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Side by Side Diff: Source/core/editing/Position.cpp

Issue 1309673002: Move inRenderedText() to VisibleUnits.cpp from Position.cpp (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: 2015-08-21T17:53:03 Created 5 years, 4 months ago
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1 /* 1 /*
2 * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved. 2 * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 1. Redistributions of source code must retain the above copyright 7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer. 8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright 9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the 10 * notice, this list of conditions and the following disclaimer in the
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21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */ 24 */
25 25
26 #include "config.h" 26 #include "config.h"
27 #include "core/editing/Position.h" 27 #include "core/editing/Position.h"
28 28
29 #include "core/dom/shadow/ElementShadow.h" 29 #include "core/dom/shadow/ElementShadow.h"
30 #include "core/editing/EditingUtilities.h" 30 #include "core/editing/EditingUtilities.h"
31 #include "core/editing/PositionIterator.h"
32 #include "core/editing/TextAffinity.h" 31 #include "core/editing/TextAffinity.h"
33 #include "core/editing/VisibleUnits.h" 32 #include "core/editing/VisibleUnits.h"
34 #include "core/layout/LayoutBlock.h" 33 #include "core/layout/LayoutObject.h"
35 #include "core/layout/LayoutInline.h"
36 #include "core/layout/LayoutText.h"
37 #include "core/layout/line/InlineTextBox.h"
38 #include "wtf/text/CString.h" 34 #include "wtf/text/CString.h"
39 #include <stdio.h> 35 #include <stdio.h>
40 36
41 namespace blink { 37 namespace blink {
42 38
43 #if ENABLE(ASSERT) 39 #if ENABLE(ASSERT)
44 static bool canBeAnchorNode(Node* node) 40 static bool canBeAnchorNode(Node* node)
45 { 41 {
46 if (!node || node->isFirstLetterPseudoElement()) 42 if (!node || node->isFirstLetterPseudoElement())
47 return true; 43 return true;
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452 return mostForwardCaretPosition(*this, rule); 448 return mostForwardCaretPosition(*this, rule);
453 } 449 }
454 450
455 template <typename Strategy> 451 template <typename Strategy>
456 PositionAlgorithm<Strategy> PositionAlgorithm<Strategy>::downstream(EditingBound aryCrossingRule rule) const 452 PositionAlgorithm<Strategy> PositionAlgorithm<Strategy>::downstream(EditingBound aryCrossingRule rule) const
457 { 453 {
458 return mostBackwardCaretPosition(*this, rule); 454 return mostBackwardCaretPosition(*this, rule);
459 } 455 }
460 456
461 template <typename Strategy> 457 template <typename Strategy>
462 static bool inRenderedTextAlgorithm(const PositionAlgorithm<Strategy>& position)
463 {
464 Node* const anchorNode = position.anchorNode();
465 if (!anchorNode || !anchorNode->isTextNode())
466 return false;
467
468 LayoutObject* layoutObject = anchorNode->layoutObject();
469 if (!layoutObject)
470 return false;
471
472 const int offsetInNode = position.computeEditingOffset();
473 LayoutText* textLayoutObject = toLayoutText(layoutObject);
474 for (InlineTextBox *box = textLayoutObject->firstTextBox(); box; box = box-> nextTextBox()) {
475 if (offsetInNode < static_cast<int>(box->start()) && !textLayoutObject-> containsReversedText()) {
476 // The offset we're looking for is before this node
477 // this means the offset must be in content that is
478 // not laid out. Return false.
479 return false;
480 }
481 if (box->containsCaretOffset(offsetInNode)) {
482 // Return false for offsets inside composed characters.
483 return offsetInNode == 0 || offsetInNode == textLayoutObject->nextOf fset(textLayoutObject->previousOffset(offsetInNode));
484 }
485 }
486
487 return false;
488 }
489
490 bool inRenderedText(const Position& position)
491 {
492 return inRenderedTextAlgorithm<EditingStrategy>(position);
493 }
494
495 bool inRenderedText(const PositionInComposedTree& position)
496 {
497 return inRenderedTextAlgorithm<EditingInComposedTreeStrategy>(position);
498 }
499
500 template <typename Strategy>
501 void PositionAlgorithm<Strategy>::debugPosition(const char* msg) const 458 void PositionAlgorithm<Strategy>::debugPosition(const char* msg) const
502 { 459 {
503 static const char* const anchorTypes[] = { 460 static const char* const anchorTypes[] = {
504 "OffsetInAnchor", 461 "OffsetInAnchor",
505 "BeforeAnchor", 462 "BeforeAnchor",
506 "AfterAnchor", 463 "AfterAnchor",
507 "BeforeChildren", 464 "BeforeChildren",
508 "AfterChildren", 465 "AfterChildren",
509 "Invalid", 466 "Invalid",
510 }; 467 };
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673 630
674 void showTree(const blink::Position* pos) 631 void showTree(const blink::Position* pos)
675 { 632 {
676 if (pos) 633 if (pos)
677 pos->showTreeForThis(); 634 pos->showTreeForThis();
678 else 635 else
679 fprintf(stderr, "Cannot showTree for (nil)\n"); 636 fprintf(stderr, "Cannot showTree for (nil)\n");
680 } 637 }
681 638
682 #endif 639 #endif
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