netsurf/frontends/framebuffer/font.h
2016-05-15 13:44:34 +01:00

69 lines
2.2 KiB
C

/*
* Copyright 2008 Vincent Sanders <vince@simtec.co.uk>
*
* 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 NETSURF_FB_FONT_H
#define NETSURF_FB_FONT_H
extern struct gui_layout_table *framebuffer_layout_table;
extern struct gui_utf8_table *framebuffer_utf8_table;
/**
* Initialise framebuffer font handling.
*/
bool fb_font_init(void);
/**
* Finalise framebuffer font handling.
*/
bool fb_font_finalise(void);
/**
* Find the position in a string where an x coordinate falls.
*
* \param[in] fstyle style for this text
* \param[in] string UTF-8 string to measure
* \param[in] length length of string, in bytes
* \param[in] x coordinate to search for
* \param[out] char_offset updated to offset in string of actual_x, [0..length]
* \param[out] actual_x updated to x coordinate of character closest to x
* \return NSERROR_OK and char_offset and actual_x updated or
* appropriate error code on faliure
*/
nserror fb_font_position(const struct plot_font_style *fstyle, const char *string, size_t length, int x, size_t *char_offset, int *actual_x);
/**
* Measure the width of a string.
*
* \param[in] fstyle plot style for this text
* \param[in] string UTF-8 string to measure
* \param[in] length length of string, in bytes
* \param[out] width updated to width of string[0..length)
* \return NSERROR_OK and width updated or appropriate error code on faliure
*/
nserror fb_font_width(const struct plot_font_style *fstyle, const char *string, size_t length, int *width);
#ifdef FB_USE_FREETYPE
#include "framebuffer/font_freetype.h"
#else
#include "framebuffer/font_internal.h"
#endif
#endif /* NETSURF_FB_FONT_H */