src/os/windows/font_win32.h

   1 /*
   2  * This file is part of OpenTTD.
   3  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   4  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   5  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   6  */
   7
   8 /** @file font_win32.h Functions related to font handling on Win32. */
   9
  10 #ifndef FONT_WIN32_H
  11 #define FONT_WIN32_H
  12
  13 #include "../../fontcache/truetypefontcache.h"
  14 #include "win32.h"
  15
  16 #include <windows.h>
  17
  18 /** Font cache for fonts that are based on a Win32 font. */
  19 class Win32FontCache : public TrueTypeFontCache {
  20 private:
  21         LOGFONT logfont;      ///< Logical font information for selecting the font face.
  22         HFONT font = nullptr; ///< The font face associated with this font.
  23         HDC dc = nullptr;     ///< Cached GDI device context.
  24         HGDIOBJ old_font;     ///< Old font selected into the GDI context.
  25         SIZE glyph_size;      ///< Maximum size of regular glyphs.
  26         std::string fontname; ///< Cached copy of loaded font facename
  27
  28         void SetFontSize(int pixels);
  29
  30 protected:
  31         const void *InternalGetFontTable(uint32_t tag, size_t &length) override;
  32         const Sprite *InternalGetGlyph(GlyphID key, bool aa) override;
  33
  34 public:
  35         Win32FontCache(FontSize fs, const LOGFONT &logfont, int pixels);
  36         ~Win32FontCache();
  37         void ClearFontCache() override;
  38         GlyphID MapCharToGlyph(char32_t key, bool allow_fallback = true) override;
  39         std::string GetFontName() override { return this->fontname; }
  40         const void *GetOSHandle() override { return &this->logfont; }
  41 };
  42
  43 void LoadWin32Font(FontSize fs);
  44 void LoadWin32Font(FontSize fs, const std::string &file_name, uint size);
  45
  46 #endif /* FONT_WIN32_H */