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reactos/reactos/subsys/win32k/objects/dc.c
Gregor Anich 3de1bbc635 Simple implementation of some multi-monitor APIs. 
svn path=/trunk/; revision=11677
2004-11-16 16:29:21 +00:00

2377 lines
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/*
* ReactOS W32 Subsystem
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: dc.c,v 1.147 2004/11/16 16:27:49 blight Exp $
*
* DC.C - Device context functions
*
*/
#include <w32k.h>
#ifndef OBJ_COLORSPACE
#define OBJ_COLORSPACE (14)
#endif
static GDIDEVICE PrimarySurface;
/* FIXME: DCs should probably be thread safe */
/*
* DC device-independent Get/SetXXX functions
* (RJJ) swiped from WINE
*/
#define DC_GET_VAL( func_type, func_name, dc_field ) \
func_type STDCALL func_name( HDC hdc ) \
{ \
func_type ft; \
PDC dc = DC_LockDc( hdc ); \
if (!dc) \
{ \
SetLastWin32Error(ERROR_INVALID_HANDLE); \
return 0; \
} \
ft = dc->dc_field; \
DC_UnlockDc( hdc ); \
return ft; \
}
/* DC_GET_VAL_EX is used to define functions returning a POINT or a SIZE. It is
* important that the function has the right signature, for the implementation
* we can do whatever we want.
*/
#define DC_GET_VAL_EX( FuncName, ret_x, ret_y, type, ax, ay ) \
VOID FASTCALL Int##FuncName ( PDC dc, LP##type pt) \
{ \
ASSERT(dc); \
ASSERT(pt); \
pt->ax = dc->ret_x; \
pt->ay = dc->ret_y; \
} \
BOOL STDCALL NtGdi##FuncName ( HDC hdc, LP##type pt ) \
{ \
NTSTATUS Status; \
type Safept; \
PDC dc; \
if(!pt) \
{ \
SetLastWin32Error(ERROR_INVALID_PARAMETER); \
return FALSE; \
} \
if(!(dc = DC_LockDc(hdc))) \
{ \
SetLastWin32Error(ERROR_INVALID_HANDLE); \
return FALSE; \
} \
Int##FuncName( dc, &Safept); \
DC_UnlockDc(hdc); \
Status = MmCopyToCaller(pt, &Safept, sizeof( type )); \
if(!NT_SUCCESS(Status)) \
{ \
SetLastNtError(Status); \
return FALSE; \
} \
return TRUE; \
}
#define DC_SET_MODE( func_name, dc_field, min_val, max_val ) \
INT STDCALL func_name( HDC hdc, INT mode ) \
{ \
INT prevMode; \
PDC dc; \
if ((mode < min_val) || (mode > max_val)) \
{ \
SetLastWin32Error(ERROR_INVALID_PARAMETER); \
return 0; \
} \
dc = DC_LockDc ( hdc ); \
if ( !dc ) \
{ \
SetLastWin32Error(ERROR_INVALID_HANDLE); \
return 0; \
} \
prevMode = dc->dc_field; \
dc->dc_field = mode; \
DC_UnlockDc ( hdc ); \
return prevMode; \
}
// --------------------------------------------------------- File Statics
// ----------------------------------------------------- Public Functions
BOOL STDCALL
NtGdiCancelDC(HDC hDC)
{
UNIMPLEMENTED;
return FALSE;
}
HDC STDCALL
NtGdiCreateCompatableDC(HDC hDC)
{
PDC NewDC, OrigDC;
HBITMAP hBitmap;
HDC hNewDC, DisplayDC;
HRGN hVisRgn;
UNICODE_STRING DriverName;
DisplayDC = NULL;
if (hDC == NULL)
{
RtlInitUnicodeString(&DriverName, L"DISPLAY");
DisplayDC = IntGdiCreateDC(&DriverName, NULL, NULL, NULL);
if (NULL == DisplayDC)
{
return NULL;
}
hDC = DisplayDC;
}
/* Allocate a new DC based on the original DC's device */
OrigDC = DC_LockDc(hDC);
if (NULL == OrigDC)
{
if (NULL != DisplayDC)
{
NtGdiDeleteDC(DisplayDC);
}
return NULL;
}
hNewDC = DC_AllocDC(&OrigDC->DriverName);
if (NULL == hNewDC)
{
DC_UnlockDc(hDC);
if (NULL != DisplayDC)
{
NtGdiDeleteDC(DisplayDC);
}
return NULL;
}
NewDC = DC_LockDc( hNewDC );
/* Copy information from original DC to new DC */
NewDC->hSelf = hNewDC;
NewDC->PDev = OrigDC->PDev;
NewDC->DMW = OrigDC->DMW;
memcpy(NewDC->FillPatternSurfaces,
OrigDC->FillPatternSurfaces,
sizeof OrigDC->FillPatternSurfaces);
NewDC->GDIInfo = OrigDC->GDIInfo;
NewDC->DevInfo = OrigDC->DevInfo;
NewDC->w.bitsPerPixel = OrigDC->w.bitsPerPixel;
/* DriverName is copied in the AllocDC routine */
NewDC->DeviceDriver = OrigDC->DeviceDriver;
NewDC->wndOrgX = OrigDC->wndOrgX;
NewDC->wndOrgY = OrigDC->wndOrgY;
NewDC->wndExtX = OrigDC->wndExtX;
NewDC->wndExtY = OrigDC->wndExtY;
NewDC->vportOrgX = OrigDC->vportOrgX;
NewDC->vportOrgY = OrigDC->vportOrgY;
NewDC->vportExtX = OrigDC->vportExtX;
NewDC->vportExtY = OrigDC->vportExtY;
/* Create default bitmap */
if (!(hBitmap = NtGdiCreateBitmap( 1, 1, 1, NewDC->w.bitsPerPixel, NULL )))
{
DC_UnlockDc( hDC );
DC_UnlockDc( hNewDC );
DC_FreeDC( hNewDC );
if (NULL != DisplayDC)
{
NtGdiDeleteDC(DisplayDC);
}
return NULL;
}
NewDC->w.flags = DC_MEMORY;
NewDC->w.hBitmap = hBitmap;
NewDC->w.hFirstBitmap = hBitmap;
NewDC->GDIDevice = OrigDC->GDIDevice;
NewDC->w.hPalette = OrigDC->w.hPalette;
NewDC->w.textColor = OrigDC->w.textColor;
NewDC->w.textAlign = OrigDC->w.textAlign;
NewDC->w.backgroundColor = OrigDC->w.backgroundColor;
NewDC->w.backgroundMode = OrigDC->w.backgroundMode;
DC_UnlockDc( hDC );
if (NULL != DisplayDC)
{
NtGdiDeleteDC(DisplayDC);
}
DC_UnlockDc(hNewDC);
hVisRgn = NtGdiCreateRectRgn(0, 0, 1, 1);
NtGdiSelectVisRgn(hNewDC, hVisRgn);
NtGdiDeleteObject(hVisRgn);
DC_InitDC(hNewDC);
return hNewDC;
}
static BOOL FASTCALL
GetRegistryPath(PUNICODE_STRING RegistryPath, ULONG DisplayNumber)
{
RTL_QUERY_REGISTRY_TABLE QueryTable[2];
WCHAR DeviceNameBuffer[20];
NTSTATUS Status;
swprintf(DeviceNameBuffer, L"\\Device\\Video%d", DisplayNumber);
RtlInitUnicodeString(RegistryPath, NULL);
RtlZeroMemory(QueryTable, sizeof(QueryTable));
QueryTable[0].Flags = RTL_QUERY_REGISTRY_REQUIRED | RTL_QUERY_REGISTRY_DIRECT;
QueryTable[0].Name = DeviceNameBuffer;
QueryTable[0].EntryContext = RegistryPath;
Status = RtlQueryRegistryValues(RTL_REGISTRY_DEVICEMAP,
L"VIDEO",
QueryTable,
NULL,
NULL);
if (! NT_SUCCESS(Status))
{
DPRINT1("No \\Device\\Video%d value in DEVICEMAP\\VIDEO found\n", DisplayNumber);
return FALSE;
}
DPRINT("RegistryPath %S\n", RegistryPath->Buffer);
return TRUE;
}
static BOOL FASTCALL
FindDriverFileNames(PUNICODE_STRING DriverFileNames, ULONG DisplayNumber)
{
RTL_QUERY_REGISTRY_TABLE QueryTable[2];
UNICODE_STRING RegistryPath;
NTSTATUS Status;
if (! GetRegistryPath(&RegistryPath, DisplayNumber))
{
DPRINT("GetRegistryPath failed\n");
return FALSE;
}
RtlZeroMemory(QueryTable, sizeof(QueryTable));
QueryTable[0].Flags = RTL_QUERY_REGISTRY_REQUIRED | RTL_QUERY_REGISTRY_DIRECT;
QueryTable[0].Name = L"InstalledDisplayDrivers";
QueryTable[0].EntryContext = DriverFileNames;
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
RegistryPath.Buffer,
QueryTable,
NULL,
NULL);
RtlFreeUnicodeString(&RegistryPath);
if (! NT_SUCCESS(Status))
{
DPRINT1("No InstalledDisplayDrivers value in service entry found\n");
return FALSE;
}
DPRINT("DriverFileNames %S\n", DriverFileNames->Buffer);
return TRUE;
}
static NTSTATUS STDCALL
DevModeCallback(IN PWSTR ValueName,
IN ULONG ValueType,
IN PVOID ValueData,
IN ULONG ValueLength,
IN PVOID Context,
IN PVOID EntryContext)
{
PDEVMODEW DevMode = (PDEVMODEW) Context;
DPRINT("Found registry value for name %S: type %d, length %d\n",
ValueName, ValueType, ValueLength);
if (REG_DWORD == ValueType && sizeof(DWORD) == ValueLength)
{
if (0 == _wcsicmp(ValueName, L"DefaultSettings.BitsPerPel"))
{
DevMode->dmBitsPerPel = *((DWORD *) ValueData);
}
else if (0 == _wcsicmp(ValueName, L"DefaultSettings.Flags"))
{
DevMode->dmDisplayFlags = *((DWORD *) ValueData);
}
else if (0 == _wcsicmp(ValueName, L"DefaultSettings.VRefresh"))
{
DevMode->dmDisplayFrequency = *((DWORD *) ValueData);
}
else if (0 == _wcsicmp(ValueName, L"DefaultSettings.XPanning"))
{
DevMode->dmPanningWidth = *((DWORD *) ValueData);
}
else if (0 == _wcsicmp(ValueName, L"DefaultSettings.XResolution"))
{
DevMode->dmPelsWidth = *((DWORD *) ValueData);
}
else if (0 == _wcsicmp(ValueName, L"DefaultSettings.YPanning"))
{
DevMode->dmPanningHeight = *((DWORD *) ValueData);
}
else if (0 == _wcsicmp(ValueName, L"DefaultSettings.YResolution"))
{
DevMode->dmPelsHeight = *((DWORD *) ValueData);
}
}
return STATUS_SUCCESS;
}
static BOOL FASTCALL
SetupDevMode(PDEVMODEW DevMode, ULONG DisplayNumber)
{
static WCHAR RegistryMachineSystem[] = L"\\REGISTRY\\MACHINE\\SYSTEM\\";
static WCHAR CurrentControlSet[] = L"CURRENTCONTROLSET\\";
static WCHAR ControlSet[] = L"CONTROLSET";
static WCHAR Insert[] = L"Hardware Profiles\\Current\\System\\CurrentControlSet\\";
UNICODE_STRING RegistryPath;
BOOL Valid;
PWCHAR AfterControlSet;
PWCHAR ProfilePath;
RTL_QUERY_REGISTRY_TABLE QueryTable[2];
NTSTATUS Status;
if (! GetRegistryPath(&RegistryPath, DisplayNumber))
{
DPRINT("GetRegistryPath failed\n");
return FALSE;
}
Valid = (0 == _wcsnicmp(RegistryPath.Buffer, RegistryMachineSystem,
wcslen(RegistryMachineSystem)));
if (Valid)
{
AfterControlSet = RegistryPath.Buffer + wcslen(RegistryMachineSystem);
if (0 == _wcsnicmp(AfterControlSet, CurrentControlSet, wcslen(CurrentControlSet)))
{
AfterControlSet += wcslen(CurrentControlSet);
}
else if (0 == _wcsnicmp(AfterControlSet, ControlSet, wcslen(ControlSet)))
{
AfterControlSet += wcslen(ControlSet);
while (L'0' <= *AfterControlSet && L'9' <= *AfterControlSet)
{
AfterControlSet++;
}
Valid = (L'\\' == *AfterControlSet);
AfterControlSet++;
}
else
{
Valid = FALSE;
}
}
if (Valid)
{
ProfilePath = ExAllocatePoolWithTag(PagedPool,
(wcslen(RegistryPath.Buffer) +
wcslen(Insert) + 1) * sizeof(WCHAR),
TAG_DC);
if (NULL != ProfilePath)
{
wcsncpy(ProfilePath, RegistryPath.Buffer, AfterControlSet - RegistryPath.Buffer);
wcscpy(ProfilePath + (AfterControlSet - RegistryPath.Buffer), Insert);
wcscat(ProfilePath, AfterControlSet);
RtlZeroMemory(QueryTable, sizeof(QueryTable));
QueryTable[0].QueryRoutine = DevModeCallback;
QueryTable[0].Flags = 0;
QueryTable[0].Name = NULL;
QueryTable[0].EntryContext = NULL;
QueryTable[0].DefaultType = REG_NONE;
QueryTable[0].DefaultData = NULL;
QueryTable[0].DefaultLength = 0;
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
ProfilePath,
QueryTable,
DevMode,
NULL);
if (! NT_SUCCESS(Status))
{
DPRINT("RtlQueryRegistryValues for %S failed with status 0x%08x\n",
ProfilePath, Status);
Valid = FALSE;
}
else
{
DPRINT("dmBitsPerPel %d dmDisplayFrequency %d dmPelsWidth %d dmPelsHeight %d\n",
DevMode->dmBitsPerPel, DevMode->dmDisplayFrequency,
DevMode->dmPelsWidth, DevMode->dmPelsHeight);
if (0 == DevMode->dmBitsPerPel || 0 == DevMode->dmDisplayFrequency
|| 0 == DevMode->dmPelsWidth || 0 == DevMode->dmPelsHeight)
{
DPRINT("Not all required devmode members are set\n");
Valid = FALSE;
}
}
ExFreePool(ProfilePath);
}
else
{
Valid = FALSE;
}
}
else
{
DPRINT1("Unparsable registry path %S in DEVICEMAP\\VIDEO0", RegistryPath.Buffer);
}
RtlFreeUnicodeString(&RegistryPath);
if (! Valid)
{
RtlZeroMemory(DevMode, sizeof(DEVMODEW));
}
return Valid;
}
BOOL FASTCALL
IntCreatePrimarySurface()
{
PGD_ENABLEDRIVER GDEnableDriver;
DRVENABLEDATA DED;
SURFOBJ *SurfObj;
SIZEL SurfSize;
UNICODE_STRING DriverFileNames;
PWSTR CurrentName;
BOOL GotDriver;
BOOL DoDefault;
ULONG DisplayNumber;
for (DisplayNumber = 0; ; DisplayNumber++)
{
DPRINT("Trying to load display driver no. %d\n", DisplayNumber);
RtlZeroMemory(&PrimarySurface, sizeof(PrimarySurface));
PrimarySurface.VideoFileObject = DRIVER_FindMPDriver(DisplayNumber);
/* Open the miniport driver */
if (PrimarySurface.VideoFileObject == NULL)
{
DPRINT1("FindMPDriver failed\n");
return FALSE;
}
/* Retrieve DDI driver names from registry */
RtlInitUnicodeString(&DriverFileNames, NULL);
if (!FindDriverFileNames(&DriverFileNames, DisplayNumber))
{
DPRINT1("FindDriverFileNames failed\n");
/* return FALSE; */
continue;
}
/*
* DriverFileNames may be a list of drivers in REG_SZ_MULTI format,
* scan all of them until a good one found.
*/
CurrentName = DriverFileNames.Buffer;
GotDriver = FALSE;
while (!GotDriver &&
CurrentName < DriverFileNames.Buffer + (DriverFileNames.Length / sizeof (WCHAR)))
{
/* Get the DDI driver's entry point */
GDEnableDriver = DRIVER_FindDDIDriver(CurrentName);
if (NULL == GDEnableDriver)
{
DPRINT("FindDDIDriver failed for %S\n", CurrentName);
}
else
{
/* Call DDI driver's EnableDriver function */
RtlZeroMemory(&DED, sizeof(DED));
if (! GDEnableDriver(DDI_DRIVER_VERSION_NT5_01, sizeof(DED), &DED))
{
DPRINT("DrvEnableDriver failed for %S\n", CurrentName);
}
else
{
GotDriver = TRUE;
}
}
if (! GotDriver)
{
/* Skip to the next name but never get past the Unicode string */
while (L'\0' != *CurrentName &&
CurrentName < DriverFileNames.Buffer + (DriverFileNames.Length / sizeof (WCHAR)))
{
CurrentName++;
}
if (CurrentName < DriverFileNames.Buffer + (DriverFileNames.Length / sizeof (WCHAR)))
{
CurrentName++;
}
}
}
RtlFreeUnicodeString(&DriverFileNames);
if (!GotDriver)
{
ObDereferenceObject(PrimarySurface.VideoFileObject);
DPRINT1("No suitable DDI driver found\n");
/* return FALSE; */
continue;
}
DPRINT("Display driver %S loaded\n", CurrentName);
DPRINT("Building DDI Functions\n");
/* Construct DDI driver function dispatch table */
if (!DRIVER_BuildDDIFunctions(&DED, &PrimarySurface.DriverFunctions))
{
ObDereferenceObject(PrimarySurface.VideoFileObject);
DPRINT1("BuildDDIFunctions failed\n");
return FALSE;
}
/* Allocate a phyical device handle from the driver */
PrimarySurface.DMW.dmSize = sizeof (PrimarySurface.DMW);
if (SetupDevMode(&PrimarySurface.DMW, DisplayNumber))
{
PrimarySurface.PDev = PrimarySurface.DriverFunctions.EnablePDEV(
&PrimarySurface.DMW,
L"",
HS_DDI_MAX,
PrimarySurface.FillPatterns,
sizeof(PrimarySurface.GDIInfo),
(ULONG *) &PrimarySurface.GDIInfo,
sizeof(PrimarySurface.DevInfo),
&PrimarySurface.DevInfo,
NULL,
L"",
(HANDLE) (PrimarySurface.VideoFileObject->DeviceObject));
DoDefault = (NULL == PrimarySurface.PDev);
if (DoDefault)
{
DPRINT1("DrvEnablePDev with registry parameters failed\n");
}
}
else
{
DoDefault = TRUE;
}
if (DoDefault)
{
RtlZeroMemory(&(PrimarySurface.DMW), sizeof(DEVMODEW));
PrimarySurface.DMW.dmSize = sizeof (PrimarySurface.DMW);
PrimarySurface.PDev = PrimarySurface.DriverFunctions.EnablePDEV(
&PrimarySurface.DMW,
L"",
HS_DDI_MAX,
PrimarySurface.FillPatterns,
sizeof(PrimarySurface.GDIInfo),
(ULONG *) &PrimarySurface.GDIInfo,
sizeof(PrimarySurface.DevInfo),
&PrimarySurface.DevInfo,
NULL,
L"",
(HANDLE) (PrimarySurface.VideoFileObject->DeviceObject));
if (NULL == PrimarySurface.PDev)
{
ObDereferenceObject(PrimarySurface.VideoFileObject);
DPRINT1("DrvEnablePDEV with default parameters failed\n");
DPRINT1("Perhaps DDI driver doesn't match miniport driver?\n");
/* return FALSE; */
continue;
}
}
if (0 == PrimarySurface.GDIInfo.ulLogPixelsX)
{
DPRINT("Adjusting GDIInfo.ulLogPixelsX\n");
PrimarySurface.GDIInfo.ulLogPixelsX = 96;
}
if (0 == PrimarySurface.GDIInfo.ulLogPixelsY)
{
DPRINT("Adjusting GDIInfo.ulLogPixelsY\n");
PrimarySurface.GDIInfo.ulLogPixelsY = 96;
}
DPRINT("calling completePDev\n");
/* Complete initialization of the physical device */
PrimarySurface.DriverFunctions.CompletePDEV(
PrimarySurface.PDev,
(HDEV)&PrimarySurface);
DPRINT("calling DRIVER_ReferenceDriver\n");
DRIVER_ReferenceDriver(L"DISPLAY");
DPRINT("calling EnableSurface\n");
/* Enable the drawing surface */
PrimarySurface.Handle =
PrimarySurface.DriverFunctions.EnableSurface(PrimarySurface.PDev);
if (NULL == PrimarySurface.Handle)
{
/* PrimarySurface.DriverFunctions.AssertMode(PrimarySurface.PDev, FALSE);*/
PrimarySurface.DriverFunctions.DisablePDEV(PrimarySurface.PDev);
ObDereferenceObject(PrimarySurface.VideoFileObject);
DPRINT1("DrvEnableSurface failed\n");
/* return FALSE; */
continue;
}
/* attach monitor */
IntAttachMonitor(&PrimarySurface, DisplayNumber);
SurfObj = EngLockSurface((HSURF)PrimarySurface.Handle);
SurfObj->dhpdev = PrimarySurface.PDev;
SurfSize = SurfObj->sizlBitmap;
EngUnlockSurface(SurfObj);
IntShowDesktop(IntGetActiveDesktop(), SurfSize.cx, SurfSize.cy);
break;
}
return TRUE;
}
VOID FASTCALL
IntDestroyPrimarySurface()
{
DRIVER_UnreferenceDriver(L"DISPLAY");
/* detach monitor */
IntDetachMonitor(&PrimarySurface);
/*
* FIXME: Hide a mouse pointer there. Also because we have to prevent
* memory leaks with the Eng* mouse routines.
*/
DPRINT("Reseting display\n" );
PrimarySurface.DriverFunctions.AssertMode(PrimarySurface.PDev, FALSE);
PrimarySurface.DriverFunctions.DisableSurface(PrimarySurface.PDev);
PrimarySurface.DriverFunctions.DisablePDEV(PrimarySurface.PDev);
DceEmptyCache();
ObDereferenceObject(PrimarySurface.VideoFileObject);
}
HDC FASTCALL
IntGdiCreateDC(PUNICODE_STRING Driver,
PUNICODE_STRING Device,
PUNICODE_STRING Output,
CONST PDEVMODEW InitData)
{
HDC hNewDC;
PDC NewDC;
HDC hDC = NULL;
SURFOBJ *SurfObj;
HRGN hVisRgn;
UNICODE_STRING StdDriver;
RtlInitUnicodeString(&StdDriver, L"DISPLAY");
if (NULL == Driver || 0 == RtlCompareUnicodeString(Driver, &StdDriver, TRUE))
{
if (! IntGraphicsCheck(TRUE))
{
DPRINT1("Unable to initialize graphics, returning NULL dc\n");
return NULL;
}
}
/* Check for existing DC object */
if ((hNewDC = DC_FindOpenDC(Driver)) != NULL)
{
hDC = hNewDC;
return NtGdiCreateCompatableDC(hDC);
}
if (Driver != NULL && Driver->Buffer != NULL)
{
DPRINT("NAME: %S\n", Driver->Buffer); // FIXME: Should not crash if NULL
}
/* Allocate a DC object */
if ((hNewDC = DC_AllocDC(Driver)) == NULL)
{
return NULL;
}
NewDC = DC_LockDc( hNewDC );
ASSERT( NewDC );
NewDC->DMW = PrimarySurface.DMW;
NewDC->DevInfo = &PrimarySurface.DevInfo;
NewDC->GDIInfo = &PrimarySurface.GDIInfo;
memcpy(NewDC->FillPatternSurfaces, PrimarySurface.FillPatterns,
sizeof(NewDC->FillPatternSurfaces));
NewDC->PDev = PrimarySurface.PDev;
NewDC->GDIDevice = (HDEV)&PrimarySurface;
NewDC->DriverFunctions = PrimarySurface.DriverFunctions;
NewDC->w.hBitmap = PrimarySurface.Handle;
NewDC->DMW.dmSize = sizeof(NewDC->DMW);
NewDC->DMW.dmFields = 0x000fc000;
/* FIXME: get mode selection information from somewhere */
NewDC->DMW.dmLogPixels = 96;
SurfObj = EngLockSurface((HSURF)PrimarySurface.Handle);
NewDC->DMW.dmBitsPerPel = BitsPerFormat(SurfObj->iBitmapFormat);
NewDC->DMW.dmPelsWidth = SurfObj->sizlBitmap.cx;
NewDC->DMW.dmPelsHeight = SurfObj->sizlBitmap.cy;
NewDC->DMW.dmDisplayFlags = 0;
NewDC->DMW.dmDisplayFrequency = 0;
NewDC->w.bitsPerPixel = NewDC->DMW.dmBitsPerPel; // FIXME: set this here??
NewDC->w.hPalette = NewDC->DevInfo->hpalDefault;
DPRINT("Bits per pel: %u\n", NewDC->w.bitsPerPixel);
DC_UnlockDc( hNewDC );
hVisRgn = NtGdiCreateRectRgn(0, 0, SurfObj->sizlBitmap.cx,
SurfObj->sizlBitmap.cy);
NtGdiSelectVisRgn(hNewDC, hVisRgn);
NtGdiDeleteObject(hVisRgn);
/* Initialize the DC state */
DC_InitDC(hNewDC);
NtGdiSetTextColor(hNewDC, RGB(0, 0, 0));
NtGdiSetTextAlign(hNewDC, TA_TOP);
NtGdiSetBkColor(hNewDC, RGB(255, 255, 255));
NtGdiSetBkMode(hNewDC, OPAQUE);
EngUnlockSurface(SurfObj);
return hNewDC;
}
HDC STDCALL
NtGdiCreateDC(PUNICODE_STRING Driver,
PUNICODE_STRING Device,
PUNICODE_STRING Output,
CONST PDEVMODEW InitData)
{
UNICODE_STRING SafeDriver, SafeDevice;
DEVMODEW SafeInitData;
HDC Ret;
NTSTATUS Status;
if(InitData)
{
Status = MmCopyFromCaller(&SafeInitData, InitData, sizeof(DEVMODEW));
if(!NT_SUCCESS(Status))
{
SetLastNtError(Status);
return NULL;
}
/* FIXME - InitData can have some more bytes! */
}
if(Driver)
{
Status = IntSafeCopyUnicodeString(&SafeDriver, Driver);
if(!NT_SUCCESS(Status))
{
SetLastNtError(Status);
return NULL;
}
}
if(Device)
{
Status = IntSafeCopyUnicodeString(&SafeDevice, Device);
if(!NT_SUCCESS(Status))
{
RtlFreeUnicodeString(&SafeDriver);
SetLastNtError(Status);
return NULL;
}
}
Ret = IntGdiCreateDC(&SafeDriver, &SafeDevice, NULL, &SafeInitData);
return Ret;
}
HDC STDCALL
NtGdiCreateIC(PUNICODE_STRING Driver,
PUNICODE_STRING Device,
PUNICODE_STRING Output,
CONST PDEVMODEW DevMode)
{
/* FIXME: this should probably do something else... */
return NtGdiCreateDC(Driver, Device, Output, DevMode);
}
BOOL STDCALL
NtGdiDeleteDC(HDC DCHandle)
{
PDC DCToDelete;
DCToDelete = DC_LockDc(DCHandle);
if (DCToDelete == NULL)
{
return FALSE;
}
DPRINT( "Deleting DC\n" );
CHECKPOINT;
/* First delete all saved DCs */
while (DCToDelete->saveLevel)
{
PDC savedDC;
HDC savedHDC;
savedHDC = DC_GetNextDC (DCToDelete);
savedDC = DC_LockDc (savedHDC);
if (savedDC == NULL)
{
break;
}
DC_SetNextDC (DCToDelete, DC_GetNextDC (savedDC));
DCToDelete->saveLevel--;
DC_UnlockDc( savedHDC );
NtGdiDeleteDC (savedHDC);
}
/* Free GDI resources allocated to this DC */
if (!(DCToDelete->w.flags & DC_SAVED))
{
/*
NtGdiSelectObject (DCHandle, STOCK_BLACK_PEN);
NtGdiSelectObject (DCHandle, STOCK_WHITE_BRUSH);
NtGdiSelectObject (DCHandle, STOCK_SYSTEM_FONT);
DC_LockDC (DCHandle); NtGdiSelectObject does not recognize stock objects yet */
if (DCToDelete->w.flags & DC_MEMORY)
{
NtGdiDeleteObject (DCToDelete->w.hFirstBitmap);
}
if (DCToDelete->XlateBrush != NULL)
EngDeleteXlate(DCToDelete->XlateBrush);
if (DCToDelete->XlatePen != NULL)
EngDeleteXlate(DCToDelete->XlatePen);
}
if (DCToDelete->w.hClipRgn)
{
NtGdiDeleteObject (DCToDelete->w.hClipRgn);
}
if (DCToDelete->w.hVisRgn)
{
NtGdiDeleteObject (DCToDelete->w.hVisRgn);
}
if (NULL != DCToDelete->CombinedClip)
{
IntEngDeleteClipRegion(DCToDelete->CombinedClip);
}
if (DCToDelete->w.hGCClipRgn)
{
NtGdiDeleteObject (DCToDelete->w.hGCClipRgn);
}
#if 0 /* FIXME */
PATH_DestroyGdiPath (&DCToDelete->w.path);
#endif
DC_UnlockDc( DCHandle );
DC_FreeDC ( DCHandle );
return TRUE;
}
INT STDCALL
NtGdiDrawEscape(HDC hDC,
INT nEscape,
INT cbInput,
LPCSTR lpszInData)
{
UNIMPLEMENTED;
return 0;
}
INT STDCALL
NtGdiEnumObjects(HDC hDC,
INT ObjectType,
GOBJENUMPROC ObjectFunc,
LPARAM lParam)
{
UNIMPLEMENTED;
return 0;
}
DC_GET_VAL( COLORREF, NtGdiGetBkColor, w.backgroundColor )
DC_GET_VAL( INT, NtGdiGetBkMode, w.backgroundMode )
DC_GET_VAL_EX( GetBrushOrgEx, w.brushOrgX, w.brushOrgY, POINT, x, y )
DC_GET_VAL( HRGN, NtGdiGetClipRgn, w.hClipRgn )
HGDIOBJ STDCALL
NtGdiGetCurrentObject(HDC hDC, UINT ObjectType)
{
HGDIOBJ SelObject;
DC *dc;
if(!(dc = DC_LockDc(hDC)))
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return NULL;
}
switch(ObjectType)
{
case OBJ_PEN:
SelObject = dc->w.hPen;
break;
case OBJ_BRUSH:
SelObject = dc->w.hBrush;
break;
case OBJ_PAL:
DPRINT1("FIXME: NtGdiGetCurrentObject() ObjectType OBJ_PAL not supported yet!\n");
SelObject = NULL;
break;
case OBJ_FONT:
SelObject = dc->w.hFont;
break;
case OBJ_BITMAP:
SelObject = dc->w.hBitmap;
break;
case OBJ_COLORSPACE:
DPRINT1("FIXME: NtGdiGetCurrentObject() ObjectType OBJ_COLORSPACE not supported yet!\n");
SelObject = NULL;
break;
default:
SelObject = NULL;
SetLastWin32Error(ERROR_INVALID_PARAMETER);
break;
}
DC_UnlockDc(hDC);
return SelObject;
}
DC_GET_VAL_EX ( GetCurrentPositionEx, w.CursPosX, w.CursPosY, POINT, x, y )
BOOL FASTCALL
IntGdiGetDCOrgEx(DC *dc, LPPOINT Point)
{
Point->x = dc->w.DCOrgX;
Point->y = dc->w.DCOrgY;
return TRUE;
}
BOOL STDCALL
NtGdiGetDCOrgEx(HDC hDC, LPPOINT Point)
{
BOOL Ret;
DC *dc;
POINT SafePoint;
NTSTATUS Status;
if(!Point)
{
SetLastWin32Error(ERROR_INVALID_PARAMETER);
return FALSE;
}
dc = DC_LockDc(hDC);
if(!dc)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
Ret = IntGdiGetDCOrgEx(dc, &SafePoint);
Status = MmCopyToCaller(Point, &SafePoint, sizeof(POINT));
if(!NT_SUCCESS(Status))
{
SetLastNtError(Status);
DC_UnlockDc(hDC);
return FALSE;
}
DC_UnlockDc(hDC);
return Ret;
}
COLORREF STDCALL
NtGdiSetBkColor(HDC hDC, COLORREF color)
{
COLORREF oldColor;
PDC dc;
HBRUSH hBrush;
if (!(dc = DC_LockDc(hDC)))
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return CLR_INVALID;
}
oldColor = dc->w.backgroundColor;
dc->w.backgroundColor = color;
hBrush = dc->w.hBrush;
DC_UnlockDc ( hDC );
NtGdiSelectObject(hDC, hBrush);
return oldColor;
}
HDC STDCALL
NtGdiGetDCState(HDC hDC)
{
PDC newdc, dc;
HDC hnewdc;
dc = DC_LockDc(hDC);
if (dc == NULL)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return 0;
}
hnewdc = DC_AllocDC(NULL);
if (hnewdc == NULL)
{
DC_UnlockDc( hDC );
return 0;
}
newdc = DC_LockDc( hnewdc );
ASSERT( newdc );
newdc->w.flags = dc->w.flags | DC_SAVED;
newdc->w.hPen = dc->w.hPen;
newdc->w.hBrush = dc->w.hBrush;
newdc->w.hFont = dc->w.hFont;
newdc->w.hBitmap = dc->w.hBitmap;
newdc->w.hFirstBitmap = dc->w.hFirstBitmap;
#if 0
newdc->w.hDevice = dc->w.hDevice;
#endif
newdc->w.hPalette = dc->w.hPalette;
newdc->w.totalExtent = dc->w.totalExtent;
newdc->w.bitsPerPixel = dc->w.bitsPerPixel;
newdc->w.ROPmode = dc->w.ROPmode;
newdc->w.polyFillMode = dc->w.polyFillMode;
newdc->w.stretchBltMode = dc->w.stretchBltMode;
newdc->w.relAbsMode = dc->w.relAbsMode;
newdc->w.backgroundMode = dc->w.backgroundMode;
newdc->w.backgroundColor = dc->w.backgroundColor;
newdc->w.textColor = dc->w.textColor;
newdc->w.brushOrgX = dc->w.brushOrgX;
newdc->w.brushOrgY = dc->w.brushOrgY;
newdc->w.textAlign = dc->w.textAlign;
newdc->w.charExtra = dc->w.charExtra;
newdc->w.breakTotalExtra = dc->w.breakTotalExtra;
newdc->w.breakCount = dc->w.breakCount;
newdc->w.breakExtra = dc->w.breakExtra;
newdc->w.breakRem = dc->w.breakRem;
newdc->w.MapMode = dc->w.MapMode;
newdc->w.GraphicsMode = dc->w.GraphicsMode;
#if 0
/* Apparently, the DC origin is not changed by [GS]etDCState */
newdc->w.DCOrgX = dc->w.DCOrgX;
newdc->w.DCOrgY = dc->w.DCOrgY;
#endif
newdc->w.CursPosX = dc->w.CursPosX;
newdc->w.CursPosY = dc->w.CursPosY;
newdc->w.ArcDirection = dc->w.ArcDirection;
newdc->w.xformWorld2Wnd = dc->w.xformWorld2Wnd;
newdc->w.xformWorld2Vport = dc->w.xformWorld2Vport;
newdc->w.xformVport2World = dc->w.xformVport2World;
newdc->w.vport2WorldValid = dc->w.vport2WorldValid;
newdc->wndOrgX = dc->wndOrgX;
newdc->wndOrgY = dc->wndOrgY;
newdc->wndExtX = dc->wndExtX;
newdc->wndExtY = dc->wndExtY;
newdc->vportOrgX = dc->vportOrgX;
newdc->vportOrgY = dc->vportOrgY;
newdc->vportExtX = dc->vportExtX;
newdc->vportExtY = dc->vportExtY;
newdc->hSelf = hnewdc;
newdc->saveLevel = 0;
#if 0
PATH_InitGdiPath( &newdc->w.path );
#endif
/* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
newdc->w.hGCClipRgn = newdc->w.hVisRgn = 0;
if (dc->w.hClipRgn)
{
newdc->w.hClipRgn = NtGdiCreateRectRgn( 0, 0, 0, 0 );
NtGdiCombineRgn( newdc->w.hClipRgn, dc->w.hClipRgn, 0, RGN_COPY );
}
DC_UnlockDc( hnewdc );
DC_UnlockDc( hDC );
return hnewdc;
}
VOID
STDCALL
NtGdiSetDCState ( HDC hDC, HDC hDCSave )
{
PDC dc, dcs;
dc = DC_LockDc ( hDC );
if ( dc )
{
dcs = DC_LockDc ( hDCSave );
if ( dcs )
{
if ( dcs->w.flags & DC_SAVED )
{
dc->w.flags = dcs->w.flags & ~DC_SAVED;
dc->w.hFirstBitmap = dcs->w.hFirstBitmap;
#if 0
dc->w.hDevice = dcs->w.hDevice;
#endif
dc->w.totalExtent = dcs->w.totalExtent;
dc->w.ROPmode = dcs->w.ROPmode;
dc->w.polyFillMode = dcs->w.polyFillMode;
dc->w.stretchBltMode = dcs->w.stretchBltMode;
dc->w.relAbsMode = dcs->w.relAbsMode;
dc->w.backgroundMode = dcs->w.backgroundMode;
dc->w.backgroundColor = dcs->w.backgroundColor;
dc->w.textColor = dcs->w.textColor;
dc->w.brushOrgX = dcs->w.brushOrgX;
dc->w.brushOrgY = dcs->w.brushOrgY;
dc->w.textAlign = dcs->w.textAlign;
dc->w.charExtra = dcs->w.charExtra;
dc->w.breakTotalExtra = dcs->w.breakTotalExtra;
dc->w.breakCount = dcs->w.breakCount;
dc->w.breakExtra = dcs->w.breakExtra;
dc->w.breakRem = dcs->w.breakRem;
dc->w.MapMode = dcs->w.MapMode;
dc->w.GraphicsMode = dcs->w.GraphicsMode;
#if 0
/* Apparently, the DC origin is not changed by [GS]etDCState */
dc->w.DCOrgX = dcs->w.DCOrgX;
dc->w.DCOrgY = dcs->w.DCOrgY;
#endif
dc->w.CursPosX = dcs->w.CursPosX;
dc->w.CursPosY = dcs->w.CursPosY;
dc->w.ArcDirection = dcs->w.ArcDirection;
dc->w.xformWorld2Wnd = dcs->w.xformWorld2Wnd;
dc->w.xformWorld2Vport = dcs->w.xformWorld2Vport;
dc->w.xformVport2World = dcs->w.xformVport2World;
dc->w.vport2WorldValid = dcs->w.vport2WorldValid;
dc->wndOrgX = dcs->wndOrgX;
dc->wndOrgY = dcs->wndOrgY;
dc->wndExtX = dcs->wndExtX;
dc->wndExtY = dcs->wndExtY;
dc->vportOrgX = dcs->vportOrgX;
dc->vportOrgY = dcs->vportOrgY;
dc->vportExtX = dcs->vportExtX;
dc->vportExtY = dcs->vportExtY;
if (!(dc->w.flags & DC_MEMORY))
{
dc->w.bitsPerPixel = dcs->w.bitsPerPixel;
}
#if 0
if (dcs->w.hClipRgn)
{
if (!dc->w.hClipRgn)
{
dc->w.hClipRgn = NtGdiCreateRectRgn( 0, 0, 0, 0 );
}
NtGdiCombineRgn( dc->w.hClipRgn, dcs->w.hClipRgn, 0, RGN_COPY );
}
else
{
if (dc->w.hClipRgn)
{
NtGdiDeleteObject( dc->w.hClipRgn );
}
dc->w.hClipRgn = 0;
}
CLIPPING_UpdateGCRegion( dc );
DC_UnlockDc ( hDC );
#else
DC_UnlockDc ( hDC );
NtGdiSelectClipRgn(hDC, dcs->w.hClipRgn);
#endif
NtGdiSelectObject( hDC, dcs->w.hBitmap );
NtGdiSelectObject( hDC, dcs->w.hBrush );
NtGdiSelectObject( hDC, dcs->w.hFont );
NtGdiSelectObject( hDC, dcs->w.hPen );
NtGdiSetBkColor( hDC, dcs->w.backgroundColor);
NtGdiSetTextColor( hDC, dcs->w.textColor);
NtGdiSelectPalette( hDC, dcs->w.hPalette, FALSE );
#if 0
GDISelectPalette16( hDC, dcs->w.hPalette, FALSE );
#endif
} else {
DC_UnlockDc(hDC);
}
DC_UnlockDc ( hDCSave );
} else {
DC_UnlockDc ( hDC );
SetLastWin32Error(ERROR_INVALID_HANDLE);
}
}
else
SetLastWin32Error(ERROR_INVALID_HANDLE);
}
INT STDCALL
NtGdiGetDeviceCaps(HDC hDC,
INT Index)
{
PDC dc;
INT ret;
POINT pt;
dc = DC_LockDc(hDC);
if (dc == NULL)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return 0;
}
/* Retrieve capability */
switch (Index)
{
case DRIVERVERSION:
ret = dc->GDIInfo->ulVersion;
break;
case TECHNOLOGY:
ret = dc->GDIInfo->ulTechnology;
break;
case HORZSIZE:
ret = dc->GDIInfo->ulHorzSize;
break;
case VERTSIZE:
ret = dc->GDIInfo->ulVertSize;
break;
case HORZRES:
ret = dc->GDIInfo->ulHorzRes;
break;
case VERTRES:
ret = dc->GDIInfo->ulVertRes;
break;
case LOGPIXELSX:
ret = dc->GDIInfo->ulLogPixelsX;
break;
case LOGPIXELSY:
ret = dc->GDIInfo->ulLogPixelsY;
break;
case BITSPIXEL:
ret = dc->GDIInfo->cBitsPixel;
break;
case PLANES:
ret = dc->GDIInfo->cPlanes;
break;
case NUMBRUSHES:
UNIMPLEMENTED; /* FIXME */
break;
case NUMPENS:
UNIMPLEMENTED; /* FIXME */
break;
case NUMFONTS:
UNIMPLEMENTED; /* FIXME */
break;
case NUMCOLORS:
ret = dc->GDIInfo->ulNumColors;
break;
case ASPECTX:
ret = dc->GDIInfo->ulAspectX;
break;
case ASPECTY:
ret = dc->GDIInfo->ulAspectY;
break;
case ASPECTXY:
ret = dc->GDIInfo->ulAspectXY;
break;
case PDEVICESIZE:
UNIMPLEMENTED; /* FIXME */
break;
case CLIPCAPS:
UNIMPLEMENTED; /* FIXME */
break;
case SIZEPALETTE:
ret = dc->GDIInfo->ulNumPalReg; /* FIXME not sure */
break;
case NUMRESERVED:
ret = 0;
break;
case COLORRES:
UNIMPLEMENTED; /* FIXME */
break;
case PHYSICALWIDTH:
if(NtGdiEscape(hDC, GETPHYSPAGESIZE, 0, NULL, (LPVOID)&pt) > 0)
{
ret = pt.x;
}
else
{
ret = 0;
}
break;
case PHYSICALHEIGHT:
if(NtGdiEscape(hDC, GETPHYSPAGESIZE, 0, NULL, (LPVOID)&pt) > 0)
{
ret = pt.y;
}
else
{
ret = 0;
}
break;
case PHYSICALOFFSETX:
if(NtGdiEscape(hDC, GETPRINTINGOFFSET, 0, NULL, (LPVOID)&pt) > 0)
{
ret = pt.x;
}
else
{
ret = 0;
}
break;
case PHYSICALOFFSETY:
if(NtGdiEscape(hDC, GETPRINTINGOFFSET, 0, NULL, (LPVOID)&pt) > 0)
{
ret = pt.y;
}
else
{
ret = 0;
}
break;
case VREFRESH:
UNIMPLEMENTED; /* FIXME */
break;
case SCALINGFACTORX:
if(NtGdiEscape(hDC, GETSCALINGFACTOR, 0, NULL, (LPVOID)&pt) > 0)
{
ret = pt.x;
}
else
{
ret = 0;
}
break;
case SCALINGFACTORY:
if(NtGdiEscape(hDC, GETSCALINGFACTOR, 0, NULL, (LPVOID)&pt) > 0)
{
ret = pt.y;
}
else
{
ret = 0;
}
break;
case RASTERCAPS:
ret = dc->GDIInfo->flRaster;
break;
case CURVECAPS:
UNIMPLEMENTED; /* FIXME */
break;
case LINECAPS:
UNIMPLEMENTED; /* FIXME */
break;
case POLYGONALCAPS:
UNIMPLEMENTED; /* FIXME */
break;
case TEXTCAPS:
ret = dc->GDIInfo->flTextCaps;
break;
default:
ret = 0;
break;
}
DPRINT("(%04x,%d): returning %d\n", hDC, Index, ret);
DC_UnlockDc( hDC );
return ret;
}
DC_GET_VAL( INT, NtGdiGetMapMode, w.MapMode )
DC_GET_VAL( INT, NtGdiGetPolyFillMode, w.polyFillMode )
INT FASTCALL
IntGdiGetObject(HANDLE Handle, INT Count, LPVOID Buffer)
{
PGDIOBJHDR GdiObject;
INT Result = 0;
DWORD ObjectType;
GdiObject = GDIOBJ_LockObj(Handle, GDI_OBJECT_TYPE_DONTCARE);
if (NULL == GdiObject)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return 0;
}
ObjectType = GDIOBJ_GetObjectType(Handle);
switch (ObjectType)
{
#if 0
case GDI_OBJECT_TYPE_PEN:
Result = PEN_GetObject((PENOBJ *) GdiObject, Count, Buffer);
break;
case GDI_OBJECT_TYPE_BRUSH:
Result = BRUSH_GetObject((BRUSHOBJ *) GdiObject, Count, Buffer);
break;
#endif
case GDI_OBJECT_TYPE_BITMAP:
Result = BITMAP_GetObject((BITMAPOBJ *) GdiObject, Count, Buffer);
break;
case GDI_OBJECT_TYPE_FONT:
Result = FontGetObject((PTEXTOBJ) GdiObject, Count, Buffer);
#if 0
// Fix the LOGFONT structure for the stock fonts
if (FIRST_STOCK_HANDLE <= Handle && Handle <= LAST_STOCK_HANDLE)
{
FixStockFontSizeW(Handle, Count, Buffer);
}
#endif
break;
#if 0
case GDI_OBJECT_TYPE_PALETTE:
Result = PALETTE_GetObject((PALETTEOBJ *) GdiObject, Count, Buffer);
break;
#endif
default:
DPRINT1("GDI object type 0x%08x not implemented\n", ObjectType);
break;
}
GDIOBJ_UnlockObj(Handle, GDI_OBJECT_TYPE_DONTCARE);
return Result;
}
INT STDCALL
NtGdiGetObject(HANDLE handle, INT count, LPVOID buffer)
{
INT Ret;
LPVOID SafeBuf;
NTSTATUS Status;
if (count <= 0)
{
return 0;
}
SafeBuf = ExAllocatePoolWithTag(PagedPool, count, TAG_GDIOBJ);
if(!SafeBuf)
{
SetLastWin32Error(ERROR_NOT_ENOUGH_MEMORY);
return 0;
}
Ret = IntGdiGetObject(handle, count, SafeBuf);
Status = MmCopyToCaller(buffer, SafeBuf, count);
ExFreePool(SafeBuf);
if(!NT_SUCCESS(Status))
{
SetLastNtError(Status);
return 0;
}
return Ret;
}
DWORD STDCALL
NtGdiGetObjectType(HANDLE handle)
{
GDIOBJHDR * ptr;
INT result = 0;
DWORD objectType;
ptr = GDIOBJ_LockObj(handle, GDI_OBJECT_TYPE_DONTCARE);
if (ptr == 0)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return 0;
}
objectType = GDIOBJ_GetObjectType(handle);
switch(objectType)
{
case GDI_OBJECT_TYPE_PEN:
result = OBJ_PEN;
break;
case GDI_OBJECT_TYPE_BRUSH:
result = OBJ_BRUSH;
break;
case GDI_OBJECT_TYPE_BITMAP:
result = OBJ_BITMAP;
break;
case GDI_OBJECT_TYPE_FONT:
result = OBJ_FONT;
break;
case GDI_OBJECT_TYPE_PALETTE:
result = OBJ_PAL;
break;
case GDI_OBJECT_TYPE_REGION:
result = OBJ_REGION;
break;
case GDI_OBJECT_TYPE_DC:
result = OBJ_DC;
break;
case GDI_OBJECT_TYPE_METADC:
result = OBJ_METADC;
break;
case GDI_OBJECT_TYPE_METAFILE:
result = OBJ_METAFILE;
break;
case GDI_OBJECT_TYPE_ENHMETAFILE:
result = OBJ_ENHMETAFILE;
break;
case GDI_OBJECT_TYPE_ENHMETADC:
result = OBJ_ENHMETADC;
break;
case GDI_OBJECT_TYPE_EXTPEN:
result = OBJ_EXTPEN;
break;
case GDI_OBJECT_TYPE_MEMDC:
result = OBJ_MEMDC;
break;
default:
DPRINT1("Magic 0x%08x not implemented\n", objectType);
break;
}
GDIOBJ_UnlockObj(handle, GDI_OBJECT_TYPE_DONTCARE);
return result;
}
DC_GET_VAL( INT, NtGdiGetRelAbs, w.relAbsMode )
DC_GET_VAL( INT, NtGdiGetROP2, w.ROPmode )
DC_GET_VAL( INT, NtGdiGetStretchBltMode, w.stretchBltMode )
DC_GET_VAL( UINT, NtGdiGetTextAlign, w.textAlign )
DC_GET_VAL( COLORREF, NtGdiGetTextColor, w.textColor )
DC_GET_VAL_EX( GetViewportExtEx, vportExtX, vportExtY, SIZE, cx, cy )
DC_GET_VAL_EX( GetViewportOrgEx, vportOrgX, vportOrgY, POINT, x, y )
DC_GET_VAL_EX( GetWindowExtEx, wndExtX, wndExtY, SIZE, cx, cy )
DC_GET_VAL_EX( GetWindowOrgEx, wndOrgX, wndOrgY, POINT, x, y )
HDC STDCALL
NtGdiResetDC(HDC hDC, CONST DEVMODEW *InitData)
{
UNIMPLEMENTED;
return 0;
}
BOOL STDCALL
NtGdiRestoreDC(HDC hDC, INT SaveLevel)
{
PDC dc, dcs;
BOOL success;
DPRINT("NtGdiRestoreDC(%lx, %d)\n", hDC, SaveLevel);
dc = DC_LockDc(hDC);
if (!dc)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if (SaveLevel == -1)
SaveLevel = dc->saveLevel;
if ((SaveLevel < 1) || (SaveLevel > dc->saveLevel))
{
DC_UnlockDc(hDC);
return FALSE;
}
success = TRUE;
while (dc->saveLevel >= SaveLevel)
{
HDC hdcs = DC_GetNextDC (dc);
dcs = DC_LockDc (hdcs);
if (dcs == NULL)
{
DC_UnlockDc(hDC);
return FALSE;
}
DC_SetNextDC (dcs, DC_GetNextDC (dcs));
if (--dc->saveLevel < SaveLevel)
{
DC_UnlockDc( hDC );
DC_UnlockDc( hdcs );
NtGdiSetDCState(hDC, hdcs);
#if 0
if (!PATH_AssignGdiPath( &dc->w.path, &dcs->w.path ))
{
/* FIXME: This might not be quite right, since we're
* returning FALSE but still destroying the saved DC state */
success = FALSE;
}
#endif
dc = DC_LockDc(hDC);
if(!dc)
{
return FALSE;
}
}
else
{
DC_UnlockDc( hdcs );
}
NtGdiDeleteDC (hdcs);
}
DC_UnlockDc( hDC );
return success;
}
INT STDCALL
NtGdiSaveDC(HDC hDC)
{
HDC hdcs;
PDC dc, dcs;
INT ret;
DPRINT("NtGdiSaveDC(%lx)\n", hDC);
if (!(hdcs = NtGdiGetDCState(hDC)))
{
return 0;
}
dcs = DC_LockDc (hdcs);
if (dcs == NULL)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return 0;
}
dc = DC_LockDc (hDC);
if (dc == NULL)
{
DC_UnlockDc(dc);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return 0;
}
#if 0
/* Copy path. The reason why path saving / restoring is in SaveDC/
* RestoreDC and not in GetDCState/SetDCState is that the ...DCState
* functions are only in Win16 (which doesn't have paths) and that
* SetDCState doesn't allow us to signal an error (which can happen
* when copying paths).
*/
if (!PATH_AssignGdiPath (&dcs->w.path, &dc->w.path))
{
NtGdiDeleteDC (hdcs);
return 0;
}
#endif
DC_SetNextDC (dcs, DC_GetNextDC (dc));
DC_SetNextDC (dc, hdcs);
ret = ++dc->saveLevel;
DC_UnlockDc( hdcs );
DC_UnlockDc( hDC );
return ret;
}
HGDIOBJ
STDCALL
NtGdiSelectObject(HDC hDC, HGDIOBJ hGDIObj)
{
HGDIOBJ objOrg = NULL; // default to failure
BITMAPOBJ *pb;
PDC dc;
PGDIBRUSHOBJ pen;
PGDIBRUSHOBJ brush;
XLATEOBJ *XlateObj;
DWORD objectType;
ULONG NumColors = 0;
HRGN hVisRgn;
BOOLEAN Failed;
if(!hDC || !hGDIObj) return NULL;
dc = DC_LockDc(hDC);
if (NULL == dc)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return NULL;
}
objectType = GDIOBJ_GetObjectType(hGDIObj);
switch (objectType)
{
case GDI_OBJECT_TYPE_PEN:
pen = PENOBJ_LockPen((HPEN) hGDIObj);
if (pen == NULL)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
break;
}
XlateObj = IntGdiCreateBrushXlate(dc, pen, &Failed);
PENOBJ_UnlockPen((HPEN) hGDIObj);
if (Failed)
{
SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES);
break;
}
objOrg = (HGDIOBJ)dc->w.hPen;
dc->w.hPen = hGDIObj;
if (dc->XlatePen != NULL)
EngDeleteXlate(dc->XlatePen);
dc->XlatePen = XlateObj;
break;
case GDI_OBJECT_TYPE_BRUSH:
brush = BRUSHOBJ_LockBrush((HPEN) hGDIObj);
if (brush == NULL)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
break;
}
XlateObj = IntGdiCreateBrushXlate(dc, brush, &Failed);
BRUSHOBJ_UnlockBrush((HPEN) hGDIObj);
if (Failed)
{
SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES);
break;
}
objOrg = (HGDIOBJ)dc->w.hBrush;
dc->w.hBrush = hGDIObj;
if (dc->XlateBrush != NULL)
EngDeleteXlate(dc->XlateBrush);
dc->XlateBrush = XlateObj;
break;
case GDI_OBJECT_TYPE_FONT:
objOrg = (HGDIOBJ)dc->w.hFont;
dc->w.hFont = (HFONT) hGDIObj;
TextIntRealizeFont(dc->w.hFont);
break;
case GDI_OBJECT_TYPE_BITMAP:
// must be memory dc to select bitmap
if (!(dc->w.flags & DC_MEMORY))
{
DC_UnlockDc(hDC);
return NULL;
}
pb = BITMAPOBJ_LockBitmap(hGDIObj);
if (NULL == pb)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
DC_UnlockDc(hDC);
return NULL;
}
objOrg = (HGDIOBJ)dc->w.hBitmap;
/* Release the old bitmap, lock the new one and convert it to a SURF */
dc->w.hBitmap = hGDIObj;
// if we're working with a DIB, get the palette [fixme: only create if the selected palette is null]
if(pb->dib)
{
dc->w.bitsPerPixel = pb->dib->dsBmih.biBitCount;
if(pb->dib->dsBmih.biBitCount <= 8)
{
if(pb->dib->dsBmih.biBitCount == 1) { NumColors = 2; } else
if(pb->dib->dsBmih.biBitCount == 4) { NumColors = 16; } else
if(pb->dib->dsBmih.biBitCount == 8) { NumColors = 256; }
dc->w.hPalette = PALETTE_AllocPaletteIndexedRGB(NumColors, pb->ColorMap);
}
else
{
dc->w.hPalette = PALETTE_AllocPalette(PAL_BITFIELDS, 0, NULL,
pb->dib->dsBitfields[0],
pb->dib->dsBitfields[1],
pb->dib->dsBitfields[2]);
}
}
else
{
dc->w.bitsPerPixel = BitsPerFormat(pb->SurfObj.iBitmapFormat);
dc->w.hPalette = dc->DevInfo->hpalDefault;
}
/* Reselect brush and pen to regenerate the XLATEOBJs. */
NtGdiSelectObject ( hDC, dc->w.hBrush );
NtGdiSelectObject ( hDC, dc->w.hPen );
DC_UnlockDc ( hDC );
hVisRgn = NtGdiCreateRectRgn ( 0, 0, pb->SurfObj.sizlBitmap.cx, pb->SurfObj.sizlBitmap.cy );
NtGdiSelectVisRgn ( hDC, hVisRgn );
NtGdiDeleteObject ( hVisRgn );
BITMAPOBJ_UnlockBitmap(hGDIObj);
return objOrg;
case GDI_OBJECT_TYPE_REGION:
DC_UnlockDc (hDC);
/*
* The return value is one of the following values:
* SIMPLEREGION
* COMPLEXREGION
* NULLREGION
*/
return (HGDIOBJ) NtGdiSelectClipRgn(hDC, (HRGN) hGDIObj);
default:
break;
}
DC_UnlockDc( hDC );
return objOrg;
}
WORD STDCALL
NtGdiSetHookFlags(HDC hDC, WORD Flags)
{
WORD wRet;
DC *dc = DC_LockDc(hDC);
if (NULL == dc)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return 0;
}
wRet = dc->w.flags & DC_DIRTY;
/* "Undocumented Windows" info is slightly confusing.
*/
DPRINT("DC %p, Flags %04x\n", hDC, Flags);
if (Flags & DCHF_INVALIDATEVISRGN)
{
dc->w.flags |= DC_DIRTY;
}
else if (Flags & DCHF_VALIDATEVISRGN || 0 == Flags)
{
dc->w.flags &= ~DC_DIRTY;
}
DC_UnlockDc(hDC);
return wRet;
}
DC_SET_MODE( NtGdiSetBkMode, w.backgroundMode, TRANSPARENT, OPAQUE )
DC_SET_MODE( NtGdiSetPolyFillMode, w.polyFillMode, ALTERNATE, WINDING )
// DC_SET_MODE( NtGdiSetRelAbs, w.relAbsMode, ABSOLUTE, RELATIVE )
DC_SET_MODE( NtGdiSetROP2, w.ROPmode, R2_BLACK, R2_WHITE )
DC_SET_MODE( NtGdiSetStretchBltMode, w.stretchBltMode, BLACKONWHITE, HALFTONE )
// ---------------------------------------------------- Private Interface
HDC FASTCALL
DC_AllocDC(PUNICODE_STRING Driver)
{
PDC NewDC;
HDC hDC;
PWSTR Buf = NULL;
if (Driver != NULL)
{
Buf = ExAllocatePoolWithTag(PagedPool, Driver->MaximumLength, TAG_DC);
if(!Buf)
{
return NULL;
}
RtlCopyMemory(Buf, Driver->Buffer, Driver->MaximumLength);
}
hDC = (HDC) GDIOBJ_AllocObj(sizeof(DC), GDI_OBJECT_TYPE_DC, (GDICLEANUPPROC) DC_InternalDeleteDC);
if (hDC == NULL)
{
if(Buf)
{
ExFreePool(Buf);
}
return NULL;
}
NewDC = DC_LockDc(hDC);
if (Driver != NULL)
{
RtlCopyMemory(&NewDC->DriverName, Driver, sizeof(UNICODE_STRING));
NewDC->DriverName.Buffer = Buf;
}
NewDC->w.xformWorld2Wnd.eM11 = 1.0f;
NewDC->w.xformWorld2Wnd.eM12 = 0.0f;
NewDC->w.xformWorld2Wnd.eM21 = 0.0f;
NewDC->w.xformWorld2Wnd.eM22 = 1.0f;
NewDC->w.xformWorld2Wnd.eDx = 0.0f;
NewDC->w.xformWorld2Wnd.eDy = 0.0f;
NewDC->w.xformWorld2Vport = NewDC->w.xformWorld2Wnd;
NewDC->w.xformVport2World = NewDC->w.xformWorld2Wnd;
NewDC->w.vport2WorldValid = TRUE;
NewDC->w.MapMode = MM_TEXT;
NewDC->wndExtX = 1.0f;
NewDC->wndExtY = 1.0f;
NewDC->vportExtX = 1.0f;
NewDC->vportExtY = 1.0f;
NewDC->w.textColor = 0;
NewDC->w.backgroundColor = 0xffffff;
NewDC->w.hFont = NtGdiGetStockObject(SYSTEM_FONT);
TextIntRealizeFont(NewDC->w.hFont);
NewDC->w.hPalette = NtGdiGetStockObject(DEFAULT_PALETTE);
DC_UnlockDc(hDC);
return hDC;
}
HDC FASTCALL
DC_FindOpenDC(PUNICODE_STRING Driver)
{
return NULL;
}
/*!
* Initialize some common fields in the Device Context structure.
*/
VOID FASTCALL
DC_InitDC(HDC DCHandle)
{
// NtGdiRealizeDefaultPalette(DCHandle);
NtGdiSelectObject(DCHandle, NtGdiGetStockObject( WHITE_BRUSH ));
NtGdiSelectObject(DCHandle, NtGdiGetStockObject( BLACK_PEN ));
//NtGdiSelectObject(DCHandle, hFont);
// CLIPPING_UpdateGCRegion(DCToInit);
}
VOID FASTCALL
DC_FreeDC(HDC DCToFree)
{
if (!GDIOBJ_FreeObj(DCToFree, GDI_OBJECT_TYPE_DC, GDIOBJFLAG_DEFAULT))
{
DPRINT("DC_FreeDC failed\n");
}
}
BOOL FASTCALL
DC_InternalDeleteDC( PDC DCToDelete )
{
RtlFreeUnicodeString(&DCToDelete->DriverName);
return TRUE;
}
HDC FASTCALL
DC_GetNextDC (PDC pDC)
{
return pDC->hNext;
}
VOID FASTCALL
DC_SetNextDC (PDC pDC, HDC hNextDC)
{
pDC->hNext = hNextDC;
}
VOID FASTCALL
DC_UpdateXforms(PDC dc)
{
XFORM xformWnd2Vport;
FLOAT scaleX, scaleY;
/* Construct a transformation to do the window-to-viewport conversion */
scaleX = (dc->wndExtX ? (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX : 0.0f);
scaleY = (dc->wndExtY ? (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY : 0.0f);
xformWnd2Vport.eM11 = scaleX;
xformWnd2Vport.eM12 = 0.0;
xformWnd2Vport.eM21 = 0.0;
xformWnd2Vport.eM22 = scaleY;
xformWnd2Vport.eDx = (FLOAT)dc->vportOrgX - scaleX * (FLOAT)dc->wndOrgX;
xformWnd2Vport.eDy = (FLOAT)dc->vportOrgY - scaleY * (FLOAT)dc->wndOrgY;
/* Combine with the world transformation */
IntGdiCombineTransform(&dc->w.xformWorld2Vport, &dc->w.xformWorld2Wnd, &xformWnd2Vport);
/* Create inverse of world-to-viewport transformation */
dc->w.vport2WorldValid = DC_InvertXform(&dc->w.xformWorld2Vport, &dc->w.xformVport2World);
}
BOOL FASTCALL
DC_InvertXform(const XFORM *xformSrc,
XFORM *xformDest)
{
FLOAT determinant;
determinant = xformSrc->eM11*xformSrc->eM22 - xformSrc->eM12*xformSrc->eM21;
if (determinant > -1e-12 && determinant < 1e-12)
{
return FALSE;
}
xformDest->eM11 = xformSrc->eM22 / determinant;
xformDest->eM12 = -xformSrc->eM12 / determinant;
xformDest->eM21 = -xformSrc->eM21 / determinant;
xformDest->eM22 = xformSrc->eM11 / determinant;
xformDest->eDx = -xformSrc->eDx * xformDest->eM11 - xformSrc->eDy * xformDest->eM21;
xformDest->eDy = -xformSrc->eDx * xformDest->eM12 - xformSrc->eDy * xformDest->eM22;
return TRUE;
}
VOID FASTCALL
DC_SetOwnership(HDC hDC, PEPROCESS Owner)
{
PDC DC;
GDIOBJ_SetOwnership(hDC, Owner);
DC = DC_LockDc(hDC);
if (NULL != DC)
{
if (NULL != DC->w.hClipRgn)
{
GDIOBJ_CopyOwnership(hDC, DC->w.hClipRgn);
}
if (NULL != DC->w.hVisRgn)
{
GDIOBJ_CopyOwnership(hDC, DC->w.hVisRgn);
}
if (NULL != DC->w.hGCClipRgn)
{
GDIOBJ_CopyOwnership(hDC, DC->w.hGCClipRgn);
}
DC_UnlockDc(hDC);
}
}
BOOL FASTCALL
IntIsPrimarySurface(SURFOBJ *SurfObj)
{
if (PrimarySurface.Handle == NULL)
{
return FALSE;
}
return SurfObj->hsurf == PrimarySurface.Handle;
}
/*
* Returns the color of the brush or pen that is currently selected into the DC.
* This function is called from GetDCBrushColor() and GetDCPenColor()
*/
COLORREF FASTCALL
IntGetDCColor(HDC hDC, ULONG Object)
{
/*
* The previous implementation was completly incorrect. It modified the
* brush that was currently selected into the device context, but in fact
* the DC pen/brush color should be stored directly in the device context
* (at address 0x2C of the user mode DC object memory on Windows 2K/XP).
* The actual color is then used when DC_BRUSH/DC_PEN object is selected
* into the device context and BRUSHOBJ for drawing is composed (belongs
* to IntGdiInitBrushInstance in the current ReactOS implementation). Also
* the implementation should be moved to user mode GDI32.dll when UM
* mapped GDI objects will be implemented.
*/
DPRINT("WIN32K:IntGetDCColor is unimplemented\n");
return 0xFFFFFF; /* The default DC color. */
}
/*
* Changes the color of the brush or pen that is currently selected into the DC.
* This function is called from SetDCBrushColor() and SetDCPenColor()
*/
COLORREF FASTCALL
IntSetDCColor(HDC hDC, ULONG Object, COLORREF Color)
{
/* See the comment in IntGetDCColor. */
DPRINT("WIN32K:IntSetDCColor is unimplemented\n");
return CLR_INVALID;
}
#define SIZEOF_DEVMODEW_300 188
#define SIZEOF_DEVMODEW_400 212
#define SIZEOF_DEVMODEW_500 220
/*! \brief Enumerate possible display settings for the given display...
*
* \todo Make thread safe!?
* \todo Don't ignore lpszDeviceName
* \todo Implement non-raw mode (only return settings valid for driver and monitor)
*/
BOOL FASTCALL
IntEnumDisplaySettings(
PUNICODE_STRING lpszDeviceName,
DWORD iModeNum,
LPDEVMODEW lpDevMode,
DWORD dwFlags)
{
static DEVMODEW *CachedDevModes = NULL, *CachedDevModesEnd = NULL;
static DWORD SizeOfCachedDevModes = 0;
LPDEVMODEW CachedMode = NULL;
DEVMODEW DevMode;
INT Size, OldSize;
ULONG DisplayNumber = 0; /* only default display supported */
if (lpDevMode->dmSize != SIZEOF_DEVMODEW_300 &&
lpDevMode->dmSize != SIZEOF_DEVMODEW_400 &&
lpDevMode->dmSize != SIZEOF_DEVMODEW_500)
{
SetLastWin32Error(STATUS_INVALID_PARAMETER);
return FALSE;
}
if (iModeNum == ENUM_CURRENT_SETTINGS)
{
CachedMode = &PrimarySurface.DMW;
assert(CachedMode->dmSize > 0);
}
else if (iModeNum == ENUM_REGISTRY_SETTINGS)
{
RtlZeroMemory(&DevMode, sizeof (DevMode));
DevMode.dmSize = sizeof (DevMode);
DevMode.dmDriverExtra = 0;
if (SetupDevMode(&DevMode, DisplayNumber))
CachedMode = &DevMode;
else
{
SetLastWin32Error(0); /* FIXME: use error code */
return FALSE;
}
/* FIXME: Maybe look for the matching devmode supplied by the
* driver so we can provide driver private/extra data?
*/
}
else
{
if (iModeNum == 0 || CachedDevModes == NULL) /* query modes from drivers */
{
UNICODE_STRING DriverFileNames;
LPWSTR CurrentName;
DRVENABLEDATA DrvEnableData;
/* Retrieve DDI driver names from registry */
RtlInitUnicodeString(&DriverFileNames, NULL);
if (!FindDriverFileNames(&DriverFileNames, DisplayNumber))
{
DPRINT1("FindDriverFileNames failed\n");
return FALSE;
}
/*
* DriverFileNames may be a list of drivers in REG_SZ_MULTI format,
* scan all of them until a good one found.
*/
CurrentName = DriverFileNames.Buffer;
for (;CurrentName < DriverFileNames.Buffer + (DriverFileNames.Length / sizeof (WCHAR));
CurrentName += wcslen(CurrentName) + 1)
{
INT i;
PGD_ENABLEDRIVER GDEnableDriver;
/* Get the DDI driver's entry point */
GDEnableDriver = DRIVER_FindDDIDriver(CurrentName);
if (NULL == GDEnableDriver)
{
DPRINT("FindDDIDriver failed for %S\n", CurrentName);
continue;
}
/* Call DDI driver's EnableDriver function */
RtlZeroMemory(&DrvEnableData, sizeof (DrvEnableData));
if (!GDEnableDriver(DDI_DRIVER_VERSION_NT5_01, sizeof (DrvEnableData), &DrvEnableData))
{
DPRINT("DrvEnableDriver failed for %S\n", CurrentName);
continue;
}
CachedDevModesEnd = CachedDevModes;
/* find DrvGetModes function */
for (i = 0; i < DrvEnableData.c; i++)
{
PDRVFN DrvFn = DrvEnableData.pdrvfn + i;
PGD_GETMODES GetModes;
INT SizeNeeded, SizeUsed;
if (DrvFn->iFunc != INDEX_DrvGetModes)
continue;
GetModes = (PGD_GETMODES)DrvFn->pfn;
/* make sure we have enough memory to hold the modes */
SizeNeeded = GetModes((HANDLE)(PrimarySurface.VideoFileObject->DeviceObject), 0, NULL);
if (SizeNeeded <= 0)
{
DPRINT("DrvGetModes failed for %S\n", CurrentName);
break;
}
SizeUsed = CachedDevModesEnd - CachedDevModes;
if (SizeOfCachedDevModes - SizeUsed < SizeNeeded)
{
PVOID NewBuffer;
SizeOfCachedDevModes += SizeNeeded;
NewBuffer = ExAllocatePool(PagedPool, SizeOfCachedDevModes);
if (NewBuffer == NULL)
{
/* clean up */
ExFreePool(CachedDevModes);
SizeOfCachedDevModes = 0;
CachedDevModes = NULL;
CachedDevModesEnd = NULL;
SetLastWin32Error(STATUS_NO_MEMORY);
return FALSE;
}
if (CachedDevModes != NULL)
{
RtlCopyMemory(NewBuffer, CachedDevModes, SizeUsed);
ExFreePool(CachedDevModes);
}
CachedDevModes = NewBuffer;
CachedDevModesEnd = (DEVMODEW *)((PCHAR)NewBuffer + SizeUsed);
}
/* query modes */
SizeNeeded = GetModes((HANDLE)(PrimarySurface.VideoFileObject->DeviceObject),
SizeOfCachedDevModes - SizeUsed,
CachedDevModesEnd);
if (SizeNeeded <= 0)
{
DPRINT("DrvGetModes failed for %S\n", CurrentName);
}
else
{
CachedDevModesEnd = (DEVMODEW *)((PCHAR)CachedDevModesEnd + SizeNeeded);
}
break;
}
}
RtlFreeUnicodeString(&DriverFileNames);
}
/* return cached info */
CachedMode = CachedDevModes;
if (CachedMode >= CachedDevModesEnd)
{
SetLastWin32Error(STATUS_NO_MORE_ENTRIES);
return FALSE;
}
while (iModeNum-- > 0 && CachedMode < CachedDevModesEnd)
{
assert(CachedMode->dmSize > 0);
CachedMode = (DEVMODEW *)((PCHAR)CachedMode + CachedMode->dmSize + CachedMode->dmDriverExtra);
}
if (CachedMode >= CachedDevModesEnd)
{
SetLastWin32Error(STATUS_NO_MORE_ENTRIES);
return FALSE;
}
}
assert(CachedMode != NULL);
Size = OldSize = lpDevMode->dmSize;
if (Size > CachedMode->dmSize)
Size = CachedMode->dmSize;
RtlCopyMemory(lpDevMode, CachedMode, Size);
RtlZeroMemory((PCHAR)lpDevMode + Size, OldSize - Size);
lpDevMode->dmSize = OldSize;
Size = OldSize = lpDevMode->dmDriverExtra;
if (Size > CachedMode->dmDriverExtra)
Size = CachedMode->dmDriverExtra;
RtlCopyMemory((PCHAR)lpDevMode + lpDevMode->dmSize,
(PCHAR)CachedMode + CachedMode->dmSize, Size);
RtlZeroMemory((PCHAR)lpDevMode + lpDevMode->dmSize + Size, OldSize - Size);
lpDevMode->dmDriverExtra = OldSize;
return TRUE;
}
/* EOF */
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