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.monitor = &monitor;
  43                         mode.rate = info.dmDisplayFrequency;
  44                         if(find_matching_mode(mode))
  45                                 continue;
  46
  47                         modes.push_back(mode);
  48                         monitor.video_modes.push_back(&modes.back());
  49
  50                         if(have_current && info.dmPelsWidth==current.dmPelsWidth && info.dmPelsHeight==current.dmPelsHeight && info.dmDisplayFrequency==current.dmDisplayFrequency)
  51                                 monitor.desktop_mode = &modes.back();
  52                 }
  53         }
  54 }
  55
  56 Display::~Display()
  57 {
  58 }
  59
  60 void Display::set_mode(const VideoMode &requested_mode, bool)
  61 {
  62         const VideoMode *mode = find_matching_mode(requested_mode);
  63         if(!mode)
  64                 throw unsupported_video_mode(requested_mode);
  65
  66         DEVMODE info;
  67         info.dmSize = sizeof(DEVMODE);
  68         info.dmFields = DM_PELSWIDTH|DM_PELSHEIGHT;
  69         info.dmPelsWidth = mode->width;
  70         info.dmPelsHeight = mode->height;
  71         if(requested_mode.rate)
  72         {
  73                 info.dmFields |= DM_DISPLAYFREQUENCY;
  74                 info.dmDisplayFrequency = mode->rate;
  75         }
  76
  77         LONG ret = ChangeDisplaySettingsEx(priv->monitors[mode->monitor->index].c_str(), &info, NULL, CDS_FULLSCREEN, NULL);
  78         if(ret!=DISP_CHANGE_SUCCESSFUL)
  79                 throw unsupported_video_mode(requested_mode);
  80 }
  81
  82 bool Display::process_events()
  83 {
  84         MSG msg;
  85         if(PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
  86         {
  87                 DispatchMessage(&msg);
  88                 return true;
  89         }
  90         else
  91                 return false;
  92 }
  93
  94 void Display::check_error()
  95 {
  96 }
  97
  98 } // namespace Msp
  99 } // namespace Graphics