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-rw-r--r--include/mupdf/html.h45
-rw-r--r--source/html/css-apply.c598
-rw-r--r--source/html/css-parse.c66
-rw-r--r--source/html/html-layout.c34
4 files changed, 380 insertions, 363 deletions
diff --git a/include/mupdf/html.h b/include/mupdf/html.h
index 2b1d127f..35d4be8d 100644
--- a/include/mupdf/html.h
+++ b/include/mupdf/html.h
@@ -4,9 +4,8 @@
#include "mupdf/fitz.h"
typedef struct fz_html_font_set_s fz_html_font_set;
-typedef struct rule fz_css;
-typedef struct property fz_css_property;
-typedef struct box fz_html;
+typedef struct fz_css_rule_s fz_css_rule;
+typedef struct fz_css_match_s fz_css_match;
struct fz_html_font_set_s
{
@@ -24,11 +23,11 @@ enum
CSS_URI,
};
-struct rule
+struct fz_css_rule_s
{
struct selector *selector;
struct property *declaration;
- struct rule *next;
+ fz_css_rule *next;
};
struct selector
@@ -57,9 +56,17 @@ struct property
struct property *next;
};
-struct style
+struct value
{
- struct style *up;
+ int type;
+ const char *data;
+ struct value *args; /* function arguments */
+ struct value *next;
+};
+
+struct fz_css_match_s
+{
+ fz_css_match *up;
int count;
struct {
const char *name;
@@ -68,14 +75,6 @@ struct style
} prop[64];
};
-struct value
-{
- int type;
- const char *data;
- struct value *args; /* function arguments */
- struct value *next;
-};
-
enum { DIS_NONE, DIS_BLOCK, DIS_INLINE, DIS_LIST_ITEM };
enum { POS_STATIC, POS_RELATIVE, POS_ABSOLUTE, POS_FIXED };
enum { WS_NORMAL, WS_PRE, WS_NOWRAP, WS_PRE_WRAP, WS_PRE_LINE };
@@ -153,20 +152,14 @@ struct flow
struct flow *next;
};
-struct rule *fz_parse_css(fz_context *ctx, struct rule *old, const char *source);
+fz_css_rule *fz_parse_css(fz_context *ctx, fz_css_rule *old, const char *source);
struct property *fz_parse_css_properties(fz_context *ctx, const char *source);
-struct rule *fz_new_css_rule(fz_context *ctx, struct selector *selector, struct property *declaration);
-struct selector *fz_new_css_selector(fz_context *ctx, const char *name);
-struct condition *fz_new_css_condition(fz_context *ctx, int type, const char *key, const char *val);
-struct property *fz_new_css_property(fz_context *ctx, const char *name, struct value *value, int spec);
-struct value *fz_new_css_value(fz_context *ctx, int type, const char *value);
-
-int fz_get_css_style_property_display(struct style *node);
+void fz_match_css(fz_context *ctx, fz_css_match *match, fz_css_rule *rule, fz_xml *node);
-void apply_styles(fz_context *ctx, struct style *style, struct rule *rule, fz_xml *node);
-void default_computed_style(struct computed_style *cstyle);
-void compute_style(fz_context *ctx, fz_html_font_set *set, struct computed_style *cstyle, struct style *style);
+int fz_get_css_match_display(fz_css_match *node);
+void fz_default_css_style(fz_context *ctx, struct computed_style *style);
+void fz_apply_css_style(fz_context *ctx, fz_html_font_set *set, struct computed_style *style, fz_css_match *match);
float fz_from_css_number(struct number, float em, float width);
float fz_from_css_number_scale(struct number number, float scale, float em, float width);
diff --git a/source/html/css-apply.c b/source/html/css-apply.c
index a1b8d800..aa02a1b0 100644
--- a/source/html/css-apply.c
+++ b/source/html/css-apply.c
@@ -1,61 +1,86 @@
#include "mupdf/html.h"
-static void add_property(struct style *style, const char *name, struct value *value, int spec);
-
-struct rule *
-fz_new_css_rule(fz_context *ctx, struct selector *selector, struct property *declaration)
-{
- struct rule *rule = fz_malloc_struct(ctx, struct rule);
- rule->selector = selector;
- rule->declaration = declaration;
- rule->next = NULL;
- return rule;
-}
+static const char *inherit_list[] = {
+ "color",
+ "direction",
+ "font-family",
+ "font-size",
+ "font-style",
+ "font-variant",
+ "font-weight",
+ "letter-spacing",
+ "line-height",
+ "list-style-image",
+ "list-style-position",
+ "list-style-type",
+ "orphans",
+ "quotes",
+ "text-align",
+ "text-indent",
+ "text-transform",
+ "visibility",
+ "white-space",
+ "widows",
+ "word-spacing",
+};
-struct selector *
-fz_new_css_selector(fz_context *ctx, const char *name)
-{
- struct selector *sel = fz_malloc_struct(ctx, struct selector);
- sel->name = name ? strdup(name) : NULL;
- sel->combine = 0;
- sel->cond = NULL;
- sel->left = NULL;
- sel->right = NULL;
- sel->next = NULL;
- return sel;
-}
+static const char *border_width_kw[] = {
+ "medium",
+ "thick",
+ "thin",
+};
-struct condition *
-fz_new_css_condition(fz_context *ctx, int type, const char *key, const char *val)
-{
- struct condition *cond = fz_malloc_struct(ctx, struct condition);
- cond->type = type;
- cond->key = key ? strdup(key) : NULL;
- cond->val = val ? strdup(val) : NULL;
- cond->next = NULL;
- return cond;
-}
+static const char *border_style_kw[] = {
+ "dashed",
+ "dotted",
+ "double",
+ "groove",
+ "hidden",
+ "inset",
+ "none",
+ "outset",
+ "ridge",
+ "solid",
+};
-struct property *
-fz_new_css_property(fz_context *ctx, const char *name, struct value *value, int spec)
-{
- struct property *prop = fz_malloc_struct(ctx, struct property);
- prop->name = strdup(name);
- prop->value = value;
- prop->spec = spec;
- prop->next = NULL;
- return prop;
-}
+static const char *color_kw[] = {
+ "aqua",
+ "black",
+ "blue",
+ "fuchsia",
+ "gray",
+ "green",
+ "lime",
+ "maroon",
+ "navy",
+ "olive",
+ "orange",
+ "purple",
+ "red",
+ "silver",
+ "teal",
+ "transparent",
+ "white",
+ "yellow",
+};
-struct value *
-fz_new_css_value(fz_context *ctx, int type, const char *data)
+static int
+keyword_in_list(const char *name, const char **list, int n)
{
- struct value *val = fz_malloc_struct(ctx, struct value);
- val->type = type;
- val->data = strdup(data);
- val->args = NULL;
- val->next = NULL;
- return val;
+ int l = 0;
+ int r = n - 1;
+ while (l <= r)
+ {
+ int m = (l + r) >> 1;
+ int c = strcmp(name, list[m]);
+ if (c < 0)
+ r = m - 1;
+ else if (c > 0)
+ l = m + 1;
+ else
+ return 1;
+ }
+ return 0;
}
/*
@@ -153,104 +178,6 @@ selector_specificity(struct selector *sel)
}
/*
- * Pretty printing
- */
-
-void
-print_value(struct value *val)
-{
- printf("%s", val->data);
- if (val->args)
- {
- printf("(");
- print_value(val->args);
- printf(")");
- }
- if (val->next)
- {
- printf(" ");
- print_value(val->next);
- }
-}
-
-void
-print_property(struct property *prop)
-{
- printf("\t%s: ", prop->name);
- print_value(prop->value);
- printf(" !%d;\n", prop->spec);
-}
-
-void
-print_condition(struct condition *cond)
-{
- if (cond->type == '=')
- printf("[%s=%s]", cond->key, cond->val);
- else if (cond->type == '[')
- printf("[%s]", cond->key);
- else
- printf("%c%s", cond->type, cond->val);
- if (cond->next)
- print_condition(cond->next);
-}
-
-void
-print_selector(struct selector *sel)
-{
- if (sel->combine)
- {
-putchar('(');
- print_selector(sel->left);
- if (sel->combine == ' ')
- printf(" ");
- else
- printf(" %c ", sel->combine);
- print_selector(sel->right);
-putchar(')');
- }
- else if (sel->name)
- printf("%s", sel->name);
- else
- printf("*");
- if (sel->cond)
- {
- print_condition(sel->cond);
- }
-}
-
-void
-print_rule(struct rule *rule)
-{
- struct selector *sel;
- struct property *prop;
-
- for (sel = rule->selector; sel; sel = sel->next)
- {
- print_selector(sel);
- printf(" !%d", selector_specificity(sel));
- if (sel->next)
- printf(", ");
- }
-
- printf("\n{\n");
- for (prop = rule->declaration; prop; prop = prop->next)
- {
- print_property(prop);
- }
- printf("}\n");
-}
-
-void
-print_rules(struct rule *rule)
-{
- while (rule)
- {
- print_rule(rule);
- rule = rule->next;
- }
-}
-
-/*
* Selector matching
*/
@@ -366,19 +293,6 @@ match_selector(struct selector *sel, fz_xml *node)
* Annotating nodes with properties and expanding shorthand forms.
*/
-static const char *border_width_kw[] = {
- "thin", "medium", "thick",
-};
-
-static const char *border_style_kw[] = {
- "none", "hidden", "dotted", "dashed", "solid", "double", "groove", "ridge", "inset", "outset",
-};
-
-static const char *color_kw[] = {
- "transparent", "maroon", "red", "orange", "yellow", "olive", "purple", "fuchsia", "white",
- "lime", "green", "navy", "blue", "aqua", "teal", "black", "silver", "gray",
-};
-
static int
count_values(struct value *value)
{
@@ -391,18 +305,20 @@ count_values(struct value *value)
return n;
}
+static void add_property(fz_css_match *match, const char *name, struct value *value, int spec);
+
static void
-add_shorthand_trbl(struct style *style, struct value *value, int spec,
+add_shorthand_trbl(fz_css_match *match, struct value *value, int spec,
const char *name_t, const char *name_r, const char *name_b, const char *name_l)
{
int n = count_values(value);
if (n == 1)
{
- add_property(style, name_t, value, spec);
- add_property(style, name_r, value, spec);
- add_property(style, name_b, value, spec);
- add_property(style, name_l, value, spec);
+ add_property(match, name_t, value, spec);
+ add_property(match, name_r, value, spec);
+ add_property(match, name_b, value, spec);
+ add_property(match, name_l, value, spec);
}
if (n == 2)
@@ -410,10 +326,10 @@ add_shorthand_trbl(struct style *style, struct value *value, int spec,
struct value *a = value;
struct value *b = value->next;
- add_property(style, name_t, a, spec);
- add_property(style, name_r, b, spec);
- add_property(style, name_b, a, spec);
- add_property(style, name_l, b, spec);
+ add_property(match, name_t, a, spec);
+ add_property(match, name_r, b, spec);
+ add_property(match, name_b, a, spec);
+ add_property(match, name_l, b, spec);
}
if (n == 3)
@@ -422,10 +338,10 @@ add_shorthand_trbl(struct style *style, struct value *value, int spec,
struct value *b = value->next;
struct value *c = value->next->next;
- add_property(style, name_t, a, spec);
- add_property(style, name_r, b, spec);
- add_property(style, name_b, c, spec);
- add_property(style, name_l, b, spec);
+ add_property(match, name_t, a, spec);
+ add_property(match, name_r, b, spec);
+ add_property(match, name_b, c, spec);
+ add_property(match, name_l, b, spec);
}
if (n == 4)
@@ -435,110 +351,95 @@ add_shorthand_trbl(struct style *style, struct value *value, int spec,
struct value *c = value->next->next;
struct value *d = value->next->next->next;
- add_property(style, name_t, a, spec);
- add_property(style, name_r, b, spec);
- add_property(style, name_b, c, spec);
- add_property(style, name_l, d, spec);
+ add_property(match, name_t, a, spec);
+ add_property(match, name_r, b, spec);
+ add_property(match, name_b, c, spec);
+ add_property(match, name_l, d, spec);
}
}
static void
-add_shorthand_margin(struct style *style, struct value *value, int spec)
+add_shorthand_margin(fz_css_match *match, struct value *value, int spec)
{
- add_shorthand_trbl(style, value, spec,
+ add_shorthand_trbl(match, value, spec,
"margin-top", "margin-right", "margin-bottom", "margin-left");
}
static void
-add_shorthand_padding(struct style *style, struct value *value, int spec)
+add_shorthand_padding(fz_css_match *match, struct value *value, int spec)
{
- add_shorthand_trbl(style, value, spec,
+ add_shorthand_trbl(match, value, spec,
"padding-top", "padding-right", "padding-bottom", "padding-left");
}
static void
-add_shorthand_border_width(struct style *style, struct value *value, int spec)
+add_shorthand_border_width(fz_css_match *match, struct value *value, int spec)
{
- add_shorthand_trbl(style, value, spec,
+ add_shorthand_trbl(match, value, spec,
"border-width-top", "border-width-right", "border-width-bottom", "border-width-left");
}
static void
-add_shorthand_border(struct style *style, struct value *value, int spec)
+add_shorthand_border(fz_css_match *match, struct value *value, int spec)
{
- int i;
-
while (value)
{
if (value->type == CSS_COLOR)
{
- add_property(style, "border-color", value, spec);
+ add_property(match, "border-color", value, spec);
}
else if (value->type == CSS_KEYWORD)
{
- for (i = 0; i < nelem(border_width_kw); ++i)
+ if (keyword_in_list(value->data, border_width_kw, nelem(border_width_kw)))
{
- if (!strcmp(value->data, border_width_kw[i]))
- {
- add_property(style, "border-width-top", value, spec);
- add_property(style, "border-width-right", value, spec);
- add_property(style, "border-width-bottom", value, spec);
- add_property(style, "border-width-left", value, spec);
- goto next;
- }
+ add_property(match, "border-width-top", value, spec);
+ add_property(match, "border-width-right", value, spec);
+ add_property(match, "border-width-bottom", value, spec);
+ add_property(match, "border-width-left", value, spec);
}
- for (i = 0; i < nelem(border_style_kw); ++i)
+ else if (keyword_in_list(value->data, border_style_kw, nelem(border_style_kw)))
{
- if (!strcmp(value->data, border_style_kw[i]))
- {
- add_property(style, "border-style", value, spec);
- goto next;
- }
+ add_property(match, "border-style", value, spec);
}
- for (i = 0; i < nelem(color_kw); ++i)
+ else if (keyword_in_list(value->data, color_kw, nelem(color_kw)))
{
- if (!strcmp(value->data, color_kw[i]))
- {
- add_property(style, "border-color", value, spec);
- goto next;
- }
+ add_property(match, "border-color", value, spec);
}
}
else
{
- add_property(style, "border-width-top", value, spec);
- add_property(style, "border-width-right", value, spec);
- add_property(style, "border-width-bottom", value, spec);
- add_property(style, "border-width-left", value, spec);
+ add_property(match, "border-width-top", value, spec);
+ add_property(match, "border-width-right", value, spec);
+ add_property(match, "border-width-bottom", value, spec);
+ add_property(match, "border-width-left", value, spec);
}
-next:
value = value->next;
}
}
static void
-add_property(struct style *style, const char *name, struct value *value, int spec)
+add_property(fz_css_match *match, const char *name, struct value *value, int spec)
{
int i;
if (!strcmp(name, "margin"))
{
- add_shorthand_margin(style, value, spec);
+ add_shorthand_margin(match, value, spec);
return;
}
if (!strcmp(name, "padding"))
{
- add_shorthand_padding(style, value, spec);
+ add_shorthand_padding(match, value, spec);
return;
}
if (!strcmp(name, "border-width"))
{
- add_shorthand_border_width(style, value, spec);
+ add_shorthand_border_width(match, value, spec);
return;
}
if (!strcmp(name, "border"))
{
- add_shorthand_border(style, value, spec);
+ add_shorthand_border(match, value, spec);
return;
}
@@ -549,33 +450,33 @@ add_property(struct style *style, const char *name, struct value *value, int spe
/* TODO: list-style */
/* TODO: background */
- for (i = 0; i < style->count; ++i)
+ for (i = 0; i < match->count; ++i)
{
- if (!strcmp(style->prop[i].name, name))
+ if (!strcmp(match->prop[i].name, name))
{
- if (style->prop[i].spec <= spec)
+ if (match->prop[i].spec <= spec)
{
- style->prop[i].value = value;
- style->prop[i].spec = spec;
+ match->prop[i].value = value;
+ match->prop[i].spec = spec;
}
return;
}
}
- if (style->count + 1 >= nelem(style->prop))
+ if (match->count + 1 >= nelem(match->prop))
{
// fz_warn(ctx, "too many css properties");
return;
}
- style->prop[style->count].name = name;
- style->prop[style->count].value = value;
- style->prop[style->count].spec = spec;
- ++style->count;
+ match->prop[match->count].name = name;
+ match->prop[match->count].value = value;
+ match->prop[match->count].spec = spec;
+ ++match->count;
}
void
-apply_styles(fz_context *ctx, struct style *style, struct rule *rule, fz_xml *node)
+fz_match_css(fz_context *ctx, fz_css_match *match, fz_css_rule *rule, fz_xml *node)
{
struct selector *sel;
struct property *prop;
@@ -589,7 +490,7 @@ apply_styles(fz_context *ctx, struct style *style, struct rule *rule, fz_xml *no
if (match_selector(sel, node))
{
for (prop = rule->declaration; prop; prop = prop->next)
- add_property(style, prop->name, prop->value, selector_specificity(sel));
+ add_property(match, prop->name, prop->value, selector_specificity(sel));
break;
}
sel = sel->next;
@@ -603,75 +504,44 @@ apply_styles(fz_context *ctx, struct style *style, struct rule *rule, fz_xml *no
prop = fz_parse_css_properties(ctx, s);
while (prop)
{
- add_property(style, prop->name, prop->value, INLINE_SPECIFICITY);
+ add_property(match, prop->name, prop->value, INLINE_SPECIFICITY);
prop = prop->next;
}
// TODO: free props
}
}
-static const char *inherit_list[] = {
- "color", "direction",
- "font-family", "font-size", "font-style", "font-variant", "font-weight",
- "letter-spacing", "line-height",
- "list-style-image", "list-style-position", "list-style-type",
- "orphans", "quotes", "text-align", "text-indent", "text-transform",
- "visibility", "white-space", "widows", "word-spacing",
-
- /* this is not supposed to be inherited: */
- "vertical-align",
-};
-
static struct value *
-get_raw_property(struct style *node, const char *name)
+value_from_raw_property(fz_css_match *match, const char *name)
{
int i;
- for (i = 0; i < node->count; ++i)
- if (!strcmp(node->prop[i].name, name))
- return node->prop[i].value;
+ for (i = 0; i < match->count; ++i)
+ if (!strcmp(match->prop[i].name, name))
+ return match->prop[i].value;
return NULL;
}
-static int
-should_inherit_property(const char *name)
-{
- int l = 0;
- int r = nelem(inherit_list) - 1;
- while (l <= r)
- {
- int m = (l + r) >> 1;
- int c = strcmp(name, inherit_list[m]);
- if (c < 0)
- r = m - 1;
- else if (c > 0)
- l = m + 1;
- else
- return 1;
- }
- return 0;
-}
-
static struct value *
-get_style_property(struct style *node, const char *name)
+value_from_property(fz_css_match *match, const char *name)
{
struct value *value;
- value = get_raw_property(node, name);
- if (node->up)
+ value = value_from_raw_property(match, name);
+ if (match->up)
{
if (value && !strcmp(value->data, "inherit"))
- return get_style_property(node->up, name);
- if (!value && should_inherit_property(name))
- return get_style_property(node->up, name);
+ return value_from_property(match->up, name);
+ if (!value && keyword_in_list(name, inherit_list, nelem(inherit_list)))
+ return value_from_property(match->up, name);
}
return value;
}
static const char *
-get_style_property_string(struct style *node, const char *name, const char *initial)
+string_from_property(fz_css_match *match, const char *name, const char *initial)
{
struct value *value;
- value = get_style_property(node, name);
+ value = value_from_property(match, name);
if (!value)
return initial;
return value->data;
@@ -730,15 +600,15 @@ number_from_value(struct value *value, float initial, int initial_unit)
}
static struct number
-number_from_property(struct style *node, const char *property, float initial, int initial_unit)
+number_from_property(fz_css_match *match, const char *property, float initial, int initial_unit)
{
- return number_from_value(get_style_property(node, property), initial, initial_unit);
+ return number_from_value(value_from_property(match, property), initial, initial_unit);
}
static struct number
-border_width_from_property(struct style *node, const char *property)
+border_width_from_property(fz_css_match *match, const char *property)
{
- struct value *value = get_style_property(node, property);
+ struct value *value = value_from_property(match, property);
if (value)
{
if (!strcmp(value->data, "thin"))
@@ -848,15 +718,15 @@ color_from_value(struct value *value, struct color initial)
}
static struct color
-color_from_property(struct style *node, const char *property, struct color initial)
+color_from_property(fz_css_match *match, const char *property, struct color initial)
{
- return color_from_value(get_style_property(node, property), initial);
+ return color_from_value(value_from_property(match, property), initial);
}
int
-fz_get_css_style_property_display(struct style *node)
+fz_get_css_match_display(fz_css_match *match)
{
- struct value *value = get_style_property(node, "display");
+ struct value *value = value_from_property(match, "display");
if (value)
{
if (!strcmp(value->data, "none"))
@@ -872,9 +742,9 @@ fz_get_css_style_property_display(struct style *node)
}
static int
-get_style_property_white_space(struct style *node)
+white_space_from_property(fz_css_match *match)
{
- struct value *value = get_style_property(node, "white-space");
+ struct value *value = value_from_property(match, "white-space");
if (value)
{
if (!strcmp(value->data, "normal")) return WS_NORMAL;
@@ -887,7 +757,7 @@ get_style_property_white_space(struct style *node)
}
void
-default_computed_style(struct computed_style *style)
+fz_default_css_style(fz_context *ctx, struct computed_style *style)
{
memset(style, 0, sizeof *style);
style->text_align = TA_LEFT;
@@ -897,18 +767,18 @@ default_computed_style(struct computed_style *style)
}
void
-compute_style(fz_context *ctx, fz_html_font_set *set, struct computed_style *style, struct style *node)
+fz_apply_css_style(fz_context *ctx, fz_html_font_set *set, struct computed_style *style, fz_css_match *match)
{
struct value *value;
struct color black = { 0, 0, 0, 255 };
struct color transparent = { 0, 0, 0, 0 };
- default_computed_style(style);
+ fz_default_css_style(ctx, style);
- style->white_space = get_style_property_white_space(node);
+ style->white_space = white_space_from_property(match);
- value = get_style_property(node, "text-align");
+ value = value_from_property(match, "text-align");
if (value)
{
if (!strcmp(value->data, "left"))
@@ -921,7 +791,7 @@ compute_style(fz_context *ctx, fz_html_font_set *set, struct computed_style *sty
style->text_align = TA_JUSTIFY;
}
- value = get_style_property(node, "vertical-align");
+ value = value_from_property(match, "vertical-align");
if (value)
{
if (!strcmp(value->data, "baseline"))
@@ -936,7 +806,7 @@ compute_style(fz_context *ctx, fz_html_font_set *set, struct computed_style *sty
style->vertical_align = VA_BOTTOM;
}
- value = get_style_property(node, "font-size");
+ value = value_from_property(match, "font-size");
if (value)
{
if (!strcmp(value->data, "xx-large")) style->font_size = make_number(20, N_NUMBER);
@@ -955,7 +825,7 @@ compute_style(fz_context *ctx, fz_html_font_set *set, struct computed_style *sty
style->font_size = make_number(1, N_SCALE);
}
- value = get_style_property(node, "border-style");
+ value = value_from_property(match, "border-style");
if (value)
{
if (!strcmp(value->data, "none"))
@@ -966,38 +836,136 @@ compute_style(fz_context *ctx, fz_html_font_set *set, struct computed_style *sty
style->border_style = BS_SOLID;
}
- style->line_height = number_from_property(node, "line-height", 1.2, N_SCALE);
+ style->line_height = number_from_property(match, "line-height", 1.2, N_SCALE);
- style->text_indent = number_from_property(node, "text-indent", 0, N_NUMBER);
+ style->text_indent = number_from_property(match, "text-indent", 0, N_NUMBER);
- style->margin[0] = number_from_property(node, "margin-top", 0, N_NUMBER);
- style->margin[1] = number_from_property(node, "margin-right", 0, N_NUMBER);
- style->margin[2] = number_from_property(node, "margin-bottom", 0, N_NUMBER);
- style->margin[3] = number_from_property(node, "margin-left", 0, N_NUMBER);
+ style->margin[0] = number_from_property(match, "margin-top", 0, N_NUMBER);
+ style->margin[1] = number_from_property(match, "margin-right", 0, N_NUMBER);
+ style->margin[2] = number_from_property(match, "margin-bottom", 0, N_NUMBER);
+ style->margin[3] = number_from_property(match, "margin-left", 0, N_NUMBER);
- style->padding[0] = number_from_property(node, "padding-top", 0, N_NUMBER);
- style->padding[1] = number_from_property(node, "padding-right", 0, N_NUMBER);
- style->padding[2] = number_from_property(node, "padding-bottom", 0, N_NUMBER);
- style->padding[3] = number_from_property(node, "padding-left", 0, N_NUMBER);
+ style->padding[0] = number_from_property(match, "padding-top", 0, N_NUMBER);
+ style->padding[1] = number_from_property(match, "padding-right", 0, N_NUMBER);
+ style->padding[2] = number_from_property(match, "padding-bottom", 0, N_NUMBER);
+ style->padding[3] = number_from_property(match, "padding-left", 0, N_NUMBER);
- style->border_width[0] = border_width_from_property(node, "border-width-top");
- style->border_width[1] = border_width_from_property(node, "border-width-right");
- style->border_width[2] = border_width_from_property(node, "border-width-bottom");
- style->border_width[3] = border_width_from_property(node, "border-width-left");
+ style->border_width[0] = border_width_from_property(match, "border-width-top");
+ style->border_width[1] = border_width_from_property(match, "border-width-right");
+ style->border_width[2] = border_width_from_property(match, "border-width-bottom");
+ style->border_width[3] = border_width_from_property(match, "border-width-left");
- style->color = color_from_property(node, "color", black);
- style->background_color = color_from_property(node, "background-color", transparent);
- style->border_color = color_from_property(node, "border-color", style->color);
+ style->color = color_from_property(match, "color", black);
+ style->background_color = color_from_property(match, "background-color", transparent);
+ style->border_color = color_from_property(match, "border-color", style->color);
{
- const char *font_family = get_style_property_string(node, "font-family", "serif");
- const char *font_variant = get_style_property_string(node, "font-variant", "normal");
- const char *font_style = get_style_property_string(node, "font-style", "normal");
- const char *font_weight = get_style_property_string(node, "font-weight", "normal");
+ const char *font_family = string_from_property(match, "font-family", "serif");
+ const char *font_variant = string_from_property(match, "font-variant", "normal");
+ const char *font_style = string_from_property(match, "font-style", "normal");
+ const char *font_weight = string_from_property(match, "font-weight", "normal");
style->font = fz_load_html_font(ctx, set, font_family, font_variant, font_style, font_weight);
}
}
+/*
+ * Pretty printing
+ */
+
+void
+print_value(struct value *val)
+{
+ printf("%s", val->data);
+ if (val->args)
+ {
+ printf("(");
+ print_value(val->args);
+ printf(")");
+ }
+ if (val->next)
+ {
+ printf(" ");
+ print_value(val->next);
+ }
+}
+
+void
+print_property(struct property *prop)
+{
+ printf("\t%s: ", prop->name);
+ print_value(prop->value);
+ printf(" !%d;\n", prop->spec);
+}
+
+void
+print_condition(struct condition *cond)
+{
+ if (cond->type == '=')
+ printf("[%s=%s]", cond->key, cond->val);
+ else if (cond->type == '[')
+ printf("[%s]", cond->key);
+ else
+ printf("%c%s", cond->type, cond->val);
+ if (cond->next)
+ print_condition(cond->next);
+}
+
+void
+print_selector(struct selector *sel)
+{
+ if (sel->combine)
+ {
+putchar('(');
+ print_selector(sel->left);
+ if (sel->combine == ' ')
+ printf(" ");
+ else
+ printf(" %c ", sel->combine);
+ print_selector(sel->right);
+putchar(')');
+ }
+ else if (sel->name)
+ printf("%s", sel->name);
+ else
+ printf("*");
+ if (sel->cond)
+ {
+ print_condition(sel->cond);
+ }
+}
+
+void
+print_rule(fz_css_rule *rule)
+{
+ struct selector *sel;
+ struct property *prop;
+
+ for (sel = rule->selector; sel; sel = sel->next)
+ {
+ print_selector(sel);
+ printf(" !%d", selector_specificity(sel));
+ if (sel->next)
+ printf(", ");
+ }
+
+ printf("\n{\n");
+ for (prop = rule->declaration; prop; prop = prop->next)
+ {
+ print_property(prop);
+ }
+ printf("}\n");
+}
+
+void
+print_rules(fz_css_rule *rule)
+{
+ while (rule)
+ {
+ print_rule(rule);
+ rule = rule->next;
+ }
+}
+
void
print_style(struct computed_style *style)
{
diff --git a/source/html/css-parse.c b/source/html/css-parse.c
index 35d11a1d..fbae49bb 100644
--- a/source/html/css-parse.c
+++ b/source/html/css-parse.c
@@ -1,5 +1,61 @@
#include "mupdf/html.h"
+static fz_css_rule *
+fz_new_css_rule(fz_context *ctx, struct selector *selector, struct property *declaration)
+{
+ fz_css_rule *rule = fz_malloc_struct(ctx, fz_css_rule);
+ rule->selector = selector;
+ rule->declaration = declaration;
+ rule->next = NULL;
+ return rule;
+}
+
+static struct selector *
+fz_new_css_selector(fz_context *ctx, const char *name)
+{
+ struct selector *sel = fz_malloc_struct(ctx, struct selector);
+ sel->name = name ? fz_strdup(ctx, name) : NULL;
+ sel->combine = 0;
+ sel->cond = NULL;
+ sel->left = NULL;
+ sel->right = NULL;
+ sel->next = NULL;
+ return sel;
+}
+
+static struct condition *
+fz_new_css_condition(fz_context *ctx, int type, const char *key, const char *val)
+{
+ struct condition *cond = fz_malloc_struct(ctx, struct condition);
+ cond->type = type;
+ cond->key = key ? fz_strdup(ctx, key) : NULL;
+ cond->val = val ? fz_strdup(ctx, val) : NULL;
+ cond->next = NULL;
+ return cond;
+}
+
+static struct property *
+fz_new_css_property(fz_context *ctx, const char *name, struct value *value, int spec)
+{
+ struct property *prop = fz_malloc_struct(ctx, struct property);
+ prop->name = fz_strdup(ctx, name);
+ prop->value = value;
+ prop->spec = spec;
+ prop->next = NULL;
+ return prop;
+}
+
+static struct value *
+fz_new_css_value(fz_context *ctx, int type, const char *data)
+{
+ struct value *val = fz_malloc_struct(ctx, struct value);
+ val->type = type;
+ val->data = fz_strdup(ctx, data);
+ val->args = NULL;
+ val->next = NULL;
+ return val;
+}
+
struct lexbuf
{
fz_context *ctx;
@@ -648,7 +704,7 @@ static struct selector *parse_selector_list(struct lexbuf *buf)
return head;
}
-static struct rule *parse_rule(struct lexbuf *buf)
+static fz_css_rule *parse_rule(struct lexbuf *buf)
{
struct selector *s;
struct property *p;
@@ -662,7 +718,7 @@ static struct rule *parse_rule(struct lexbuf *buf)
static void parse_media_list(struct lexbuf *buf)
{
- struct rule *r;
+ fz_css_rule *r;
while (buf->lookahead != '}' && buf->lookahead != EOF)
{
@@ -699,9 +755,9 @@ static void parse_at_rule(struct lexbuf *buf)
}
}
-static struct rule *parse_stylesheet(struct lexbuf *buf, struct rule *chain)
+static fz_css_rule *parse_stylesheet(struct lexbuf *buf, fz_css_rule *chain)
{
- struct rule *rule, **nextp, *tail;
+ fz_css_rule *rule, **nextp, *tail;
tail = chain;
if (tail)
@@ -739,7 +795,7 @@ struct property *fz_parse_css_properties(fz_context *ctx, const char *source)
return parse_declaration_list(&buf);
}
-struct rule *fz_parse_css(fz_context *ctx, struct rule *chain, const char *source)
+fz_css_rule *fz_parse_css(fz_context *ctx, fz_css_rule *chain, const char *source)
{
struct lexbuf buf;
css_lex_init(ctx, &buf, source);
diff --git a/source/html/html-layout.c b/source/html/html-layout.c
index 59719de5..cf3c1249 100644
--- a/source/html/html-layout.c
+++ b/source/html/html-layout.c
@@ -148,7 +148,7 @@ static void init_box(fz_context *ctx, struct box *box, fz_xml *node)
box->flow_head = NULL;
box->flow_tail = &box->flow_head;
- default_computed_style(&box->style);
+ fz_default_css_style(ctx, &box->style);
}
static struct box *new_box(fz_context *ctx, fz_xml *node)
@@ -247,29 +247,29 @@ static void insert_inline_box(fz_context *ctx, struct box *box, struct box *top)
}
static void generate_boxes(fz_context *ctx, fz_html_font_set *set, fz_archive *zip, const char *base_uri,
- fz_xml *node, struct box *top, struct rule *rule, struct style *up_style)
+ fz_xml *node, struct box *top, fz_css_rule *rule, fz_css_match *up_match)
{
- struct style style;
+ fz_css_match match;
struct box *box;
const char *tag;
int display;
while (node)
{
- style.up = up_style;
- style.count = 0;
+ match.up = up_match;
+ match.count = 0;
tag = fz_xml_tag(node);
if (tag)
{
- apply_styles(ctx, &style, rule, node);
+ fz_match_css(ctx, &match, rule, node);
- display = fz_get_css_style_property_display(&style);
+ display = fz_get_css_match_display(&match);
if (!strcmp(tag, "br"))
{
box = new_box(ctx, node);
- compute_style(ctx, set, &box->style, &style);
+ fz_apply_css_style(ctx, set, &box->style, &match);
top = insert_break_box(ctx, box, top);
}
@@ -279,7 +279,7 @@ static void generate_boxes(fz_context *ctx, fz_html_font_set *set, fz_archive *z
if (src)
{
box = new_box(ctx, node);
- compute_style(ctx, set, &box->style, &style);
+ fz_apply_css_style(ctx, set, &box->style, &match);
insert_inline_box(ctx, box, top);
generate_image(ctx, zip, base_uri, box, src);
}
@@ -288,7 +288,7 @@ static void generate_boxes(fz_context *ctx, fz_html_font_set *set, fz_archive *z
else if (display != DIS_NONE)
{
box = new_box(ctx, node);
- compute_style(ctx, set, &box->style, &style);
+ fz_apply_css_style(ctx, set, &box->style, &match);
if (display == DIS_BLOCK)
{
@@ -309,7 +309,7 @@ static void generate_boxes(fz_context *ctx, fz_html_font_set *set, fz_archive *z
}
if (fz_xml_down(node))
- generate_boxes(ctx, set, zip, base_uri, fz_xml_down(node), box, rule, &style);
+ generate_boxes(ctx, set, zip, base_uri, fz_xml_down(node), box, rule, &match);
// TODO: remove empty flow boxes
}
@@ -848,7 +848,7 @@ static char *concat_text(fz_context *ctx, fz_xml *root)
return s;
}
-static struct rule *html_load_css(fz_context *ctx, fz_archive *zip, const char *base_uri, struct rule *css, fz_xml *root)
+static fz_css_rule *html_load_css(fz_context *ctx, fz_archive *zip, const char *base_uri, fz_css_rule *css, fz_xml *root)
{
fz_xml *node;
fz_buffer *buf;
@@ -913,9 +913,9 @@ struct box *
fz_generate_html(fz_context *ctx, fz_html_font_set *set, fz_archive *zip, const char *base_uri, fz_buffer *buf)
{
fz_xml *xml;
- struct rule *css;
+ fz_css_rule *css;
struct box *box;
- struct style style;
+ fz_css_match match;
printf("html: parsing XHTML.\n");
xml = fz_parse_xml(ctx, buf->data, buf->len, 1);
@@ -929,10 +929,10 @@ fz_generate_html(fz_context *ctx, fz_html_font_set *set, fz_archive *zip, const
printf("html: applying styles and generating boxes.\n");
box = new_box(ctx, NULL);
- style.up = NULL;
- style.count = 0;
+ match.up = NULL;
+ match.count = 0;
- generate_boxes(ctx, set, zip, base_uri, xml, box, css, &style);
+ generate_boxes(ctx, set, zip, base_uri, xml, box, css, &match);
return box;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-14 22:43:07 +0000