зеркало из https://github.com/mozilla/gecko-dev.git
498 строки
16 KiB
C++
498 строки
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsDeviceContextSpecG.h"
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#include "mozilla/gfx/PrintTargetPDF.h"
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#include "mozilla/gfx/PrintTargetPS.h"
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#include "mozilla/Logging.h"
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#include "plstr.h"
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#include "prenv.h" /* for PR_GetEnv */
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#include "nsPrintfCString.h"
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#include "nsReadableUtils.h"
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#include "nsStringEnumerator.h"
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#include "nsIServiceManager.h"
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#include "nsThreadUtils.h"
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#include "nsPSPrinters.h"
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#include "nsPaperPS.h" /* Paper size list */
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#include "nsPrintSettingsGTK.h"
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#include "nsIFileStreams.h"
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#include "nsIFile.h"
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#include "nsTArray.h"
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#include "nsThreadUtils.h"
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#include "mozilla/Preferences.h"
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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using namespace mozilla;
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using mozilla::gfx::IntSize;
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using mozilla::gfx::PrintTarget;
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using mozilla::gfx::PrintTargetPDF;
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using mozilla::gfx::PrintTargetPS;
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static PRLogModuleInfo *
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GetDeviceContextSpecGTKLog()
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{
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static PRLogModuleInfo *sLog;
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if (!sLog)
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sLog = PR_NewLogModule("DeviceContextSpecGTK");
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return sLog;
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}
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/* Macro to make lines shorter */
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#define DO_PR_DEBUG_LOG(x) MOZ_LOG(GetDeviceContextSpecGTKLog(), mozilla::LogLevel::Debug, x)
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//----------------------------------------------------------------------------------
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// The printer data is shared between the PrinterEnumerator and the nsDeviceContextSpecGTK
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// The PrinterEnumerator creates the printer info
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// but the nsDeviceContextSpecGTK cleans it up
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// If it gets created (via the Page Setup Dialog) but the user never prints anything
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// then it will never be delete, so this class takes care of that.
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class GlobalPrinters {
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public:
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static GlobalPrinters* GetInstance() { return &mGlobalPrinters; }
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~GlobalPrinters() { FreeGlobalPrinters(); }
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void FreeGlobalPrinters();
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nsresult InitializeGlobalPrinters();
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bool PrintersAreAllocated() { return mGlobalPrinterList != nullptr; }
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uint32_t GetNumPrinters()
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{ return mGlobalPrinterList ? mGlobalPrinterList->Length() : 0; }
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nsString* GetStringAt(int32_t aInx) { return &mGlobalPrinterList->ElementAt(aInx); }
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void GetDefaultPrinterName(char16_t **aDefaultPrinterName);
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protected:
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GlobalPrinters() {}
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static GlobalPrinters mGlobalPrinters;
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static nsTArray<nsString>* mGlobalPrinterList;
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};
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//---------------
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// static members
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GlobalPrinters GlobalPrinters::mGlobalPrinters;
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nsTArray<nsString>* GlobalPrinters::mGlobalPrinterList = nullptr;
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//---------------
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nsDeviceContextSpecGTK::nsDeviceContextSpecGTK()
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: mGtkPrintSettings(nullptr)
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, mGtkPageSetup(nullptr)
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{
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DO_PR_DEBUG_LOG(("nsDeviceContextSpecGTK::nsDeviceContextSpecGTK()\n"));
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}
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nsDeviceContextSpecGTK::~nsDeviceContextSpecGTK()
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{
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DO_PR_DEBUG_LOG(("nsDeviceContextSpecGTK::~nsDeviceContextSpecGTK()\n"));
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if (mGtkPageSetup) {
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g_object_unref(mGtkPageSetup);
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}
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if (mGtkPrintSettings) {
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g_object_unref(mGtkPrintSettings);
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}
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}
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NS_IMPL_ISUPPORTS(nsDeviceContextSpecGTK,
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nsIDeviceContextSpec)
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already_AddRefed<PrintTarget> nsDeviceContextSpecGTK::MakePrintTarget()
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{
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double width, height;
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mPrintSettings->GetEffectivePageSize(&width, &height);
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// convert twips to points
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width /= TWIPS_PER_POINT_FLOAT;
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height /= TWIPS_PER_POINT_FLOAT;
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DO_PR_DEBUG_LOG(("\"%s\", %f, %f\n", mPath, width, height));
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nsresult rv;
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// We shouldn't be attempting to get a surface if we've already got a spool
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// file.
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MOZ_ASSERT(!mSpoolFile);
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// Spool file. Use Glib's temporary file function since we're
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// already dependent on the gtk software stack.
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gchar *buf;
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gint fd = g_file_open_tmp("XXXXXX.tmp", &buf, nullptr);
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if (-1 == fd)
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return nullptr;
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close(fd);
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rv = NS_NewNativeLocalFile(nsDependentCString(buf), false,
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getter_AddRefs(mSpoolFile));
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if (NS_FAILED(rv)) {
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unlink(buf);
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return nullptr;
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}
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mSpoolName = buf;
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g_free(buf);
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mSpoolFile->SetPermissions(0600);
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nsCOMPtr<nsIFileOutputStream> stream = do_CreateInstance("@mozilla.org/network/file-output-stream;1");
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rv = stream->Init(mSpoolFile, -1, -1, 0);
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if (NS_FAILED(rv))
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return nullptr;
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int16_t format;
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mPrintSettings->GetOutputFormat(&format);
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// Determine the real format with some GTK magic
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if (format == nsIPrintSettings::kOutputFormatNative) {
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if (mIsPPreview) {
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// There is nothing to detect on Print Preview, use PS.
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format = nsIPrintSettings::kOutputFormatPS;
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} else {
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return nullptr;
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}
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}
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IntSize size = IntSize::Truncate(width, height);
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if (format == nsIPrintSettings::kOutputFormatPDF) {
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return PrintTargetPDF::CreateOrNull(stream, size);
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}
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int32_t orientation;
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mPrintSettings->GetOrientation(&orientation);
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return PrintTargetPS::CreateOrNull(stream,
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size,
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orientation == nsIPrintSettings::kPortraitOrientation
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? PrintTargetPS::PORTRAIT
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: PrintTargetPS::LANDSCAPE);
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}
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/** -------------------------------------------------------
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* Initialize the nsDeviceContextSpecGTK
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* @update dc 2/15/98
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* @update syd 3/2/99
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*/
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NS_IMETHODIMP nsDeviceContextSpecGTK::Init(nsIWidget *aWidget,
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nsIPrintSettings* aPS,
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bool aIsPrintPreview)
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{
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DO_PR_DEBUG_LOG(("nsDeviceContextSpecGTK::Init(aPS=%p)\n", aPS));
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if (gtk_major_version < 2 ||
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(gtk_major_version == 2 && gtk_minor_version < 10))
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return NS_ERROR_NOT_AVAILABLE; // I'm so sorry bz
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mPrintSettings = do_QueryInterface(aPS);
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if (!mPrintSettings)
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return NS_ERROR_NO_INTERFACE;
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mIsPPreview = aIsPrintPreview;
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// This is only set by embedders
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bool toFile;
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aPS->GetPrintToFile(&toFile);
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mToPrinter = !toFile && !aIsPrintPreview;
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mGtkPrintSettings = mPrintSettings->GetGtkPrintSettings();
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mGtkPageSetup = mPrintSettings->GetGtkPageSetup();
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// This is a horrible workaround for some printer driver bugs that treat custom page sizes different
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// to standard ones. If our paper object matches one of a standard one, use a standard paper size
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// object instead. See bug 414314 for more info.
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GtkPaperSize* geckosHackishPaperSize = gtk_page_setup_get_paper_size(mGtkPageSetup);
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GtkPaperSize* standardGtkPaperSize = gtk_paper_size_new(gtk_paper_size_get_name(geckosHackishPaperSize));
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mGtkPageSetup = gtk_page_setup_copy(mGtkPageSetup);
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mGtkPrintSettings = gtk_print_settings_copy(mGtkPrintSettings);
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GtkPaperSize* properPaperSize;
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if (gtk_paper_size_is_equal(geckosHackishPaperSize, standardGtkPaperSize)) {
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properPaperSize = standardGtkPaperSize;
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} else {
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properPaperSize = geckosHackishPaperSize;
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}
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gtk_print_settings_set_paper_size(mGtkPrintSettings, properPaperSize);
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gtk_page_setup_set_paper_size_and_default_margins(mGtkPageSetup, properPaperSize);
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gtk_paper_size_free(standardGtkPaperSize);
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return NS_OK;
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}
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static void
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#if (MOZ_WIDGET_GTK == 3)
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print_callback(GtkPrintJob *aJob, gpointer aData, const GError *aError) {
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#else
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print_callback(GtkPrintJob *aJob, gpointer aData, GError *aError) {
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#endif
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g_object_unref(aJob);
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((nsIFile*) aData)->Remove(false);
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}
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static void
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ns_release_macro(gpointer aData) {
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nsIFile* spoolFile = (nsIFile*) aData;
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NS_RELEASE(spoolFile);
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}
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/* static */
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gboolean nsDeviceContextSpecGTK::PrinterEnumerator(GtkPrinter *aPrinter,
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gpointer aData) {
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nsDeviceContextSpecGTK *spec = (nsDeviceContextSpecGTK*)aData;
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// Find the printer whose name matches the one inside the settings.
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nsXPIDLString printerName;
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nsresult rv =
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spec->mPrintSettings->GetPrinterName(getter_Copies(printerName));
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if (NS_SUCCEEDED(rv) && printerName) {
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NS_ConvertUTF16toUTF8 requestedName(printerName);
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const char* currentName = gtk_printer_get_name(aPrinter);
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if (requestedName.Equals(currentName)) {
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spec->mPrintSettings->SetGtkPrinter(aPrinter);
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// Bug 1145916 - attempting to kick off a print job for this printer
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// during this tick of the event loop will result in the printer backend
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// misunderstanding what the capabilities of the printer are due to a
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// GTK bug (https://bugzilla.gnome.org/show_bug.cgi?id=753041). We
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// sidestep this by deferring the print to the next tick.
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NS_DispatchToCurrentThread(NewRunnableMethod(spec, &nsDeviceContextSpecGTK::StartPrintJob));
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return TRUE;
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}
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}
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// We haven't found it yet - keep searching...
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return FALSE;
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}
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void nsDeviceContextSpecGTK::StartPrintJob() {
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GtkPrintJob* job = gtk_print_job_new(mTitle.get(),
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mPrintSettings->GetGtkPrinter(),
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mGtkPrintSettings,
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mGtkPageSetup);
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if (!gtk_print_job_set_source_file(job, mSpoolName.get(), nullptr))
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return;
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NS_ADDREF(mSpoolFile.get());
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gtk_print_job_send(job, print_callback, mSpoolFile, ns_release_macro);
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}
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void
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nsDeviceContextSpecGTK::EnumeratePrinters()
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{
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gtk_enumerate_printers(&nsDeviceContextSpecGTK::PrinterEnumerator, this,
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nullptr, TRUE);
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}
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NS_IMETHODIMP
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nsDeviceContextSpecGTK::BeginDocument(const nsAString& aTitle,
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const nsAString& aPrintToFileName,
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int32_t aStartPage, int32_t aEndPage)
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{
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mTitle.Truncate();
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AppendUTF16toUTF8(aTitle, mTitle);
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return NS_OK;
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}
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NS_IMETHODIMP nsDeviceContextSpecGTK::EndDocument()
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{
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if (mToPrinter) {
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// At this point, we might have a GtkPrinter set up in nsPrintSettingsGTK,
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// or we might not. In the single-process case, we probably will, as this
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// is populated by the print settings dialog, or set to the default
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// printer.
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// In the multi-process case, we proxy the print settings dialog over to
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// the parent process, and only get the name of the printer back on the
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// content process side. In that case, we need to enumerate the printers
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// on the content side, and find a printer with a matching name.
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GtkPrinter* printer = mPrintSettings->GetGtkPrinter();
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if (printer) {
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// We have a printer, so we can print right away.
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StartPrintJob();
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} else {
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// We don't have a printer. We have to enumerate the printers and find
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// one with a matching name.
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NS_DispatchToCurrentThread(NewRunnableMethod(this, &nsDeviceContextSpecGTK::EnumeratePrinters));
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}
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} else {
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// Handle print-to-file ourselves for the benefit of embedders
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nsXPIDLString targetPath;
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nsCOMPtr<nsIFile> destFile;
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mPrintSettings->GetToFileName(getter_Copies(targetPath));
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nsresult rv = NS_NewLocalFile(targetPath, false, getter_AddRefs(destFile));
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NS_ENSURE_SUCCESS(rv, rv);
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nsAutoString destLeafName;
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rv = destFile->GetLeafName(destLeafName);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIFile> destDir;
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rv = destFile->GetParent(getter_AddRefs(destDir));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mSpoolFile->MoveTo(destDir, destLeafName);
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NS_ENSURE_SUCCESS(rv, rv);
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// This is the standard way to get the UNIX umask. Ugh.
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mode_t mask = umask(0);
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umask(mask);
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// If you're not familiar with umasks, they contain the bits of what NOT to set in the permissions
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// (thats because files and directories have different numbers of bits for their permissions)
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destFile->SetPermissions(0666 & ~(mask));
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}
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return NS_OK;
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}
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// Printer Enumerator
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nsPrinterEnumeratorGTK::nsPrinterEnumeratorGTK()
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{
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}
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NS_IMPL_ISUPPORTS(nsPrinterEnumeratorGTK, nsIPrinterEnumerator)
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NS_IMETHODIMP nsPrinterEnumeratorGTK::GetPrinterNameList(nsIStringEnumerator **aPrinterNameList)
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{
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NS_ENSURE_ARG_POINTER(aPrinterNameList);
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*aPrinterNameList = nullptr;
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nsresult rv = GlobalPrinters::GetInstance()->InitializeGlobalPrinters();
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if (NS_FAILED(rv)) {
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return rv;
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}
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uint32_t numPrinters = GlobalPrinters::GetInstance()->GetNumPrinters();
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nsTArray<nsString> *printers = new nsTArray<nsString>(numPrinters);
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if (!printers) {
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GlobalPrinters::GetInstance()->FreeGlobalPrinters();
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return NS_ERROR_OUT_OF_MEMORY;
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}
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uint32_t count = 0;
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while( count < numPrinters )
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{
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printers->AppendElement(*GlobalPrinters::GetInstance()->GetStringAt(count++));
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}
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GlobalPrinters::GetInstance()->FreeGlobalPrinters();
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return NS_NewAdoptingStringEnumerator(aPrinterNameList, printers);
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}
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NS_IMETHODIMP nsPrinterEnumeratorGTK::GetDefaultPrinterName(char16_t **aDefaultPrinterName)
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{
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DO_PR_DEBUG_LOG(("nsPrinterEnumeratorGTK::GetDefaultPrinterName()\n"));
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NS_ENSURE_ARG_POINTER(aDefaultPrinterName);
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GlobalPrinters::GetInstance()->GetDefaultPrinterName(aDefaultPrinterName);
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DO_PR_DEBUG_LOG(("GetDefaultPrinterName(): default printer='%s'.\n", NS_ConvertUTF16toUTF8(*aDefaultPrinterName).get()));
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return NS_OK;
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}
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NS_IMETHODIMP nsPrinterEnumeratorGTK::InitPrintSettingsFromPrinter(const char16_t *aPrinterName, nsIPrintSettings *aPrintSettings)
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{
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DO_PR_DEBUG_LOG(("nsPrinterEnumeratorGTK::InitPrintSettingsFromPrinter()"));
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NS_ENSURE_ARG_POINTER(aPrintSettings);
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/* Set filename */
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nsAutoCString filename;
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const char *path;
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if (!(path = PR_GetEnv("PWD")))
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path = PR_GetEnv("HOME");
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if (path)
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filename = nsPrintfCString("%s/mozilla.pdf", path);
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else
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filename.AssignLiteral("mozilla.pdf");
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DO_PR_DEBUG_LOG(("Setting default filename to '%s'\n", filename.get()));
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aPrintSettings->SetToFileName(NS_ConvertUTF8toUTF16(filename).get());
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aPrintSettings->SetIsInitializedFromPrinter(true);
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return NS_OK;
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}
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//----------------------------------------------------------------------
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nsresult GlobalPrinters::InitializeGlobalPrinters ()
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{
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if (PrintersAreAllocated()) {
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return NS_OK;
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}
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mGlobalPrinterList = new nsTArray<nsString>();
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nsPSPrinterList psMgr;
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if (psMgr.Enabled()) {
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/* Get the list of PostScript-module printers */
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// XXX: this function is the only user of GetPrinterList
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// So it may be interesting to convert the nsCStrings
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// in this function, we would save one loop here
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nsTArray<nsCString> printerList;
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psMgr.GetPrinterList(printerList);
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for (uint32_t i = 0; i < printerList.Length(); i++)
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{
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mGlobalPrinterList->AppendElement(NS_ConvertUTF8toUTF16(printerList[i]));
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}
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}
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/* If there are no printers available after all checks, return an error */
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if (!mGlobalPrinterList->Length())
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{
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/* Make sure we do not cache an empty printer list */
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FreeGlobalPrinters();
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return NS_ERROR_GFX_PRINTER_NO_PRINTER_AVAILABLE;
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}
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return NS_OK;
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}
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//----------------------------------------------------------------------
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void GlobalPrinters::FreeGlobalPrinters()
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{
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if (mGlobalPrinterList) {
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delete mGlobalPrinterList;
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mGlobalPrinterList = nullptr;
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}
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}
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void
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GlobalPrinters::GetDefaultPrinterName(char16_t **aDefaultPrinterName)
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{
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*aDefaultPrinterName = nullptr;
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bool allocate = !GlobalPrinters::GetInstance()->PrintersAreAllocated();
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if (allocate) {
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nsresult rv = GlobalPrinters::GetInstance()->InitializeGlobalPrinters();
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if (NS_FAILED(rv)) {
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return;
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}
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}
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NS_ASSERTION(GlobalPrinters::GetInstance()->PrintersAreAllocated(), "no GlobalPrinters");
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if (GlobalPrinters::GetInstance()->GetNumPrinters() == 0)
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return;
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*aDefaultPrinterName = ToNewUnicode(*GlobalPrinters::GetInstance()->GetStringAt(0));
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if (allocate) {
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GlobalPrinters::GetInstance()->FreeGlobalPrinters();
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}
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}
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