vladislavbelov
ffc4a56b9f
Fixes #6846 Differential Revision: https://code.wildfiregames.com/D5185 This was SVN commit r27965.
101 lines
2.4 KiB
C++
101 lines
2.4 KiB
C++
/* Copyright (C) 2022 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef INCLUDED_FONT
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#define INCLUDED_FONT
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#include "graphics/Texture.h"
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/**
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* Storage for a bitmap font. Loaded by CFontManager.
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*/
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class CFont
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{
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public:
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struct GlyphData
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{
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float u0, v0, u1, v1;
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i16 x0, y0, x1, y1;
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i16 xadvance;
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u8 defined;
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};
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/**
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* Relatively efficient lookup of GlyphData from 16-bit Unicode codepoint.
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* This is stored as a sparse 2D array, exploiting the knowledge that a font
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* typically only supports a small number of 256-codepoint blocks, so most
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* elements of m_Data will be NULL.
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*/
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class GlyphMap
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{
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NONCOPYABLE(GlyphMap);
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public:
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GlyphMap();
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~GlyphMap();
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void set(u16 i, const GlyphData& val);
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const GlyphData* get(u16 i) const
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{
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if (!m_Data[i >> 8])
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return NULL;
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if (!m_Data[i >> 8][i & 0xff].defined)
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return NULL;
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return &m_Data[i >> 8][i & 0xff];
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}
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private:
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GlyphData* m_Data[256];
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};
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bool HasRGB() const { return m_HasRGB; }
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int GetLineSpacing() const { return m_LineSpacing; }
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int GetHeight() const { return m_Height; }
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int GetCharacterWidth(wchar_t c) const;
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void CalculateStringSize(const wchar_t* string, int& w, int& h) const;
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void GetGlyphBounds(float& x0, float& y0, float& x1, float& y1) const
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{
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x0 = m_BoundsX0;
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y0 = m_BoundsY0;
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x1 = m_BoundsX1;
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y1 = m_BoundsY1;
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}
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const GlyphMap& GetGlyphs() const { return m_Glyphs; }
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CTexturePtr GetTexture() const { return m_Texture; }
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private:
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friend class CFontManager;
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CFont() = default;
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CTexturePtr m_Texture;
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bool m_HasRGB; // true if RGBA, false if ALPHA
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GlyphMap m_Glyphs;
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int m_LineSpacing;
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int m_Height; // height of a capital letter, roughly
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// Bounding box of all glyphs
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float m_BoundsX0;
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float m_BoundsY0;
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float m_BoundsX1;
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float m_BoundsY1;
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};
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#endif // INCLUDED_FONT
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