C++ (Cpp) rawFont示例

示例#1

void SimpleFontData::platformCharWidthInit()
{
    if (!m_platformData.size())
        return;
    QRawFont rawFont(m_platformData.rawFont());
    m_avgCharWidth = rawFont.averageCharWidth();
    m_maxCharWidth = rawFont.maxCharWidth();
}

示例#2

文件： tst_qrawfont.cpp 项目： tsuibin/emscripten-qt

void tst_QRawFont::copyConstructor()
{
    QFETCH(QFont::HintingPreference, hintingPreference);

    {
        QString rawFontFamilyName;
        qreal rawFontPixelSize;
        qreal rawFontAscent;
        qreal rawFontDescent;
        int rawFontTableSize;

        QRawFont outerRawFont;
        {
            QRawFont rawFont(QString::fromLatin1(SRCDIR "testfont.ttf"), 11, hintingPreference);
            QVERIFY(rawFont.isValid());

            rawFontFamilyName = rawFont.familyName();
            rawFontPixelSize = rawFont.pixelSize();
            rawFontAscent = rawFont.ascent();
            rawFontDescent = rawFont.descent();
            rawFontTableSize = rawFont.fontTable("glyf").size();
            QVERIFY(rawFontTableSize > 0);

            {
                QRawFont otherRawFont(rawFont);
                QVERIFY(otherRawFont.isValid());
                QCOMPARE(otherRawFont.pixelSize(), rawFontPixelSize);
                QCOMPARE(otherRawFont.familyName(), rawFontFamilyName);
                QCOMPARE(otherRawFont.hintingPreference(), hintingPreference);
                QCOMPARE(otherRawFont.ascent(), rawFontAscent);
                QCOMPARE(otherRawFont.descent(), rawFontDescent);
                QCOMPARE(otherRawFont.fontTable("glyf").size(), rawFontTableSize);
            }

            {
                QRawFont otherRawFont = rawFont;
                QVERIFY(otherRawFont.isValid());
                QCOMPARE(otherRawFont.pixelSize(), rawFontPixelSize);
                QCOMPARE(otherRawFont.familyName(), rawFontFamilyName);
                QCOMPARE(otherRawFont.hintingPreference(), hintingPreference);
                QCOMPARE(otherRawFont.ascent(), rawFontAscent);
                QCOMPARE(otherRawFont.descent(), rawFontDescent);
                QCOMPARE(otherRawFont.fontTable("glyf").size(), rawFontTableSize);
            }

            outerRawFont = rawFont;
        }

        QVERIFY(outerRawFont.isValid());
        QCOMPARE(outerRawFont.pixelSize(), rawFontPixelSize);
        QCOMPARE(outerRawFont.familyName(), rawFontFamilyName);
        QCOMPARE(outerRawFont.hintingPreference(), hintingPreference);
        QCOMPARE(outerRawFont.ascent(), rawFontAscent);
        QCOMPARE(outerRawFont.descent(), rawFontDescent);
        QCOMPARE(outerRawFont.fontTable("glyf").size(), rawFontTableSize);
    }
}

示例#3

文件： SimpleFontDataQt.cpp 项目： dzhshf/WebKit

bool SimpleFontData::containsCharacters(const UChar* characters, int length) const
{
    QRawFont rawFont(m_platformData.rawFont());

    for (int i = 0; i < length; ++i) {
        if (!rawFont.supportsCharacter(static_cast<QChar>(characters[i])))
            return false;
    }

    return true;
}

示例#4

文件： SimpleFontDataQt.cpp 项目： dzhshf/WebKit

void SimpleFontData::platformInit()
{
    if (!m_platformData.size()) {
         m_fontMetrics.reset();
         m_avgCharWidth = 0;
         m_maxCharWidth = 0;
         return;
    }

#if HAVE(QRAWFONT)
    QRawFont rawFont(m_platformData.rawFont());
    float descent = rawFont.descent();
    float ascent = rawFont.ascent();
    float xHeight = rawFont.xHeight();
    float lineSpacing = ascent + descent + rawFont.leading();

    QVector<quint32> indexes = rawFont.glyphIndexesForString(QLatin1String(" "));
    QVector<QPointF> advances = rawFont.advancesForGlyphIndexes(indexes);
    float spaceWidth = advances.at(0).x();
#else
    QFontMetricsF fm(m_platformData.font());
    float descent = fm.descent();
    float ascent = fm.ascent();
    float xHeight = fm.xHeight();
    float lineSpacing = fm.lineSpacing();
    float spaceWidth = fm.width(QLatin1Char(' '));
#endif

#if !HAVE(QT5)
    // Qt subtracts 1 from the descent to account for the baseline,
    // we add it back here to get correct metrics for WebKit.
    descent += 1;
#endif

    // The line spacing should always be >= (ascent + descent), but this
    // may be false in some cases due to misbehaving platform libraries.
    // Workaround from SimpleFontPango.cpp and SimpleFontFreeType.cpp
    if (lineSpacing < ascent + descent)
        lineSpacing = ascent + descent;

    // QFontMetricsF::leading() may return negative values on platforms
    // such as FreeType. Calculate the line gap manually instead.
    float lineGap = lineSpacing - ascent - descent;

    m_fontMetrics.setAscent(ascent);
    // WebKit expects the descent to be positive.
    m_fontMetrics.setDescent(qAbs(descent));
    m_fontMetrics.setLineSpacing(lineSpacing);
    m_fontMetrics.setXHeight(xHeight);
    m_fontMetrics.setLineGap(lineGap);
    m_spaceWidth = spaceWidth;
}

示例#5

文件： SimpleFontDataQt.cpp 项目： dzhshf/WebKit

void SimpleFontData::platformCharWidthInit()
{
    if (!m_platformData.size())
        return;
#if HAVE(QRAWFONT)
    QRawFont rawFont(m_platformData.rawFont());
    m_avgCharWidth = rawFont.averageCharWidth();
    m_maxCharWidth = rawFont.maxCharWidth();
#else
    QFontMetricsF fm(m_platformData.font());
    m_avgCharWidth = fm.averageCharWidth();
    m_maxCharWidth = fm.maxWidth();
#endif
}