diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/libcss/computed.h | 124 | ||||
| -rw-r--r-- | include/libcss/types.h | 30 |
2 files changed, 149 insertions, 5 deletions
diff --git a/include/libcss/computed.h b/include/libcss/computed.h index 18230b9..15f5941 100644 --- a/include/libcss/computed.h +++ b/include/libcss/computed.h @@ -70,7 +70,7 @@ typedef struct css_computed_uncommon { * * Bit allocations: * - * 01234567 + * 76543210 * 1 llllllcc letter-spacing | outline-color * 2 ooooooob outline-width | border-spacing * 3 bbbbbbbb border-spacing @@ -192,7 +192,7 @@ struct css_computed_style { * * Bit allocations: * - * 01234567 + * 76543210 * 1 vvvvvvvv vertical-align * 2 ffffffff font-size * 3 ttttttti border-top-width | background-image @@ -287,4 +287,124 @@ css_error css_computed_style_compose(const css_computed_style *parent, const css_computed_style *child, css_computed_style *result); +/****************************************************************************** + * Property accessors below here * + ******************************************************************************/ + +#define LETTER_SPACING_INDEX 0 +#define LETTER_SPACING_SHIFT 2 +#define LETTER_SPACING_MASK 0xfc +static inline uint8_t css_computed_letter_spacing( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + if (style->uncommon != NULL) { + uint8_t bits = style->uncommon->bits[LETTER_SPACING_INDEX]; + bits &= LETTER_SPACING_MASK; + bits >>= LETTER_SPACING_SHIFT; + + /* 6bits: uuuutt : unit | type */ + + if ((bits & 3) == CSS_LETTER_SPACING_SET) { + *length = style->uncommon->letter_spacing; + *unit = bits >> 2; + return CSS_LETTER_SPACING_SET; + } + } + + return CSS_LETTER_SPACING_NORMAL; +} +#undef LETTER_SPACING_MASK +#undef LETTER_SPACING_SHIFT +#undef LETTER_SPACING_INDEX + +#define OUTLINE_COLOR_INDEX 0 +#define OUTLINE_COLOR_SHIFT 0 +#define OUTLINE_COLOR_MASK 0x3 +static inline uint8_t css_computed_outline_color( + const css_computed_style *style, css_color *color) +{ + if (style->uncommon != NULL) { + uint8_t bits = style->uncommon->bits[OUTLINE_COLOR_INDEX]; + bits &= OUTLINE_COLOR_MASK; + bits >>= OUTLINE_COLOR_SHIFT; + + /* 2bits: tt : type */ + + if ((bits & 3) == CSS_OUTLINE_COLOR_COLOR) { + *color = style->uncommon->outline_color; + return CSS_OUTLINE_COLOR_COLOR; + } + } + + return CSS_OUTLINE_COLOR_INVERT; +} +#undef OUTLINE_COLOR_MASK +#undef OUTLINE_COLOR_SHIFT +#undef OUTLINE_COLOR_INDEX + +#define OUTLINE_WIDTH_INDEX 1 +#define OUTLINE_WIDTH_SHIFT 1 +#define OUTLINE_WIDTH_MASK 0xfe +static inline uint8_t css_computed_outline_width( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + if (style->uncommon != NULL) { + uint8_t bits = style->uncommon->bits[OUTLINE_WIDTH_INDEX]; + bits &= OUTLINE_WIDTH_MASK; + bits >>= OUTLINE_WIDTH_SHIFT; + + /* 7bits: uuuuttt : unit | type */ + + if ((bits & 7) == CSS_OUTLINE_WIDTH_WIDTH) { + *length = style->uncommon->outline_width; + *unit = bits >> 3; + return CSS_OUTLINE_WIDTH_WIDTH; + } else + return (bits & 7); + } + + return CSS_OUTLINE_WIDTH_MEDIUM; +} +#undef OUTLINE_WIDTH_MASK +#undef OUTLINE_WIDTH_SHIFT +#undef OUTLINE_WIDTH_INDEX + +#define BORDER_SPACING_INDEX 2 +#define BORDER_SPACING_SHIFT 0 +#define BORDER_SPACING_MASK 0xff +static inline uint8_t css_computed_border_spacing( + const css_computed_style *style, + css_fixed *hlength, css_unit *hunit, + css_fixed *vlength, css_unit *vunit) +{ + if (style->uncommon != NULL) { + uint8_t bits = style->uncommon->bits[BORDER_SPACING_INDEX]; + bits &= BORDER_SPACING_MASK; + bits >>= BORDER_SPACING_SHIFT; + + /* There's actually a ninth bit (bit 0 of the previous byte) + * This encodes SET/INHERIT. Given that we must be SET here, + * we don't bother looking at it */ + + /* 8bits: hhhhvvvv : hunit | vunit */ + + *hlength = style->uncommon->border_spacing[0]; + *hunit = bits >> 4; + + *vlength = style->uncommon->border_spacing[1]; + *vunit = bits & 0xf; + } else { + *hlength = *vlength = 0; + *hunit = *vunit = CSS_UNIT_PX; + } + + return CSS_BORDER_SPACING_SET; +} +#undef BORDER_SPACING_MASK +#undef BORDER_SPACING_SHIFT +#undef BORDER_SPACING_INDEX + + #endif diff --git a/include/libcss/types.h b/include/libcss/types.h index 640ef50..9b8da8f 100644 --- a/include/libcss/types.h +++ b/include/libcss/types.h @@ -46,9 +46,9 @@ typedef enum css_media_type { * Stylesheet origin */ typedef enum css_origin { - CSS_ORIGIN_UA = 0, /**< User agent stylesheet */ - CSS_ORIGIN_USER = 1, /**< User stylesheet */ - CSS_ORIGIN_AUTHOR = 2 /**< Author stylesheet */ + CSS_ORIGIN_UA = 0, /**< User agent stylesheet */ + CSS_ORIGIN_USER = 1, /**< User stylesheet */ + CSS_ORIGIN_AUTHOR = 2 /**< Author stylesheet */ } css_origin; /** @@ -66,6 +66,30 @@ typedef uint32_t css_color; /** \todo Do we want to make utils/fp*.h public? */ typedef int32_t css_fixed; +/* CSS unit */ +typedef enum css_unit { + CSS_UNIT_PX = 0x0, + CSS_UNIT_EX = 0x1, + CSS_UNIT_EM = 0x2, + CSS_UNIT_IN = 0x3, + CSS_UNIT_CM = 0x4, + CSS_UNIT_MM = 0x5, + CSS_UNIT_PT = 0x6, + CSS_UNIT_PC = 0x7, + + CSS_UNIT_PCT = 0x8, /* Percentage */ + + CSS_UNIT_DEG = 0x9, + CSS_UNIT_GRAD = 0xa, + CSS_UNIT_RAD = 0xb, + + CSS_UNIT_MS = 0xc, + CSS_UNIT_S = 0xd, + + CSS_UNIT_HZ = 0xe, + CSS_UNIT_KHZ = 0xf +} css_unit; + typedef struct css_stylesheet css_stylesheet; typedef struct css_select_ctx css_select_ctx; |