source/input/control.cpp

   1 #include "control.h"
   2 #include <sigc++/bind_return.h>
   3 #include <msp/strings/lexicalcast.h>
   4 #include "binarycontrol.h"
   5 #include "device.h"
   6
   7 using namespace std;
   8
   9 namespace Msp {
  10 namespace Input {
  11
  12 ControlSource::ControlSource(Device &d, ControlSrcType t, unsigned i):
  13         dev(&d),
  14         type(t),
  15         index(i)
  16 { }
  17
  18 std::string ControlSource::str() const
  19 {
  20         if(type==BUTTON)
  21                 return dev->get_button_name(index);
  22         else if(type==AXIS_POS)
  23                 return dev->get_axis_name(index)+" +";
  24         else if(type==AXIS_NEG)
  25                 return dev->get_axis_name(index)+" -";
  26         else if(type==NO_SOURCE)
  27                 return "None";
  28
  29         return lexical_cast<string>(index);
  30 }
  31
  32
  33 Control::Control(const ControlSource &s):
  34         src(s)
  35 { }
  36
  37 Control::Control(Device &d, ControlSrcType t, unsigned i):
  38         src(d, t, i)
  39 {
  40         connect_signals();
  41 }
  42
  43 Control::~Control()
  44 { }
  45
  46 void Control::capture(Device &d)
  47 {
  48         notify_callbacks();
  49         capture_dev = &d;
  50         capture_dev->signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &Control::button_press), false));
  51         capture_dev->signal_axis_motion.connect(sigc::bind_return(sigc::mem_fun(this, &Control::axis_motion), false));
  52 }
  53
  54 void Control::cancel_capture()
  55 {
  56         notify_callbacks();
  57         capture_dev = 0;
  58         connect_signals();
  59 }
  60
  61 void Control::set_source(Device &d, ControlSrcType t, unsigned i)
  62 {
  63         set_source(ControlSource(d, t, i));
  64 }
  65
  66 void Control::set_source(const ControlSource &s)
  67 {
  68         notify_callbacks();
  69         src = s;
  70         connect_signals();
  71 }
  72
  73 void Control::set_activator(BinaryControl *ctrl)
  74 {
  75         notify_callbacks();
  76         activator = ctrl;
  77         connect_signals();
  78 }
  79
  80 void Control::reset_edges()
  81 {
  82         rising_edge = false;
  83         falling_edge = false;
  84 }
  85
  86 void Control::connect_signals()
  87 {
  88         switch(src.type)
  89         {
  90         case NO_SOURCE:
  91                 break;
  92         case BUTTON:
  93                 src.dev->signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &Control::button_press), false));
  94                 src.dev->signal_button_release.connect(sigc::bind_return(sigc::mem_fun(this, &Control::button_release), false));
  95                 break;
  96         case AXIS_POS:
  97         case AXIS_NEG:
  98                 src.dev->signal_axis_motion.connect(sigc::bind_return(sigc::mem_fun(this, &Control::axis_motion), false));
  99                 break;
 100         }
 101
 102         if(activator)
 103                 activator->signal_release.connect(sigc::mem_fun(this, &Control::deactivate));
 104 }
 105
 106 void Control::button_press(unsigned i)
 107 {
 108         if(capture_dev)
 109         {
 110                 src.dev = capture_dev;
 111                 src.type = BUTTON;
 112                 src.index = i;
 113
 114                 notify_callbacks();
 115                 capture_dev = 0;
 116                 connect_signals();
 117                 signal_capture_complete.emit();
 118         }
 119         else if(src.type==BUTTON && i==src.index && (!activator || activator->get_state()))
 120                 on_press();
 121 }
 122
 123 void Control::button_release(unsigned i)
 124 {
 125         if(src.type==BUTTON && i==src.index && (!activator || activator->get_state()))
 126                 on_release();
 127 }
 128
 129 void Control::axis_motion(unsigned i, float v, float r)
 130 {
 131         if(capture_dev)
 132         {
 133                 ControlSrcType type = NO_SOURCE;
 134                 if(v<-0.9)
 135                         type = AXIS_NEG;
 136                 else if(v>0.9)
 137                         type = AXIS_POS;
 138
 139                 if(type!=NO_SOURCE)
 140                 {
 141                         src.dev = capture_dev;
 142                         src.type = type;
 143                         src.index = i;
 144
 145                         notify_callbacks();
 146                         capture_dev = 0;
 147                         connect_signals();
 148                         signal_capture_complete.emit();
 149                 }
 150         }
 151         else if(activator && !activator->get_state() && i==src.index)
 152                 origin = v;
 153         else if(src.type==AXIS_POS && i==src.index && v>=origin)
 154                 on_motion(v-origin, r);
 155         else if(src.type==AXIS_NEG && i==src.index && v<=origin)
 156                 on_motion(origin-v, -r);
 157 }
 158
 159 void Control::deactivate()
 160 {
 161         if(src.type==BUTTON)
 162                 on_release();
 163         else if(src.type==AXIS_POS || src.type==AXIS_NEG)
 164         {
 165                 float v = src.dev->get_axis_value(src.index);
 166                 on_motion(0, (src.type==AXIS_POS ? origin-v : v-origin));
 167                 origin = v;
 168         }
 169 }
 170
 171 } // namespace Input
 172 } // namespace Msp