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Side by Side Diff: sky/engine/core/rendering/InlineIterator.h

Issue 1068683002: Delete RenderBlockFlow. (Closed) Base URL: https://github.com/domokit/mojo.git@block
Patch Set: Remove unused float-related code instead of moving it. Created 5 years, 8 months ago
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1 /* 1 /*
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010 Apple Inc. All right r eserved. 3 * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010 Apple Inc. All right r eserved.
4 * Copyright (C) 2010 Google Inc. All rights reserved. 4 * Copyright (C) 2010 Google Inc. All rights reserved.
5 * 5 *
6 * This library is free software; you can redistribute it and/or 6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public 7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either 8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version. 9 * version 2 of the License, or (at your option) any later version.
10 * 10 *
11 * This library is distributed in the hope that it will be useful, 11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details. 14 * Library General Public License for more details.
15 * 15 *
16 * You should have received a copy of the GNU Library General Public License 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 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, 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA. 19 * Boston, MA 02110-1301, USA.
20 * 20 *
21 */ 21 */
22 22
23 #ifndef SKY_ENGINE_CORE_RENDERING_INLINEITERATOR_H_ 23 #ifndef SKY_ENGINE_CORE_RENDERING_INLINEITERATOR_H_
24 #define SKY_ENGINE_CORE_RENDERING_INLINEITERATOR_H_ 24 #define SKY_ENGINE_CORE_RENDERING_INLINEITERATOR_H_
25 25
26 #include "sky/engine/core/rendering/BidiRun.h" 26 #include "sky/engine/core/rendering/BidiRun.h"
27 #include "sky/engine/core/rendering/RenderBlockFlow.h"
28 #include "sky/engine/core/rendering/RenderInline.h" 27 #include "sky/engine/core/rendering/RenderInline.h"
28 #include "sky/engine/core/rendering/RenderParagraph.h"
29 #include "sky/engine/core/rendering/RenderText.h" 29 #include "sky/engine/core/rendering/RenderText.h"
30 #include "sky/engine/core/rendering/line/TrailingObjects.h"
30 #include "sky/engine/wtf/StdLibExtras.h" 31 #include "sky/engine/wtf/StdLibExtras.h"
31 32
32 namespace blink { 33 namespace blink {
33 34
34 // This class is used to RenderInline subtrees, stepping by character within the 35 // This class is used to RenderInline subtrees, stepping by character within the
35 // text children. InlineIterator will use bidiNext to find the next RenderText 36 // text children. InlineIterator will use bidiNext to find the next RenderText
36 // optionally notifying a BidiResolver every time it steps into/out of a RenderI nline. 37 // optionally notifying a BidiResolver every time it steps into/out of a RenderI nline.
37 class InlineIterator { 38 class InlineIterator {
38 public: 39 public:
39 enum IncrementRule { 40 enum IncrementRule {
(...skipping 236 matching lines...) Expand 10 before | Expand all | Expand 10 after
276 InlineBidiResolver* observer = 0; 277 InlineBidiResolver* observer = 0;
277 return bidiNextSkippingEmptyInlines(root, current, observer); 278 return bidiNextSkippingEmptyInlines(root, current, observer);
278 } 279 }
279 280
280 static inline RenderObject* bidiNextIncludingEmptyInlines(RenderObject* root, Re nderObject* current, bool* endOfInlinePtr = 0) 281 static inline RenderObject* bidiNextIncludingEmptyInlines(RenderObject* root, Re nderObject* current, bool* endOfInlinePtr = 0)
281 { 282 {
282 InlineBidiResolver* observer = 0; // Callers who include empty inlines, neve r use an observer. 283 InlineBidiResolver* observer = 0; // Callers who include empty inlines, neve r use an observer.
283 return bidiNextShared(root, current, observer, IncludeEmptyInlines, endOfInl inePtr); 284 return bidiNextShared(root, current, observer, IncludeEmptyInlines, endOfInl inePtr);
284 } 285 }
285 286
286 static inline RenderObject* bidiFirstSkippingEmptyInlines(RenderBlockFlow* root, BidiRunList<BidiRun>& runs, InlineBidiResolver* resolver = 0) 287 static inline RenderObject* bidiFirstSkippingEmptyInlines(RenderParagraph* root, BidiRunList<BidiRun>& runs, InlineBidiResolver* resolver = 0)
287 { 288 {
288 RenderObject* o = root->firstChild(); 289 RenderObject* o = root->firstChild();
289 if (!o) 290 if (!o)
290 return 0; 291 return 0;
291 292
292 if (o->isRenderInline()) { 293 if (o->isRenderInline()) {
293 notifyObserverEnteredObject(resolver, o); 294 notifyObserverEnteredObject(resolver, o);
294 if (!isEmptyInline(o)) 295 if (!isEmptyInline(o))
295 o = bidiNextSkippingEmptyInlines(root, o, resolver); 296 o = bidiNextSkippingEmptyInlines(root, o, resolver);
296 else { 297 else {
(...skipping 27 matching lines...) Expand all
324 325
325 inline void InlineIterator::fastIncrementInTextNode() 326 inline void InlineIterator::fastIncrementInTextNode()
326 { 327 {
327 ASSERT(m_obj); 328 ASSERT(m_obj);
328 ASSERT(m_obj->isText()); 329 ASSERT(m_obj->isText());
329 ASSERT(m_pos <= toRenderText(m_obj)->textLength()); 330 ASSERT(m_pos <= toRenderText(m_obj)->textLength());
330 if (m_pos < INT_MAX) 331 if (m_pos < INT_MAX)
331 m_pos++; 332 m_pos++;
332 } 333 }
333 334
334 // FIXME: This is used by RenderBlockFlow for simplified layout, and has nothing to do with bidi 335 // FIXME: This is used by RenderParagraph for simplified layout, and has nothing to do with bidi
335 // it shouldn't use functions called bidiFirst and bidiNext. 336 // it shouldn't use functions called bidiFirst and bidiNext.
336 class InlineWalker { 337 class InlineWalker {
337 public: 338 public:
338 InlineWalker(RenderBlock* root) 339 InlineWalker(RenderBlock* root)
339 : m_root(root) 340 : m_root(root)
340 , m_current(0) 341 , m_current(0)
341 , m_atEndOfInline(false) 342 , m_atEndOfInline(false)
342 { 343 {
343 // FIXME: This class should be taught how to do the SkipEmptyInlines cod epath as well. 344 // FIXME: This class should be taught how to do the SkipEmptyInlines cod epath as well.
344 m_current = bidiFirstIncludingEmptyInlines(m_root); 345 m_current = bidiFirstIncludingEmptyInlines(m_root);
(...skipping 248 matching lines...) Expand 10 before | Expand all | Expand 10 after
593 // We don't care if we encounter bidi directional overrides. 594 // We don't care if we encounter bidi directional overrides.
594 void embed(WTF::Unicode::Direction, BidiEmbeddingSource) { } 595 void embed(WTF::Unicode::Direction, BidiEmbeddingSource) { }
595 void commitExplicitEmbedding(BidiRunList<BidiRun>&) { } 596 void commitExplicitEmbedding(BidiRunList<BidiRun>&) { }
596 BidiRunList<BidiRun>& runs() { return m_runs; } 597 BidiRunList<BidiRun>& runs() { return m_runs; }
597 598
598 void addFakeRunIfNecessary(RenderObject* obj, unsigned pos, unsigned end, In lineBidiResolver& resolver) 599 void addFakeRunIfNecessary(RenderObject* obj, unsigned pos, unsigned end, In lineBidiResolver& resolver)
599 { 600 {
600 // We only need to add a fake run for a given isolated span once during each call to createBidiRunsForLine. 601 // We only need to add a fake run for a given isolated span once during each call to createBidiRunsForLine.
601 // We'll be called for every span inside the isolated span so we just ig nore subsequent calls. 602 // We'll be called for every span inside the isolated span so we just ig nore subsequent calls.
602 // We also avoid creating a fake run until we hit a child that warrants one, e.g. we skip floats. 603 // We also avoid creating a fake run until we hit a child that warrants one, e.g. we skip floats.
603 if (RenderBlockFlow::shouldSkipCreatingRunsForObject(obj)) 604 if (RenderParagraph::shouldSkipCreatingRunsForObject(obj))
604 return; 605 return;
605 if (!m_haveAddedFakeRunForRootIsolate) { 606 if (!m_haveAddedFakeRunForRootIsolate) {
606 BidiRun* run = addPlaceholderRunForIsolatedInline(resolver, obj, pos ); 607 BidiRun* run = addPlaceholderRunForIsolatedInline(resolver, obj, pos );
607 resolver.setMidpointStateForIsolatedRun(run, m_midpointStateForRootI solate); 608 resolver.setMidpointStateForIsolatedRun(run, m_midpointStateForRootI solate);
608 m_haveAddedFakeRunForRootIsolate = true; 609 m_haveAddedFakeRunForRootIsolate = true;
609 } 610 }
610 // obj and pos together denote a single position in the inline, from whi ch the parsing of the isolate will start. 611 // obj and pos together denote a single position in the inline, from whi ch the parsing of the isolate will start.
611 // We don't need to mark the end of the run because this is implicit: it is either endOfLine or the end of the 612 // We don't need to mark the end of the run because this is implicit: it is either endOfLine or the end of the
612 // isolate, when we call createBidiRunsForLine it will stop at whichever comes first. 613 // isolate, when we call createBidiRunsForLine it will stop at whichever comes first.
613 } 614 }
614 615
615 private: 616 private:
616 unsigned m_nestedIsolateCount; 617 unsigned m_nestedIsolateCount;
617 bool m_haveAddedFakeRunForRootIsolate; 618 bool m_haveAddedFakeRunForRootIsolate;
618 LineMidpointState m_midpointStateForRootIsolate; 619 LineMidpointState m_midpointStateForRootIsolate;
619 BidiRunList<BidiRun>& m_runs; 620 BidiRunList<BidiRun>& m_runs;
620 }; 621 };
621 622
622 static void inline appendRunObjectIfNecessary(RenderObject* obj, unsigned start, unsigned end, InlineBidiResolver& resolver, AppendRunBehavior behavior, Isolate Tracker& tracker) 623 static void inline appendRunObjectIfNecessary(RenderObject* obj, unsigned start, unsigned end, InlineBidiResolver& resolver, AppendRunBehavior behavior, Isolate Tracker& tracker)
623 { 624 {
624 if (behavior == AppendingFakeRun) 625 if (behavior == AppendingFakeRun)
625 tracker.addFakeRunIfNecessary(obj, start, end, resolver); 626 tracker.addFakeRunIfNecessary(obj, start, end, resolver);
626 else 627 else
627 resolver.runs().addRun(createRun(start, end, obj, resolver)); 628 resolver.runs().addRun(createRun(start, end, obj, resolver));
628 } 629 }
629 630
630 static void adjustMidpointsAndAppendRunsForObjectIfNeeded(RenderObject* obj, uns igned start, unsigned end, InlineBidiResolver& resolver, AppendRunBehavior behav ior, IsolateTracker& tracker) 631 static void adjustMidpointsAndAppendRunsForObjectIfNeeded(RenderObject* obj, uns igned start, unsigned end, InlineBidiResolver& resolver, AppendRunBehavior behav ior, IsolateTracker& tracker)
631 { 632 {
632 if (start > end || RenderBlockFlow::shouldSkipCreatingRunsForObject(obj)) 633 if (start > end || RenderParagraph::shouldSkipCreatingRunsForObject(obj))
633 return; 634 return;
634 635
635 LineMidpointState& lineMidpointState = resolver.midpointState(); 636 LineMidpointState& lineMidpointState = resolver.midpointState();
636 bool haveNextMidpoint = (lineMidpointState.currentMidpoint() < lineMidpointS tate.numMidpoints()); 637 bool haveNextMidpoint = (lineMidpointState.currentMidpoint() < lineMidpointS tate.numMidpoints());
637 InlineIterator nextMidpoint; 638 InlineIterator nextMidpoint;
638 if (haveNextMidpoint) 639 if (haveNextMidpoint)
639 nextMidpoint = lineMidpointState.midpoints()[lineMidpointState.currentMi dpoint()]; 640 nextMidpoint = lineMidpointState.midpoints()[lineMidpointState.currentMi dpoint()];
640 if (lineMidpointState.betweenMidpoints()) { 641 if (lineMidpointState.betweenMidpoints()) {
641 if (!(haveNextMidpoint && nextMidpoint.object() == obj)) 642 if (!(haveNextMidpoint && nextMidpoint.object() == obj))
642 return; 643 return;
(...skipping 76 matching lines...) Expand 10 before | Expand all | Expand 10 after
719 m_sor = m_eor; 720 m_sor = m_eor;
720 } 721 }
721 722
722 m_direction = WTF::Unicode::OtherNeutral; 723 m_direction = WTF::Unicode::OtherNeutral;
723 m_status.eor = WTF::Unicode::OtherNeutral; 724 m_status.eor = WTF::Unicode::OtherNeutral;
724 } 725 }
725 726
726 } 727 }
727 728
728 #endif // SKY_ENGINE_CORE_RENDERING_INLINEITERATOR_H_ 729 #endif // SKY_ENGINE_CORE_RENDERING_INLINEITERATOR_H_
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