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Add GtkStyleContext.

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GtkStyleContext will conglomerate the information of several
GtkStyleProviders for widgets and theme engines to query it.
This commit is contained in:
Carlos Garnacho 2010-03-04 23:00:30 +01:00
parent 530ae15f96
commit 2b425d89c8
4 changed files with 287 additions and 0 deletions
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2
gtk/Makefile.am
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@ -291,6 +291,7 @@ gtk_public_h_sources = \
gtkstatusbar.h \
gtkstatusicon.h \
gtkstock.h \
gtkstylecontext.h \
gtkstyleprovider.h \
gtkstyleset.h \
gtkstyle.h \
@ -589,6 +590,7 @@ gtk_base_c_sources = \
gtkstatusbar.c \
gtkstatusicon.c \
gtkstock.c \
gtkstylecontext.c \
gtkstyleprovider.c \
gtkstyleset.c \
gtkstyle.c \

1
gtk/gtk.h
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@ -174,6 +174,7 @@
#include <gtk/gtkstatusbar.h>
#include <gtk/gtkstatusicon.h>
#include <gtk/gtkstock.h>
#include <gtk/gtkstylecontext.h>
#include <gtk/gtkstyleprovider.h>
#include <gtk/gtkstyleset.h>
#include <gtk/gtkstyle.h>

225
gtk/gtkstylecontext.c Normal file
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@ -0,0 +1,225 @@
/* 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 <gdk/gdk.h>
#include "gtkstylecontext.h"
#include "gtktypebuiltins.h"
#include "gtkintl.h"
#include "gtkalias.h"
typedef struct GtkStyleContextPrivate GtkStyleContextPrivate;
typedef struct GtkStyleProviderData GtkStyleProviderData;
struct GtkStyleProviderData
{
GtkStyleProvider *provider;
guint priority;
};
struct GtkStyleContextPrivate
{
GList *providers;
GtkStyleSet *store;
};
#define GTK_STYLE_CONTEXT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_STYLE_CONTEXT, GtkStyleContextPrivate))
static void gtk_style_context_finalize (GObject *object);
G_DEFINE_TYPE (GtkStyleContext, gtk_style_context, G_TYPE_OBJECT)
static void
gtk_style_context_class_init (GtkStyleContextClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_style_context_finalize;
g_type_class_add_private (object_class, sizeof (GtkStyleContextPrivate));
}
static void
gtk_style_context_init (GtkStyleContext *style_context)
{
GtkStyleContextPrivate *priv;
priv = GTK_STYLE_CONTEXT_GET_PRIVATE (style_context);
priv->store = gtk_style_set_new ();
}
static GtkStyleProviderData *
style_provider_data_new (GtkStyleProvider *provider,
guint priority)
{
GtkStyleProviderData *data;
data = g_slice_new (GtkStyleProviderData);
data->provider = g_object_ref (provider);
data->priority = priority;
return data;
}
static void
style_provider_data_free (GtkStyleProviderData *data)
{
g_object_unref (data->provider);
g_slice_free (GtkStyleProviderData, data);
}
static void
gtk_style_context_finalize (GObject *object)
{
GtkStyleContextPrivate *priv;
priv = GTK_STYLE_CONTEXT_GET_PRIVATE (object);
g_list_foreach (priv->providers, (GFunc) style_provider_data_free, NULL);
g_list_free (priv->providers);
G_OBJECT_CLASS (gtk_style_context_parent_class)->finalize (object);
}
static void
rebuild_properties (GtkStyleContext *context)
{
GtkStyleContextPrivate *priv;
GList *list;
priv = GTK_STYLE_CONTEXT_GET_PRIVATE (context);
list = priv->providers;
gtk_style_set_clear (priv->store);
while (list)
{
GtkStyleProviderData *data;
GtkStyleSet *provider_style;
data = list->data;
list = list->next;
provider_style = gtk_style_provider_get_style (data->provider);
gtk_style_set_merge (priv->store, provider_style, TRUE);
g_object_unref (provider_style);
}
}
void
gtk_style_context_add_provider (GtkStyleContext *context,
GtkStyleProvider *provider,
guint priority)
{
GtkStyleContextPrivate *priv;
GtkStyleProviderData *new_data;
gboolean added = FALSE;
GList *list;
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
g_return_if_fail (GTK_IS_STYLE_PROVIDER (provider));
priv = GTK_STYLE_CONTEXT_GET_PRIVATE (context);
new_data = style_provider_data_new (provider, priority);
list = priv->providers;
while (list)
{
GtkStyleProviderData *data;
data = list->data;
/* Provider was already attached to the style
* context, remove in order to add the new data
*/
if (data->provider == provider)
{
GList *link;
link = list;
list = list->next;
/* Remove and free link */
priv->providers = g_list_remove_link (priv->providers, link);
style_provider_data_free (link->data);
g_list_free_1 (link);
continue;
}
if (!added &&
data->priority > priority)
{
priv->providers = g_list_insert_before (priv->providers, list, new_data);
added = TRUE;
}
list = list->next;
}
if (!added)
priv->providers = g_list_append (priv->providers, new_data);
rebuild_properties (context);
}
void
gtk_style_context_remove_provider (GtkStyleContext *context,
GtkStyleProvider *provider)
{
GtkStyleContextPrivate *priv;
gboolean removed = FALSE;
GList *list;
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
g_return_if_fail (GTK_IS_STYLE_PROVIDER (provider));
priv = GTK_STYLE_CONTEXT_GET_PRIVATE (context);
list = priv->providers;
while (list)
{
GtkStyleProviderData *data;
data = list->data;
if (data->provider == provider)
{
priv->providers = g_list_remove_link (priv->providers, list);
style_provider_data_free (list->data);
g_list_free_1 (list);
removed = TRUE;
break;
}
list = list->next;
}
if (removed)
rebuild_properties (context);
}
#define __GTK_STYLE_CONTEXT_C__
#include "gtkaliasdef.c"

59
gtk/gtkstylecontext.h Normal file
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@ -0,0 +1,59 @@
/* 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_STYLE_CONTEXT_H__
#define __GTK_STYLE_CONTEXT_H__
#include <glib-object.h>
#include "gtkstyleprovider.h"
G_BEGIN_DECLS
#define GTK_TYPE_STYLE_CONTEXT (gtk_style_context_get_type ())
#define GTK_STYLE_CONTEXT(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_STYLE_CONTEXT, GtkStyleContext))
#define GTK_STYLE_CONTEXT_CLASS(c) (G_TYPE_CHECK_CLASS_CAST ((c), GTK_TYPE_STYLE_CONTEXT, GtkStyleContextClass))
#define GTK_IS_STYLE_CONTEXT(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_STYLE_CONTEXT))
#define GTK_IS_STYLE_CONTEXT_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE ((c), GTK_TYPE_STYLE_CONTEXT))
#define GTK_STYLE_CONTEXT_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GTK_TYPE_STYLE_CONTEXT, GtkStyleContextClass))
typedef struct GtkStyleContext GtkStyleContext;
typedef struct GtkStyleContextClass GtkStyleContextClass;
struct GtkStyleContext
{
GObject parent_object;
};
struct GtkStyleContextClass
{
GObjectClass parent_class;
};
GType gtk_style_context_get_type (void) G_GNUC_CONST;
void gtk_style_context_add_provider (GtkStyleContext *context,
GtkStyleProvider *provider,
guint priority);
void gtk_style_context_remove_provider (GtkStyleContext *context,
GtkStyleProvider *provider);
G_END_DECLS
#endif /* __GTK_STYLE_CONTEXT_H__ */