forked from 0ad/0ad
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/**
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* =========================================================================
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* File : unifont.h
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* Project : 0 A.D.
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* Description : Unicode OpenGL texture font.
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*
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* @author Philip Taylor (philip@zaynar.demon.co.uk)
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* =========================================================================
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*/
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#ifndef __UNIFONT_H__
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#define __UNIFONT_H__
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#include <stdarg.h> // va_list
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#include "../handle.h"
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// Load and return a handle to the font defined
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// in fn+".fnt" with texture fn+".tga"
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extern Handle unifont_load(const char* fn, uint flags = 0);
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// Release a handle to a previously loaded font
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extern LibError unifont_unload(Handle& h);
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// Use the font referenced by h for all subsequent glwprintf() calls.
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// Must be called before any glwprintf().
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extern LibError unifont_bind(Handle h);
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// Output text at current OpenGL modelview pos.
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extern void glvwprintf(const wchar_t* fmt, va_list args);
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extern void glwprintf(const wchar_t* fmt, ...);
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/*
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glwprintf assumes an environment roughly like:
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glEnable(GL_TEXTURE_2D);
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glDisable(GL_CULL_FACE);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glEnable(GL_BLEND);
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glDisable(GL_ALPHA_TEST);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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*/
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// Intended for the GUI (hence Unicode). 'height' is roughly the height of
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// a capital letter, for use when aligning text in an aesthetically pleasing way.
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LibError unifont_stringsize(const Handle h, const wchar_t* text, int& width, int& height);
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// Get only the height
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int unifont_height(const Handle h);
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// Get only the width of one character
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int unifont_character_width(const Handle h, wchar_t c);
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// Return spacing in pixels from one line of text to the next
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int unifont_linespacing(const Handle h);
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#endif // __UNIFONT_H__
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