moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 178 insertions, 0 deletions

diff --git a/eel/eel-gtk-macros.h b/eel/eel-gtk-macros.h
new file mode 100644
index 00000000..996d75f8
--- /dev/null
+++ b/eel/eel-gtk-macros.h
@@ -0,0 +1,178 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
+
+   eel-gtk-macros.h: Macros to reduce boilerplate when using GTK.
+
+   Copyright (C) 1999, 2000, 2001 Eazel, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the
+   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+
+   Authors: Darin Adler <[email protected]>
+            Ramiro Estrugo <[email protected]>
+*/
+
+#ifndef EEL_GTK_MACROS_H
+#define EEL_GTK_MACROS_H
+
+#ifndef EEL_DISABLE_DEPRECATED
+
+/* Define a parent_class global and a get_type function for a GTK class.
+   Since this is boilerplate, it's better not to repeat it over and over again.
+   Called like this:
+
+       EEL_CLASS_BOILERPLATE (EelBookmark, eel_bookmark, GTK_TYPE_OBJECT)
+
+   The parent_class_type parameter is guaranteed to be evaluated only once
+   so it can be an expression, even an expression that contains a function call.
+*/
+
+#define EEL_CLASS_BOILERPLATE(class_name, prefix, parent_class_type)          \
+	EEL_BOILERPLATE (class_name, class_name, prefix, parent_class_type,   \
+                         EEL_REGISTER_TYPE)
+#define EEL_REGISTER_TYPE(class_name, corba_name)                             \
+	g_type_register_static (parent_type, #class_name, &info, 0)
+
+#define EEL_BOILERPLATE(class_name, corba_name, prefix, parent_class_type,    \
+                        register_type)                                        \
+                                                                              \
+static gpointer parent_class;                                                 \
+                                                                              \
+GType                                                                         \
+prefix##_get_type (void)                                                      \
+{                                                                             \
+	GType parent_type;                                                    \
+	static GType type;                                                    \
+                                                                              \
+	if (type == 0) {                                                      \
+		static GTypeInfo info = {                                     \
+			sizeof (class_name##Class),                           \
+                        NULL, NULL,                                           \
+			(GClassInitFunc) prefix##_class_init,                 \
+                        NULL, NULL,                                           \
+			sizeof (class_name), 0,                               \
+			(GInstanceInitFunc) prefix##_init,                    \
+			NULL                                                  \
+		};                                                            \
+                                                                              \
+		parent_type = (parent_class_type);                            \
+		type = register_type (class_name, corba_name);                \
+		parent_class = g_type_class_ref (parent_type);                \
+	}                                                                     \
+                                                                              \
+	return type;                                                          \
+}
+
+/* Call a parent class version of a virtual function (or default
+ * signal handler since that's the same thing). Nice because it
+ * documents what it's doing and there is less chance for a
+ * typo. Depends on the parent class pointer having the conventional
+ * name "parent_class" as the boilerplate macro above does it.
+ */
+#define EEL_CALL_PARENT(parent_class_cast_macro, signal, parameters)          \
+                                                                              \
+G_STMT_START {                                                                \
+	if (parent_class_cast_macro (parent_class)->signal != NULL) {         \
+		(* parent_class_cast_macro (parent_class)->signal) parameters;\
+        }                                                                     \
+} G_STMT_END
+
+/* Same thing, for functions with a return value. */
+#define EEL_CALL_PARENT_WITH_RETURN_VALUE(parent_class_cast_macro, signal,    \
+                                          parameters)                         \
+                                                                              \
+(parent_class_cast_macro (parent_class)->signal == NULL)                      \
+	? 0                                                                   \
+	: ((* parent_class_cast_macro (parent_class)->signal) parameters)
+
+#endif /* EEL_DISABLE_DEPRECATED */
+
+/* Call a virtual function. Useful when the virtual function is not a
+ * signal, otherwise you want to gtk_signal emit. Nice because it
+ * documents what it's doing and there is less chance for a typo.
+ */
+#define EEL_CALL_METHOD(class_cast_macro, object, signal, parameters)         \
+                                                                              \
+G_STMT_START {                                                                \
+	if (class_cast_macro (G_OBJECT_GET_CLASS (object))->signal != NULL) { \
+		(* class_cast_macro (G_OBJECT_GET_CLASS (object))->signal)    \
+                parameters;                                                   \
+	}                                                                     \
+} G_STMT_END
+
+/* Same thing, for functions with a return value. */
+#define EEL_CALL_METHOD_WITH_RETURN_VALUE(class_cast_macro, object, signal,   \
+                                          parameters)                         \
+                                                                              \
+(class_cast_macro (G_OBJECT_GET_CLASS (object))->signal == NULL)              \
+	? 0                                                                   \
+	: ((* class_cast_macro (G_OBJECT_GET_CLASS (object))->signal)         \
+           parameters)                                                        \
+ 
+#ifndef G_DISABLE_ASSERT
+
+/* Define a signal that is not implemented by this class but must be
+ * implemented by subclasses. This macro should be used inside the
+ * class initialization function. The companion macro EEL_IMPLEMENT_MUST_OVERRIDE_SIGNAL
+ * must be used earlier in the file. Called like this:
+ *
+ * EEL_ASSIGN_MUST_OVERRIDE_SIGNAL (klass,
+ *					 fm_directory_view,
+ *					 clear);
+ */
+#define EEL_ASSIGN_MUST_OVERRIDE_SIGNAL(class_pointer, prefix, signal)        \
+                                                                              \
+* (void (**)(void)) & (class_pointer)->signal = prefix##_unimplemented_##signal
+
+/* Provide a debug-only implementation of a signal that must be implemented
+ * by subclasses. The debug-only implementation fires a warning if it is called.
+ * This macro should be placed as if it were a function, earlier in the file
+ * than the class initialization function. Called like this:
+ *
+ * EEL_IMPLEMENT_MUST_OVERRIDE_SIGNAL (fm_directory_view, clear);
+ */
+#define EEL_IMPLEMENT_MUST_OVERRIDE_SIGNAL(prefix, signal)                    \
+                                                                              \
+static void                                                                   \
+prefix##_unimplemented_##signal (void)                                        \
+{                                                                             \
+	g_warning ("failed to override signal " #prefix "->" #signal);        \
+}
+
+#else /* G_DISABLE_ASSERT */
+
+#define EEL_DEFINE_MUST_OVERRIDE_SIGNAL(class_cast_macro, class_pointer, prefix, signal)
+#define EEL_IMPLEMENT_MUST_OVERRIDE_SIGNAL(prefix, signal)
+#define EEL_ASSIGN_MUST_OVERRIDE_SIGNAL(class_pointer, prefix, signal)
+
+#endif /* G_DISABLE_ASSERT */
+
+/* Access a method. */
+#define EEL_ACCESS_METHOD(class_cast_macro, object, method)                   \
+(class_cast_macro (G_OBJECT_GET_CLASS (object))->method)
+
+/* Invoke a method for a given object. */
+#define EEL_INVOKE_METHOD(class_cast_macro, object, method, parameters)       \
+((* EEL_ACCESS_METHOD (class_cast_macro, object, method)) parameters)
+
+/* Assert the non-nullness of a method for a given object. */
+#define EEL_ASSERT_METHOD(class_cast_macro, object, method)                   \
+g_assert (EEL_ACCESS_METHOD (class_cast_macro, object, method) != NULL)
+
+/* Invoke a method if it ain't null. */
+#define EEL_INVOKE_METHOD_IF(class_cast_macro, object, method, parameters)    \
+(EEL_ACCESS_METHOD (class_cast_macro, object, method) ? 0 :                   \
+	EEL_INVOKE_METHOD (class_cast_macro, object, method, parameters))
+
+#endif /* EEL_GTK_MACROS_H */