diff options
Diffstat (limited to 'content/handlers/css/utils.h')
-rw-r--r-- | content/handlers/css/utils.h | 115 |
1 files changed, 107 insertions, 8 deletions
diff --git a/content/handlers/css/utils.h b/content/handlers/css/utils.h index 58a5ea6e6..c8f4c82f4 100644 --- a/content/handlers/css/utils.h +++ b/content/handlers/css/utils.h @@ -27,23 +27,122 @@ extern css_fixed nscss_screen_dpi; /** + * Length conversion context data. + */ +typedef struct nscss_len_ctx { + /** + * Viewport width in px. + * Only used if unit is vh, vw, vi, vb, vmin, or vmax. + */ + int vw; + /** + * Viewport height in px. + * Only used if unit is vh, vw, vi, vb, vmin, or vmax. + */ + int vh; + /** + * Computed style for the document root element. + * May be NULL if unit is not rem, or rlh. + */ + const css_computed_style *root_style; +} nscss_len_ctx; + +/** * Convert an absolute CSS length to points. * - * \param[in] length Absolute CSS length. - * \param[in] unit Unit of the length. + * \param[in] ctx Length conversion context. + * \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); +css_fixed nscss_len2pt( + const nscss_len_ctx *ctx, + 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 + * \param[in] ctx Length conversion context. + * \param[in] length Length to convert. + * \param[in] unit Corresponding unit. + * \param[in] style Computed style applying to length. + * May be NULL if unit is not em, ex, cap, ch, or ic. * \return length in pixels */ -css_fixed nscss_len2px(css_fixed length, css_unit unit, const css_computed_style *style); +css_fixed nscss_len2px( + const nscss_len_ctx *ctx, + css_fixed length, + css_unit unit, + const css_computed_style *style); + + +/** + * Temporary helper wrappers for for libcss computed style getter, while + * we don't support flexbox related property values. + */ + +static inline uint8_t ns_computed_display( + const css_computed_style *style, bool root) +{ + uint8_t value = css_computed_display(style, root); + + if (value == CSS_DISPLAY_FLEX) { + return CSS_DISPLAY_BLOCK; + + } else if (value == CSS_DISPLAY_INLINE_FLEX) { + return CSS_DISPLAY_INLINE_BLOCK; + } + + return value; +} + + +static inline uint8_t ns_computed_display_static( + const css_computed_style *style) +{ + uint8_t value = css_computed_display_static(style); + + if (value == CSS_DISPLAY_FLEX) { + return CSS_DISPLAY_BLOCK; + + } else if (value == CSS_DISPLAY_INLINE_FLEX) { + return CSS_DISPLAY_INLINE_BLOCK; + } + + return value; +} + + +static inline uint8_t ns_computed_min_height( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t value = css_computed_min_height(style, length, unit); + + if (value == CSS_MIN_HEIGHT_AUTO) { + value = CSS_MIN_HEIGHT_SET; + *length = 0; + *unit = CSS_UNIT_PX; + } + + return value; +} + + +static inline uint8_t ns_computed_min_width( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t value = css_computed_min_width(style, length, unit); + + if (value == CSS_MIN_WIDTH_AUTO) { + value = CSS_MIN_WIDTH_SET; + *length = 0; + *unit = CSS_UNIT_PX; + } + + return value; +} #endif |