コード例 #1
0
glyph_metrics_t QFontEngineDirectWrite::boundingBox(glyph_t g)
{
    if (m_directWriteFontFace == 0)
        return glyph_metrics_t();

    UINT16 glyphIndex = g;

    DWRITE_GLYPH_METRICS glyphMetrics;
    HRESULT hr = m_directWriteFontFace->GetDesignGlyphMetrics(&glyphIndex, 1, &glyphMetrics);
    if (SUCCEEDED(hr)) {
        QFixed advanceWidth = DESIGN_TO_LOGICAL(glyphMetrics.advanceWidth);
        QFixed leftSideBearing = DESIGN_TO_LOGICAL(glyphMetrics.leftSideBearing);
        QFixed rightSideBearing = DESIGN_TO_LOGICAL(glyphMetrics.rightSideBearing);
        QFixed advanceHeight = DESIGN_TO_LOGICAL(glyphMetrics.advanceHeight);
        QFixed verticalOriginY = DESIGN_TO_LOGICAL(glyphMetrics.verticalOriginY);

        if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
            advanceWidth = advanceWidth.round();
            advanceHeight = advanceHeight.round();
        }

        QFixed width = advanceWidth - leftSideBearing - rightSideBearing;

        return glyph_metrics_t(-leftSideBearing, -verticalOriginY,
                               width, m_ascent + m_descent,
                               advanceWidth, advanceHeight);
    } else {
        qErrnoWarning("QFontEngineDirectWrite::boundingBox: GetDesignGlyphMetrics failed");
    }

    return glyph_metrics_t();
}
コード例 #2
0
void QFontEngineDirectWrite::collectMetrics()
{
    if (m_directWriteFontFace != 0) {
        DWRITE_FONT_METRICS metrics;

        m_directWriteFontFace->GetMetrics(&metrics);
        m_unitsPerEm = metrics.designUnitsPerEm;

        m_lineThickness = DESIGN_TO_LOGICAL(metrics.underlineThickness);
        m_ascent = DESIGN_TO_LOGICAL(metrics.ascent);
        m_descent = DESIGN_TO_LOGICAL(metrics.descent);
        m_xHeight = DESIGN_TO_LOGICAL(metrics.xHeight);
        m_lineGap = DESIGN_TO_LOGICAL(metrics.lineGap);
    }
}
コード例 #3
0
void QFontEngineDirectWrite::recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFlags) const
{
    if (m_directWriteFontFace == 0)
        return;

    QVarLengthArray<UINT16> glyphIndices(glyphs->numGlyphs);

    // ### Caching?
    for(int i=0; i<glyphs->numGlyphs; i++)
        glyphIndices[i] = UINT16(glyphs->glyphs[i]);

    QVarLengthArray<DWRITE_GLYPH_METRICS> glyphMetrics(glyphIndices.size());
    HRESULT hr = m_directWriteFontFace->GetDesignGlyphMetrics(glyphIndices.data(),
                                                              glyphIndices.size(),
                                                              glyphMetrics.data());
    if (SUCCEEDED(hr)) {
        for (int i=0; i<glyphs->numGlyphs; ++i) {
            glyphs->advances_x[i] = DESIGN_TO_LOGICAL(glyphMetrics[i].advanceWidth);
            if (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
                glyphs->advances_x[i] = glyphs->advances_x[i].round();
            glyphs->advances_y[i] = 0;
        }
    } else {
        qErrnoWarning("QFontEngineDirectWrite::recalcAdvances: GetDesignGlyphMetrics failed");
    }
}
コード例 #4
0
glyph_metrics_t QWindowsFontEngineDirectWrite::boundingBox(glyph_t g)
{
    UINT16 glyphIndex = g;

    DWRITE_GLYPH_METRICS glyphMetrics;
    HRESULT hr = m_directWriteFontFace->GetDesignGlyphMetrics(&glyphIndex, 1, &glyphMetrics);
    if (SUCCEEDED(hr)) {
        QFixed advanceWidth = DESIGN_TO_LOGICAL(glyphMetrics.advanceWidth);
        QFixed leftSideBearing = DESIGN_TO_LOGICAL(glyphMetrics.leftSideBearing);
        QFixed rightSideBearing = DESIGN_TO_LOGICAL(glyphMetrics.rightSideBearing);
        QFixed advanceHeight = DESIGN_TO_LOGICAL(glyphMetrics.advanceHeight);
        QFixed verticalOriginY = DESIGN_TO_LOGICAL(glyphMetrics.verticalOriginY);
        QFixed topSideBearing = DESIGN_TO_LOGICAL(glyphMetrics.topSideBearing);
        QFixed bottomSideBearing = DESIGN_TO_LOGICAL(glyphMetrics.bottomSideBearing);

        if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
            advanceWidth = advanceWidth.round();
            advanceHeight = advanceHeight.round();
        }

        QFixed width = advanceWidth - leftSideBearing - rightSideBearing;
        QFixed height = advanceHeight - topSideBearing - bottomSideBearing;
        return glyph_metrics_t(leftSideBearing,
                               -verticalOriginY + topSideBearing,
                               width,
                               height,
                               advanceWidth,
                               advanceHeight);
    } else {
        qErrnoWarning("%s: GetDesignGlyphMetrics failed", __FUNCTION__);
    }

    return glyph_metrics_t();
}