[gtk+/gtk-style-context: 61/191] Added GtkCssProvider.
- From: Carlos Garnacho <carlosg src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk+/gtk-style-context: 61/191] Added GtkCssProvider.
- Date: Tue, 17 Aug 2010 13:53:19 +0000 (UTC)
commit 2e52153817647da7e629c28f33ff352515729863
Author: Carlos Garnacho <carlosg gnome org>
Date: Sun Apr 11 23:03:25 2010 +0200
Added GtkCssProvider.
GtkCssProvider is a GtkStyleProvider implementation which is able to read
CSS-like input to style widgets.
At the moment, only the basic parser features are available.
gtk/Makefile.am | 2 +
gtk/gtk.h | 1 +
gtk/gtkcssprovider.c | 835 ++++++++++++++++++++++++++++++++++++++++++++++++++
gtk/gtkcssprovider.h | 61 ++++
4 files changed, 899 insertions(+), 0 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index b8284bd..ec8873f 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -201,6 +201,7 @@ gtk_public_h_sources = \
gtkcombobox.h \
gtkcomboboxentry.h \
gtkcontainer.h \
+ gtkcssprovider.h \
gtkdebug.h \
gtkdialog.h \
gtkdnd.h \
@@ -464,6 +465,7 @@ gtk_base_c_sources = \
gtkcombobox.c \
gtkcomboboxentry.c \
gtkcontainer.c \
+ gtkcssprovider.c \
gtkdialog.c \
gtkdrawingarea.c \
gtkeditable.c \
diff --git a/gtk/gtk.h b/gtk/gtk.h
index 77f040c..c582ea6 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -72,6 +72,7 @@
#include <gtk/gtkcombobox.h>
#include <gtk/gtkcomboboxentry.h>
#include <gtk/gtkcontainer.h>
+#include <gtk/gtkcssprovider.h>
#include <gtk/gtkdebug.h>
#include <gtk/gtkdialog.h>
#include <gtk/gtkdnd.h>
diff --git a/gtk/gtkcssprovider.c b/gtk/gtkcssprovider.c
new file mode 100644
index 0000000..eb10b2e
--- /dev/null
+++ b/gtk/gtkcssprovider.c
@@ -0,0 +1,835 @@
+/* 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 ParserScope ParserScope;
+
+enum SelectorElementType {
+ SELECTOR_TYPE_NAME,
+ SELECTOR_NAME,
+ SELECTOR_GTYPE
+};
+
+struct SelectorElement
+{
+ SelectorElementType elem_type;
+ GtkStateType state;
+
+ union
+ {
+ GQuark name;
+ GType type;
+ };
+};
+
+struct SelectorPath
+{
+ GSList *elements;
+ guint ref_count;
+};
+
+struct SelectorStyleInfo
+{
+ SelectorPath *path;
+ GHashTable *style;
+};
+
+struct GtkCssProviderPrivate
+{
+ GScanner *scanner;
+ GPtrArray *selectors_info;
+
+ /* Current parser state */
+ GSList *state;
+ GSList *cur_selectors;
+ GHashTable *cur_properties;
+};
+
+enum ParserScope {
+ SCOPE_SELECTOR,
+ SCOPE_DECLARATION,
+ SCOPE_VALUE
+};
+
+#define GTK_CSS_PROVIDER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_CSS_PROVIDER, GtkCssProviderPrivate))
+
+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);
+
+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->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 (SelectorPath, 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);
+ 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 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 = GTK_CSS_PROVIDER_GET_PRIVATE (css_provider);
+ priv->selectors_info = g_ptr_array_new_with_free_func ((GDestroyNotify) selector_style_info_free);
+
+ scanner = g_scanner_new (NULL);
+ /* scanner->input_name = path; */
+
+ priv->scanner = scanner;
+ css_provider_apply_scope (css_provider, SCOPE_SELECTOR);
+}
+
+typedef struct ComparePathData ComparePathData;
+
+struct ComparePathData
+{
+ guint64 score;
+ SelectorPath *path;
+ GSList *iter;
+};
+
+static gboolean
+compare_path_foreach (GType type,
+ const gchar *name,
+ gpointer user_data)
+{
+ ComparePathData *data;
+ SelectorElement *elem;
+
+ data = user_data;
+ elem = data->iter->data;
+
+ 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
+ */
+ data->score = 0;
+ return TRUE;
+ }
+
+ elem->elem_type = SELECTOR_GTYPE;
+ elem->type = resolved_type;
+ }
+
+ if (elem->elem_type == SELECTOR_GTYPE)
+ {
+ if (!g_type_is_a (type, elem->type))
+ {
+ /* Selector definitely doesn't match */
+ data->score = 0;
+ return TRUE;
+ }
+ else if (type == elem->type)
+ data->score |= 0xF;
+ else
+ {
+ GType parent = type;
+ guint8 score = 0xE;
+
+ while ((parent = g_type_parent (parent)) != G_TYPE_INVALID)
+ {
+ if (parent == elem->type)
+ break;
+
+ score--;
+
+ if (score == 1)
+ {
+ g_warning ("Hierarchy is higher than expected.");
+ break;
+ }
+ }
+
+ data->score |= score;
+ }
+ }
+
+ data->iter = data->iter->next;
+
+ if (data->iter)
+ {
+ data->score <<= 4;
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static guint64
+compare_selector (GtkWidgetPath *path,
+ SelectorPath *selector)
+{
+ ComparePathData data;
+
+ data.score = 0;
+ data.path = selector;
+ data.iter = selector->elements;
+
+ gtk_widget_path_foreach (path,
+ compare_path_foreach,
+ &data);
+
+ if (data.iter)
+ {
+ /* There is remaining data to compare,
+ * so don't take it as a match.
+ */
+ data.score = 0;
+ }
+
+ return data.score;
+}
+
+typedef struct StylePriorityInfo StylePriorityInfo;
+
+struct StylePriorityInfo
+{
+ guint64 score;
+ GHashTable *style;
+};
+
+static GtkStyleSet *
+gtk_style_get_style (GtkStyleProvider *provider,
+ GtkWidgetPath *path)
+{
+ GtkCssProviderPrivate *priv;
+ GtkStyleSet *set;
+ GArray *priority_info;
+ guint i, j;
+
+ priv = GTK_CSS_PROVIDER_GET_PRIVATE (provider);
+ set = gtk_style_set_new ();
+ 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;
+
+ 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);
+ }
+
+ 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))
+ gtk_style_set_set_property (set, key, GTK_STATE_NORMAL, value);
+ }
+
+ g_array_free (priority_info, TRUE);
+
+ return set;
+}
+
+static void
+gtk_css_style_provider_iface_init (GtkStyleProviderIface *iface)
+{
+ iface->get_style = gtk_style_get_style;
+}
+
+static void
+gtk_css_provider_finalize (GObject *object)
+{
+ GtkCssProviderPrivate *priv;
+
+ priv = GTK_CSS_PROVIDER_GET_PRIVATE (object);
+ g_scanner_destroy (priv->scanner);
+
+ 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_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 = GTK_CSS_PROVIDER_GET_PRIVATE (css_provider);
+
+ 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;
+ }
+ else
+ {
+ 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_float = FALSE;
+}
+
+static void
+css_provider_push_scope (GtkCssProvider *css_provider,
+ ParserScope scope)
+{
+ GtkCssProviderPrivate *priv;
+
+ priv = GTK_CSS_PROVIDER_GET_PRIVATE (css_provider);
+ 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 = GTK_CSS_PROVIDER_GET_PRIVATE (css_provider);
+
+ 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 = GTK_CSS_PROVIDER_GET_PRIVATE (css_provider);
+
+ 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 = GTK_CSS_PROVIDER_GET_PRIVATE (css_provider);
+ 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_selector (GScanner *scanner,
+ SelectorPath **selector_out)
+{
+ SelectorPath *path;
+
+ *selector_out = NULL;
+
+ if (scanner->token != G_TOKEN_IDENTIFIER)
+ return G_TOKEN_IDENTIFIER;
+
+ path = selector_path_new ();
+
+ if (g_ascii_isupper (scanner->value.v_identifier[0]))
+ {
+ while (scanner->token == G_TOKEN_IDENTIFIER &&
+ g_ascii_isupper (scanner->value.v_identifier[0]))
+ {
+ selector_path_prepend_type (path, scanner->value.v_identifier);
+ g_scanner_get_next_token (scanner);
+ }
+
+ if (scanner->token == '.')
+ {
+ /* style class scanning */
+ g_scanner_get_next_token (scanner);
+
+ if (scanner->token != G_TOKEN_IDENTIFIER)
+ {
+ selector_path_unref (path);
+ return G_TOKEN_IDENTIFIER;
+ }
+
+ g_print ("Style class: %s\n", scanner->value.v_identifier);
+ g_scanner_get_next_token (scanner);
+ }
+ }
+ else
+ {
+ selector_path_unref (path);
+ return G_TOKEN_IDENTIFIER;
+ }
+
+ *selector_out = path;
+
+ return G_TOKEN_NONE;
+}
+
+static gboolean
+parse_value (GType type,
+ const gchar *value_str,
+ GValue *value)
+{
+ g_value_init (value, type);
+
+ if (type == GDK_TYPE_COLOR)
+ {
+ GdkColor color;
+
+ if (gdk_color_parse (value_str, &color) == FALSE)
+ return FALSE;
+
+ g_value_set_boxed (value, &color);
+ return TRUE;
+ }
+ 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);
+
+ return TRUE;
+ }
+ else if (type == G_TYPE_INT)
+ {
+ g_value_set_int (value, atoi (value_str));
+ return TRUE;
+ }
+ else if (type == G_TYPE_DOUBLE)
+ {
+ g_value_set_double (value, g_ascii_strtod (value_str, NULL));
+ return TRUE;
+ }
+ else
+ {
+ g_warning ("Cannot parse string '%s' for type %s", value_str, g_type_name (type));
+ }
+
+ return FALSE;
+}
+
+static GTokenType
+parse_rule (GtkCssProvider *css_provider,
+ GScanner *scanner)
+{
+ GtkCssProviderPrivate *priv;
+ GTokenType expected_token;
+ SelectorPath *selector;
+
+ priv = GTK_CSS_PROVIDER_GET_PRIVATE (css_provider);
+
+ css_provider_push_scope (css_provider, SCOPE_SELECTOR);
+ expected_token = parse_selector (scanner, &selector);
+
+ if (expected_token != G_TOKEN_NONE)
+ 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 (scanner, &selector);
+
+ if (expected_token != G_TOKEN_NONE)
+ 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;
+ GValue value = { 0 };
+ 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 (gtk_style_set_lookup_property (prop, &prop_type, NULL) &&
+ parse_value (prop_type, value_str, &value))
+ {
+ GValue *val;
+
+ val = g_slice_new0 (GValue);
+ g_value_init (val, prop_type);
+ g_value_copy (&value, val);
+
+ g_hash_table_insert (priv->cur_properties, prop, val);
+ }
+ 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 = GTK_CSS_PROVIDER_GET_PRIVATE (css_provider);
+ 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 = GTK_CSS_PROVIDER_GET_PRIVATE (css_provider);
+
+ 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);
+ 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 = GTK_CSS_PROVIDER_GET_PRIVATE (css_provider);
+
+ 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);
+
+ css_provider_reset_parser (css_provider);
+ 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"
diff --git a/gtk/gtkcssprovider.h b/gtk/gtkcssprovider.h
new file mode 100644
index 0000000..bf3d94a
--- /dev/null
+++ b/gtk/gtkcssprovider.h
@@ -0,0 +1,61 @@
+/* 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.
+ */
+
+#ifndef __GTK_CSS_PROVIDER_H__
+#define __GTK_CSS_PROVIDER_H__
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_CSS_PROVIDER (gtk_css_provider_get_type ())
+#define GTK_CSS_PROVIDER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_CSS_PROVIDER, GtkCssProvider))
+#define GTK_CSS_PROVIDER_CLASS(c) (G_TYPE_CHECK_CLASS_CAST ((c), GTK_TYPE_CSS_PROVIDER, GtkCssProviderClass))
+#define GTK_IS_CSS_PROVIDER(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_CSS_PROVIDER))
+#define GTK_IS_CSS_PROVIDER_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE ((c), GTK_TYPE_CSS_PROVIDER))
+#define GTK_CSS_PROVIDER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GTK_TYPE_CSS_PROVIDER, GtkCssProviderClass))
+
+typedef struct GtkCssProvider GtkCssProvider;
+typedef struct GtkCssProviderClass GtkCssProviderClass;
+
+struct GtkCssProvider
+{
+ GObject parent_instance;
+};
+
+struct GtkCssProviderClass
+{
+ GObjectClass parent_class;
+};
+
+GType gtk_css_provider_get_type (void) G_GNUC_CONST;
+
+GtkCssProvider * gtk_css_provider_new (void);
+
+gboolean gtk_css_provider_load_from_data (GtkCssProvider *css_provider,
+ const gchar *data,
+ gssize length,
+ GError *error);
+gboolean gtk_css_provider_load_from_file (GtkCssProvider *css_provider,
+ GFile *file,
+ GError **error);
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_PROVIDER_H__ */
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