Line data    Source code

       1             : /**
       2             :  Copyright (c) 2024 Stappler LLC <admin@stappler.dev>
       3             : 
       4             :  Permission is hereby granted, free of charge, to any person obtaining a copy
       5             :  of this software and associated documentation files (the "Software"), to deal
       6             :  in the Software without restriction, including without limitation the rights
       7             :  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
       8             :  copies of the Software, and to permit persons to whom the Software is
       9             :  furnished to do so, subject to the following conditions:
      10             : 
      11             :  The above copyright notice and this permission notice shall be included in
      12             :  all copies or substantial portions of the Software.
      13             : 
      14             :  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      15             :  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      16             :  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      17             :  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      18             :  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      19             :  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
      20             :  THE SOFTWARE.
      21             :  **/
      22             : 
      23             : #ifndef CORE_FONT_SPFONTLIBRARY_H_
      24             : #define CORE_FONT_SPFONTLIBRARY_H_
      25             : 
      26             : #include "SPFontFace.h"
      27             : 
      28             : namespace STAPPLER_VERSIONIZED stappler::font {
      29             : 
      30             : class FontLibrary;
      31             : 
      32             : class FontFaceObjectHandle : public RefBase<memory::StandartInterface>, public InterfaceObject<memory::StandartInterface> {
      33             : public:
      34             :         virtual ~FontFaceObjectHandle();
      35             : 
      36             :         bool init(const Rc<FontLibrary> &, Rc<FontFaceObject> &&, Function<void(const FontFaceObjectHandle *)> &&onDestroy);
      37             : 
      38        4471 :         FT_Face getFace() const { return _face->getFace(); }
      39             : 
      40             :         bool acquireTexture(char16_t, const Callback<void(const CharTexture &)> &);
      41             : 
      42             : protected:
      43             :         Rc<FontLibrary> _library;
      44             :         Rc<FontFaceObject> _face;
      45             :         Function<void(const FontFaceObjectHandle *)> _onDestroy;
      46             : };
      47             : 
      48             : class FontLibrary : public RefBase<memory::StandartInterface>, public InterfaceObject<memory::StandartInterface> {
      49             : public:
      50             :         enum class DefaultFontName {
      51             :                 None,
      52             :                 RobotoFlex_VariableFont,
      53             :                 RobotoMono_VariableFont,
      54             :                 RobotoMono_Italic_VariableFont,
      55             :                 DejaVuSans
      56             :         };
      57             : 
      58             :         struct FontData {
      59             :                 bool persistent;
      60             :                 BytesView view;
      61             :                 Bytes bytes;
      62             :                 Function<Bytes()> callback;
      63             : 
      64          24 :                 FontData(BytesView v, bool p) : persistent(p) {
      65          24 :                         if (persistent) {
      66          24 :                                 view = v;
      67             :                         } else {
      68           0 :                                 bytes = v.bytes<Interface>();
      69           0 :                                 view = bytes;
      70             :                         }
      71          24 :                 }
      72           0 :                 FontData(Bytes &&b) : persistent(false), bytes(move(b)) {
      73           0 :                         view = bytes;
      74           0 :                 }
      75          72 :                 FontData(Function<Bytes()> &&cb) : persistent(true), callback(move(cb)) { }
      76             :         };
      77             : 
      78             :         static BytesView getFont(DefaultFontName);
      79             :         static StringView getFontName(DefaultFontName);
      80             : 
      81             :         FontLibrary();
      82             :         virtual ~FontLibrary();
      83             : 
      84             :         Rc<FontFaceData> openFontData(StringView, FontLayoutParameters params, bool isParamsPreconfigured, const Callback<FontData()> & = nullptr);
      85             : 
      86             :         Rc<FontFaceObject> openFontFace(StringView, const FontSpecializationVector &, const Callback<FontData()> &);
      87             :         Rc<FontFaceObject> openFontFace(const Rc<FontFaceData> &, const FontSpecializationVector &);
      88             : 
      89             :         void invalidate();
      90             : 
      91             :         void update();
      92             : 
      93             :         uint16_t getNextId();
      94             :         void releaseId(uint16_t);
      95             : 
      96             :         Rc<FontFaceObjectHandle> makeThreadHandle(const Rc<FontFaceObject> &);
      97             : 
      98             : protected:
      99             :         FT_Face newFontFace(BytesView);
     100             :         void doneFontFace(FT_Face);
     101             : 
     102             :         mem_std::Mutex _mutex;
     103             :         std::shared_mutex _sharedMutex;
     104             :         Map<StringView, Rc<FontFaceObject>> _faces;
     105             :         Map<StringView, Rc<FontFaceData>> _data;
     106             :         Map<FontFaceObject *, Map<std::thread::id, Rc<FontFaceObjectHandle>>> _threads;
     107             :         FT_Library _library = nullptr;
     108             : 
     109             :         std::bitset<1024 * 16> _fontIds;
     110             : };
     111             : 
     112             : }
     113             : 
     114             : #endif /* CORE_FONT_SPFONTLIBRARY_H_ */