TGUI  0.10-dev
BackendFontSFML.hpp
1
2//
3// TGUI - Texus' Graphical User Interface
4// Copyright (C) 2012-2021 Bruno Van de Velde (vdv_b@tgui.eu)
5//
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10// including commercial applications, and to alter it and redistribute it freely,
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24
25
26#ifndef TGUI_BACKEND_FONT_SFML_HPP
27#define TGUI_BACKEND_FONT_SFML_HPP
28
29#include <TGUI/Backend/Font/BackendFont.hpp>
30#include <SFML/Graphics/Font.hpp>
31#include <unordered_set>
32
34
35namespace tgui
36{
40 class TGUI_API BackendFontSFML : public BackendFont
41 {
42 public:
43
52 bool loadFromMemory(std::unique_ptr<std::uint8_t[]> data, std::size_t sizeInBytes) override;
54
55
63 bool hasGlyph(char32_t codePoint) const override;
64
65
79 FontGlyph getGlyph(char32_t codePoint, unsigned int characterSize, bool bold, float outlineThickness = 0) override;
80
81
96 float getKerning(char32_t first, char32_t second, unsigned int characterSize, bool bold) override;
97
98
108 float getLineSpacing(unsigned int characterSize) override;
109
110
120 float getUnderlinePosition(unsigned int characterSize) override;
121
122
132 float getUnderlineThickness(unsigned int characterSize) override;
133
134
142 std::shared_ptr<BackendTexture> getTexture(unsigned int characterSize) override;
143
144
154 void setSmooth(bool smooth) override;
155
156
162 sf::Font& getInternalFont();
163
164
166 protected:
167
168 sf::Font m_font;
169 std::unique_ptr<std::uint8_t[]> m_fileContents;
170
171 std::unordered_set<std::uint64_t> m_loadedGlyphKeys;
172
173 // We keep one texture per character size. Other font backends don't do this, but this is to prevent existing code
174 // from breaking since sf::Font does the same.
175 std::map<unsigned int, std::shared_ptr<BackendTexture>> m_textures;
176 };
177}
178
180
181#endif // TGUI_BACKEND_FONT_SFML_HPP
Font implementation that makes use of SFML.
Definition: BackendFontSFML.hpp:41
float getUnderlinePosition(unsigned int characterSize) override
Get the position of the underline.
bool hasGlyph(char32_t codePoint) const override
Returns whether a font contains a certain glyph.
FontGlyph getGlyph(char32_t codePoint, unsigned int characterSize, bool bold, float outlineThickness=0) override
Retrieve a glyph of the font.
std::shared_ptr< BackendTexture > getTexture(unsigned int characterSize) override
Returns the texture that is used to store glyphs of the given character size.
float getUnderlineThickness(unsigned int characterSize) override
Get the thickness of the underline.
bool loadFromMemory(std::unique_ptr< std::uint8_t[]> data, std::size_t sizeInBytes) override
Loads a font from memory.
void setSmooth(bool smooth) override
Enable or disable the smooth filter.
float getLineSpacing(unsigned int characterSize) override
Returns the line spacing.
float getKerning(char32_t first, char32_t second, unsigned int characterSize, bool bold) override
Returns the kerning offset of two glyphs.
Base class for font implementations that depend on the backend.
Definition: BackendFont.hpp:43
virtual bool loadFromMemory(std::unique_ptr< std::uint8_t[]> data, std::size_t sizeInBytes)=0
Loads a font from memory.
Namespace that contains all TGUI functions and classes.
Definition: AbsoluteOrRelativeValue.hpp:36
Information about a glyph in the font.
Definition: Font.hpp:47