windows/multimon.c

   1 /*
   2  * Multimonitor APIs
   3  *
   4  * Copyright 1998 Turchanov Sergey
   5  */
   6
   7 #include <string.h>
   8 #include "windef.h"
   9 #include "wingdi.h"
  10 #include "winbase.h"
  11 #include "winuser.h"
  12 #include "wine/unicode.h"
  13
  14 /**********************************************************************/
  15
  16 #define xPRIMARY_MONITOR ((HMONITOR)0x12340042)
  17
  18 /***********************************************************************
  19  *              MonitorFromPoint (USER32.@)
  20  */
  21 HMONITOR WINAPI MonitorFromPoint(POINT ptScreenCoords, DWORD dwFlags)
  22 {
  23     if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
  24         ((ptScreenCoords.x >= 0) &&
  25         (ptScreenCoords.x < GetSystemMetrics(SM_CXSCREEN)) &&
  26         (ptScreenCoords.y >= 0) &&
  27         (ptScreenCoords.y < GetSystemMetrics(SM_CYSCREEN))))
  28     {
  29         return xPRIMARY_MONITOR;
  30     }
  31     return (HMONITOR)0;
  32 }
  33
  34 /***********************************************************************
  35  *              MonitorFromRect (USER32.@)
  36  */
  37 HMONITOR WINAPI MonitorFromRect(LPRECT lprcScreenCoords, DWORD dwFlags)
  38 {
  39     if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
  40         ((lprcScreenCoords->right > 0) &&
  41         (lprcScreenCoords->bottom > 0) &&
  42         (lprcScreenCoords->left < GetSystemMetrics(SM_CXSCREEN)) &&
  43         (lprcScreenCoords->top < GetSystemMetrics(SM_CYSCREEN))))
  44     {
  45         return xPRIMARY_MONITOR;
  46     }
  47     return (HMONITOR)0;
  48 }
  49
  50 /***********************************************************************
  51  *              MonitorFromWindow (USER32.@)
  52  */
  53 HMONITOR WINAPI MonitorFromWindow(HWND hWnd, DWORD dwFlags)
  54 {
  55     WINDOWPLACEMENT wp;
  56
  57     if (dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST))
  58         return xPRIMARY_MONITOR;
  59
  60     if (IsIconic(hWnd) ?
  61             GetWindowPlacement(hWnd, &wp) :
  62             GetWindowRect(hWnd, &wp.rcNormalPosition)) {
  63
  64         return MonitorFromRect(&wp.rcNormalPosition, dwFlags);
  65     }
  66
  67     return (HMONITOR)0;
  68 }
  69
  70 /***********************************************************************
  71  *              GetMonitorInfoA (USER32.@)
  72  */
  73 BOOL WINAPI GetMonitorInfoA(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
  74 {
  75     RECT rcWork;
  76
  77     if ((hMonitor == xPRIMARY_MONITOR) &&
  78         lpMonitorInfo &&
  79         (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
  80         SystemParametersInfoA(SPI_GETWORKAREA, 0, &rcWork, 0))
  81     {
  82         SetRect( &lpMonitorInfo->rcMonitor, 0, 0,
  83                  GetSystemMetrics(SM_CXSCREEN),
  84                  GetSystemMetrics(SM_CYSCREEN) );
  85         lpMonitorInfo->rcWork = rcWork;
  86         lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
  87
  88         if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEXA))
  89             strcpy(((MONITORINFOEXA*)lpMonitorInfo)->szDevice, "DISPLAY");
  90
  91         return TRUE;
  92     }
  93
  94     return FALSE;
  95 }
  96
  97 /***********************************************************************
  98  *              GetMonitorInfoW (USER32.@)
  99  */
 100 BOOL WINAPI GetMonitorInfoW(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
 101 {
 102     RECT rcWork;
 103
 104     if ((hMonitor == xPRIMARY_MONITOR) &&
 105         lpMonitorInfo &&
 106         (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
 107         SystemParametersInfoW(SPI_GETWORKAREA, 0, &rcWork, 0))
 108     {
 109         SetRect( &lpMonitorInfo->rcMonitor, 0, 0,
 110                  GetSystemMetrics(SM_CXSCREEN),
 111                  GetSystemMetrics(SM_CYSCREEN) );
 112         lpMonitorInfo->rcWork = rcWork;
 113         lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
 114
 115         if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEXW))
 116             strcpyW(((MONITORINFOEXW*)lpMonitorInfo)->szDevice, (LPCWSTR)"D\0I\0S\0P\0L\0A\0Y\0\0");
 117
 118         return TRUE;
 119     }
 120
 121     return FALSE;
 122 }
 123
 124 /***********************************************************************
 125  *              EnumDisplayMonitors (USER32.@)
 126  */
 127 BOOL WINAPI EnumDisplayMonitors(
 128         HDC             hdcOptionalForPainting,
 129         LPRECT         lprcEnumMonitorsThatIntersect,
 130         MONITORENUMPROC lpfnEnumProc,
 131         LPARAM          dwData)
 132 {
 133     RECT rcLimit;
 134     SetRect( &rcLimit, 0, 0, GetSystemMetrics(SM_CXSCREEN),
 135              GetSystemMetrics(SM_CYSCREEN) );
 136
 137     if (!lpfnEnumProc)
 138         return FALSE;
 139
 140     if (hdcOptionalForPainting)
 141     {
 142         RECT    rcClip;
 143         POINT   ptOrg;
 144
 145         switch (GetClipBox(hdcOptionalForPainting, &rcClip))
 146         {
 147         default:
 148             if (!GetDCOrgEx(hdcOptionalForPainting, &ptOrg))
 149                 return FALSE;
 150
 151             OffsetRect(&rcLimit, -ptOrg.x, -ptOrg.y);
 152             if (IntersectRect(&rcLimit, &rcLimit, &rcClip) &&
 153                 (!lprcEnumMonitorsThatIntersect ||
 154                      IntersectRect(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect))) {
 155
 156                 break;
 157             }
 158             /* fall through */
 159         case NULLREGION:
 160              return TRUE;
 161         case ERROR:
 162              return FALSE;
 163         }
 164     } else {
 165         if (    lprcEnumMonitorsThatIntersect &&
 166                 !IntersectRect(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect)) {
 167
 168             return TRUE;
 169         }
 170     }
 171
 172     return lpfnEnumProc(
 173             xPRIMARY_MONITOR,
 174             hdcOptionalForPainting,
 175             &rcLimit,
 176             dwData);
 177 }