windows/multimon.c

   1 /*
   2  * Multimonitor APIs
   3  *
   4  * Copyright 1998 Turchanov Sergey
   5  */
   6
   7 #include "monitor.h"
   8 #include "windows.h"
   9
  10 /**********************************************************************/
  11
  12 #define xPRIMARY_MONITOR ((HMONITOR)0x12340042)
  13
  14 MONITOR MONITOR_PrimaryMonitor;
  15
  16 /***********************************************************************
  17  *              MONITOR_Initialize
  18  */
  19 void MONITOR_Initialize(MONITOR *pMonitor)
  20 {
  21   pMonitor->pDriver->pInitialize(pMonitor);
  22 }
  23
  24 /***********************************************************************
  25  *              MONITOR_Finalize
  26  */
  27 void MONITOR_Finalize(MONITOR *pMonitor)
  28 {
  29   pMonitor->pDriver->pFinalize(pMonitor);
  30 }
  31
  32 /***********************************************************************
  33  *              MONITOR_GetWidth
  34  */
  35 int MONITOR_GetWidth(MONITOR *pMonitor)
  36 {
  37   return pMonitor->pDriver->pGetWidth(pMonitor);
  38 }
  39
  40 /***********************************************************************
  41  *              MONITOR_GetHeight
  42  */
  43 int MONITOR_GetHeight(MONITOR *pMonitor)
  44 {
  45   return pMonitor->pDriver->pGetHeight(pMonitor);
  46 }
  47
  48 /***********************************************************************
  49  *              MONITOR_GetDepth
  50  */
  51 int MONITOR_GetDepth(MONITOR *pMonitor)
  52 {
  53   return pMonitor->pDriver->pGetDepth(pMonitor);
  54 }
  55
  56 /**********************************************************************/
  57
  58 HMONITOR WINAPI MonitorFromPoint(POINT32 ptScreenCoords, DWORD dwFlags)
  59 {
  60     if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
  61         ((ptScreenCoords.x >= 0) &&
  62         (ptScreenCoords.x < GetSystemMetrics32(SM_CXSCREEN)) &&
  63         (ptScreenCoords.y >= 0) &&
  64         (ptScreenCoords.y < GetSystemMetrics32(SM_CYSCREEN))))
  65     {
  66         return xPRIMARY_MONITOR;
  67     }
  68         return NULL;
  69 }
  70
  71 HMONITOR WINAPI MonitorFromRect(LPRECT32 lprcScreenCoords, DWORD dwFlags)
  72 {
  73     if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
  74         ((lprcScreenCoords->right > 0) &&
  75         (lprcScreenCoords->bottom > 0) &&
  76         (lprcScreenCoords->left < GetSystemMetrics32(SM_CXSCREEN)) &&
  77         (lprcScreenCoords->top < GetSystemMetrics32(SM_CYSCREEN))))
  78     {
  79         return xPRIMARY_MONITOR;
  80     }
  81     return NULL;
  82 }
  83
  84 HMONITOR WINAPI MonitorFromWindow(HWND32 hWnd, DWORD dwFlags)
  85 {
  86     WINDOWPLACEMENT32 wp;
  87
  88     if (dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST))
  89         return xPRIMARY_MONITOR;
  90
  91     if (IsIconic32(hWnd) ?
  92             GetWindowPlacement32(hWnd, &wp) :
  93             GetWindowRect32(hWnd, &wp.rcNormalPosition)) {
  94
  95         return MonitorFromRect(&wp.rcNormalPosition, dwFlags);
  96     }
  97
  98     return NULL;
  99 }
 100
 101 BOOL32 WINAPI GetMonitorInfo32A(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
 102 {
 103     RECT32 rcWork;
 104
 105     if ((hMonitor == xPRIMARY_MONITOR) &&
 106         lpMonitorInfo &&
 107         (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
 108         SystemParametersInfo32A(SPI_GETWORKAREA, 0, &rcWork, 0))
 109     {
 110         lpMonitorInfo->rcMonitor.left = 0;
 111         lpMonitorInfo->rcMonitor.top  = 0;
 112         lpMonitorInfo->rcMonitor.right  = GetSystemMetrics32(SM_CXSCREEN);
 113         lpMonitorInfo->rcMonitor.bottom = GetSystemMetrics32(SM_CYSCREEN);
 114         lpMonitorInfo->rcWork = rcWork;
 115         lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
 116
 117         if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEX32A))
 118             lstrcpy32A(((MONITORINFOEX32A*)lpMonitorInfo)->szDevice, "DISPLAY");
 119
 120         return TRUE;
 121     }
 122
 123     return FALSE;
 124 }
 125
 126 BOOL32 WINAPI GetMonitorInfo32W(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
 127 {
 128     RECT32 rcWork;
 129
 130     if ((hMonitor == xPRIMARY_MONITOR) &&
 131         lpMonitorInfo &&
 132         (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
 133         SystemParametersInfo32W(SPI_GETWORKAREA, 0, &rcWork, 0))
 134     {
 135         lpMonitorInfo->rcMonitor.left = 0;
 136         lpMonitorInfo->rcMonitor.top  = 0;
 137         lpMonitorInfo->rcMonitor.right  = GetSystemMetrics32(SM_CXSCREEN);
 138         lpMonitorInfo->rcMonitor.bottom = GetSystemMetrics32(SM_CYSCREEN);
 139         lpMonitorInfo->rcWork = rcWork;
 140         lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
 141
 142         if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEX32W))
 143             lstrcpy32W(((MONITORINFOEX32W*)lpMonitorInfo)->szDevice, (LPCWSTR)"D\0I\0S\0P\0L\0A\0Y\0\0");
 144
 145         return TRUE;
 146     }
 147
 148     return FALSE;
 149 }
 150
 151 BOOL32 WINAPI EnumDisplayMonitors(
 152         HDC32             hdcOptionalForPainting,
 153         LPRECT32         lprcEnumMonitorsThatIntersect,
 154         MONITORENUMPROC lpfnEnumProc,
 155         LPARAM          dwData)
 156 {
 157     RECT32 rcLimit;
 158
 159     if (!lpfnEnumProc)
 160         return FALSE;
 161
 162     rcLimit.left   = 0;
 163     rcLimit.top    = 0;
 164     rcLimit.right  = GetSystemMetrics32(SM_CXSCREEN);
 165     rcLimit.bottom = GetSystemMetrics32(SM_CYSCREEN);
 166
 167     if (hdcOptionalForPainting)
 168     {
 169         RECT32    rcClip;
 170         POINT32   ptOrg;
 171
 172         switch (GetClipBox32(hdcOptionalForPainting, &rcClip))
 173         {
 174         default:
 175             if (!GetDCOrgEx(hdcOptionalForPainting, &ptOrg))
 176                 return FALSE;
 177
 178             OffsetRect32(&rcLimit, -ptOrg.x, -ptOrg.y);
 179             if (IntersectRect32(&rcLimit, &rcLimit, &rcClip) &&
 180                 (!lprcEnumMonitorsThatIntersect ||
 181                      IntersectRect32(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect))) {
 182
 183                 break;
 184             }
 185             /*fall thru */
 186         case NULLREGION:
 187              return TRUE;
 188         case ERROR:
 189              return FALSE;
 190         }
 191     } else {
 192         if (    lprcEnumMonitorsThatIntersect &&
 193                 !IntersectRect32(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect)) {
 194
 195             return TRUE;
 196         }
 197     }
 198
 199     return lpfnEnumProc(
 200             xPRIMARY_MONITOR,
 201             hdcOptionalForPainting,
 202             &rcLimit,
 203             dwData);
 204 }