TGUI  0.9-beta
BackendFont.hpp
1 //
3 // TGUI - Texus' Graphical User Interface
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24 
25 
26 #ifndef TGUI_BACKEND_FONT_HPP
27 #define TGUI_BACKEND_FONT_HPP
28 
29 #include <TGUI/Font.hpp>
30 #include <TGUI/String.hpp>
31 #include <cstdint>
32 
34 
35 namespace tgui
36 {
40  class TGUI_API BackendFontBase
41  {
42  public:
43 
47  virtual ~BackendFontBase() = default;
48 
49 
57  virtual bool loadFromFile(const String& filename) = 0;
58 
59 
68  virtual bool loadFromMemory(const void* data, std::size_t sizeInBytes) = 0;
69 
70 
84  virtual FontGlyph getGlyph(char32_t codePoint, unsigned int characterSize, bool bold, float outlineThickness = 0) = 0;
85 
86 
100  virtual float getKerning(char32_t first, char32_t second, unsigned int characterSize) = 0;
101 
102 
112  virtual float getLineSpacing(unsigned int characterSize) = 0;
113  };
114 }
115 
117 
118 #endif // TGUI_BACKEND_FONT_HPP
virtual ~BackendFontBase()=default
Virtual destructor.
Base class for font implementations that depend on the backend.
Definition: BackendFont.hpp:41
Namespace that contains all TGUI functions and classes.
Definition: AbsoluteOrRelativeValue.hpp:36
virtual bool loadFromMemory(const void *data, std::size_t sizeInBytes)=0
Loads a font from memory.
virtual float getKerning(char32_t first, char32_t second, unsigned int characterSize)=0
Returns the kerning offset of two glyphs.
virtual float getLineSpacing(unsigned int characterSize)=0
Returns the line spacing.
virtual bool loadFromFile(const String &filename)=0
Loads a font from a file.
Wrapper class to store strings.
Definition: String.hpp:74
Information about a glyph in the font.
Definition: Font.hpp:47
virtual FontGlyph getGlyph(char32_t codePoint, unsigned int characterSize, bool bold, float outlineThickness=0)=0
Retrieve a glyph of the font.