fontplot.h

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/*
 * Copyright 2010 Ole Loots <ole@monochrom.net>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf 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; version 2 of the License.
 *
 * NetSurf 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, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef FONT_PLOT_H
#define FONT_PLOT_H
 
typedef struct s_font_plotter * FONT_PLOTTER;
 
struct s_font_driver_table_entry
{
        const char * name;
        int (*ctor)( FONT_PLOTTER self );
        int flags;
};
 
/* declaration of font plotter member functions: (_fpmf_ prefix) */
typedef int (*_fpmf_str_width)( FONT_PLOTTER self, const plot_font_style_t *fstyle,
                                                const char * str, size_t length, int * width);
typedef int (*_fpmf_str_split)( FONT_PLOTTER self, const plot_font_style_t *fstyle,
                                                const char *string, size_t length,
                                                int x, size_t *char_offset, int *actual_x);
typedef int (*_fpmf_pixel_pos)( FONT_PLOTTER self, const plot_font_style_t *fstyle,
                                                const char *string, size_t length,
                                                int x, size_t *char_offset, int *actual_x);
typedef int (*_fpmf_text)( FONT_PLOTTER self, int x, int y, const char *text,
                                                                                                        size_t length, const plot_font_style_t *fstyle);
 
typedef void (*_fpmf_draw_glyph)(FONT_PLOTTER self, GRECT * clip, GRECT * loc,
                                                                uint8_t * pixdata, int pitch, uint32_t colour);
typedef int (*_fpmf_dtor)( FONT_PLOTTER self );
 
 
/* prototype of the font plotter "object" */
struct s_font_plotter
{
        char * name;
        int flags;
        int vdi_handle;
        void * priv_data;
 
        _fpmf_str_width str_width;
        _fpmf_str_split str_split;
        _fpmf_pixel_pos pixel_pos;
        _fpmf_text text;
        _fpmf_draw_glyph draw_glyph;
        _fpmf_dtor dtor;
};
 
 
FONT_PLOTTER plot_get_text_plotter(void);
/* Set the font plotting engine. 
*/
void plot_set_text_plotter(FONT_PLOTTER font_plotter);
void dump_font_drivers(void);
FONT_PLOTTER new_font_plotter( int vdihandle, char * name, unsigned long flags,
                int * error);
int delete_font_plotter( FONT_PLOTTER p );
 
#ifdef WITH_VDI_FONT_DRIVER
 #include "atari/plot/font_vdi.h"
#endif
#ifdef WITH_INTERNAL_FONT_DRIVER
 #include "atari/plot/font_internal.h"
#endif
#ifdef WITH_FREETYPE_FONT_DRIVER
 #include "atari/plot/font_freetype.h"
#endif
 
 
 
#endif