mirror of
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Simple implementation of some multi-monitor APIs.
svn path=/trunk/; revision=11678
This commit is contained in:
Gregor Anich
@@ -0,0 +1,30 @@
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#ifndef _WIN32K_MONITOR_H
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#define _WIN32K_MONITOR_H
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#include <windows.h>
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struct GDIDEVICE;
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/* monitor object */
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typedef struct _MONITOR_OBJECT
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{
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HANDLE Handle; /* system object handle */
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FAST_MUTEX Lock; /* R/W lock */
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BOOL IsPrimary; /* wether this is the primary monitor */
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UNICODE_STRING DeviceName; /* name of the monitor */
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GDIDEVICE *GdiDevice; /* pointer to the GDI device to
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which this monitor is attached */
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struct _MONITOR_OBJECT *Prev, *Next; /* doubly linked list */
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} MONITOR_OBJECT, *PMONITOR_OBJECT;
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/* functions */
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NTSTATUS InitMonitorImpl();
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NTSTATUS CleanupMonitorImpl();
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NTSTATUS IntAttachMonitor(GDIDEVICE *pGdiDevice, ULONG DisplayNumber);
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NTSTATUS IntDetachMonitor(GDIDEVICE *pGdiDevice);
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#endif /* _WIN32K_MONITOR_H */
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/* EOF */
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@@ -0,0 +1,883 @@
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/*
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* ReactOS W32 Subsystem
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PURPOSE: Monitor support
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* FILE: subsys/win32k/ntuser/monitor.c
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* PROGRAMER: Anich Gregor ([email protected])
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* REVISION HISTORY:
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* 26-02-2004 Created
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*/
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/* INCLUDES ******************************************************************/
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#include <w32k.h>
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/* FIXME: find include file for these */
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#define MONITORINFOF_PRIMARY 1
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#define MONITOR_DEFAULTTONULL 0
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#define MONITOR_DEFAULTTOPRIMARY 1
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#define MONITOR_DEFAULTTONEAREST 2
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//#define NDEBUG
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#include <debug.h>
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/* GLOBALS *******************************************************************/
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/* list of monitors */
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static PMONITOR_OBJECT MonitorList = NULL;
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static FAST_MUTEX MonitorListLock; /* R/W lock for monitor list */
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/* INITALIZATION FUNCTIONS ****************************************************/
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NTSTATUS
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InitMonitorImpl()
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{
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DPRINT("Initializing monitor implementation...\n");
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ExInitializeFastMutex(&MonitorListLock);
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return STATUS_SUCCESS;
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}
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NTSTATUS
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CleanupMonitorImpl()
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{
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DPRINT("Cleaning up monitor implementation...\n");
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/* FIXME: Destroy monitor objects? */
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return STATUS_SUCCESS;
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}
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/* PRIVATE FUNCTIONS **********************************************************/
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#ifndef MIN
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# define MIN(a, b) ((a) < (b) ? (a) : (b))
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#endif
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#ifndef MAX
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# define MAX(a, b) ((a) > (b) ? (a) : (b))
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#endif
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#ifndef ABS
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# define ABS(a) ((a) < (0) ? (-(a)) : (a))
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#endif
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/* IntCreateMonitorObject
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*
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* Creates a MONITOR_OBJECT
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*
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* Return value
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* If the function succeeds a pointer to a MONITOR_OBJECT is returned. On failure
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* NULL is returned.
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*/
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static
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PMONITOR_OBJECT
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IntCreateMonitorObject()
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{
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HANDLE Handle;
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PMONITOR_OBJECT Monitor;
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Monitor = ObmCreateObject(PsGetWin32Process()->WindowStation->HandleTable, &Handle, otMonitor, sizeof (MONITOR_OBJECT));
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if (Monitor == NULL)
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{
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return NULL;
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}
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Monitor->Handle = Handle;
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ExInitializeFastMutex(&Monitor->Lock);
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return Monitor;
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}
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/* IntDestroyMonitorObject
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*
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* Destroys a MONITOR_OBJECT
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* You have to be the owner of the monitors lock to safely destroy it.
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*
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* Arguments
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*
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* pMonitor
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* Pointer to the MONITOR_OBJECT which shall be deleted
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*/
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static
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void
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IntDestroyMonitorObject(IN PMONITOR_OBJECT pMonitor)
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{
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RtlFreeUnicodeString(&pMonitor->DeviceName);
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ObmDereferenceObject(pMonitor);
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}
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/* IntGetMonitorObject
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*
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* Returns the MONITOR_OBJECT for the given monitor handle.
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*
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* Arguments
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*
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* hMonitor
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* Monitor handle for which to get the MONITOR_OBJECT
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*
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* Return value
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* Returns a pointer to a MONITOR_OBJECT on success and increase the
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* refcount of the monitor object; NULL on failure
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*/
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static
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PMONITOR_OBJECT
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IntGetMonitorObject(IN HMONITOR hMonitor)
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{
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PMONITOR_OBJECT Monitor;
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NTSTATUS Status;
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Status = ObmReferenceObjectByHandle(PsGetWin32Process()->WindowStation->HandleTable, hMonitor, otMonitor, (PVOID *)&Monitor);
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if (!NT_SUCCESS(Status) || Monitor == NULL)
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{
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/* FIXME: SetLastNtError( status ); ? */
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return NULL;
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}
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return Monitor;
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}
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/* IntReleaseMonitorObject
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*
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* Releases the given MONITOR_OBJECT.
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*
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* Arguments
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*
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* pMonitor
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* MONITOR_OBJECT to be released
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*/
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#define IntReleaseMonitorObject(MonitorObj) \
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ObmDereferenceObject(MonitorObj);
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/* IntAttachMonitor
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*
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* Creates a new MONITOR_OBJECT and appends it to the list of monitors.
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*
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* Arguments
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*
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* pGdiDevice Pointer to the GDIDEVICE onto which the monitor was attached
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* DisplayNumber Display Number (starting with 0)
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*
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* Return value
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* Returns a NTSTATUS
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*/
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NTSTATUS
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IntAttachMonitor(IN GDIDEVICE *pGdiDevice,
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IN ULONG DisplayNumber)
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{
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PMONITOR_OBJECT Monitor;
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WCHAR Buffer[CCHDEVICENAME];
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DPRINT("Attaching monitor...\n");
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/* create new monitor object */
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Monitor = IntCreateMonitorObject();
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if (Monitor == NULL)
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{
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DPRINT("Couldnt create monitor object\n");
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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_snwprintf(Buffer, CCHDEVICENAME, L"\\??\\DISPLAY%d", DisplayNumber + 1);
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if (!RtlCreateUnicodeString(&Monitor->DeviceName, Buffer))
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{
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DPRINT("Couldn't duplicate monitor name!\n");
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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Monitor->GdiDevice = pGdiDevice;
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ExAcquireFastMutex(&MonitorListLock);
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if (MonitorList == NULL)
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{
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DPRINT("Primary monitor is beeing attached\n");
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Monitor->IsPrimary = TRUE;
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MonitorList = Monitor;
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}
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else
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{
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PMONITOR_OBJECT p;
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DPRINT("Additional monitor is beeing attached\n");
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for (p = MonitorList; p->Next != NULL; p = p->Next);
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{
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p->Next = Monitor;
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}
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Monitor->Prev = p;
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}
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ExReleaseFastMutex(&MonitorListLock);
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return STATUS_SUCCESS;
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}
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/* IntDetachMonitor
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*
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* Deletes a MONITOR_OBJECT and removes it from the list of monitors.
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*
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* Arguments
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*
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* pGdiDevice Pointer to the GDIDEVICE from which the monitor was detached
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*
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* Return value
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* Returns a NTSTATUS
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*/
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NTSTATUS
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IntDetachMonitor(IN GDIDEVICE *pGdiDevice)
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{
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PMONITOR_OBJECT Monitor;
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ExAcquireFastMutex(&MonitorListLock);
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for (Monitor = MonitorList; Monitor != NULL; Monitor = Monitor->Next)
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{
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if (Monitor->GdiDevice == pGdiDevice)
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break;
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}
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if (Monitor == NULL)
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{
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/* no monitor for given device found */
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ExReleaseFastMutex(&MonitorListLock);
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return STATUS_INVALID_PARAMETER;
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}
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if (Monitor->IsPrimary && (Monitor->Next != NULL || Monitor->Prev != NULL))
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{
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PMONITOR_OBJECT NewPrimaryMonitor = (Monitor->Prev != NULL) ? (Monitor->Prev) : (Monitor->Next);
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ExAcquireFastMutex(&NewPrimaryMonitor->Lock);
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NewPrimaryMonitor->IsPrimary = TRUE;
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ExReleaseFastMutex(&NewPrimaryMonitor->Lock);
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}
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if (MonitorList == Monitor)
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{
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MonitorList = Monitor->Next;
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if (Monitor->Next != NULL)
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Monitor->Next->Prev = NULL;
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}
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else
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{
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Monitor->Prev->Next = Monitor->Next;
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if (Monitor->Next != NULL)
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Monitor->Next->Prev = Monitor->Prev;
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}
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ExReleaseFastMutex(&MonitorListLock);
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IntDestroyMonitorObject(Monitor);
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return STATUS_SUCCESS;
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}
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/* IntGetPrimaryMonitor
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*
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* Returns a PMONITOR_OBJECT for the primary monitor
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*
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* Return value
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* PMONITOR_OBJECT
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*/
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static
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PMONITOR_OBJECT
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IntGetPrimaryMonitor()
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{
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PMONITOR_OBJECT Monitor;
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ExAcquireFastMutex(&MonitorListLock);
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for (Monitor = MonitorList; Monitor != NULL; Monitor = Monitor->Next)
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{
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/* FIXME: I guess locking the monitor is not neccessary to read 1 int */
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if (Monitor->IsPrimary)
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break;
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}
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ExReleaseFastMutex(&MonitorListLock);
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return Monitor;
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}
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/* IntGetMonitorsFromRect
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*
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* Returns a list of monitor handles/rectangles. The rectangles in the list are
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* the areas of intersection with the monitors.
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*
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* Arguments
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*
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* pRect
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* Rectangle in desktop coordinates. If this is NULL all monitors are
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* returned and the rect list is filled with the sizes of the monitors.
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*
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* hMonitorList
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* Pointer to an array of HMONITOR which is filled with monitor handles.
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* Can be NULL
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*
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* monitorRectList
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* Pointer to an array of RECT which is filled with intersection rects in
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* desktop coordinates.
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* Can be NULL, will be ignored if no intersecting monitor is found and
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* flags is MONITOR_DEFAULTTONEAREST
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*
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* listSize
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* Size of the hMonitorList and monitorRectList arguments. If this is zero
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* hMonitorList and monitorRectList are ignored.
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*
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* flags
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* Either 0 or MONITOR_DEFAULTTONEAREST (ignored if rect is NULL)
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*
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* Returns
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* The number of monitors which intersect the specified region.
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*/
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static
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UINT
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IntGetMonitorsFromRect(OPTIONAL IN LPCRECT pRect,
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OPTIONAL OUT HMONITOR *hMonitorList,
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OPTIONAL OUT LPRECT monitorRectList,
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OPTIONAL IN DWORD listSize,
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OPTIONAL IN DWORD flags)
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{
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PMONITOR_OBJECT Monitor, NearestMonitor = NULL;
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UINT iCount = 0;
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LONG iNearestDistanceX = 0x7fffffff, iNearestDistanceY = 0x7fffffff;
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/* find monitors which intersect the rectangle */
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ExAcquireFastMutex(&MonitorListLock);
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for (Monitor = MonitorList; Monitor != NULL; Monitor = Monitor->Next)
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{
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RECT MonitorRect, IntersectionRect;
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ExAcquireFastMutex(&Monitor->Lock);
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MonitorRect.left = 0; /* FIXME: get origin */
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MonitorRect.top = 0; /* FIXME: get origin */
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MonitorRect.right = MonitorRect.left + Monitor->GdiDevice->GDIInfo.ulHorzRes;
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MonitorRect.bottom = MonitorRect.top + Monitor->GdiDevice->GDIInfo.ulVertRes;
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ExReleaseFastMutex(&Monitor->Lock);
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DPRINT("MonitorRect: left = %d, top = %d, right = %d, bottom = %d\n",
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MonitorRect.left, MonitorRect.top, MonitorRect.right, MonitorRect.bottom);
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if (pRect != NULL)
|
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{
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BOOL intersects = TRUE;
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/* check if the rect intersects the monitor */
|
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if ((pRect->right < MonitorRect.left) || (pRect->left > MonitorRect.right) ||
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(pRect->bottom < MonitorRect.top) || (pRect->top > MonitorRect.bottom))
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{
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intersects = FALSE;
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}
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if (flags == MONITOR_DEFAULTTONEAREST && !intersects)
|
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{
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INT distanceX, distanceY;
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distanceX = MIN(ABS(MonitorRect.left - pRect->right),
|
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ABS(pRect->left - MonitorRect.right));
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distanceY = MIN(ABS(MonitorRect.top - pRect->bottom),
|
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ABS(pRect->top - MonitorRect.bottom));
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if (((distanceX < iNearestDistanceX) && (distanceY <= iNearestDistanceY)) ||
|
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((distanceX <= iNearestDistanceX) && (distanceY < iNearestDistanceY)))
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{
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iNearestDistanceX = distanceX;
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iNearestDistanceY = distanceY;
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NearestMonitor = Monitor;
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}
|
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}
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if (!intersects)
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continue;
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/* calculate intersection */
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IntersectionRect.left = MAX(MonitorRect.left, pRect->left);
|
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IntersectionRect.top = MAX(MonitorRect.top, pRect->top);
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IntersectionRect.right = MIN(MonitorRect.right, pRect->right);
|
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IntersectionRect.bottom = MIN(MonitorRect.bottom, pRect->bottom);
|
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}
|
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else
|
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{
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IntersectionRect = MonitorRect;
|
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}
|
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|
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if (iCount < listSize)
|
||||
{
|
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if (hMonitorList != NULL)
|
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hMonitorList[iCount] = Monitor->Handle;
|
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if (monitorRectList != NULL)
|
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monitorRectList[iCount] = IntersectionRect;
|
||||
}
|
||||
iCount++;
|
||||
}
|
||||
ExReleaseFastMutex(&MonitorListLock);
|
||||
|
||||
if (iCount == 0 && flags == MONITOR_DEFAULTTONEAREST)
|
||||
{
|
||||
if (iCount < listSize)
|
||||
{
|
||||
if (hMonitorList != NULL)
|
||||
hMonitorList[iCount] = NearestMonitor->Handle;
|
||||
}
|
||||
iCount++;
|
||||
}
|
||||
|
||||
return iCount;
|
||||
}
|
||||
|
||||
/* PUBLIC FUNCTIONS ***********************************************************/
|
||||
|
||||
/* NtUserEnumDisplayMonitors
|
||||
*
|
||||
* Enumerates display monitors which intersect the given HDC/cliprect
|
||||
*
|
||||
* Arguments
|
||||
*
|
||||
* hDC
|
||||
* Handle to a DC for which to enum intersecting monitors. If this is NULL
|
||||
* it returns all monitors which are part of the current virtual screen.
|
||||
*
|
||||
* pRect
|
||||
* Clipping rectangle with coordinate system origin at the DCs origin if the
|
||||
* given HDC is not NULL or in virtual screen coordinated if it is NULL.
|
||||
* Can be NULL
|
||||
*
|
||||
* hMonitorList
|
||||
* Pointer to an array of HMONITOR which is filled with monitor handles.
|
||||
* Can be NULL
|
||||
*
|
||||
* monitorRectList
|
||||
* Pointer to an array of RECT which is filled with intersection rectangles.
|
||||
* Can be NULL
|
||||
*
|
||||
* listSize
|
||||
* Size of the hMonitorList and monitorRectList arguments. If this is zero
|
||||
* hMonitorList and monitorRectList are ignored.
|
||||
*
|
||||
* Returns
|
||||
* The number of monitors which intersect the specified region or -1 on failure.
|
||||
*/
|
||||
INT
|
||||
STDCALL
|
||||
NtUserEnumDisplayMonitors(
|
||||
OPTIONAL IN HDC hDC,
|
||||
OPTIONAL IN LPCRECT pRect,
|
||||
OPTIONAL OUT HMONITOR *hMonitorList,
|
||||
OPTIONAL OUT LPRECT monitorRectList,
|
||||
OPTIONAL IN DWORD listSize)
|
||||
{
|
||||
INT numMonitors, i;
|
||||
HMONITOR *safeHMonitorList = NULL;
|
||||
LPRECT safeRectList = NULL;
|
||||
RECT rect, *myRect;
|
||||
RECT dcRect;
|
||||
NTSTATUS status;
|
||||
|
||||
/* get rect */
|
||||
if (pRect != NULL)
|
||||
{
|
||||
status = MmCopyFromCaller(&rect, pRect, sizeof (RECT));
|
||||
if (!NT_SUCCESS(status))
|
||||
{
|
||||
DPRINT("MmCopyFromCaller() failed!\n");
|
||||
SetLastNtError(status);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
if (hDC != NULL)
|
||||
{
|
||||
PDC dc;
|
||||
HRGN dcVisRgn;
|
||||
INT regionType;
|
||||
|
||||
/* get visible region bounding rect */
|
||||
dc = DC_LockDc(hDC);
|
||||
if (dc == NULL)
|
||||
{
|
||||
DPRINT("DC_LockDc() failed!\n");
|
||||
/* FIXME: setlasterror? */
|
||||
return -1;
|
||||
}
|
||||
dcVisRgn = dc->w.hVisRgn;
|
||||
DC_UnlockDc(hDC);
|
||||
|
||||
regionType = NtGdiGetRgnBox(dcVisRgn, &dcRect);
|
||||
if (regionType == 0)
|
||||
{
|
||||
DPRINT("NtGdiGetRgnBox() failed!\n");
|
||||
return -1;
|
||||
}
|
||||
if (regionType == NULLREGION)
|
||||
return 0;
|
||||
if (regionType == COMPLEXREGION)
|
||||
{ /* TODO: warning */ }
|
||||
|
||||
/* if hDC and pRect are given the area of interest is pRect with
|
||||
coordinate origin at the DC position */
|
||||
if (pRect != NULL)
|
||||
{
|
||||
rect.left += dcRect.left;
|
||||
rect.right += dcRect.left;
|
||||
rect.top += dcRect.top;
|
||||
rect.bottom += dcRect.top;
|
||||
}
|
||||
/* if hDC is given and pRect is not the area of interest is the
|
||||
bounding rect of hDC */
|
||||
else
|
||||
{
|
||||
rect = dcRect;
|
||||
}
|
||||
}
|
||||
|
||||
if (hDC == NULL && pRect == NULL)
|
||||
myRect = NULL;
|
||||
else
|
||||
myRect = ▭
|
||||
|
||||
/* find intersecting monitors */
|
||||
numMonitors = IntGetMonitorsFromRect(myRect, NULL, NULL, 0, 0);
|
||||
if (numMonitors == 0 || listSize == 0 ||
|
||||
(hMonitorList == NULL && monitorRectList == NULL))
|
||||
{
|
||||
DPRINT("numMonitors = %d\n", numMonitors);
|
||||
return numMonitors;
|
||||
}
|
||||
|
||||
if (hMonitorList != NULL && listSize != 0)
|
||||
{
|
||||
safeHMonitorList = ExAllocatePool(PagedPool, sizeof (HMONITOR) * listSize);
|
||||
if (safeHMonitorList == NULL)
|
||||
{
|
||||
/* FIXME: SetLastWin32Error? */
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
if (monitorRectList != NULL && listSize != 0)
|
||||
{
|
||||
safeRectList = ExAllocatePool(PagedPool, sizeof (RECT) * listSize);
|
||||
if (safeRectList == NULL)
|
||||
{
|
||||
ExFreePool(safeHMonitorList);
|
||||
/* FIXME: SetLastWin32Error? */
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
/* get intersecting monitors */
|
||||
numMonitors = IntGetMonitorsFromRect(myRect, safeHMonitorList, safeRectList,
|
||||
listSize, 0 );
|
||||
|
||||
if (hDC != NULL && pRect != NULL && safeRectList != NULL)
|
||||
for (i = 0; i < numMonitors; i++)
|
||||
{
|
||||
safeRectList[i].left -= dcRect.left;
|
||||
safeRectList[i].right -= dcRect.left;
|
||||
safeRectList[i].top -= dcRect.top;
|
||||
safeRectList[i].bottom -= dcRect.top;
|
||||
}
|
||||
|
||||
/* output result */
|
||||
if (hMonitorList != NULL && listSize != 0)
|
||||
{
|
||||
status = MmCopyToCaller(hMonitorList, safeHMonitorList, sizeof (HMONITOR) * listSize);
|
||||
ExFreePool(safeHMonitorList);
|
||||
if (!NT_SUCCESS(status))
|
||||
{
|
||||
ExFreePool(safeRectList);
|
||||
SetLastNtError(status);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
if (monitorRectList != NULL && listSize != 0)
|
||||
{
|
||||
status = MmCopyToCaller(monitorRectList, safeRectList, sizeof (RECT) * listSize);
|
||||
ExFreePool(safeRectList);
|
||||
if (!NT_SUCCESS(status))
|
||||
{
|
||||
SetLastNtError(status);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return numMonitors;
|
||||
}
|
||||
|
||||
/* NtUserGetMonitorInfo
|
||||
*
|
||||
* Retrieves information about a given monitor
|
||||
*
|
||||
* Arguments
|
||||
*
|
||||
* hMonitor
|
||||
* Handle to a monitor for which to get information
|
||||
*
|
||||
* pMonitorInfo
|
||||
* Pointer to a MONITORINFO struct which is filled with the information.
|
||||
* The cbSize member must be set to sizeof(MONITORINFO) or
|
||||
* sizeof(MONITORINFOEX). Even if set to sizeof(MONITORINFOEX) only parts
|
||||
* from MONITORINFO will be filled.
|
||||
*
|
||||
* pDevice
|
||||
* Pointer to a UNICODE_STRING which will recieve the device's name. The
|
||||
* length should be CCHDEVICENAME
|
||||
* Can be NULL
|
||||
*
|
||||
* Return value
|
||||
* TRUE on success; FALSE on failure (calls SetLastNtError())
|
||||
*
|
||||
*/
|
||||
BOOL
|
||||
STDCALL
|
||||
NtUserGetMonitorInfo(
|
||||
IN HMONITOR hMonitor,
|
||||
OUT LPMONITORINFO pMonitorInfo)
|
||||
{
|
||||
PMONITOR_OBJECT Monitor;
|
||||
MONITORINFOEXW MonitorInfo;
|
||||
NTSTATUS Status;
|
||||
|
||||
/* get monitor object */
|
||||
if ((Monitor = IntGetMonitorObject(hMonitor)) == NULL)
|
||||
{
|
||||
DPRINT("Couldnt find monitor 0x%lx\n", hMonitor);
|
||||
SetLastNtError(STATUS_INVALID_HANDLE);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* get size of pMonitorInfo */
|
||||
Status = MmCopyFromCaller(&MonitorInfo.cbSize, &pMonitorInfo->cbSize, sizeof (MonitorInfo.cbSize));
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
IntReleaseMonitorObject(Monitor);
|
||||
SetLastNtError(Status);
|
||||
return FALSE;
|
||||
}
|
||||
if ((MonitorInfo.cbSize != sizeof (MONITORINFO)) &&
|
||||
(MonitorInfo.cbSize != sizeof (MONITORINFOEXW)))
|
||||
{
|
||||
SetLastNtError(STATUS_INVALID_PARAMETER);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
ExAcquireFastMutex(&Monitor->Lock);
|
||||
/* fill monitor info */
|
||||
MonitorInfo.rcMonitor.left = 0; /* FIXME: get origin */
|
||||
MonitorInfo.rcMonitor.top = 0; /* FIXME: get origin */
|
||||
MonitorInfo.rcMonitor.right = MonitorInfo.rcMonitor.left + Monitor->GdiDevice->GDIInfo.ulHorzRes;
|
||||
MonitorInfo.rcMonitor.bottom = MonitorInfo.rcMonitor.top + Monitor->GdiDevice->GDIInfo.ulVertRes;
|
||||
MonitorInfo.rcWork = MonitorInfo.rcMonitor; /* FIXME: use DEVMODE panning to calculate work area? */
|
||||
MonitorInfo.dwFlags = 0;
|
||||
if (Monitor->IsPrimary)
|
||||
MonitorInfo.dwFlags |= MONITORINFOF_PRIMARY;
|
||||
|
||||
/* fill device name */
|
||||
if (MonitorInfo.cbSize == sizeof (MONITORINFOEXW))
|
||||
{
|
||||
WCHAR nul = L'\0';
|
||||
INT len = Monitor->DeviceName.Length;
|
||||
if (len >= CCHDEVICENAME * sizeof (WCHAR))
|
||||
len = (CCHDEVICENAME - 1) * sizeof (WCHAR);
|
||||
|
||||
memcpy(MonitorInfo.szDevice, Monitor->DeviceName.Buffer, len);
|
||||
memcpy(MonitorInfo.szDevice + (len / sizeof (WCHAR)), &nul, sizeof (WCHAR));
|
||||
}
|
||||
ExReleaseFastMutex(&Monitor->Lock);
|
||||
IntReleaseMonitorObject(Monitor);
|
||||
|
||||
/* output data */
|
||||
Status = MmCopyToCaller(pMonitorInfo, &MonitorInfo, MonitorInfo.cbSize);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
DPRINT("GetMonitorInfo: MmCopyToCaller failed\n");
|
||||
SetLastNtError(Status);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
DPRINT("GetMonitorInfo: success\n");
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/* NtUserMonitorFromPoint
|
||||
*
|
||||
* Returns a handle to the monitor containing the given point.
|
||||
*
|
||||
* Arguments
|
||||
*
|
||||
* point
|
||||
* Point for which to find monitor
|
||||
*
|
||||
* dwFlags
|
||||
* Specifies the behaviour if the point isn't on any of the monitors.
|
||||
*
|
||||
* Return value
|
||||
* If the point is found a handle to the monitor is returned; if not the
|
||||
* return value depends on dwFlags
|
||||
*/
|
||||
HMONITOR
|
||||
STDCALL
|
||||
NtUserMonitorFromPoint(
|
||||
IN POINT point,
|
||||
IN DWORD dwFlags)
|
||||
{
|
||||
INT NumMonitors;
|
||||
RECT InRect;
|
||||
HMONITOR hMonitor = NULL;
|
||||
|
||||
/* fill inRect */
|
||||
InRect.left = InRect.right = point.x;
|
||||
InRect.top = InRect.bottom = point.y;
|
||||
|
||||
/* find intersecting monitor */
|
||||
NumMonitors = IntGetMonitorsFromRect(&InRect, &hMonitor, NULL, 1, 0);
|
||||
if (NumMonitors < 0)
|
||||
{
|
||||
return (HMONITOR)NULL;
|
||||
}
|
||||
|
||||
if (hMonitor == NULL)
|
||||
{
|
||||
if (dwFlags == MONITOR_DEFAULTTOPRIMARY)
|
||||
{
|
||||
PMONITOR_OBJECT MonitorObj = IntGetPrimaryMonitor();
|
||||
if (MonitorObj)
|
||||
hMonitor = MonitorObj->Handle;
|
||||
}
|
||||
else if (dwFlags == MONITOR_DEFAULTTONEAREST)
|
||||
{
|
||||
NumMonitors = IntGetMonitorsFromRect(&InRect, &hMonitor, NULL,
|
||||
1, MONITOR_DEFAULTTONEAREST);
|
||||
/*ASSERT( (numMonitors > 0) && (hMonitor != NULL) );*/
|
||||
}
|
||||
/* else flag is DEFAULTTONULL */
|
||||
}
|
||||
|
||||
return hMonitor;
|
||||
}
|
||||
|
||||
/* NtUserMonitorFromRect
|
||||
*
|
||||
* Returns a handle to the monitor having the largest intersection with a
|
||||
* given rectangle
|
||||
*
|
||||
* Arguments
|
||||
*
|
||||
* pRect
|
||||
* Pointer to a RECT for which to find monitor
|
||||
*
|
||||
* dwFlags
|
||||
* Specifies the behaviour if no monitor intersects the given rect
|
||||
*
|
||||
* Return value
|
||||
* If a monitor intersects the rect a handle to it is returned; if not the
|
||||
* return value depends on dwFlags
|
||||
*/
|
||||
HMONITOR
|
||||
STDCALL
|
||||
NtUserMonitorFromRect(
|
||||
IN LPCRECT pRect,
|
||||
IN DWORD dwFlags)
|
||||
{
|
||||
INT numMonitors, iLargestArea = -1, i;
|
||||
LPRECT rectList;
|
||||
HMONITOR *hMonitorList;
|
||||
HMONITOR hMonitor = NULL;
|
||||
RECT rect;
|
||||
NTSTATUS status;
|
||||
|
||||
/* get rect */
|
||||
status = MmCopyFromCaller(&rect, pRect, sizeof (RECT));
|
||||
if (!NT_SUCCESS(status))
|
||||
{
|
||||
SetLastNtError(status);
|
||||
return (HMONITOR)NULL;
|
||||
}
|
||||
|
||||
/* find intersecting monitors */
|
||||
numMonitors = IntGetMonitorsFromRect(&rect, NULL, NULL, 0, 0);
|
||||
if (numMonitors < 0)
|
||||
{
|
||||
return (HMONITOR)NULL;
|
||||
}
|
||||
|
||||
if (numMonitors == 0)
|
||||
{
|
||||
if (dwFlags == MONITOR_DEFAULTTOPRIMARY)
|
||||
{
|
||||
PMONITOR_OBJECT monitorObj = IntGetPrimaryMonitor();
|
||||
if (monitorObj)
|
||||
return monitorObj->Handle;
|
||||
}
|
||||
else if (dwFlags == MONITOR_DEFAULTTONEAREST)
|
||||
{
|
||||
numMonitors = IntGetMonitorsFromRect(&rect, &hMonitor, NULL,
|
||||
1, MONITOR_DEFAULTTONEAREST);
|
||||
if (numMonitors <= 0)
|
||||
{
|
||||
/* error? */
|
||||
return (HMONITOR)NULL;
|
||||
}
|
||||
|
||||
if (numMonitors > 0)
|
||||
return hMonitor;
|
||||
}
|
||||
/* else flag is DEFAULTTONULL */
|
||||
return (HMONITOR)NULL;
|
||||
}
|
||||
|
||||
hMonitorList = ExAllocatePool(PagedPool, sizeof (HMONITOR) * numMonitors);
|
||||
if (hMonitorList == NULL)
|
||||
{
|
||||
/* FIXME: SetLastWin32Error? */
|
||||
return (HMONITOR)NULL;
|
||||
}
|
||||
rectList = ExAllocatePool(PagedPool, sizeof (RECT) * numMonitors);
|
||||
if (rectList == NULL)
|
||||
{
|
||||
ExFreePool(hMonitorList);
|
||||
/* FIXME: SetLastWin32Error? */
|
||||
return (HMONITOR)NULL;
|
||||
}
|
||||
|
||||
/* get intersecting monitors */
|
||||
numMonitors = IntGetMonitorsFromRect(&rect, hMonitorList, rectList,
|
||||
numMonitors, 0);
|
||||
if (numMonitors <= 0)
|
||||
{
|
||||
return (HMONITOR)NULL;
|
||||
}
|
||||
|
||||
/* find largest intersection */
|
||||
for (i = 0; i < numMonitors; i++)
|
||||
{
|
||||
INT area = (rectList[i].right - rectList[i].left) *
|
||||
(rectList[i].bottom - rectList[i].top);
|
||||
if (area > iLargestArea)
|
||||
{
|
||||
hMonitor = hMonitorList[i];
|
||||
}
|
||||
}
|
||||
|
||||
ExFreePool(hMonitorList);
|
||||
ExFreePool(rectList);
|
||||
|
||||
return hMonitor;
|
||||
}
|
||||
|
||||
|
||||
HMONITOR
|
||||
STDCALL
|
||||
NtUserMonitorFromWindow(
|
||||
IN HWND hWnd,
|
||||
IN DWORD dwFlags)
|
||||
{
|
||||
UNIMPLEMENTED;
|
||||
return (HMONITOR)NULL;
|
||||
}
|
||||
Reference in New Issue
Block a user