1 files changed, 27 insertions, 0 deletions
diff --git a/gtk2_ardour/cairo_widget.h b/gtk2_ardour/cairo_widget.h
new file mode 100644
index 0000000000..99f0d5d8c3
--- /dev/null
+++ b/gtk2_ardour/cairo_widget.h
@@ -0,0 +1,27 @@
+#ifndef __gtk2_ardour_cairo_widget_h__
+#define __gtk2_ardour_cairo_widget_h__
+
+#include <gtkmm/eventbox.h>
+
+class CairoWidget : public Gtk::EventBox
+{
+public:
+	CairoWidget ();
+	virtual ~CairoWidget ();
+
+	void set_dirty ();
+
+protected:
+	virtual void render (cairo_t *) = 0;
+	virtual bool on_expose_event (GdkEventExpose *);
+	void on_size_allocate (Gtk::Allocation &);
+
+	int _width; ///< pixmap width
+	int _height; ///< pixmap height
+	
+private:
+	bool _dirty;
+	GdkPixmap* _pixmap;
+};
+
+#endif