moving trunk for module inkscape

(bzr r1)

1 files changed, 228 insertions, 0 deletions

diff --git a/src/helper/action.cpp b/src/helper/action.cpp
new file mode 100644
index 000000000..9584c5dae
--- /dev/null
+++ b/src/helper/action.cpp
@@ -0,0 +1,228 @@
+#define __SP_ACTION_C__
+
+/** \file
+ * SPAction implementation
+ *
+ * Author:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 2003 Lauris Kaplinski
+ *
+ * This code is in public domain
+ */
+
+#include <string.h>
+
+
+#include "helper/action.h"
+
+static void sp_action_class_init (SPActionClass *klass);
+static void sp_action_init (SPAction *action);
+static void sp_action_finalize (NRObject *object);
+
+static NRActiveObjectClass *parent_class;
+
+/**
+ * Register SPAction class and return its type.
+ */
+NRType
+sp_action_get_type (void)
+{
+	static unsigned int type = 0;
+	if (!type) {
+		type = nr_object_register_type (NR_TYPE_ACTIVE_OBJECT,
+						"SPAction",
+						sizeof (SPActionClass),
+						sizeof (SPAction),
+						(void (*) (NRObjectClass *)) sp_action_class_init,
+						(void (*) (NRObject *)) sp_action_init);
+	}
+	return type;
+}
+
+/**
+ * SPAction vtable initialization.
+ */
+static void
+sp_action_class_init (SPActionClass *klass)
+{
+	NRObjectClass * object_class;
+
+	object_class = (NRObjectClass *) klass;
+
+	parent_class = (NRActiveObjectClass *) (((NRObjectClass *) klass)->parent);
+
+	object_class->finalize = sp_action_finalize;
+	object_class->cpp_ctor = NRObject::invoke_ctor<SPAction>;
+}
+
+/**
+ * Callback for SPAction object initialization.
+ */
+static void
+sp_action_init (SPAction *action)
+{
+	action->sensitive = 0;
+	action->active = 0;
+	action->view = NULL;
+	action->id = action->name = action->tip = NULL;
+	action->image = NULL;
+}
+
+/**
+ * Called before SPAction object destruction.
+ */
+static void
+sp_action_finalize (NRObject *object)
+{
+	SPAction *action;
+
+	action = (SPAction *) object;
+
+	if (action->image) free (action->image);
+	if (action->tip) free (action->tip);
+	if (action->name) free (action->name);
+	if (action->id) free (action->id);
+
+	((NRObjectClass *) (parent_class))->finalize (object);
+}
+
+/**
+ * Create new SPAction object and set its properties.
+ */
+SPAction *
+sp_action_new(Inkscape::UI::View::View *view,
+              const gchar *id,
+              const gchar *name,
+              const gchar *tip,
+              const gchar *image,
+              Inkscape::Verb * verb)
+{
+	SPAction *action = (SPAction *)nr_object_new(SP_TYPE_ACTION);
+
+	action->view = view;
+	action->sensitive = TRUE;
+	if (id) action->id = strdup (id);
+	if (name) action->name = strdup (name);
+	if (tip) action->tip = strdup (tip);
+	if (image) action->image = strdup (image);
+	action->verb = verb;
+
+	return action;
+}
+
+/**
+	\return   None
+	\brief    Executes an action
+	\param    action   The action to be executed
+	\param    data     Data that is passed into the action.  This depends
+	                   on the situation that the action is used in.
+
+	This function implements the 'action' in SPActions.  It first validates
+	its parameters, making sure it got an action passed in.  Then it
+	turns that action into its parent class of NRActiveObject.  The
+	NRActiveObject allows for listeners to be attached to it.  This
+	function goes through those listeners and calls them with the
+	vector that was attached to the listener.
+*/
+void
+sp_action_perform (SPAction *action, void * data)
+{
+	NRActiveObject *aobject;
+
+	nr_return_if_fail (action != NULL);
+	nr_return_if_fail (SP_IS_ACTION (action));
+
+	aobject = NR_ACTIVE_OBJECT(action);
+	if (aobject->callbacks) {
+		unsigned int i;
+		for (i = 0; i < aobject->callbacks->length; i++) {
+			NRObjectListener *listener;
+			SPActionEventVector *avector;
+
+			listener = &aobject->callbacks->listeners[i];
+			avector = (SPActionEventVector *) listener->vector;
+
+			if ((listener->size >= sizeof (SPActionEventVector)) && avector != NULL && avector->perform != NULL) {
+				avector->perform (action, listener->data, data);
+			}
+		}
+	}
+}
+
+/**
+ * Change activation in all actions that can be taken with the action.
+ */
+void
+sp_action_set_active (SPAction *action, unsigned int active)
+{
+	nr_return_if_fail (action != NULL);
+	nr_return_if_fail (SP_IS_ACTION (action));
+
+	if (active != action->active) {
+		NRActiveObject *aobject;
+		action->active = active;
+		aobject = (NRActiveObject *) action;
+		if (aobject->callbacks) {
+			unsigned int i;
+			for (i = 0; i < aobject->callbacks->length; i++) {
+				NRObjectListener *listener;
+				SPActionEventVector *avector;
+				listener = aobject->callbacks->listeners + i;
+				avector = (SPActionEventVector *) listener->vector;
+				if ((listener->size >= sizeof (SPActionEventVector)) && avector->set_active) {
+					avector->set_active (action, active, listener->data);
+				}
+			}
+		}
+	}
+}
+
+/**
+ * Change sensitivity in all actions that can be taken with the action.
+ */
+void
+sp_action_set_sensitive (SPAction *action, unsigned int sensitive)
+{
+	nr_return_if_fail (action != NULL);
+	nr_return_if_fail (SP_IS_ACTION (action));
+
+	if (sensitive != action->sensitive) {
+		NRActiveObject *aobject;
+		action->sensitive = sensitive;
+		aobject = (NRActiveObject *) action;
+		if (aobject->callbacks) {
+			unsigned int i;
+			for (i = 0; i < aobject->callbacks->length; i++) {
+				NRObjectListener *listener;
+				SPActionEventVector *avector;
+				listener = aobject->callbacks->listeners + i;
+				avector = (SPActionEventVector *) listener->vector;
+				if ((listener->size >= sizeof (SPActionEventVector)) && avector->set_sensitive) {
+					avector->set_sensitive (action, sensitive, listener->data);
+				}
+			}
+		}
+	}
+}
+
+/**
+ * Return View associated with the action.
+ */
+Inkscape::UI::View::View *
+sp_action_get_view (SPAction *action)
+{
+	g_return_val_if_fail (SP_IS_ACTION (action), NULL);
+	return action->view;
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :