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1 /* | 1 /* |
2 * (C) 1999 Lars Knoll (knoll@kde.org) | 2 * (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 2000 Dirk Mueller (mueller@kde.org) | 3 * (C) 2000 Dirk Mueller (mueller@kde.org) |
4 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All r
ights reserved. | 4 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All r
ights 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 * |
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224 | 224 |
225 FontCachePurgePreventer fontCachePurgePreventer; | 225 FontCachePurgePreventer fontCachePurgePreventer; |
226 | 226 |
227 LayoutUnit selTop = root().selectionTop(); | 227 LayoutUnit selTop = root().selectionTop(); |
228 LayoutUnit selHeight = root().selectionHeight(); | 228 LayoutUnit selHeight = root().selectionHeight(); |
229 const ComputedStyle& styleToUse = getLineLayoutItem().styleRef(isFirstLineSt
yle()); | 229 const ComputedStyle& styleToUse = getLineLayoutItem().styleRef(isFirstLineSt
yle()); |
230 const Font& font = styleToUse.font(); | 230 const Font& font = styleToUse.font(); |
231 | 231 |
232 StringBuilder charactersWithHyphen; | 232 StringBuilder charactersWithHyphen; |
233 bool respectHyphen = ePos == m_len && hasHyphen(); | 233 bool respectHyphen = ePos == m_len && hasHyphen(); |
234 TextRun textRun = constructTextRun(styleToUse, font, respectHyphen ? &charac
tersWithHyphen : 0); | 234 TextRun textRun = constructTextRun(styleToUse, respectHyphen ? &charactersWi
thHyphen : 0); |
235 | 235 |
236 LayoutPoint startingPoint = LayoutPoint(logicalLeft(), selTop); | 236 LayoutPoint startingPoint = LayoutPoint(logicalLeft(), selTop); |
237 LayoutRect r; | 237 LayoutRect r; |
238 if (sPos || ePos != static_cast<int>(m_len)) { | 238 if (sPos || ePos != static_cast<int>(m_len)) { |
239 r = LayoutRect(enclosingIntRect(font.selectionRectForText(textRun, Float
Point(startingPoint), selHeight, sPos, ePos))); | 239 r = LayoutRect(enclosingIntRect(font.selectionRectForText(textRun, Float
Point(startingPoint), selHeight, sPos, ePos))); |
240 } else { // Avoid computing the font width when the entire line box is selec
ted as an optimization. | 240 } else { // Avoid computing the font width when the entire line box is selec
ted as an optimization. |
241 r = LayoutRect(enclosingIntRect(LayoutRect(startingPoint, LayoutSize(m_l
ogicalWidth, selHeight)))); | 241 r = LayoutRect(enclosingIntRect(LayoutRect(startingPoint, LayoutSize(m_l
ogicalWidth, selHeight)))); |
242 } | 242 } |
243 | 243 |
244 LayoutUnit logicalWidth = r.width(); | 244 LayoutUnit logicalWidth = r.width(); |
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483 return 0; | 483 return 0; |
484 | 484 |
485 if (lineOffset - logicalLeft() > logicalWidth()) | 485 if (lineOffset - logicalLeft() > logicalWidth()) |
486 return isLeftToRightDirection() ? len() : 0; | 486 return isLeftToRightDirection() ? len() : 0; |
487 if (lineOffset - logicalLeft() < 0) | 487 if (lineOffset - logicalLeft() < 0) |
488 return isLeftToRightDirection() ? 0 : len(); | 488 return isLeftToRightDirection() ? 0 : len(); |
489 | 489 |
490 LineLayoutText text = getLineLayoutItem(); | 490 LineLayoutText text = getLineLayoutItem(); |
491 const ComputedStyle& style = text.styleRef(isFirstLineStyle()); | 491 const ComputedStyle& style = text.styleRef(isFirstLineStyle()); |
492 const Font& font = style.font(); | 492 const Font& font = style.font(); |
493 return font.offsetForPosition(constructTextRun(style, font), (lineOffset - l
ogicalLeft()).toFloat(), includePartialGlyphs); | 493 return font.offsetForPosition(constructTextRun(style), (lineOffset - logical
Left()).toFloat(), includePartialGlyphs); |
494 } | 494 } |
495 | 495 |
496 LayoutUnit InlineTextBox::positionForOffset(int offset) const | 496 LayoutUnit InlineTextBox::positionForOffset(int offset) const |
497 { | 497 { |
498 ASSERT(offset >= m_start); | 498 ASSERT(offset >= m_start); |
499 ASSERT(offset <= m_start + m_len); | 499 ASSERT(offset <= m_start + m_len); |
500 | 500 |
501 if (isLineBreak()) | 501 if (isLineBreak()) |
502 return logicalLeft(); | 502 return logicalLeft(); |
503 | 503 |
504 LineLayoutText text = getLineLayoutItem(); | 504 LineLayoutText text = getLineLayoutItem(); |
505 const ComputedStyle& styleToUse = text.styleRef(isFirstLineStyle()); | 505 const ComputedStyle& styleToUse = text.styleRef(isFirstLineStyle()); |
506 const Font& font = styleToUse.font(); | 506 const Font& font = styleToUse.font(); |
507 int from = !isLeftToRightDirection() ? offset - m_start : 0; | 507 int from = !isLeftToRightDirection() ? offset - m_start : 0; |
508 int to = !isLeftToRightDirection() ? m_len : offset - m_start; | 508 int to = !isLeftToRightDirection() ? m_len : offset - m_start; |
509 // FIXME: Do we need to add rightBearing here? | 509 // FIXME: Do we need to add rightBearing here? |
510 return LayoutUnit(font.selectionRectForText(constructTextRun(styleToUse, fon
t), IntPoint(logicalLeft(), 0), 0, from, to).maxX()); | 510 return LayoutUnit(font.selectionRectForText(constructTextRun(styleToUse), In
tPoint(logicalLeft(), 0), 0, from, to).maxX()); |
511 } | 511 } |
512 | 512 |
513 bool InlineTextBox::containsCaretOffset(int offset) const | 513 bool InlineTextBox::containsCaretOffset(int offset) const |
514 { | 514 { |
515 // Offsets before the box are never "in". | 515 // Offsets before the box are never "in". |
516 if (offset < m_start) | 516 if (offset < m_start) |
517 return false; | 517 return false; |
518 | 518 |
519 int pastEnd = m_start + m_len; | 519 int pastEnd = m_start + m_len; |
520 | 520 |
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538 { | 538 { |
539 if (!m_len) | 539 if (!m_len) |
540 return; | 540 return; |
541 | 541 |
542 FontCachePurgePreventer fontCachePurgePreventer; | 542 FontCachePurgePreventer fontCachePurgePreventer; |
543 ASSERT(getLineLayoutItem().text()); | 543 ASSERT(getLineLayoutItem().text()); |
544 | 544 |
545 const ComputedStyle& styleToUse = getLineLayoutItem().styleRef(isFirstLineSt
yle()); | 545 const ComputedStyle& styleToUse = getLineLayoutItem().styleRef(isFirstLineSt
yle()); |
546 const Font& font = styleToUse.font(); | 546 const Font& font = styleToUse.font(); |
547 | 547 |
548 TextRun textRun = constructTextRun(styleToUse, font); | 548 TextRun textRun = constructTextRun(styleToUse); |
549 Vector<CharacterRange> ranges = font.individualCharacterRanges(textRun); | 549 Vector<CharacterRange> ranges = font.individualCharacterRanges(textRun); |
550 DCHECK_EQ(ranges.size(), m_len); | 550 DCHECK_EQ(ranges.size(), m_len); |
551 | 551 |
552 widths.resize(ranges.size()); | 552 widths.resize(ranges.size()); |
553 for (unsigned i = 0; i < ranges.size(); i++) | 553 for (unsigned i = 0; i < ranges.size(); i++) |
554 widths[i] = ranges[i].width(); | 554 widths[i] = ranges[i].width(); |
555 } | 555 } |
556 | 556 |
557 TextRun InlineTextBox::constructTextRun(const ComputedStyle& style, const Font&
font, StringBuilder* charactersWithHyphen) const | 557 TextRun InlineTextBox::constructTextRun(const ComputedStyle& style, StringBuilde
r* charactersWithHyphen) const |
558 { | 558 { |
559 ASSERT(getLineLayoutItem().text()); | 559 ASSERT(getLineLayoutItem().text()); |
560 | 560 |
561 String string = getLineLayoutItem().text(); | 561 String string = getLineLayoutItem().text(); |
562 unsigned startPos = start(); | 562 unsigned startPos = start(); |
563 unsigned length = len(); | 563 unsigned length = len(); |
564 return constructTextRun(style, font, StringView(string, startPos, length), g
etLineLayoutItem().textLength() - startPos, charactersWithHyphen); | 564 return constructTextRun(style, StringView(string, startPos, length), getLine
LayoutItem().textLength() - startPos, charactersWithHyphen); |
565 } | 565 } |
566 | 566 |
567 TextRun InlineTextBox::constructTextRun(const ComputedStyle& style, const Font&
font, StringView string, int maximumLength, StringBuilder* charactersWithHyphen)
const | 567 TextRun InlineTextBox::constructTextRun(const ComputedStyle& style, StringView s
tring, int maximumLength, StringBuilder* charactersWithHyphen) const |
568 { | 568 { |
569 if (charactersWithHyphen) { | 569 if (charactersWithHyphen) { |
570 const AtomicString& hyphenString = style.hyphenString(); | 570 const AtomicString& hyphenString = style.hyphenString(); |
571 charactersWithHyphen->reserveCapacity(string.length() + hyphenString.len
gth()); | 571 charactersWithHyphen->reserveCapacity(string.length() + hyphenString.len
gth()); |
572 charactersWithHyphen->append(string); | 572 charactersWithHyphen->append(string); |
573 charactersWithHyphen->append(hyphenString); | 573 charactersWithHyphen->append(hyphenString); |
574 string = charactersWithHyphen->toString(); | 574 string = charactersWithHyphen->toString(); |
575 maximumLength = string.length(); | 575 maximumLength = string.length(); |
576 } | 576 } |
577 | 577 |
578 ASSERT(maximumLength >= static_cast<int>(string.length())); | 578 ASSERT(maximumLength >= static_cast<int>(string.length())); |
579 | 579 |
580 TextRun run(string, textPos().toFloat(), expansion(), expansionBehavior(), d
irection(), dirOverride() || style.rtlOrdering() == VisualOrder); | 580 TextRun run(string, textPos().toFloat(), expansion(), expansionBehavior(), d
irection(), dirOverride() || style.rtlOrdering() == VisualOrder); |
581 run.setTabSize(!style.collapseWhiteSpace(), style.getTabSize()); | 581 run.setTabSize(!style.collapseWhiteSpace(), style.getTabSize()); |
582 run.setTextJustify(style.getTextJustify()); | 582 run.setTextJustify(style.getTextJustify()); |
583 | 583 |
584 // Propagate the maximum length of the characters buffer to the TextRun, eve
n when we're only processing a substring. | 584 // Propagate the maximum length of the characters buffer to the TextRun, eve
n when we're only processing a substring. |
585 run.setCharactersLength(maximumLength); | 585 run.setCharactersLength(maximumLength); |
586 ASSERT(run.charactersLength() >= run.length()); | 586 ASSERT(run.charactersLength() >= run.length()); |
587 return run; | 587 return run; |
588 } | 588 } |
589 | 589 |
590 TextRun InlineTextBox::constructTextRunForInspector(const ComputedStyle& style,
const Font& font) const | 590 TextRun InlineTextBox::constructTextRunForInspector(const ComputedStyle& style)
const |
591 { | 591 { |
592 return InlineTextBox::constructTextRun(style, font); | 592 return InlineTextBox::constructTextRun(style); |
593 } | 593 } |
594 | 594 |
595 const char* InlineTextBox::boxName() const | 595 const char* InlineTextBox::boxName() const |
596 { | 596 { |
597 return "InlineTextBox"; | 597 return "InlineTextBox"; |
598 } | 598 } |
599 | 599 |
600 String InlineTextBox::debugName() const | 600 String InlineTextBox::debugName() const |
601 { | 601 { |
602 return String(boxName()) + " '" + text() + "'"; | 602 return String(boxName()) + " '" + text() + "'"; |
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621 printedCharacters = fprintf(stderr, "\t%s %p", obj.name(), obj.debugPointer(
)); | 621 printedCharacters = fprintf(stderr, "\t%s %p", obj.name(), obj.debugPointer(
)); |
622 const int layoutObjectCharacterOffset = 75; | 622 const int layoutObjectCharacterOffset = 75; |
623 for (; printedCharacters < layoutObjectCharacterOffset; printedCharacters++) | 623 for (; printedCharacters < layoutObjectCharacterOffset; printedCharacters++) |
624 fputc(' ', stderr); | 624 fputc(' ', stderr); |
625 fprintf(stderr, "(%d,%d) \"%s\"\n", start(), start() + len(), value.utf8().d
ata()); | 625 fprintf(stderr, "(%d,%d) \"%s\"\n", start(), start() + len(), value.utf8().d
ata()); |
626 } | 626 } |
627 | 627 |
628 #endif | 628 #endif |
629 | 629 |
630 } // namespace blink | 630 } // namespace blink |
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