moving trunk for module inkscape

(bzr r1)

1 files changed, 157 insertions, 0 deletions

diff --git a/src/libnr/nr-object.h b/src/libnr/nr-object.h
new file mode 100644
index 000000000..f39814b0d
--- /dev/null
+++ b/src/libnr/nr-object.h
@@ -0,0 +1,157 @@
+#ifndef __NR_OBJECT_H__
+#define __NR_OBJECT_H__
+
+/*
+ * RGBA display list system for inkscape
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   MenTaLguY <mental@rydia.net>
+ *
+ * This code is in public domain
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <glib/gtypes.h>
+#include "gc-managed.h"
+#include "gc-finalized.h"
+#include "gc-anchored.h"
+
+typedef guint32 NRType;
+
+struct NRObject;
+struct NRObjectClass;
+
+#define NR_TYPE_OBJECT (nr_object_get_type ())
+#define NR_OBJECT(o) (NR_CHECK_INSTANCE_CAST ((o), NR_TYPE_OBJECT, NRObject))
+#define NR_IS_OBJECT(o) (NR_CHECK_INSTANCE_TYPE ((o), NR_TYPE_OBJECT))
+
+#define NR_TYPE_ACTIVE_OBJECT (nr_active_object_get_type ())
+#define NR_ACTIVE_OBJECT(o) (NR_CHECK_INSTANCE_CAST ((o), NR_TYPE_ACTIVE_OBJECT, NRActiveObject))
+#define NR_IS_ACTIVE_OBJECT(o) (NR_CHECK_INSTANCE_TYPE ((o), NR_TYPE_ACTIVE_OBJECT))
+
+#define nr_return_if_fail(expr) if (!(expr) && nr_emit_fail_warning (__FILE__, __LINE__, "?", #expr)) return
+#define nr_return_val_if_fail(expr,val) if (!(expr) && nr_emit_fail_warning (__FILE__, __LINE__, "?", #expr)) return (val)
+
+unsigned int nr_emit_fail_warning (const gchar *file, unsigned int line, const gchar *method, const gchar *expr);
+
+#ifndef NR_DISABLE_CAST_CHECKS
+#define NR_CHECK_INSTANCE_CAST(ip, tc, ct) ((ct *) nr_object_check_instance_cast (ip, tc))
+#else
+#define NR_CHECK_INSTANCE_CAST(ip, tc, ct) ((ct *) ip)
+#endif
+
+#define NR_CHECK_INSTANCE_TYPE(ip, tc) nr_object_check_instance_type (ip, tc)
+#define NR_OBJECT_GET_CLASS(ip) (((NRObject *) ip)->klass)
+
+NRType nr_type_is_a (NRType type, NRType test);
+
+void const *nr_object_check_instance_cast(void const *ip, NRType tc);
+unsigned int nr_object_check_instance_type(void const *ip, NRType tc);
+
+NRType nr_object_register_type (NRType parent,
+				gchar const *name,
+				unsigned int csize,
+				unsigned int isize,
+				void (* cinit) (NRObjectClass *),
+				void (* iinit) (NRObject *));
+
+/* NRObject */
+
+class NRObject : public Inkscape::GC::Managed<>,
+                 public Inkscape::GC::Finalized,
+                 public Inkscape::GC::Anchored
+{
+public:
+	NRObjectClass *klass;
+
+	static NRObject *alloc(NRType type);
+
+	template <typename T>
+	static void invoke_ctor(NRObject *object) {
+		new (object) T();
+	}
+
+	/* these can go away eventually */
+	NRObject *reference() {
+		return Inkscape::GC::anchor(this);
+	}
+	NRObject *unreference() {
+		Inkscape::GC::release(this);
+		return NULL;
+	}
+
+protected:
+	NRObject() {}
+
+private:
+	NRObject(NRObject const &); // no copy
+	void operator=(NRObject const &); // no assign
+
+	void *operator new(size_t size, void *placement) { return placement; }
+};
+
+struct NRObjectClass {
+	NRType type;
+	NRObjectClass *parent;
+
+	gchar *name;
+	unsigned int csize;
+	unsigned int isize;
+	void (* cinit) (NRObjectClass *);
+	void (* iinit) (NRObject *);
+	void (* finalize) (NRObject *object);
+	void (*cpp_ctor)(NRObject *object);
+};
+
+NRType nr_object_get_type (void);
+
+/* Dynamic lifecycle */
+
+inline NRObject *nr_object_new (NRType type) {
+	return NRObject::alloc(type);
+}
+
+inline NRObject *nr_object_ref (NRObject *object) {
+	return object->reference();
+}
+inline NRObject *nr_object_unref (NRObject *object) {
+	return object->unreference();
+}
+
+/* NRActiveObject */
+
+struct NRObjectEventVector {
+	void (* dispose) (NRObject *object, void *data);
+};
+
+struct NRObjectListener {
+	const NRObjectEventVector *vector;
+	unsigned int size;
+	void *data;
+};
+
+struct NRObjectCallbackBlock {
+	unsigned int size;
+	unsigned int length;
+	NRObjectListener listeners[1];
+};
+
+struct NRActiveObject : public NRObject {
+	NRActiveObject() : callbacks(NULL) {}
+	NRObjectCallbackBlock *callbacks;
+};
+
+struct NRActiveObjectClass : public NRObjectClass {
+};
+
+NRType nr_active_object_get_type (void);
+
+void nr_active_object_add_listener (NRActiveObject *object, const NRObjectEventVector *vector, unsigned int size, void *data);
+void nr_active_object_remove_listener_by_data (NRActiveObject *object, void *data);
+
+#endif
+