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It partially includes changes made in following commits: document/html: struct text_attrib_style -> struct text_style commit e1339412068f97be1aa5f91871ba7ebeedbdb5f document: struct format_attr -> struct text_style_format commit 070d335796c3e71c5feff8813e681ef4534ee016 document: Unify text style -> screen attribute handling commit b66d2bec674f59016ca0708c20249421914b1d2b document: Move text_style-related stuff to dedicated format.* commit db9431465fd77658cfe804947ab336158c1974bd
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
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#ifndef EL__DOCUMENT_CSS_PROPERTY_H
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#define EL__DOCUMENT_CSS_PROPERTY_H
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#include "document/format.h"
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#include "util/align.h"
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#include "util/color.h"
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#include "util/lists.h"
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/** The struct css_property describes one CSS declaration in a rule, therefore
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* being basically a parsed instance of struct css_property_info. One list of
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* these contains all the declarations contained in one rule. */
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struct css_property {
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LIST_HEAD(struct css_property);
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/** Declared property. The enum item name is derived from the
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* property name, just uppercase it and tr/-/_/. */
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enum css_property_type {
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CSS_PT_NONE,
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CSS_PT_BACKGROUND,
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CSS_PT_BACKGROUND_COLOR,
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CSS_PT_COLOR,
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CSS_PT_DISPLAY,
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CSS_PT_FONT_STYLE,
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CSS_PT_FONT_WEIGHT,
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CSS_PT_TEXT_ALIGN,
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CSS_PT_TEXT_DECORATION,
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CSS_PT_WHITE_SPACE,
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CSS_PT_LAST,
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} type;
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/** Type of the property value. Discriminates the #value union. */
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enum css_property_value_type {
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CSS_VT_NONE,
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CSS_VT_COLOR,
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CSS_VT_DISPLAY,
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CSS_VT_FONT_ATTRIBUTE,
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CSS_VT_TEXT_ALIGN,
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CSS_VT_LAST,
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} value_type;
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/** Property value. If it is a pointer, it points always to a
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* memory to be free()d together with this structure. */
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union css_property_value {
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void *none;
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color_T color;
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enum css_display {
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CSS_DISP_INLINE,
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CSS_DISP_BLOCK,
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} display;
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struct {
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enum text_style_format add, rem;
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} font_attribute;
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enum format_align text_align;
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/* TODO:
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* Generic numbers
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* Percentages
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* URL
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* Align (struct format_align) */
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/* TODO: The size units will be fun yet. --pasky */
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} value;
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};
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struct css_property_info;
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struct scanner;
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typedef int (*css_property_value_parser_T)(struct css_property_info *propinfo,
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union css_property_value *value,
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struct scanner *scanner);
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/** The struct css_property_info describes what values the properties can
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* have and what internal type they have. */
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struct css_property_info {
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unsigned char *name;
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enum css_property_type type;
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/** This is the storage type, basically describing what to save to
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* css_property.value. Many properties can share the same valtype.
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* The value is basically output of the value parser. */
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enum css_property_value_type value_type;
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/** This is the property value parser, processing the written
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* form of a property value. Its job is to take the value
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* string (or scanner's token list in the future) and
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* transform it to a union css_property_value according to the
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* property's #value_type. Although some properties can share
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* a parser, it is expected that most properties will either
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* use a custom one or use a generic parser with
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* property-specific backend specified in #parser_data. */
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css_property_value_parser_T parser;
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/** In case you use a generic #parser, it can be useful to still give
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* it some specific data. You can do so through @c parser_data. The
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* content is #parser-specific. */
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void *parser_data;
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};
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/** This table contains info about all the known CSS properties. */
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extern struct css_property_info css_property_info[];
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#endif
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