measure.h

   1 /* $Id$
   2
   3 This file is part of R²C²
   4 Copyright © 2006-2008 Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #ifndef MEASURE_H_
   9 #define MEASURE_H_
  10
  11 #include <sigc++/sigc++.h>
  12
  13 class Designer;
  14
  15 class Measure
  16 {
  17 private:
  18         enum State
  19         {
  20                 NONE,
  21                 STARTING,
  22                 ACTIVE
  23         };
  24
  25 public:
  26         sigc::signal<void> signal_done;
  27         sigc::signal<void> signal_changed;
  28
  29 private:
  30         Designer &designer;
  31         R2C2::Vector pointer;
  32         R2C2::Vector spoint;
  33         float sdir;
  34         float par_dist;
  35         float perp_dist;
  36         float adiff;
  37         State state;
  38
  39 public:
  40         Measure(Designer &);
  41         float get_parallel_distance() const { return par_dist; }
  42         float get_perpendicular_distance() const { return perp_dist; }
  43         float get_angle_difference() const { return adiff; }
  44         void start();
  45         void button_press(int, int, float, float, unsigned);
  46         void pointer_motion(int, int, float, float);
  47         void render();
  48 private:
  49         void snap_to_tracks(R2C2::Vector &, float &);
  50 };
  51
  52 #endif