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gtk2/gtk/gtkcssprovider.c
Carlos Garnacho 875237187c GtkCssProvider: Add priv pointer to object struct.
2010-12-04 15:37:17 +01:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <gtk/gtk.h>
#include <gtkstyleprovider.h>
#include "gtkcssprovider.h"
#include "gtkalias.h"
typedef struct GtkCssProviderPrivate GtkCssProviderPrivate;
typedef struct SelectorElement SelectorElement;
typedef struct SelectorPath SelectorPath;
typedef struct SelectorStyleInfo SelectorStyleInfo;
typedef enum SelectorElementType SelectorElementType;
typedef enum CombinatorType CombinatorType;
typedef enum ParserScope ParserScope;
typedef enum ParserSymbol ParserSymbol;
enum SelectorElementType {
SELECTOR_TYPE_NAME,
SELECTOR_NAME,
SELECTOR_GTYPE,
SELECTOR_REGION,
SELECTOR_GLOB
};
enum CombinatorType {
COMBINATOR_DESCENDANT, /* No direct relation needed */
COMBINATOR_CHILD /* Direct child */
};
struct SelectorElement
{
SelectorElementType elem_type;
CombinatorType combinator;
union
{
GQuark name;
GType type;
struct
{
GQuark name;
GtkChildClassFlags flags;
} region;
};
};
struct SelectorPath
{
GSList *elements;
GtkStateType state;
guint ref_count;
};
struct SelectorStyleInfo
{
SelectorPath *path;
GHashTable *style;
};
struct GtkCssProviderPrivate
{
GScanner *scanner;
gchar *filename;
GHashTable *symbolic_colors;
GPtrArray *selectors_info;
/* Current parser state */
GSList *state;
GSList *cur_selectors;
GHashTable *cur_properties;
};
enum ParserScope {
SCOPE_SELECTOR,
SCOPE_PSEUDO_CLASS,
SCOPE_NTH_CHILD,
SCOPE_DECLARATION,
SCOPE_VALUE
};
/* Extend GtkStateType, since these
* values are also used as symbols
*/
enum ParserSymbol {
/* Scope: pseudo-class */
SYMBOL_NTH_CHILD = GTK_STATE_LAST,
SYMBOL_FIRST_CHILD,
SYMBOL_LAST_CHILD,
/* Scope: nth-child */
SYMBOL_NTH_CHILD_EVEN,
SYMBOL_NTH_CHILD_ODD,
SYMBOL_NTH_CHILD_FIRST,
SYMBOL_NTH_CHILD_LAST
};
static void gtk_css_provider_finalize (GObject *object);
static void gtk_css_style_provider_iface_init (GtkStyleProviderIface *iface);
static void css_provider_apply_scope (GtkCssProvider *css_provider,
ParserScope scope);
static gboolean css_provider_parse_value (const gchar *value_str,
GValue *value);
G_DEFINE_TYPE_EXTENDED (GtkCssProvider, gtk_css_provider, G_TYPE_OBJECT, 0,
G_IMPLEMENT_INTERFACE (GTK_TYPE_STYLE_PROVIDER,
gtk_css_style_provider_iface_init));
static void
gtk_css_provider_class_init (GtkCssProviderClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_css_provider_finalize;
g_type_class_add_private (object_class, sizeof (GtkCssProviderPrivate));
}
static SelectorPath *
selector_path_new (void)
{
SelectorPath *path;
path = g_slice_new0 (SelectorPath);
path->state = GTK_STATE_NORMAL;
path->ref_count = 1;
return path;
}
static SelectorPath *
selector_path_ref (SelectorPath *path)
{
path->ref_count++;
return path;
}
static void
selector_path_unref (SelectorPath *path)
{
path->ref_count--;
if (path->ref_count > 0)
return;
while (path->elements)
{
g_slice_free (SelectorElement, path->elements->data);
path->elements = g_slist_delete_link (path->elements, path->elements);
}
g_slice_free (SelectorPath, path);
}
static void
selector_path_prepend_type (SelectorPath *path,
const gchar *type_name)
{
SelectorElement *elem;
GType type;
elem = g_slice_new (SelectorElement);
elem->combinator = COMBINATOR_DESCENDANT;
type = g_type_from_name (type_name);
if (type == G_TYPE_INVALID)
{
elem->elem_type = SELECTOR_TYPE_NAME;
elem->name = g_quark_from_string (type_name);
}
else
{
elem->elem_type = SELECTOR_GTYPE;
elem->type = type;
}
path->elements = g_slist_prepend (path->elements, elem);
}
static void
selector_path_prepend_glob (SelectorPath *path)
{
SelectorElement *elem;
elem = g_slice_new (SelectorElement);
elem->elem_type = SELECTOR_GLOB;
elem->combinator = COMBINATOR_DESCENDANT;
path->elements = g_slist_prepend (path->elements, elem);
}
static void
selector_path_prepend_region (SelectorPath *path,
const gchar *name,
GtkChildClassFlags flags)
{
SelectorElement *elem;
elem = g_slice_new (SelectorElement);
elem->combinator = COMBINATOR_DESCENDANT;
elem->elem_type = SELECTOR_REGION;
elem->region.name = g_quark_from_string (name);
elem->region.flags = flags;
path->elements = g_slist_prepend (path->elements, elem);
}
static void
selector_path_prepend_combinator (SelectorPath *path,
CombinatorType combinator)
{
SelectorElement *elem;
g_assert (path->elements != NULL);
/* It is actually stored in the last element */
elem = path->elements->data;
elem->combinator = combinator;
}
static gint
selector_path_depth (SelectorPath *path)
{
return g_slist_length (path->elements);
}
static SelectorStyleInfo *
selector_style_info_new (SelectorPath *path)
{
SelectorStyleInfo *info;
info = g_slice_new0 (SelectorStyleInfo);
info->path = selector_path_ref (path);
return info;
}
static void
selector_style_info_free (SelectorStyleInfo *info)
{
if (info->style)
g_hash_table_unref (info->style);
if (info->path)
selector_path_unref (info->path);
}
static void
selector_style_info_set_style (SelectorStyleInfo *info,
GHashTable *style)
{
if (info->style)
g_hash_table_unref (info->style);
if (style)
info->style = g_hash_table_ref (style);
else
info->style = NULL;
}
static void
gtk_css_provider_init (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv;
GScanner *scanner;
priv = css_provider->priv = G_TYPE_INSTANCE_GET_PRIVATE (css_provider,
GTK_TYPE_CSS_PROVIDER,
GtkCssProviderPrivate);
priv->selectors_info = g_ptr_array_new_with_free_func ((GDestroyNotify) selector_style_info_free);
scanner = g_scanner_new (NULL);
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "active", GUINT_TO_POINTER (GTK_STATE_ACTIVE));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "prelight", GUINT_TO_POINTER (GTK_STATE_PRELIGHT));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "hover", GUINT_TO_POINTER (GTK_STATE_PRELIGHT));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "selected", GUINT_TO_POINTER (GTK_STATE_SELECTED));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "insensitive", GUINT_TO_POINTER (GTK_STATE_INSENSITIVE));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "nth-child", GUINT_TO_POINTER (SYMBOL_NTH_CHILD));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "first-child", GUINT_TO_POINTER (SYMBOL_FIRST_CHILD));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "last-child", GUINT_TO_POINTER (SYMBOL_LAST_CHILD));
g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "even", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_EVEN));
g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "odd", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_ODD));
g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "first", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_FIRST));
g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "last", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_LAST));
priv->scanner = scanner;
css_provider_apply_scope (css_provider, SCOPE_SELECTOR);
priv->symbolic_colors = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) gtk_symbolic_color_unref);
}
typedef struct ComparePathData ComparePathData;
struct ComparePathData
{
guint64 score;
SelectorPath *path;
GSList *iter;
};
static gboolean
compare_selector_element (GtkWidgetPath *path,
guint index,
SelectorElement *elem,
guint8 *score)
{
*score = 0;
if (elem->elem_type == SELECTOR_TYPE_NAME)
{
const gchar *type_name;
GType resolved_type;
/* Resolve the type name */
type_name = g_quark_to_string (elem->name);
resolved_type = g_type_from_name (type_name);
if (resolved_type == G_TYPE_INVALID)
{
/* Type couldn't be resolved, so the selector
* clearly doesn't affect the given widget path
*/
return FALSE;
}
elem->elem_type = SELECTOR_GTYPE;
elem->type = resolved_type;
}
if (elem->elem_type == SELECTOR_GTYPE)
{
GType type;
type = gtk_widget_path_get_element_type (path, index);
if (!g_type_is_a (type, elem->type))
return FALSE;
if (type == elem->type)
*score |= 0xF;
else
{
GType parent = type;
*score = 0xE;
while ((parent = g_type_parent (parent)) != G_TYPE_INVALID)
{
if (parent == elem->type)
break;
*score -= 1;
if (*score == 1)
{
g_warning ("Hierarchy is higher than expected.");
break;
}
}
}
return TRUE;
}
else if (elem->elem_type == SELECTOR_REGION)
{
const gchar *region_name;
GtkChildClassFlags flags;
/* FIXME: Need GQuark API here */
region_name = g_quark_to_string (elem->region.name);
if (!gtk_widget_path_iter_has_region (path, index, region_name, &flags))
return FALSE;
if (elem->region.flags != 0 &&
(flags & elem->region.flags) == 0)
return FALSE;
*score = 0xF;
return TRUE;
}
else if (elem->elem_type == SELECTOR_GLOB)
{
/* Treat as lowest matching type */
*score = 1;
return TRUE;
}
return FALSE;
}
static guint64
compare_selector (GtkWidgetPath *path,
SelectorPath *selector)
{
GSList *elements = selector->elements;
gboolean match = TRUE;
guint64 score = 0;
guint i = 0;
while (elements && match &&
i < gtk_widget_path_length (path))
{
SelectorElement *elem;
guint8 elem_score;
elem = elements->data;
match = compare_selector_element (path, i, elem, &elem_score);
i++;
if (!match && elem->combinator == COMBINATOR_DESCENDANT)
{
/* With descendant combinators there may
* be intermediate chidren in the hierarchy
*/
match = TRUE;
}
else
elements = elements->next;
if (match)
{
/* Only 4 bits are actually used */
score <<= 4;
score |= elem_score;
}
}
/* If there are pending selector
* elements to compare, it's not
* a match.
*/
if (elements)
match = FALSE;
if (!match)
score = 0;
return score;
}
typedef struct StylePriorityInfo StylePriorityInfo;
struct StylePriorityInfo
{
guint64 score;
GHashTable *style;
GtkStateType state;
};
static GArray *
css_provider_get_selectors (GtkCssProvider *css_provider,
GtkWidgetPath *path)
{
GtkCssProviderPrivate *priv;
GArray *priority_info;
guint i, j;
priv = css_provider->priv;
priority_info = g_array_new (FALSE, FALSE, sizeof (StylePriorityInfo));
for (i = 0; i < priv->selectors_info->len; i++)
{
SelectorStyleInfo *info;
StylePriorityInfo new;
gboolean added = FALSE;
guint64 score;
info = g_ptr_array_index (priv->selectors_info, i);
score = compare_selector (path, info->path);
if (score <= 0)
continue;
new.score = score;
new.style = info->style;
new.state = info->path->state;
for (j = 0; j < priority_info->len; j++)
{
StylePriorityInfo *cur;
cur = &g_array_index (priority_info, StylePriorityInfo, j);
if (cur->score > new.score)
{
g_array_insert_val (priority_info, j, new);
added = TRUE;
break;
}
}
if (!added)
g_array_append_val (priority_info, new);
}
return priority_info;
}
static void
css_provider_dump_symbolic_colors (GtkCssProvider *css_provider,
GtkStyleSet *set)
{
GtkCssProviderPrivate *priv;
GHashTableIter iter;
gpointer key, value;
priv = css_provider->priv;
g_hash_table_iter_init (&iter, priv->symbolic_colors);
while (g_hash_table_iter_next (&iter, &key, &value))
{
const gchar *name;
GtkSymbolicColor *color;
name = key;
color = value;
gtk_style_set_map_color (set, name, color);
}
}
static GtkStyleSet *
gtk_css_provider_get_style (GtkStyleProvider *provider,
GtkWidgetPath *path)
{
GtkCssProvider *css_provider;
GtkCssProviderPrivate *priv;
GtkStyleSet *set;
GArray *priority_info;
guint i;
css_provider = GTK_CSS_PROVIDER (provider);
priv = css_provider->priv;
set = gtk_style_set_new ();
css_provider_dump_symbolic_colors (css_provider, set);
priority_info = css_provider_get_selectors (css_provider, path);
for (i = 0; i < priority_info->len; i++)
{
StylePriorityInfo *info;
GHashTableIter iter;
gpointer key, value;
info = &g_array_index (priority_info, StylePriorityInfo, i);
g_hash_table_iter_init (&iter, info->style);
while (g_hash_table_iter_next (&iter, &key, &value))
{
gchar *prop = key;
if (prop[0] == '-')
continue;
if (info->state == GTK_STATE_NORMAL)
gtk_style_set_set_default (set, key, value);
else
gtk_style_set_set_property (set, key, info->state, value);
}
}
g_array_free (priority_info, TRUE);
return set;
}
static gboolean
gtk_css_provider_get_style_property (GtkStyleProvider *provider,
GtkWidgetPath *path,
const gchar *property_name,
GValue *value)
{
GArray *priority_info;
gboolean found = FALSE;
gchar *prop_name;
GType path_type;
gint i;
path_type = gtk_widget_path_get_widget_type (path);
prop_name = g_strdup_printf ("-%s-%s",
g_type_name (path_type),
property_name);
priority_info = css_provider_get_selectors (GTK_CSS_PROVIDER (provider), path);
for (i = priority_info->len - 1; i >= 0; i--)
{
StylePriorityInfo *info;
GValue *val;
info = &g_array_index (priority_info, StylePriorityInfo, i);
val = g_hash_table_lookup (info->style, prop_name);
if (val)
{
const gchar *val_str;
val_str = g_value_get_string (val);
found = TRUE;
css_provider_parse_value (val_str, value);
break;
}
}
g_array_free (priority_info, TRUE);
g_free (prop_name);
return found;
}
static void
gtk_css_style_provider_iface_init (GtkStyleProviderIface *iface)
{
iface->get_style = gtk_css_provider_get_style;
iface->get_style_property = gtk_css_provider_get_style_property;
}
static void
gtk_css_provider_finalize (GObject *object)
{
GtkCssProvider *css_provider;
GtkCssProviderPrivate *priv;
css_provider = GTK_CSS_PROVIDER (object);
priv = css_provider->priv;
g_scanner_destroy (priv->scanner);
g_free (priv->filename);
g_ptr_array_free (priv->selectors_info, TRUE);
g_slist_foreach (priv->cur_selectors, (GFunc) selector_path_unref, NULL);
g_slist_free (priv->cur_selectors);
g_hash_table_unref (priv->cur_properties);
g_hash_table_destroy (priv->symbolic_colors);
G_OBJECT_CLASS (gtk_css_provider_parent_class)->finalize (object);
}
GtkCssProvider *
gtk_css_provider_new (void)
{
return g_object_new (GTK_TYPE_CSS_PROVIDER, NULL);
}
static void
property_value_free (GValue *value)
{
if (G_IS_VALUE (value))
g_value_unset (value);
g_slice_free (GValue, value);
}
static void
css_provider_apply_scope (GtkCssProvider *css_provider,
ParserScope scope)
{
GtkCssProviderPrivate *priv;
priv = css_provider->priv;
g_scanner_set_scope (priv->scanner, scope);
if (scope == SCOPE_VALUE)
{
priv->scanner->config->cset_identifier_first = G_CSET_a_2_z "@#-_0123456789" G_CSET_A_2_Z;
priv->scanner->config->cset_identifier_nth = G_CSET_a_2_z "@#-_ 0123456789(),." G_CSET_A_2_Z;
priv->scanner->config->scan_identifier_1char = TRUE;
}
else if (scope == SCOPE_SELECTOR)
{
priv->scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "*@";
priv->scanner->config->cset_identifier_nth = G_CSET_a_2_z "-" G_CSET_A_2_Z;
priv->scanner->config->scan_identifier_1char = TRUE;
}
else if (scope == SCOPE_PSEUDO_CLASS ||
scope == SCOPE_NTH_CHILD ||
scope == SCOPE_DECLARATION)
{
priv->scanner->config->cset_identifier_first = G_CSET_a_2_z "-" G_CSET_A_2_Z;
priv->scanner->config->cset_identifier_nth = G_CSET_a_2_z "-" G_CSET_A_2_Z;
priv->scanner->config->scan_identifier_1char = FALSE;
}
else
g_assert_not_reached ();
priv->scanner->config->scan_float = FALSE;
}
static void
css_provider_push_scope (GtkCssProvider *css_provider,
ParserScope scope)
{
GtkCssProviderPrivate *priv;
priv = css_provider->priv;
priv->state = g_slist_prepend (priv->state, GUINT_TO_POINTER (scope));
css_provider_apply_scope (css_provider, scope);
}
static ParserScope
css_provider_pop_scope (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv;
ParserScope scope = SCOPE_SELECTOR;
priv = css_provider->priv;
if (!priv->state)
{
g_warning ("Push/pop calls to parser scope aren't paired");
css_provider_apply_scope (css_provider, SCOPE_SELECTOR);
return SCOPE_SELECTOR;
}
priv->state = g_slist_delete_link (priv->state, priv->state);
/* Fetch new scope */
if (priv->state)
scope = GPOINTER_TO_INT (priv->state->data);
css_provider_apply_scope (css_provider, scope);
return scope;
}
static void
css_provider_reset_parser (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv;
priv = css_provider->priv;
g_slist_free (priv->state);
priv->state = NULL;
css_provider_apply_scope (css_provider, SCOPE_SELECTOR);
g_slist_foreach (priv->cur_selectors, (GFunc) selector_path_unref, NULL);
g_slist_free (priv->cur_selectors);
priv->cur_selectors = NULL;
if (priv->cur_properties)
g_hash_table_unref (priv->cur_properties);
priv->cur_properties = g_hash_table_new_full (g_str_hash,
g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) property_value_free);
}
static void
css_provider_commit (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv;
GSList *l;
priv = css_provider->priv;
l = priv->cur_selectors;
while (l)
{
SelectorPath *path = l->data;
SelectorStyleInfo *info;
info = selector_style_info_new (path);
selector_style_info_set_style (info, priv->cur_properties);
g_ptr_array_add (priv->selectors_info, info);
l = l->next;
}
}
static GTokenType
parse_pseudo_class (GtkCssProvider *css_provider,
GScanner *scanner,
SelectorPath *selector,
GtkChildClassFlags *flags)
{
ParserSymbol symbol;
css_provider_push_scope (css_provider, SCOPE_PSEUDO_CLASS);
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_SYMBOL)
return G_TOKEN_SYMBOL;
symbol = GPOINTER_TO_INT (scanner->value.v_symbol);
if (symbol == SYMBOL_NTH_CHILD)
{
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_LEFT_PAREN)
return G_TOKEN_LEFT_PAREN;
css_provider_push_scope (css_provider, SCOPE_NTH_CHILD);
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_SYMBOL)
return G_TOKEN_SYMBOL;
symbol = GPOINTER_TO_INT (scanner->value.v_symbol);
switch (symbol)
{
case SYMBOL_NTH_CHILD_EVEN:
*flags = GTK_CHILD_CLASS_EVEN;
break;
case SYMBOL_NTH_CHILD_ODD:
*flags = GTK_CHILD_CLASS_ODD;
break;
case SYMBOL_NTH_CHILD_FIRST:
*flags = GTK_CHILD_CLASS_FIRST;
break;
case SYMBOL_NTH_CHILD_LAST:
*flags = GTK_CHILD_CLASS_LAST;
break;
default:
break;
}
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_RIGHT_PAREN)
return G_TOKEN_RIGHT_PAREN;
css_provider_pop_scope (css_provider);
}
else if (symbol == SYMBOL_FIRST_CHILD)
*flags = GTK_CHILD_CLASS_FIRST;
else if (symbol == SYMBOL_LAST_CHILD)
*flags = GTK_CHILD_CLASS_LAST;
else
{
GtkStateType state;
state = GPOINTER_TO_INT (scanner->value.v_symbol);
selector->state = state;
}
css_provider_pop_scope (css_provider);
return G_TOKEN_NONE;
}
static GTokenType
parse_selector (GtkCssProvider *css_provider,
GScanner *scanner,
SelectorPath **selector_out)
{
SelectorPath *path;
path = selector_path_new ();
*selector_out = path;
if (scanner->token != ':' &&
scanner->token != G_TOKEN_IDENTIFIER)
return G_TOKEN_IDENTIFIER;
while (scanner->token == G_TOKEN_IDENTIFIER)
{
if (g_ascii_isupper (scanner->value.v_identifier[0]))
selector_path_prepend_type (path, scanner->value.v_identifier);
else if (g_ascii_islower (scanner->value.v_identifier[0]))
{
GtkChildClassFlags flags = 0;
gchar *region_name;
region_name = g_strdup (scanner->value.v_identifier);
/* Parse nth-child type pseudo-class, and
* possibly a state pseudo-class after it.
*/
while (path->state == GTK_STATE_NORMAL &&
g_scanner_peek_next_token (scanner) == ':')
{
GTokenType token;
g_scanner_get_next_token (scanner);
if ((token = parse_pseudo_class (css_provider, scanner, path, &flags)) != G_TOKEN_NONE)
return token;
}
selector_path_prepend_region (path, region_name, flags);
g_free (region_name);
}
else if (scanner->value.v_identifier[0] == '*')
selector_path_prepend_glob (path);
else
return G_TOKEN_IDENTIFIER;
g_scanner_get_next_token (scanner);
/* State is the last element in the selector */
if (path->state != GTK_STATE_NORMAL)
break;
if (scanner->token == '>')
{
selector_path_prepend_combinator (path, COMBINATOR_CHILD);
g_scanner_get_next_token (scanner);
}
}
if (scanner->token == ':' &&
path->state == GTK_STATE_NORMAL)
{
GtkChildClassFlags flags = 0;
GTokenType token;
/* Add glob selector if path is empty */
if (selector_path_depth (path) == 0)
selector_path_prepend_glob (path);
if ((token = parse_pseudo_class (css_provider, scanner, path, &flags)) != G_TOKEN_NONE)
return token;
if (flags != 0)
{
/* This means either a standalone :nth-child
* selector, or on a invalid element type.
*/
return G_TOKEN_SYMBOL;
}
g_scanner_get_next_token (scanner);
}
else if (scanner->token == G_TOKEN_SYMBOL)
{
/* A new pseudo-class was starting, but the state was already
* parsed, so nothing is supposed to go after that.
*/
return G_TOKEN_LEFT_CURLY;
}
return G_TOKEN_NONE;
}
#define SKIP_SPACES(s) while (s[0] == ' ') s++;
static GtkSymbolicColor *
symbolic_color_parse_str (const gchar *string,
gchar **end_ptr)
{
GtkSymbolicColor *symbolic_color = NULL;
gchar *str;
str = (gchar *) string;
if (str[0] == '#')
{
GdkColor color;
gchar *color_str;
const gchar *end;
end = str + 1;
while (g_ascii_isxdigit (*end))
end++;
color_str = g_strndup (str, end - str);
*end_ptr = (gchar *) end;
if (!gdk_color_parse (color_str, &color))
{
g_free (color_str);
return NULL;
}
symbolic_color = gtk_symbolic_color_new_literal (&color);
g_free (color_str);
}
else if (str[0] == '@')
{
const gchar *end;
gchar *name;
str++;
end = str;
while (*end == '-' || *end == '_' ||
g_ascii_isalpha (*end))
end++;
name = g_strndup (str, end - str);
symbolic_color = gtk_symbolic_color_new_name (name);
g_free (name);
*end_ptr = (gchar *) end;
}
else if (g_str_has_prefix (str, "shade"))
{
GtkSymbolicColor *param_color;
gdouble factor;
str += strlen ("shade");
SKIP_SPACES (str);
if (*str != '(')
{
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
param_color = symbolic_color_parse_str (str, end_ptr);
if (!param_color)
return NULL;
str = *end_ptr;
SKIP_SPACES (str);
if (str[0] != ',')
{
gtk_symbolic_color_unref (param_color);
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
factor = g_ascii_strtod (str, end_ptr);
str = *end_ptr;
SKIP_SPACES (str);
*end_ptr = (gchar *) str;
if (str[0] != ')')
{
gtk_symbolic_color_unref (param_color);
return NULL;
}
symbolic_color = gtk_symbolic_color_new_shade (param_color, factor);
(*end_ptr)++;
}
else if (g_str_has_prefix (str, "mix"))
{
GtkSymbolicColor *color1, *color2;
gdouble factor;
str += strlen ("mix");
SKIP_SPACES (str);
if (*str != '(')
{
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
color1 = symbolic_color_parse_str (str, end_ptr);
if (!color1)
return NULL;
str = *end_ptr;
SKIP_SPACES (str);
if (str[0] != ',')
{
gtk_symbolic_color_unref (color1);
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
color2 = symbolic_color_parse_str (str, end_ptr);
if (!color2 || *end_ptr[0] != ',')
{
gtk_symbolic_color_unref (color1);
return NULL;
}
str = *end_ptr;
SKIP_SPACES (str);
if (str[0] != ',')
{
gtk_symbolic_color_unref (color1);
gtk_symbolic_color_unref (color2);
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
factor = g_ascii_strtod (str, end_ptr);
str = *end_ptr;
SKIP_SPACES (str);
*end_ptr = (gchar *) str;
if (str[0] != ')')
{
gtk_symbolic_color_unref (color1);
gtk_symbolic_color_unref (color2);
return NULL;
}
symbolic_color = gtk_symbolic_color_new_mix (color1, color2, factor);
(*end_ptr)++;
}
return symbolic_color;
}
#undef SKIP_SPACES
static GtkSymbolicColor *
symbolic_color_parse (const gchar *str)
{
GtkSymbolicColor *color;
gchar *end;
color = symbolic_color_parse_str (str, &end);
if (*end != '\0')
{
g_warning ("Error parsing symbolic color \"%s\", stopped at char %ld : '%c'",
str, end - str, *end);
if (color)
{
gtk_symbolic_color_unref (color);
color = NULL;
}
}
return color;
}
static gboolean
css_provider_parse_value (const gchar *value_str,
GValue *value)
{
GType type;
gboolean parsed = TRUE;
type = G_VALUE_TYPE (value);
if (type == GDK_TYPE_COLOR)
{
GdkColor color;
if (gdk_color_parse (value_str, &color) == TRUE)
g_value_set_boxed (value, &color);
else
{
GtkSymbolicColor *symbolic_color;
symbolic_color = symbolic_color_parse (value_str);
if (!symbolic_color)
return FALSE;
g_value_unset (value);
g_value_init (value, GTK_TYPE_SYMBOLIC_COLOR);
g_value_take_boxed (value, symbolic_color);
}
}
else if (type == PANGO_TYPE_FONT_DESCRIPTION)
{
PangoFontDescription *font_desc;
font_desc = pango_font_description_from_string (value_str);
g_value_take_boxed (value, font_desc);
}
else if (type == G_TYPE_BOOLEAN)
{
if (value_str[0] == '1' ||
g_ascii_strcasecmp (value_str, "true") == 0)
g_value_set_boolean (value, TRUE);
else
g_value_set_boolean (value, FALSE);
}
else if (type == G_TYPE_INT)
g_value_set_int (value, atoi (value_str));
else if (type == G_TYPE_DOUBLE)
g_value_set_double (value, g_ascii_strtod (value_str, NULL));
else if (type == GTK_TYPE_THEMING_ENGINE)
{
GtkThemingEngine *engine;
engine = gtk_theming_engine_load (value_str);
g_value_set_object (value, engine);
}
else
{
g_warning ("Cannot parse string '%s' for type %s", value_str, g_type_name (type));
parsed = FALSE;
}
return parsed;
}
static GTokenType
parse_rule (GtkCssProvider *css_provider,
GScanner *scanner)
{
GtkCssProviderPrivate *priv;
GTokenType expected_token;
SelectorPath *selector;
priv = css_provider->priv;
css_provider_push_scope (css_provider, SCOPE_SELECTOR);
if (scanner->token == G_TOKEN_IDENTIFIER &&
scanner->value.v_identifier[0] == '@')
{
GtkSymbolicColor *color;
gchar *color_name;
/* Rule is a color mapping */
color_name = g_strdup (&scanner->value.v_identifier[1]);
g_scanner_get_next_token (scanner);
if (scanner->token != ':')
return ':';
css_provider_push_scope (css_provider, SCOPE_VALUE);
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_IDENTIFIER)
return G_TOKEN_IDENTIFIER;
color = symbolic_color_parse (scanner->value.v_identifier);
if (!color)
return G_TOKEN_IDENTIFIER;
g_hash_table_insert (priv->symbolic_colors, color_name, color);
css_provider_pop_scope (css_provider);
g_scanner_get_next_token (scanner);
if (scanner->token != ';')
return ';';
return G_TOKEN_NONE;
}
expected_token = parse_selector (css_provider, scanner, &selector);
if (expected_token != G_TOKEN_NONE)
{
selector_path_unref (selector);
return expected_token;
}
priv->cur_selectors = g_slist_prepend (priv->cur_selectors, selector);
while (scanner->token == ',')
{
g_scanner_get_next_token (scanner);
expected_token = parse_selector (css_provider, scanner, &selector);
if (expected_token != G_TOKEN_NONE)
{
selector_path_unref (selector);
return expected_token;
}
priv->cur_selectors = g_slist_prepend (priv->cur_selectors, selector);
}
css_provider_pop_scope (css_provider);
if (scanner->token != G_TOKEN_LEFT_CURLY)
return G_TOKEN_LEFT_CURLY;
/* Declarations parsing */
css_provider_push_scope (css_provider, SCOPE_DECLARATION);
g_scanner_get_next_token (scanner);
while (scanner->token == G_TOKEN_IDENTIFIER)
{
const gchar *value_str = NULL;
GType prop_type;
gchar *prop;
prop = g_strdup (scanner->value.v_identifier);
g_scanner_get_next_token (scanner);
if (scanner->token != ':')
{
g_free (prop);
return ':';
}
css_provider_push_scope (css_provider, SCOPE_VALUE);
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_IDENTIFIER)
{
g_free (prop);
return G_TOKEN_IDENTIFIER;
}
value_str = g_strstrip (scanner->value.v_identifier);
if (prop[0] == '-' &&
g_ascii_isupper (prop[1]))
{
GValue *val;
val = g_slice_new0 (GValue);
g_value_init (val, G_TYPE_STRING);
g_value_set_string (val, value_str);
g_hash_table_insert (priv->cur_properties, prop, val);
}
else if (gtk_style_set_lookup_property (prop, &prop_type))
{
GValue *val;
val = g_slice_new0 (GValue);
g_value_init (val, prop_type);
if (css_provider_parse_value (value_str, val))
g_hash_table_insert (priv->cur_properties, prop, val);
else
{
g_value_unset (val);
g_slice_free (GValue, val);
g_free (prop);
return G_TOKEN_IDENTIFIER;
}
}
else
g_free (prop);
css_provider_pop_scope (css_provider);
g_scanner_get_next_token (scanner);
if (scanner->token != ';')
return ';';
g_scanner_get_next_token (scanner);
}
if (scanner->token != G_TOKEN_RIGHT_CURLY)
return G_TOKEN_RIGHT_CURLY;
css_provider_pop_scope (css_provider);
return G_TOKEN_NONE;
}
static gboolean
parse_stylesheet (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv;
priv = css_provider->priv;
g_scanner_get_next_token (priv->scanner);
while (!g_scanner_eof (priv->scanner))
{
GTokenType expected_token;
css_provider_reset_parser (css_provider);
expected_token = parse_rule (css_provider, priv->scanner);
if (expected_token != G_TOKEN_NONE)
{
g_scanner_unexp_token (priv->scanner, expected_token,
NULL, NULL, NULL,
"Error parsing style resource", FALSE);
while (!g_scanner_eof (priv->scanner) &&
priv->scanner->token != G_TOKEN_RIGHT_CURLY)
g_scanner_get_next_token (priv->scanner);
}
else
css_provider_commit (css_provider);
g_scanner_get_next_token (priv->scanner);
}
return TRUE;
}
gboolean
gtk_css_provider_load_from_data (GtkCssProvider *css_provider,
const gchar *data,
gssize length,
GError *error)
{
GtkCssProviderPrivate *priv;
g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE);
g_return_val_if_fail (data != NULL, FALSE);
priv = css_provider->priv;
if (length < 0)
length = strlen (data);
if (priv->selectors_info->len > 0)
g_ptr_array_remove_range (priv->selectors_info, 0, priv->selectors_info->len);
css_provider_reset_parser (css_provider);
priv->scanner->input_name = "-";
g_scanner_input_text (priv->scanner, data, (guint) length);
parse_stylesheet (css_provider);
return TRUE;
}
gboolean
gtk_css_provider_load_from_file (GtkCssProvider *css_provider,
GFile *file,
GError **error)
{
GtkCssProviderPrivate *priv;
GError *internal_error = NULL;
gchar *data;
gsize length;
g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE);
g_return_val_if_fail (G_IS_FILE (file), FALSE);
priv = css_provider->priv;
if (!g_file_load_contents (file, NULL,
&data, &length,
NULL, &internal_error))
{
g_propagate_error (error, internal_error);
return FALSE;
}
if (priv->selectors_info->len > 0)
g_ptr_array_remove_range (priv->selectors_info, 0, priv->selectors_info->len);
g_free (priv->filename);
priv->filename = g_file_get_path (file);
css_provider_reset_parser (css_provider);
priv->scanner->input_name = priv->filename;
g_scanner_input_text (priv->scanner, data, (guint) length);
parse_stylesheet (css_provider);
g_free (data);
return TRUE;
}
#define __GTK_CSS_PROVIDER_C__
#include "gtkaliasdef.c"
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