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generic_motion_feedback.h

/*
    Copyright (C) 1998-99 Paul Barton-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.

    $Id: generic_motion_feedback.h,v 1.1.1.1 2001/11/24 00:44:41 pbd Exp $
*/
#ifndef __qm_generic_motion_feedback_h__
#define __qm_generic_motion_feedback_h__

#include <gtkmmext/pix.h>
#include <gtkmmext/shaped_window.h>

class GenericMotionFeedback : public Gtk::VBox

{
 public:
      GenericMotionFeedback (Gtk::Widget &, 
                         const char *widget_name = NULL,
                         Gtk::Adjustment *adj = NULL,
                         gfloat y_scale_factor = 10);
      virtual ~GenericMotionFeedback ();

      void set_adjustment (Gtk::Adjustment *adj);
      Gtk::Adjustment *get_adjustment () const { return adjustment; }

      Gtk::Widget &eventwin () const { return widget; }

      gfloat lower () const { return _lower; }
      gfloat upper () const { return _upper; }
      gfloat range () const { return _range; }

      gfloat yscale ()const { return _yscale; }
      void set_yscale (gfloat f) { _yscale = f; }

 protected:
      gfloat _yscale;
      gfloat _range;
      gfloat _lower;
      gfloat _upper;

      gint widget_button_press_event (GdkEventButton *);
      gint widget_button_release_event (GdkEventButton *);
      gint widget_motion_notify_event (GdkEventMotion *);
      gint widget_key_press_event (GdkEventKey *);
      gint widget_enter_notify_event (GdkEventCrossing *);
      gint widget_leave_notify_event (GdkEventCrossing *);
      gint widget_focus_in_event (GdkEventFocus*);
      gint widget_focus_out_event (GdkEventFocus *);

  private:
      Gtk::Widget       &widget;
      Gtk::Adjustment   *adjustment;
      
      gfloat step_inc;
      gfloat page_inc;
      gfloat current_step;
      bool   grab_is_fine;
      gdouble grabbed_y;
      gdouble grabbed_x;

      bool i_own_my_adjustment;
};
      
#endif // __qm_generic_motion_feedback_h__

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