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[WINSPOOL] Implement DocumentPropertiesA including DEVMODE conversions (#2339)

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Co-authored-by: Doug Lyons <douglyons@douglyons.com>
Co-authored-by: Colin Finck <colin@reactos.org>
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Doug Lyons 2020-02-25 01:02:46 -06:00 • committed by GitHub
parent 1e60116563
commit 3077c0e43e
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3 changed files with 162 additions and 2 deletions
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79
win32ss/printing/base/winspool/devmode.c
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@ -233,3 +233,82 @@ Failure:
SetLastError(ERROR_INVALID_DATA);
return FALSE;
}
void RosConvertAnsiDevModeToUnicodeDevmode(PDEVMODEA pDevModeInput, PDEVMODEW pDevModeOutput)
{
// FIXME: This function should become ConvertAnsiDevModeToUnicodeDevmode when its parameters are known!
// Check if a pDevModeInput and pDevModeOutput are both not NULL.
if (!pDevModeInput || !pDevModeOutput)
return;
pDevModeOutput = GdiConvertToDevmodeW(pDevModeInput);
}
// Internal counterpart to GdiConvertToDevmodeW from gdi32
static __inline DEVMODEA*
_ConvertToDevmodeA(const DEVMODEW *dmW)
{
DEVMODEA *dmA;
WORD dmA_size, dmW_size;
size_t BytesToCopy;
dmW_size = dmW->dmSize;
/* this is the minimal dmSize that XP accepts */
if (dmW_size < FIELD_OFFSET(DEVMODEW, dmFields))
return NULL;
// Guard against callers that set dmSize incorrectly.
if (dmW_size > sizeof(DEVMODEW))
dmW_size = sizeof(DEVMODEW);
// dmA_size must become dmW_size without the additional 1 byte per character for each Unicode string (dmDeviceName and dmFormName).
dmA_size = dmW_size - CCHDEVICENAME;
if (dmW_size >= FIELD_OFFSET(DEVMODEW, dmFormName) + CCHFORMNAME * sizeof(WCHAR))
dmA_size -= CCHFORMNAME;
// Allocate the required bytes, that is dmSize for the ANSI DEVMODEA structure plus any extra bytes requested through dmDriverExtra.
dmA = HeapAlloc(GetProcessHeap(), 0, dmA_size + dmW->dmDriverExtra);
if (!dmA) return NULL;
// Every valid DEVMODEW has a dmDeviceName, which we convert to ANSI here.
WideCharToMultiByte(CP_ACP, 0, dmW->dmDeviceName, -1, (LPSTR)dmA->dmDeviceName, CCHDEVICENAME, NULL, NULL);
// Copy everything up to dmFormName or the remaining dmW_size, whatever is smaller.
BytesToCopy = min(FIELD_OFFSET(DEVMODEW, dmFormName) - FIELD_OFFSET(DEVMODEW, dmSpecVersion), dmW_size - CCHDEVICENAME * sizeof(WCHAR));
memcpy(&dmA->dmSpecVersion, &dmW->dmSpecVersion, BytesToCopy);
// Handle dmFormName if the input DEVMODEW is large enough to contain one.
if (dmW_size >= FIELD_OFFSET(DEVMODEW, dmFormName) + CCHFORMNAME * sizeof(WCHAR))
{
if (dmW->dmFields & DM_FORMNAME)
WideCharToMultiByte(CP_ACP, 0, dmW->dmFormName, -1, (LPSTR)dmA->dmFormName, CCHFORMNAME, NULL, NULL);
else
dmA->dmFormName[0] = 0;
// Copy the remaining fields.
if (dmW_size > FIELD_OFFSET(DEVMODEW, dmLogPixels))
memcpy(&dmA->dmLogPixels, &dmW->dmLogPixels, dmW_size - FIELD_OFFSET(DEVMODEW, dmLogPixels));
}
// Append dmDriverExtra if required.
if (dmW->dmDriverExtra)
memcpy((char *)dmA + dmA_size, (const char *)dmW + dmW_size, dmW->dmDriverExtra);
// Set the corrected dmSize and we are done.
dmA->dmSize = dmA_size;
return dmA;
}
void RosConvertUnicodeDevModeToAnsiDevmode(PDEVMODEW pDevModeInput, PDEVMODEA pDevModeOutput)
{
// FIXME: This function should become ConvertUnicodeDevModeToAnsiDevmode when its parameters are known!
// Check if a pDevModeInput and pDevModeOutput are both not NULL.
if (!pDevModeInput || !pDevModeOutput)
return;
pDevModeOutput = _ConvertToDevmodeA(pDevModeInput);
}