Exemple #1
0
void DWriteFontTypeface::onFilterRec(SkScalerContext::Rec* rec) const {
    if (rec->fFlags & SkScalerContext::kLCD_Vertical_Flag) {
        rec->fMaskFormat = SkMask::kA8_Format;
    }

    unsigned flagsWeDontSupport = SkScalerContext::kVertical_Flag |
                                  SkScalerContext::kDevKernText_Flag |
                                  SkScalerContext::kForceAutohinting_Flag |
                                  SkScalerContext::kEmbolden_Flag |
                                  SkScalerContext::kLCD_Vertical_Flag;
    rec->fFlags &= ~flagsWeDontSupport;

    SkPaint::Hinting h = rec->getHinting();
    // DirectWrite does not provide for hinting hints.
    h = SkPaint::kSlight_Hinting;
    rec->setHinting(h);

#if defined(SK_FONT_HOST_USE_SYSTEM_SETTINGS)
    IDWriteFactory* factory = sk_get_dwrite_factory();
    if (factory != nullptr) {
        SkTScopedComPtr<IDWriteRenderingParams> defaultRenderingParams;
        if (SUCCEEDED(factory->CreateRenderingParams(&defaultRenderingParams))) {
            float gamma = defaultRenderingParams->GetGamma();
            rec->setDeviceGamma(gamma);
            rec->setPaintGamma(gamma);

            rec->setContrast(defaultRenderingParams->GetEnhancedContrast());
        }
    }
#endif
}