From feb0de14741e709472952abf5f7101a28a377c07 Mon Sep 17 00:00:00 2001 From: Daniel Silverstone Date: Sat, 12 Mar 2011 15:55:49 +0000 Subject: Hide the CSS computed style itself. Only expose a few simple structures which we can keep sane. All property accessors are thus hidden behind a link symbol for ABI safety svn path=/trunk/libcss/; revision=11969 --- src/select/computed.c | 1847 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1847 insertions(+) (limited to 'src/select/computed.c') diff --git a/src/select/computed.c b/src/select/computed.c index ee667e2..198b243 100644 --- a/src/select/computed.c +++ b/src/select/computed.c @@ -314,6 +314,1853 @@ css_error css_computed_style_compose(const css_computed_style *parent, return css__compute_absolute_values(parent, result, compute_font_size, pw); } +/****************************************************************************** + * Property accessors * + ******************************************************************************/ + + +#define CSS_LETTER_SPACING_INDEX 0 +#define CSS_LETTER_SPACING_SHIFT 2 +#define CSS_LETTER_SPACING_MASK 0xfc +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[CSS_LETTER_SPACING_INDEX]; + bits &= CSS_LETTER_SPACING_MASK; + bits >>= CSS_LETTER_SPACING_SHIFT; + + /* 6bits: uuuutt : unit | type */ + + if ((bits & 3) == CSS_LETTER_SPACING_SET) { + *length = style->uncommon->letter_spacing; + *unit = (css_unit) (bits >> 2); + } + + return (bits & 3); + } + + return CSS_LETTER_SPACING_NORMAL; +} +#undef CSS_LETTER_SPACING_MASK +#undef CSS_LETTER_SPACING_SHIFT +#undef CSS_LETTER_SPACING_INDEX + +#define CSS_OUTLINE_COLOR_INDEX 0 +#define CSS_OUTLINE_COLOR_SHIFT 0 +#define CSS_OUTLINE_COLOR_MASK 0x3 +uint8_t css_computed_outline_color( + const css_computed_style *style, css_color *color) +{ + if (style->uncommon != NULL) { + uint8_t bits = style->uncommon->bits[CSS_OUTLINE_COLOR_INDEX]; + bits &= CSS_OUTLINE_COLOR_MASK; + bits >>= CSS_OUTLINE_COLOR_SHIFT; + + /* 2bits: tt : type */ + + if ((bits & 3) == CSS_OUTLINE_COLOR_COLOR) { + *color = style->uncommon->outline_color; + } + + return (bits & 3); + } + + return CSS_OUTLINE_COLOR_INVERT; +} +#undef CSS_OUTLINE_COLOR_MASK +#undef CSS_OUTLINE_COLOR_SHIFT +#undef CSS_OUTLINE_COLOR_INDEX + +#define CSS_OUTLINE_WIDTH_INDEX 1 +#define CSS_OUTLINE_WIDTH_SHIFT 1 +#define CSS_OUTLINE_WIDTH_MASK 0xfe +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[CSS_OUTLINE_WIDTH_INDEX]; + bits &= CSS_OUTLINE_WIDTH_MASK; + bits >>= CSS_OUTLINE_WIDTH_SHIFT; + + /* 7bits: uuuuttt : unit | type */ + + if ((bits & 7) == CSS_OUTLINE_WIDTH_WIDTH) { + *length = style->uncommon->outline_width; + *unit = (css_unit) (bits >> 3); + } + + return (bits & 7); + } + + *length = INTTOFIX(2); + *unit = CSS_UNIT_PX; + + return CSS_OUTLINE_WIDTH_WIDTH; +} +#undef CSS_OUTLINE_WIDTH_MASK +#undef CSS_OUTLINE_WIDTH_SHIFT +#undef CSS_OUTLINE_WIDTH_INDEX + +#define CSS_BORDER_SPACING_INDEX 1 +#define CSS_BORDER_SPACING_SHIFT 0 +#define CSS_BORDER_SPACING_MASK 0x1 +#define CSS_BORDER_SPACING_INDEX1 2 +#define CSS_BORDER_SPACING_SHIFT1 0 +#define CSS_BORDER_SPACING_MASK1 0xff +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[CSS_BORDER_SPACING_INDEX]; + bits &= CSS_BORDER_SPACING_MASK; + bits >>= CSS_BORDER_SPACING_SHIFT; + + /* 1 bit: type */ + if (bits == CSS_BORDER_SPACING_SET) { + uint8_t bits1 = + style->uncommon->bits[CSS_BORDER_SPACING_INDEX1]; + bits1 &= CSS_BORDER_SPACING_MASK1; + bits1 >>= CSS_BORDER_SPACING_SHIFT1; + + /* 8bits: hhhhvvvv : hunit | vunit */ + + *hlength = style->uncommon->border_spacing[0]; + *hunit = (css_unit) (bits1 >> 4); + + *vlength = style->uncommon->border_spacing[1]; + *vunit = (css_unit) (bits1 & 0xf); + } + + return bits; + } else { + *hlength = *vlength = 0; + *hunit = *vunit = CSS_UNIT_PX; + } + + return CSS_BORDER_SPACING_SET; +} +#undef CSS_BORDER_SPACING_MASK1 +#undef CSS_BORDER_SPACING_SHIFT1 +#undef CSS_BORDER_SPACING_INDEX1 +#undef CSS_BORDER_SPACING_MASK +#undef CSS_BORDER_SPACING_SHIFT +#undef CSS_BORDER_SPACING_INDEX + +#define CSS_WORD_SPACING_INDEX 3 +#define CSS_WORD_SPACING_SHIFT 2 +#define CSS_WORD_SPACING_MASK 0xfc +uint8_t css_computed_word_spacing( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + if (style->uncommon != NULL) { + uint8_t bits = style->uncommon->bits[CSS_WORD_SPACING_INDEX]; + bits &= CSS_WORD_SPACING_MASK; + bits >>= CSS_WORD_SPACING_SHIFT; + + /* 6bits: uuuutt : unit | type */ + + if ((bits & 3) == CSS_WORD_SPACING_SET) { + *length = style->uncommon->word_spacing; + *unit = (css_unit) (bits >> 2); + } + + return (bits & 3); + } + + return CSS_WORD_SPACING_NORMAL; +} +#undef CSS_WORD_SPACING_MASK +#undef CSS_WORD_SPACING_SHIFT +#undef CSS_WORD_SPACING_INDEX + +#define CSS_COUNTER_INCREMENT_INDEX 3 +#define CSS_COUNTER_INCREMENT_SHIFT 1 +#define CSS_COUNTER_INCREMENT_MASK 0x2 +uint8_t css_computed_counter_increment( + const css_computed_style *style, + const css_computed_counter **counters) +{ + if (style->uncommon != NULL) { + uint8_t bits = + style->uncommon->bits[CSS_COUNTER_INCREMENT_INDEX]; + bits &= CSS_COUNTER_INCREMENT_MASK; + bits >>= CSS_COUNTER_INCREMENT_SHIFT; + + /* 1bit: type */ + *counters = style->uncommon->counter_increment; + + return bits; + } + + return CSS_COUNTER_INCREMENT_NONE; +} +#undef CSS_COUNTER_INCREMENT_MASK +#undef CSS_COUNTER_INCREMENT_SHIFT +#undef CSS_COUNTER_INCREMENT_INDEX + +#define CSS_COUNTER_RESET_INDEX 3 +#define CSS_COUNTER_RESET_SHIFT 0 +#define CSS_COUNTER_RESET_MASK 0x1 +uint8_t css_computed_counter_reset( + const css_computed_style *style, + const css_computed_counter **counters) +{ + if (style->uncommon != NULL) { + uint8_t bits = style->uncommon->bits[CSS_COUNTER_RESET_INDEX]; + bits &= CSS_COUNTER_RESET_MASK; + bits >>= CSS_COUNTER_RESET_SHIFT; + + /* 1bit: type */ + *counters = style->uncommon->counter_reset; + + return bits; + } + + return CSS_COUNTER_RESET_NONE; +} +#undef CSS_COUNTER_RESET_MASK +#undef CSS_COUNTER_RESET_SHIFT +#undef CSS_COUNTER_RESET_INDEX + +#define CSS_CURSOR_INDEX 4 +#define CSS_CURSOR_SHIFT 3 +#define CSS_CURSOR_MASK 0xf8 +uint8_t css_computed_cursor( + const css_computed_style *style, + lwc_string ***urls) +{ + if (style->uncommon != NULL) { + uint8_t bits = style->uncommon->bits[CSS_CURSOR_INDEX]; + bits &= CSS_CURSOR_MASK; + bits >>= CSS_CURSOR_SHIFT; + + /* 5bits: type */ + *urls = style->uncommon->cursor; + + return bits; + } + + return CSS_CURSOR_AUTO; +} +#undef CSS_CURSOR_MASK +#undef CSS_CURSOR_SHIFT +#undef CSS_CURSOR_INDEX + +#define CSS_CLIP_INDEX 7 +#define CSS_CLIP_SHIFT 2 +#define CSS_CLIP_MASK 0xfc +#define CSS_CLIP_INDEX1 5 +#define CSS_CLIP_SHIFT1 0 +#define CSS_CLIP_MASK1 0xff +#define CSS_CLIP_INDEX2 6 +#define CSS_CLIP_SHIFT2 0 +#define CSS_CLIP_MASK2 0xff +uint8_t css_computed_clip( + const css_computed_style *style, + css_computed_clip_rect *rect) +{ + if (style->uncommon != NULL) { + uint8_t bits = style->uncommon->bits[CSS_CLIP_INDEX]; + bits &= CSS_CLIP_MASK; + bits >>= CSS_CLIP_SHIFT; + + /* 6bits: trblyy : top | right | bottom | left | type */ + if ((bits & 0x3) == CSS_CLIP_RECT) { + uint8_t bits1; + + rect->left_auto = (bits & 0x4); + rect->bottom_auto = (bits & 0x8); + rect->right_auto = (bits & 0x10); + rect->top_auto = (bits & 0x20); + + if (rect->top_auto == false || + rect->right_auto == false) { + /* 8bits: ttttrrrr : top | right */ + bits1 = style->uncommon->bits[CSS_CLIP_INDEX1]; + bits1 &= CSS_CLIP_MASK1; + bits1 >>= CSS_CLIP_SHIFT1; + } else { + bits1 = 0; + } + + rect->top = style->uncommon->clip[0]; + rect->tunit = (css_unit) (bits1 >> 4); + + rect->right = style->uncommon->clip[1]; + rect->runit = (css_unit) (bits1 & 0xf); + + if (rect->bottom_auto == false || + rect->left_auto == false) { + /* 8bits: bbbbllll : bottom | left */ + bits1 = style->uncommon->bits[CSS_CLIP_INDEX2]; + bits1 &= CSS_CLIP_MASK2; + bits1 >>= CSS_CLIP_SHIFT2; + } else { + bits1 = 0; + } + + rect->bottom = style->uncommon->clip[2]; + rect->bunit = (css_unit) (bits1 >> 4); + + rect->left = style->uncommon->clip[3]; + rect->lunit = (css_unit) (bits1 & 0xf); + } + + return (bits & 0x3); + } + + return CSS_CLIP_AUTO; +} +#undef CSS_CLIP_MASK2 +#undef CSS_CLIP_SHIFT2 +#undef CSS_CLIP_INDEX2 +#undef CSS_CLIP_MASK1 +#undef CSS_CLIP_SHIFT1 +#undef CSS_CLIP_INDEX1 +#undef CSS_CLIP_MASK +#undef CSS_CLIP_SHIFT +#undef CSS_CLIP_INDEX + +#define CSS_CONTENT_INDEX 7 +#define CSS_CONTENT_SHIFT 0 +#define CSS_CONTENT_MASK 0x3 +uint8_t css_computed_content( + const css_computed_style *style, + const css_computed_content_item **content) +{ + if (style->uncommon != NULL) { + uint8_t bits = style->uncommon->bits[CSS_CONTENT_INDEX]; + bits &= CSS_CONTENT_MASK; + bits >>= CSS_CONTENT_SHIFT; + + /* 2bits: type */ + *content = style->uncommon->content; + + return bits; + } + + return CSS_CONTENT_NORMAL; +} +#undef CSS_CONTENT_MASK +#undef CSS_CONTENT_SHIFT +#undef CSS_CONTENT_INDEX + +#define CSS_VERTICAL_ALIGN_INDEX 0 +#define CSS_VERTICAL_ALIGN_SHIFT 0 +#define CSS_VERTICAL_ALIGN_MASK 0xff +uint8_t css_computed_vertical_align( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_VERTICAL_ALIGN_INDEX]; + bits &= CSS_VERTICAL_ALIGN_MASK; + bits >>= CSS_VERTICAL_ALIGN_SHIFT; + + /* 8bits: uuuutttt : units | type */ + if ((bits & 0xf) == CSS_VERTICAL_ALIGN_SET) { + *length = style->vertical_align; + *unit = (css_unit) (bits >> 4); + } + + return (bits & 0xf); +} +#undef CSS_VERTICAL_ALIGN_MASK +#undef CSS_VERTICAL_ALIGN_SHIFT +#undef CSS_VERTICAL_ALIGN_INDEX + +#define CSS_FONT_SIZE_INDEX 1 +#define CSS_FONT_SIZE_SHIFT 0 +#define CSS_FONT_SIZE_MASK 0xff +uint8_t css_computed_font_size( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_FONT_SIZE_INDEX]; + bits &= CSS_FONT_SIZE_MASK; + bits >>= CSS_FONT_SIZE_SHIFT; + + /* 8bits: uuuutttt : units | type */ + if ((bits & 0xf) == CSS_FONT_SIZE_DIMENSION) { + *length = style->font_size; + *unit = (css_unit) (bits >> 4); + } + + return (bits & 0xf); +} +#undef CSS_FONT_SIZE_MASK +#undef CSS_FONT_SIZE_SHIFT +#undef CSS_FONT_SIZE_INDEX + +#define CSS_BORDER_TOP_WIDTH_INDEX 2 +#define CSS_BORDER_TOP_WIDTH_SHIFT 1 +#define CSS_BORDER_TOP_WIDTH_MASK 0xfe +uint8_t css_computed_border_top_width( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_BORDER_TOP_WIDTH_INDEX]; + bits &= CSS_BORDER_TOP_WIDTH_MASK; + bits >>= CSS_BORDER_TOP_WIDTH_SHIFT; + + /* 7bits: uuuuttt : units | type */ + if ((bits & 0x7) == CSS_BORDER_WIDTH_WIDTH) { + *length = style->border_width[0]; + *unit = (css_unit) (bits >> 3); + } + + return (bits & 0x7); +} +#undef CSS_BORDER_TOP_WIDTH_MASK +#undef CSS_BORDER_TOP_WIDTH_SHIFT +#undef CSS_BORDER_TOP_WIDTH_INDEX + +#define CSS_BORDER_RIGHT_WIDTH_INDEX 3 +#define CSS_BORDER_RIGHT_WIDTH_SHIFT 1 +#define CSS_BORDER_RIGHT_WIDTH_MASK 0xfe +uint8_t css_computed_border_right_width( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_BORDER_RIGHT_WIDTH_INDEX]; + bits &= CSS_BORDER_RIGHT_WIDTH_MASK; + bits >>= CSS_BORDER_RIGHT_WIDTH_SHIFT; + + /* 7bits: uuuuttt : units | type */ + if ((bits & 0x7) == CSS_BORDER_WIDTH_WIDTH) { + *length = style->border_width[1]; + *unit = (css_unit) (bits >> 3); + } + + return (bits & 0x7); +} +#undef CSS_BORDER_RIGHT_WIDTH_MASK +#undef CSS_BORDER_RIGHT_WIDTH_SHIFT +#undef CSS_BORDER_RIGHT_WIDTH_INDEX + +#define CSS_BORDER_BOTTOM_WIDTH_INDEX 4 +#define CSS_BORDER_BOTTOM_WIDTH_SHIFT 1 +#define CSS_BORDER_BOTTOM_WIDTH_MASK 0xfe +uint8_t css_computed_border_bottom_width( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_BORDER_BOTTOM_WIDTH_INDEX]; + bits &= CSS_BORDER_BOTTOM_WIDTH_MASK; + bits >>= CSS_BORDER_BOTTOM_WIDTH_SHIFT; + + /* 7bits: uuuuttt : units | type */ + if ((bits & 0x7) == CSS_BORDER_WIDTH_WIDTH) { + *length = style->border_width[2]; + *unit = (css_unit) (bits >> 3); + } + + return (bits & 0x7); +} +#undef CSS_BORDER_BOTTOM_WIDTH_MASK +#undef CSS_BORDER_BOTTOM_WIDTH_SHIFT +#undef CSS_BORDER_BOTTOM_WIDTH_INDEX + +#define CSS_BORDER_LEFT_WIDTH_INDEX 5 +#define CSS_BORDER_LEFT_WIDTH_SHIFT 1 +#define CSS_BORDER_LEFT_WIDTH_MASK 0xfe +uint8_t css_computed_border_left_width( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_BORDER_LEFT_WIDTH_INDEX]; + bits &= CSS_BORDER_LEFT_WIDTH_MASK; + bits >>= CSS_BORDER_LEFT_WIDTH_SHIFT; + + /* 7bits: uuuuttt : units | type */ + if ((bits & 0x7) == CSS_BORDER_WIDTH_WIDTH) { + *length = style->border_width[3]; + *unit = (css_unit) (bits >> 3); + } + + return (bits & 0x7); +} +#undef CSS_BORDER_LEFT_WIDTH_MASK +#undef CSS_BORDER_LEFT_WIDTH_SHIFT +#undef CSS_BORDER_LEFT_WIDTH_INDEX + +#define CSS_BACKGROUND_IMAGE_INDEX 2 +#define CSS_BACKGROUND_IMAGE_SHIFT 0 +#define CSS_BACKGROUND_IMAGE_MASK 0x1 +uint8_t css_computed_background_image( + const css_computed_style *style, + lwc_string **url) +{ + uint8_t bits = style->bits[CSS_BACKGROUND_IMAGE_INDEX]; + bits &= CSS_BACKGROUND_IMAGE_MASK; + bits >>= CSS_BACKGROUND_IMAGE_SHIFT; + + /* 1bit: type */ + *url = style->background_image; + + return bits; +} +#undef CSS_BACKGROUND_IMAGE_MASK +#undef CSS_BACKGROUND_IMAGE_SHIFT +#undef CSS_BACKGROUND_IMAGE_INDEX + +#define CSS_COLOR_INDEX 3 +#define CSS_COLOR_SHIFT 0 +#define CSS_COLOR_MASK 0x1 +uint8_t css_computed_color( + const css_computed_style *style, + css_color *color) +{ + uint8_t bits = style->bits[CSS_COLOR_INDEX]; + bits &= CSS_COLOR_MASK; + bits >>= CSS_COLOR_SHIFT; + + /* 1bit: type */ + *color = style->color; + + return bits; +} +#undef CSS_COLOR_MASK +#undef CSS_COLOR_SHIFT +#undef CSS_COLOR_INDEX + +#define CSS_LIST_STYLE_IMAGE_INDEX 4 +#define CSS_LIST_STYLE_IMAGE_SHIFT 0 +#define CSS_LIST_STYLE_IMAGE_MASK 0x1 +uint8_t css_computed_list_style_image( + const css_computed_style *style, + lwc_string **url) +{ + uint8_t bits = style->bits[CSS_LIST_STYLE_IMAGE_INDEX]; + bits &= CSS_LIST_STYLE_IMAGE_MASK; + bits >>= CSS_LIST_STYLE_IMAGE_SHIFT; + + /* 1bit: type */ + *url = style->list_style_image; + + return bits; +} +#undef CSS_LIST_STYLE_IMAGE_MASK +#undef CSS_LIST_STYLE_IMAGE_SHIFT +#undef CSS_LIST_STYLE_IMAGE_INDEX + +#define CSS_QUOTES_INDEX 5 +#define CSS_QUOTES_SHIFT 0 +#define CSS_QUOTES_MASK 0x1 +uint8_t css_computed_quotes( + const css_computed_style *style, + lwc_string ***quotes) +{ + uint8_t bits = style->bits[CSS_QUOTES_INDEX]; + bits &= CSS_QUOTES_MASK; + bits >>= CSS_QUOTES_SHIFT; + + /* 1bit: type */ + *quotes = style->quotes; + + return bits; +} +#undef CSS_QUOTES_MASK +#undef CSS_QUOTES_SHIFT +#undef CSS_QUOTES_INDEX + +#define CSS_TOP_INDEX 6 +#define CSS_TOP_SHIFT 2 +#define CSS_TOP_MASK 0xfc +#define CSS_RIGHT_INDEX 7 +#define CSS_RIGHT_SHIFT 2 +#define CSS_RIGHT_MASK 0xfc +#define CSS_BOTTOM_INDEX 8 +#define CSS_BOTTOM_SHIFT 2 +#define CSS_BOTTOM_MASK 0xfc +#define CSS_LEFT_INDEX 9 +#define CSS_LEFT_SHIFT 2 +#define CSS_LEFT_MASK 0xfc +uint8_t css_computed_top( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_TOP_INDEX]; + bits &= CSS_TOP_MASK; + bits >>= CSS_TOP_SHIFT; + + /* Fix up, based on computed position */ + if (css_computed_position(style) == CSS_POSITION_STATIC) { + /* Static -> auto */ + bits = CSS_TOP_AUTO; + } else if (css_computed_position(style) == CSS_POSITION_RELATIVE) { + /* Relative -> follow $9.4.3 */ + uint8_t bottom = style->bits[CSS_BOTTOM_INDEX]; + bottom &= CSS_BOTTOM_MASK; + bottom >>= CSS_BOTTOM_SHIFT; + + if ((bits & 0x3) == CSS_TOP_AUTO && + (bottom & 0x3) == CSS_BOTTOM_AUTO) { + /* Both auto => 0px */ + *length = 0; + *unit = CSS_UNIT_PX; + } else if ((bits & 0x3) == CSS_TOP_AUTO) { + /* Top is auto => -bottom */ + *length = -style->bottom; + *unit = (css_unit) (bottom >> 2); + } else { + *length = style->top; + *unit = (css_unit) (bits >> 2); + } + + bits = CSS_TOP_SET; + } else if ((bits & 0x3) == CSS_TOP_SET) { + *length = style->top; + *unit = (css_unit) (bits >> 2); + } + + /* 6bits: uuuutt : units | type */ + return (bits & 0x3); +} + +uint8_t css_computed_right( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_RIGHT_INDEX]; + bits &= CSS_RIGHT_MASK; + bits >>= CSS_RIGHT_SHIFT; + + /* Fix up, based on computed position */ + if (css_computed_position(style) == CSS_POSITION_STATIC) { + /* Static -> auto */ + bits = CSS_RIGHT_AUTO; + } else if (css_computed_position(style) == CSS_POSITION_RELATIVE) { + /* Relative -> follow $9.4.3 */ + uint8_t left = style->bits[CSS_LEFT_INDEX]; + left &= CSS_LEFT_MASK; + left >>= CSS_LEFT_SHIFT; + + if ((bits & 0x3) == CSS_RIGHT_AUTO && + (left & 0x3) == CSS_LEFT_AUTO) { + /* Both auto => 0px */ + *length = 0; + *unit = CSS_UNIT_PX; + } else if ((bits & 0x3) == CSS_RIGHT_AUTO) { + /* Right is auto => -left */ + *length = -style->left; + *unit = (css_unit) (left >> 2); + } else { + /** \todo Consider containing block's direction + * if overconstrained */ + *length = style->right; + *unit = (css_unit) (bits >> 2); + } + + bits = CSS_RIGHT_SET; + } else if ((bits & 0x3) == CSS_RIGHT_SET) { + *length = style->right; + *unit = (css_unit) (bits >> 2); + } + + /* 6bits: uuuutt : units | type */ + return (bits & 0x3); +} + +uint8_t css_computed_bottom( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_BOTTOM_INDEX]; + bits &= CSS_BOTTOM_MASK; + bits >>= CSS_BOTTOM_SHIFT; + + /* Fix up, based on computed position */ + if (css_computed_position(style) == CSS_POSITION_STATIC) { + /* Static -> auto */ + bits = CSS_BOTTOM_AUTO; + } else if (css_computed_position(style) == CSS_POSITION_RELATIVE) { + /* Relative -> follow $9.4.3 */ + uint8_t top = style->bits[CSS_TOP_INDEX]; + top &= CSS_TOP_MASK; + top >>= CSS_TOP_SHIFT; + + if ((bits & 0x3) == CSS_BOTTOM_AUTO && + (top & 0x3) == CSS_TOP_AUTO) { + /* Both auto => 0px */ + *length = 0; + *unit = CSS_UNIT_PX; + } else if ((bits & 0x3) == CSS_BOTTOM_AUTO || + (top & 0x3) != CSS_TOP_AUTO) { + /* Bottom is auto or top is not auto => -top */ + *length = -style->top; + *unit = (css_unit) (top >> 2); + } else { + *length = style->bottom; + *unit = (css_unit) (bits >> 2); + } + + bits = CSS_BOTTOM_SET; + } else if ((bits & 0x3) == CSS_BOTTOM_SET) { + *length = style->bottom; + *unit = (css_unit) (bits >> 2); + } + + /* 6bits: uuuutt : units | type */ + return (bits & 0x3); +} + +uint8_t css_computed_left( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_LEFT_INDEX]; + bits &= CSS_LEFT_MASK; + bits >>= CSS_LEFT_SHIFT; + + /* Fix up, based on computed position */ + if (css_computed_position(style) == CSS_POSITION_STATIC) { + /* Static -> auto */ + bits = CSS_LEFT_AUTO; + } else if (css_computed_position(style) == CSS_POSITION_RELATIVE) { + /* Relative -> follow $9.4.3 */ + uint8_t right = style->bits[CSS_RIGHT_INDEX]; + right &= CSS_RIGHT_MASK; + right >>= CSS_RIGHT_SHIFT; + + if ((bits & 0x3) == CSS_LEFT_AUTO && + (right & 0x3) == CSS_RIGHT_AUTO) { + /* Both auto => 0px */ + *length = 0; + *unit = CSS_UNIT_PX; + } else if ((bits & 0x3) == CSS_LEFT_AUTO) { + /* Left is auto => -right */ + *length = -style->right; + *unit = (css_unit) (right >> 2); + } else { + /** \todo Consider containing block's direction + * if overconstrained */ + *length = style->left; + *unit = (css_unit) (bits >> 2); + } + + bits = CSS_LEFT_SET; + } else if ((bits & 0x3) == CSS_LEFT_SET) { + *length = style->left; + *unit = (css_unit) (bits >> 2); + } + + /* 6bits: uuuutt : units | type */ + return (bits & 0x3); +} +#undef CSS_LEFT_MASK +#undef CSS_LEFT_SHIFT +#undef CSS_LEFT_INDEX +#undef CSS_BOTTOM_MASK +#undef CSS_BOTTOM_SHIFT +#undef CSS_BOTTOM_INDEX +#undef CSS_RIGHT_MASK +#undef CSS_RIGHT_SHIFT +#undef CSS_RIGHT_INDEX +#undef CSS_TOP_MASK +#undef CSS_TOP_SHIFT +#undef CSS_TOP_INDEX + +#define CSS_BORDER_TOP_COLOR_INDEX 6 +#define CSS_BORDER_TOP_COLOR_SHIFT 0 +#define CSS_BORDER_TOP_COLOR_MASK 0x3 +uint8_t css_computed_border_top_color( + const css_computed_style *style, + css_color *color) +{ + uint8_t bits = style->bits[CSS_BORDER_TOP_COLOR_INDEX]; + bits &= CSS_BORDER_TOP_COLOR_MASK; + bits >>= CSS_BORDER_TOP_COLOR_SHIFT; + + /* 2bits: type */ + *color = style->border_color[0]; + + return bits; +} +#undef CSS_BORDER_TOP_COLOR_MASK +#undef CSS_BORDER_TOP_COLOR_SHIFT +#undef CSS_BORDER_TOP_COLOR_INDEX + +#define CSS_BORDER_RIGHT_COLOR_INDEX 7 +#define CSS_BORDER_RIGHT_COLOR_SHIFT 0 +#define CSS_BORDER_RIGHT_COLOR_MASK 0x3 +uint8_t css_computed_border_right_color( + const css_computed_style *style, + css_color *color) +{ + uint8_t bits = style->bits[CSS_BORDER_RIGHT_COLOR_INDEX]; + bits &= CSS_BORDER_RIGHT_COLOR_MASK; + bits >>= CSS_BORDER_RIGHT_COLOR_SHIFT; + + /* 2bits: type */ + *color = style->border_color[1]; + + return bits; +} +#undef CSS_BORDER_RIGHT_COLOR_MASK +#undef CSS_BORDER_RIGHT_COLOR_SHIFT +#undef CSS_BORDER_RIGHT_COLOR_INDEX + +#define CSS_BORDER_BOTTOM_COLOR_INDEX 8 +#define CSS_BORDER_BOTTOM_COLOR_SHIFT 0 +#define CSS_BORDER_BOTTOM_COLOR_MASK 0x3 +uint8_t css_computed_border_bottom_color( + const css_computed_style *style, + css_color *color) +{ + uint8_t bits = style->bits[CSS_BORDER_BOTTOM_COLOR_INDEX]; + bits &= CSS_BORDER_BOTTOM_COLOR_MASK; + bits >>= CSS_BORDER_BOTTOM_COLOR_SHIFT; + + /* 2bits: type */ + *color = style->border_color[2]; + + return bits; +} +#undef CSS_BORDER_BOTTOM_COLOR_MASK +#undef CSS_BORDER_BOTTOM_COLOR_SHIFT +#undef CSS_BORDER_BOTTOM_COLOR_INDEX + +#define CSS_BORDER_LEFT_COLOR_INDEX 9 +#define CSS_BORDER_LEFT_COLOR_SHIFT 0 +#define CSS_BORDER_LEFT_COLOR_MASK 0x3 +uint8_t css_computed_border_left_color( + const css_computed_style *style, + css_color *color) +{ + uint8_t bits = style->bits[CSS_BORDER_LEFT_COLOR_INDEX]; + bits &= CSS_BORDER_LEFT_COLOR_MASK; + bits >>= CSS_BORDER_LEFT_COLOR_SHIFT; + + /* 2bits: type */ + *color = style->border_color[3]; + + return bits; +} +#undef CSS_BORDER_LEFT_COLOR_MASK +#undef CSS_BORDER_LEFT_COLOR_SHIFT +#undef CSS_BORDER_LEFT_COLOR_INDEX + +#define CSS_HEIGHT_INDEX 10 +#define CSS_HEIGHT_SHIFT 2 +#define CSS_HEIGHT_MASK 0xfc +uint8_t css_computed_height( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_HEIGHT_INDEX]; + bits &= CSS_HEIGHT_MASK; + bits >>= CSS_HEIGHT_SHIFT; + + /* 6bits: uuuutt : units | type */ + if ((bits & 0x3) == CSS_HEIGHT_SET) { + *length = style->height; + *unit = (css_unit) (bits >> 2); + } + + return (bits & 0x3); +} +#undef CSS_HEIGHT_MASK +#undef CSS_HEIGHT_SHIFT +#undef CSS_HEIGHT_INDEX + +#define CSS_LINE_HEIGHT_INDEX 11 +#define CSS_LINE_HEIGHT_SHIFT 2 +#define CSS_LINE_HEIGHT_MASK 0xfc +uint8_t css_computed_line_height( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_LINE_HEIGHT_INDEX]; + bits &= CSS_LINE_HEIGHT_MASK; + bits >>= CSS_LINE_HEIGHT_SHIFT; + + /* 6bits: uuuutt : units | type */ + if ((bits & 0x3) == CSS_LINE_HEIGHT_NUMBER || + (bits & 0x3) == CSS_LINE_HEIGHT_DIMENSION) { + *length = style->line_height; + } + + if ((bits & 0x3) == CSS_LINE_HEIGHT_DIMENSION) { + *unit = (css_unit) (bits >> 2); + } + + return (bits & 0x3); +} +#undef CSS_LINE_HEIGHT_MASK +#undef CSS_LINE_HEIGHT_SHIFT +#undef CSS_LINE_HEIGHT_INDEX + +#define CSS_BACKGROUND_COLOR_INDEX 10 +#define CSS_BACKGROUND_COLOR_SHIFT 0 +#define CSS_BACKGROUND_COLOR_MASK 0x3 +uint8_t css_computed_background_color( + const css_computed_style *style, + css_color *color) +{ + uint8_t bits = style->bits[CSS_BACKGROUND_COLOR_INDEX]; + bits &= CSS_BACKGROUND_COLOR_MASK; + bits >>= CSS_BACKGROUND_COLOR_SHIFT; + + /* 2bits: type */ + *color = style->background_color; + + return bits; +} +#undef CSS_BACKGROUND_COLOR_MASK +#undef CSS_BACKGROUND_COLOR_SHIFT +#undef CSS_BACKGROUND_COLOR_INDEX + +#define CSS_Z_INDEX_INDEX 11 +#define CSS_Z_INDEX_SHIFT 0 +#define CSS_Z_INDEX_MASK 0x3 +uint8_t css_computed_z_index( + const css_computed_style *style, + int32_t *z_index) +{ + uint8_t bits = style->bits[CSS_Z_INDEX_INDEX]; + bits &= CSS_Z_INDEX_MASK; + bits >>= CSS_Z_INDEX_SHIFT; + + /* 2bits: type */ + *z_index = style->z_index; + + return bits; +} +#undef CSS_Z_INDEX_MASK +#undef CSS_Z_INDEX_SHIFT +#undef CSS_Z_INDEX_INDEX + +#define CSS_MARGIN_TOP_INDEX 12 +#define CSS_MARGIN_TOP_SHIFT 2 +#define CSS_MARGIN_TOP_MASK 0xfc +uint8_t css_computed_margin_top( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_MARGIN_TOP_INDEX]; + bits &= CSS_MARGIN_TOP_MASK; + bits >>= CSS_MARGIN_TOP_SHIFT; + + /* 6bits: uuuutt : units | type */ + if ((bits & 0x3) == CSS_MARGIN_SET) { + *length = style->margin[0]; + *unit = (css_unit) (bits >> 2); + } + + return (bits & 0x3); +} +#undef CSS_MARGIN_TOP_MASK +#undef CSS_MARGIN_TOP_SHIFT +#undef CSS_MARGIN_TOP_INDEX + +#define CSS_MARGIN_RIGHT_INDEX 13 +#define CSS_MARGIN_RIGHT_SHIFT 2 +#define CSS_MARGIN_RIGHT_MASK 0xfc +uint8_t css_computed_margin_right( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_MARGIN_RIGHT_INDEX]; + bits &= CSS_MARGIN_RIGHT_MASK; + bits >>= CSS_MARGIN_RIGHT_SHIFT; + + /* 6bits: uuuutt : units | type */ + if ((bits & 0x3) == CSS_MARGIN_SET) { + *length = style->margin[1]; + *unit = (css_unit) (bits >> 2); + } + + return (bits & 0x3); +} +#undef CSS_MARGIN_RIGHT_MASK +#undef CSS_MARGIN_RIGHT_SHIFT +#undef CSS_MARGIN_RIGHT_INDEX + +#define CSS_MARGIN_BOTTOM_INDEX 14 +#define CSS_MARGIN_BOTTOM_SHIFT 2 +#define CSS_MARGIN_BOTTOM_MASK 0xfc +uint8_t css_computed_margin_bottom( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_MARGIN_BOTTOM_INDEX]; + bits &= CSS_MARGIN_BOTTOM_MASK; + bits >>= CSS_MARGIN_BOTTOM_SHIFT; + + /* 6bits: uuuutt : units | type */ + if ((bits & 0x3) == CSS_MARGIN_SET) { + *length = style->margin[2]; + *unit = (css_unit) (bits >> 2); + } + + return (bits & 0x3); +} +#undef CSS_MARGIN_BOTTOM_MASK +#undef CSS_MARGIN_BOTTOM_SHIFT +#undef CSS_MARGIN_BOTTOM_INDEX + +#define CSS_MARGIN_LEFT_INDEX 15 +#define CSS_MARGIN_LEFT_SHIFT 2 +#define CSS_MARGIN_LEFT_MASK 0xfc +uint8_t css_computed_margin_left( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_MARGIN_LEFT_INDEX]; + bits &= CSS_MARGIN_LEFT_MASK; + bits >>= CSS_MARGIN_LEFT_SHIFT; + + /* 6bits: uuuutt : units | type */ + if ((bits & 0x3) == CSS_MARGIN_SET) { + *length = style->margin[3]; + *unit = (css_unit) (bits >> 2); + } + + return (bits & 0x3); +} +#undef CSS_MARGIN_LEFT_MASK +#undef CSS_MARGIN_LEFT_SHIFT +#undef CSS_MARGIN_LEFT_INDEX + +#define CSS_BACKGROUND_ATTACHMENT_INDEX 12 +#define CSS_BACKGROUND_ATTACHMENT_SHIFT 0 +#define CSS_BACKGROUND_ATTACHMENT_MASK 0x3 +uint8_t css_computed_background_attachment( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_BACKGROUND_ATTACHMENT_INDEX]; + bits &= CSS_BACKGROUND_ATTACHMENT_MASK; + bits >>= CSS_BACKGROUND_ATTACHMENT_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_BACKGROUND_ATTACHMENT_MASK +#undef CSS_BACKGROUND_ATTACHMENT_SHIFT +#undef CSS_BACKGROUND_ATTACHMENT_INDEX + +#define CSS_BORDER_COLLAPSE_INDEX 13 +#define CSS_BORDER_COLLAPSE_SHIFT 0 +#define CSS_BORDER_COLLAPSE_MASK 0x3 +uint8_t css_computed_border_collapse( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_BORDER_COLLAPSE_INDEX]; + bits &= CSS_BORDER_COLLAPSE_MASK; + bits >>= CSS_BORDER_COLLAPSE_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_BORDER_COLLAPSE_MASK +#undef CSS_BORDER_COLLAPSE_SHIFT +#undef CSS_BORDER_COLLAPSE_INDEX + +#define CSS_CAPTION_SIDE_INDEX 14 +#define CSS_CAPTION_SIDE_SHIFT 0 +#define CSS_CAPTION_SIDE_MASK 0x3 +uint8_t css_computed_caption_side( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_CAPTION_SIDE_INDEX]; + bits &= CSS_CAPTION_SIDE_MASK; + bits >>= CSS_CAPTION_SIDE_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_CAPTION_SIDE_MASK +#undef CSS_CAPTION_SIDE_SHIFT +#undef CSS_CAPTION_SIDE_INDEX + +#define CSS_DIRECTION_INDEX 15 +#define CSS_DIRECTION_SHIFT 0 +#define CSS_DIRECTION_MASK 0x3 +uint8_t css_computed_direction( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_DIRECTION_INDEX]; + bits &= CSS_DIRECTION_MASK; + bits >>= CSS_DIRECTION_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_DIRECTION_MASK +#undef CSS_DIRECTION_SHIFT +#undef CSS_DIRECTION_INDEX + +#define CSS_MAX_HEIGHT_INDEX 16 +#define CSS_MAX_HEIGHT_SHIFT 2 +#define CSS_MAX_HEIGHT_MASK 0xfc +uint8_t css_computed_max_height( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_MAX_HEIGHT_INDEX]; + bits &= CSS_MAX_HEIGHT_MASK; + bits >>= CSS_MAX_HEIGHT_SHIFT; + + /* 6bits: uuuutt : units | type */ + if ((bits & 0x3) == CSS_MAX_HEIGHT_SET) { + *length = style->max_height; + *unit = (css_unit) (bits >> 2); + } + + return (bits & 0x3); +} +#undef CSS_MAX_HEIGHT_MASK +#undef CSS_MAX_HEIGHT_SHIFT +#undef CSS_MAX_HEIGHT_INDEX + +#define CSS_MAX_WIDTH_INDEX 17 +#define CSS_MAX_WIDTH_SHIFT 2 +#define CSS_MAX_WIDTH_MASK 0xfc +uint8_t css_computed_max_width( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_MAX_WIDTH_INDEX]; + bits &= CSS_MAX_WIDTH_MASK; + bits >>= CSS_MAX_WIDTH_SHIFT; + + /* 6bits: uuuutt : units | type */ + if ((bits & 0x3) == CSS_MAX_WIDTH_SET) { + *length = style->max_width; + *unit = (css_unit) (bits >> 2); + } + + return (bits & 0x3); +} +#undef CSS_MAX_WIDTH_MASK +#undef CSS_MAX_WIDTH_SHIFT +#undef CSS_MAX_WIDTH_INDEX + +#define CSS_WIDTH_INDEX 18 +#define CSS_WIDTH_SHIFT 2 +#define CSS_WIDTH_MASK 0xfc +uint8_t css_computed_width( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_WIDTH_INDEX]; + bits &= CSS_WIDTH_MASK; + bits >>= CSS_WIDTH_SHIFT; + + /* 6bits: uuuutt : units | type */ + if ((bits & 0x3) == CSS_WIDTH_SET) { + *length = style->width; + *unit = (css_unit) (bits >> 2); + } + + return (bits & 0x3); +} +#undef CSS_WIDTH_MASK +#undef CSS_WIDTH_SHIFT +#undef CSS_WIDTH_INDEX + +#define CSS_EMPTY_CELLS_INDEX 16 +#define CSS_EMPTY_CELLS_SHIFT 0 +#define CSS_EMPTY_CELLS_MASK 0x3 +uint8_t css_computed_empty_cells( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_EMPTY_CELLS_INDEX]; + bits &= CSS_EMPTY_CELLS_MASK; + bits >>= CSS_EMPTY_CELLS_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_EMPTY_CELLS_MASK +#undef CSS_EMPTY_CELLS_SHIFT +#undef CSS_EMPTY_CELLS_INDEX + +#define CSS_FLOAT_INDEX 17 +#define CSS_FLOAT_SHIFT 0 +#define CSS_FLOAT_MASK 0x3 +uint8_t css_computed_float( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_FLOAT_INDEX]; + bits &= CSS_FLOAT_MASK; + bits >>= CSS_FLOAT_SHIFT; + + /* Fix up as per $9.7:2 */ + if (css_computed_position(style) == CSS_POSITION_ABSOLUTE || + css_computed_position(style) == CSS_POSITION_FIXED) + return CSS_FLOAT_NONE; + + /* 2bits: type */ + return bits; +} +#undef CSS_FLOAT_MASK +#undef CSS_FLOAT_SHIFT +#undef CSS_FLOAT_INDEX + +#define CSS_FONT_STYLE_INDEX 18 +#define CSS_FONT_STYLE_SHIFT 0 +#define CSS_FONT_STYLE_MASK 0x3 +uint8_t css_computed_font_style( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_FONT_STYLE_INDEX]; + bits &= CSS_FONT_STYLE_MASK; + bits >>= CSS_FONT_STYLE_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_FONT_STYLE_MASK +#undef CSS_FONT_STYLE_SHIFT +#undef CSS_FONT_STYLE_INDEX + +#define CSS_MIN_HEIGHT_INDEX 19 +#define CSS_MIN_HEIGHT_SHIFT 3 +#define CSS_MIN_HEIGHT_MASK 0xf8 +uint8_t css_computed_min_height( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_MIN_HEIGHT_INDEX]; + bits &= CSS_MIN_HEIGHT_MASK; + bits >>= CSS_MIN_HEIGHT_SHIFT; + + /* 5bits: uuuut : units | type */ + if ((bits & 0x1) == CSS_MIN_HEIGHT_SET) { + *length = style->min_height; + *unit = (css_unit) (bits >> 1); + } + + return (bits & 0x1); +} +#undef CSS_MIN_HEIGHT_MASK +#undef CSS_MIN_HEIGHT_SHIFT +#undef CSS_MIN_HEIGHT_INDEX + +#define CSS_MIN_WIDTH_INDEX 20 +#define CSS_MIN_WIDTH_SHIFT 3 +#define CSS_MIN_WIDTH_MASK 0xf8 +uint8_t css_computed_min_width( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_MIN_WIDTH_INDEX]; + bits &= CSS_MIN_WIDTH_MASK; + bits >>= CSS_MIN_WIDTH_SHIFT; + + /* 5bits: uuuut : units | type */ + if ((bits & 0x1) == CSS_MIN_WIDTH_SET) { + *length = style->min_width; + *unit = (css_unit) (bits >> 1); + } + + return (bits & 0x1); +} +#undef CSS_MIN_WIDTH_MASK +#undef CSS_MIN_WIDTH_SHIFT +#undef CSS_MIN_WIDTH_INDEX + +#define CSS_BACKGROUND_REPEAT_INDEX 19 +#define CSS_BACKGROUND_REPEAT_SHIFT 0 +#define CSS_BACKGROUND_REPEAT_MASK 0x7 +uint8_t css_computed_background_repeat( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_BACKGROUND_REPEAT_INDEX]; + bits &= CSS_BACKGROUND_REPEAT_MASK; + bits >>= CSS_BACKGROUND_REPEAT_SHIFT; + + /* 3bits: type */ + return bits; +} +#undef CSS_BACKGROUND_REPEAT_MASK +#undef CSS_BACKGROUND_REPEAT_SHIFT +#undef CSS_BACKGROUND_REPEAT_INDEX + +#define CSS_CLEAR_INDEX 20 +#define CSS_CLEAR_SHIFT 0 +#define CSS_CLEAR_MASK 0x7 +uint8_t css_computed_clear( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_CLEAR_INDEX]; + bits &= CSS_CLEAR_MASK; + bits >>= CSS_CLEAR_SHIFT; + + /* 3bits: type */ + return bits; +} +#undef CSS_CLEAR_MASK +#undef CSS_CLEAR_SHIFT +#undef CSS_CLEAR_INDEX + +#define CSS_PADDING_TOP_INDEX 21 +#define CSS_PADDING_TOP_SHIFT 3 +#define CSS_PADDING_TOP_MASK 0xf8 +uint8_t css_computed_padding_top( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_PADDING_TOP_INDEX]; + bits &= CSS_PADDING_TOP_MASK; + bits >>= CSS_PADDING_TOP_SHIFT; + + /* 5bits: uuuut : units | type */ + if ((bits & 0x1) == CSS_PADDING_SET) { + *length = style->padding[0]; + *unit = (css_unit) (bits >> 1); + } + + return (bits & 0x1); +} +#undef CSS_PADDING_TOP_MASK +#undef CSS_PADDING_TOP_SHIFT +#undef CSS_PADDING_TOP_INDEX + +#define CSS_PADDING_RIGHT_INDEX 22 +#define CSS_PADDING_RIGHT_SHIFT 3 +#define CSS_PADDING_RIGHT_MASK 0xf8 +uint8_t css_computed_padding_right( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_PADDING_RIGHT_INDEX]; + bits &= CSS_PADDING_RIGHT_MASK; + bits >>= CSS_PADDING_RIGHT_SHIFT; + + /* 5bits: uuuut : units | type */ + if ((bits & 0x1) == CSS_PADDING_SET) { + *length = style->padding[1]; + *unit = (css_unit) (bits >> 1); + } + + return (bits & 0x1); +} +#undef CSS_PADDING_RIGHT_MASK +#undef CSS_PADDING_RIGHT_SHIFT +#undef CSS_PADDING_RIGHT_INDEX + +#define CSS_PADDING_BOTTOM_INDEX 23 +#define CSS_PADDING_BOTTOM_SHIFT 3 +#define CSS_PADDING_BOTTOM_MASK 0xf8 +uint8_t css_computed_padding_bottom( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_PADDING_BOTTOM_INDEX]; + bits &= CSS_PADDING_BOTTOM_MASK; + bits >>= CSS_PADDING_BOTTOM_SHIFT; + + /* 5bits: uuuut : units | type */ + if ((bits & 0x1) == CSS_PADDING_SET) { + *length = style->padding[2]; + *unit = (css_unit) (bits >> 1); + } + + return (bits & 0x1); +} +#undef CSS_PADDING_BOTTOM_MASK +#undef CSS_PADDING_BOTTOM_SHIFT +#undef CSS_PADDING_BOTTOM_INDEX + +#define CSS_PADDING_LEFT_INDEX 24 +#define CSS_PADDING_LEFT_SHIFT 3 +#define CSS_PADDING_LEFT_MASK 0xf8 +uint8_t css_computed_padding_left( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_PADDING_LEFT_INDEX]; + bits &= CSS_PADDING_LEFT_MASK; + bits >>= CSS_PADDING_LEFT_SHIFT; + + /* 5bits: uuuut : units | type */ + if ((bits & 0x1) == CSS_PADDING_SET) { + *length = style->padding[3]; + *unit = (css_unit) (bits >> 1); + } + + return (bits & 0x1); +} +#undef CSS_PADDING_LEFT_MASK +#undef CSS_PADDING_LEFT_SHIFT +#undef CSS_PADDING_LEFT_INDEX + +#define CSS_OVERFLOW_INDEX 21 +#define CSS_OVERFLOW_SHIFT 0 +#define CSS_OVERFLOW_MASK 0x7 +uint8_t css_computed_overflow( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_OVERFLOW_INDEX]; + bits &= CSS_OVERFLOW_MASK; + bits >>= CSS_OVERFLOW_SHIFT; + + /* 3bits: type */ + return bits; +} +#undef CSS_OVERFLOW_MASK +#undef CSS_OVERFLOW_SHIFT +#undef CSS_OVERFLOW_INDEX + +#define CSS_POSITION_INDEX 22 +#define CSS_POSITION_SHIFT 0 +#define CSS_POSITION_MASK 0x7 +uint8_t css_computed_position( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_POSITION_INDEX]; + bits &= CSS_POSITION_MASK; + bits >>= CSS_POSITION_SHIFT; + + /* 3bits: type */ + return bits; +} +#undef CSS_POSITION_MASK +#undef CSS_POSITION_SHIFT +#undef CSS_POSITION_INDEX + +#define CSS_OPACITY_INDEX 23 +#define CSS_OPACITY_SHIFT 2 +#define CSS_OPACITY_MASK 0x04 +uint8_t css_computed_opacity( + const css_computed_style *style, + css_fixed *opacity) +{ + uint8_t bits = style->bits[CSS_OPACITY_INDEX]; + bits &= CSS_OPACITY_MASK; + bits >>= CSS_OPACITY_SHIFT; + + /* 1bit: t : type */ + if ((bits & 0x1) == CSS_OPACITY_SET) { + *opacity = style->opacity; + } + + return (bits & 0x1); +} +#undef CSS_OPACITY_MASK +#undef CSS_OPACITY_SHIFT +#undef CSS_OPACITY_INDEX + +#define CSS_TEXT_TRANSFORM_INDEX 24 +#define CSS_TEXT_TRANSFORM_SHIFT 0 +#define CSS_TEXT_TRANSFORM_MASK 0x7 +uint8_t css_computed_text_transform( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_TEXT_TRANSFORM_INDEX]; + bits &= CSS_TEXT_TRANSFORM_MASK; + bits >>= CSS_TEXT_TRANSFORM_SHIFT; + + /* 3bits: type */ + return bits; +} +#undef CSS_TEXT_TRANSFORM_MASK +#undef CSS_TEXT_TRANSFORM_SHIFT +#undef CSS_TEXT_TRANSFORM_INDEX + +#define CSS_TEXT_INDENT_INDEX 25 +#define CSS_TEXT_INDENT_SHIFT 3 +#define CSS_TEXT_INDENT_MASK 0xf8 +uint8_t css_computed_text_indent( + const css_computed_style *style, + css_fixed *length, css_unit *unit) +{ + uint8_t bits = style->bits[CSS_TEXT_INDENT_INDEX]; + bits &= CSS_TEXT_INDENT_MASK; + bits >>= CSS_TEXT_INDENT_SHIFT; + + /* 5bits: uuuut : units | type */ + if ((bits & 0x1) == CSS_TEXT_INDENT_SET) { + *length = style->text_indent; + *unit = (css_unit) (bits >> 1); + } + + return (bits & 0x1); +} +#undef CSS_TEXT_INDENT_MASK +#undef CSS_TEXT_INDENT_SHIFT +#undef CSS_TEXT_INDENT_INDEX + +#define CSS_WHITE_SPACE_INDEX 25 +#define CSS_WHITE_SPACE_SHIFT 0 +#define CSS_WHITE_SPACE_MASK 0x7 +uint8_t css_computed_white_space( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_WHITE_SPACE_INDEX]; + bits &= CSS_WHITE_SPACE_MASK; + bits >>= CSS_WHITE_SPACE_SHIFT; + + /* 3bits: type */ + return bits; +} +#undef CSS_WHITE_SPACE_MASK +#undef CSS_WHITE_SPACE_SHIFT +#undef CSS_WHITE_SPACE_INDEX + +#define CSS_BACKGROUND_POSITION_INDEX 27 +#define CSS_BACKGROUND_POSITION_SHIFT 7 +#define CSS_BACKGROUND_POSITION_MASK 0x80 +#define CSS_BACKGROUND_POSITION_INDEX1 26 +#define CSS_BACKGROUND_POSITION_SHIFT1 0 +#define CSS_BACKGROUND_POSITION_MASK1 0xff +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[CSS_BACKGROUND_POSITION_INDEX]; + bits &= CSS_BACKGROUND_POSITION_MASK; + bits >>= CSS_BACKGROUND_POSITION_SHIFT; + + /* 1bit: type */ + if (bits == CSS_BACKGROUND_POSITION_SET) { + uint8_t bits1 = style->bits[CSS_BACKGROUND_POSITION_INDEX1]; + bits1 &= CSS_BACKGROUND_POSITION_MASK1; + bits1 >>= CSS_BACKGROUND_POSITION_SHIFT1; + + /* 8bits: hhhhvvvv : hunit | vunit */ + *hlength = style->background_position[0]; + *hunit = (css_unit) (bits1 >> 4); + + *vlength = style->background_position[1]; + *vunit = (css_unit) (bits1 & 0xf); + } + + return bits; +} +#undef CSS_BACKGROUND_POSITION_MASK1 +#undef CSS_BACKGROUND_POSITION_SHIFT1 +#undef CSS_BACKGROUND_POSITION_INDEX1 +#undef CSS_BACKGROUND_POSITION_MASK +#undef CSS_BACKGROUND_POSITION_SHIFT +#undef CSS_BACKGROUND_POSITION_INDEX + +#define CSS_DISPLAY_INDEX 27 +#define CSS_DISPLAY_SHIFT 2 +#define CSS_DISPLAY_MASK 0x7c +uint8_t css_computed_display( + const css_computed_style *style, bool root) +{ + uint8_t position; + uint8_t bits = style->bits[CSS_DISPLAY_INDEX]; + bits &= CSS_DISPLAY_MASK; + bits >>= CSS_DISPLAY_SHIFT; + + /* Return computed display as per $9.7 */ + position = css_computed_position(style); + + /* 5bits: type */ + if (bits == CSS_DISPLAY_NONE) + return bits; /* 1. */ + + if ((position == CSS_POSITION_ABSOLUTE || + position == CSS_POSITION_FIXED) /* 2. */ || + css_computed_float(style) != CSS_FLOAT_NONE /* 3. */ || + root /* 4. */) { + if (bits == CSS_DISPLAY_INLINE_TABLE) { + return CSS_DISPLAY_TABLE; + } else if (bits == CSS_DISPLAY_INLINE || + bits == CSS_DISPLAY_RUN_IN || + bits == CSS_DISPLAY_TABLE_ROW_GROUP || + bits == CSS_DISPLAY_TABLE_COLUMN || + bits == CSS_DISPLAY_TABLE_COLUMN_GROUP || + bits == CSS_DISPLAY_TABLE_HEADER_GROUP || + bits == CSS_DISPLAY_TABLE_FOOTER_GROUP || + bits == CSS_DISPLAY_TABLE_ROW || + bits == CSS_DISPLAY_TABLE_CELL || + bits == CSS_DISPLAY_TABLE_CAPTION || + bits == CSS_DISPLAY_INLINE_BLOCK) { + return CSS_DISPLAY_BLOCK; + } + } + + /* 5. */ + return bits; +} + +uint8_t css_computed_display_static( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_DISPLAY_INDEX]; + bits &= CSS_DISPLAY_MASK; + bits >>= CSS_DISPLAY_SHIFT; + + /* 5bits: type */ + return bits; +} + +#undef CSS_DISPLAY_MASK +#undef CSS_DISPLAY_SHIFT +#undef CSS_DISPLAY_INDEX + +#define CSS_FONT_VARIANT_INDEX 27 +#define CSS_FONT_VARIANT_SHIFT 0 +#define CSS_FONT_VARIANT_MASK 0x3 +uint8_t css_computed_font_variant( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_FONT_VARIANT_INDEX]; + bits &= CSS_FONT_VARIANT_MASK; + bits >>= CSS_FONT_VARIANT_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_FONT_VARIANT_MASK +#undef CSS_FONT_VARIANT_SHIFT +#undef CSS_FONT_VARIANT_INDEX + +#define CSS_TEXT_DECORATION_INDEX 28 +#define CSS_TEXT_DECORATION_SHIFT 3 +#define CSS_TEXT_DECORATION_MASK 0xf8 +uint8_t css_computed_text_decoration( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_TEXT_DECORATION_INDEX]; + bits &= CSS_TEXT_DECORATION_MASK; + bits >>= CSS_TEXT_DECORATION_SHIFT; + + /* 5bits: type */ + return bits; +} +#undef CSS_TEXT_DECORATION_MASK +#undef CSS_TEXT_DECORATION_SHIFT +#undef CSS_TEXT_DECORATION_INDEX + +#define CSS_FONT_FAMILY_INDEX 28 +#define CSS_FONT_FAMILY_SHIFT 0 +#define CSS_FONT_FAMILY_MASK 0x7 +uint8_t css_computed_font_family( + const css_computed_style *style, + lwc_string ***names) +{ + uint8_t bits = style->bits[CSS_FONT_FAMILY_INDEX]; + bits &= CSS_FONT_FAMILY_MASK; + bits >>= CSS_FONT_FAMILY_SHIFT; + + /* 3bits: type */ + *names = style->font_family; + + return bits; +} +#undef CSS_FONT_FAMILY_MASK +#undef CSS_FONT_FAMILY_SHIFT +#undef CSS_FONT_FAMILY_INDEX + +#define CSS_BORDER_TOP_STYLE_INDEX 29 +#define CSS_BORDER_TOP_STYLE_SHIFT 4 +#define CSS_BORDER_TOP_STYLE_MASK 0xf0 +uint8_t css_computed_border_top_style( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_BORDER_TOP_STYLE_INDEX]; + bits &= CSS_BORDER_TOP_STYLE_MASK; + bits >>= CSS_BORDER_TOP_STYLE_SHIFT; + + /* 4bits: type */ + return bits; +} +#undef CSS_BORDER_TOP_STYLE_MASK +#undef CSS_BORDER_TOP_STYLE_SHIFT +#undef CSS_BORDER_TOP_STYLE_INDEX + +#define CSS_BORDER_RIGHT_STYLE_INDEX 29 +#define CSS_BORDER_RIGHT_STYLE_SHIFT 0 +#define CSS_BORDER_RIGHT_STYLE_MASK 0xf +uint8_t css_computed_border_right_style( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_BORDER_RIGHT_STYLE_INDEX]; + bits &= CSS_BORDER_RIGHT_STYLE_MASK; + bits >>= CSS_BORDER_RIGHT_STYLE_SHIFT; + + /* 4bits: type */ + return bits; +} +#undef CSS_BORDER_RIGHT_STYLE_MASK +#undef CSS_BORDER_RIGHT_STYLE_SHIFT +#undef CSS_BORDER_RIGHT_STYLE_INDEX + +#define CSS_BORDER_BOTTOM_STYLE_INDEX 30 +#define CSS_BORDER_BOTTOM_STYLE_SHIFT 4 +#define CSS_BORDER_BOTTOM_STYLE_MASK 0xf0 +uint8_t css_computed_border_bottom_style( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_BORDER_BOTTOM_STYLE_INDEX]; + bits &= CSS_BORDER_BOTTOM_STYLE_MASK; + bits >>= CSS_BORDER_BOTTOM_STYLE_SHIFT; + + /* 4bits: type */ + return bits; +} +#undef CSS_BORDER_BOTTOM_STYLE_MASK +#undef CSS_BORDER_BOTTOM_STYLE_SHIFT +#undef CSS_BORDER_BOTTOM_STYLE_INDEX + +#define CSS_BORDER_LEFT_STYLE_INDEX 30 +#define CSS_BORDER_LEFT_STYLE_SHIFT 0 +#define CSS_BORDER_LEFT_STYLE_MASK 0xf +uint8_t css_computed_border_left_style( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_BORDER_LEFT_STYLE_INDEX]; + bits &= CSS_BORDER_LEFT_STYLE_MASK; + bits >>= CSS_BORDER_LEFT_STYLE_SHIFT; + + /* 4bits: type */ + return bits; +} +#undef CSS_BORDER_LEFT_STYLE_MASK +#undef CSS_BORDER_LEFT_STYLE_SHIFT +#undef CSS_BORDER_LEFT_STYLE_INDEX + +#define CSS_FONT_WEIGHT_INDEX 31 +#define CSS_FONT_WEIGHT_SHIFT 4 +#define CSS_FONT_WEIGHT_MASK 0xf0 +uint8_t css_computed_font_weight( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_FONT_WEIGHT_INDEX]; + bits &= CSS_FONT_WEIGHT_MASK; + bits >>= CSS_FONT_WEIGHT_SHIFT; + + /* 4bits: type */ + return bits; +} +#undef CSS_FONT_WEIGHT_MASK +#undef CSS_FONT_WEIGHT_SHIFT +#undef CSS_FONT_WEIGHT_INDEX + +#define CSS_LIST_STYLE_TYPE_INDEX 31 +#define CSS_LIST_STYLE_TYPE_SHIFT 0 +#define CSS_LIST_STYLE_TYPE_MASK 0xf +uint8_t css_computed_list_style_type( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_LIST_STYLE_TYPE_INDEX]; + bits &= CSS_LIST_STYLE_TYPE_MASK; + bits >>= CSS_LIST_STYLE_TYPE_SHIFT; + + /* 4bits: type */ + return bits; +} +#undef CSS_LIST_STYLE_TYPE_MASK +#undef CSS_LIST_STYLE_TYPE_SHIFT +#undef CSS_LIST_STYLE_TYPE_INDEX + +#define CSS_OUTLINE_STYLE_INDEX 32 +#define CSS_OUTLINE_STYLE_SHIFT 4 +#define CSS_OUTLINE_STYLE_MASK 0xf0 +uint8_t css_computed_outline_style( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_OUTLINE_STYLE_INDEX]; + bits &= CSS_OUTLINE_STYLE_MASK; + bits >>= CSS_OUTLINE_STYLE_SHIFT; + + /* 4bits: type */ + return bits; +} +#undef CSS_OUTLINE_STYLE_MASK +#undef CSS_OUTLINE_STYLE_SHIFT +#undef CSS_OUTLINE_STYLE_INDEX + +#define CSS_TABLE_LAYOUT_INDEX 32 +#define CSS_TABLE_LAYOUT_SHIFT 2 +#define CSS_TABLE_LAYOUT_MASK 0xc +uint8_t css_computed_table_layout( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_TABLE_LAYOUT_INDEX]; + bits &= CSS_TABLE_LAYOUT_MASK; + bits >>= CSS_TABLE_LAYOUT_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_TABLE_LAYOUT_MASK +#undef CSS_TABLE_LAYOUT_SHIFT +#undef CSS_TABLE_LAYOUT_INDEX + +#define CSS_UNICODE_BIDI_INDEX 32 +#define CSS_UNICODE_BIDI_SHIFT 0 +#define CSS_UNICODE_BIDI_MASK 0x3 +uint8_t css_computed_unicode_bidi( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_UNICODE_BIDI_INDEX]; + bits &= CSS_UNICODE_BIDI_MASK; + bits >>= CSS_UNICODE_BIDI_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_UNICODE_BIDI_MASK +#undef CSS_UNICODE_BIDI_SHIFT +#undef CSS_UNICODE_BIDI_INDEX + +#define CSS_VISIBILITY_INDEX 33 +#define CSS_VISIBILITY_SHIFT 6 +#define CSS_VISIBILITY_MASK 0xc0 +uint8_t css_computed_visibility( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_VISIBILITY_INDEX]; + bits &= CSS_VISIBILITY_MASK; + bits >>= CSS_VISIBILITY_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_VISIBILITY_MASK +#undef CSS_VISIBILITY_SHIFT +#undef CSS_VISIBILITY_INDEX + +#define CSS_LIST_STYLE_POSITION_INDEX 33 +#define CSS_LIST_STYLE_POSITION_SHIFT 4 +#define CSS_LIST_STYLE_POSITION_MASK 0x30 +uint8_t css_computed_list_style_position( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_LIST_STYLE_POSITION_INDEX]; + bits &= CSS_LIST_STYLE_POSITION_MASK; + bits >>= CSS_LIST_STYLE_POSITION_SHIFT; + + /* 2bits: type */ + return bits; +} +#undef CSS_LIST_STYLE_POSITION_MASK +#undef CSS_LIST_STYLE_POSITION_SHIFT +#undef CSS_LIST_STYLE_POSITION_INDEX + +#define CSS_TEXT_ALIGN_INDEX 33 +#define CSS_TEXT_ALIGN_SHIFT 0 +#define CSS_TEXT_ALIGN_MASK 0xf +uint8_t css_computed_text_align( + const css_computed_style *style) +{ + uint8_t bits = style->bits[CSS_TEXT_ALIGN_INDEX]; + bits &= CSS_TEXT_ALIGN_MASK; + bits >>= CSS_TEXT_ALIGN_SHIFT; + + /* 4bits: type */ + return bits; +} +#undef CSS_TEXT_ALIGN_MASK +#undef CSS_TEXT_ALIGN_SHIFT +#undef CSS_TEXT_ALIGN_INDEX + + /****************************************************************************** * Library internals * ******************************************************************************/ -- cgit v1.2.3