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Diffstat (limited to 'WebCore/rendering/RenderListMarker.cpp')
-rw-r--r-- | WebCore/rendering/RenderListMarker.cpp | 906 |
1 files changed, 906 insertions, 0 deletions
diff --git a/WebCore/rendering/RenderListMarker.cpp b/WebCore/rendering/RenderListMarker.cpp new file mode 100644 index 0000000..b2937b9 --- /dev/null +++ b/WebCore/rendering/RenderListMarker.cpp @@ -0,0 +1,906 @@ +/* + * Copyright (C) 1999 Lars Knoll (knoll@kde.org) + * (C) 1999 Antti Koivisto (koivisto@kde.org) + * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. + * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + +#include "config.h" +#include "RenderListMarker.h" + +#include "CachedImage.h" +#include "CharacterNames.h" +#include "Document.h" +#include "GraphicsContext.h" +#include "ListMarkerBox.h" +#include "RenderLayer.h" +#include "RenderListItem.h" +#include "RenderView.h" + +using namespace std; +using namespace WTF; +using namespace Unicode; + +namespace WebCore { + +const int cMarkerPadding = 7; + +static String toRoman(int number, bool upper) +{ + // FIXME: CSS3 describes how to make this work for much larger numbers, + // using overbars and special characters. It also specifies the characters + // in the range U+2160 to U+217F instead of standard ASCII ones. + if (number < 1 || number > 3999) + return String::number(number); + + const int lettersSize = 12; // big enough for three each of I, X, C, and M + UChar letters[lettersSize]; + + int length = 0; + const UChar ldigits[] = { 'i', 'v', 'x', 'l', 'c', 'd', 'm' }; + const UChar udigits[] = { 'I', 'V', 'X', 'L', 'C', 'D', 'M' }; + const UChar* digits = upper ? udigits : ldigits; + int d = 0; + do { + int num = number % 10; + if (num % 5 < 4) + for (int i = num % 5; i > 0; i--) + letters[lettersSize - ++length] = digits[d]; + if (num >= 4 && num <= 8) + letters[lettersSize - ++length] = digits[d + 1]; + if (num == 9) + letters[lettersSize - ++length] = digits[d + 2]; + if (num % 5 == 4) + letters[lettersSize - ++length] = digits[d]; + number /= 10; + d += 2; + } while (number); + + ASSERT(length <= lettersSize); + return String(&letters[lettersSize - length], length); +} + +static String toAlphabetic(int number, const UChar* alphabet, int alphabetSize) +{ + ASSERT(alphabetSize >= 10); + + if (number < 1) + return String::number(number); + + const int lettersSize = 10; // big enough for a 32-bit int, with a 10-letter alphabet + UChar letters[lettersSize]; + + --number; + letters[lettersSize - 1] = alphabet[number % alphabetSize]; + int length = 1; + while ((number /= alphabetSize) > 0) + letters[lettersSize - ++length] = alphabet[number % alphabetSize - 1]; + + ASSERT(length <= lettersSize); + return String(&letters[lettersSize - length], length); +} + +static int toHebrewUnder1000(int number, UChar letters[5]) +{ + // FIXME: CSS3 mentions various refinements not implemented here. + // FIXME: Should take a look at Mozilla's HebrewToText function (in nsBulletFrame). + ASSERT(number >= 0 && number < 1000); + int length = 0; + int fourHundreds = number / 400; + for (int i = 0; i < fourHundreds; i++) + letters[length++] = 1511 + 3; + number %= 400; + if (number / 100) + letters[length++] = 1511 + (number / 100) - 1; + number %= 100; + if (number == 15 || number == 16) { + letters[length++] = 1487 + 9; + letters[length++] = 1487 + number - 9; + } else { + if (int tens = number / 10) { + static const UChar hebrewTens[9] = { 1497, 1499, 1500, 1502, 1504, 1505, 1506, 1508, 1510 }; + letters[length++] = hebrewTens[tens - 1]; + } + if (int ones = number % 10) + letters[length++] = 1487 + ones; + } + ASSERT(length <= 5); + return length; +} + +static String toHebrew(int number) +{ + // FIXME: CSS3 mentions ways to make this work for much larger numbers. + if (number < 0 || number > 999999) + return String::number(number); + + if (number == 0) { + static const UChar hebrewZero[3] = { 0x05D0, 0x05E4, 0x05E1 }; + return String(hebrewZero, 3); + } + + const int lettersSize = 11; // big enough for two 5-digit sequences plus a quote mark between + UChar letters[lettersSize]; + + int length; + if (number < 1000) + length = 0; + else { + length = toHebrewUnder1000(number / 1000, letters); + letters[length++] = '\''; + number = number % 1000; + } + length += toHebrewUnder1000(number, letters + length); + + ASSERT(length <= lettersSize); + return String(letters, length); +} + +static int toArmenianUnder10000(int number, bool upper, bool addCircumflex, UChar letters[9]) +{ + ASSERT(number >= 0 && number < 10000); + int length = 0; + + int lowerOffset = upper ? 0 : 0x0030; + + if (int thousands = number / 1000) + if (thousands == 7) { + letters[length++] = 0x0548 + lowerOffset; + letters[length++] = 0x0552 + lowerOffset; + if (addCircumflex) + letters[length++] = 0x0302; + } else { + letters[length++] = (0x054C - 1 + lowerOffset) + thousands; + if (addCircumflex) + letters[length++] = 0x0302; + } + + if (int hundreds = (number / 100) % 10) { + letters[length++] = (0x0543 - 1 + lowerOffset) + hundreds; + if (addCircumflex) + letters[length++] = 0x0302; + } + + if (int tens = (number / 10) % 10) { + letters[length++] = (0x053A - 1 + lowerOffset) + tens; + if (addCircumflex) + letters[length++] = 0x0302; + } + + if (int ones = number % 10) { + letters[length++] = (0x531 - 1 + lowerOffset) + ones; + if (addCircumflex) + letters[length++] = 0x0302; + } + + return length; +} + +static String toArmenian(int number, bool upper) +{ + if (number < 1 || number > 99999999) + return String::number(number); + + const int lettersSize = 18; // twice what toArmenianUnder10000 needs + UChar letters[lettersSize]; + + int length = toArmenianUnder10000(number / 10000, upper, true, letters); + length += toArmenianUnder10000(number % 10000, upper, false, letters + length); + + ASSERT(length <= lettersSize); + return String(letters, length); +} + +static String toGeorgian(int number) +{ + if (number < 1 || number > 19999) + return String::number(number); + + const int lettersSize = 5; + UChar letters[lettersSize]; + + int length = 0; + + if (number > 9999) + letters[length++] = 0x10F5; + + if (int thousands = (number / 1000) % 10) { + static const UChar georgianThousands[9] = { + 0x10E9, 0x10EA, 0x10EB, 0x10EC, 0x10ED, 0x10EE, 0x10F4, 0x10EF, 0x10F0 + }; + letters[length++] = georgianThousands[thousands - 1]; + } + + if (int hundreds = (number / 100) % 10) { + static const UChar georgianHundreds[9] = { + 0x10E0, 0x10E1, 0x10E2, 0x10F3, 0x10E4, 0x10E5, 0x10E6, 0x10E7, 0x10E8 + }; + letters[length++] = georgianHundreds[hundreds - 1]; + } + + if (int tens = (number / 10) % 10) { + static const UChar georgianTens[9] = { + 0x10D8, 0x10D9, 0x10DA, 0x10DB, 0x10DC, 0x10F2, 0x10DD, 0x10DE, 0x10DF + }; + letters[length++] = georgianTens[tens - 1]; + } + + if (int ones = number % 10) { + static const UChar georgianOnes[9] = { + 0x10D0, 0x10D1, 0x10D2, 0x10D3, 0x10D4, 0x10D5, 0x10D6, 0x10F1, 0x10D7 + }; + letters[length++] = georgianOnes[ones - 1]; + } + + ASSERT(length <= lettersSize); + return String(letters, length); +} + +// The table uses the order from the CSS3 specification: +// first 3 group markers, then 3 digit markers, then ten digits. +static String toCJKIdeographic(int number, const UChar table[16]) +{ + if (number < 0) + return String::number(number); + + enum AbstractCJKChar { + noChar, + secondGroupMarker, thirdGroupMarker, fourthGroupMarker, + secondDigitMarker, thirdDigitMarker, fourthDigitMarker, + digit0, digit1, digit2, digit3, digit4, + digit5, digit6, digit7, digit8, digit9 + }; + + if (number == 0) + return String(&table[digit0 - 1], 1); + + const int groupLength = 8; // 4 digits, 3 digit markers, and a group marker + const int bufferLength = 4 * groupLength; + AbstractCJKChar buffer[bufferLength] = { noChar }; + + for (int i = 0; i < 4; ++i) { + int groupValue = number % 10000; + number /= 10000; + + // Process least-significant group first, but put it in the buffer last. + AbstractCJKChar* group = &buffer[(3 - i) * groupLength]; + + if (groupValue && i) + group[7] = static_cast<AbstractCJKChar>(secondGroupMarker - 1 + i); + + // Put in the four digits and digit markers for any non-zero digits. + group[6] = static_cast<AbstractCJKChar>(digit0 + (groupValue % 10)); + if (number != 0 || groupValue > 9) { + int digitValue = ((groupValue / 10) % 10); + group[4] = static_cast<AbstractCJKChar>(digit0 + digitValue); + if (digitValue) + group[5] = secondDigitMarker; + } + if (number != 0 || groupValue > 99) { + int digitValue = ((groupValue / 100) % 10); + group[2] = static_cast<AbstractCJKChar>(digit0 + digitValue); + if (digitValue) + group[3] = thirdDigitMarker; + } + if (number != 0 || groupValue > 999) { + int digitValue = groupValue / 1000; + group[0] = static_cast<AbstractCJKChar>(digit0 + digitValue); + if (digitValue) + group[1] = fourthDigitMarker; + } + + // Remove the tens digit, but leave the marker, for any group that has + // a value of less than 20. + if (groupValue < 20) { + ASSERT(group[4] == noChar || group[4] == digit0 || group[4] == digit1); + group[4] = noChar; + } + + if (number == 0) + break; + } + + // Convert into characters, omitting consecutive runs of digit0 and + // any trailing digit0. + int length = 0; + UChar characters[bufferLength]; + AbstractCJKChar last = noChar; + for (int i = 0; i < bufferLength; ++i) { + AbstractCJKChar a = buffer[i]; + if (a != noChar) { + if (a != digit0 || last != digit0) + characters[length++] = table[a - 1]; + last = a; + } + } + if (last == digit0) + --length; + + return String(characters, length); +} + +String listMarkerText(EListStyleType type, int value) +{ + switch (type) { + case LNONE: + return ""; + + // We use the same characters for text security. + // See RenderText::setInternalString. + case CIRCLE: + return String(&whiteBullet, 1); + case DISC: + return String(&bullet, 1); + case SQUARE: + // The CSS 2.1 test suite uses U+25EE BLACK MEDIUM SMALL SQUARE + // instead, but I think this looks better. + return String(&blackSquare, 1); + + case LDECIMAL: + return String::number(value); + case DECIMAL_LEADING_ZERO: + if (value < -9 || value > 9) + return String::number(value); + if (value < 0) + return "-0" + String::number(-value); // -01 to -09 + return "0" + String::number(value); // 00 to 09 + + case LOWER_ALPHA: + case LOWER_LATIN: { + static const UChar lowerLatinAlphabet[26] = { + 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', + 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' + }; + return toAlphabetic(value, lowerLatinAlphabet, 26); + } + case UPPER_ALPHA: + case UPPER_LATIN: { + static const UChar upperLatinAlphabet[26] = { + 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', + 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' + }; + return toAlphabetic(value, upperLatinAlphabet, 26); + } + case LOWER_GREEK: { + static const UChar lowerGreekAlphabet[24] = { + 0x03B1, 0x03B2, 0x03B3, 0x03B4, 0x03B5, 0x03B6, 0x03B7, 0x03B8, + 0x03B9, 0x03BA, 0x03BB, 0x03BC, 0x03BD, 0x03BE, 0x03BF, 0x03C0, + 0x03C1, 0x03C3, 0x03C4, 0x03C5, 0x03C6, 0x03C7, 0x03C8, 0x03C9 + }; + return toAlphabetic(value, lowerGreekAlphabet, 24); + } + + case HIRAGANA: { + // FIXME: This table comes from the CSS3 draft, and is probably + // incorrect, given the comments in that draft. + static const UChar hiraganaAlphabet[48] = { + 0x3042, 0x3044, 0x3046, 0x3048, 0x304A, 0x304B, 0x304D, 0x304F, + 0x3051, 0x3053, 0x3055, 0x3057, 0x3059, 0x305B, 0x305D, 0x305F, + 0x3061, 0x3064, 0x3066, 0x3068, 0x306A, 0x306B, 0x306C, 0x306D, + 0x306E, 0x306F, 0x3072, 0x3075, 0x3078, 0x307B, 0x307E, 0x307F, + 0x3080, 0x3081, 0x3082, 0x3084, 0x3086, 0x3088, 0x3089, 0x308A, + 0x308B, 0x308C, 0x308D, 0x308F, 0x3090, 0x3091, 0x3092, 0x3093 + }; + return toAlphabetic(value, hiraganaAlphabet, 48); + } + case HIRAGANA_IROHA: { + // FIXME: This table comes from the CSS3 draft, and is probably + // incorrect, given the comments in that draft. + static const UChar hiraganaIrohaAlphabet[47] = { + 0x3044, 0x308D, 0x306F, 0x306B, 0x307B, 0x3078, 0x3068, 0x3061, + 0x308A, 0x306C, 0x308B, 0x3092, 0x308F, 0x304B, 0x3088, 0x305F, + 0x308C, 0x305D, 0x3064, 0x306D, 0x306A, 0x3089, 0x3080, 0x3046, + 0x3090, 0x306E, 0x304A, 0x304F, 0x3084, 0x307E, 0x3051, 0x3075, + 0x3053, 0x3048, 0x3066, 0x3042, 0x3055, 0x304D, 0x3086, 0x3081, + 0x307F, 0x3057, 0x3091, 0x3072, 0x3082, 0x305B, 0x3059 + }; + return toAlphabetic(value, hiraganaIrohaAlphabet, 47); + } + case KATAKANA: { + // FIXME: This table comes from the CSS3 draft, and is probably + // incorrect, given the comments in that draft. + static const UChar katakanaAlphabet[48] = { + 0x30A2, 0x30A4, 0x30A6, 0x30A8, 0x30AA, 0x30AB, 0x30AD, 0x30AF, + 0x30B1, 0x30B3, 0x30B5, 0x30B7, 0x30B9, 0x30BB, 0x30BD, 0x30BF, + 0x30C1, 0x30C4, 0x30C6, 0x30C8, 0x30CA, 0x30CB, 0x30CC, 0x30CD, + 0x30CE, 0x30CF, 0x30D2, 0x30D5, 0x30D8, 0x30DB, 0x30DE, 0x30DF, + 0x30E0, 0x30E1, 0x30E2, 0x30E4, 0x30E6, 0x30E8, 0x30E9, 0x30EA, + 0x30EB, 0x30EC, 0x30ED, 0x30EF, 0x30F0, 0x30F1, 0x30F2, 0x30F3 + }; + return toAlphabetic(value, katakanaAlphabet, 48); + } + case KATAKANA_IROHA: { + // FIXME: This table comes from the CSS3 draft, and is probably + // incorrect, given the comments in that draft. + static const UChar katakanaIrohaAlphabet[47] = { + 0x30A4, 0x30ED, 0x30CF, 0x30CB, 0x30DB, 0x30D8, 0x30C8, 0x30C1, + 0x30EA, 0x30CC, 0x30EB, 0x30F2, 0x30EF, 0x30AB, 0x30E8, 0x30BF, + 0x30EC, 0x30BD, 0x30C4, 0x30CD, 0x30CA, 0x30E9, 0x30E0, 0x30A6, + 0x30F0, 0x30CE, 0x30AA, 0x30AF, 0x30E4, 0x30DE, 0x30B1, 0x30D5, + 0x30B3, 0x30A8, 0x30C6, 0x30A2, 0x30B5, 0x30AD, 0x30E6, 0x30E1, + 0x30DF, 0x30B7, 0x30F1, 0x30D2, 0x30E2, 0x30BB, 0x30B9 + }; + return toAlphabetic(value, katakanaIrohaAlphabet, 47); + } + + case CJK_IDEOGRAPHIC: { + static const UChar traditionalChineseInformalTable[16] = { + 0x842C, 0x5104, 0x5146, + 0x5341, 0x767E, 0x5343, + 0x96F6, 0x4E00, 0x4E8C, 0x4E09, 0x56DB, + 0x4E94, 0x516D, 0x4E03, 0x516B, 0x4E5D + }; + return toCJKIdeographic(value, traditionalChineseInformalTable); + } + + case LOWER_ROMAN: + return toRoman(value, false); + case UPPER_ROMAN: + return toRoman(value, true); + + case ARMENIAN: + // CSS3 says "armenian" means "lower-armenian". + // But the CSS2.1 test suite contains uppercase test results for "armenian", + // so we'll match the test suite. + return toArmenian(value, true); + case GEORGIAN: + return toGeorgian(value); + case HEBREW: + return toHebrew(value); + } + + ASSERT_NOT_REACHED(); + return ""; +} + +RenderListMarker::RenderListMarker(RenderListItem* item) + : RenderBox(item->document()) + , m_listItem(item) + , m_selectionState(SelectionNone) +{ + // init RenderObject attributes + setInline(true); // our object is Inline + setReplaced(true); // pretend to be replaced +} + +RenderListMarker::~RenderListMarker() +{ + if (m_image) + m_image->removeClient(this); +} + +void RenderListMarker::styleWillChange(RenderStyle::Diff diff, const RenderStyle* newStyle) +{ + if (style() && (newStyle->listStylePosition() != style()->listStylePosition() || newStyle->listStyleType() != style()->listStyleType())) + setNeedsLayoutAndPrefWidthsRecalc(); + + RenderBox::styleWillChange(diff, newStyle); +} + +void RenderListMarker::styleDidChange(RenderStyle::Diff diff, const RenderStyle* oldStyle) +{ + RenderBox::styleDidChange(diff, oldStyle); + + if (m_image != style()->listStyleImage()) { + if (m_image) + m_image->removeClient(this); + m_image = style()->listStyleImage(); + if (m_image) + m_image->addClient(this); + } +} + +InlineBox* RenderListMarker::createInlineBox(bool, bool isRootLineBox, bool) +{ + ASSERT(!isRootLineBox); + ListMarkerBox* box = new (renderArena()) ListMarkerBox(this); + m_inlineBoxWrapper = box; + return box; +} + +bool RenderListMarker::isImage() const +{ + return m_image && !m_image->errorOccurred(); +} + +void RenderListMarker::paint(PaintInfo& paintInfo, int tx, int ty) +{ + if (paintInfo.phase != PaintPhaseForeground) + return; + + if (style()->visibility() != VISIBLE) + return; + + IntRect marker = getRelativeMarkerRect(); + marker.move(tx, ty); + + IntRect box(tx + m_x, ty + m_y, m_width, m_height); + + if (box.y() > paintInfo.rect.bottom() || box.y() + box.height() < paintInfo.rect.y()) + return; + + if (hasBoxDecorations()) + paintBoxDecorations(paintInfo, box.x(), box.y()); + + GraphicsContext* context = paintInfo.context; + context->setFont(style()->font()); + + if (isImage()) { +#if PLATFORM(MAC) + if (style()->highlight() != nullAtom && !paintInfo.context->paintingDisabled()) + paintCustomHighlight(tx, ty, style()->highlight(), true); +#endif + context->drawImage(m_image->image(this, marker.size()), marker.location()); + if (selectionState() != SelectionNone) + context->fillRect(selectionRect(), selectionBackgroundColor()); + return; + } + +#if PLATFORM(MAC) + // FIXME: paint gap between marker and list item proper + if (style()->highlight() != nullAtom && !paintInfo.context->paintingDisabled()) + paintCustomHighlight(tx, ty, style()->highlight(), true); +#endif + + if (selectionState() != SelectionNone) + context->fillRect(selectionRect(), selectionBackgroundColor()); + + const Color color(style()->color()); + context->setStrokeColor(color); + context->setStrokeStyle(SolidStroke); + context->setStrokeThickness(1.0f); + context->setFillColor(color); + + switch (style()->listStyleType()) { + case DISC: + context->drawEllipse(marker); + return; + case CIRCLE: + context->setFillColor(Color::transparent); + context->drawEllipse(marker); + return; + case SQUARE: + context->drawRect(marker); + return; + case LNONE: + return; + case ARMENIAN: + case CJK_IDEOGRAPHIC: + case DECIMAL_LEADING_ZERO: + case GEORGIAN: + case HEBREW: + case HIRAGANA: + case HIRAGANA_IROHA: + case KATAKANA: + case KATAKANA_IROHA: + case LDECIMAL: + case LOWER_ALPHA: + case LOWER_GREEK: + case LOWER_LATIN: + case LOWER_ROMAN: + case UPPER_ALPHA: + case UPPER_LATIN: + case UPPER_ROMAN: + break; + } + if (m_text.isEmpty()) + return; + + TextRun textRun(m_text); + + // Text is not arbitrary. We can judge whether it's RTL from the first character, + // and we only need to handle the direction RightToLeft for now. + bool textNeedsReversing = direction(m_text[0]) == RightToLeft; + Vector<UChar> reversedText; + if (textNeedsReversing) { + int length = m_text.length(); + reversedText.grow(length); + for (int i = 0; i < length; ++i) + reversedText[length - i - 1] = m_text[i]; + textRun = TextRun(reversedText.data(), length); + } + + const Font& font = style()->font(); + if (style()->direction() == LTR) { + int width = font.width(textRun); + context->drawText(textRun, marker.location()); + const UChar periodSpace[2] = { '.', ' ' }; + context->drawText(TextRun(periodSpace, 2), marker.location() + IntSize(width, 0)); + } else { + const UChar spacePeriod[2] = { ' ', '.' }; + TextRun spacePeriodRun(spacePeriod, 2); + int width = font.width(spacePeriodRun); + context->drawText(spacePeriodRun, marker.location()); + context->drawText(textRun, marker.location() + IntSize(width, 0)); + } +} + +void RenderListMarker::layout() +{ + ASSERT(needsLayout()); + ASSERT(!prefWidthsDirty()); + + if (isImage()) { + m_width = m_image->imageSize(this, style()->effectiveZoom()).width(); + m_height = m_image->imageSize(this, style()->effectiveZoom()).height(); + } else { + m_width = minPrefWidth(); + m_height = style()->font().height(); + } + + m_marginLeft = m_marginRight = 0; + + Length leftMargin = style()->marginLeft(); + Length rightMargin = style()->marginRight(); + if (leftMargin.isFixed()) + m_marginLeft = leftMargin.value(); + if (rightMargin.isFixed()) + m_marginRight = rightMargin.value(); + + setNeedsLayout(false); +} + +void RenderListMarker::imageChanged(WrappedImagePtr o) +{ + // A list marker can't have a background or border image, so no need to call the base class method. + if (o != m_image->data()) + return; + + if (m_width != m_image->imageSize(this, style()->effectiveZoom()).width() || m_height != m_image->imageSize(this, style()->effectiveZoom()).height() || m_image->errorOccurred()) + setNeedsLayoutAndPrefWidthsRecalc(); + else + repaint(); +} + +void RenderListMarker::calcPrefWidths() +{ + ASSERT(prefWidthsDirty()); + + m_text = ""; + + const Font& font = style()->font(); + + if (isImage()) { + // FIXME: This is a somewhat arbitrary width. Generated images for markers really won't become particularly useful + // until we support the CSS3 marker pseudoclass to allow control over the width and height of the marker box. + int bulletWidth = font.ascent() / 2; + m_image->setImageContainerSize(IntSize(bulletWidth, bulletWidth)); + m_minPrefWidth = m_maxPrefWidth = m_image->imageSize(this, style()->effectiveZoom()).width(); + setPrefWidthsDirty(false); + updateMargins(); + return; + } + + int width = 0; + EListStyleType type = style()->listStyleType(); + switch (type) { + case LNONE: + break; + case CIRCLE: + case DISC: + case SQUARE: + m_text = listMarkerText(type, 0); // value is ignored for these types + width = (font.ascent() * 2 / 3 + 1) / 2 + 2; + break; + case ARMENIAN: + case CJK_IDEOGRAPHIC: + case DECIMAL_LEADING_ZERO: + case GEORGIAN: + case HEBREW: + case HIRAGANA: + case HIRAGANA_IROHA: + case KATAKANA: + case KATAKANA_IROHA: + case LDECIMAL: + case LOWER_ALPHA: + case LOWER_GREEK: + case LOWER_LATIN: + case LOWER_ROMAN: + case UPPER_ALPHA: + case UPPER_LATIN: + case UPPER_ROMAN: + m_text = listMarkerText(type, m_listItem->value()); + if (m_text.isEmpty()) + width = 0; + else { + int itemWidth = font.width(m_text); + const UChar periodSpace[2] = { '.', ' ' }; + int periodSpaceWidth = font.width(TextRun(periodSpace, 2)); + width = itemWidth + periodSpaceWidth; + } + break; + } + + m_minPrefWidth = width; + m_maxPrefWidth = width; + + setPrefWidthsDirty(false); + + updateMargins(); +} + +void RenderListMarker::updateMargins() +{ + const Font& font = style()->font(); + + int marginLeft = 0; + int marginRight = 0; + + if (isInside()) { + if (isImage()) { + if (style()->direction() == LTR) + marginRight = cMarkerPadding; + else + marginLeft = cMarkerPadding; + } else switch (style()->listStyleType()) { + case DISC: + case CIRCLE: + case SQUARE: + if (style()->direction() == LTR) { + marginLeft = -1; + marginRight = font.ascent() - minPrefWidth() + 1; + } else { + marginLeft = font.ascent() - minPrefWidth() + 1; + marginRight = -1; + } + break; + default: + break; + } + } else { + if (style()->direction() == LTR) { + if (isImage()) + marginLeft = -minPrefWidth() - cMarkerPadding; + else { + int offset = font.ascent() * 2 / 3; + switch (style()->listStyleType()) { + case DISC: + case CIRCLE: + case SQUARE: + marginLeft = -offset - cMarkerPadding - 1; + break; + case LNONE: + break; + default: + marginLeft = m_text.isEmpty() ? 0 : -minPrefWidth() - offset / 2; + } + } + } else { + if (isImage()) + marginLeft = cMarkerPadding; + else { + int offset = font.ascent() * 2 / 3; + switch (style()->listStyleType()) { + case DISC: + case CIRCLE: + case SQUARE: + marginLeft = offset + cMarkerPadding + 1 - minPrefWidth(); + break; + case LNONE: + break; + default: + marginLeft = m_text.isEmpty() ? 0 : offset / 2; + } + } + } + marginRight = -marginLeft - minPrefWidth(); + } + + style()->setMarginLeft(Length(marginLeft, Fixed)); + style()->setMarginRight(Length(marginRight, Fixed)); +} + +int RenderListMarker::lineHeight(bool, bool) const +{ + if (!isImage()) + return m_listItem->lineHeight(false, true); + return height(); +} + +int RenderListMarker::baselinePosition(bool, bool) const +{ + if (!isImage()) { + const Font& font = style()->font(); + return font.ascent() + (lineHeight(false) - font.height())/2; + } + return height(); +} + +bool RenderListMarker::isInside() const +{ + return m_listItem->notInList() || style()->listStylePosition() == INSIDE; +} + +IntRect RenderListMarker::getRelativeMarkerRect() +{ + if (isImage()) + return IntRect(m_x, m_y, m_image->imageSize(this, style()->effectiveZoom()).width(), m_image->imageSize(this, style()->effectiveZoom()).height()); + + switch (style()->listStyleType()) { + case DISC: + case CIRCLE: + case SQUARE: { + // FIXME: Are these particular rounding rules necessary? + const Font& font = style()->font(); + int ascent = font.ascent(); + int bulletWidth = (ascent * 2 / 3 + 1) / 2; + return IntRect(m_x + 1, m_y + 3 * (ascent - ascent * 2 / 3) / 2, bulletWidth, bulletWidth); + } + case LNONE: + return IntRect(); + case ARMENIAN: + case CJK_IDEOGRAPHIC: + case DECIMAL_LEADING_ZERO: + case GEORGIAN: + case HEBREW: + case HIRAGANA: + case HIRAGANA_IROHA: + case KATAKANA: + case KATAKANA_IROHA: + case LDECIMAL: + case LOWER_ALPHA: + case LOWER_GREEK: + case LOWER_LATIN: + case LOWER_ROMAN: + case UPPER_ALPHA: + case UPPER_LATIN: + case UPPER_ROMAN: + if (m_text.isEmpty()) + return IntRect(); + const Font& font = style()->font(); + int itemWidth = font.width(m_text); + const UChar periodSpace[2] = { '.', ' ' }; + int periodSpaceWidth = font.width(TextRun(periodSpace, 2)); + return IntRect(m_x, m_y + font.ascent(), itemWidth + periodSpaceWidth, font.height()); + } + + return IntRect(); +} + +void RenderListMarker::setSelectionState(SelectionState state) +{ + m_selectionState = state; + if (InlineBox* box = inlineBoxWrapper()) + if (RootInlineBox* root = box->root()) + root->setHasSelectedChildren(state != SelectionNone); + containingBlock()->setSelectionState(state); +} + +IntRect RenderListMarker::selectionRect(bool clipToVisibleContent) +{ + ASSERT(!needsLayout()); + + if (selectionState() == SelectionNone || !inlineBoxWrapper()) + return IntRect(); + + RootInlineBox* root = inlineBoxWrapper()->root(); + IntRect rect(0, root->selectionTop() - yPos(), width(), root->selectionHeight()); + + if (clipToVisibleContent) + computeAbsoluteRepaintRect(rect); + else { + int absx, absy; + absolutePosition(absx, absy); + rect.move(absx, absy); + } + + return rect; +} + +} // namespace WebCore |