nuclear@5: /*
nuclear@5: libdrawtext - a simple library for fast text rendering in OpenGL
nuclear@5: Copyright (C) 2011  John Tsiombikas <nuclear@member.fsf.org>
nuclear@5: 
nuclear@5: This program is free software: you can redistribute it and/or modify
nuclear@5: it under the terms of the GNU Lesser General Public License as published by
nuclear@5: the Free Software Foundation, either version 3 of the License, or
nuclear@5: (at your option) any later version.
nuclear@5: 
nuclear@5: This program is distributed in the hope that it will be useful,
nuclear@5: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@5: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@5: GNU Lesser General Public License for more details.
nuclear@5: 
nuclear@5: You should have received a copy of the GNU Lesser General Public License
nuclear@5: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@5: */
nuclear@0: #ifndef TEXT_IMPL_H_
nuclear@0: #define TEXT_IMPL_H_
nuclear@0: 
nuclear@0: struct glyph {
nuclear@0: 	int code;
nuclear@0: 	float x, y, width, height;
nuclear@0: 	/* normalized coords [0, 1] */
nuclear@0: 	float nx, ny, nwidth, nheight;
nuclear@0: 	float orig_x, orig_y;
nuclear@0: 	float advance;
nuclear@0: 	struct glyph *next;
nuclear@0: };
nuclear@0: 
nuclear@0: struct dtx_glyphmap {
nuclear@0: 	int ptsize;
nuclear@0: 
nuclear@0: 	int xsz, ysz;
nuclear@0: 	unsigned char *pixels;
nuclear@0: 	unsigned int tex;
nuclear@0: 
nuclear@0: 	int cstart, cend;	/* character range */
nuclear@0: 	int crange;
nuclear@0: 
nuclear@0: 	float line_advance;
nuclear@0: 
nuclear@0: 	struct glyph *glyphs;
nuclear@0: 	struct dtx_glyphmap *next;
nuclear@0: };
nuclear@0: 
nuclear@0: struct dtx_font {
nuclear@0: 	/* freetype FT_Face */
nuclear@0: 	void *face;
nuclear@0: 
nuclear@0: 	/* list of glyphmaps */
nuclear@0: 	struct dtx_glyphmap *gmaps;
nuclear@0: 
nuclear@0: 	/* last returned glyphmap (cache) */
nuclear@0: 	struct dtx_glyphmap *last_gmap;
nuclear@0: };
nuclear@0: 
nuclear@0: 
nuclear@6: struct dtx_font *dtx_font;
nuclear@6: int dtx_font_sz;
nuclear@6: 
nuclear@6: 
nuclear@0: #define fperror(str) \
nuclear@0: 	fprintf(stderr, "%s: %s: %s\n", __func__, (str), strerror(errno))
nuclear@0: 
nuclear@6: int dtx_gl_init(void);
nuclear@6: 
nuclear@6: /* returns zero if it should NOT be printed and modifies xpos/ypos */
nuclear@6: /* implemented in font.c */
nuclear@6: struct dtx_glyphmap *dtx_proc_char(int code, float *xpos, float *ypos);
nuclear@6: 
nuclear@0: #endif	/* TEXT_IMPL_H_ */