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/*
* Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
*
* 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_CSS_UTILS_H_
#define NETSURF_CSS_UTILS_H_
#include <libcss/libcss.h>
#include "netsurf/css.h"
/** DPI of the screen, in fixed point units */
extern css_fixed nscss_screen_dpi;
/**
* Convert an absolute CSS length to points.
*
* \param[in] length Absolute CSS length.
* \param[in] unit Unit of the length.
* \return length in points
*/
css_fixed nscss_len2pt(css_fixed length, css_unit unit);
/**
* Convert a CSS length to pixels.
*
* \param length Length to convert
* \param unit Corresponding unit
* \param style Computed style applying to length. May be NULL if unit is
* neither em nor ex
* \return length in pixels
*/
css_fixed nscss_len2px(css_fixed length, css_unit unit, const css_computed_style *style);
#endif
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