/*
* 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 "css/css.h"
#include "desktop/plot_style.h"
/* DPI of the screen, in fixed point units */
extern css_fixed nscss_screen_dpi;
/**
* Convert a CSS color to a NetSurf colour primitive
*
* ARGB -> (1-A)BGR
*
* \param color The CSS color to convert
* \return Corresponding NetSurf colour primitive
*/
#define nscss_color_to_ns(color) \
(0xff000000 - ((color) & 0xff000000)) | \
(((color) & 0xff0000) >> 16) | \
((color) & 0xff00) | \
(((color) & 0xff) << 16)
/**
* Determine if a CSS color primitive is transparent
*
* \param color The CSS color to consider
* \return True if the color is transparent, false otherwise
*/
#define nscss_color_is_transparent(color) \
(((color) >> 24) == 0)
css_fixed nscss_len2pt(css_fixed length, css_unit unit);
css_fixed nscss_len2px(css_fixed length, css_unit unit,
const css_computed_style *style);
#endif