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         focus_window(0)
  14 {
  15         static ErrorDialog err_dlg(0);
  16
  17         for(unsigned i=0;; ++i)
  18         {
  19                 DISPLAY_DEVICE adapter_dev;
  20                 adapter_dev.cb = sizeof(adapter_dev);
  21                 if(!EnumDisplayDevices(0, i, &adapter_dev, 0))
  22                         break;
  23
  24                 if(adapter_dev.StateFlags&DISPLAY_DEVICE_MIRRORING_DRIVER)
  25                         continue;
  26
  27                 monitors.push_back(Monitor());
  28                 Monitor &monitor = monitors.back();
  29                 monitor.index = monitors.size()-1;
  30                 monitor.name = adapter_dev.DeviceString;
  31                 priv->monitors.push_back(adapter_dev.DeviceName);
  32
  33                 if(adapter_dev.StateFlags&DISPLAY_DEVICE_PRIMARY_DEVICE)
  34                         primary_monitor = &monitor;
  35
  36                 DEVMODE current;
  37                 bool have_current = EnumDisplaySettings(adapter_dev.DeviceName, ENUM_CURRENT_SETTINGS, &current);
  38
  39                 for(unsigned j=0;; ++j)
  40                 {
  41                         DEVMODE info;
  42                         if(!EnumDisplaySettings(adapter_dev.DeviceName, j, &info))
  43                                 break;
  44
  45                         VideoMode mode(info.dmPelsWidth, info.dmPelsHeight);
  46                         mode.index = modes.size();
  47                         mode.monitor = &monitor;
  48                         mode.rate = info.dmDisplayFrequency;
  49                         if(find_mode(mode))
  50                                 continue;
  51
  52                         modes.push_back(mode);
  53                         monitor.video_modes.push_back(&modes.back());
  54
  55                         if(have_current && info.dmPelsWidth==current.dmPelsWidth && info.dmPelsHeight==current.dmPelsHeight && info.dmDisplayFrequency==current.dmDisplayFrequency)
  56                                 monitor.desktop_settings.mode = &modes.back();
  57                 }
  58         }
  59 }
  60
  61 Display::~Display()
  62 {
  63 }
  64
  65 void Display::set_mode(const VideoMode &requested_mode, bool)
  66 {
  67         const VideoMode *mode = find_mode(requested_mode);
  68         if(!mode)
  69                 throw unsupported_video_mode(requested_mode);
  70
  71         DEVMODE info;
  72         info.dmDeviceName[0] = 0;
  73         info.dmSpecVersion = DM_SPECVERSION;
  74         info.dmDriverVersion = 0;
  75         info.dmSize = sizeof(DEVMODE);
  76         info.dmDriverExtra = 0;
  77         info.dmFields = DM_PELSWIDTH|DM_PELSHEIGHT;
  78         info.dmPelsWidth = mode->width;
  79         info.dmPelsHeight = mode->height;
  80         if(requested_mode.rate)
  81         {
  82                 info.dmFields |= DM_DISPLAYFREQUENCY;
  83                 info.dmDisplayFrequency = mode->rate;
  84         }
  85
  86         LONG ret = ChangeDisplaySettingsEx(priv->monitors[mode->monitor->index].c_str(), &info, NULL, CDS_FULLSCREEN, NULL);
  87         if(ret!=DISP_CHANGE_SUCCESSFUL)
  88                 throw unsupported_video_mode(requested_mode);
  89
  90         for(list<Monitor>::iterator i=monitors.begin(); i!=monitors.end(); ++i)
  91                 if(&*i==mode->monitor)
  92                         i->current_settings.mode = mode;
  93 }
  94
  95 bool Display::process_events()
  96 {
  97         MSG msg;
  98         if(PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
  99         {
 100                 TranslateMessage(&msg);
 101                 DispatchMessage(&msg);
 102                 return true;
 103         }
 104         else
 105                 return false;
 106 }
 107
 108 void Display::check_error()
 109 {
 110 }
 111
 112 } // namespace Msp
 113 } // namespace Graphics