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