Make a separate library.

This is required for gtkdoc-scangobj. So far it's much like it's been
before, the main differences are that source files are in two directories
from now on and the build process has two stages.

liblogdiag/ld-diagram-object.c

@@ -0,0 +1,186 @@
+/*
+ * ld-diagram-object.c
+ *
+ * This file is a part of logdiag.
+ * Copyright Přemysl Janouch 2010. All rights reserved.
+ *
+ * See the file LICENSE for licensing information.
+ *
+ */
+
+#include "liblogdiag.h"
+#include "config.h"
+
+
+/**
+ * SECTION:ld-diagram-object
+ * @short_description: A diagram object.
+ * @see_also: #LdDiagram, #LdCanvas
+ *
+ * #LdDiagramObject represents an object in an #LdDiagram.
+ */
+
+/*
+ * LdDiagramObjectPrivate:
+ * @x: The X coordinate of this object.
+ * @y: The Y coordinate of this object.
+ */
+struct _LdDiagramObjectPrivate
+{
+	gdouble x;
+	gdouble y;
+};
+
+enum
+{
+	PROP_0,
+	PROP_X,
+	PROP_Y
+};
+
+static void ld_diagram_object_get_property (GObject *object, guint property_id,
+	GValue *value, GParamSpec *pspec);
+static void ld_diagram_object_set_property (GObject *object, guint property_id,
+	const GValue *value, GParamSpec *pspec);
+
+
+G_DEFINE_ABSTRACT_TYPE (LdDiagramObject, ld_diagram_object, G_TYPE_OBJECT);
+
+static void
+ld_diagram_object_class_init (LdDiagramObjectClass *klass)
+{
+	GObjectClass *object_class;
+	GParamSpec *pspec;
+
+	object_class = G_OBJECT_CLASS (klass);
+	object_class->get_property = ld_diagram_object_get_property;
+	object_class->set_property = ld_diagram_object_set_property;
+
+/**
+ * LdDiagramObject:x:
+ *
+ * The X coordinate of the object.
+ */
+	pspec = g_param_spec_double ("x", "X",
+		"The X coordinate of this object.",
+		-G_MAXDOUBLE, G_MAXDOUBLE, 0, G_PARAM_READWRITE);
+	g_object_class_install_property (object_class, PROP_X, pspec);
+
+/**
+ * LdDiagramObject:y:
+ *
+ * The Y coordinate of the object.
+ */
+	pspec = g_param_spec_double ("y", "Y",
+		"The Y coordinate of this object.",
+		-G_MAXDOUBLE, G_MAXDOUBLE, 0, G_PARAM_READWRITE);
+	g_object_class_install_property (object_class, PROP_Y, pspec);
+
+	g_type_class_add_private (klass, sizeof (LdDiagramObjectPrivate));
+}
+
+static void
+ld_diagram_object_init (LdDiagramObject *self)
+{
+	self->priv = G_TYPE_INSTANCE_GET_PRIVATE
+		(self, LD_TYPE_DIAGRAM_OBJECT, LdDiagramObjectPrivate);
+}
+
+static void
+ld_diagram_object_get_property (GObject *object, guint property_id,
+	GValue *value, GParamSpec *pspec)
+{
+	LdDiagramObject *self;
+
+	self = LD_DIAGRAM_OBJECT (object);
+	switch (property_id)
+	{
+	case PROP_X:
+		g_value_set_double (value, ld_diagram_object_get_x (self));
+		break;
+	case PROP_Y:
+		g_value_set_double (value, ld_diagram_object_get_y (self));
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+	}
+}
+
+static void
+ld_diagram_object_set_property (GObject *object, guint property_id,
+	const GValue *value, GParamSpec *pspec)
+{
+	LdDiagramObject *self;
+
+	self = LD_DIAGRAM_OBJECT (object);
+	switch (property_id)
+	{
+	case PROP_X:
+		ld_diagram_object_set_x (self, g_value_get_double (value));
+		break;
+	case PROP_Y:
+		ld_diagram_object_set_y (self, g_value_get_double (value));
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+	}
+}
+
+
+/**
+ * ld_diagram_object_get_x:
+ * @self: An #LdDiagramObject object.
+ *
+ * Return value: The X coordinate of the object.
+ */
+gdouble
+ld_diagram_object_get_x (LdDiagramObject *self)
+{
+	g_return_val_if_fail (LD_IS_DIAGRAM_OBJECT (self), 0);
+	return self->priv->x;
+}
+
+/**
+ * ld_diagram_object_get_y:
+ * @self: An #LdDiagramObject object.
+ *
+ * Return value: The Y coordinate of the object.
+ */
+gdouble
+ld_diagram_object_get_y (LdDiagramObject *self)
+{
+	g_return_val_if_fail (LD_IS_DIAGRAM_OBJECT (self), 0);
+	return self->priv->y;
+}
+
+/**
+ * ld_diagram_object_set_x:
+ * @self: An #LdDiagramObject object.
+ * @x: The new X coordinate.
+ *
+ * Set the X coordinate of the object.
+ */
+void
+ld_diagram_object_set_x (LdDiagramObject *self, gdouble x)
+{
+	g_return_if_fail (LD_IS_DIAGRAM_OBJECT (self));
+	self->priv->x = x;
+
+	g_object_notify (G_OBJECT (self), "x");
+}
+
+/**
+ * ld_diagram_object_set_y:
+ * @self: An #LdDiagramObject object.
+ * @y: The new Y coordinate.
+ *
+ * Set the Y coordinate of the object.
+ */
+void
+ld_diagram_object_set_y (LdDiagramObject *self, gdouble y)
+{
+	g_return_if_fail (LD_IS_DIAGRAM_OBJECT (self));
+	self->priv->y = y;
+
+	g_object_notify (G_OBJECT (self), "y");
+}