deep
373 // compare, which is duplicate work when we're going to compare each property inside
374 // this function anyway.
375
376 StyleDifference diff;
377 if (m_svgStyle.get() != other.m_svgStyle.get())
378 diff = m_svgStyle->diff(other.m_svgStyle.get());
379
380 if ((!diff.needsFullLayout() || !diff.needsPaintInvalidation()) && diffNeedsFullLayoutAndPaintInvalidation(other)) {
381 diff.setNeedsFullLayout();
382 diff.setNeedsPaintInvalidationObject();
383 }
384
385 if (!diff.needsFullLayout() && diffNeedsFullLayout(other))
386 diff.setNeedsFullLayout();
387
388 if (!diff.needsFullLayout() && position() != StaticPosition && surround->offset != other.surround->offset) {
389 // Optimize for the case where a positioned layer is moving but not changing size.
390 if (positionedObjectMovedOnly(surround->offset, other.surround->offset, m_box->width()))
391 diff.setNeedsPositionedMovementLayout();
392 else
393 diff.setNeedsFullLayout();
394 }
395
396 if (diffNeedsPaintInvalidationLayer(other))
397 diff.setNeedsPaintInvalidationLayer();
398 else if (diffNeedsPaintInvalidationObject(other))
399 diff.setNeedsPaintInvalidationObject();
400
401 updatePropertySpecificDifferences(other, diff);
402
403 // Cursors are not checked, since they will be set appropriately in response to mouse events,
404 // so they don't need to cause any paint invalidation or layout.
405
406 // Animations don't need to be checked either. We always set the new style on the RenderObject, so we will get a chance to fire off
407 // the resulting transition properly.
408
409 return diff;
410 }
411
diffNeedsFullLayoutAndPaintInvalidation(const RenderStyle & other) const412 bool RenderStyle::diffNeedsFullLayoutAndPaintInvalidation(const RenderStyle& other) const
413 {
414 // FIXME: Not all cases in this method need both full layout and paint invalidation.
415 // Should move cases into diffNeedsFullLayout() if
416 // - don't need paint invalidation at all;
417 // - or the renderer knows how to exactly invalidate paints caused by the layout change
418 // instead of forced full paint invalidation.
419
420 if (surround.get() != other.surround.get()) {
421 // If our border widths change, then we need to layout. Other changes to borders only necessitate a paint invalidation.
422 if (borderLeftWidth() != other.borderLeftWidth()
423 || borderTopWidth() != other.borderTopWidth()
424 || borderBottomWidth() != other.borderBottomWidth()
425 || borderRightWidth() != other.borderRightWidth())
426 return true;
427 }
428
429 if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) {
430 if (rareNonInheritedData->m_appearance != other.rareNonInheritedData->m_appearance
431 || rareNonInheritedData->marginBeforeCollapse != other.rareNonInheritedData->marginBeforeCollapse
432 || rareNonInheritedData->marginAfterCollapse != other.rareNonInheritedData->marginAfterCollapse
433 || rareNonInheritedData->lineClamp != other.rareNonInheritedData->lineClamp
434 || rareNonInheritedData->textOverflow != other.rareNonInheritedData->textOverflow
435 || rareNonInheritedData->m_wrapFlow != other.rareNonInheritedData->m_wrapFlow
436 || rareNonInheritedData->m_wrapThrough != other.rareNonInheritedData->m_wrapThrough
437 || rareNonInheritedData->m_shapeMargin != other.rareNonInheritedData->m_shapeMargin
438 || rareNonInheritedData->m_order != other.rareNonInheritedData->m_order
439 || rareNonInheritedData->m_justifyContent != other.rareNonInheritedData->m_justifyContent
440 || rareNonInheritedData->m_grid.get() != other.rareNonInheritedData->m_grid.get()
441 || rareNonInheritedData->m_gridItem.get() != other.rareNonInheritedData->m_gridItem.get()
442 || rareNonInheritedData->m_textCombine != other.rareNonInheritedData->m_textCombine
443 || rareNonInheritedData->hasFilters() != other.rareNonInheritedData->hasFilters())
444 return true;
445
446 if (rareNonInheritedData->m_deprecatedFlexibleBox.get() != other.rareNonInheritedData->m_deprecatedFlexibleBox.get()
447 && *rareNonInheritedData->m_deprecatedFlexibleBox.get() != *other.rareNonInheritedData->m_deprecatedFlexibleBox.get())
448 return true;
449
450 if (rareNonInheritedData->m_flexibleBox.get() != other.rareNonInheritedData->m_flexibleBox.get()
451 && *rareNonInheritedData->m_flexibleBox.get() != *other.rareNonInheritedData->m_flexibleBox.get())
452 return true;
453
454 // FIXME: We should add an optimized form of layout that just recomputes visual overflow.
455 if (!rareNonInheritedData->shadowDataEquivalent(*other.rareNonInheritedData.get()))
456 return true;
457
458 if (!rareNonInheritedData->reflectionDataEquivalent(*other.rareNonInheritedData.get()))
459 return true;
460
461 if (rareNonInheritedData->m_multiCol.get() != other.rareNonInheritedData->m_multiCol.get()
462 && *rareNonInheritedData->m_multiCol.get() != *other.rareNonInheritedData->m_multiCol.get())
463 return true;
464
465 // If the counter directives change, trigger a relayout to re-calculate counter values and rebuild the counter node tree.
466 const CounterDirectiveMap* mapA = rareNonInheritedData->m_counterDirectives.get();
467 const CounterDirectiveMap* mapB = other.rareNonInheritedData->m_counterDirectives.get();
468 if (!(mapA == mapB || (mapA && mapB && *mapA == *mapB)))
469 return true;
470
471 // We only need do layout for opacity changes if adding or losing opacity could trigger a change
472 // in us being a stacking context.
473 if (hasAutoZIndex() != other.hasAutoZIndex() && rareNonInheritedData->hasOpacity() != other.rareNonInheritedData->hasOpacity()) {
474 // FIXME: We would like to use SimplifiedLayout here, but we can't quite do that yet.
475 // We need to make sure SimplifiedLayout can operate correctly on RenderInlines (we will need
476 // to add a selfNeedsSimplifiedLayout bit in order to not get confused and taint every line).
477 // In addition we need to solve the floating object issue when layers come and go. Right now
478 // a full layout is necessary to keep floating object lists sane.
479 return true;
480 }
481 }
482
483 if (rareInheritedData.get() != other.rareInheritedData.get()) {
484 if (rareInheritedData->highlight != other.rareInheritedData->highlight
485 || rareInheritedData->indent != other.rareInheritedData->indent
486 || rareInheritedData->m_textAlignLast != other.rareInheritedData->m_textAlignLast
487 || rareInheritedData->m_textIndentLine != other.rareInheritedData->m_textIndentLine
488 || rareInheritedData->m_effectiveZoom != other.rareInheritedData->m_effectiveZoom
489 || rareInheritedData->wordBreak != other.rareInheritedData->wordBreak
490 || rareInheritedData->overflowWrap != other.rareInheritedData->overflowWrap
491 || rareInheritedData->lineBreak != other.rareInheritedData->lineBreak
492 || rareInheritedData->textSecurity != other.rareInheritedData->textSecurity
493 || rareInheritedData->hyphens != other.rareInheritedData->hyphens
494 || rareInheritedData->hyphenationLimitBefore != other.rareInheritedData->hyphenationLimitBefore
495 || rareInheritedData->hyphenationLimitAfter != other.rareInheritedData->hyphenationLimitAfter
496 || rareInheritedData->hyphenationString != other.rareInheritedData->hyphenationString
497 || rareInheritedData->locale != other.rareInheritedData->locale
498 || rareInheritedData->m_rubyPosition != other.rareInheritedData->m_rubyPosition
499 || rareInheritedData->textEmphasisMark != other.rareInheritedData->textEmphasisMark
500 || rareInheritedData->textEmphasisPosition != other.rareInheritedData->textEmphasisPosition
501 || rareInheritedData->textEmphasisCustomMark != other.rareInheritedData->textEmphasisCustomMark
502 || rareInheritedData->m_textJustify != other.rareInheritedData->m_textJustify
503 || rareInheritedData->m_textOrientation != other.rareInheritedData->m_textOrientation
504 || rareInheritedData->m_tabSize != other.rareInheritedData->m_tabSize
505 || rareInheritedData->m_lineBoxContain != other.rareInheritedData->m_lineBoxContain
506 || rareInheritedData->listStyleImage != other.rareInheritedData->listStyleImage
507 || rareInheritedData->textStrokeWidth != other.rareInheritedData->textStrokeWidth)
508 return true;
509
510 if (!rareInheritedData->shadowDataEquivalent(*other.rareInheritedData.get()))
511 return true;
512
513 if (!rareInheritedData->quotesDataEquivalent(*other.rareInheritedData.get()))
514 return true;
515 }
516
517 if (inherited->textAutosizingMultiplier != other.inherited->textAutosizingMultiplier)
518 return true;
519
520 if (inherited.get() != other.inherited.get()) {
521 if (inherited->line_height != other.inherited->line_height
522 || inherited->font != other.inherited->font
523 || inherited->horizontal_border_spacing != other.inherited->horizontal_border_spacing
524 || inherited->vertical_border_spacing != other.inherited->vertical_border_spacing)
525 return true;
526 }
527
528 if (inherited_flags._box_direction != other.inherited_flags._box_direction
529 || inherited_flags.m_rtlOrdering != other.inherited_flags.m_rtlOrdering
530 || inherited_flags._text_align != other.inherited_flags._text_align
531 || inherited_flags._text_transform != other.inherited_flags._text_transform
532 || inherited_flags._direction != other.inherited_flags._direction
533 || inherited_flags._white_space != other.inherited_flags._white_space
534 || inherited_flags.m_writingMode != other.inherited_flags.m_writingMode)
535 return true;
536
537 if (noninherited_flags.overflowX != other.noninherited_flags.overflowX
538 || noninherited_flags.overflowY != other.noninherited_flags.overflowY
539 || noninherited_flags.clear != other.noninherited_flags.clear
540 || noninherited_flags.unicodeBidi != other.noninherited_flags.unicodeBidi
541 || noninherited_flags.floating != other.noninherited_flags.floating
542 || noninherited_flags.originalDisplay != other.noninherited_flags.originalDisplay)
543 return true;
544
545 if (noninherited_flags.effectiveDisplay >= FIRST_TABLE_DISPLAY && noninherited_flags.effectiveDisplay <= LAST_TABLE_DISPLAY) {
546 if (inherited_flags._border_collapse != other.inherited_flags._border_collapse
547 || inherited_flags._empty_cells != other.inherited_flags._empty_cells
548 || inherited_flags._caption_side != other.inherited_flags._caption_side
549 || noninherited_flags.tableLayout != other.noninherited_flags.tableLayout)
550 return true;
551
552 // In the collapsing border model, 'hidden' suppresses other borders, while 'none'
553 // does not, so these style differences can be width differences.
554 if (inherited_flags._border_collapse
555 && ((borderTopStyle() == BHIDDEN && other.borderTopStyle() == BNONE)
556 || (borderTopStyle() == BNONE && other.borderTopStyle() == BHIDDEN)
557 || (borderBottomStyle() == BHIDDEN && other.borderBottomStyle() == BNONE)
558 || (borderBottomStyle() == BNONE && other.borderBottomStyle() == BHIDDEN)
559 || (borderLeftStyle() == BHIDDEN && other.borderLeftStyle() == BNONE)
560 || (borderLeftStyle() == BNONE && other.borderLeftStyle() == BHIDDEN)
561 || (borderRightStyle() == BHIDDEN && other.borderRightStyle() == BNONE)
562 || (borderRightStyle() == BNONE && other.borderRightStyle() == BHIDDEN)))
563 return true;
564 } else if (noninherited_flags.effectiveDisplay == LIST_ITEM) {
565 if (inherited_flags._list_style_type != other.inherited_flags._list_style_type
566 || inherited_flags._list_style_position != other.inherited_flags._list_style_position)
567 return true;
568 }
569
570 if ((visibility() == COLLAPSE) != (other.visibility() == COLLAPSE))
571 return true;
572
573 if (!m_background->outline().visuallyEqual(other.m_background->outline())) {
574 // FIXME: We only really need to recompute the overflow but we don't have an optimized layout for it.
575 return true;
576 }
577
578 // Movement of non-static-positioned object is special cased in RenderStyle::visualInvalidationDiff().
579
580 return false;
581 }
582
diffNeedsFullLayout(const RenderStyle & other) const583 bool RenderStyle::diffNeedsFullLayout(const RenderStyle& other) const
584 {
585 if (m_box.get() != other.m_box.get()) {
586 if (m_box->width() != other.m_box->width()
587 || m_box->minWidth() != other.m_box->minWidth()
588 || m_box->maxWidth() != other.m_box->maxWidth()
589 || m_box->height() != other.m_box->height()
590 || m_box->minHeight() != other.m_box->minHeight()
591 || m_box->maxHeight() != other.m_box->maxHeight())
592 return true;
593
594 if (m_box->verticalAlign() != other.m_box->verticalAlign())
595 return true;
596
597 if (m_box->boxSizing() != other.m_box->boxSizing())
598 return true;
599 }
600
601 if (noninherited_flags.verticalAlign != other.noninherited_flags.verticalAlign
602 || noninherited_flags.position != other.noninherited_flags.position)
603 return true;
604
605 if (surround.get() != other.surround.get()) {
606 if (surround->margin != other.surround->margin)
607 return true;
608
609 if (surround->padding != other.surround->padding)
610 return true;
611 }
612
613 if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) {
614 if (rareNonInheritedData->m_alignContent != other.rareNonInheritedData->m_alignContent
615 || rareNonInheritedData->m_alignItems != other.rareNonInheritedData->m_alignItems
616 || rareNonInheritedData->m_alignSelf != other.rareNonInheritedData->m_alignSelf)
617 return true;
618 }
619
620 return false;
621 }
622
diffNeedsPaintInvalidationLayer(const RenderStyle & other) const623 bool RenderStyle::diffNeedsPaintInvalidationLayer(const RenderStyle& other) const
624 {
625 if (position() != StaticPosition && (visual->clip != other.visual->clip || visual->hasAutoClip != other.visual->hasAutoClip))
626 return true;
627
628 if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) {
629 if (RuntimeEnabledFeatures::cssCompositingEnabled()
630 && (rareNonInheritedData->m_effectiveBlendMode != other.rareNonInheritedData->m_effectiveBlendMode
631 || rareNonInheritedData->m_isolation != other.rareNonInheritedData->m_isolation))
632 return true;
633
634 if (rareNonInheritedData->m_mask != other.rareNonInheritedData->m_mask
635 || rareNonInheritedData->m_maskBoxImage != other.rareNonInheritedData->m_maskBoxImage)
636 return true;
637 }
638
639 return false;
640 }
641
diffNeedsPaintInvalidationObject(const RenderStyle & other) const642 bool RenderStyle::diffNeedsPaintInvalidationObject(const RenderStyle& other) const
643 {
644 if (inherited_flags._visibility != other.inherited_flags._visibility
645 || inherited_flags.m_printColorAdjust != other.inherited_flags.m_printColorAdjust
646 || inherited_flags._insideLink != other.inherited_flags._insideLink
647 || !surround->border.visuallyEqual(other.surround->border)
648 || !m_background->visuallyEqual(*other.m_background))
649 return true;
650
651 if (rareInheritedData.get() != other.rareInheritedData.get()) {
652 if (rareInheritedData->userModify != other.rareInheritedData->userModify
653 || rareInheritedData->userSelect != other.rareInheritedData->userSelect
654 || rareInheritedData->m_imageRendering != other.rareInheritedData->m_imageRendering)
655 return true;
656 }
657
658 if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) {
659 if (rareNonInheritedData->userDrag != other.rareNonInheritedData->userDrag
660 || rareNonInheritedData->m_borderFit != other.rareNonInheritedData->m_borderFit
661 || rareNonInheritedData->m_objectFit != other.rareNonInheritedData->m_objectFit
662 || rareNonInheritedData->m_objectPosition != other.rareNonInheritedData->m_objectPosition
663 || !dataEquivalent(rareNonInheritedData->m_shapeOutside, other.rareNonInheritedData->m_shapeOutside)
664 || !dataEquivalent(rareNonInheritedData->m_clipPath, other.rareNonInheritedData->m_clipPath))
665 return true;
666 }
667
668 return false;
669 }
670
updatePropertySpecificDifferences(const RenderStyle & other,StyleDifference & diff) const671 void RenderStyle::updatePropertySpecificDifferences(const RenderStyle& other, StyleDifference& diff) const
672 {
673 // StyleAdjuster has ensured that zIndex is non-auto only if it's applicable.
674 if (m_box->zIndex() != other.m_box->zIndex() || m_box->hasAutoZIndex() != other.m_box->hasAutoZIndex())
675 diff.setZIndexChanged();
676
677 if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) {
678 if (!transformDataEquivalent(other))
679 diff.setTransformChanged();
680
681 if (rareNonInheritedData->opacity != other.rareNonInheritedData->opacity)
682 diff.setOpacityChanged();
683
684 if (rareNonInheritedData->m_filter != other.rareNonInheritedData->m_filter)
685 diff.setFilterChanged();
686 }
687
688 if (!diff.needsPaintInvalidation()) {
689 if (inherited->color != other.inherited->color
690 || inherited_flags.m_textUnderline != other.inherited_flags.m_textUnderline
691 || visual->textDecoration != other.visual->textDecoration) {
692 diff.setTextOrColorChanged();
693 } else if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) {
694 if (rareNonInheritedData->m_textDecorationStyle != other.rareNonInheritedData->m_textDecorationStyle
695 || rareNonInheritedData->m_textDecorationColor != other.rareNonInheritedData->m_textDecorationColor)
696 diff.setTextOrColorChanged();
697 } else if (rareInheritedData.get() != other.rareInheritedData.get()) {
698 if (rareInheritedData->textFillColor() != other.rareInheritedData->textFillColor()
699 || rareInheritedData->textStrokeColor() != other.rareInheritedData->textStrokeColor()
700 || rareInheritedData->textEmphasisColor() != other.rareInheritedData->textEmphasisColor()
701 || rareInheritedData->textEmphasisFill != other.rareInheritedData->textEmphasisFill
702 || rareInheritedData->appliedTextDecorations != other.rareInheritedData->appliedTextDecorations)
703 diff.setTextOrColorChanged();
704 }
705 }
706 }
707
addCursor(PassRefPtr<StyleImage> image,const IntPoint & hotSpot)708 void RenderStyle::addCursor(PassRefPtr<StyleImage> image, const IntPoint& hotSpot)
709 {
710 if (!rareInheritedData.access()->cursorData)
711 rareInheritedData.access()->cursorData = CursorList::create();
712 rareInheritedData.access()->cursorData->append(CursorData(image, hotSpot));
713 }
714
setCursorList(PassRefPtr<CursorList> other)715 void RenderStyle::setCursorList(PassRefPtr<CursorList> other)
716 {
717 rareInheritedData.access()->cursorData = other;
718 }
719
setQuotes(PassRefPtr<QuotesData> q)720 void RenderStyle::setQuotes(PassRefPtr<QuotesData> q)
721 {
722 rareInheritedData.access()->quotes = q;
723 }
724
clearCursorList()725 void RenderStyle::clearCursorList()
726 {
727 if (rareInheritedData->cursorData)
728 rareInheritedData.access()->cursorData = nullptr;
729 }
730
addCallbackSelector(const String & selector)731 void RenderStyle::addCallbackSelector(const String& selector)
732 {
733 if (!rareNonInheritedData->m_callbackSelectors.contains(selector))
734 rareNonInheritedData.access()->m_callbackSelectors.append(selector);
735 }
736
clearContent()737 void RenderStyle::clearContent()
738 {
739 if (rareNonInheritedData->m_content)
740 rareNonInheritedData.access()->m_content = nullptr;
741 }
742
appendContent(PassOwnPtr<ContentData> contentData)743 void RenderStyle::appendContent(PassOwnPtr<ContentData> contentData)
744 {
745 OwnPtr<ContentData>& content = rareNonInheritedData.access()->m_content;
746 ContentData* lastContent = content.get();
747 while (lastContent && lastContent->next())
748 lastContent = lastContent->next();
749
750 if (lastContent)
751 lastContent->setNext(contentData);
752 else
753 content = contentData;
754 }
755
setContent(PassRefPtr<StyleImage> image,bool add)756 void RenderStyle::setContent(PassRefPtr<StyleImage> image, bool add)
757 {
758 if (!image)
759 return;
760
761 if (add) {
762 appendContent(ContentData::create(image));
763 return;
764 }
765
766 rareNonInheritedData.access()->m_content = ContentData::create(image);
767 }
768
setContent(const String & string,bool add)769 void RenderStyle::setContent(const String& string, bool add)
770 {
771 OwnPtr<ContentData>& content = rareNonInheritedData.access()->m_content;
772 if (add) {
773 ContentData* lastContent = content.get();
774 while (lastContent && lastContent->next())
775 lastContent = lastContent->next();
776
777 if (lastContent) {
778 // We attempt to merge with the last ContentData if possible.
779 if (lastContent->isText()) {
780 TextContentData* textContent = toTextContentData(lastContent);
781 textContent->setText(textContent->text() + string);
782 } else
783 lastContent->setNext(ContentData::create(string));
784
785 return;
786 }
787 }
788
789 content = ContentData::create(string);
790 }
791
setContent(PassOwnPtr<CounterContent> counter,bool add)792 void RenderStyle::setContent(PassOwnPtr<CounterContent> counter, bool add)
793 {
794 if (!counter)
795 return;
796
797 if (add) {
798 appendContent(ContentData::create(counter));
799 return;
800 }
801
802 rareNonInheritedData.access()->m_content = ContentData::create(counter);
803 }
804
setContent(QuoteType quote,bool add)805 void RenderStyle::setContent(QuoteType quote, bool add)
806 {
807 if (add) {
808 appendContent(ContentData::create(quote));
809 return;
810 }
811
812 rareNonInheritedData.access()->m_content = ContentData::create(quote);
813 }
814
blendMode() const815 WebBlendMode RenderStyle::blendMode() const
816 {
817 if (RuntimeEnabledFeatures::cssCompositingEnabled())
818 return static_cast<WebBlendMode>(rareNonInheritedData->m_effectiveBlendMode);
819 return WebBlendModeNormal;
820 }
821
setBlendMode(WebBlendMode v)822 void RenderStyle::setBlendMode(WebBlendMode v)
823 {
824 if (RuntimeEnabledFeatures::cssCompositingEnabled())
825 rareNonInheritedData.access()->m_effectiveBlendMode = v;
826 }
827
hasBlendMode() const828 bool RenderStyle::hasBlendMode() const
829 {
830 if (RuntimeEnabledFeatures::cssCompositingEnabled())
831 return static_cast<WebBlendMode>(rareNonInheritedData->m_effectiveBlendMode) != WebBlendModeNormal;
832 return false;
833 }
834
isolation() const835 EIsolation RenderStyle::isolation() const
836 {
837 if (RuntimeEnabledFeatures::cssCompositingEnabled())
838 return static_cast<EIsolation>(rareNonInheritedData->m_isolation);
839 return IsolationAuto;
840 }
841
setIsolation(EIsolation v)842 void RenderStyle::setIsolation(EIsolation v)
843 {
844 if (RuntimeEnabledFeatures::cssCompositingEnabled())
845 rareNonInheritedData.access()->m_isolation = v;
846 }
847
hasIsolation() const848 bool RenderStyle::hasIsolation() const
849 {
850 if (RuntimeEnabledFeatures::cssCompositingEnabled())
851 return rareNonInheritedData->m_isolation != IsolationAuto;
852 return false;
853 }
854
hasWillChangeCompositingHint() const855 bool RenderStyle::hasWillChangeCompositingHint() const
856 {
857 for (size_t i = 0; i < rareNonInheritedData->m_willChange->m_properties.size(); ++i) {
858 switch (rareNonInheritedData->m_willChange->m_properties[i]) {
859 case CSSPropertyOpacity:
860 case CSSPropertyTransform:
861 case CSSPropertyWebkitTransform:
862 case CSSPropertyTop:
863 case CSSPropertyLeft:
864 case CSSPropertyBottom:
865 case CSSPropertyRight:
866 return true;
867 default:
868 break;
869 }
870 }
871 return false;
872 }
873
requireTransformOrigin(const Vector<RefPtr<TransformOperation>> & transformOperations,RenderStyle::ApplyTransformOrigin applyOrigin)874 inline bool requireTransformOrigin(const Vector<RefPtr<TransformOperation> >& transformOperations, RenderStyle::ApplyTransformOrigin applyOrigin)
875 {
876 // transform-origin brackets the transform with translate operations.
877 // Optimize for the case where the only transform is a translation, since the transform-origin is irrelevant
878 // in that case.
879 if (applyOrigin != RenderStyle::IncludeTransformOrigin)
880 return false;
881
882 unsigned size = transformOperations.size();
883 for (unsigned i = 0; i < size; ++i) {
884 TransformOperation::OperationType type = transformOperations[i]->type();
885 if (type != TransformOperation::TranslateX
886 && type != TransformOperation::TranslateY
887 && type != TransformOperation::Translate
888 && type != TransformOperation::TranslateZ
889 && type != TransformOperation::Translate3D)
890 return true;
891 }
892
893 return false;
894 }
895
applyTransform(TransformationMatrix & transform,const LayoutSize & borderBoxSize,ApplyTransformOrigin applyOrigin) const896 void RenderStyle::applyTransform(TransformationMatrix& transform, const LayoutSize& borderBoxSize, ApplyTransformOrigin applyOrigin) const
897 {
898 applyTransform(transform, FloatRect(FloatPoint(), borderBoxSize), applyOrigin);
899 }
900
applyTransform(TransformationMatrix & transform,const FloatRect & boundingBox,ApplyTransformOrigin applyOrigin) const901 void RenderStyle::applyTransform(TransformationMatrix& transform, const FloatRect& boundingBox, ApplyTransformOrigin applyOrigin) const
902 {
903 const Vector<RefPtr<TransformOperation> >& transformOperations = rareNonInheritedData->m_transform->m_operations.operations();
904 bool applyTransformOrigin = requireTransformOrigin(transformOperations, applyOrigin);
905
906 float offsetX = transformOriginX().type() == Percent ? boundingBox.x() : 0;
907 float offsetY = transformOriginY().type() == Percent ? boundingBox.y() : 0;
908
909 if (applyTransformOrigin) {
910 transform.translate3d(floatValueForLength(transformOriginX(), boundingBox.width()) + offsetX,
911 floatValueForLength(transformOriginY(), boundingBox.height()) + offsetY,
912 transformOriginZ());
913 }
914
915 unsigned size = transformOperations.size();
916 for (unsigned i = 0; i < size; ++i)
917 transformOperations[i]->apply(transform, boundingBox.size());
918
919 if (applyTransformOrigin) {
920 transform.translate3d(-floatValueForLength(transformOriginX(), boundingBox.width()) - offsetX,
921 -floatValueForLength(transformOriginY(), boundingBox.height()) - offsetY,
922 -transformOriginZ());
923 }
924 }
925
setTextShadow(PassRefPtr<ShadowList> s)926 void RenderStyle::setTextShadow(PassRefPtr<ShadowList> s)
927 {
928 rareInheritedData.access()->textShadow = s;
929 }
930
setBoxShadow(PassRefPtr<ShadowList> s)931 void RenderStyle::setBoxShadow(PassRefPtr<ShadowList> s)
932 {
933 rareNonInheritedData.access()->m_boxShadow = s;
934 }
935
calcRadiiFor(const BorderData & border,IntSize size)936 static RoundedRect::Radii calcRadiiFor(const BorderData& border, IntSize size)
937 {
938 return RoundedRect::Radii(
939 IntSize(valueForLength(border.topLeft().width(), size.width()),
940 valueForLength(border.topLeft().height(), size.height())),
941 IntSize(valueForLength(border.topRight().width(), size.width()),
942 valueForLength(border.topRight().height(), size.height())),
943 IntSize(valueForLength(border.bottomLeft().width(), size.width()),
944 valueForLength(border.bottomLeft().height(), size.height())),
945 IntSize(valueForLength(border.bottomRight().width(), size.width()),
946 valueForLength(border.bottomRight().height(), size.height())));
947 }
948
listStyleImage() const949 StyleImage* RenderStyle::listStyleImage() const { return rareInheritedData->listStyleImage.get(); }
setListStyleImage(PassRefPtr<StyleImage> v)950 void RenderStyle::setListStyleImage(PassRefPtr<StyleImage> v)
951 {
952 if (rareInheritedData->listStyleImage != v)
953 rareInheritedData.access()->listStyleImage = v;
954 }
955
color() const956 Color RenderStyle::color() const { return inherited->color; }
visitedLinkColor() const957 Color RenderStyle::visitedLinkColor() const { return inherited->visitedLinkColor; }
setColor(const Color & v)958 void RenderStyle::setColor(const Color& v) { SET_VAR(inherited, color, v); }
setVisitedLinkColor(const Color & v)959 void RenderStyle::setVisitedLinkColor(const Color& v) { SET_VAR(inherited, visitedLinkColor, v); }
960
horizontalBorderSpacing() const961 short RenderStyle::horizontalBorderSpacing() const { return inherited->horizontal_border_spacing; }
verticalBorderSpacing() const962 short RenderStyle::verticalBorderSpacing() const { return inherited->vertical_border_spacing; }
setHorizontalBorderSpacing(short v)963 void RenderStyle::setHorizontalBorderSpacing(short v) { SET_VAR(inherited, horizontal_border_spacing, v); }
setVerticalBorderSpacing(short v)964 void RenderStyle::setVerticalBorderSpacing(short v) { SET_VAR(inherited, vertical_border_spacing, v); }
965
getRoundedBorderFor(const LayoutRect & borderRect,bool includeLogicalLeftEdge,bool includeLogicalRightEdge) const966 RoundedRect RenderStyle::getRoundedBorderFor(const LayoutRect& borderRect, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
967 {
968 IntRect snappedBorderRect(pixelSnappedIntRect(borderRect));
969 RoundedRect roundedRect(snappedBorderRect);
970 if (hasBorderRadius()) {
971 RoundedRect::Radii radii = calcRadiiFor(surround->border, snappedBorderRect.size());
972 radii.scale(calcBorderRadiiConstraintScaleFor(borderRect, radii));
973 roundedRect.includeLogicalEdges(radii, isHorizontalWritingMode(), includeLogicalLeftEdge, includeLogicalRightEdge);
974 }
975 return roundedRect;
976 }
977
getRoundedInnerBorderFor(const LayoutRect & borderRect,bool includeLogicalLeftEdge,bool includeLogicalRightEdge) const978 RoundedRect RenderStyle::getRoundedInnerBorderFor(const LayoutRect& borderRect, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
979 {
980 bool horizontal = isHorizontalWritingMode();
981
982 int leftWidth = (!horizontal || includeLogicalLeftEdge) ? borderLeftWidth() : 0;
983 int rightWidth = (!horizontal || includeLogicalRightEdge) ? borderRightWidth() : 0;
984 int topWidth = (horizontal || includeLogicalLeftEdge) ? borderTopWidth() : 0;
985 int bottomWidth = (horizontal || includeLogicalRightEdge) ? borderBottomWidth() : 0;
986
987 return getRoundedInnerBorderFor(borderRect, topWidth, bottomWidth, leftWidth, rightWidth, includeLogicalLeftEdge, includeLogicalRightEdge);
988 }
989
getRoundedInnerBorderFor(const LayoutRect & borderRect,int topWidth,int bottomWidth,int leftWidth,int rightWidth,bool includeLogicalLeftEdge,bool includeLogicalRightEdge) const990 RoundedRect RenderStyle::getRoundedInnerBorderFor(const LayoutRect& borderRect,
991 int topWidth, int bottomWidth, int leftWidth, int rightWidth, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
992 {
993 LayoutRect innerRect(borderRect.x() + leftWidth,
994 borderRect.y() + topWidth,
995 borderRect.width() - leftWidth - rightWidth,
996 borderRect.height() - topWidth - bottomWidth);
997
998 RoundedRect roundedRect(pixelSnappedIntRect(innerRect));
999
1000 if (hasBorderRadius()) {
1001 RoundedRect::Radii radii = getRoundedBorderFor(borderRect).radii();
1002 radii.shrink(topWidth, bottomWidth, leftWidth, rightWidth);
1003 roundedRect.includeLogicalEdges(radii, isHorizontalWritingMode(), includeLogicalLeftEdge, includeLogicalRightEdge);
1004 }
1005 return roundedRect;
1006 }
1007
allLayersAreFixed(const FillLayer & layer)1008 static bool allLayersAreFixed(const FillLayer& layer)
1009 {
1010 for (const FillLayer* currLayer = &layer; currLayer; currLayer = currLayer->next()) {
1011 if (!currLayer->image() || currLayer->attachment() != FixedBackgroundAttachment)
1012 return false;
1013 }
1014
1015 return true;
1016 }
1017
hasEntirelyFixedBackground() const1018 bool RenderStyle::hasEntirelyFixedBackground() const
1019 {
1020 return allLayersAreFixed(backgroundLayers());
1021 }
1022
counterDirectives() const1023 const CounterDirectiveMap* RenderStyle::counterDirectives() const
1024 {
1025 return rareNonInheritedData->m_counterDirectives.get();
1026 }
1027
accessCounterDirectives()1028 CounterDirectiveMap& RenderStyle::accessCounterDirectives()
1029 {
1030 OwnPtr<CounterDirectiveMap>& map = rareNonInheritedData.access()->m_counterDirectives;
1031 if (!map)
1032 map = adoptPtr(new CounterDirectiveMap);
1033 return *map;
1034 }
1035
getCounterDirectives(const AtomicString & identifier) const1036 const CounterDirectives RenderStyle::getCounterDirectives(const AtomicString& identifier) const
1037 {
1038 if (const CounterDirectiveMap* directives = counterDirectives())
1039 return directives->get(identifier);
1040 return CounterDirectives();
1041 }
1042
hyphenString() const1043 const AtomicString& RenderStyle::hyphenString() const
1044 {
1045 const AtomicString& hyphenationString = rareInheritedData.get()->hyphenationString;
1046 if (!hyphenationString.isNull())
1047 return hyphenationString;
1048
1049 // FIXME: This should depend on locale.
1050 DEFINE_STATIC_LOCAL(AtomicString, hyphenMinusString, (&hyphenMinus, 1));
1051 DEFINE_STATIC_LOCAL(AtomicString, hyphenString, (&hyphen, 1));
1052 return font().primaryFontHasGlyphForCharacter(hyphen) ? hyphenString : hyphenMinusString;
1053 }
1054
textEmphasisMarkString() const1055 const AtomicString& RenderStyle::textEmphasisMarkString() const
1056 {
1057 switch (textEmphasisMark()) {
1058 case TextEmphasisMarkNone:
1059 return nullAtom;
1060 case TextEmphasisMarkCustom:
1061 return textEmphasisCustomMark();
1062 case TextEmphasisMarkDot: {
1063 DEFINE_STATIC_LOCAL(AtomicString, filledDotString, (&bullet, 1));
1064 DEFINE_STATIC_LOCAL(AtomicString, openDotString, (&whiteBullet, 1));
1065 return textEmphasisFill() == TextEmphasisFillFilled ? filledDotString : openDotString;
1066 }
1067 case TextEmphasisMarkCircle: {
1068 DEFINE_STATIC_LOCAL(AtomicString, filledCircleString, (&blackCircle, 1));
1069 DEFINE_STATIC_LOCAL(AtomicString, openCircleString, (&whiteCircle, 1));
1070 return textEmphasisFill() == TextEmphasisFillFilled ? filledCircleString : openCircleString;
1071 }
1072 case TextEmphasisMarkDoubleCircle: {
1073 DEFINE_STATIC_LOCAL(AtomicString, filledDoubleCircleString, (&fisheye, 1));
1074 DEFINE_STATIC_LOCAL(AtomicString, openDoubleCircleString, (&bullseye, 1));
1075 return textEmphasisFill() == TextEmphasisFillFilled ? filledDoubleCircleString : openDoubleCircleString;
1076 }
1077 case TextEmphasisMarkTriangle: {
1078 DEFINE_STATIC_LOCAL(AtomicString, filledTriangleString, (&blackUpPointingTriangle, 1));
1079 DEFINE_STATIC_LOCAL(AtomicString, openTriangleString, (&whiteUpPointingTriangle, 1));
1080 return textEmphasisFill() == TextEmphasisFillFilled ? filledTriangleString : openTriangleString;
1081 }
1082 case TextEmphasisMarkSesame: {
1083 DEFINE_STATIC_LOCAL(AtomicString, filledSesameString, (&sesameDot, 1));
1084 DEFINE_STATIC_LOCAL(AtomicString, openSesameString, (&whiteSesameDot, 1));
1085 return textEmphasisFill() == TextEmphasisFillFilled ? filledSesameString : openSesameString;
1086 }
1087 case TextEmphasisMarkAuto:
1088 ASSERT_NOT_REACHED();
1089 return nullAtom;
1090 }
1091
1092 ASSERT_NOT_REACHED();
1093 return nullAtom;
1094 }
1095
accessAnimations()1096 CSSAnimationData& RenderStyle::accessAnimations()
1097 {
1098 if (!rareNonInheritedData.access()->m_animations)
1099 rareNonInheritedData.access()->m_animations = CSSAnimationData::create();
1100 return *rareNonInheritedData->m_animations;
1101 }
1102
accessTransitions()1103 CSSTransitionData& RenderStyle::accessTransitions()
1104 {
1105 if (!rareNonInheritedData.access()->m_transitions)
1106 rareNonInheritedData.access()->m_transitions = CSSTransitionData::create();
1107 return *rareNonInheritedData->m_transitions;
1108 }
1109
font() const1110 const Font& RenderStyle::font() const { return inherited->font; }
fontMetrics() const1111 const FontMetrics& RenderStyle::fontMetrics() const { return inherited->font.fontMetrics(); }
fontDescription() const1112 const FontDescription& RenderStyle::fontDescription() const { return inherited->font.fontDescription(); }
specifiedFontSize() const1113 float RenderStyle::specifiedFontSize() const { return fontDescription().specifiedSize(); }
computedFontSize() const1114 float RenderStyle::computedFontSize() const { return fontDescription().computedSize(); }
fontSize() const1115 int RenderStyle::fontSize() const { return fontDescription().computedPixelSize(); }
fontWeight() const1116 FontWeight RenderStyle::fontWeight() const { return fontDescription().weight(); }
fontStretch() const1117 FontStretch RenderStyle::fontStretch() const { return fontDescription().stretch(); }
1118
textDecorationsInEffect() const1119 TextDecoration RenderStyle::textDecorationsInEffect() const
1120 {
1121 int decorations = 0;
1122
1123 const Vector<AppliedTextDecoration>& applied = appliedTextDecorations();
1124
1125 for (size_t i = 0; i < applied.size(); ++i)
1126 decorations |= applied[i].line();
1127
1128 return static_cast<TextDecoration>(decorations);
1129 }
1130
appliedTextDecorations() const1131 const Vector<AppliedTextDecoration>& RenderStyle::appliedTextDecorations() const
1132 {
1133 if (!inherited_flags.m_textUnderline && !rareInheritedData->appliedTextDecorations) {
1134 DEFINE_STATIC_LOCAL(Vector<AppliedTextDecoration>, empty, ());
1135 return empty;
1136 }
1137 if (inherited_flags.m_textUnderline) {
1138 DEFINE_STATIC_LOCAL(Vector<AppliedTextDecoration>, underline, (1, AppliedTextDecoration(TextDecorationUnderline)));
1139 return underline;
1140 }
1141
1142 return rareInheritedData->appliedTextDecorations->vector();
1143 }
1144
wordSpacing() const1145 float RenderStyle::wordSpacing() const { return fontDescription().wordSpacing(); }
letterSpacing() const1146 float RenderStyle::letterSpacing() const { return fontDescription().letterSpacing(); }
1147
setFontDescription(const FontDescription & v)1148 bool RenderStyle::setFontDescription(const FontDescription& v)
1149 {
1150 if (inherited->font.fontDescription() != v) {
1151 inherited.access()->font = Font(v);
1152 return true;
1153 }
1154 return false;
1155 }
1156
specifiedLineHeight() const1157 const Length& RenderStyle::specifiedLineHeight() const { return inherited->line_height; }
lineHeight() const1158 Length RenderStyle::lineHeight() const
1159 {
1160 const Length& lh = inherited->line_height;
1161 // Unlike fontDescription().computedSize() and hence fontSize(), this is
1162 // recalculated on demand as we only store the specified line height.
1163 // FIXME: Should consider scaling the fixed part of any calc expressions
1164 // too, though this involves messily poking into CalcExpressionLength.
1165 float multiplier = textAutosizingMultiplier();
1166 if (multiplier > 1 && lh.isFixed())
1167 return Length(TextAutosizer::computeAutosizedFontSize(lh.value(), multiplier), Fixed);
1168
1169 return lh;
1170 }
1171
setLineHeight(const Length & specifiedLineHeight)1172 void RenderStyle::setLineHeight(const Length& specifiedLineHeight) { SET_VAR(inherited, line_height, specifiedLineHeight); }
1173
computedLineHeight() const1174 int RenderStyle::computedLineHeight() const
1175 {
1176 const Length& lh = lineHeight();
1177
1178 // Negative value means the line height is not set. Use the font's built-in spacing.
1179 if (lh.isNegative())
1180 return fontMetrics().lineSpacing();
1181
1182 if (lh.isPercent())
1183 return minimumValueForLength(lh, fontSize());
1184
1185 return lh.value();
1186 }
1187
setWordSpacing(float wordSpacing)1188 void RenderStyle::setWordSpacing(float wordSpacing)
1189 {
1190 FontSelector* currentFontSelector = font().fontSelector();
1191 FontDescription desc(fontDescription());
1192 desc.setWordSpacing(wordSpacing);
1193 setFontDescription(desc);
1194 font().update(currentFontSelector);
1195 }
1196
setLetterSpacing(float letterSpacing)1197 void RenderStyle::setLetterSpacing(float letterSpacing)
1198 {
1199 FontSelector* currentFontSelector = font().fontSelector();
1200 FontDescription desc(fontDescription());
1201 desc.setLetterSpacing(letterSpacing);
1202 setFontDescription(desc);
1203 font().update(currentFontSelector);
1204 }
1205
setFontSize(float size)1206 void RenderStyle::setFontSize(float size)
1207 {
1208 // size must be specifiedSize if Text Autosizing is enabled, but computedSize if text
1209 // zoom is enabled (if neither is enabled it's irrelevant as they're probably the same).
1210
1211 ASSERT(std::isfinite(size));
1212 if (!std::isfinite(size) || size < 0)
1213 size = 0;
1214 else
1215 size = std::min(maximumAllowedFontSize, size);
1216
1217 FontSelector* currentFontSelector = font().fontSelector();
1218 FontDescription desc(fontDescription());
1219 desc.setSpecifiedSize(size);
1220 desc.setComputedSize(size);
1221
1222 float multiplier = textAutosizingMultiplier();
1223 if (multiplier > 1) {
1224 float autosizedFontSize = TextAutosizer::computeAutosizedFontSize(size, multiplier);
1225 desc.setComputedSize(std::min(maximumAllowedFontSize, autosizedFontSize));
1226 }
1227
1228 setFontDescription(desc);
1229 font().update(currentFontSelector);
1230 }
1231
setFontWeight(FontWeight weight)1232 void RenderStyle::setFontWeight(FontWeight weight)
1233 {
1234 FontSelector* currentFontSelector = font().fontSelector();
1235 FontDescription desc(fontDescription());
1236 desc.setWeight(weight);
1237 setFontDescription(desc);
1238 font().update(currentFontSelector);
1239 }
1240
addAppliedTextDecoration(const AppliedTextDecoration & decoration)1241 void RenderStyle::addAppliedTextDecoration(const AppliedTextDecoration& decoration)
1242 {
1243 RefPtr<AppliedTextDecorationList>& list = rareInheritedData.access()->appliedTextDecorations;
1244
1245 if (!list)
1246 list = AppliedTextDecorationList::create();
1247 else if (!list->hasOneRef())
1248 list = list->copy();
1249
1250 if (inherited_flags.m_textUnderline) {
1251 inherited_flags.m_textUnderline = false;
1252 list->append(AppliedTextDecoration(TextDecorationUnderline));
1253 }
1254
1255 list->append(decoration);
1256 }
1257
applyTextDecorations()1258 void RenderStyle::applyTextDecorations()
1259 {
1260 if (textDecoration() == TextDecorationNone)
1261 return;
1262
1263 TextDecorationStyle style = textDecorationStyle();
1264 StyleColor styleColor = visitedDependentDecorationStyleColor();
1265
1266 int decorations = textDecoration();
1267
1268 if (decorations & TextDecorationUnderline) {
1269 // To save memory, we don't use AppliedTextDecoration objects in the
1270 // common case of a single simple underline.
1271 AppliedTextDecoration underline(TextDecorationUnderline, style, styleColor);
1272
1273 if (!rareInheritedData->appliedTextDecorations && underline.isSimpleUnderline())
1274 inherited_flags.m_textUnderline = true;
1275 else
1276 addAppliedTextDecoration(underline);
1277 }
1278 if (decorations & TextDecorationOverline)
1279 addAppliedTextDecoration(AppliedTextDecoration(TextDecorationOverline, style, styleColor));
1280 if (decorations & TextDecorationLineThrough)
1281 addAppliedTextDecoration(AppliedTextDecoration(TextDecorationLineThrough, style, styleColor));
1282 }
1283
clearAppliedTextDecorations()1284 void RenderStyle::clearAppliedTextDecorations()
1285 {
1286 inherited_flags.m_textUnderline = false;
1287
1288 if (rareInheritedData->appliedTextDecorations)
1289 rareInheritedData.access()->appliedTextDecorations = nullptr;
1290 }
1291
setFontStretch(FontStretch stretch)1292 void RenderStyle::setFontStretch(FontStretch stretch)
1293 {
1294 FontSelector* currentFontSelector = font().fontSelector();
1295 FontDescription desc(fontDescription());
1296 desc.setStretch(stretch);
1297 setFontDescription(desc);
1298 font().update(currentFontSelector);
1299 }
1300
getShadowExtent(const ShadowList * shadowList,LayoutUnit & top,LayoutUnit & right,LayoutUnit & bottom,LayoutUnit & left) const1301 void RenderStyle::getShadowExtent(const ShadowList* shadowList, LayoutUnit &top, LayoutUnit &right, LayoutUnit &bottom, LayoutUnit &left) const
1302 {
1303 top = 0;
1304 right = 0;
1305 bottom = 0;
1306 left = 0;
1307
1308 size_t shadowCount = shadowList ? shadowList->shadows().size() : 0;
1309 for (size_t i = 0; i < shadowCount; ++i) {
1310 const ShadowData& shadow = shadowList->shadows()[i];
1311 if (shadow.style() == Inset)
1312 continue;
1313 float blurAndSpread = shadow.blur() + shadow.spread();
1314
1315 top = std::min<LayoutUnit>(top, shadow.y() - blurAndSpread);
1316 right = std::max<LayoutUnit>(right, shadow.x() + blurAndSpread);
1317 bottom = std::max<LayoutUnit>(bottom, shadow.y() + blurAndSpread);
1318 left = std::min<LayoutUnit>(left, shadow.x() - blurAndSpread);
1319 }
1320 }
1321
getShadowInsetExtent(const ShadowList * shadowList) const1322 LayoutBoxExtent RenderStyle::getShadowInsetExtent(const ShadowList* shadowList) const
1323 {
1324 LayoutUnit top = 0;
1325 LayoutUnit right = 0;
1326 LayoutUnit bottom = 0;
1327 LayoutUnit left = 0;
1328
1329 size_t shadowCount = shadowList ? shadowList->shadows().size() : 0;
1330 for (size_t i = 0; i < shadowCount; ++i) {
1331 const ShadowData& shadow = shadowList->shadows()[i];
1332 if (shadow.style() == Normal)
1333 continue;
1334 float blurAndSpread = shadow.blur() + shadow.spread();
1335 top = std::max<LayoutUnit>(top, shadow.y() + blurAndSpread);
1336 right = std::min<LayoutUnit>(right, shadow.x() - blurAndSpread);
1337 bottom = std::min<LayoutUnit>(bottom, shadow.y() - blurAndSpread);
1338 left = std::max<LayoutUnit>(left, shadow.x() + blurAndSpread);
1339 }
1340
1341 return LayoutBoxExtent(top, right, bottom, left);
1342 }
1343
getShadowHorizontalExtent(const ShadowList * shadowList,LayoutUnit & left,LayoutUnit & right) const1344 void RenderStyle::getShadowHorizontalExtent(const ShadowList* shadowList, LayoutUnit &left, LayoutUnit &right) const
1345 {
1346 left = 0;
1347 right = 0;
1348
1349 size_t shadowCount = shadowList ? shadowList->shadows().size() : 0;
1350 for (size_t i = 0; i < shadowCount; ++i) {
1351 const ShadowData& shadow = shadowList->shadows()[i];
1352 if (shadow.style() == Inset)
1353 continue;
1354 float blurAndSpread = shadow.blur() + shadow.spread();
1355
1356 left = std::min<LayoutUnit>(left, shadow.x() - blurAndSpread);
1357 right = std::max<LayoutUnit>(right, shadow.x() + blurAndSpread);
1358 }
1359 }
1360
getShadowVerticalExtent(const ShadowList * shadowList,LayoutUnit & top,LayoutUnit & bottom) const1361 void RenderStyle::getShadowVerticalExtent(const ShadowList* shadowList, LayoutUnit &top, LayoutUnit &bottom) const
1362 {
1363 top = 0;
1364 bottom = 0;
1365
1366 size_t shadowCount = shadowList ? shadowList->shadows().size() : 0;
1367 for (size_t i = 0; i < shadowCount; ++i) {
1368 const ShadowData& shadow = shadowList->shadows()[i];
1369 if (shadow.style() == Inset)
1370 continue;
1371 float blurAndSpread = shadow.blur() + shadow.spread();
1372
1373 top = std::min<LayoutUnit>(top, shadow.y() - blurAndSpread);
1374 bottom = std::max<LayoutUnit>(bottom, shadow.y() + blurAndSpread);
1375 }
1376 }
1377
visitedDependentDecorationStyleColor() const1378 StyleColor RenderStyle::visitedDependentDecorationStyleColor() const
1379 {
1380 bool isVisited = insideLink() == InsideVisitedLink;
1381
1382 StyleColor styleColor = isVisited ? visitedLinkTextDecorationColor() : textDecorationColor();
1383
1384 if (!styleColor.isCurrentColor())
1385 return styleColor;
1386
1387 if (textStrokeWidth()) {
1388 // Prefer stroke color if possible, but not if it's fully transparent.
1389 StyleColor textStrokeStyleColor = isVisited ? visitedLinkTextStrokeColor() : textStrokeColor();
1390 if (!textStrokeStyleColor.isCurrentColor() && textStrokeStyleColor.color().alpha())
1391 return textStrokeStyleColor;
1392 }
1393
1394 return isVisited ? visitedLinkTextFillColor() : textFillColor();
1395 }
1396
visitedDependentDecorationColor() const1397 Color RenderStyle::visitedDependentDecorationColor() const
1398 {
1399 bool isVisited = insideLink() == InsideVisitedLink;
1400 return visitedDependentDecorationStyleColor().resolve(isVisited ? visitedLinkColor() : color());
1401 }
1402
colorIncludingFallback(int colorProperty,bool visitedLink) const1403 Color RenderStyle::colorIncludingFallback(int colorProperty, bool visitedLink) const
1404 {
1405 StyleColor result(StyleColor::currentColor());
1406 EBorderStyle borderStyle = BNONE;
1407 switch (colorProperty) {
1408 case CSSPropertyBackgroundColor:
1409 result = visitedLink ? visitedLinkBackgroundColor() : backgroundColor();
1410 break;
1411 case CSSPropertyBorderLeftColor:
1412 result = visitedLink ? visitedLinkBorderLeftColor() : borderLeftColor();
1413 borderStyle = borderLeftStyle();
1414 break;
1415 case CSSPropertyBorderRightColor:
1416 result = visitedLink ? visitedLinkBorderRightColor() : borderRightColor();
1417 borderStyle = borderRightStyle();
1418 break;
1419 case CSSPropertyBorderTopColor:
1420 result = visitedLink ? visitedLinkBorderTopColor() : borderTopColor();
1421 borderStyle = borderTopStyle();
1422 break;
1423 case CSSPropertyBorderBottomColor:
1424 result = visitedLink ? visitedLinkBorderBottomColor() : borderBottomColor();
1425 borderStyle = borderBottomStyle();
1426 break;
1427 case CSSPropertyColor:
1428 result = visitedLink ? visitedLinkColor() : color();
1429 break;
1430 case CSSPropertyOutlineColor:
1431 result = visitedLink ? visitedLinkOutlineColor() : outlineColor();
1432 break;
1433 case CSSPropertyWebkitColumnRuleColor:
1434 result = visitedLink ? visitedLinkColumnRuleColor() : columnRuleColor();
1435 break;
1436 case CSSPropertyWebkitTextEmphasisColor:
1437 result = visitedLink ? visitedLinkTextEmphasisColor() : textEmphasisColor();
1438 break;
1439 case CSSPropertyWebkitTextFillColor:
1440 result = visitedLink ? visitedLinkTextFillColor() : textFillColor();
1441 break;
1442 case CSSPropertyWebkitTextStrokeColor:
1443 result = visitedLink ? visitedLinkTextStrokeColor() : textStrokeColor();
1444 break;
1445 case CSSPropertyFloodColor:
1446 result = floodColor();
1447 break;
1448 case CSSPropertyLightingColor:
1449 result = lightingColor();
1450 break;
1451 case CSSPropertyStopColor:
1452 result = stopColor();
1453 break;
1454 case CSSPropertyWebkitTapHighlightColor:
1455 result = tapHighlightColor();
1456 break;
1457 default:
1458 ASSERT_NOT_REACHED();
1459 break;
1460 }
1461
1462 if (!result.isCurrentColor())
1463 return result.color();
1464
1465 // FIXME: Treating styled borders with initial color differently causes problems
1466 // See crbug.com/316559, crbug.com/276231
1467 if (!visitedLink && (borderStyle == INSET || borderStyle == OUTSET || borderStyle == RIDGE || borderStyle == GROOVE))
1468 return Color(238, 238, 238);
1469 return visitedLink ? visitedLinkColor() : color();
1470 }
1471
visitedDependentColor(int colorProperty) const1472 Color RenderStyle::visitedDependentColor(int colorProperty) const
1473 {
1474 Color unvisitedColor = colorIncludingFallback(colorProperty, false);
1475 if (insideLink() != InsideVisitedLink)
1476 return unvisitedColor;
1477
1478 Color visitedColor = colorIncludingFallback(colorProperty, true);
1479
1480 // FIXME: Technically someone could explicitly specify the color transparent, but for now we'll just
1481 // assume that if the background color is transparent that it wasn't set. Note that it's weird that
1482 // we're returning unvisited info for a visited link, but given our restriction that the alpha values
1483 // have to match, it makes more sense to return the unvisited background color if specified than it
1484 // does to return black. This behavior matches what Firefox 4 does as well.
1485 if (colorProperty == CSSPropertyBackgroundColor && visitedColor == Color::transparent)
1486 return unvisitedColor;
1487
1488 // Take the alpha from the unvisited color, but get the RGB values from the visited color.
1489 return Color(visitedColor.red(), visitedColor.green(), visitedColor.blue(), unvisitedColor.alpha());
1490 }
1491
borderBefore() const1492 const BorderValue& RenderStyle::borderBefore() const
1493 {
1494 switch (writingMode()) {
1495 case TopToBottomWritingMode:
1496 return borderTop();
1497 case BottomToTopWritingMode:
1498 return borderBottom();
1499 case LeftToRightWritingMode:
1500 return borderLeft();
1501 case RightToLeftWritingMode:
1502 return borderRight();
1503 }
1504 ASSERT_NOT_REACHED();
1505 return borderTop();
1506 }
1507
borderAfter() const1508 const BorderValue& RenderStyle::borderAfter() const
1509 {
1510 switch (writingMode()) {
1511 case TopToBottomWritingMode:
1512 return borderBottom();
1513 case BottomToTopWritingMode:
1514 return borderTop();
1515 case LeftToRightWritingMode:
1516 return borderRight();
1517 case RightToLeftWritingMode:
1518 return borderLeft();
1519 }
1520 ASSERT_NOT_REACHED();
1521 return borderBottom();
1522 }
1523
borderStart() const1524 const BorderValue& RenderStyle::borderStart() const
1525 {
1526 if (isHorizontalWritingMode())
1527 return isLeftToRightDirection() ? borderLeft() : borderRight();
1528 return isLeftToRightDirection() ? borderTop() : borderBottom();
1529 }
1530
borderEnd() const1531 const BorderValue& RenderStyle::borderEnd() const
1532 {
1533 if (isHorizontalWritingMode())
1534 return isLeftToRightDirection() ? borderRight() : borderLeft();
1535 return isLeftToRightDirection() ? borderBottom() : borderTop();
1536 }
1537
borderBeforeWidth() const1538 unsigned short RenderStyle::borderBeforeWidth() const
1539 {
1540 switch (writingMode()) {
1541 case TopToBottomWritingMode:
1542 return borderTopWidth();
1543 case BottomToTopWritingMode:
1544 return borderBottomWidth();
1545 case LeftToRightWritingMode:
1546 return borderLeftWidth();
1547 case RightToLeftWritingMode:
1548 return borderRightWidth();
1549 }
1550 ASSERT_NOT_REACHED();
1551 return borderTopWidth();
1552 }
1553
borderAfterWidth() const1554 unsigned short RenderStyle::borderAfterWidth() const
1555 {
1556 switch (writingMode()) {
1557 case TopToBottomWritingMode:
1558 return borderBottomWidth();
1559 case BottomToTopWritingMode:
1560 return borderTopWidth();
1561 case LeftToRightWritingMode:
1562 return borderRightWidth();
1563 case RightToLeftWritingMode:
1564 return borderLeftWidth();
1565 }
1566 ASSERT_NOT_REACHED();
1567 return borderBottomWidth();
1568 }
1569
borderStartWidth() const1570 unsigned short RenderStyle::borderStartWidth() const
1571 {
1572 if (isHorizontalWritingMode())
1573 return isLeftToRightDirection() ? borderLeftWidth() : borderRightWidth();
1574 return isLeftToRightDirection() ? borderTopWidth() : borderBottomWidth();
1575 }
1576
borderEndWidth() const1577 unsigned short RenderStyle::borderEndWidth() const
1578 {
1579 if (isHorizontalWritingMode())
1580 return isLeftToRightDirection() ? borderRightWidth() : borderLeftWidth();
1581 return isLeftToRightDirection() ? borderBottomWidth() : borderTopWidth();
1582 }
1583
setMarginStart(const Length & margin)1584 void RenderStyle::setMarginStart(const Length& margin)
1585 {
1586 if (isHorizontalWritingMode()) {
1587 if (isLeftToRightDirection())
1588 setMarginLeft(margin);
1589 else
1590 setMarginRight(margin);
1591 } else {
1592 if (isLeftToRightDirection())
1593 setMarginTop(margin);
1594 else
1595 setMarginBottom(margin);
1596 }
1597 }
1598
setMarginEnd(const Length & margin)1599 void RenderStyle::setMarginEnd(const Length& margin)
1600 {
1601 if (isHorizontalWritingMode()) {
1602 if (isLeftToRightDirection())
1603 setMarginRight(margin);
1604 else
1605 setMarginLeft(margin);
1606 } else {
1607 if (isLeftToRightDirection())
1608 setMarginBottom(margin);
1609 else
1610 setMarginTop(margin);
1611 }
1612 }
1613
textEmphasisMark() const1614 TextEmphasisMark RenderStyle::textEmphasisMark() const
1615 {
1616 TextEmphasisMark mark = static_cast<TextEmphasisMark>(rareInheritedData->textEmphasisMark);
1617 if (mark != TextEmphasisMarkAuto)
1618 return mark;
1619
1620 if (isHorizontalWritingMode())
1621 return TextEmphasisMarkDot;
1622
1623 return TextEmphasisMarkSesame;
1624 }
1625
initialTapHighlightColor()1626 Color RenderStyle::initialTapHighlightColor()
1627 {
1628 return RenderTheme::tapHighlightColor();
1629 }
1630
imageOutsets(const NinePieceImage & image) const1631 LayoutBoxExtent RenderStyle::imageOutsets(const NinePieceImage& image) const
1632 {
1633 return LayoutBoxExtent(NinePieceImage::computeOutset(image.outset().top(), borderTopWidth()),
1634 NinePieceImage::computeOutset(image.outset().right(), borderRightWidth()),
1635 NinePieceImage::computeOutset(image.outset().bottom(), borderBottomWidth()),
1636 NinePieceImage::computeOutset(image.outset().left(), borderLeftWidth()));
1637 }
1638
setBorderImageSource(PassRefPtr<StyleImage> image)1639 void RenderStyle::setBorderImageSource(PassRefPtr<StyleImage> image)
1640 {
1641 if (surround->border.m_image.image() == image.get())
1642 return;
1643 surround.access()->border.m_image.setImage(image);
1644 }
1645
setBorderImageSlices(const LengthBox & slices)1646 void RenderStyle::setBorderImageSlices(const LengthBox& slices)
1647 {
1648 if (surround->border.m_image.imageSlices() == slices)
1649 return;
1650 surround.access()->border.m_image.setImageSlices(slices);
1651 }
1652
setBorderImageWidth(const BorderImageLengthBox & slices)1653 void RenderStyle::setBorderImageWidth(const BorderImageLengthBox& slices)
1654 {
1655 if (surround->border.m_image.borderSlices() == slices)
1656 return;
1657 surround.access()->border.m_image.setBorderSlices(slices);
1658 }
1659
setBorderImageOutset(const BorderImageLengthBox & outset)1660 void RenderStyle::setBorderImageOutset(const BorderImageLengthBox& outset)
1661 {
1662 if (surround->border.m_image.outset() == outset)
1663 return;
1664 surround.access()->border.m_image.setOutset(outset);
1665 }
1666
calcBorderRadiiConstraintScaleFor(const FloatRect & rect,const FloatRoundedRect::Radii & radii)1667 float calcBorderRadiiConstraintScaleFor(const FloatRect& rect, const FloatRoundedRect::Radii& radii)
1668 {
1669 // Constrain corner radii using CSS3 rules:
1670 // http://www.w3.org/TR/css3-background/#the-border-radius
1671
1672 float factor = 1;
1673 float radiiSum;
1674
1675 // top
1676 radiiSum = radii.topLeft().width() + radii.topRight().width(); // Casts to avoid integer overflow.
1677 if (radiiSum > rect.width())
1678 factor = std::min(rect.width() / radiiSum, factor);
1679
1680 // bottom
1681 radiiSum = radii.bottomLeft().width() + radii.bottomRight().width();
1682 if (radiiSum > rect.width())
1683 factor = std::min(rect.width() / radiiSum, factor);
1684
1685 // left
1686 radiiSum = radii.topLeft().height() + radii.bottomLeft().height();
1687 if (radiiSum > rect.height())
1688 factor = std::min(rect.height() / radiiSum, factor);
1689
1690 // right
1691 radiiSum = radii.topRight().height() + radii.bottomRight().height();
1692 if (radiiSum > rect.height())
1693 factor = std::min(rect.height() / radiiSum, factor);
1694
1695 ASSERT(factor <= 1);
1696 return factor;
1697 }
1698
borderObscuresBackground() const1699 bool RenderStyle::borderObscuresBackground() const
1700 {
1701 if (!hasBorder())
1702 return false;
1703
1704 // Bail if we have any border-image for now. We could look at the image alpha to improve this.
1705 if (borderImage().image())
1706 return false;
1707
1708 BorderEdge edges[4];
1709 getBorderEdgeInfo(edges);
1710
1711 for (int i = BSTop; i <= BSLeft; ++i) {
1712 const BorderEdge& currEdge = edges[i];
1713 if (!currEdge.obscuresBackground())
1714 return false;
1715 }
1716
1717 return true;
1718 }
1719
getBorderEdgeInfo(BorderEdge edges[],bool includeLogicalLeftEdge,bool includeLogicalRightEdge) const1720 void RenderStyle::getBorderEdgeInfo(BorderEdge edges[], bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const
1721 {
1722 bool horizontal = isHorizontalWritingMode();
1723
1724 edges[BSTop] = BorderEdge(borderTopWidth(),
1725 visitedDependentColor(CSSPropertyBorderTopColor),
1726 borderTopStyle(),
1727 borderTopIsTransparent(),
1728 horizontal || includeLogicalLeftEdge);
1729
1730 edges[BSRight] = BorderEdge(borderRightWidth(),
1731 visitedDependentColor(CSSPropertyBorderRightColor),
1732 borderRightStyle(),
1733 borderRightIsTransparent(),
1734 !horizontal || includeLogicalRightEdge);
1735
1736 edges[BSBottom] = BorderEdge(borderBottomWidth(),
1737 visitedDependentColor(CSSPropertyBorderBottomColor),
1738 borderBottomStyle(),
1739 borderBottomIsTransparent(),
1740 horizontal || includeLogicalRightEdge);
1741
1742 edges[BSLeft] = BorderEdge(borderLeftWidth(),
1743 visitedDependentColor(CSSPropertyBorderLeftColor),
1744 borderLeftStyle(),
1745 borderLeftIsTransparent(),
1746 !horizontal || includeLogicalLeftEdge);
1747 }
1748
1749 } // namespace blink
1750