diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/libcss/computed.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/libcss/computed.h b/include/libcss/computed.h index f89d434..b2a8c0d 100644 --- a/include/libcss/computed.h +++ b/include/libcss/computed.h @@ -1655,4 +1655,43 @@ static inline uint8_t css_computed_white_space( #undef WHITE_SPACE_SHIFT #undef WHITE_SPACE_INDEX +#define BACKGROUND_POSITION_INDEX 27 +#define BACKGROUND_POSITION_SHIFT 7 +#define BACKGROUND_POSITION_MASK 0x80 +#define BACKGROUND_POSITION_INDEX1 26 +#define BACKGROUND_POSITION_SHIFT1 0 +#define BACKGROUND_POSITION_MASK1 0xff +static inline uint8_t css_computed_background_position( + const css_computed_style *style, + css_fixed *hlength, css_unit *hunit, + css_fixed *vlength, css_unit *vunit) +{ + uint8_t bits = style->bits[BACKGROUND_POSITION_INDEX]; + bits &= BACKGROUND_POSITION_MASK; + bits >>= BACKGROUND_POSITION_SHIFT; + + /* 1bit: type */ + if (bits == CSS_BACKGROUND_POSITION_SET) { + uint8_t bits1 = style->bits[BACKGROUND_POSITION_INDEX1]; + bits1 &= BACKGROUND_POSITION_MASK1; + bits1 >>= BACKGROUND_POSITION_SHIFT1; + + /* 8bits: hhhhvvvv : hunit | vunit */ + *hlength = style->background_position[0]; + *hunit = bits1 >> 4; + + *vlength = style->background_position[1]; + *hunit = bits1 & 0xf; + } + + return bits; +} +#undef BACKGROUND_POSITION_MASK1 +#undef BACKGROUND_POSITION_SHIFT1 +#undef BACKGROUND_POSITION_INDEX1 +#undef BACKGROUND_POSITION_MASK +#undef BACKGROUND_POSITION_SHIFT +#undef BACKGROUND_POSITION_INDEX + + #endif |