mozilla
/
gecko-dev
зеркало из https://github.com/mozilla/gecko-dev.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
gecko-dev/widget/os2/nsDeviceContextSpecOS2.cpp

694 строки
22 KiB
C++
Исходник Ответственный История

/* vim: set sw=2 sts=2 et cin: */
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <stdlib.h>
#include "nsDeviceContextSpecOS2.h"
#include "nsReadableUtils.h"
#include "nsTArray.h"
#include "prenv.h" /* for PR_GetEnv */
#include "prtime.h"
#include "nsIServiceManager.h"
#include "nsUnicharUtils.h"
#include "nsStringFwd.h"
#include "nsStringEnumerator.h"
#include "nsOS2Uni.h"
#include "nsIFile.h"
#include "nsDirectoryServiceDefs.h"
#include "nsIFileStreams.h"
#include "gfxPDFSurface.h"
#include "gfxOS2Surface.h"
#include "nsIPrintSettingsService.h"
#include "mozilla/Preferences.h"
using namespace mozilla;
PRINTDLG nsDeviceContextSpecOS2::PrnDlg;
//----------------------------------------------------------------------------------
// The printer data is shared between the PrinterEnumerator and the nsDeviceContextSpecOS2
// The PrinterEnumerator creates the printer info
// but the nsDeviceContextSpecOS2 cleans it up
// If it gets created (via the Page Setup Dialog) but the user never prints anything
// then it will never be delete, so this class takes care of that.
class GlobalPrinters {
public:
static GlobalPrinters* GetInstance() { return &mGlobalPrinters; }
~GlobalPrinters() { FreeGlobalPrinters(); }
void FreeGlobalPrinters();
nsresult InitializeGlobalPrinters();
bool PrintersAreAllocated() { return mGlobalPrinterList != nullptr; }
uint32_t GetNumPrinters() { return mGlobalNumPrinters; }
nsString* GetStringAt(int32_t aInx) { return &mGlobalPrinterList->ElementAt(aInx); }
void GetDefaultPrinterName(PRUnichar*& aDefaultPrinterName);
protected:
GlobalPrinters() {}
static GlobalPrinters mGlobalPrinters;
static nsTArray<nsString>* mGlobalPrinterList;
static ULONG mGlobalNumPrinters;
};
//---------------
// static members
GlobalPrinters GlobalPrinters::mGlobalPrinters;
nsTArray<nsString>* GlobalPrinters::mGlobalPrinterList = nullptr;
ULONG GlobalPrinters::mGlobalNumPrinters = 0;
//---------------
nsDeviceContextSpecOS2::nsDeviceContextSpecOS2()
: mQueue(nullptr), mPrintDC(nullptr), mPrintingStarted(false)
{
}
nsDeviceContextSpecOS2::~nsDeviceContextSpecOS2()
{
if (mQueue)
PrnClosePrinter(mQueue);
}
NS_IMPL_ISUPPORTS1(nsDeviceContextSpecOS2, nsIDeviceContextSpec)
void SetupDevModeFromSettings(ULONG printer, nsIPrintSettings* aPrintSettings)
{
if (aPrintSettings) {
int bufferSize = 3 * sizeof(DJP_ITEM);
PBYTE pDJP_Buffer = new BYTE[bufferSize];
memset(pDJP_Buffer, 0, bufferSize);
PDJP_ITEM pDJP = (PDJP_ITEM) pDJP_Buffer;
HDC hdc = nsDeviceContextSpecOS2::PrnDlg.GetDCHandle(printer);
char* driver = nsDeviceContextSpecOS2::PrnDlg.GetDriverType(printer);
// Setup Orientation
int32_t orientation;
aPrintSettings->GetOrientation(&orientation);
if (!strcmp(driver, "LASERJET"))
pDJP->lType = DJP_ALL;
else
pDJP->lType = DJP_CURRENT;
pDJP->cb = sizeof(DJP_ITEM);
pDJP->ulNumReturned = 1;
pDJP->ulProperty = DJP_SJ_ORIENTATION;
pDJP->ulValue = orientation == nsIPrintSettings::kPortraitOrientation?DJP_ORI_PORTRAIT:DJP_ORI_LANDSCAPE;
pDJP++;
// Setup Number of Copies
int32_t copies;
aPrintSettings->GetNumCopies(&copies);
pDJP->cb = sizeof(DJP_ITEM);
pDJP->lType = DJP_CURRENT;
pDJP->ulNumReturned = 1;
pDJP->ulProperty = DJP_SJ_COPIES;
pDJP->ulValue = copies;
pDJP++;
pDJP->cb = sizeof(DJP_ITEM);
pDJP->lType = DJP_NONE;
pDJP->ulNumReturned = 1;
pDJP->ulProperty = 0;
pDJP->ulValue = 0;
LONG driverSize = nsDeviceContextSpecOS2::PrnDlg.GetPrintDriverSize(printer);
GreEscape (hdc, DEVESC_SETJOBPROPERTIES, bufferSize, pDJP_Buffer,
&driverSize, PBYTE(nsDeviceContextSpecOS2::PrnDlg.GetPrintDriver(printer)));
delete [] pDJP_Buffer;
DevCloseDC(hdc);
}
}
nsresult nsDeviceContextSpecOS2::SetPrintSettingsFromDevMode(nsIPrintSettings* aPrintSettings, ULONG printer)
{
if (aPrintSettings == nullptr)
return NS_ERROR_FAILURE;
int bufferSize = 3 * sizeof(DJP_ITEM);
PBYTE pDJP_Buffer = new BYTE[bufferSize];
memset(pDJP_Buffer, 0, bufferSize);
PDJP_ITEM pDJP = (PDJP_ITEM) pDJP_Buffer;
HDC hdc = nsDeviceContextSpecOS2::PrnDlg.GetDCHandle(printer);
//Get Number of Copies from Job Properties
pDJP->lType = DJP_CURRENT;
pDJP->cb = sizeof(DJP_ITEM);
pDJP->ulNumReturned = 1;
pDJP->ulProperty = DJP_SJ_COPIES;
pDJP->ulValue = 1;
pDJP++;
//Get Orientation from Job Properties
pDJP->lType = DJP_CURRENT;
pDJP->cb = sizeof(DJP_ITEM);
pDJP->ulNumReturned = 1;
pDJP->ulProperty = DJP_SJ_ORIENTATION;
pDJP->ulValue = 1;
pDJP++;
pDJP->lType = DJP_NONE;
pDJP->cb = sizeof(DJP_ITEM);
pDJP->ulNumReturned = 1;
pDJP->ulProperty = 0;
pDJP->ulValue = 0;
LONG driverSize = nsDeviceContextSpecOS2::PrnDlg.GetPrintDriverSize(printer);
LONG rc = GreEscape(hdc, DEVESC_QUERYJOBPROPERTIES, bufferSize, pDJP_Buffer,
&driverSize, PBYTE(nsDeviceContextSpecOS2::PrnDlg.GetPrintDriver(printer)));
pDJP = (PDJP_ITEM) pDJP_Buffer;
if ((rc == DEV_OK) || (rc == DEV_WARNING)) {
while (pDJP->lType != DJP_NONE) {
if ((pDJP->ulProperty == DJP_SJ_ORIENTATION) && (pDJP->lType > 0)){
if ((pDJP->ulValue == DJP_ORI_PORTRAIT) || (pDJP->ulValue == DJP_ORI_REV_PORTRAIT))
aPrintSettings->SetOrientation(nsIPrintSettings::kPortraitOrientation);
else
aPrintSettings->SetOrientation(nsIPrintSettings::kLandscapeOrientation);
}
if ((pDJP->ulProperty == DJP_SJ_COPIES) && (pDJP->lType > 0)){
aPrintSettings->SetNumCopies(int32_t(pDJP->ulValue));
}
pDJP = DJP_NEXT_STRUCTP(pDJP);
}
}
delete [] pDJP_Buffer;
DevCloseDC(hdc);
return NS_OK;
}
NS_IMETHODIMP nsDeviceContextSpecOS2::Init(nsIWidget *aWidget,
nsIPrintSettings* aPS,
bool aIsPrintPreview)
{
nsresult rv = NS_ERROR_FAILURE;
mPrintSettings = aPS;
NS_ASSERTION(aPS, "Must have a PrintSettings!");
rv = GlobalPrinters::GetInstance()->InitializeGlobalPrinters();
if (NS_FAILED(rv)) {
return rv;
}
if (aPS) {
bool tofile = false;
int32_t copies = 1;
PRUnichar *printer = nullptr;
PRUnichar *printfile = nullptr;
mPrintSettings->GetPrinterName(&printer);
mPrintSettings->GetToFileName(&printfile);
mPrintSettings->GetPrintToFile(&tofile);
mPrintSettings->GetNumCopies(&copies);
if ((copies == 0) || (copies > 999)) {
GlobalPrinters::GetInstance()->FreeGlobalPrinters();
return NS_ERROR_FAILURE;
}
if (printfile != nullptr) {
// ToDo: Use LocalEncoding instead of UTF-8 (see bug 73446)
strcpy(mPrData.path, NS_ConvertUTF16toUTF8(printfile).get());
}
if (printer != nullptr)
strcpy(mPrData.printer, NS_ConvertUTF16toUTF8(printer).get());
if (aIsPrintPreview)
mPrData.destination = printPreview;
else if (tofile)
mPrData.destination = printToFile;
else
mPrData.destination = printToPrinter;
mPrData.copies = copies;
rv = GlobalPrinters::GetInstance()->InitializeGlobalPrinters();
if (NS_FAILED(rv))
return rv;
const nsAFlatString& printerUCS2 = NS_ConvertUTF8toUTF16(mPrData.printer);
ULONG numPrinters = GlobalPrinters::GetInstance()->GetNumPrinters();
if (numPrinters) {
for(ULONG i = 0; (i < numPrinters) && !mQueue; i++) {
if ((GlobalPrinters::GetInstance()->GetStringAt(i)->Equals(printerUCS2, nsCaseInsensitiveStringComparator()))) {
SetupDevModeFromSettings(i, aPS);
mQueue = PrnDlg.SetPrinterQueue(i);
}
}
}
if (printfile != nullptr)
nsMemory::Free(printfile);
if (printer != nullptr)
nsMemory::Free(printer);
}
GlobalPrinters::GetInstance()->FreeGlobalPrinters();
return rv;
}
NS_IMETHODIMP nsDeviceContextSpecOS2 :: GetDestination( int &aDestination )
{
aDestination = mPrData.destination;
return NS_OK;
}
NS_IMETHODIMP nsDeviceContextSpecOS2 :: GetPrinterName ( char **aPrinter )
{
*aPrinter = &mPrData.printer[0];
return NS_OK;
}
NS_IMETHODIMP nsDeviceContextSpecOS2 :: GetCopies ( int &aCopies )
{
aCopies = mPrData.copies;
return NS_OK;
}
NS_IMETHODIMP nsDeviceContextSpecOS2 :: GetPath ( char **aPath )
{
*aPath = &mPrData.path[0];
return NS_OK;
}
NS_IMETHODIMP nsDeviceContextSpecOS2 :: GetUserCancelled( bool &aCancel )
{
aCancel = mPrData.cancel;
return NS_OK;
}
/** -------------------------------------------------------
* Closes the printmanager if it is open.
* @update dc 2/15/98
*/
NS_IMETHODIMP nsDeviceContextSpecOS2 :: ClosePrintManager()
{
return NS_OK;
}
nsresult nsDeviceContextSpecOS2::GetPRTQUEUE( PRTQUEUE *&p)
{
p = mQueue;
return NS_OK;
}
NS_IMETHODIMP nsDeviceContextSpecOS2::GetSurfaceForPrinter(gfxASurface **surface)
{
NS_ASSERTION(mQueue, "Queue can't be NULL here");
nsRefPtr<gfxASurface> newSurface;
int16_t outputFormat;
mPrintSettings->GetOutputFormat(&outputFormat);
int printerDest;
GetDestination(printerDest);
if (printerDest != printPreview) {
// for now always set the output format to PDF, see bug 415522
outputFormat = nsIPrintSettings::kOutputFormatPDF;
mPrintSettings->SetOutputFormat(outputFormat); // save PDF format in settings
}
if (outputFormat == nsIPrintSettings::kOutputFormatPDF) {
nsXPIDLString filename;
mPrintSettings->GetToFileName(getter_Copies(filename));
nsresult rv;
if (filename.IsEmpty()) {
// print to a file that is visible, like one on the Desktop
nsCOMPtr<nsIFile> pdfLocation;
rv = NS_GetSpecialDirectory(NS_OS_DESKTOP_DIR, getter_AddRefs(pdfLocation));
NS_ENSURE_SUCCESS(rv, rv);
// construct a print output name using the current time, to make it
// unique and not overwrite existing files
char printName[CCHMAXPATH];
PRExplodedTime time;
PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &time);
snprintf(printName, CCHMAXPATH-1, "%s_%04d%02d%02d_%02d%02d%02d.pdf",
MOZ_APP_DISPLAYNAME, time.tm_year, time.tm_month+1, time.tm_mday,
time.tm_hour, time.tm_min, time.tm_sec);
printName[CCHMAXPATH-1] = '\0';
nsAutoCString printString(printName);
rv = pdfLocation->AppendNative(printString);
NS_ENSURE_SUCCESS(rv, rv);
rv = pdfLocation->GetPath(filename);
NS_ENSURE_SUCCESS(rv, rv);
}
#ifdef debug_thebes_print
printf("nsDeviceContextSpecOS2::GetSurfaceForPrinter(): print to filename=%s\n",
NS_LossyConvertUTF16toASCII(filename).get());
#endif
double width, height;
mPrintSettings->GetEffectivePageSize(&width, &height);
// convert twips to points
width /= TWIPS_PER_POINT_FLOAT;
height /= TWIPS_PER_POINT_FLOAT;
nsCOMPtr<nsIFile> file = do_CreateInstance("@mozilla.org/file/local;1");
rv = file->InitWithPath(filename);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIFileOutputStream> stream = do_CreateInstance("@mozilla.org/network/file-output-stream;1");
rv = stream->Init(file, -1, -1, 0);
if (NS_FAILED(rv))
return rv;
newSurface = new(std::nothrow) gfxPDFSurface(stream, gfxSize(width, height));
} else {
int numCopies = 0;
GetCopies(numCopies);
char *filename = nullptr;
if (printerDest == printToFile) {
GetPath(&filename);
}
mPrintingStarted = true;
mPrintDC = PrnOpenDC(mQueue, "Mozilla", numCopies, printerDest, filename);
double width, height;
mPrintSettings->GetEffectivePageSize(&width, &height);
#ifdef debug_thebes_print
printf("nsDeviceContextSpecOS2::GetSurfaceForPrinter(): %fx%ftwips, copies=%d\n",
width, height, numCopies);
#endif
// we need pixels, so scale from twips to the printer resolution
// and take into account that CAPS_*_RESOLUTION are in px/m, default
// to approx. 100dpi
double hDPI = 3937., vDPI = 3937.;
LONG value;
if (DevQueryCaps(mPrintDC, CAPS_HORIZONTAL_RESOLUTION, 1, &value))
hDPI = value * 0.0254;
if (DevQueryCaps(mPrintDC, CAPS_VERTICAL_RESOLUTION, 1, &value))
vDPI = value * 0.0254;
width = width * hDPI / 1440;
height = height * vDPI / 1440;
#ifdef debug_thebes_print
printf("nsDeviceContextSpecOS2::GetSurfaceForPrinter(): %fx%fpx (res=%fx%f)\n"
" expected size: %7.2f MiB\n",
width, height, hDPI, vDPI, width*height*4./1024./1024.);
#endif
// perhaps restrict to usable area
// (this or scaling down won't help, we will just get more pages and still crash!)
if (DevQueryCaps(mPrintDC, CAPS_WIDTH, 1, &value) && width > (double)value)
width = (double)value;
if (DevQueryCaps(mPrintDC, CAPS_HEIGHT, 1, &value) && height > (double)value)
height = (double)value;
#ifdef debug_thebes_print
printf("nsDeviceContextSpecOS2::GetSurfaceForPrinter(): capped? %fx%fpx (res=%fx%f)\n"
" expected size: %7.2f MiB per page\n",
width, height, hDPI, vDPI, width*height*4./1024./1024.);
#endif
// Now pass the created DC into the thebes surface for printing.
// It gets destroyed there.
newSurface = new(std::nothrow)
gfxOS2Surface(mPrintDC, gfxIntSize(int(ceil(width)), int(ceil(height))));
}
if (!newSurface) {
*surface = nullptr;
return NS_ERROR_FAILURE;
}
*surface = newSurface;
NS_ADDREF(*surface);
return NS_OK;
}
// Helper function to convert the string to the native codepage,
// similar to UnicodeToCodepage() in nsDragService.cpp.
char *GetACPString(const nsAString& aStr)
{
if (aStr.Length() == 0) {
return nullptr;
}
nsAutoCharBuffer buffer;
int32_t bufLength;
WideCharToMultiByte(0, PromiseFlatString(aStr).get(), aStr.Length(),
buffer, bufLength);
return ToNewCString(nsDependentCString(buffer.Elements()));
}
// Helper function to convert the string to the native codepage,
// similar to UnicodeToCodepage() in nsDragService.cpp.
char *GetACPString(const PRUnichar* aStr)
{
nsString str(aStr);
return GetACPString(str);
}
NS_IMETHODIMP nsDeviceContextSpecOS2::BeginDocument(const nsAString& aTitle,
PRUnichar* aPrintToFileName,
int32_t aStartPage,
int32_t aEndPage)
{
#ifdef debug_thebes_print
printf("nsDeviceContextSpecOS2[%#x]::BeginPrinting(%s, %s)\n", (unsigned)this,
NS_LossyConvertUTF16toASCII(aTitle).get(),
NS_LossyConvertUTF16toASCII(nsString(aPrintToFileName)).get());
#endif
// don't try to send device escapes for non-native output (like PDF)
int16_t outputFormat;
mPrintSettings->GetOutputFormat(&outputFormat);
if (outputFormat != nsIPrintSettings::kOutputFormatNative) {
return NS_OK;
}
char *title = GetACPString(aTitle);
PCSZ pszGenericDocName = "Mozilla Document";
PCSZ pszDocName = title ? title : pszGenericDocName;
LONG lResult = DevEscape(mPrintDC, DEVESC_STARTDOC,
strlen(pszDocName) + 1, const_cast<BYTE*>(pszDocName),
(PLONG)NULL, (PBYTE)NULL);
mPrintingStarted = true;
if (title) {
nsMemory::Free(title);
}
return lResult == DEV_OK ? NS_OK : NS_ERROR_GFX_PRINTER_STARTDOC;
}
NS_IMETHODIMP nsDeviceContextSpecOS2::EndDocument()
{
// don't try to send device escapes for non-native output (like PDF)
// but clear the filename to make sure that we don't overwrite it next time
int16_t outputFormat;
mPrintSettings->GetOutputFormat(&outputFormat);
if (outputFormat != nsIPrintSettings::kOutputFormatNative) {
mPrintSettings->SetToFileName(NULL);
nsCOMPtr<nsIPrintSettingsService> pss = do_GetService("@mozilla.org/gfx/printsettings-service;1");
if (pss)
pss->SavePrintSettingsToPrefs(mPrintSettings, true, nsIPrintSettings::kInitSaveToFileName);
return NS_OK;
}
LONG lOutCount = 2;
USHORT usJobID = 0;
LONG lResult = DevEscape(mPrintDC, DEVESC_ENDDOC, 0L, (PBYTE)NULL,
&lOutCount, (PBYTE)&usJobID);
return lResult == DEV_OK ? NS_OK : NS_ERROR_GFX_PRINTER_ENDDOC;
}
NS_IMETHODIMP nsDeviceContextSpecOS2::BeginPage()
{
int16_t outputFormat;
mPrintSettings->GetOutputFormat(&outputFormat);
if (outputFormat != nsIPrintSettings::kOutputFormatNative) {
return NS_OK;
}
if (mPrintingStarted) {
// we don't want an extra page break at the start of the document
mPrintingStarted = false;
return NS_OK;
}
LONG lResult = DevEscape(mPrintDC, DEVESC_NEWFRAME, 0L, (PBYTE)NULL,
(PLONG)NULL, (PBYTE)NULL);
return lResult == DEV_OK ? NS_OK : NS_ERROR_GFX_PRINTER_STARTPAGE;
}
NS_IMETHODIMP nsDeviceContextSpecOS2::EndPage()
{
return NS_OK;
}
// Printer Enumerator
nsPrinterEnumeratorOS2::nsPrinterEnumeratorOS2()
{
}
NS_IMPL_ISUPPORTS1(nsPrinterEnumeratorOS2, nsIPrinterEnumerator)
NS_IMETHODIMP nsPrinterEnumeratorOS2::GetPrinterNameList(nsIStringEnumerator **aPrinterNameList)
{
NS_ENSURE_ARG_POINTER(aPrinterNameList);
*aPrinterNameList = nullptr;
nsDeviceContextSpecOS2::PrnDlg.RefreshPrintQueue();
nsresult rv = GlobalPrinters::GetInstance()->InitializeGlobalPrinters();
if (NS_FAILED(rv)) {
return rv;
}
ULONG numPrinters = GlobalPrinters::GetInstance()->GetNumPrinters();
nsTArray<nsString> *printers = new nsTArray<nsString>(numPrinters);
if (!printers) {
GlobalPrinters::GetInstance()->FreeGlobalPrinters();
return NS_ERROR_OUT_OF_MEMORY;
}
ULONG count = 0;
while( count < numPrinters )
{
printers->AppendElement(*GlobalPrinters::GetInstance()->GetStringAt(count++));
}
GlobalPrinters::GetInstance()->FreeGlobalPrinters();
return NS_NewAdoptingStringEnumerator(aPrinterNameList, printers);
}
NS_IMETHODIMP nsPrinterEnumeratorOS2::GetDefaultPrinterName(PRUnichar * *aDefaultPrinterName)
{
NS_ENSURE_ARG_POINTER(aDefaultPrinterName);
GlobalPrinters::GetInstance()->GetDefaultPrinterName(*aDefaultPrinterName);
return NS_OK;
}
/* void initPrintSettingsFromPrinter (in wstring aPrinterName, in nsIPrintSettings aPrintSettings); */
NS_IMETHODIMP nsPrinterEnumeratorOS2::InitPrintSettingsFromPrinter(const PRUnichar *aPrinterName, nsIPrintSettings *aPrintSettings)
{
NS_ENSURE_ARG_POINTER(aPrinterName);
NS_ENSURE_ARG_POINTER(aPrintSettings);
if (!*aPrinterName)
return NS_OK;
if (NS_FAILED(GlobalPrinters::GetInstance()->InitializeGlobalPrinters()))
return NS_ERROR_FAILURE;
ULONG numPrinters = GlobalPrinters::GetInstance()->GetNumPrinters();
for(ULONG i = 0; i < numPrinters; i++) {
if ((GlobalPrinters::GetInstance()->GetStringAt(i)->Equals(aPrinterName, nsCaseInsensitiveStringComparator())))
nsDeviceContextSpecOS2::SetPrintSettingsFromDevMode(aPrintSettings, i);
}
// Free them, we won't need them for a while
GlobalPrinters::GetInstance()->FreeGlobalPrinters();
aPrintSettings->SetIsInitializedFromPrinter(true);
return NS_OK;
}
NS_IMETHODIMP nsPrinterEnumeratorOS2::DisplayPropertiesDlg(const PRUnichar *aPrinter, nsIPrintSettings *aPrintSettings)
{
nsresult rv = GlobalPrinters::GetInstance()->InitializeGlobalPrinters();
if (NS_FAILED(rv)) {
return rv;
}
ULONG numPrinters = GlobalPrinters::GetInstance()->GetNumPrinters();
for(ULONG i = 0; i < numPrinters; i++) {
if ((GlobalPrinters::GetInstance()->GetStringAt(i)->Equals(aPrinter, nsCaseInsensitiveStringComparator()))) {
SetupDevModeFromSettings(i, aPrintSettings);
if ( nsDeviceContextSpecOS2::PrnDlg.ShowProperties(i) ) {
nsDeviceContextSpecOS2::SetPrintSettingsFromDevMode(aPrintSettings, i);
return NS_OK;
} else {
return NS_ERROR_FAILURE;
}
}
}
return NS_ERROR_FAILURE;
}
nsresult GlobalPrinters::InitializeGlobalPrinters ()
{
if (PrintersAreAllocated())
return NS_OK;
mGlobalNumPrinters = 0;
mGlobalNumPrinters = nsDeviceContextSpecOS2::PrnDlg.GetNumPrinters();
if (!mGlobalNumPrinters)
return NS_ERROR_GFX_PRINTER_NO_PRINTER_AVAILABLE;
mGlobalPrinterList = new nsTArray<nsString>();
if (!mGlobalPrinterList)
return NS_ERROR_OUT_OF_MEMORY;
// don't return on failure, optional feature
BOOL prefFailed = (Preferences::GetRootBranch() == nullptr);
for (ULONG i = 0; i < mGlobalNumPrinters; i++) {
nsXPIDLCString printer;
nsDeviceContextSpecOS2::PrnDlg.GetPrinter(i, getter_Copies(printer));
nsAutoChar16Buffer printerName;
int32_t printerNameLength;
nsresult rv = MultiByteToWideChar(0, printer, strlen(printer),
printerName, printerNameLength);
mGlobalPrinterList->AppendElement(nsDependentString(printerName.Elements()));
// store printer description in prefs for the print dialog
if (!prefFailed) {
nsAutoCString printerDescription;
printerDescription = nsAutoCString(nsDeviceContextSpecOS2::PrnDlg.GetPrintDriver(i)->szDeviceName);
printerDescription += " (";
printerDescription += nsAutoCString(nsDeviceContextSpecOS2::PrnDlg.GetDriverType(i));
printerDescription += ")";
nsAutoCString prefName("print.printer_");
prefName += printer;
prefName += ".printer_description";
Preferences::SetCString(prefName.get(), printerDescription);
}
}
return NS_OK;
}
void GlobalPrinters::GetDefaultPrinterName(PRUnichar*& aDefaultPrinterName)
{
aDefaultPrinterName = nullptr;
nsresult rv = GlobalPrinters::GetInstance()->InitializeGlobalPrinters();
if (NS_FAILED(rv))
return;
if (GetNumPrinters() == 0)
return;
// the default printer is always index 0
nsXPIDLCString printer;
nsDeviceContextSpecOS2::PrnDlg.GetPrinter(0, getter_Copies(printer));
nsAutoChar16Buffer printerName;
int32_t printerNameLength;
MultiByteToWideChar(0, printer, strlen(printer), printerName,
printerNameLength);
aDefaultPrinterName = ToNewUnicode(nsDependentString(printerName.Elements()));
GlobalPrinters::GetInstance()->FreeGlobalPrinters();
}
void GlobalPrinters::FreeGlobalPrinters()
{
delete mGlobalPrinterList;
mGlobalPrinterList = nullptr;
mGlobalNumPrinters = 0;
}
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку