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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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