1 files changed, 75 insertions, 0 deletions
diff --git a/src/extension/timer.h b/src/extension/timer.h
new file mode 100644
index 0000000..ce9c495
--- /dev/null
+++ b/src/extension/timer.h
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Here is where the extensions can get timed on when they load and
+ * unload.  All of the timing is done in here.
+ *
+ * Authors:
+ *   Ted Gould <ted@gould.cx>
+ *
+ * Copyright (C) 2004 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef INKSCAPE_EXTENSION_TIMER_H__
+#define INKSCAPE_EXTENSION_TIMER_H__
+
+#include <cstddef>
+#include <sigc++/sigc++.h>
+#include <glibmm/datetime.h>
+
+namespace Inkscape {
+namespace Extension {
+
+class Extension;
+
+class ExpirationTimer {
+    /** \brief Circularly linked list of all timers */
+    static ExpirationTimer * timer_list;
+    /** \brief Which timer was on top when we started the idle loop */
+    static ExpirationTimer * idle_start;
+    /** \brief What the current timeout is (in seconds) */
+    static long timeout;
+    /** \brief Has the timer been started? */
+    static bool timer_started;
+
+    /** \brief Is this extension locked from being unloaded? */
+    int locked;
+    /** \brief Next entry in the list */
+    ExpirationTimer * next;
+    /** \brief When this timer expires */
+    Glib::DateTime expiration;
+    /** \brief What extension this function relates to */
+    Extension * extension;
+
+    bool expired() const;
+
+    static bool idle_func ();
+    static bool timer_func ();
+
+public:
+    ExpirationTimer(Extension * in_extension);
+    virtual ~ExpirationTimer();
+
+    void touch ();
+    void lock ()   { locked++;  };
+    void unlock () { locked--; };
+
+    /** \brief Set the timeout variable */
+    static void set_timeout (long in_seconds) { timeout = in_seconds; };
+};
+
+}; }; /* namespace Inkscape, Extension */
+
+#endif /* INKSCAPE_EXTENSION_TIMER_H__ */
+
+/*
+  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 :