windows/multimon.c

   1 /*
   2  * Multimonitor APIs
   3  *
   4  * Copyright 1998 Turchanov Sergey
   5  */
   6
   7 #include "monitor.h"
   8 #include "windef.h"
   9 #include "wingdi.h"
  10 #include "winbase.h"
  11 #include "winuser.h"
  12
  13 /**********************************************************************/
  14
  15 MONITOR_DRIVER *MONITOR_Driver;
  16
  17 /**********************************************************************/
  18
  19 #define xPRIMARY_MONITOR ((HMONITOR)0x12340042)
  20
  21 MONITOR MONITOR_PrimaryMonitor;
  22
  23 /***********************************************************************
  24  *              MONITOR_GetMonitor
  25  */
  26 #if 0
  27 static MONITOR *MONITOR_GetMonitor(HMONITOR hMonitor)
  28 {
  29   if(hMonitor == xPRIMARY_MONITOR)
  30     {
  31       return &MONITOR_PrimaryMonitor;
  32     }
  33   else
  34     {
  35       return NULL;
  36     }
  37 }
  38 #endif
  39
  40 /***********************************************************************
  41  *              MONITOR_Initialize
  42  */
  43 void MONITOR_Initialize(MONITOR *pMonitor)
  44 {
  45   MONITOR_Driver->pInitialize(pMonitor);
  46 }
  47
  48 /***********************************************************************
  49  *              MONITOR_Finalize
  50  */
  51 void MONITOR_Finalize(MONITOR *pMonitor)
  52 {
  53   MONITOR_Driver->pFinalize(pMonitor);
  54 }
  55
  56 /***********************************************************************
  57  *              MONITOR_IsSingleWindow
  58  */
  59 BOOL MONITOR_IsSingleWindow(MONITOR *pMonitor)
  60 {
  61   return MONITOR_Driver->pIsSingleWindow(pMonitor);
  62 }
  63
  64 /***********************************************************************
  65  *              MONITOR_GetWidth
  66  */
  67 int MONITOR_GetWidth(MONITOR *pMonitor)
  68 {
  69   return MONITOR_Driver->pGetWidth(pMonitor);
  70 }
  71
  72 /***********************************************************************
  73  *              MONITOR_GetHeight
  74  */
  75 int MONITOR_GetHeight(MONITOR *pMonitor)
  76 {
  77   return MONITOR_Driver->pGetHeight(pMonitor);
  78 }
  79
  80 /***********************************************************************
  81  *              MONITOR_GetDepth
  82  */
  83 int MONITOR_GetDepth(MONITOR *pMonitor)
  84 {
  85   return MONITOR_Driver->pGetDepth(pMonitor);
  86 }
  87
  88 /***********************************************************************
  89  *              MONITOR_GetScreenSaveActive
  90  */
  91 BOOL MONITOR_GetScreenSaveActive(MONITOR *pMonitor)
  92 {
  93   return MONITOR_Driver->pGetScreenSaveActive(pMonitor);
  94 }
  95
  96 /***********************************************************************
  97  *              MONITOR_SetScreenSaveActive
  98  */
  99 void MONITOR_SetScreenSaveActive(MONITOR *pMonitor, BOOL bActivate)
 100 {
 101   MONITOR_Driver->pSetScreenSaveActive(pMonitor, bActivate);
 102 }
 103
 104 /***********************************************************************
 105  *              MONITOR_GetScreenSaveTimeout
 106  */
 107 int MONITOR_GetScreenSaveTimeout(MONITOR *pMonitor)
 108 {
 109   return MONITOR_Driver->pGetScreenSaveTimeout(pMonitor);
 110 }
 111
 112 /***********************************************************************
 113  *              MONITOR_SetScreenSaveTimeout
 114  */
 115 void MONITOR_SetScreenSaveTimeout(MONITOR *pMonitor, int nTimeout)
 116 {
 117   MONITOR_Driver->pSetScreenSaveTimeout(pMonitor, nTimeout);
 118 }
 119
 120
 121 /**********************************************************************/
 122
 123 HMONITOR WINAPI MonitorFromPoint(POINT ptScreenCoords, DWORD dwFlags)
 124 {
 125     if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
 126         ((ptScreenCoords.x >= 0) &&
 127         (ptScreenCoords.x < GetSystemMetrics(SM_CXSCREEN)) &&
 128         (ptScreenCoords.y >= 0) &&
 129         (ptScreenCoords.y < GetSystemMetrics(SM_CYSCREEN))))
 130     {
 131         return xPRIMARY_MONITOR;
 132     }
 133         return NULL;
 134 }
 135
 136 HMONITOR WINAPI MonitorFromRect(LPRECT lprcScreenCoords, DWORD dwFlags)
 137 {
 138     if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
 139         ((lprcScreenCoords->right > 0) &&
 140         (lprcScreenCoords->bottom > 0) &&
 141         (lprcScreenCoords->left < GetSystemMetrics(SM_CXSCREEN)) &&
 142         (lprcScreenCoords->top < GetSystemMetrics(SM_CYSCREEN))))
 143     {
 144         return xPRIMARY_MONITOR;
 145     }
 146     return NULL;
 147 }
 148
 149 HMONITOR WINAPI MonitorFromWindow(HWND hWnd, DWORD dwFlags)
 150 {
 151     WINDOWPLACEMENT wp;
 152
 153     if (dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST))
 154         return xPRIMARY_MONITOR;
 155
 156     if (IsIconic(hWnd) ?
 157             GetWindowPlacement(hWnd, &wp) :
 158             GetWindowRect(hWnd, &wp.rcNormalPosition)) {
 159
 160         return MonitorFromRect(&wp.rcNormalPosition, dwFlags);
 161     }
 162
 163     return NULL;
 164 }
 165
 166 BOOL WINAPI GetMonitorInfoA(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
 167 {
 168     RECT rcWork;
 169
 170     if ((hMonitor == xPRIMARY_MONITOR) &&
 171         lpMonitorInfo &&
 172         (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
 173         SystemParametersInfoA(SPI_GETWORKAREA, 0, &rcWork, 0))
 174     {
 175         lpMonitorInfo->rcMonitor.left = 0;
 176         lpMonitorInfo->rcMonitor.top  = 0;
 177         lpMonitorInfo->rcMonitor.right  = GetSystemMetrics(SM_CXSCREEN);
 178         lpMonitorInfo->rcMonitor.bottom = GetSystemMetrics(SM_CYSCREEN);
 179         lpMonitorInfo->rcWork = rcWork;
 180         lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
 181
 182         if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEXA))
 183             lstrcpyA(((MONITORINFOEXA*)lpMonitorInfo)->szDevice, "DISPLAY");
 184
 185         return TRUE;
 186     }
 187
 188     return FALSE;
 189 }
 190
 191 BOOL WINAPI GetMonitorInfoW(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
 192 {
 193     RECT rcWork;
 194
 195     if ((hMonitor == xPRIMARY_MONITOR) &&
 196         lpMonitorInfo &&
 197         (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
 198         SystemParametersInfoW(SPI_GETWORKAREA, 0, &rcWork, 0))
 199     {
 200         lpMonitorInfo->rcMonitor.left = 0;
 201         lpMonitorInfo->rcMonitor.top  = 0;
 202         lpMonitorInfo->rcMonitor.right  = GetSystemMetrics(SM_CXSCREEN);
 203         lpMonitorInfo->rcMonitor.bottom = GetSystemMetrics(SM_CYSCREEN);
 204         lpMonitorInfo->rcWork = rcWork;
 205         lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
 206
 207         if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEXW))
 208             lstrcpyW(((MONITORINFOEXW*)lpMonitorInfo)->szDevice, (LPCWSTR)"D\0I\0S\0P\0L\0A\0Y\0\0");
 209
 210         return TRUE;
 211     }
 212
 213     return FALSE;
 214 }
 215
 216 BOOL WINAPI EnumDisplayMonitors(
 217         HDC             hdcOptionalForPainting,
 218         LPRECT         lprcEnumMonitorsThatIntersect,
 219         MONITORENUMPROC lpfnEnumProc,
 220         LPARAM          dwData)
 221 {
 222     RECT rcLimit;
 223
 224     if (!lpfnEnumProc)
 225         return FALSE;
 226
 227     rcLimit.left   = 0;
 228     rcLimit.top    = 0;
 229     rcLimit.right  = GetSystemMetrics(SM_CXSCREEN);
 230     rcLimit.bottom = GetSystemMetrics(SM_CYSCREEN);
 231
 232     if (hdcOptionalForPainting)
 233     {
 234         RECT    rcClip;
 235         POINT   ptOrg;
 236
 237         switch (GetClipBox(hdcOptionalForPainting, &rcClip))
 238         {
 239         default:
 240             if (!GetDCOrgEx(hdcOptionalForPainting, &ptOrg))
 241                 return FALSE;
 242
 243             OffsetRect(&rcLimit, -ptOrg.x, -ptOrg.y);
 244             if (IntersectRect(&rcLimit, &rcLimit, &rcClip) &&
 245                 (!lprcEnumMonitorsThatIntersect ||
 246                      IntersectRect(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect))) {
 247
 248                 break;
 249             }
 250             /*fall thru */
 251         case NULLREGION:
 252              return TRUE;
 253         case ERROR:
 254              return FALSE;
 255         }
 256     } else {
 257         if (    lprcEnumMonitorsThatIntersect &&
 258                 !IntersectRect(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect)) {
 259
 260             return TRUE;
 261         }
 262     }
 263
 264     return lpfnEnumProc(
 265             xPRIMARY_MONITOR,
 266             hdcOptionalForPainting,
 267             &rcLimit,
 268             dwData);
 269 }