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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright 1998 - 2003 Microsoft Corporation. All Rights Reserved.
//
// FILE: Devmode.cpp
//
// PURPOSE: Implementation of Devmode functions shared with OEM UI and OEM rendering modules.
//
// This file is wrapped in fdevmode.cpp in other parts of the watermark sample.
// The appropriate precompiled header should be included there.
// #include "precomp.h
#include "debug.h"
#include "devmode.h"
HRESULT hrOEMDevMode(DWORD dwMode, POEMDMPARAM pOemDMParam)
{
HRESULT hResult = S_OK;
POEMDEV pOEMDevIn = NULL;
POEMDEV pOEMDevOut = NULL;
// Verify parameters.
if( (NULL == pOemDMParam)
||
( (OEMDM_SIZE != dwMode)
&&
(OEMDM_DEFAULT != dwMode)
&&
(OEMDM_CONVERT != dwMode)
&&
(OEMDM_MERGE != dwMode)
)
)
{
ERR(DLLTEXT("DevMode() ERROR_INVALID_PARAMETER.\r\n"));
SetLastError(ERROR_INVALID_PARAMETER);
return E_FAIL;
}
// Cast generic (i.e. PVOID) to OEM private devomode pointer type.
pOEMDevIn = (POEMDEV) pOemDMParam->pOEMDMIn;
pOEMDevOut = (POEMDEV) pOemDMParam->pOEMDMOut;
switch(dwMode)
{
case OEMDM_SIZE:
pOemDMParam->cbBufSize = sizeof(OEMDEV);
break;
case OEMDM_DEFAULT:
pOEMDevOut->dmOEMExtra.dwSize = sizeof(OEMDEV);
pOEMDevOut->dmOEMExtra.dwSignature = OEM_SIGNATURE;
pOEMDevOut->dmOEMExtra.dwVersion = OEM_VERSION;
pOEMDevOut->bEnabled = WATER_MARK_DEFAULT_ENABLED;
pOEMDevOut->dfRotate = WATER_MARK_DEFAULT_ROTATION;
pOEMDevOut->dwFontSize = WATER_MARK_DEFAULT_FONTSIZE;
pOEMDevOut->crTextColor = WATER_MARK_DEFAULT_COLOR;
hResult = StringCbCopyW(pOEMDevOut->szWaterMark, sizeof(pOEMDevOut->szWaterMark), WATER_MARK_DEFAULT_TEXT);
break;
case OEMDM_CONVERT:
ConvertOEMDevmode(pOEMDevIn, pOEMDevOut);
break;
case OEMDM_MERGE:
ConvertOEMDevmode(pOEMDevIn, pOEMDevOut);
MakeOEMDevmodeValid(pOEMDevOut);
break;
}
return hResult;
}
BOOL ConvertOEMDevmode(PCOEMDEV pOEMDevIn, POEMDEV pOEMDevOut)
{
HRESULT hCopy = S_OK;
if( (NULL == pOEMDevIn)
||
(NULL == pOEMDevOut)
)
{
ERR(DLLTEXT("ConvertOEMDevmode() invalid parameters.\r\n"));
return FALSE;
}
// Check OEM Signature, if it doesn't match ours,
// then just assume DMIn is bad and use defaults.
if(pOEMDevIn->dmOEMExtra.dwSignature == pOEMDevOut->dmOEMExtra.dwSignature)
{
VERBOSE(DLLTEXT("Converting private OEM Devmode.\r\n"));
// Set the devmode defaults so that anything the isn't copied over will
// be set to the default value.
pOEMDevOut->bEnabled = WATER_MARK_DEFAULT_ENABLED;
pOEMDevOut->dfRotate = WATER_MARK_DEFAULT_ROTATION;
pOEMDevOut->dwFontSize = WATER_MARK_DEFAULT_FONTSIZE;
pOEMDevOut->crTextColor = WATER_MARK_DEFAULT_COLOR;
hCopy = StringCbCopyW(pOEMDevOut->szWaterMark, sizeof(pOEMDevOut->szWaterMark), WATER_MARK_DEFAULT_TEXT);
// Copy the old structure in to the new using which ever size is the smaller.
// Devmode maybe from newer Devmode (not likely since there is only one), or
// Devmode maybe a newer Devmode, in which case it maybe larger,
// but the first part of the structure should be the same.
// DESIGN ASSUMPTION: the private DEVMODE structure only gets added to;
// the fields that are in the DEVMODE never change only new fields get added to the end.
memcpy(pOEMDevOut, pOEMDevIn, __min(pOEMDevOut->dmOEMExtra.dwSize, pOEMDevIn->dmOEMExtra.dwSize));
// Re-fill in the size and version fields to indicated
// that the DEVMODE is the current private DEVMODE version.
pOEMDevOut->dmOEMExtra.dwSize = sizeof(OEMDEV);
pOEMDevOut->dmOEMExtra.dwVersion = OEM_VERSION;
}
else
{
WARNING(DLLTEXT("Unknown DEVMODE signature, pOEMDMIn ignored.\r\n"));
// Don't know what the input DEVMODE is, so just use defaults.
pOEMDevOut->dmOEMExtra.dwSize = sizeof(OEMDEV);
pOEMDevOut->dmOEMExtra.dwSignature = OEM_SIGNATURE;
pOEMDevOut->dmOEMExtra.dwVersion = OEM_VERSION;
pOEMDevOut->bEnabled = WATER_MARK_DEFAULT_ENABLED;
pOEMDevOut->dfRotate = WATER_MARK_DEFAULT_ROTATION;
pOEMDevOut->dwFontSize = WATER_MARK_DEFAULT_FONTSIZE;
pOEMDevOut->crTextColor = WATER_MARK_DEFAULT_COLOR;
hCopy = StringCbCopyW(pOEMDevOut->szWaterMark, sizeof(pOEMDevOut->szWaterMark), WATER_MARK_DEFAULT_TEXT);
}
return SUCCEEDED(hCopy);
}
BOOL MakeOEMDevmodeValid(POEMDEV pOEMDevmode)
{
if(NULL == pOEMDevmode)
{
return FALSE;
}
// ASSUMPTION: pOEMDevmode is large enough to contain OEMDEV structure.
// Make sure that dmOEMExtra indicates the current OEMDEV structure.
pOEMDevmode->dmOEMExtra.dwSize = sizeof(OEMDEV);
pOEMDevmode->dmOEMExtra.dwSignature = OEM_SIGNATURE;
pOEMDevmode->dmOEMExtra.dwVersion = OEM_VERSION;
// bEnable should be either TRUE or FALSE.
if( (TRUE != pOEMDevmode->bEnabled)
&&
(FALSE != pOEMDevmode->bEnabled)
)
{
pOEMDevmode->bEnabled = WATER_MARK_DEFAULT_ENABLED;
}
// dfRotate should be between 0 and 360 inclusive.
if( (0 > pOEMDevmode->dfRotate)
||
(360 < pOEMDevmode->dfRotate)
)
{
pOEMDevmode->dfRotate = WATER_MARK_DEFAULT_ROTATION;
}
// dwFontSize should be 8, 9, 10, 11, 12, 14, 16, 18, 20, 22, 24, 26, 28, 36, 48, or 72.
if(!IsValidFontSize(pOEMDevmode->dwFontSize))
{
pOEMDevmode->dwFontSize = WATER_MARK_DEFAULT_FONTSIZE;
}
// The high byte of the hi word should be zero.
if(0 != HIBYTE(HIWORD(pOEMDevmode->crTextColor)))
{
pOEMDevmode->crTextColor = WATER_MARK_DEFAULT_COLOR;
}
// Make sure that water mark string is terminated.
pOEMDevmode->szWaterMark[WATER_MARK_TEXT_SIZE - 1] = L'\0';
return TRUE;
}
BOOL IsValidFontSize(DWORD dwFontSize)
{
BOOL bValid = FALSE;
switch(dwFontSize)
{
case 8:
case 9:
case 10:
case 11:
case 12:
case 14:
case 16:
case 18:
case 20:
case 22:
case 24:
case 26:
case 28:
case 36:
case 48:
case 72:
bValid = TRUE;
break;
default:
ERR(DLLTEXT("IsValidFontSize() found invalid font size\r\n"));
break;
}
return bValid;
}
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