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/* Copyright (C) 2013 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INCLUDED_FONT
#define INCLUDED_FONT
#include "graphics/Texture.h"
#include "lib/res/handle.h"
#include <map>
class CStrW;
struct UnifontGlyphData;
/**
* Storage for a bitmap font. Loaded by CFontManager.
*/
class CFont
{
friend class CFontManager;
CFont() {}
public:
struct GlyphData
{
float u0, v0, u1, v1;
i16 x0, y0, x1, y1;
i16 xadvance;
u8 defined;
};
/**
* Relatively efficient lookup of GlyphData from 16-bit Unicode codepoint.
* This is stored as a sparse 2D array, exploiting the knowledge that a font
* typically only supports a small number of 256-codepoint blocks, so most
* elements of m_Data will be NULL.
*/
class GlyphMap
{
NONCOPYABLE(GlyphMap);
public:
GlyphMap();
~GlyphMap();
void set(u16 i, const GlyphData& val);
const GlyphData* get(u16 i) const
{
if (!m_Data[i >> 8])
return NULL;
if (!m_Data[i >> 8][i & 0xff].defined)
return NULL;
return &m_Data[i >> 8][i & 0xff];
}
private:
GlyphData* m_Data[256];
};
bool HasRGB() const { return m_HasRGB; }
int GetLineSpacing() const { return m_LineSpacing; }
int GetHeight() const { return m_Height; }
int GetCharacterWidth(wchar_t c) const;
void CalculateStringSize(const wchar_t* string, int& w, int& h) const;
void GetGlyphBounds(float& x0, float& y0, float& x1, float& y1) const
{
x0 = m_BoundsX0;
y0 = m_BoundsY0;
x1 = m_BoundsX1;
y1 = m_BoundsY1;
}
const GlyphMap& GetGlyphs() const { return m_Glyphs; }
CTexturePtr GetTexture() const { return m_Texture; }
private:
CTexturePtr m_Texture;
bool m_HasRGB; // true if RGBA, false if ALPHA
GlyphMap m_Glyphs;
int m_LineSpacing;
int m_Height; // height of a capital letter, roughly
// Bounding box of all glyphs
float m_BoundsX0;
float m_BoundsY0;
float m_BoundsX1;
float m_BoundsY1;
};
#endif // INCLUDED_FONT
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