TGUI  0.9.3
BackendFont.hpp
1
2//
3// TGUI - Texus' Graphical User Interface
4// Copyright (C) 2012-2021 Bruno Van de Velde (vdv_b@tgui.eu)
5//
6// This software is provided 'as-is', without any express or implied warranty.
7// In no event will the authors be held liable for any damages arising from the use of this software.
8//
9// Permission is granted to anyone to use this software for any purpose,
10// including commercial applications, and to alter it and redistribute it freely,
11// subject to the following restrictions:
12//
13// 1. The origin of this software must not be misrepresented;
14// you must not claim that you wrote the original software.
15// If you use this software in a product, an acknowledgment
16// in the product documentation would be appreciated but is not required.
17//
18// 2. Altered source versions must be plainly marked as such,
19// and must not be misrepresented as being the original software.
20//
21// 3. This notice may not be removed or altered from any source distribution.
22//
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
35namespace 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
87#ifndef TGUI_REMOVE_DEPRECATED_CODE
101 TGUI_DEPRECATED("Extra bold argument should be added") virtual float getKerning(char32_t first, char32_t second, unsigned int characterSize)
102 {
103 return getKerning(first, second, characterSize, false);
104 }
105#endif
106
121 virtual float getKerning(char32_t first, char32_t second, unsigned int characterSize, bool bold) = 0;
122
123
133 virtual float getLineSpacing(unsigned int characterSize) = 0;
134 };
135}
136
138
139#endif // TGUI_BACKEND_FONT_HPP
Base class for font implementations that depend on the backend.
Definition: BackendFont.hpp:41
virtual float getLineSpacing(unsigned int characterSize)=0
Returns the line spacing.
virtual FontGlyph getGlyph(char32_t codePoint, unsigned int characterSize, bool bold, float outlineThickness=0)=0
Retrieve a glyph of the font.
virtual ~BackendFontBase()=default
Virtual destructor.
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, bool bold)=0
Returns the kerning offset of two glyphs.
virtual bool loadFromFile(const String &filename)=0
Loads a font from a file.
Wrapper class to store strings.
Definition: String.hpp:79
Namespace that contains all TGUI functions and classes.
Definition: AbsoluteOrRelativeValue.hpp:36
Information about a glyph in the font.
Definition: Font.hpp:47