source/smoothcontrol.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgbase
   4 Copyright © 2007 Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include "smoothcontrol.h"
   9
  10 namespace Msp {
  11 namespace Input {
  12
  13 SmoothControl::SmoothControl():
  14         value(0),
  15         paired_ctrl(0)
  16 { }
  17
  18 SmoothControl::SmoothControl(const ControlSource &s):
  19         Control(s),
  20         value(0),
  21         paired_ctrl(0)
  22 { }
  23
  24 SmoothControl::SmoothControl(Device &d, ControlSrcType t, unsigned i):
  25         Control(d, t, i),
  26         value(0),
  27         paired_ctrl(0)
  28 { }
  29
  30 void SmoothControl::pair(SmoothControl *ctrl)
  31 {
  32         if(ctrl==paired_ctrl)
  33                 return;
  34
  35         if(paired_ctrl)
  36         {
  37                 paired_ctrl=0;
  38                 paired_ctrl->pair(0);
  39         }
  40
  41         paired_ctrl=ctrl;
  42
  43         if(paired_ctrl)
  44                 paired_ctrl->pair(this);
  45 }
  46
  47 void SmoothControl::on_press()
  48 {
  49         on_motion(1, 1-value);
  50 }
  51
  52 void SmoothControl::on_release()
  53 {
  54         on_motion(0, -value);
  55 }
  56
  57 void SmoothControl::on_motion(float v, float)
  58 {
  59         value=v;
  60         signal_motion.emit(value);
  61
  62         if(paired_ctrl)
  63                 paired_ctrl->signal_motion.emit(-value);
  64 }
  65
  66 } // namespace Input
  67 } // namespace Msp