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Mypal/widget/windows/nsDeviceContextSpecWin.cpp

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/* -*- 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 "nsDeviceContextSpecWin.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/gfx/PrintTargetPDF.h"
#include "mozilla/gfx/PrintTargetWindows.h"
#include "mozilla/Logging.h"
#include "mozilla/Preferences.h"
#include "mozilla/RefPtr.h"
#include "prmem.h"
#include <winspool.h>
#include "nsIWidget.h"
#include "nsTArray.h"
#include "nsIPrintSettingsWin.h"
#include "nsString.h"
#include "nsIServiceManager.h"
#include "nsReadableUtils.h"
#include "nsStringEnumerator.h"
#include "gfxWindowsSurface.h"
#include "nsIFileStreams.h"
#include "nsIWindowWatcher.h"
#include "nsIDOMWindow.h"
#include "mozilla/Services.h"
#include "nsWindowsHelpers.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/Logging.h"
static mozilla::LazyLogModule kWidgetPrintingLogMod("printing-widget");
#define PR_PL(_p1) MOZ_LOG(kWidgetPrintingLogMod, mozilla::LogLevel::Debug, _p1)
using namespace mozilla;
using namespace mozilla::gfx;
static const wchar_t kDriverName[] = L"WINSPOOL";
//----------------------------------------------------------------------------------
// The printer data is shared between the PrinterEnumerator and the nsDeviceContextSpecWin
// The PrinterEnumerator creates the printer info
// but the nsDeviceContextSpecWin 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();
bool PrintersAreAllocated() { return mPrinters != nullptr; }
LPWSTR GetItemFromList(int32_t aInx) { return mPrinters?mPrinters->ElementAt(aInx):nullptr; }
nsresult EnumeratePrinterList();
void GetDefaultPrinterName(nsString& aDefaultPrinterName);
uint32_t GetNumPrinters() { return mPrinters?mPrinters->Length():0; }
protected:
GlobalPrinters() {}
nsresult EnumerateNativePrinters();
void ReallocatePrinters();
static GlobalPrinters mGlobalPrinters;
static nsTArray<LPWSTR>* mPrinters;
};
//---------------
// static members
GlobalPrinters GlobalPrinters::mGlobalPrinters;
nsTArray<LPWSTR>* GlobalPrinters::mPrinters = nullptr;
struct AutoFreeGlobalPrinters
{
~AutoFreeGlobalPrinters() {
GlobalPrinters::GetInstance()->FreeGlobalPrinters();
}
};
//----------------------------------------------------------------------------------
nsDeviceContextSpecWin::nsDeviceContextSpecWin()
{
mDriverName = nullptr;
mDeviceName = nullptr;
mDevMode = nullptr;
}
//----------------------------------------------------------------------------------
NS_IMPL_ISUPPORTS(nsDeviceContextSpecWin, nsIDeviceContextSpec)
nsDeviceContextSpecWin::~nsDeviceContextSpecWin()
{
SetDeviceName(nullptr);
SetDriverName(nullptr);
SetDevMode(nullptr);
nsCOMPtr<nsIPrintSettingsWin> psWin(do_QueryInterface(mPrintSettings));
if (psWin) {
psWin->SetDeviceName(nullptr);
psWin->SetDriverName(nullptr);
psWin->SetDevMode(nullptr);
}
// Free them, we won't need them for a while
GlobalPrinters::GetInstance()->FreeGlobalPrinters();
}
//------------------------------------------------------------------
// helper
static char16_t * GetDefaultPrinterNameFromGlobalPrinters()
{
nsAutoString printerName;
GlobalPrinters::GetInstance()->GetDefaultPrinterName(printerName);
return ToNewUnicode(printerName);
}
//----------------------------------------------------------------------------------
NS_IMETHODIMP nsDeviceContextSpecWin::Init(nsIWidget* aWidget,
nsIPrintSettings* aPrintSettings,
bool aIsPrintPreview)
{
mPrintSettings = aPrintSettings;
nsresult rv = NS_ERROR_GFX_PRINTER_NO_PRINTER_AVAILABLE;
if (aPrintSettings) {
// If we're in the child and printing via the parent or we're printing to
// PDF we only need information from the print settings.
mPrintSettings->GetOutputFormat(&mOutputFormat);
if ((XRE_IsContentProcess() &&
Preferences::GetBool("print.print_via_parent")) ||
mOutputFormat == nsIPrintSettings::kOutputFormatPDF) {
return NS_OK;
}
nsCOMPtr<nsIPrintSettingsWin> psWin(do_QueryInterface(aPrintSettings));
if (psWin) {
char16_t* deviceName;
char16_t* driverName;
psWin->GetDeviceName(&deviceName); // creates new memory (makes a copy)
psWin->GetDriverName(&driverName); // creates new memory (makes a copy)
LPDEVMODEW devMode;
psWin->GetDevMode(&devMode); // creates new memory (makes a copy)
if (deviceName && driverName && devMode) {
// Scaling is special, it is one of the few
// devMode items that we control in layout
if (devMode->dmFields & DM_SCALE) {
double scale = double(devMode->dmScale) / 100.0f;
if (scale != 1.0) {
aPrintSettings->SetScaling(scale);
devMode->dmScale = 100;
}
}
SetDeviceName(deviceName);
SetDriverName(driverName);
SetDevMode(devMode);
// clean up
free(deviceName);
free(driverName);
return NS_OK;
} else {
PR_PL(("***** nsDeviceContextSpecWin::Init - deviceName/driverName/devMode was NULL!\n"));
if (deviceName) free(deviceName);
if (driverName) free(driverName);
if (devMode) ::HeapFree(::GetProcessHeap(), 0, devMode);
}
}
} else {
PR_PL(("***** nsDeviceContextSpecWin::Init - aPrintSettingswas NULL!\n"));
}
// Get the Printer Name to be used and output format.
char16_t * printerName = nullptr;
if (mPrintSettings) {
mPrintSettings->GetPrinterName(&printerName);
}
// If there is no name then use the default printer
if (!printerName || (printerName && !*printerName)) {
printerName = GetDefaultPrinterNameFromGlobalPrinters();
}
NS_ASSERTION(printerName, "We have to have a printer name");
if (!printerName || !*printerName) return rv;
return GetDataFromPrinter(printerName, mPrintSettings);
}
//----------------------------------------------------------
// Helper Function - Free and reallocate the string
static void CleanAndCopyString(wchar_t*& aStr, const wchar_t* aNewStr)
{
if (aStr != nullptr) {
if (aNewStr != nullptr && wcslen(aStr) > wcslen(aNewStr)) { // reuse it if we can
wcscpy(aStr, aNewStr);
return;
} else {
PR_Free(aStr);
aStr = nullptr;
}
}
if (nullptr != aNewStr) {
aStr = (wchar_t *)PR_Malloc(sizeof(wchar_t)*(wcslen(aNewStr) + 1));
wcscpy(aStr, aNewStr);
}
}
already_AddRefed<PrintTarget> nsDeviceContextSpecWin::MakePrintTarget()
{
NS_ASSERTION(mDevMode, "DevMode can't be NULL here");
if (mOutputFormat == nsIPrintSettings::kOutputFormatPDF) {
nsXPIDLString filename;
mPrintSettings->GetToFileName(getter_Copies(filename));
double width, height;
mPrintSettings->GetEffectivePageSize(&width, &height);
if (width <= 0 || height <= 0) {
return nullptr;
}
// convert twips to points
width /= TWIPS_PER_POINT_FLOAT;
height /= TWIPS_PER_POINT_FLOAT;
nsCOMPtr<nsIFile> file = do_CreateInstance("@mozilla.org/file/local;1");
nsresult rv = file->InitWithPath(filename);
if (NS_FAILED(rv)) {
return nullptr;
}
nsCOMPtr<nsIFileOutputStream> stream = do_CreateInstance("@mozilla.org/network/file-output-stream;1");
rv = stream->Init(file, -1, -1, 0);
if (NS_FAILED(rv)) {
return nullptr;
}
return PrintTargetPDF::CreateOrNull(stream, IntSize::Truncate(width, height));
}
if (mDevMode) {
NS_WARNING_ASSERTION(mDriverName, "No driver!");
HDC dc = ::CreateDCW(mDriverName, mDeviceName, nullptr, mDevMode);
if (!dc) {
gfxCriticalError(gfxCriticalError::DefaultOptions(false))
<< "Failed to create device context in GetSurfaceForPrinter";
return nullptr;
}
// The PrintTargetWindows takes over ownership of this DC
return PrintTargetWindows::CreateOrNull(dc);
}
return nullptr;
}
float
nsDeviceContextSpecWin::GetDPI()
{
// To match the previous printing code we need to return 72 when printing to
// PDF and 144 when printing to a Windows surface.
return mOutputFormat == nsIPrintSettings::kOutputFormatPDF ? 72.0f : 144.0f;
}
float
nsDeviceContextSpecWin::GetPrintingScale()
{
MOZ_ASSERT(mPrintSettings);
// To match the previous printing code there is no scaling for PDF.
if (mOutputFormat == nsIPrintSettings::kOutputFormatPDF) {
return 1.0f;
}
// The print settings will have the resolution stored from the real device.
int32_t resolution;
mPrintSettings->GetResolution(&resolution);
return float(resolution) / GetDPI();
}
//----------------------------------------------------------------------------------
void nsDeviceContextSpecWin::SetDeviceName(char16ptr_t aDeviceName)
{
CleanAndCopyString(mDeviceName, aDeviceName);
}
//----------------------------------------------------------------------------------
void nsDeviceContextSpecWin::SetDriverName(char16ptr_t aDriverName)
{
CleanAndCopyString(mDriverName, aDriverName);
}
//----------------------------------------------------------------------------------
void nsDeviceContextSpecWin::SetDevMode(LPDEVMODEW aDevMode)
{
if (mDevMode) {
::HeapFree(::GetProcessHeap(), 0, mDevMode);
}
mDevMode = aDevMode;
}
//------------------------------------------------------------------
void
nsDeviceContextSpecWin::GetDevMode(LPDEVMODEW &aDevMode)
{
aDevMode = mDevMode;
}
#define DISPLAY_LAST_ERROR
//----------------------------------------------------------------------------------
// Setup the object's data member with the selected printer's data
nsresult
nsDeviceContextSpecWin::GetDataFromPrinter(char16ptr_t aName, nsIPrintSettings* aPS)
{
nsresult rv = NS_ERROR_FAILURE;
if (!GlobalPrinters::GetInstance()->PrintersAreAllocated()) {
rv = GlobalPrinters::GetInstance()->EnumeratePrinterList();
if (NS_FAILED(rv)) {
PR_PL(("***** nsDeviceContextSpecWin::GetDataFromPrinter - Couldn't enumerate printers!\n"));
DISPLAY_LAST_ERROR
}
NS_ENSURE_SUCCESS(rv, rv);
}
nsHPRINTER hPrinter = nullptr;
wchar_t *name = (wchar_t*)aName; // Windows APIs use non-const name argument
BOOL status = ::OpenPrinterW(name, &hPrinter, nullptr);
if (status) {
nsAutoPrinter autoPrinter(hPrinter);
LPDEVMODEW pDevMode;
// Allocate a buffer of the correct size.
LONG needed = ::DocumentPropertiesW(nullptr, hPrinter, name, nullptr,
nullptr, 0);
if (needed < 0) {
PR_PL(("**** nsDeviceContextSpecWin::GetDataFromPrinter - Couldn't get "
"size of DEVMODE using DocumentPropertiesW(pDeviceName = \"%s\"). "
"GetLastEror() = %08x\n",
aName ? NS_ConvertUTF16toUTF8(aName).get() : "", GetLastError()));
return NS_ERROR_FAILURE;
}
pDevMode = (LPDEVMODEW)::HeapAlloc(::GetProcessHeap(), HEAP_ZERO_MEMORY,
needed);
if (!pDevMode) return NS_ERROR_FAILURE;
// Get the default DevMode for the printer and modify it for our needs.
LONG ret = ::DocumentPropertiesW(nullptr, hPrinter, name,
pDevMode, nullptr, DM_OUT_BUFFER);
if (ret == IDOK && aPS) {
nsCOMPtr<nsIPrintSettingsWin> psWin = do_QueryInterface(aPS);
MOZ_ASSERT(psWin);
psWin->CopyToNative(pDevMode);
// Sets back the changes we made to the DevMode into the Printer Driver
ret = ::DocumentPropertiesW(nullptr, hPrinter, name,
pDevMode, pDevMode,
DM_IN_BUFFER | DM_OUT_BUFFER);
// We need to copy the final DEVMODE settings back to our print settings,
// because they may have been set from invalid prefs.
if (ret == IDOK) {
// We need to get information from the device as well.
nsAutoHDC printerDC(::CreateICW(kDriverName, aName, nullptr, pDevMode));
if (NS_WARN_IF(!printerDC)) {
::HeapFree(::GetProcessHeap(), 0, pDevMode);
return NS_ERROR_FAILURE;
}
psWin->CopyFromNative(printerDC, pDevMode);
}
}
if (ret != IDOK) {
::HeapFree(::GetProcessHeap(), 0, pDevMode);
PR_PL(("***** nsDeviceContextSpecWin::GetDataFromPrinter - DocumentProperties call failed code: %d/0x%x\n", ret, ret));
DISPLAY_LAST_ERROR
return NS_ERROR_FAILURE;
}
SetDevMode(pDevMode); // cache the pointer and takes responsibility for the memory
SetDeviceName(aName);
SetDriverName(kDriverName);
rv = NS_OK;
} else {
rv = NS_ERROR_GFX_PRINTER_NAME_NOT_FOUND;
PR_PL(("***** nsDeviceContextSpecWin::GetDataFromPrinter - Couldn't open printer: [%s]\n", NS_ConvertUTF16toUTF8(aName).get()));
DISPLAY_LAST_ERROR
}
return rv;
}
//***********************************************************
// Printer Enumerator
//***********************************************************
nsPrinterEnumeratorWin::nsPrinterEnumeratorWin()
{
}
nsPrinterEnumeratorWin::~nsPrinterEnumeratorWin()
{
// Do not free printers here
// GlobalPrinters::GetInstance()->FreeGlobalPrinters();
}
NS_IMPL_ISUPPORTS(nsPrinterEnumeratorWin, nsIPrinterEnumerator)
//----------------------------------------------------------------------------------
// Return the Default Printer name
NS_IMETHODIMP
nsPrinterEnumeratorWin::GetDefaultPrinterName(char16_t * *aDefaultPrinterName)
{
NS_ENSURE_ARG_POINTER(aDefaultPrinterName);
*aDefaultPrinterName = GetDefaultPrinterNameFromGlobalPrinters(); // helper
return NS_OK;
}
NS_IMETHODIMP
nsPrinterEnumeratorWin::InitPrintSettingsFromPrinter(const char16_t *aPrinterName, nsIPrintSettings *aPrintSettings)
{
NS_ENSURE_ARG_POINTER(aPrinterName);
NS_ENSURE_ARG_POINTER(aPrintSettings);
if (!*aPrinterName) {
return NS_OK;
}
// When printing to PDF on Windows there is no associated printer driver.
int16_t outputFormat;
aPrintSettings->GetOutputFormat(&outputFormat);
if (outputFormat == nsIPrintSettings::kOutputFormatPDF) {
return NS_OK;
}
RefPtr<nsDeviceContextSpecWin> devSpecWin = new nsDeviceContextSpecWin();
if (!devSpecWin) return NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(GlobalPrinters::GetInstance()->EnumeratePrinterList())) {
return NS_ERROR_FAILURE;
}
AutoFreeGlobalPrinters autoFreeGlobalPrinters;
// If the settings have already been initialized from prefs then pass these to
// GetDataFromPrinter, so that they are saved to the printer.
bool initializedFromPrefs;
nsresult rv =
aPrintSettings->GetIsInitializedFromPrefs(&initializedFromPrefs);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (initializedFromPrefs) {
// If we pass in print settings to GetDataFromPrinter it already copies
// things back to the settings, so we can return here.
return devSpecWin->GetDataFromPrinter(aPrinterName, aPrintSettings);
}
devSpecWin->GetDataFromPrinter(aPrinterName);
LPDEVMODEW devmode;
devSpecWin->GetDevMode(devmode);
if (NS_WARN_IF(!devmode)) {
return NS_ERROR_FAILURE;
}
aPrintSettings->SetPrinterName(aPrinterName);
// We need to get information from the device as well.
char16ptr_t printerName = aPrinterName;
HDC dc = ::CreateICW(kDriverName, printerName, nullptr, devmode);
if (NS_WARN_IF(!dc)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPrintSettingsWin> psWin = do_QueryInterface(aPrintSettings);
MOZ_ASSERT(psWin);
psWin->CopyFromNative(dc, devmode);
::DeleteDC(dc);
return NS_OK;
}
//----------------------------------------------------------------------------------
// Enumerate all the Printers from the global array and pass their
// names back (usually to script)
NS_IMETHODIMP
nsPrinterEnumeratorWin::GetPrinterNameList(nsIStringEnumerator **aPrinterNameList)
{
NS_ENSURE_ARG_POINTER(aPrinterNameList);
*aPrinterNameList = nullptr;
nsresult rv = GlobalPrinters::GetInstance()->EnumeratePrinterList();
if (NS_FAILED(rv)) {
PR_PL(("***** nsDeviceContextSpecWin::GetPrinterNameList - Couldn't enumerate printers!\n"));
return rv;
}
uint32_t numPrinters = GlobalPrinters::GetInstance()->GetNumPrinters();
nsTArray<nsString> *printers = new nsTArray<nsString>(numPrinters);
if (!printers)
return NS_ERROR_OUT_OF_MEMORY;
nsString* names = printers->AppendElements(numPrinters);
for (uint32_t printerInx = 0; printerInx < numPrinters; ++printerInx) {
LPWSTR name = GlobalPrinters::GetInstance()->GetItemFromList(printerInx);
names[printerInx].Assign(name);
}
return NS_NewAdoptingStringEnumerator(aPrinterNameList, printers);
}
//----------------------------------------------------------------------------------
//-- Global Printers
//----------------------------------------------------------------------------------
//----------------------------------------------------------------------------------
// THe array hold the name and port for each printer
void
GlobalPrinters::ReallocatePrinters()
{
if (PrintersAreAllocated()) {
FreeGlobalPrinters();
}
mPrinters = new nsTArray<LPWSTR>();
NS_ASSERTION(mPrinters, "Printers Array is NULL!");
}
//----------------------------------------------------------------------------------
void
GlobalPrinters::FreeGlobalPrinters()
{
if (mPrinters != nullptr) {
for (uint32_t i=0;i<mPrinters->Length();i++) {
free(mPrinters->ElementAt(i));
}
delete mPrinters;
mPrinters = nullptr;
}
}
//----------------------------------------------------------------------------------
nsresult
GlobalPrinters::EnumerateNativePrinters()
{
nsresult rv = NS_ERROR_GFX_PRINTER_NO_PRINTER_AVAILABLE;
PR_PL(("-----------------------\n"));
PR_PL(("EnumerateNativePrinters\n"));
WCHAR szDefaultPrinterName[1024];
DWORD status = GetProfileStringW(L"devices", 0, L",",
szDefaultPrinterName,
ArrayLength(szDefaultPrinterName));
if (status > 0) {
DWORD count = 0;
LPWSTR sPtr = szDefaultPrinterName;
LPWSTR ePtr = szDefaultPrinterName + status;
LPWSTR prvPtr = sPtr;
while (sPtr < ePtr) {
if (*sPtr == 0) {
LPWSTR name = wcsdup(prvPtr);
mPrinters->AppendElement(name);
PR_PL(("Printer Name: %s\n", prvPtr));
prvPtr = sPtr+1;
count++;
}
sPtr++;
}
rv = NS_OK;
}
PR_PL(("-----------------------\n"));
return rv;
}
//------------------------------------------------------------------
// Uses the GetProfileString to get the default printer from the registry
void
GlobalPrinters::GetDefaultPrinterName(nsString& aDefaultPrinterName)
{
aDefaultPrinterName.Truncate();
WCHAR szDefaultPrinterName[1024];
DWORD status = GetProfileStringW(L"windows", L"device", 0,
szDefaultPrinterName,
ArrayLength(szDefaultPrinterName));
if (status > 0) {
WCHAR comma = ',';
LPWSTR sPtr = szDefaultPrinterName;
while (*sPtr != comma && *sPtr != 0)
sPtr++;
if (*sPtr == comma) {
*sPtr = 0;
}
aDefaultPrinterName = szDefaultPrinterName;
} else {
aDefaultPrinterName = EmptyString();
}
PR_PL(("DEFAULT PRINTER [%s]\n", aDefaultPrinterName.get()));
}
//----------------------------------------------------------------------------------
// This goes and gets the list of available printers and puts
// the default printer at the beginning of the list
nsresult
GlobalPrinters::EnumeratePrinterList()
{
// reallocate and get a new list each time it is asked for
// this deletes the list and re-allocates them
ReallocatePrinters();
// any of these could only fail with an OUT_MEMORY_ERROR
// PRINTER_ENUM_LOCAL should get the network printers on Win95
nsresult rv = EnumerateNativePrinters();
if (NS_FAILED(rv)) return rv;
// get the name of the default printer
nsAutoString defPrinterName;
GetDefaultPrinterName(defPrinterName);
// put the default printer at the beginning of list
if (!defPrinterName.IsEmpty()) {
for (uint32_t i=0;i<mPrinters->Length();i++) {
LPWSTR name = mPrinters->ElementAt(i);
if (defPrinterName.Equals(name)) {
if (i > 0) {
LPWSTR ptr = mPrinters->ElementAt(0);
mPrinters->ElementAt(0) = name;
mPrinters->ElementAt(i) = ptr;
}
break;
}
}
}
// make sure we at least tried to get the printers
if (!PrintersAreAllocated()) {
PR_PL(("***** nsDeviceContextSpecWin::EnumeratePrinterList - Printers aren`t allocated\n"));
return NS_ERROR_FAILURE;
}
return NS_OK;
}
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