source/graphics/windows/display.cpp

   1 #include <windows.h>
   2 #include "display.h"
   3 #include "display_private.h"
   4
   5 using namespace std;
   6
   7 namespace Msp {
   8 namespace Graphics {
   9
  10 Display::Display(const string &):
  11         primary_monitor(0),
  12         priv(new Private)
  13 {
  14         for(unsigned i=0;; ++i)
  15         {
  16                 DISPLAY_DEVICE adapter_dev;
  17                 adapter_dev.cb = sizeof(adapter_dev);
  18                 if(!EnumDisplayDevices(0, i, &adapter_dev, 0))
  19                         break;
  20
  21                 if(adapter_dev.StateFlags&DISPLAY_DEVICE_MIRRORING_DRIVER)
  22                         continue;
  23
  24                 monitors.push_back(Monitor());
  25                 Monitor &monitor = monitors.back();
  26                 monitor.index = monitors.size()-1;
  27                 priv->monitors.push_back(adapter_dev.DeviceName);
  28
  29                 if(adapter_dev.StateFlags&DISPLAY_DEVICE_PRIMARY_DEVICE)
  30                         primary_monitor = &monitor;
  31
  32                 DEVMODE current;
  33                 bool have_current = EnumDisplaySettings(adapter_dev.DeviceName, ENUM_CURRENT_SETTINGS, &current);
  34
  35                 for(unsigned j=0;; ++j)
  36                 {
  37                         DEVMODE info;
  38                         if(!EnumDisplaySettings(adapter_dev.DeviceName, j, &info))
  39                                 break;
  40
  41                         VideoMode mode(info.dmPelsWidth, info.dmPelsHeight);
  42                         mode.index = modes.size();
  43                         mode.monitor = &monitor;
  44                         mode.rate = info.dmDisplayFrequency;
  45                         if(find_matching_mode(mode))
  46                                 continue;
  47
  48                         modes.push_back(mode);
  49                         monitor.video_modes.push_back(&modes.back());
  50
  51                         if(have_current && info.dmPelsWidth==current.dmPelsWidth && info.dmPelsHeight==current.dmPelsHeight && info.dmDisplayFrequency==current.dmDisplayFrequency)
  52                                 monitor.desktop_mode = &modes.back();
  53                 }
  54         }
  55 }
  56
  57 Display::~Display()
  58 {
  59 }
  60
  61 void Display::set_mode(const VideoMode &requested_mode, bool)
  62 {
  63         const VideoMode *mode = find_matching_mode(requested_mode);
  64         if(!mode)
  65                 throw unsupported_video_mode(requested_mode);
  66
  67         DEVMODE info;
  68         info.dmSize = sizeof(DEVMODE);
  69         info.dmFields = DM_PELSWIDTH|DM_PELSHEIGHT;
  70         info.dmPelsWidth = mode->width;
  71         info.dmPelsHeight = mode->height;
  72         if(requested_mode.rate)
  73         {
  74                 info.dmFields |= DM_DISPLAYFREQUENCY;
  75                 info.dmDisplayFrequency = mode->rate;
  76         }
  77
  78         LONG ret = ChangeDisplaySettingsEx(priv->monitors[mode->monitor->index].c_str(), &info, NULL, CDS_FULLSCREEN, NULL);
  79         if(ret!=DISP_CHANGE_SUCCESSFUL)
  80                 throw unsupported_video_mode(requested_mode);
  81
  82         for(list<Monitor>::iterator i=monitors.begin(); i!=monitors.end(); ++i)
  83                 if(&*i==mode->monitor)
  84                         i->current_mode = mode;
  85 }
  86
  87 bool Display::process_events()
  88 {
  89         MSG msg;
  90         if(PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
  91         {
  92                 DispatchMessage(&msg);
  93                 return true;
  94         }
  95         else
  96                 return false;
  97 }
  98
  99 void Display::check_error()
 100 {
 101 }
 102
 103 } // namespace Msp
 104 } // namespace Graphics