static void html_eval_tag(XMLState *s, CSSBox *box)
{
const char *value;
CSSProperty *first_prop, **last_prop;
QEColor color;
int width, height, val, type;
int border, padding;
CSSPropertyValue arg;
CSSPropertyValue args[2];
first_prop = NULL;
last_prop = &first_prop;
switch (box->tag) {
case CSS_ID_img:
parse_img:
box->content_type = CSS_CONTENT_TYPE_IMAGE;
box->u.image.content_alt = NULL;
/* set alt content */
value = css_attr_str(box, CSS_ID_alt);
if (!value) {
/* if no alt, display the name of the image */
value = css_attr_str(box, CSS_ID_src);
if (value)
value = basename(value);
}
if (value && value[0] != '\0') {
arg.type = CSS_VALUE_STRING;
arg.u.str = strdup(value);
css_add_prop(&last_prop, CSS_content_alt, &arg);
}
width = css_attr_int(box, CSS_ID_width, 0);
if (width <= 0)
width = DEFAULT_IMG_WIDTH;
height = css_attr_int(box, CSS_ID_height, 0);
if (height <= 0)
height = DEFAULT_IMG_HEIGHT;
css_add_prop_unit(&last_prop, CSS_width,
CSS_UNIT_PIXEL, width);
css_add_prop_unit(&last_prop, CSS_height,
CSS_UNIT_PIXEL, height);
/* border */
val = css_attr_int(box, CSS_ID_border, -1);
if (val >= 0) {
css_add_prop_unit(&last_prop, CSS_border_left_width,
CSS_UNIT_PIXEL, val);
css_add_prop_unit(&last_prop, CSS_border_right_width,
CSS_UNIT_PIXEL, val);
css_add_prop_unit(&last_prop, CSS_border_top_width,
CSS_UNIT_PIXEL, val);
css_add_prop_unit(&last_prop, CSS_border_bottom_width,
CSS_UNIT_PIXEL, val);
css_add_prop_int(&last_prop, CSS_border_left_style,
CSS_BORDER_STYLE_SOLID);
css_add_prop_int(&last_prop, CSS_border_right_style,
CSS_BORDER_STYLE_SOLID);
css_add_prop_int(&last_prop, CSS_border_top_style,
CSS_BORDER_STYLE_SOLID);
css_add_prop_int(&last_prop, CSS_border_bottom_style,
CSS_BORDER_STYLE_SOLID);
}
/* margins */
val = css_attr_int(box, CSS_ID_hspace, -1);
if (val >= 0) {
css_add_prop_unit(&last_prop, CSS_margin_left,
CSS_UNIT_PIXEL, val);
css_add_prop_unit(&last_prop, CSS_margin_right,
CSS_UNIT_PIXEL, val);
}
val = css_attr_int(box, CSS_ID_vspace, -1);
if (val >= 0) {
css_add_prop_unit(&last_prop, CSS_margin_top,
CSS_UNIT_PIXEL, val);
css_add_prop_unit(&last_prop, CSS_margin_bottom,
CSS_UNIT_PIXEL, val);
}
break;
case CSS_ID_body:
value = css_attr_str(box, CSS_ID_text);
if (value && !css_get_color(&color, value)) {
css_add_prop_int(&last_prop, CSS_color, color);
}
/* we handle link by adding a new stylesheet entry */
value = css_attr_str(box, CSS_ID_link);
if (value && !css_get_color(&color, value)) {
CSSStyleSheetEntry *e;
CSSSimpleSelector ss1, *ss = &ss1;
CSSProperty **last_prop;
CSSStyleSheetAttributeEntry **plast_attr;
/* specific to <a href="xxx"> tag */
memset(ss, 0, sizeof(CSSSimpleSelector));
ss->tag = CSS_ID_a;
plast_attr = &ss->attrs;
add_attribute(&plast_attr, CSS_ID_href, CSS_ATTR_OP_SET, "");
e = add_style_entry(s->style_sheet, ss, CSS_MEDIA_ALL);
/* add color property */
last_prop = &e->props;
css_add_prop_int(&last_prop, CSS_color, color);
}
break;
case CSS_ID_font:
case CSS_ID_basefont:
/* size */
value = css_attr_str(box, CSS_ID_size);
if (value) {
val = strtol(value, NULL, 10);
if (value[0] == '+' || value[0] == '-') {
/* relative size */
val += s->base_font;
}
if (val < 1)
val = 1;
else if (val > 7)
val = 7;
if (box->tag == CSS_ID_basefont)
s->base_font = val;
/* XXX: incorrect for basefont */
css_add_prop_unit(&last_prop, CSS_font_size,
CSS_UNIT_IN, get_font_size(val - 1));
}
/* color */
value = css_attr_str(box, CSS_ID_color);
if (value && !css_get_color(&color, value)) {
css_add_prop_int(&last_prop, CSS_color, color);
}
break;
case CSS_ID_br:
value = css_attr_strlower(box, CSS_ID_clear);
if (value) {
val = css_get_enum(value, "none,left,right,all");
if (val >= 0) {
css_add_prop_int(&last_prop, CSS_clear, val + CSS_CLEAR_NONE);
}
}
break;
case CSS_ID_table:
val = css_attr_int(box, CSS_ID_width, -1);
if (val >= 0) {
css_add_prop_unit(&last_prop, CSS_width,
CSS_UNIT_PIXEL, val);
}
border = css_attr_int(box, CSS_ID_border, -1);
if (border >= 0) {
css_add_prop_unit(&last_prop, CSS_border_left_width,
CSS_UNIT_PIXEL, border);
css_add_prop_unit(&last_prop, CSS_border_right_width,
CSS_UNIT_PIXEL, border);
css_add_prop_unit(&last_prop, CSS_border_top_width,
CSS_UNIT_PIXEL, border);
css_add_prop_unit(&last_prop, CSS_border_bottom_width,
CSS_UNIT_PIXEL, border);
css_add_prop_int(&last_prop, CSS_border_left_style,
CSS_BORDER_STYLE_GROOVE);
css_add_prop_int(&last_prop, CSS_border_right_style,
CSS_BORDER_STYLE_GROOVE);
css_add_prop_int(&last_prop, CSS_border_top_style,
CSS_BORDER_STYLE_GROOVE);
css_add_prop_int(&last_prop, CSS_border_bottom_style,
CSS_BORDER_STYLE_GROOVE);
/* cell have a border of 1 pixel width */
if (border > 1)
border = 1;
}
val = css_attr_int(box, CSS_ID_cellspacing, -1);
if (val >= 0) {
css_add_prop_unit(&last_prop, CSS_border_spacing_horizontal,
CSS_UNIT_PIXEL, val);
css_add_prop_unit(&last_prop, CSS_border_spacing_vertical,
CSS_UNIT_PIXEL, val);
}
padding = css_attr_int(box, CSS_ID_cellpadding, -1);
/* apply border styles to each cell (cannot be done exactly by
CSS) */
if (border >= 1 || padding >= 1)
html_table_borders(box, border, padding);
break;
case CSS_ID_col:
case CSS_ID_colgroup:
val = css_attr_int(box, CSS_ID_width, -1);
if (val >= 0) {
css_add_prop_unit(&last_prop, CSS_width, CSS_UNIT_PIXEL, val);
}
break;
case CSS_ID_td:
val = css_attr_int(box, CSS_ID_width, -1);
if (val >= 0) {
css_add_prop_unit(&last_prop, CSS_width, CSS_UNIT_PIXEL, val);
}
val = css_attr_int(box, CSS_ID_height, -1);
if (val >= 0) {
css_add_prop_unit(&last_prop, CSS_height, CSS_UNIT_PIXEL, val);
}
break;
case CSS_ID_ol:
case CSS_ID_li:
/* NOTE: case is important */
/* XXX: currently cannot propagate for LI tag */
value = css_attr_str(box, CSS_ID_type);
if (value) {
val = css_get_enum(value, "1,a,A,i,I");
if (val >= 0) {
val += CSS_LIST_STYLE_TYPE_DECIMAL;
css_add_prop_int(&last_prop, CSS_list_style_type, val);
}
}
/* XXX: add value, but needs a css extension */
if (box->tag == CSS_ID_ol)
val = CSS_ID_start;
else
val = CSS_ID_value;
/* NOTE: only works with digits */
val = css_attr_int(box, val, 0);
if (val > 0) {
args[0].type = CSS_VALUE_IDENT;
args[0].u.val = CSS_ID_list_item;
args[1].type = CSS_VALUE_INTEGER;
args[1].u.val = val - 1; /* currently needs minus 1 */
css_add_prop_values(&last_prop, CSS_counter_reset, 2, args);
}
break;
/* controls */
case CSS_ID_button:
type = CSS_ID_submit;
value = css_attr_strlower(box, CSS_ID_type);
if (value)
type = css_new_ident(value);
if (type != CSS_ID_button && type != CSS_ID_reset)
type = CSS_ID_submit;
goto parse_input;
case CSS_ID_input:
type = CSS_ID_text;
value = css_attr_strlower(box, CSS_ID_type);
if (value) {
type = css_new_ident(value);
} else {
CSSAttribute *attr;
/* NOTE: we add an attribute for css rules */
attr = box_new_attr(CSS_ID_type, "text");
if (attr) {
attr->next = box->attrs;
box->attrs = attr;
}
}
parse_input:
if (type == CSS_ID_image)
goto parse_img;
if (type == CSS_ID_button ||
type == CSS_ID_reset ||
type == CSS_ID_submit ||
type == CSS_ID_text ||
type == CSS_ID_password ||
type == CSS_ID_file) {
/* put text inside the box (XXX: use attr() in content
attribute ? */
value = css_attr_str(box, CSS_ID_value);
if (value) {
css_set_text_string(box, value);
}
}
/* size */
if (type == CSS_ID_text ||
type == CSS_ID_password) {
val = css_attr_int(box, CSS_ID_size, 10);
css_add_prop_unit(&last_prop, CSS_width,
CSS_UNIT_EM, val << CSS_LENGTH_FRAC_BITS);
}
break;
case CSS_ID_textarea:
val = css_attr_int(box, CSS_ID_cols, 10);
if (val < 1)
val = 1;
css_add_prop_unit(&last_prop, CSS_width,
CSS_UNIT_EM, val << CSS_LENGTH_FRAC_BITS);
val = css_attr_int(box, CSS_ID_rows, 1);
if (val < 1)
val = 1;
css_add_prop_unit(&last_prop, CSS_height,
CSS_UNIT_EM, val << CSS_LENGTH_FRAC_BITS);
break;
case CSS_ID_select:
val = css_attr_int(box, CSS_ID_size, 1);
if (val < 1)
val = 1;
css_add_prop_unit(&last_prop, CSS_height,
CSS_UNIT_EM, val << CSS_LENGTH_FRAC_BITS);
break;
default:
break;
}
/* generic attributes */
value = css_attr_str(box, CSS_ID_bgcolor);
if (value && !css_get_color(&color, value)) {
css_add_prop_int(&last_prop, CSS_background_color, color);
}
value = css_attr_strlower(box, CSS_ID_align);
if (value) {
switch (box->tag) {
case CSS_ID_caption:
/* use caption-side property for captions */
val = css_get_enum(value, "top,bottom,left,right");
if (val >= 0) {
css_add_prop_int(&last_prop, CSS_caption_side, val);
}
break;
case CSS_ID_img:
/* floating images */
val = css_get_enum(value, "left,right");
if (val >= 0) {
css_add_prop_int(&last_prop, CSS_float, val + CSS_FLOAT_LEFT);
}
break;
case CSS_ID_table:
val = css_get_enum(value, "left,right,center");
if (val == CSS_TEXT_ALIGN_LEFT || val == CSS_TEXT_ALIGN_RIGHT) {
css_add_prop_int(&last_prop, CSS_float, val + CSS_FLOAT_LEFT);
} else if (val == CSS_TEXT_ALIGN_CENTER) {
css_add_prop_int(&last_prop, CSS_margin_left, CSS_AUTO);
css_add_prop_int(&last_prop, CSS_margin_right, CSS_AUTO);
}
break;
default:
val = css_get_enum(value, "left,right,center");
if (val >= 0) {
css_add_prop_int(&last_prop, CSS_text_align, val);
}
break;
}
}
value = css_attr_strlower(box, CSS_ID_valign);
if (value) {
val = css_get_enum(value, "baseline,,,top,,middle,bottom");
if (val >= 0) {
css_add_prop_int(&last_prop, CSS_vertical_align, val);
}
}
val = css_attr_int(box, CSS_ID_colspan, 1);
if (val > 1) {
css_add_prop_unit(&last_prop, CSS_column_span, CSS_VALUE_INTEGER, val);
}
val = css_attr_int(box, CSS_ID_rowspan, 1);
if (val > 1) {
css_add_prop_unit(&last_prop, CSS_row_span, CSS_VALUE_INTEGER, val);
}
value = css_attr_str(box, CSS_ID_style);
if (value) {
CSSParseState b1, *b = &b1;
b->ptr = NULL;
b->line_num = s->line_num; /* XXX: slightly incorrect */
b->filename = s->filename;
b->ignore_case = s->ignore_case;
*last_prop = css_parse_properties(b, value);
}
box->properties = first_prop;
}
/* flags: only XML_IGNORE_CASE is handled */
void css_parse_style_sheet(CSSStyleSheet *s, CSSParseState *b)
{
char value[1024];
char tag[64];
char tag_id[64];
char *q;
int ch, media, val, last_tree_op, i;
CSSStyleSheetEntry *e, **first_eprops;
CSSSimpleSelector ss2, *ss = &ss2, *last_ss, *ss1;
CSSProperty *props;
ch = bgetc(b);
media = CSS_MEDIA_ALL;
for (;;) {
redo:
first_eprops = s->plast_entry;
bskip_spaces(b, &ch);
if (ch == EOF)
break;
/* eat inserted HTML comments for compatible STYLE tag parsing */
if (ch == '<') {
beat(b, &ch, "<!--");
goto redo;
} else if (ch == '-') {
beat(b, &ch, "-->");
goto redo;
}
/* handle '@media { ... }' */
if (ch == '@') {
ch = bgetc(b);
read_ident(b, &ch, tag, sizeof(tag));
switch (css_get_enum(tag, "media,page")) {
case 0:
/* @media */
media = 0;
for (;;) {
bskip_spaces(b, &ch);
read_ident(b, &ch, tag, sizeof(tag));
val = css_get_enum(tag, "tty,screen,print,tv,speech,all");
if (val < 0 || val == 5)
media = CSS_MEDIA_ALL;
else
media |= (1 << val);
bskip_spaces(b, &ch);
if (ch == ',') {
ch = bgetc(b);
} else if (ch == '{' || ch == EOF) {
ch = bgetc(b);
break;
}
}
goto redo;
case 1:
/* @page */
bskip_spaces(b, &ch);
if (ch != '{') {
read_ident(b, &ch, tag_id, sizeof(tag_id));
bskip_spaces(b, &ch);
}
memset(ss, 0, sizeof(CSSSimpleSelector));
ss->tag = css_new_ident("@page");
if (tag_id[0] != '\0')
ss->tag_id = css_new_ident(tag_id);
add_style_entry(s, ss, media);
goto parse_props;
default:
css_error1(b, "unrecognized css directive '@%s'", tag);
break;
}
} else if (ch == '}') {
/* XXX: end of media, should unstack */
ch = bgetc(b);
goto redo;
}
/* parse a selector list */
for (;;) {
/* parse simple selectors with operations */
last_ss = NULL;
last_tree_op = CSS_TREE_OP_NONE;
for (;;) {
int tree_op;
bskip_spaces(b, &ch);
parse_simple_selector(ss, b, &ch);
bskip_spaces(b, &ch);
ss->tree_op = last_tree_op;
ss->next = last_ss;
if (ch == '+') {
tree_op = CSS_TREE_OP_PRECEEDED;
ch = bgetc(b);
goto add_tree;
} else if (ch == '>') {
tree_op = CSS_TREE_OP_CHILD;
ch = bgetc(b);
goto add_tree;
} else if (isalpha(ch)) {
tree_op = CSS_TREE_OP_DESCENDANT;
add_tree:
ss1 = malloc(sizeof(CSSSimpleSelector));
if (ss1) {
memcpy(ss1, ss, sizeof(CSSSimpleSelector));
last_ss = ss1;
}
last_tree_op = tree_op;
} else {
/* other char: exit */
break;
}
}
add_style_entry(s, ss, media);
/* get next selector, if present */
if (ch != ',')
break;
ch = bgetc(b);
}
parse_props:
/* expect start of properties */
if (ch != '{')
break;
ch = bgetc(b);
q = value;
while (ch != '}' && ch != EOF) {
if ((q - value) < (int)sizeof(value) - 1)
*q++ = ch;
ch = bgetc(b);
}
*q = '\0';
if (ch == '}')
ch = bgetc(b);
/* the properties are extracted, now add them to each tag */
/* XXX: should locate entries first, then add, to avoid adding
duplicate entries */
/* XXX: should put font properties first to avoid em/ex units
problems, but it would still not be sufficient. */
props = css_parse_properties(b, value);
i = 0;
for (e = *first_eprops; e != NULL; e = e->next) {
if (i == 0)
e->props = props;
else
e->props = dup_properties(props);
i++;
}
}
#ifdef DEBUG
css_dump_style_sheet(s);
#endif
}
