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         static ErrorDialog err_dlg(0);
  15
  16         for(unsigned i=0;; ++i)
  17         {
  18                 DISPLAY_DEVICE adapter_dev;
  19                 adapter_dev.cb = sizeof(adapter_dev);
  20                 if(!EnumDisplayDevices(0, i, &adapter_dev, 0))
  21                         break;
  22
  23                 if(adapter_dev.StateFlags&DISPLAY_DEVICE_MIRRORING_DRIVER)
  24                         continue;
  25
  26                 monitors.push_back(Monitor());
  27                 Monitor &monitor = monitors.back();
  28                 monitor.index = monitors.size()-1;
  29                 priv->monitors.push_back(adapter_dev.DeviceName);
  30
  31                 if(adapter_dev.StateFlags&DISPLAY_DEVICE_PRIMARY_DEVICE)
  32                         primary_monitor = &monitor;
  33
  34                 DEVMODE current;
  35                 bool have_current = EnumDisplaySettings(adapter_dev.DeviceName, ENUM_CURRENT_SETTINGS, &current);
  36
  37                 for(unsigned j=0;; ++j)
  38                 {
  39                         DEVMODE info;
  40                         if(!EnumDisplaySettings(adapter_dev.DeviceName, j, &info))
  41                                 break;
  42
  43                         VideoMode mode(info.dmPelsWidth, info.dmPelsHeight);
  44                         mode.index = modes.size();
  45                         mode.monitor = &monitor;
  46                         mode.rate = info.dmDisplayFrequency;
  47                         if(find_mode(mode))
  48                                 continue;
  49
  50                         modes.push_back(mode);
  51                         monitor.video_modes.push_back(&modes.back());
  52
  53                         if(have_current && info.dmPelsWidth==current.dmPelsWidth && info.dmPelsHeight==current.dmPelsHeight && info.dmDisplayFrequency==current.dmDisplayFrequency)
  54                                 monitor.desktop_mode = &modes.back();
  55                 }
  56         }
  57 }
  58
  59 Display::~Display()
  60 {
  61 }
  62
  63 void Display::set_mode(const VideoMode &requested_mode, bool)
  64 {
  65         const VideoMode *mode = find_mode(requested_mode);
  66         if(!mode)
  67                 throw unsupported_video_mode(requested_mode);
  68
  69         DEVMODE info;
  70         info.dmDeviceName[0] = 0;
  71         info.dmSpecVersion = DM_SPECVERSION;
  72         info.dmDriverVersion = 0;
  73         info.dmSize = sizeof(DEVMODE);
  74         info.dmDriverExtra = 0;
  75         info.dmFields = DM_PELSWIDTH|DM_PELSHEIGHT;
  76         info.dmPelsWidth = mode->width;
  77         info.dmPelsHeight = mode->height;
  78         if(requested_mode.rate)
  79         {
  80                 info.dmFields |= DM_DISPLAYFREQUENCY;
  81                 info.dmDisplayFrequency = mode->rate;
  82         }
  83
  84         LONG ret = ChangeDisplaySettingsEx(priv->monitors[mode->monitor->index].c_str(), &info, NULL, CDS_FULLSCREEN, NULL);
  85         if(ret!=DISP_CHANGE_SUCCESSFUL)
  86                 throw unsupported_video_mode(requested_mode);
  87
  88         for(list<Monitor>::iterator i=monitors.begin(); i!=monitors.end(); ++i)
  89                 if(&*i==mode->monitor)
  90                         i->current_mode = mode;
  91 }
  92
  93 bool Display::process_events()
  94 {
  95         MSG msg;
  96         if(PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
  97         {
  98                 DispatchMessage(&msg);
  99                 return true;
 100         }
 101         else
 102                 return false;
 103 }
 104
 105 void Display::check_error()
 106 {
 107 }
 108
 109 } // namespace Msp
 110 } // namespace Graphics