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/***************************************************************************
*
* Project: OpenCPN
* Purpose: OpenGL text rendering
* Author: Sean D'Epagnier
*
***************************************************************************
* Copyright (C) 2014 Sean D'Epagnier *
* *
* This program 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. *
* *
* This program 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 this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
**************************************************************************/
#ifndef __TEXFONT_H__
#define __TEXFONT_H__
/* support ascii plus degree symbol for now pack font in a single texture 16x8 */
#define DEGREE_GLYPH 127
#define MIN_GLYPH 32
#define MAX_GLYPH 128
#define NUM_GLYPHS (MAX_GLYPH - MIN_GLYPH)
#define COLS_GLYPHS 16
#define ROWS_GLYPHS ((NUM_GLYPHS / COLS_GLYPHS)+1)
struct TexGlyphInfo {
int x, y, width, height;
float advance;
};
class TexFont {
public:
TexFont();
~TexFont();
void Build( wxFont &font, bool blur = false );
void Delete();
void GetTextExtent( const wxString &string, int *width, int *height);
void RenderString( const char *string, int x=0, int y=0 );
void RenderString( const wxString &string, int x=0, int y=0 );
bool IsBuilt(){ return m_built; }
void SetColor(wxColor &color){ m_color = color;}
private:
void GetTextExtent( const char *string, int *width, int *height);
void RenderGlyph( int c );
wxFont m_font;
bool m_blur;
TexGlyphInfo tgi[MAX_GLYPH];
unsigned int texobj;
int tex_w, tex_h;
int m_maxglyphw;
int m_maxglyphh;
bool m_built;
float m_dx;
float m_dy;
wxColor m_color;
};
TexFont *GetTexFont(wxFont *key);
#endif //guard
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