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-rw-r--r--css/css.h705
1 files changed, 19 insertions, 686 deletions
diff --git a/css/css.h b/css/css.h
index 11aa6a195..e20d2dd9f 100644
--- a/css/css.h
+++ b/css/css.h
@@ -1,6 +1,5 @@
/*
- * Copyright 2004 James Bursa <bursa@users.sourceforge.net>
- * Copyright 2004 John M Bell <jmb202@ecs.soton.ac.uk>
+ * Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
@@ -17,700 +16,34 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-/** \file
- * CSS handling (interface).
- *
- * This module aims to implement CSS 2.1.
- *
- * CSS stylesheets are held in a struct ::content with type CONTENT_CSS.
- * Creation and parsing should be carried out via the content_* functions.
- *
- * Styles are stored in a struct ::css_style, which can be retrieved from a
- * content using css_get_style().
- *
- * css_parse_property_list() constructs a struct ::css_style from a CSS
- * property list, as found in HTML style attributes.
- */
-
-#ifndef _NETSURF_CSS_CSS_H_
-#define _NETSURF_CSS_CSS_H_
-
-#include <stdint.h>
-#include <stdbool.h>
-#include <libxml/HTMLparser.h>
-#include "css/css_enum.h"
-
-
-typedef uint32_t colour; /* 0xbbggrr */
-#define NS_TRANSPARENT 0x1000000
-#define CSS_COLOR_INHERIT 0x2000000
-#define CSS_COLOR_NONE 0x3000000
-#define CSS_COLOR_NOT_SET 0x4000000
-#define TOP 0
-#define RIGHT 1
-#define BOTTOM 2
-#define LEFT 3
-#define CSS_SPECIFICITY_UA 0x0000000
-#define CSS_SPECIFICITY_USER 0x1000000
-#define CSS_SPECIFICITY_AUTHOR 0x2000000
-#define CSS_SPECIFICITY_ID 0x10000
-#define CSS_SPECIFICITY_CLASS 0x100
-#define CSS_SPECIFICITY_ATTR 0x100
-#define CSS_SPECIFICITY_ELEMENT 0x1
-
-
-struct css_working_stylesheet;
-
-
-/** Representation of a CSS 2 length. */
-struct css_length {
- float value;
- css_unit unit;
-};
-
-typedef enum {
- CSS_TEXT_DECORATION_NONE = 0x0,
- CSS_TEXT_DECORATION_INHERIT = 0x1,
- CSS_TEXT_DECORATION_UNDERLINE = 0x2,
- CSS_TEXT_DECORATION_BLINK = 0x4,
- CSS_TEXT_DECORATION_LINE_THROUGH = 0x8,
- CSS_TEXT_DECORATION_OVERLINE = 0x10,
- CSS_TEXT_DECORATION_UNKNOWN = 0x1000,
- CSS_TEXT_DECORATION_NOT_SET = 0x2000
-} css_text_decoration;
-
-typedef enum {
- CSS_BACKGROUND_IMAGE_NONE,
- CSS_BACKGROUND_IMAGE_INHERIT,
- CSS_BACKGROUND_IMAGE_URI,
- CSS_BACKGROUND_IMAGE_NOT_SET
-} css_background_image_type;
-
-/** Part of struct css_style, for convenience. */
-struct css_background_position {
- enum {
- CSS_BACKGROUND_POSITION_LENGTH,
- CSS_BACKGROUND_POSITION_PERCENT,
- CSS_BACKGROUND_POSITION_INHERIT,
- CSS_BACKGROUND_POSITION_NOT_SET
- } pos;
- union {
- float percent;
- struct css_length length;
- } value;
-};
-
-struct css_border_width {
- enum { CSS_BORDER_WIDTH_INHERIT,
- CSS_BORDER_WIDTH_LENGTH,
- CSS_BORDER_WIDTH_NOT_SET } width;
- struct css_length value;
-};
-
-struct css_border {
- colour color;
- struct css_border_width width;
- css_border_style style;
-};
-
-typedef enum {
- CSS_CONTENT_STRING,
- CSS_CONTENT_URI,
- CSS_CONTENT_COUNTER,
- CSS_CONTENT_ATTR,
- CSS_CONTENT_OPEN_QUOTE,
- CSS_CONTENT_CLOSE_QUOTE,
- CSS_CONTENT_NO_OPEN_QUOTE,
- CSS_CONTENT_NO_CLOSE_QUOTE
-} css_content_type_generated;
-
-typedef enum {
- CSS_LIST_STYLE_IMAGE_INHERIT,
- CSS_LIST_STYLE_IMAGE_NONE,
- CSS_LIST_STYLE_IMAGE_URI,
- CSS_LIST_STYLE_IMAGE_NOT_SET
-} css_list_style_image_type;
-
-typedef enum {
- CSS_OUTLINE_COLOR_INHERIT,
- CSS_OUTLINE_COLOR_COLOR,
- CSS_OUTLINE_COLOR_INVERT,
- CSS_OUTLINE_COLOR_NOT_SET
-} css_outline_color_type;
-
-typedef enum {
- CSS_VERTICAL_ALIGN_INHERIT,
- CSS_VERTICAL_ALIGN_BASELINE,
- CSS_VERTICAL_ALIGN_SUB,
- CSS_VERTICAL_ALIGN_SUPER,
- CSS_VERTICAL_ALIGN_TOP,
- CSS_VERTICAL_ALIGN_TEXT_TOP,
- CSS_VERTICAL_ALIGN_MIDDLE,
- CSS_VERTICAL_ALIGN_BOTTOM,
- CSS_VERTICAL_ALIGN_TEXT_BOTTOM,
- CSS_VERTICAL_ALIGN_LENGTH,
- CSS_VERTICAL_ALIGN_PERCENT,
- CSS_VERTICAL_ALIGN_NOT_SET
-} css_vertical_align_type;
-
-typedef enum {
- CSS_FONT_SIZE_INHERIT,
- CSS_FONT_SIZE_ABSOLUTE,
- CSS_FONT_SIZE_LENGTH,
- CSS_FONT_SIZE_PERCENT,
- CSS_FONT_SIZE_NOT_SET
-} css_font_size_type;
-
-struct css_counter_control {
- char *name;
- int value;
- struct css_counter_control *next;
-};
-
-struct css_counter {
- char *name;
- css_list_style_type style;
- char *separator; /** NULL for counter() */
-};
-
-struct css_content {
- css_content_type_generated type;
- union {
- char *string;
- char *uri;
- struct css_counter counter;
- char *attr;
- } data;
- struct css_content *next;
-};
-
-/** Representation of a complete CSS 2 style. */
-struct css_style {
- /* background properties */
- css_background_attachment background_attachment;
- colour background_color;
- struct {
- css_background_image_type type;
- char *uri;
- } background_image;
- struct {
- struct css_background_position horz;
- struct css_background_position vert;
- } background_position;
- css_background_repeat background_repeat;
-
- /* borders */
- struct css_border border[4]; /**< top, right, bottom, left */
- css_border_collapse border_collapse;
- struct {
- enum { CSS_BORDER_SPACING_INHERIT,
- CSS_BORDER_SPACING_LENGTH,
- CSS_BORDER_SPACING_NOT_SET } border_spacing;
- struct css_length horz;
- struct css_length vert;
- } border_spacing;
-
- css_caption_side caption_side;
- css_clear clear;
-
- struct {
- enum { CSS_CLIP_INHERIT,
- CSS_CLIP_AUTO,
- CSS_CLIP_RECT,
- CSS_CLIP_NOT_SET } clip;
- struct {
- enum { CSS_CLIP_RECT_AUTO,
- CSS_CLIP_RECT_LENGTH } rect;
- struct css_length value;
- } rect[4]; /**< top, right, bottom, left */
- } clip;
-
- colour color;
-
- /* generated content */
- struct {
- enum {
- CSS_CONTENT_NORMAL,
- CSS_CONTENT_INHERIT,
- CSS_CONTENT_INTERPRET,
- CSS_CONTENT_NOT_SET } type;
- struct css_content *content;
- } content;
-
- /* counter controls */
- struct {
- enum {
- CSS_COUNTER_RESET_NONE,
- CSS_COUNTER_RESET_INHERIT,
- CSS_COUNTER_RESET_INTERPRET,
- CSS_COUNTER_RESET_NOT_SET } type;
- struct css_counter_control *data;
- } counter_reset;
- struct {
- enum {
- CSS_COUNTER_INCREMENT_NONE,
- CSS_COUNTER_INCREMENT_INHERIT,
- CSS_COUNTER_INCREMENT_INTERPRET,
- CSS_COUNTER_INCREMENT_NOT_SET } type;
- struct css_counter_control *data;
- } counter_increment;
-
- css_cursor cursor;
- css_direction direction;
- css_display display;
- css_empty_cells empty_cells;
- css_float float_;
-
- /* font properties */
- css_font_family font_family;
- struct {
- css_font_size_type size;
- union {
- struct css_length length;
- float absolute;
- float percent;
- } value;
- } font_size;
- css_font_style font_style;
- css_font_variant font_variant;
- css_font_weight font_weight;
-
- struct {
- enum { CSS_HEIGHT_INHERIT,
- CSS_HEIGHT_AUTO,
- CSS_HEIGHT_LENGTH,
- CSS_HEIGHT_PERCENT,
- CSS_HEIGHT_NOT_SET } height;
- union {
- struct css_length length;
- float percent;
- } value;
- } height;
-
- struct {
- enum { CSS_LETTER_SPACING_INHERIT,
- CSS_LETTER_SPACING_NORMAL,
- CSS_LETTER_SPACING_LENGTH,
- CSS_LETTER_SPACING_NOT_SET } letter_spacing;
- struct css_length length;
- } letter_spacing;
-
- struct {
- enum { CSS_LINE_HEIGHT_INHERIT,
- CSS_LINE_HEIGHT_ABSOLUTE,
- CSS_LINE_HEIGHT_LENGTH,
- CSS_LINE_HEIGHT_PERCENT,
- CSS_LINE_HEIGHT_NOT_SET } size;
- union {
- float absolute;
- struct css_length length;
- float percent;
- } value;
- } line_height;
-
- /* list properties */
- struct {
- css_list_style_image_type type;
- char *uri;
- } list_style_image;
- css_list_style_position list_style_position;
- css_list_style_type list_style_type;
-
- /* margins */
- struct {
- enum { CSS_MARGIN_INHERIT,
- CSS_MARGIN_LENGTH,
- CSS_MARGIN_PERCENT,
- CSS_MARGIN_AUTO,
- CSS_MARGIN_NOT_SET } margin;
- union {
- struct css_length length;
- float percent;
- } value;
- } margin[4]; /**< top, right, bottom, left */
-
- /* min/max width/height */
- struct {
- enum { CSS_MAX_HEIGHT_INHERIT,
- CSS_MAX_HEIGHT_NONE,
- CSS_MAX_HEIGHT_LENGTH,
- CSS_MAX_HEIGHT_PERCENT,
- CSS_MAX_HEIGHT_NOT_SET } max_height;
- union {
- struct css_length length;
- float percent;
- } value;
- } max_height;
- struct {
- enum { CSS_MAX_WIDTH_INHERIT,
- CSS_MAX_WIDTH_NONE,
- CSS_MAX_WIDTH_LENGTH,
- CSS_MAX_WIDTH_PERCENT,
- CSS_MAX_WIDTH_NOT_SET } max_width;
- union {
- struct css_length length;
- float percent;
- } value;
- } max_width;
- struct {
- enum { CSS_MIN_HEIGHT_INHERIT,
- CSS_MIN_HEIGHT_LENGTH,
- CSS_MIN_HEIGHT_PERCENT,
- CSS_MIN_HEIGHT_NOT_SET } min_height;
- union {
- struct css_length length;
- float percent;
- } value;
- } min_height;
- struct {
- enum { CSS_MIN_WIDTH_INHERIT,
- CSS_MIN_WIDTH_LENGTH,
- CSS_MIN_WIDTH_PERCENT,
- CSS_MIN_WIDTH_NOT_SET } min_width;
- union {
- struct css_length length;
- float percent;
- } value;
- } min_width;
-
- struct {
- enum { CSS_ORPHANS_INHERIT,
- CSS_ORPHANS_INTEGER,
- CSS_ORPHANS_NOT_SET } orphans;
- int value;
- } orphans;
-
- struct {
- struct {
- css_outline_color_type color;
- colour value;
- } color;
- struct css_border_width width;
- css_border_style style;
- } outline;
-
- css_overflow overflow;
-
- /* padding */
- struct {
- enum { CSS_PADDING_INHERIT,
- CSS_PADDING_LENGTH,
- CSS_PADDING_PERCENT,
- CSS_PADDING_NOT_SET } padding;
- union {
- struct css_length length;
- float percent;
- } value;
- } padding[4]; /**< top, right, bottom, left */
+#ifndef netsurf_css_css_h_
+#define netsurf_css_css_h_
- css_page_break_after page_break_after;
- css_page_break_before page_break_before;
- css_page_break_inside page_break_inside;
+#include <libcss/libcss.h>
- struct {
- enum { CSS_POS_INHERIT,
- CSS_POS_AUTO,
- CSS_POS_PERCENT,
- CSS_POS_LENGTH,
- CSS_POS_NOT_SET } pos;
- union {
- struct css_length length;
- float percent;
- } value;
- } pos[4]; /**< top, right, bottom, left */
-
- css_position position;
-
- /** \todo quotes */
-
- css_table_layout table_layout;
-
- /* text properties */
- css_text_align text_align;
- css_text_decoration text_decoration;
- struct {
- enum { CSS_TEXT_INDENT_INHERIT,
- CSS_TEXT_INDENT_LENGTH,
- CSS_TEXT_INDENT_PERCENT,
- CSS_TEXT_INDENT_NOT_SET } size;
- union {
- struct css_length length;
- float percent;
- } value ;
- } text_indent;
- css_text_transform text_transform;
-
- css_unicode_bidi unicode_bidi;
-
- struct {
- css_vertical_align_type type;
- union {
- struct css_length length;
- float percent;
- } value;
- } vertical_align;
-
- css_visibility visibility;
-
- css_white_space white_space;
-
- struct {
- enum { CSS_WIDOWS_INHERIT,
- CSS_WIDOWS_INTEGER,
- CSS_WIDOWS_NOT_SET } widows;
- int value;
- } widows;
-
- struct {
- enum { CSS_WIDTH_INHERIT,
- CSS_WIDTH_AUTO,
- CSS_WIDTH_LENGTH,
- CSS_WIDTH_PERCENT,
- CSS_WIDTH_NOT_SET } width;
- union {
- struct css_length length;
- float percent;
- } value;
- } width;
-
- struct {
- enum { CSS_WORD_SPACING_INHERIT,
- CSS_WORD_SPACING_NORMAL,
- CSS_WORD_SPACING_LENGTH,
- CSS_WORD_SPACING_NOT_SET } word_spacing;
- struct css_length length;
- } word_spacing;
-
- struct {
- enum { CSS_Z_INDEX_INHERIT,
- CSS_Z_INDEX_AUTO,
- CSS_Z_INDEX_INTEGER,
- CSS_Z_INDEX_NOT_SET } z_index;
- int value;
- } z_index;
-};
-
-/** Author level CSS importance info for properties that may be set in HTML */
-struct css_importance {
- /* background properties */
- bool background_color;
- bool background_image;
-
- /* borders */
- bool border_style[4]; /**< top, right, bottom, left */
- bool border_color[4];
- bool border_width[4];
- bool border_spacing;
-
- bool color;
-
- bool height;
-
- /* margins */
- bool margin[4]; /**< top, right, bottom, left */
-
- /* padding */
- bool padding[4]; /**< top, right, bottom, left */
-
- bool width;
-};
-
-struct css_stylesheet;
-
-typedef enum {
- CSS_ORIGIN_AUTHOR,
- CSS_ORIGIN_USER,
- CSS_ORIGIN_UA
-} css_origin;
-
-/** Data specific to CONTENT_CSS. */
-struct content_css_data {
- struct css_stylesheet *css; /**< Opaque stylesheet data. */
- unsigned int import_count; /**< Number of entries in import_url. */
- struct content **import_content; /**< Imported stylesheet contents. */
- css_origin origin; /**< Origin of stylesheet. */
-};
-
-
-extern const struct css_style css_base_style;
-extern const struct css_style css_empty_style;
-extern const struct css_style css_blank_style;
-extern float css_screen_dpi;
-
-
-#ifdef CSS_INTERNALS
-
-/** Type of a css_selector. */
-typedef enum {
- CSS_SELECTOR_ELEMENT,
- CSS_SELECTOR_ID,
- CSS_SELECTOR_CLASS,
- CSS_SELECTOR_ATTRIB,
- CSS_SELECTOR_ATTRIB_EQ,
- CSS_SELECTOR_ATTRIB_INC,
- CSS_SELECTOR_ATTRIB_DM,
- CSS_SELECTOR_ATTRIB_PRE,
- CSS_SELECTOR_ATTRIB_SUF,
- CSS_SELECTOR_ATTRIB_SUB,
- CSS_SELECTOR_PSEUDO,
-} css_selector_type;
-
-/** Relationship to combiner in a css_selector. */
-typedef enum {
- CSS_COMB_NONE,
- CSS_COMB_ANCESTOR,
- CSS_COMB_PARENT,
- CSS_COMB_PRECEDED,
-} css_combinator;
-
-/** Representation of a CSS selector. */
-struct css_selector {
- css_selector_type type;
- const char *data;
- unsigned int data_length;
- const char *data2;
- unsigned int data2_length;
- struct css_selector *detail;
- struct css_selector *combiner;
- struct css_selector *next;
- css_combinator comb;
- struct css_style *style;
- unsigned long specificity;
-};
-
-/** Type of a css_node. */
-typedef enum {
- CSS_NODE_DECLARATION,
- CSS_NODE_IDENT,
- CSS_NODE_NUMBER,
- CSS_NODE_PERCENTAGE,
- CSS_NODE_DIMENSION,
- CSS_NODE_STRING,
- CSS_NODE_DELIM,
- CSS_NODE_URI,
- CSS_NODE_HASH,
- CSS_NODE_UNICODE_RANGE,
- CSS_NODE_INCLUDES,
- CSS_NODE_FUNCTION,
- CSS_NODE_DASHMATCH,
- CSS_NODE_PREFIX,
- CSS_NODE_SUFFIX,
- CSS_NODE_SUBSTR,
- CSS_NODE_COLON,
- CSS_NODE_COMMA,
- CSS_NODE_DOT,
- CSS_NODE_PLUS,
- CSS_NODE_GT,
- CSS_NODE_PAREN,
- CSS_NODE_BRAC,
-} css_node_type;
-
-/** A node in a CSS parse tree. */
-struct css_node {
- css_node_type type;
- const char *data;
- unsigned int data_length;
- struct css_node *value;
- struct css_node *next;
- css_combinator comb;
- struct css_style *style;
- unsigned long specificity;
- struct content *stylesheet;
-};
-
-
-#define HASH_SIZE (47 + 1)
+struct content;
-/** Representation of a CSS 2 style sheet. */
-struct css_stylesheet {
- struct css_selector *rule[HASH_SIZE];
-};
+/**
+ * CSS content data
+ */
+struct content_css_data
+{
+ lwc_context *dict; /**< Dictionary to intern strings in */
-/** Parameters to and results from the CSS parser. */
-struct css_parser_params {
- bool ruleset_only;
- struct content *stylesheet;
- struct css_node *declaration;
- bool syntax_error;
- bool memory_error;
- bool had_ruleset;
-};
+ css_stylesheet *sheet; /**< Stylesheet object */
-/** Token type for the CSS parser. */
-struct css_parser_token {
- const char *text;
- unsigned int length;
+ uint32_t import_count; /**< Number of sheets imported */
+ struct content **imports; /**< Array of imported sheets */
};
-#endif
-
-
-struct content;
+bool nscss_create(struct content *c, struct content *parent,
+ const char *params[]);
-bool css_convert(struct content *c, int width, int height);
-void css_destroy(struct content *c);
+bool nscss_process_data(struct content *c, char *data, unsigned int size);
-#ifdef CSS_INTERNALS
+bool nscss_convert(struct content *c, int w, int h);
-struct css_node * css_new_node(struct content *stylesheet,
- css_node_type type,
- const char *data, unsigned int data_length);
-void css_free_node(struct css_node *node);
-struct css_selector * css_new_selector(css_selector_type type,
- const char *data, unsigned int data_length);
-void css_free_selector(struct css_selector *node);
-void css_atimport(struct content *c, struct css_node *node);
-void css_add_ruleset(struct content *c,
- struct css_selector *selector,
- struct css_node *declaration);
-void css_add_declarations(struct css_style *style,
- struct css_node *declaration);
-unsigned int css_hash(const char *s, int length);
-
-int css_tokenise(unsigned char **buffer, unsigned char *end,
- unsigned char **token_text);
-
-void css_parser_Trace(FILE *TraceFILE, char *zTracePrompt);
-void *css_parser_Alloc(void *(*mallocProc)(size_t));
-void css_parser_Free(void *p, void (*freeProc)(void*));
-void css_parser_(void *yyp, int yymajor, struct css_parser_token yyminor,
- struct css_parser_params *param);
-const char *css_parser_TokenName(int tokenType);
+void nscss_destroy(struct content *c);
#endif
-void css_set_origin(struct content *c, css_origin origin);
-struct css_working_stylesheet *css_make_working_stylesheet(
- struct content **stylesheet_content,
- unsigned int stylesheet_count);
-void css_get_style(struct css_working_stylesheet *working_stylesheet,
- xmlNode *element, struct css_style *style,
- struct css_importance *author);
-struct css_style *css_duplicate_style(const struct css_style * const style);
-void css_free_style(struct css_style *style);
-void css_deep_free_content(struct css_content *content);
-void css_deep_free_counter_control(struct css_counter_control *control);
-void css_cascade(struct css_style * const style,
- const struct css_style * const apply,
- struct css_importance * const author);
-void css_merge(struct css_style * const style,
- const struct css_style * const apply,
- const unsigned long specificity,
- struct css_importance * const author);
-void css_parse_property_list(struct content *c, struct css_style * style,
- char * str);
-colour named_colour(const char *name);
-colour hex_colour(const char *text, int length);
-
-void css_dump_style(FILE *stream, const struct css_style * const style);
-void css_dump_stylesheet(const struct css_stylesheet * stylesheet);
-
-float css_len2px(const struct css_length *length,
- const struct css_style *style);
-float css_len2pt(const struct css_length *length,
- const struct css_style *style);
-struct css_border *css_eyecatching_border(struct css_border *test1,
- struct css_style *style1, struct css_border *test2,
- struct css_style *style2);
-
-#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 10:45:13 +0000