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windows-nt/Source/XPSP1/NT/printscan/fax/print/faxprint/faxui/devcaps.c

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2020-09-26 03:20:57 -05:00
/*++
Copyright (c) 1996 Microsoft Corporation
Module Name:
devcaps.c
Abstract:
Implementation of DrvDeviceCapabilities
Environment:
Fax driver user interface
Revision History:
01/09/96 -davidx-
Created it.
mm/dd/yy -author-
description
--*/
#include "faxui.h"
#include "forms.h"
//
// Forward declaration for local functions
//
DWORD
CalcMinMaxExtent(
PPOINT pOutput,
FORM_INFO_1 *pFormsDB,
DWORD cForms,
INT wCapability
);
DWORD
EnumResolutions(
PLONG pResolutions
);
DWORD
DrvDeviceCapabilities(
HANDLE hPrinter,
LPTSTR pDeviceName,
WORD wCapability,
PVOID pOutput,
PDEVMODE pdm
)
/*++
Routine Description:
Provides information about the specified device and its capabilities
Arguments:
hPrinter - Identifies a printer object
pDeviceName - Points to a null-terminated device name string
wCapability - Specifies the interested device capability
pOutput - Points to the output buffer
pdm - Points to the source devmode structure
Return Value:
The return value depends on wCapability.
Note:
Please refer for DDK documentation for more details.
--*/
{
FORM_INFO_1 *pFormsDB;
DWORD cForms;
PVOID pdmAlloced;
DWORD result = 0;
Verbose(("Entering DrvDeviceCapabilities: %d %x...\n", wCapability, pOutput));
//
// Validate input devmode and combine it with driver default
//
if (! (pdmAlloced = MemAlloc(sizeof(DRVDEVMODE)))) {
Error(("Memory allocation failed\n"));
return GDI_ERROR;
}
DriverDefaultDevmode(pdmAlloced, pDeviceName, hPrinter);
pdm = pdmAlloced;
result = 0;
//
// Return appropriate information depending upon wCapability
//
switch (wCapability) {
case DC_VERSION:
result = pdm->dmSpecVersion;
break;
case DC_DRIVER:
result = pdm->dmDriverVersion;
break;
case DC_SIZE:
result = pdm->dmSize;
break;
case DC_EXTRA:
result = pdm->dmDriverExtra;
break;
case DC_FIELDS:
result = pdm->dmFields;
break;
case DC_COPIES:
//
// Pretend that we can handle huge number of copies so that
// the apps won't try to do multi-copies themselves.
//
result = 1000;
break;
case DC_ORIENTATION:
//
// Landscape rotates counterclockwise
//
result = 90;
break;
case DC_PAPERNAMES:
case DC_PAPERS:
case DC_PAPERSIZE:
case DC_MINEXTENT:
case DC_MAXEXTENT:
//
// Get a list of forms in the forms database
//
pFormsDB = GetFormsDatabase(hPrinter, &cForms);
if (pFormsDB == NULL || cForms == 0) {
Error(("Cannot get system forms\n"));
return GDI_ERROR;
}
result = (wCapability == DC_MINEXTENT || wCapability == DC_MAXEXTENT) ?
CalcMinMaxExtent(pOutput, pFormsDB, cForms, wCapability) :
EnumPaperSizes(pOutput, pFormsDB, cForms, wCapability);
MemFree(pFormsDB);
break;
case DC_BINNAMES:
//
// Simulate a single input slot
//
if (pOutput)
LoadString(ghInstance, IDS_SLOT_ONLYONE, pOutput, CCHBINNAME);
result = 1;
break;
case DC_BINS:
if (pOutput)
*((PWORD) pOutput) = DMBIN_ONLYONE;
result = 1;
break;
case DC_ENUMRESOLUTIONS:
result = EnumResolutions(pOutput);
break;
default:
Error(("Unknown device capability: %d\n", wCapability));
result = GDI_ERROR;
break;
}
MemFree(pdmAlloced);
return result;
}
DWORD
EnumPaperSizes(
PVOID pOutput,
FORM_INFO_1 *pFormsDB,
DWORD cForms,
INT wCapability
)
/*++
Routine Description:
Retrieves a list of supported paper sizes
Arguments:
pOutput - Specifies a buffer for storing requested information
pFormsDB - Pointer to an array of forms from the forms database
cForms - Number of forms in the array
wCapability - Specifies what the caller is interested in
Return Value:
Number of paper sizes supported
--*/
{
DWORD index, count = 0;
LPTSTR pPaperNames = NULL;
PWORD pPapers = NULL;
PPOINT pPaperSizes = NULL;
//
// Figure out what the caller is interested in
//
switch (wCapability) {
case DC_PAPERNAMES:
pPaperNames = pOutput;
break;
case DC_PAPERSIZE:
pPaperSizes = pOutput;
break;
case DC_PAPERS:
pPapers = pOutput;
break;
default:
Assert(FALSE);
}
//
// Go through each form in the forms database
//
for (index=0; index < cForms; index++, pFormsDB++) {
//
// If the form is supported on the printer, then increment the count
// and collect requested information
//
if (! IsSupportedForm(pFormsDB))
continue;
count++;
//
// Return the size of the form in 0.1mm units.
// The unit used in FORM_INFO_1 is 0.001mm.
//
if (pPaperSizes) {
pPaperSizes->x = pFormsDB->Size.cx / 100;
pPaperSizes->y = pFormsDB->Size.cy / 100;
pPaperSizes++;
}
//
// Return the formname.
//
if (pPaperNames) {
CopyString(pPaperNames, pFormsDB->pName, CCHPAPERNAME);
pPaperNames += CCHPAPERNAME;
}
//
// Return one-based index of the form.
//
if (pPapers)
*pPapers++ = (WORD) index + DMPAPER_FIRST;
}
return count;
}
DWORD
CalcMinMaxExtent(
PPOINT pOutput,
FORM_INFO_1 *pFormsDB,
DWORD cForms,
INT wCapability
)
/*++
Routine Description:
Retrieves the minimum or maximum paper size extent
Arguments:
pOutput - Specifies a buffer for storing requested information
pFormsDB - Pointer to an array of forms from the forms database
cForms - Number of forms in the array
wCapability - What the caller is interested in: DC_MAXEXTENT or DC_MINEXTENT
Return Value:
Number of paper sizes supported
--*/
{
DWORD index, count = 0;
LONG minX, minY, maxX, maxY;
//
// Go through each form in the forms database
//
minX = minY = MAX_LONG;
maxX = maxY = 0;
for (index=0; index < cForms; index++, pFormsDB++) {
//
// If the form is supported on the printer, then increment the count
// and collect the requested information
//
if (! IsSupportedForm(pFormsDB))
continue;
count++;
if (pOutput == NULL)
continue;
if (minX > pFormsDB->Size.cx)
minX = pFormsDB->Size.cx;
if (minY > pFormsDB->Size.cy)
minY = pFormsDB->Size.cy;
if (maxX < pFormsDB->Size.cx)
maxX = pFormsDB->Size.cx;
if (maxY < pFormsDB->Size.cy)
maxY = pFormsDB->Size.cy;
}
//
// If an output buffer is provided, store the calculated
// minimum and maximum extent information.
//
if (pOutput != NULL) {
//
// NOTE: What unit does the caller expect?! The documentation
// doesn't mention anything about this. I assume this should
// be in the same unit as DEVMODE.dmPaperLength, which is 0.1mm.
//
if (wCapability == DC_MINEXTENT) {
pOutput->x = minX / 100;
pOutput->y = minY / 100;
} else {
pOutput->x = maxX / 100;
pOutput->y = maxY / 100;
}
}
return count;
}
DWORD
EnumResolutions(
PLONG pResolutions
)
/*++
Routine Description:
Retrieves a list of supported resolutions
Arguments:
pResolutions - Specifies a buffer for storing resolution information
Return Value:
Number of resolutions supported
Note:
Each resolution is represented by two LONGs representing
horizontal and vertical resolutions (in dpi) respectively.
--*/
{
if (pResolutions != NULL) {
//
// We support the following resolution settings:
// Normal = 200x200 dpi
// Draft = 200x100 dpi
//
*pResolutions++ = FAXRES_HORIZONTAL;
*pResolutions++ = FAXRES_VERTICAL;
*pResolutions++ = FAXRES_HORIZONTAL;
*pResolutions++ = FAXRES_VERTDRAFT;
}
return 2;
}
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