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128 lines
3.9 KiB
128 lines
3.9 KiB
/*******************************************************************************
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*
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* (C) COPYRIGHT MICROSOFT CORPORATION, 2000
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*
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* TITLE: DEVPROP.H
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*
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* VERSION: 1.0
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*
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* AUTHOR: ShaunIv
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*
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* DATE: 8/31/2000
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*
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* DESCRIPTION: Identify a scanner's characteristics
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*
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*******************************************************************************/
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#include <wia.h>
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#include <uicommon.h>
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namespace ScannerProperties
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{
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enum
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{
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HasFlatBed = 0x00000001,
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HasDocumentFeeder = 0x00000002,
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SupportsPreview = 0x00000008,
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SupportsPageSize = 0x00000010,
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};
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LONG GetDeviceProps( IWiaItem *pWiaRootItem )
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{
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WIA_PUSHFUNCTION(TEXT("ScannerProperties::GetDeviceProps()"));
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LONG lResult = 0;
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//
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// If the scanner has document handling and supports FEEDER, it has an ADF.
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//
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LONG nDocumentHandlingSelect = 0;
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if (PropStorageHelpers::GetPropertyFlags( pWiaRootItem, WIA_DPS_DOCUMENT_HANDLING_SELECT, nDocumentHandlingSelect) && (nDocumentHandlingSelect & FEEDER))
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{
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//
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// If the device has a feeder with no maximum length, it is a sheet feeder.
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//
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LONG nVerticalFeederSize = 0;
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if (PropStorageHelpers::GetProperty( pWiaRootItem, WIA_DPS_VERTICAL_SHEET_FEED_SIZE, nVerticalFeederSize ) && (nVerticalFeederSize != 0))
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{
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lResult |= HasDocumentFeeder;
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lResult |= SupportsPageSize;
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}
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else
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{
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lResult |= HasDocumentFeeder;
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}
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}
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//
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// If the scanner has a vertical bed size, it has a flatbed
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//
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LONG nVerticalBedSize = 0;
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if (PropStorageHelpers::GetProperty( pWiaRootItem, WIA_DPS_VERTICAL_BED_SIZE, nVerticalBedSize ) && (nVerticalBedSize != 0))
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{
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lResult |= HasFlatBed;
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lResult |= SupportsPreview;
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}
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//
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// If the driver specifically tells us it doesn't support previewing, turn it off
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//
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LONG nShowPreview = 0;
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if (PropStorageHelpers::GetProperty( pWiaRootItem, WIA_DPS_SHOW_PREVIEW_CONTROL, nShowPreview ) && (WIA_DONT_SHOW_PREVIEW_CONTROL == nShowPreview))
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{
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lResult &= ~SupportsPreview;
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}
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//
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// debug print an English string describing the properties
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//
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#if defined(DBG)
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#define ENTRY(x) { x, #x }
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static struct
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{
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LONG nFlag;
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CHAR *strName;
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} dbgFlags[] =
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{
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ENTRY(HasFlatBed),
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ENTRY(HasDocumentFeeder),
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ENTRY(SupportsPreview),
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ENTRY(SupportsPageSize)
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};
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CSimpleStringAnsi strProps;
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for (int i=0;i<ARRAYSIZE(dbgFlags);i++)
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{
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if (lResult & dbgFlags[i].nFlag)
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{
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if (strProps.Length())
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{
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strProps.Concat("|");
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}
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strProps.Concat(dbgFlags[i].strName);
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}
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}
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WIA_TRACE((TEXT("Device Properties: %hs"), strProps.String() ));
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#endif
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return lResult;
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}
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inline IsAScrollFedScanner( IWiaItem *pWiaRootItem )
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{
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LONG nDeviceProps = GetDeviceProps(pWiaRootItem);
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return ((nDeviceProps & HasDocumentFeeder) && !(nDeviceProps & SupportsPageSize));
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}
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inline IsAFlatbedScanner( IWiaItem *pWiaRootItem )
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{
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LONG nDeviceProps = GetDeviceProps(pWiaRootItem);
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return ((nDeviceProps & HasFlatBed) && (nDeviceProps & SupportsPreview));
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}
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inline IsAnADFAndFlatbed( IWiaItem *pWiaRootItem )
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{
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LONG nDeviceProps = GetDeviceProps(pWiaRootItem);
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return ((nDeviceProps & HasFlatBed) && (nDeviceProps & HasDocumentFeeder));
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}
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}
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