C++ QFixed类代码示例

本文整理汇总了C++中QFixed类的典型用法代码示例。如果您正苦于以下问题：C++ QFixed类的具体用法？C++ QFixed怎么用？C++ QFixed使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了QFixed类的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: glyph_metrics_t

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();
}

开发者ID:KDE，项目名称:android-qt，代码行数:32，代码来源:qfontenginedirectwrite.cpp

示例2: DESIGN_TO_LOGICAL

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();
}

开发者ID:3163504123，项目名称:phantomjs，代码行数:34，代码来源:qwindowsfontenginedirectwrite.cpp

示例3: alphaMapBoundingBox

glyph_metrics_t QFontEngineDirectWrite::alphaMapBoundingBox(glyph_t glyph, QFixed subPixelPosition,
                                                            const QTransform &matrix,
                                                            GlyphFormat /*format*/)
{
    glyph_metrics_t bbox = QFontEngine::boundingBox(glyph, matrix); // To get transformed advance

    UINT16 glyphIndex = glyph;
    FLOAT glyphAdvance = 0;

    DWRITE_GLYPH_OFFSET glyphOffset;
    glyphOffset.advanceOffset = 0;
    glyphOffset.ascenderOffset = 0;

    DWRITE_GLYPH_RUN glyphRun;
    glyphRun.fontFace = m_directWriteFontFace;
    glyphRun.fontEmSize = fontDef.pixelSize;
    glyphRun.glyphCount = 1;
    glyphRun.glyphIndices = &glyphIndex;
    glyphRun.glyphAdvances = &glyphAdvance;
    glyphRun.isSideways = false;
    glyphRun.bidiLevel = 0;
    glyphRun.glyphOffsets = &glyphOffset;

    DWRITE_MATRIX transform;
    transform.dx = subPixelPosition.toReal();
    transform.dy = 0;
    transform.m11 = matrix.m11();
    transform.m12 = matrix.m12();
    transform.m21 = matrix.m21();
    transform.m22 = matrix.m22();

    IDWriteGlyphRunAnalysis *glyphAnalysis = NULL;
    HRESULT hr = m_directWriteFactory->CreateGlyphRunAnalysis(
                &glyphRun,
                1.0f,
                &transform,
                DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC,
                DWRITE_MEASURING_MODE_NATURAL,
                0.0, 0.0,
                &glyphAnalysis
                );

    if (SUCCEEDED(hr)) {
        RECT rect;
        glyphAnalysis->GetAlphaTextureBounds(DWRITE_TEXTURE_CLEARTYPE_3x1, &rect);
        glyphAnalysis->Release();

        return glyph_metrics_t(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
                               bbox.xoff, bbox.yoff);
    } else {
        return glyph_metrics_t();
    }
}

开发者ID:KDE，项目名称:android-qt，代码行数:53，代码来源:qfontenginedirectwrite.cpp

示例4: writeTaggedQFixed

void QPAGenerator::writeTaggedQFixed(QFontEngineQPA::HeaderTag tag, QFixed value)
{
    writeUInt16(tag);
    writeUInt16(sizeof(quint32));
    writeUInt32(value.value());
}

开发者ID:phen89，项目名称:rtqt，代码行数:6，代码来源:qfontengine_qpa.cpp

示例5:

QFixed QFontEngineS60::emSquareSize() const
{
    const QFixed unitsPerEm = m_extras->unitsPerEm();
    return unitsPerEm.toInt() == -1 ?
                QFixed::fromReal(m_originalFontSizeInPixels) : unitsPerEm;
}

开发者ID:，项目名称:，代码行数:6，代码来源:

示例6: imageForGlyph

QImage QFontEngineDirectWrite::imageForGlyph(glyph_t t,
                                             QFixed subPixelPosition,
                                             int margin,
                                             const QTransform &xform)
{
    UINT16 glyphIndex = t;
    FLOAT glyphAdvance = 0;

    DWRITE_GLYPH_OFFSET glyphOffset;
    glyphOffset.advanceOffset = 0;
    glyphOffset.ascenderOffset = 0;

    DWRITE_GLYPH_RUN glyphRun;
    glyphRun.fontFace = m_directWriteFontFace;
    glyphRun.fontEmSize = fontDef.pixelSize;
    glyphRun.glyphCount = 1;
    glyphRun.glyphIndices = &glyphIndex;
    glyphRun.glyphAdvances = &glyphAdvance;
    glyphRun.isSideways = false;
    glyphRun.bidiLevel = 0;
    glyphRun.glyphOffsets = &glyphOffset;

    DWRITE_MATRIX transform;
    transform.dx = subPixelPosition.toReal();
    transform.dy = 0;
    transform.m11 = xform.m11();
    transform.m12 = xform.m12();
    transform.m21 = xform.m21();
    transform.m22 = xform.m22();

    IDWriteGlyphRunAnalysis *glyphAnalysis = NULL;
    HRESULT hr = m_directWriteFactory->CreateGlyphRunAnalysis(
                &glyphRun,
                1.0f,
                &transform,
                DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC,
                DWRITE_MEASURING_MODE_NATURAL,
                0.0, 0.0,
                &glyphAnalysis
                );

    if (SUCCEEDED(hr)) {
        RECT rect;
        glyphAnalysis->GetAlphaTextureBounds(DWRITE_TEXTURE_CLEARTYPE_3x1, &rect);

        rect.left -= margin;
        rect.top -= margin;
        rect.right += margin;
        rect.bottom += margin;

        int width = rect.right - rect.left;
        int height = rect.bottom - rect.top;

        int size = width * height * 3;
        if (size > 0) {
            BYTE *alphaValues = new BYTE[size];
            qMemSet(alphaValues, size, 0);

            hr = glyphAnalysis->CreateAlphaTexture(DWRITE_TEXTURE_CLEARTYPE_3x1,
                                                   &rect,
                                                   alphaValues,
                                                   size);

            if (SUCCEEDED(hr)) {
                QImage img(width, height, QImage::Format_RGB32);
                img.fill(0xffffffff);

                for (int y=0; y<height; ++y) {
                    uint *dest = reinterpret_cast<uint *>(img.scanLine(y));
                    BYTE *src = alphaValues + width * 3 * y;

                    for (int x=0; x<width; ++x) {
                        dest[x] = *(src) << 16
                                | *(src + 1) << 8
                                | *(src + 2);

                        src += 3;
                    }
                }

                delete[] alphaValues;
                glyphAnalysis->Release();

                return img;
            } else {
                delete[] alphaValues;
                glyphAnalysis->Release();

                qErrnoWarning("QFontEngineDirectWrite::imageForGlyph: CreateAlphaTexture failed");
            }
        }
    } else {
        qErrnoWarning("QFontEngineDirectWrite::imageForGlyph: CreateGlyphRunAnalysis failed");
    }

    return QImage();
}

开发者ID:KDE，项目名称:android-qt，代码行数:97，代码来源:qfontenginedirectwrite.cpp

示例7: imageForGlyph

QImage QWindowsFontEngineDirectWrite::imageForGlyph(glyph_t t,
        QFixed subPixelPosition,
        int margin,
        const QTransform &xform)
{
    glyph_metrics_t metrics = QFontEngine::boundingBox(t, xform);
    int width = (metrics.width + margin * 2 + 4).ceil().toInt() ;
    int height = (metrics.height + margin * 2 + 4).ceil().toInt();

    UINT16 glyphIndex = t;
    FLOAT glyphAdvance = metrics.xoff.toReal();

    DWRITE_GLYPH_OFFSET glyphOffset;
    glyphOffset.advanceOffset = 0;
    glyphOffset.ascenderOffset = 0;

    DWRITE_GLYPH_RUN glyphRun;
    glyphRun.fontFace = m_directWriteFontFace;
    glyphRun.fontEmSize = fontDef.pixelSize;
    glyphRun.glyphCount = 1;
    glyphRun.glyphIndices = &glyphIndex;
    glyphRun.glyphAdvances = &glyphAdvance;
    glyphRun.isSideways = false;
    glyphRun.bidiLevel = 0;
    glyphRun.glyphOffsets = &glyphOffset;

    QFixed x = margin - metrics.x.floor() + subPixelPosition;
    QFixed y = margin - metrics.y.floor();

    DWRITE_MATRIX transform;
    transform.dx = x.toReal();
    transform.dy = y.toReal();
    transform.m11 = xform.m11();
    transform.m12 = xform.m12();
    transform.m21 = xform.m21();
    transform.m22 = xform.m22();

    IDWriteGlyphRunAnalysis *glyphAnalysis = NULL;
    HRESULT hr = m_fontEngineData->directWriteFactory->CreateGlyphRunAnalysis(
                     &glyphRun,
                     1.0f,
                     &transform,
                     DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC,
                     DWRITE_MEASURING_MODE_NATURAL,
                     0.0, 0.0,
                     &glyphAnalysis
                 );

    if (SUCCEEDED(hr)) {
        RECT rect;
        rect.left = 0;
        rect.top = 0;
        rect.right = width;
        rect.bottom = height;

        int size = width * height * 3;
        BYTE *alphaValues = new BYTE[size];
        memset(alphaValues, size, 0);

        hr = glyphAnalysis->CreateAlphaTexture(DWRITE_TEXTURE_CLEARTYPE_3x1,
                                               &rect,
                                               alphaValues,
                                               size);

        if (SUCCEEDED(hr)) {
            QImage img(width, height, QImage::Format_RGB32);
            img.fill(0xffffffff);

            for (int y=0; y<height; ++y) {
                uint *dest = reinterpret_cast<uint *>(img.scanLine(y));
                BYTE *src = alphaValues + width * 3 * y;

                for (int x=0; x<width; ++x) {
                    dest[x] = *(src) << 16
                              | *(src + 1) << 8
                              | *(src + 2);

                    src += 3;
                }
            }

            delete[] alphaValues;
            glyphAnalysis->Release();

            return img;
        } else {
            delete[] alphaValues;
            glyphAnalysis->Release();

            qErrnoWarning("%s: CreateAlphaTexture failed", __FUNCTION__);
        }

    } else {
        qErrnoWarning("%s: CreateGlyphRunAnalysis failed", __FUNCTION__);
    }

    return QImage();
}

开发者ID:ballock，项目名称:qtbase，代码行数:98，代码来源:qwindowsfontenginedirectwrite.cpp

注：本文中的QFixed类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。