[gtk+/gtk-style-context: 2/276] Add GtkStyleSet, a store of style properties.

[Carlos Garnacho <carlosg src gnome org>]

commit 10bd3ab927e960e2f629bf10b492c6a1190d8005
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Mar 4 20:59:18 2010 +0100

    Add GtkStyleSet, a store of style properties.
    
    At the moment there's only basic API for adding,
    removing and clearing a property. There's also
    API to merge 2 GtkStyleSets.

 gtk/Makefile.am   |    2 +
 gtk/gtk.h         |    1 +
 gtk/gtkstyleset.c |  254 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 gtk/gtkstyleset.h |   70 +++++++++++++++
 4 files changed, 327 insertions(+), 0 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 0774710..8359140 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -289,6 +289,7 @@ gtk_public_h_sources =          \
 	gtkstatusbar.h		\
 	gtkstatusicon.h		\
 	gtkstock.h		\
+	gtkstyleset.h		\
 	gtkstyle.h		\
 	gtktable.h		\
 	gtktearoffmenuitem.h    \
@@ -564,6 +565,7 @@ gtk_base_c_sources =            \
 	gtkstatusbar.c		\
 	gtkstatusicon.c		\
 	gtkstock.c		\
+	gtkstyleset.c		\
 	gtkstyle.c		\
 	gtktable.c		\
 	gtktearoffmenuitem.c    \
diff --git a/gtk/gtk.h b/gtk/gtk.h
index 6e99849..ba739f7 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -172,6 +172,7 @@
 #include <gtk/gtkstatusbar.h>
 #include <gtk/gtkstatusicon.h>
 #include <gtk/gtkstock.h>
+#include <gtk/gtkstyleset.h>
 #include <gtk/gtkstyle.h>
 #include <gtk/gtktable.h>
 #include <gtk/gtktearoffmenuitem.h>
diff --git a/gtk/gtkstyleset.c b/gtk/gtkstyleset.c
new file mode 100644
index 0000000..332d45b
--- /dev/null
+++ b/gtk/gtkstyleset.c
@@ -0,0 +1,254 @@
+/* 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 "gtkstyleset.h"
+#include "gtkprivate.h"
+#include "gtkintl.h"
+
+#include "gtkalias.h"
+
+typedef struct GtkStyleSetPrivate GtkStyleSetPrivate;
+typedef struct PropertyData PropertyData;
+
+struct PropertyData
+{
+  GValue values[GTK_STATE_LAST];
+};
+
+struct GtkStyleSetPrivate
+{
+  GHashTable *properties;
+};
+
+#define GTK_STYLE_SET_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_STYLE_SET, GtkStyleSetPrivate))
+
+static void gtk_style_set_finalize     (GObject      *object);
+
+
+G_DEFINE_TYPE (GtkStyleSet, gtk_style_set, G_TYPE_OBJECT)
+
+static void
+gtk_style_set_class_init (GtkStyleSetClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = gtk_style_set_finalize;
+
+  g_type_class_add_private (object_class, sizeof (GtkStyleSetPrivate));
+}
+
+static PropertyData *
+property_data_new (void)
+{
+  PropertyData *data;
+
+  data = g_slice_new0 (PropertyData);
+
+  return data;
+}
+
+static void
+property_data_free (PropertyData *data)
+{
+  gint i;
+
+  for (i = 0; i <= GTK_STATE_INSENSITIVE; i++)
+    g_value_unset (&data->values[i]);
+
+  g_slice_free (PropertyData, data);
+}
+
+static void
+gtk_style_set_init (GtkStyleSet *set)
+{
+  GtkStyleSetPrivate *priv;
+
+  priv = GTK_STYLE_SET_GET_PRIVATE (set);
+
+  priv->properties = g_hash_table_new_full (g_str_hash,
+                                            g_str_equal,
+                                            (GDestroyNotify) g_free,
+                                            (GDestroyNotify) property_data_free);
+}
+
+static void
+gtk_style_set_finalize (GObject *object)
+{
+  GtkStyleSetPrivate *priv;
+
+  priv = GTK_STYLE_SET_GET_PRIVATE (object);
+  g_hash_table_destroy (priv->properties);
+
+  G_OBJECT_CLASS (gtk_style_set_parent_class)->finalize (object);
+}
+
+GtkStyleSet *
+gtk_style_set_new (void)
+{
+  return g_object_new (GTK_TYPE_STYLE_SET, NULL);
+}
+
+void
+gtk_style_set_set_property (GtkStyleSet  *set,
+                            const gchar  *property,
+                            GtkStateType  state,
+                            const GValue *value)
+{
+  GtkStyleSetPrivate *priv;
+  PropertyData *prop;
+
+  g_return_if_fail (GTK_IS_STYLE_SET (set));
+  g_return_if_fail (property != NULL);
+  g_return_if_fail (state < GTK_STATE_LAST);
+  g_return_if_fail (value != NULL);
+
+  priv = GTK_STYLE_SET_GET_PRIVATE (set);
+  prop = g_hash_table_lookup (priv->properties, property);
+
+  if (!prop)
+    {
+      prop = property_data_new ();
+      g_hash_table_insert (priv->properties,
+                           g_strdup (property),
+                           prop);
+    }
+
+  if (G_VALUE_TYPE (&prop->values[state]) != G_TYPE_INVALID)
+    g_value_unset (&prop->values[state]);
+
+  g_value_init (&prop->values[state], G_VALUE_TYPE (value));
+  g_value_copy (value, &prop->values[state]);
+}
+
+gboolean
+gtk_style_set_get_property (GtkStyleSet  *set,
+                            const gchar  *property,
+                            GtkStateType  state,
+                            GValue       *value)
+{
+  GtkStyleSetPrivate *priv;
+  PropertyData *prop;
+
+  g_return_val_if_fail (GTK_IS_STYLE_SET (set), FALSE);
+  g_return_val_if_fail (property != NULL, FALSE);
+  g_return_val_if_fail (state < GTK_STATE_LAST, FALSE);
+  g_return_val_if_fail (value != NULL, FALSE);
+
+  priv = GTK_STYLE_SET_GET_PRIVATE (set);
+  prop = g_hash_table_lookup (priv->properties, property);
+
+  if (!prop)
+    return FALSE;
+
+  g_value_init (value, G_VALUE_TYPE (&prop->values[state]));
+  g_value_copy (&prop->values[state], value);
+
+  return TRUE;
+}
+
+void
+gtk_style_set_unset_property (GtkStyleSet  *set,
+                              const gchar  *property,
+                              GtkStateType  state)
+{
+  GtkStyleSetPrivate *priv;
+  PropertyData *prop;
+
+  g_return_if_fail (GTK_IS_STYLE_SET (set));
+  g_return_if_fail (property != NULL);
+  g_return_if_fail (state < GTK_STATE_LAST);
+
+  priv = GTK_STYLE_SET_GET_PRIVATE (set);
+  prop = g_hash_table_lookup (priv->properties, property);
+
+  if (!prop)
+    return;
+
+  g_value_unset (&prop->values[state]);
+}
+
+void
+gtk_style_set_clear (GtkStyleSet *set)
+{
+  GtkStyleSetPrivate *priv;
+
+  g_return_if_fail (GTK_IS_STYLE_SET (set));
+
+  priv = GTK_STYLE_SET_GET_PRIVATE (set);
+  g_hash_table_remove_all (priv->properties);
+}
+
+void
+gtk_style_set_merge (GtkStyleSet       *set,
+                     const GtkStyleSet *set_to_merge,
+                     gboolean           replace)
+{
+  GtkStyleSetPrivate *priv, *priv_to_merge;
+  GHashTableIter iter;
+  gpointer key, value;
+
+  g_return_if_fail (GTK_IS_STYLE_SET (set));
+  g_return_if_fail (GTK_IS_STYLE_SET (set_to_merge));
+
+  priv = GTK_STYLE_SET_GET_PRIVATE (set);
+  priv_to_merge = GTK_STYLE_SET_GET_PRIVATE (set_to_merge);
+
+  g_hash_table_iter_init (&iter, priv_to_merge->properties);
+
+  while (g_hash_table_iter_next (&iter, &key, &value))
+    {
+      const gchar *name_to_merge = key;
+      PropertyData *prop_to_merge = value;
+      PropertyData *prop = NULL;
+      GtkStateType i;
+
+      for (i = GTK_STATE_NORMAL; i < GTK_STATE_LAST; i++)
+        {
+          if (G_VALUE_TYPE (&prop_to_merge->values[i]) == G_TYPE_INVALID)
+            continue;
+
+          if (!prop)
+            prop = g_hash_table_lookup (priv->properties, name_to_merge);
+
+          if (!prop)
+            {
+              prop = property_data_new ();
+              g_hash_table_insert (priv->properties,
+                                   g_strdup (name_to_merge),
+                                   prop);
+            }
+
+          if (replace ||
+              G_VALUE_TYPE (&prop->values[i]) == G_TYPE_INVALID)
+            {
+              if (G_VALUE_TYPE (&prop->values[i]) == G_TYPE_INVALID)
+                g_value_init (&prop->values[i], G_VALUE_TYPE (&prop_to_merge->values[i]));
+
+              g_value_copy (&prop_to_merge->values[i],
+                            &prop->values[i]);
+            }
+        }
+    }
+}
+
+
+#define __GTK_STYLE_SET_C__
+#include "gtkaliasdef.c"
diff --git a/gtk/gtkstyleset.h b/gtk/gtkstyleset.h
new file mode 100644
index 0000000..48b3c3b
--- /dev/null
+++ b/gtk/gtkstyleset.h
@@ -0,0 +1,70 @@
+/* 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_SET_H__
+#define __GTK_STYLE_SET_H__
+
+#include <glib-object.h>
+#include "gtkenums.h"
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_STYLE_SET         (gtk_style_set_get_type ())
+#define GTK_STYLE_SET(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_STYLE_SET, GtkStyleSet))
+#define GTK_STYLE_SET_CLASS(c)     (G_TYPE_CHECK_CLASS_CAST    ((c), GTK_TYPE_STYLE_SET, GtkStyleSetClass))
+#define GTK_IS_STYLE_SET(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_STYLE_SET))
+#define GTK_IS_STYLE_SET_CLASS(c)  (G_TYPE_CHECK_CLASS_TYPE    ((c), GTK_TYPE_STYLE_SET))
+#define GTK_STYLE_SET_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS  ((o), GTK_TYPE_STYLE_SET, GtkStyleSetClass))
+
+typedef struct GtkStyleSet GtkStyleSet;
+typedef struct GtkStyleSetClass GtkStyleSetClass;
+
+struct GtkStyleSet
+{
+  GObject parent_object;
+};
+
+struct GtkStyleSetClass
+{
+  GObjectClass parent_class;
+};
+
+GType gtk_style_set_get_type (void) G_GNUC_CONST;
+
+GtkStyleSet * gtk_style_set_new (void);
+
+void     gtk_style_set_set_property (GtkStyleSet  *set,
+                                     const gchar  *property,
+                                     GtkStateType  state,
+                                     const GValue *value);
+
+gboolean gtk_style_set_get_property (GtkStyleSet  *set,
+                                     const gchar  *property,
+                                     GtkStateType  state,
+                                     GValue       *value);
+
+void     gtk_style_set_unset_property (GtkStyleSet  *set,
+                                       const gchar  *property,
+                                       GtkStateType  state);
+
+void     gtk_style_set_clear          (GtkStyleSet  *set);
+
+G_END_DECLS
+
+#endif /* __GTK_STYLE_PROPERTY_SET_H__ */