source/input/touchscreen.cpp

   1 #include "touchscreen.h"
   2
   3 using namespace std;
   4
   5 namespace Msp {
   6 namespace Input {
   7
   8 Touchscreen::Touchscreen(Graphics::Window &w):
   9         window(w)
  10 {
  11         name = "Touchscreen";
  12
  13         window.set_touch_input(true);
  14         window.signal_input_event.connect(sigc::mem_fun(this, &Touchscreen::input_event));
  15 }
  16
  17 Touchscreen::~Touchscreen()
  18 {
  19         window.set_touch_input(false);
  20 }
  21
  22 string Touchscreen::get_button_name(unsigned btn) const
  23 {
  24         if(btn==0)
  25                 return "Primary touch";
  26         else
  27                 return Device::get_button_name(btn);
  28 }
  29
  30 string Touchscreen::get_axis_name(unsigned axis) const
  31 {
  32         if(axis==0)
  33                 return "Primary touch X";
  34         else if(axis==1)
  35                 return "Primary touch Y";
  36         else
  37                 return Device::get_axis_name(axis);
  38 }
  39
  40 unsigned Touchscreen::map_point_id(unsigned id)
  41 {
  42         unsigned unused = active_points.size();
  43         for(unsigned i=0; i<active_points.size(); ++i)
  44         {
  45                 if(active_points[i]==id)
  46                         return i;
  47                 else if(active_points[i]==UNUSED && i<unused)
  48                         unused = i;
  49         }
  50
  51         if(unused<active_points.size())
  52                 active_points[unused] = id;
  53         else
  54                 active_points.push_back(id);
  55
  56         return unused;
  57 }
  58
  59 void Touchscreen::touch_down(unsigned id)
  60 {
  61         unsigned i = map_point_id(id);
  62         set_button_state(i, true, true);
  63 }
  64
  65 void Touchscreen::touch_move(unsigned id, float x, float y)
  66 {
  67         unsigned i = map_point_id(id);
  68         set_axis_value(i*2, x, true);
  69         set_axis_value(i*2+1, y, true);
  70 }
  71
  72 void Touchscreen::touch_up(unsigned id)
  73 {
  74         unsigned i = map_point_id(id);
  75         set_button_state(i, true, false);
  76         active_points[i] = UNUSED;
  77 }
  78
  79 } // namespace Input
  80 } // namespace Msp