windows/multimon.c

   1 /*
   2  * Multimonitor APIs
   3  *
   4  * Copyright 1998 Turchanov Sergey
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <string.h>
  22 #include "windef.h"
  23 #include "wingdi.h"
  24 #include "winbase.h"
  25 #include "winuser.h"
  26 #include "wine/unicode.h"
  27
  28 /**********************************************************************/
  29
  30 #define xPRIMARY_MONITOR ((HMONITOR)0x12340042)
  31
  32 /***********************************************************************
  33  *              MonitorFromPoint (USER32.@)
  34  */
  35 HMONITOR WINAPI MonitorFromPoint(POINT ptScreenCoords, DWORD dwFlags)
  36 {
  37     if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
  38         ((ptScreenCoords.x >= 0) &&
  39         (ptScreenCoords.x < GetSystemMetrics(SM_CXSCREEN)) &&
  40         (ptScreenCoords.y >= 0) &&
  41         (ptScreenCoords.y < GetSystemMetrics(SM_CYSCREEN))))
  42     {
  43         return xPRIMARY_MONITOR;
  44     }
  45     return (HMONITOR)0;
  46 }
  47
  48 /***********************************************************************
  49  *              MonitorFromRect (USER32.@)
  50  */
  51 HMONITOR WINAPI MonitorFromRect(LPRECT lprcScreenCoords, DWORD dwFlags)
  52 {
  53     if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
  54         ((lprcScreenCoords->right > 0) &&
  55         (lprcScreenCoords->bottom > 0) &&
  56         (lprcScreenCoords->left < GetSystemMetrics(SM_CXSCREEN)) &&
  57         (lprcScreenCoords->top < GetSystemMetrics(SM_CYSCREEN))))
  58     {
  59         return xPRIMARY_MONITOR;
  60     }
  61     return (HMONITOR)0;
  62 }
  63
  64 /***********************************************************************
  65  *              MonitorFromWindow (USER32.@)
  66  */
  67 HMONITOR WINAPI MonitorFromWindow(HWND hWnd, DWORD dwFlags)
  68 {
  69     WINDOWPLACEMENT wp;
  70
  71     if (dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST))
  72         return xPRIMARY_MONITOR;
  73
  74     if (IsIconic(hWnd) ?
  75             GetWindowPlacement(hWnd, &wp) :
  76             GetWindowRect(hWnd, &wp.rcNormalPosition)) {
  77
  78         return MonitorFromRect(&wp.rcNormalPosition, dwFlags);
  79     }
  80
  81     return (HMONITOR)0;
  82 }
  83
  84 /***********************************************************************
  85  *              GetMonitorInfoA (USER32.@)
  86  */
  87 BOOL WINAPI GetMonitorInfoA(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
  88 {
  89     RECT rcWork;
  90
  91     if ((hMonitor == xPRIMARY_MONITOR) &&
  92         lpMonitorInfo &&
  93         (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
  94         SystemParametersInfoA(SPI_GETWORKAREA, 0, &rcWork, 0))
  95     {
  96         SetRect( &lpMonitorInfo->rcMonitor, 0, 0,
  97                  GetSystemMetrics(SM_CXSCREEN),
  98                  GetSystemMetrics(SM_CYSCREEN) );
  99         lpMonitorInfo->rcWork = rcWork;
 100         lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
 101
 102         if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEXA))
 103             strcpy(((MONITORINFOEXA*)lpMonitorInfo)->szDevice, "DISPLAY");
 104
 105         return TRUE;
 106     }
 107
 108     return FALSE;
 109 }
 110
 111 /***********************************************************************
 112  *              GetMonitorInfoW (USER32.@)
 113  */
 114 BOOL WINAPI GetMonitorInfoW(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
 115 {
 116     RECT rcWork;
 117
 118     if ((hMonitor == xPRIMARY_MONITOR) &&
 119         lpMonitorInfo &&
 120         (lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
 121         SystemParametersInfoW(SPI_GETWORKAREA, 0, &rcWork, 0))
 122     {
 123         SetRect( &lpMonitorInfo->rcMonitor, 0, 0,
 124                  GetSystemMetrics(SM_CXSCREEN),
 125                  GetSystemMetrics(SM_CYSCREEN) );
 126         lpMonitorInfo->rcWork = rcWork;
 127         lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
 128
 129         if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEXW))
 130             strcpyW(((MONITORINFOEXW*)lpMonitorInfo)->szDevice, (LPCWSTR)"D\0I\0S\0P\0L\0A\0Y\0\0");
 131
 132         return TRUE;
 133     }
 134
 135     return FALSE;
 136 }
 137
 138 /***********************************************************************
 139  *              EnumDisplayMonitors (USER32.@)
 140  */
 141 BOOL WINAPI EnumDisplayMonitors(
 142         HDC             hdcOptionalForPainting,
 143         LPRECT         lprcEnumMonitorsThatIntersect,
 144         MONITORENUMPROC lpfnEnumProc,
 145         LPARAM          dwData)
 146 {
 147     RECT rcLimit;
 148     SetRect( &rcLimit, 0, 0, GetSystemMetrics(SM_CXSCREEN),
 149              GetSystemMetrics(SM_CYSCREEN) );
 150
 151     if (!lpfnEnumProc)
 152         return FALSE;
 153
 154     if (hdcOptionalForPainting)
 155     {
 156         RECT    rcClip;
 157         POINT   ptOrg;
 158
 159         switch (GetClipBox(hdcOptionalForPainting, &rcClip))
 160         {
 161         default:
 162             if (!GetDCOrgEx(hdcOptionalForPainting, &ptOrg))
 163                 return FALSE;
 164
 165             OffsetRect(&rcLimit, -ptOrg.x, -ptOrg.y);
 166             if (IntersectRect(&rcLimit, &rcLimit, &rcClip) &&
 167                 (!lprcEnumMonitorsThatIntersect ||
 168                      IntersectRect(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect))) {
 169
 170                 break;
 171             }
 172             /* fall through */
 173         case NULLREGION:
 174              return TRUE;
 175         case ERROR:
 176              return FALSE;
 177         }
 178     } else {
 179         if (    lprcEnumMonitorsThatIntersect &&
 180                 !IntersectRect(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect)) {
 181
 182             return TRUE;
 183         }
 184     }
 185
 186     return lpfnEnumProc(
 187             xPRIMARY_MONITOR,
 188             hdcOptionalForPainting,
 189             &rcLimit,
 190             dwData);
 191 }