gui/Status.h

   1 // Linguistica’s interface to Qt’s status and progress bars.
   2 // Copyright © 2010 The University of Chicago
   3 #ifndef LXA_GUI_STATUS_H
   4 #define LXA_GUI_STATUS_H
   5
   6 namespace linguistica { namespace ui {
   7         struct status_user_agent;
   8
   9         namespace qt {
  10                 struct status_interface;
  11         }
  12 } }
  13
  14 #include "ui/Status.h"
  15 class QLabel;
  16 class QProgressBar;
  17
  18 class linguistica::ui::qt::status_interface
  19                 : public linguistica::ui::status_user_agent {
  20         struct label : public status_user_agent::string_type {
  21                 QLabel& w;
  22                 explicit label(QLabel& bar) : w(bar) { }
  23         private:
  24                 // XXX. lxa processing blocks repaint events.
  25                 void update();
  26         public:
  27                 void clear();
  28                 label& operator=(const QString& str);
  29                 // caller is responsible for freeing the label.
  30         };
  31
  32         struct progressbar : public status_user_agent::progress_type {
  33                 QProgressBar& w;
  34                 explicit progressbar(QProgressBar& bar) : w(bar) { }
  35         private:
  36                 // XXX. lxa processing blocks repaint events.
  37                 void update();
  38                 progressbar& assign(int n);
  39         public:
  40                 void clear();
  41                 void set_denominator(int denom);
  42                 // caller is responsible for progress bar.
  43         };
  44
  45         label l;
  46         progressbar m;
  47         label r;
  48 public:
  49         status_interface(QLabel& left, QLabel& right, QProgressBar& middle)
  50                 : status_user_agent(l, r, m), l(left), m(middle), r(right) { }
  51 };
  52
  53 #endif // LXA_GUI_STATUS_H