diff options
| -rw-r--r-- | vcl/inc/font/PhysicalFontFace.hxx | 14 | ||||
| -rw-r--r-- | vcl/source/font/PhysicalFontFace.cxx | 55 |
2 files changed, 69 insertions, 0 deletions
diff --git a/vcl/inc/font/PhysicalFontFace.hxx b/vcl/inc/font/PhysicalFontFace.hxx index 01ad46dea54e..75133503e8af 100644 --- a/vcl/inc/font/PhysicalFontFace.hxx +++ b/vcl/inc/font/PhysicalFontFace.hxx @@ -23,6 +23,7 @@ #include <salhelper/simplereferenceobject.hxx> #include <rtl/ref.hxx> +#include <tools/color.hxx> #include <tools/long.hxx> #include <vcl/dllapi.h> #include <vcl/fontcapabilities.hxx> @@ -84,6 +85,14 @@ private: hb_blob_t* mpBlob; }; +struct ColorLayer +{ + sal_GlyphId nGlyphIndex; + uint32_t nColorIndex; +}; + +typedef std::vector<Color> ColorPalette; + // TODO: no more direct access to members // TODO: get rid of height/width for scalable fonts // TODO: make cloning cheaper @@ -125,6 +134,10 @@ public: bool CreateFontSubset(std::vector<sal_uInt8>&, const sal_GlyphId*, const sal_uInt8*, const int, FontSubsetInfo&) const; + bool HasColorLayers() const; + const ColorPalette& GetColorPalette(size_t) const; + std::vector<ColorLayer> GetGlyphColorLayers(sal_GlyphId) const; + virtual hb_face_t* GetHbFace() const; virtual hb_blob_t* GetHbTable(hb_tag_t) const { @@ -137,6 +150,7 @@ protected: mutable FontCharMapRef mxCharMap; mutable vcl::FontCapabilities maFontCapabilities; mutable bool mbFontCapabilitiesRead; + mutable std::vector<ColorPalette> maColorPalettes; explicit PhysicalFontFace(const FontAttributes&); }; diff --git a/vcl/source/font/PhysicalFontFace.cxx b/vcl/source/font/PhysicalFontFace.cxx index 66cd3aae584b..4a459ae8cee3 100644 --- a/vcl/source/font/PhysicalFontFace.cxx +++ b/vcl/source/font/PhysicalFontFace.cxx @@ -36,6 +36,8 @@ #include <string_view> +#include <hb-ot.h> + namespace vcl::font { PhysicalFontFace::PhysicalFontFace(const FontAttributes& rDFA) @@ -305,6 +307,59 @@ bool PhysicalFontFace::CreateFontSubset(std::vector<sal_uInt8>& rOutBuffer, // write subset into destination file return CreateTTFfontSubset(aSftFont, rOutBuffer, pGlyphIds, pEncoding, nGlyphCount); } + +bool PhysicalFontFace::HasColorLayers() const +{ + const auto pHbFace = GetHbFace(); + return hb_ot_color_has_layers(pHbFace) && hb_ot_color_has_palettes(pHbFace); +} + +const ColorPalette& PhysicalFontFace::GetColorPalette(size_t nIndex) const +{ + if (maColorPalettes.empty()) + { + const auto pHbFace = GetHbFace(); + + auto nPalettes = hb_ot_color_palette_get_count(pHbFace); + maColorPalettes.reserve(nPalettes); + for (auto nPalette = 0u; nPalette < nPalettes; nPalette++) + { + auto nColors = hb_ot_color_palette_get_colors(pHbFace, nPalette, 0, nullptr, nullptr); + ColorPalette aPalette(nColors); + for (auto nColor = 0u; nColor < nColors; nColor++) + { + uint32_t nCount = 1; + hb_color_t aColor; + hb_ot_color_palette_get_colors(pHbFace, nPalette, nColor, &nCount, &aColor); + auto a = hb_color_get_alpha(aColor); + auto r = hb_color_get_red(aColor); + auto g = hb_color_get_green(aColor); + auto b = hb_color_get_blue(aColor); + aPalette[nColor] = Color(ColorAlphaTag::ColorAlpha, a, r, g, b); + } + maColorPalettes.push_back(aPalette); + } + } + + return maColorPalettes[nIndex]; +} + +std::vector<ColorLayer> PhysicalFontFace::GetGlyphColorLayers(sal_GlyphId nGlyphIndex) const +{ + const auto pHbFace = GetHbFace(); + + auto nLayers = hb_ot_color_glyph_get_layers(pHbFace, nGlyphIndex, 0, nullptr, nullptr); + std::vector<ColorLayer> aLayers(nLayers); + for (auto nLayer = 0u; nLayer < nLayers; nLayer++) + { + hb_ot_color_layer_t aLayer; + uint32_t nCount = 1; + hb_ot_color_glyph_get_layers(pHbFace, nGlyphIndex, nLayer, &nCount, &aLayer); + aLayers[nLayer] = { aLayer.glyph, aLayer.color_index }; + } + + return aLayers; +} } /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */ |