1 files changed, 88 insertions, 0 deletions
diff --git a/libs/gtkmm2ext/gtkmm2ext/scroomer.h b/libs/gtkmm2ext/gtkmm2ext/scroomer.h
new file mode 100644
index 0000000000..d4f2ce6aa3
--- /dev/null
+++ b/libs/gtkmm2ext/gtkmm2ext/scroomer.h
@@ -0,0 +1,88 @@
+/*
+    Copyright (C) 2008 Paul Davis 
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __gtkmm2ext_scroomer_h__ 
+#define __gtkmm2ext_scroomer_h__
+
+#include <gtkmm/drawingarea.h>
+#include <gtkmm/adjustment.h>
+#include <gdkmm.h>
+
+namespace Gtkmm2ext {
+
+class Scroomer : public Gtk::DrawingArea
+{
+public:
+	enum Component {
+		TopBase = 0,
+		Handle1 = 1,
+		Slider = 2,
+		Handle2 = 3,
+		BottomBase = 4,
+		Total = 5,
+		None = 6
+	};
+
+	Scroomer(Gtk::Adjustment& adjustment);
+	~Scroomer();
+
+	bool on_motion_notify_event (GdkEventMotion*);
+	bool on_button_press_event (GdkEventButton*);
+	bool on_button_release_event (GdkEventButton*);
+	bool on_scroll_event (GdkEventScroll*);
+	virtual void on_size_allocate (Gtk::Allocation&);
+
+	void set_comp_rect(GdkRectangle&, Component) const;
+
+	Component point_in(double point) const;
+
+	void set_min_page_size(double page_size);
+	int get_handle_size() { return handle_size; }
+	
+	inline int position_of(Component comp) { return position[comp]; }
+
+	// debug
+	std::string get_comp_name(Component);
+
+protected:
+	Gtk::Adjustment& adj;
+
+private:
+	struct UpdateRect {
+		GdkRectangle rect;
+		Component first_comp;
+	};
+
+	void update();
+	void adjustment_changed ();
+
+	int position[6];
+	int old_pos[6];
+	int handle_size;
+	double min_page_size;
+	GdkWindow* grab_window;
+	Component grab_comp;
+	double grab_y;
+	double unzoomed_val;
+	double unzoomed_page;
+};
+
+} // namespace
+
+#endif /* __gtkmm2ext_scroomer_h__ */