mirror of
https://github.com/netsurf-browser/netsurf
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119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
/*
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* Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef NETSURF_CSS_UTILS_H_
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#define NETSURF_CSS_UTILS_H_
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#include <libcss/libcss.h>
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#include "netsurf/css.h"
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/** DPI of the screen, in fixed point units */
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extern css_fixed nscss_screen_dpi;
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/**
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* Convert an absolute CSS length to points.
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*
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* \param[in] length Absolute CSS length.
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* \param[in] unit Unit of the length.
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* \return length in points
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*/
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css_fixed nscss_len2pt(css_fixed length, css_unit unit);
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/**
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* Convert a CSS length to pixels.
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*
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* \param length Length to convert
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* \param unit Corresponding unit
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* \param style Computed style applying to length. May be NULL if unit is
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* neither em nor ex
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* \return length in pixels
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*/
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css_fixed nscss_len2px(css_fixed length, css_unit unit, const css_computed_style *style);
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/**
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* Temporary helper wrappers for for libcss computed style getter, while
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* we don't support flexbox related property values.
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*/
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static inline uint8_t ns_computed_display(
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const css_computed_style *style, bool root)
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{
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uint8_t value = css_computed_display(style, root);
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if (value == CSS_DISPLAY_FLEX) {
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return CSS_DISPLAY_BLOCK;
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} else if (value == CSS_DISPLAY_INLINE_FLEX) {
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return CSS_DISPLAY_INLINE_BLOCK;
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}
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return value;
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}
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static inline uint8_t ns_computed_display_static(
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const css_computed_style *style)
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{
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uint8_t value = css_computed_display_static(style);
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if (value == CSS_DISPLAY_FLEX) {
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return CSS_DISPLAY_BLOCK;
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} else if (value == CSS_DISPLAY_INLINE_FLEX) {
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return CSS_DISPLAY_INLINE_BLOCK;
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}
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return value;
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}
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static inline uint8_t ns_computed_min_height(
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const css_computed_style *style,
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css_fixed *length, css_unit *unit)
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{
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uint8_t value = css_computed_min_height(style, length, unit);
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if (value == CSS_MIN_HEIGHT_AUTO) {
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value = CSS_MIN_HEIGHT_SET;
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*length = 0;
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*unit = CSS_UNIT_PX;
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}
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return value;
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}
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static inline uint8_t ns_computed_min_width(
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const css_computed_style *style,
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css_fixed *length, css_unit *unit)
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{
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uint8_t value = css_computed_min_width(style, length, unit);
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if (value == CSS_MIN_WIDTH_AUTO) {
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value = CSS_MIN_WIDTH_SET;
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*length = 0;
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*unit = CSS_UNIT_PX;
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}
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return value;
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}
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#endif
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