Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 677 insertions, 0 deletions

diff --git a/widget/gtk/nsPrintSettingsGTK.cpp b/widget/gtk/nsPrintSettingsGTK.cpp
new file mode 100644
index 0000000000..6ca66a0fcf
--- /dev/null
+++ b/widget/gtk/nsPrintSettingsGTK.cpp
@@ -0,0 +1,677 @@
+/* -*- 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 "nsPrintSettingsGTK.h"
+#include "nsIFile.h"
+#include "nsNetUtil.h"
+#include <stdlib.h>
+#include <algorithm>
+
+// These constants are the the strings that GTK expects as key-value pairs for
+// setting CUPS duplex modes. These are not universal to all CUPS systems, which
+// is why they are local to this file.
+static constexpr gchar kCupsDuplex[] = "cups-Duplex";
+static constexpr gchar kCupsDuplexNone[] = "None";
+static constexpr gchar kCupsDuplexNoTumble[] = "DuplexNoTumble";
+static constexpr gchar kCupsDuplexTumble[] = "DuplexTumble";
+
+static GtkPaperSize* moz_gtk_paper_size_copy_to_new_custom(
+    GtkPaperSize* oldPaperSize) {
+  // We make a "custom-ified" copy of the paper size so it can be changed later.
+  return gtk_paper_size_new_custom(
+      gtk_paper_size_get_name(oldPaperSize),
+      gtk_paper_size_get_display_name(oldPaperSize),
+      gtk_paper_size_get_width(oldPaperSize, GTK_UNIT_INCH),
+      gtk_paper_size_get_height(oldPaperSize, GTK_UNIT_INCH), GTK_UNIT_INCH);
+}
+
+NS_IMPL_ISUPPORTS_INHERITED(nsPrintSettingsGTK, nsPrintSettings,
+                            nsPrintSettingsGTK)
+
+/** ---------------------------------------------------
+ */
+nsPrintSettingsGTK::nsPrintSettingsGTK()
+    : mPageSetup(nullptr), mPrintSettings(nullptr), mGTKPrinter(nullptr) {
+  // The aim here is to set up the objects enough that silent printing works
+  // well. These will be replaced anyway if the print dialog is used.
+  mPrintSettings = gtk_print_settings_new();
+  GtkPageSetup* pageSetup = gtk_page_setup_new();
+  SetGtkPageSetup(pageSetup);
+  g_object_unref(pageSetup);
+
+  SetOutputFormat(nsIPrintSettings::kOutputFormatNative);
+}
+
+already_AddRefed<nsIPrintSettings> CreatePlatformPrintSettings(
+    const mozilla::PrintSettingsInitializer& aSettings) {
+  RefPtr<nsPrintSettings> settings = new nsPrintSettingsGTK();
+  settings->InitWithInitializer(aSettings);
+  settings->SetDefaultFileName();
+  return settings.forget();
+}
+
+/** ---------------------------------------------------
+ */
+nsPrintSettingsGTK::~nsPrintSettingsGTK() {
+  if (mPageSetup) {
+    g_object_unref(mPageSetup);
+    mPageSetup = nullptr;
+  }
+  if (mPrintSettings) {
+    g_object_unref(mPrintSettings);
+    mPrintSettings = nullptr;
+  }
+  if (mGTKPrinter) {
+    g_object_unref(mGTKPrinter);
+    mGTKPrinter = nullptr;
+  }
+}
+
+/** ---------------------------------------------------
+ */
+nsPrintSettingsGTK::nsPrintSettingsGTK(const nsPrintSettingsGTK& aPS)
+    : mPageSetup(nullptr), mPrintSettings(nullptr), mGTKPrinter(nullptr) {
+  *this = aPS;
+}
+
+/** ---------------------------------------------------
+ */
+nsPrintSettingsGTK& nsPrintSettingsGTK::operator=(
+    const nsPrintSettingsGTK& rhs) {
+  if (this == &rhs) {
+    return *this;
+  }
+
+  nsPrintSettings::operator=(rhs);
+
+  if (mPageSetup) g_object_unref(mPageSetup);
+  mPageSetup = gtk_page_setup_copy(rhs.mPageSetup);
+  // NOTE: No need to re-initialize mUnwriteableMargin here (even
+  // though mPageSetup is changing). It'll be copied correctly by
+  // nsPrintSettings::operator=.
+
+  if (mPrintSettings) g_object_unref(mPrintSettings);
+  mPrintSettings = gtk_print_settings_copy(rhs.mPrintSettings);
+
+  if (mGTKPrinter) g_object_unref(mGTKPrinter);
+  mGTKPrinter = (GtkPrinter*)g_object_ref(rhs.mGTKPrinter);
+
+  return *this;
+}
+
+/** -------------------------------------------
+ */
+nsresult nsPrintSettingsGTK::_Clone(nsIPrintSettings** _retval) {
+  NS_ENSURE_ARG_POINTER(_retval);
+  *_retval = nullptr;
+
+  nsPrintSettingsGTK* newSettings = new nsPrintSettingsGTK(*this);
+  if (!newSettings) return NS_ERROR_FAILURE;
+  *_retval = newSettings;
+  NS_ADDREF(*_retval);
+  return NS_OK;
+}
+
+/** -------------------------------------------
+ */
+NS_IMETHODIMP
+nsPrintSettingsGTK::_Assign(nsIPrintSettings* aPS) {
+  nsPrintSettingsGTK* printSettingsGTK = static_cast<nsPrintSettingsGTK*>(aPS);
+  if (!printSettingsGTK) return NS_ERROR_UNEXPECTED;
+  *this = *printSettingsGTK;
+  return NS_OK;
+}
+
+/** ---------------------------------------------------
+ */
+void nsPrintSettingsGTK::SetGtkPageSetup(GtkPageSetup* aPageSetup) {
+  if (mPageSetup) g_object_unref(mPageSetup);
+
+  mPageSetup = (GtkPageSetup*)g_object_ref(aPageSetup);
+  InitUnwriteableMargin();
+
+  // If the paper size is not custom, then we make a custom copy of the
+  // GtkPaperSize, so it can be mutable. If a GtkPaperSize wasn't made as
+  // custom, its properties are immutable.
+  GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(aPageSetup);
+  if (!gtk_paper_size_is_custom(paperSize)) {
+    GtkPaperSize* customPaperSize =
+        moz_gtk_paper_size_copy_to_new_custom(paperSize);
+    gtk_page_setup_set_paper_size(mPageSetup, customPaperSize);
+    gtk_paper_size_free(customPaperSize);
+  }
+  SaveNewPageSize();
+}
+
+/** ---------------------------------------------------
+ */
+void nsPrintSettingsGTK::SetGtkPrintSettings(GtkPrintSettings* aPrintSettings) {
+  if (mPrintSettings) g_object_unref(mPrintSettings);
+
+  mPrintSettings = (GtkPrintSettings*)g_object_ref(aPrintSettings);
+
+  GtkPaperSize* paperSize = gtk_print_settings_get_paper_size(aPrintSettings);
+  if (paperSize) {
+    GtkPaperSize* customPaperSize =
+        moz_gtk_paper_size_copy_to_new_custom(paperSize);
+    gtk_paper_size_free(paperSize);
+    gtk_page_setup_set_paper_size(mPageSetup, customPaperSize);
+    gtk_paper_size_free(customPaperSize);
+  } else {
+    // paperSize was null, and so we add the paper size in the GtkPageSetup to
+    // the settings.
+    SaveNewPageSize();
+  }
+}
+
+/** ---------------------------------------------------
+ */
+void nsPrintSettingsGTK::SetGtkPrinter(GtkPrinter* aPrinter) {
+  if (mGTKPrinter) g_object_unref(mGTKPrinter);
+
+  mGTKPrinter = (GtkPrinter*)g_object_ref(aPrinter);
+}
+
+NS_IMETHODIMP nsPrintSettingsGTK::GetOutputFormat(int16_t* aOutputFormat) {
+  NS_ENSURE_ARG_POINTER(aOutputFormat);
+
+  int16_t format;
+  nsresult rv = nsPrintSettings::GetOutputFormat(&format);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  if (format == nsIPrintSettings::kOutputFormatNative &&
+      GTK_IS_PRINTER(mGTKPrinter)) {
+    format = nsIPrintSettings::kOutputFormatPDF;
+  }
+
+  *aOutputFormat = format;
+  return NS_OK;
+}
+
+/**
+ * Reimplementation of nsPrintSettings functions so that we get the values
+ * from the GTK objects rather than our own variables.
+ */
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetPageRanges(const nsTArray<int32_t>& aRanges) {
+  if (aRanges.Length() % 2 != 0) {
+    return NS_ERROR_FAILURE;
+  }
+
+  gtk_print_settings_set_print_pages(
+      mPrintSettings,
+      aRanges.IsEmpty() ? GTK_PRINT_PAGES_ALL : GTK_PRINT_PAGES_RANGES);
+
+  nsTArray<GtkPageRange> ranges;
+  ranges.SetCapacity(aRanges.Length() / 2);
+  for (size_t i = 0; i < aRanges.Length(); i += 2) {
+    GtkPageRange* gtkRange = ranges.AppendElement();
+    gtkRange->start = aRanges[i] - 1;
+    gtkRange->end = aRanges[i + 1] - 1;
+  }
+
+  gtk_print_settings_set_page_ranges(mPrintSettings, ranges.Elements(),
+                                     ranges.Length());
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetPrintReversed(bool* aPrintReversed) {
+  *aPrintReversed = gtk_print_settings_get_reverse(mPrintSettings);
+  return NS_OK;
+}
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetPrintReversed(bool aPrintReversed) {
+  gtk_print_settings_set_reverse(mPrintSettings, aPrintReversed);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetPrintInColor(bool* aPrintInColor) {
+  *aPrintInColor = gtk_print_settings_get_use_color(mPrintSettings);
+  return NS_OK;
+}
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetPrintInColor(bool aPrintInColor) {
+  gtk_print_settings_set_use_color(mPrintSettings, aPrintInColor);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetOrientation(int32_t* aOrientation) {
+  NS_ENSURE_ARG_POINTER(aOrientation);
+
+  GtkPageOrientation gtkOrient = gtk_page_setup_get_orientation(mPageSetup);
+  switch (gtkOrient) {
+    case GTK_PAGE_ORIENTATION_LANDSCAPE:
+    case GTK_PAGE_ORIENTATION_REVERSE_LANDSCAPE:
+      *aOrientation = kLandscapeOrientation;
+      break;
+
+    case GTK_PAGE_ORIENTATION_PORTRAIT:
+    case GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT:
+    default:
+      *aOrientation = kPortraitOrientation;
+  }
+  return NS_OK;
+}
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetOrientation(int32_t aOrientation) {
+  GtkPageOrientation gtkOrient;
+  if (aOrientation == kLandscapeOrientation)
+    gtkOrient = GTK_PAGE_ORIENTATION_LANDSCAPE;
+  else
+    gtkOrient = GTK_PAGE_ORIENTATION_PORTRAIT;
+
+  gtk_print_settings_set_orientation(mPrintSettings, gtkOrient);
+  gtk_page_setup_set_orientation(mPageSetup, gtkOrient);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetToFileName(nsAString& aToFileName) {
+  // Get the gtk output filename
+  const char* gtk_output_uri =
+      gtk_print_settings_get(mPrintSettings, GTK_PRINT_SETTINGS_OUTPUT_URI);
+  if (!gtk_output_uri) {
+    aToFileName = mToFileName;
+    return NS_OK;
+  }
+
+  // Convert to an nsIFile
+  nsCOMPtr<nsIFile> file;
+  nsresult rv = NS_GetFileFromURLSpec(nsDependentCString(gtk_output_uri),
+                                      getter_AddRefs(file));
+  if (NS_FAILED(rv)) return rv;
+
+  // Extract the path
+  return file->GetPath(aToFileName);
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetToFileName(const nsAString& aToFileName) {
+  if (aToFileName.IsEmpty()) {
+    mToFileName.SetLength(0);
+    gtk_print_settings_set(mPrintSettings, GTK_PRINT_SETTINGS_OUTPUT_URI,
+                           nullptr);
+    return NS_OK;
+  }
+
+  gtk_print_settings_set(mPrintSettings, GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT,
+                         "pdf");
+
+  nsCOMPtr<nsIFile> file;
+  nsresult rv = NS_NewLocalFile(aToFileName, true, getter_AddRefs(file));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Convert the nsIFile to a URL
+  nsAutoCString url;
+  rv = NS_GetURLSpecFromFile(file, url);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  gtk_print_settings_set(mPrintSettings, GTK_PRINT_SETTINGS_OUTPUT_URI,
+                         url.get());
+  mToFileName = aToFileName;
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetPrinterName(nsAString& aPrinter) {
+  const char* gtkPrintName = gtk_print_settings_get_printer(mPrintSettings);
+  if (!gtkPrintName) {
+    if (GTK_IS_PRINTER(mGTKPrinter)) {
+      gtkPrintName = gtk_printer_get_name(mGTKPrinter);
+    } else {
+      // This mimics what nsPrintSettingsImpl does when we try to Get before we
+      // Set
+      aPrinter.Truncate();
+      return NS_OK;
+    }
+  }
+  CopyUTF8toUTF16(mozilla::MakeStringSpan(gtkPrintName), aPrinter);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetPrinterName(const nsAString& aPrinter) {
+  NS_ConvertUTF16toUTF8 gtkPrinter(aPrinter);
+
+  if (StringBeginsWith(gtkPrinter, "CUPS/"_ns)) {
+    // Strip off "CUPS/"; GTK might recognize the rest
+    gtkPrinter.Cut(0, strlen("CUPS/"));
+  }
+
+  // Give mPrintSettings the passed-in printer name if either...
+  // - it has no printer name stored yet
+  // - it has an existing printer name that's different from
+  //   the name passed to this function.
+  const char* oldPrinterName = gtk_print_settings_get_printer(mPrintSettings);
+  if (!oldPrinterName || !gtkPrinter.Equals(oldPrinterName)) {
+    mIsInitedFromPrinter = false;
+    mIsInitedFromPrefs = false;
+    gtk_print_settings_set_printer(mPrintSettings, gtkPrinter.get());
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetNumCopies(int32_t* aNumCopies) {
+  NS_ENSURE_ARG_POINTER(aNumCopies);
+  *aNumCopies = gtk_print_settings_get_n_copies(mPrintSettings);
+  return NS_OK;
+}
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetNumCopies(int32_t aNumCopies) {
+  gtk_print_settings_set_n_copies(mPrintSettings, aNumCopies);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetScaling(double* aScaling) {
+  *aScaling = gtk_print_settings_get_scale(mPrintSettings) / 100.0;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetScaling(double aScaling) {
+  gtk_print_settings_set_scale(mPrintSettings, aScaling * 100.0);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetPaperId(nsAString& aPaperId) {
+  const gchar* name =
+      gtk_paper_size_get_name(gtk_page_setup_get_paper_size(mPageSetup));
+  CopyUTF8toUTF16(mozilla::MakeStringSpan(name), aPaperId);
+  return NS_OK;
+}
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetPaperId(const nsAString& aPaperId) {
+  NS_ConvertUTF16toUTF8 gtkPaperName(aPaperId);
+
+  // Convert these Gecko names to GTK names
+  // XXX (jfkthame): is this still relevant?
+  if (gtkPaperName.EqualsIgnoreCase("letter"))
+    gtkPaperName.AssignLiteral(GTK_PAPER_NAME_LETTER);
+  else if (gtkPaperName.EqualsIgnoreCase("legal"))
+    gtkPaperName.AssignLiteral(GTK_PAPER_NAME_LEGAL);
+
+  GtkPaperSize* oldPaperSize = gtk_page_setup_get_paper_size(mPageSetup);
+  gdouble width = gtk_paper_size_get_width(oldPaperSize, GTK_UNIT_INCH);
+  gdouble height = gtk_paper_size_get_height(oldPaperSize, GTK_UNIT_INCH);
+
+  // Try to get the display name from the name so our paper size fits in the
+  // Page Setup dialog.
+  GtkPaperSize* paperSize = gtk_paper_size_new(gtkPaperName.get());
+  GtkPaperSize* customPaperSize = gtk_paper_size_new_custom(
+      gtkPaperName.get(), gtk_paper_size_get_display_name(paperSize), width,
+      height, GTK_UNIT_INCH);
+  gtk_paper_size_free(paperSize);
+
+  gtk_page_setup_set_paper_size(mPageSetup, customPaperSize);
+  gtk_paper_size_free(customPaperSize);
+  SaveNewPageSize();
+  return NS_OK;
+}
+
+GtkUnit nsPrintSettingsGTK::GetGTKUnit(int16_t aGeckoUnit) {
+  if (aGeckoUnit == kPaperSizeMillimeters)
+    return GTK_UNIT_MM;
+  else
+    return GTK_UNIT_INCH;
+}
+
+void nsPrintSettingsGTK::SaveNewPageSize() {
+  gtk_print_settings_set_paper_size(mPrintSettings,
+                                    gtk_page_setup_get_paper_size(mPageSetup));
+}
+
+void nsPrintSettingsGTK::InitUnwriteableMargin() {
+  mUnwriteableMargin.SizeTo(
+      NS_INCHES_TO_INT_TWIPS(
+          gtk_page_setup_get_top_margin(mPageSetup, GTK_UNIT_INCH)),
+      NS_INCHES_TO_INT_TWIPS(
+          gtk_page_setup_get_right_margin(mPageSetup, GTK_UNIT_INCH)),
+      NS_INCHES_TO_INT_TWIPS(
+          gtk_page_setup_get_bottom_margin(mPageSetup, GTK_UNIT_INCH)),
+      NS_INCHES_TO_INT_TWIPS(
+          gtk_page_setup_get_left_margin(mPageSetup, GTK_UNIT_INCH)));
+}
+
+/**
+ * NOTE: Need a custom set of SetUnwriteableMargin functions, because
+ * whenever we change mUnwriteableMargin, we must pass the change
+ * down to our GTKPageSetup object.  (This is needed in order for us
+ * to give the correct default values in nsPrintDialogGTK.)
+ *
+ * It's important that the following functions pass
+ * mUnwriteableMargin values rather than aUnwriteableMargin values
+ * to gtk_page_setup_set_[blank]_margin, because the two may not be
+ * the same.  (Specifically, negative values of aUnwriteableMargin
+ * are ignored by the nsPrintSettings::SetUnwriteableMargin functions.)
+ */
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetUnwriteableMarginInTwips(
+    nsIntMargin& aUnwriteableMargin) {
+  nsPrintSettings::SetUnwriteableMarginInTwips(aUnwriteableMargin);
+  gtk_page_setup_set_top_margin(
+      mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.top), GTK_UNIT_INCH);
+  gtk_page_setup_set_left_margin(
+      mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.left), GTK_UNIT_INCH);
+  gtk_page_setup_set_bottom_margin(
+      mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.bottom), GTK_UNIT_INCH);
+  gtk_page_setup_set_right_margin(
+      mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.right), GTK_UNIT_INCH);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetUnwriteableMarginTop(double aUnwriteableMarginTop) {
+  nsPrintSettings::SetUnwriteableMarginTop(aUnwriteableMarginTop);
+  gtk_page_setup_set_top_margin(
+      mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.top), GTK_UNIT_INCH);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetUnwriteableMarginLeft(double aUnwriteableMarginLeft) {
+  nsPrintSettings::SetUnwriteableMarginLeft(aUnwriteableMarginLeft);
+  gtk_page_setup_set_left_margin(
+      mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.left), GTK_UNIT_INCH);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetUnwriteableMarginBottom(
+    double aUnwriteableMarginBottom) {
+  nsPrintSettings::SetUnwriteableMarginBottom(aUnwriteableMarginBottom);
+  gtk_page_setup_set_bottom_margin(
+      mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.bottom), GTK_UNIT_INCH);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetUnwriteableMarginRight(double aUnwriteableMarginRight) {
+  nsPrintSettings::SetUnwriteableMarginRight(aUnwriteableMarginRight);
+  gtk_page_setup_set_right_margin(
+      mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.right), GTK_UNIT_INCH);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetPaperWidth(double* aPaperWidth) {
+  NS_ENSURE_ARG_POINTER(aPaperWidth);
+  GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
+  *aPaperWidth =
+      gtk_paper_size_get_width(paperSize, GetGTKUnit(mPaperSizeUnit));
+  return NS_OK;
+}
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetPaperWidth(double aPaperWidth) {
+  GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
+  gtk_paper_size_set_size(
+      paperSize, aPaperWidth,
+      gtk_paper_size_get_height(paperSize, GetGTKUnit(mPaperSizeUnit)),
+      GetGTKUnit(mPaperSizeUnit));
+  SaveNewPageSize();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetPaperHeight(double* aPaperHeight) {
+  NS_ENSURE_ARG_POINTER(aPaperHeight);
+  GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
+  *aPaperHeight =
+      gtk_paper_size_get_height(paperSize, GetGTKUnit(mPaperSizeUnit));
+  return NS_OK;
+}
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetPaperHeight(double aPaperHeight) {
+  GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
+  gtk_paper_size_set_size(
+      paperSize,
+      gtk_paper_size_get_width(paperSize, GetGTKUnit(mPaperSizeUnit)),
+      aPaperHeight, GetGTKUnit(mPaperSizeUnit));
+  SaveNewPageSize();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetPaperSizeUnit(int16_t aPaperSizeUnit) {
+  // Convert units internally. e.g. they might have set the values while we're
+  // still in mm but they change to inch just afterwards, expecting that their
+  // sizes are in inches.
+  GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
+  gtk_paper_size_set_size(
+      paperSize,
+      gtk_paper_size_get_width(paperSize, GetGTKUnit(mPaperSizeUnit)),
+      gtk_paper_size_get_height(paperSize, GetGTKUnit(mPaperSizeUnit)),
+      GetGTKUnit(aPaperSizeUnit));
+  SaveNewPageSize();
+
+  mPaperSizeUnit = aPaperSizeUnit;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetEffectivePageSize(double* aWidth, double* aHeight) {
+  GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
+  if (mPaperSizeUnit == kPaperSizeInches) {
+    *aWidth =
+        NS_INCHES_TO_TWIPS(gtk_paper_size_get_width(paperSize, GTK_UNIT_INCH));
+    *aHeight =
+        NS_INCHES_TO_TWIPS(gtk_paper_size_get_height(paperSize, GTK_UNIT_INCH));
+  } else {
+    MOZ_ASSERT(mPaperSizeUnit == kPaperSizeMillimeters,
+               "unexpected paper size unit");
+    *aWidth = NS_MILLIMETERS_TO_TWIPS(
+        gtk_paper_size_get_width(paperSize, GTK_UNIT_MM));
+    *aHeight = NS_MILLIMETERS_TO_TWIPS(
+        gtk_paper_size_get_height(paperSize, GTK_UNIT_MM));
+  }
+  GtkPageOrientation gtkOrient = gtk_page_setup_get_orientation(mPageSetup);
+
+  if (gtkOrient == GTK_PAGE_ORIENTATION_LANDSCAPE ||
+      gtkOrient == GTK_PAGE_ORIENTATION_REVERSE_LANDSCAPE) {
+    double temp = *aWidth;
+    *aWidth = *aHeight;
+    *aHeight = temp;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetPageRanges(nsTArray<int32_t>& aPages) {
+  GtkPrintPages gtkRange = gtk_print_settings_get_print_pages(mPrintSettings);
+  if (gtkRange != GTK_PRINT_PAGES_RANGES) {
+    aPages.Clear();
+    return NS_OK;
+  }
+
+  gint ctRanges;
+  GtkPageRange* lstRanges =
+      gtk_print_settings_get_page_ranges(mPrintSettings, &ctRanges);
+
+  aPages.Clear();
+
+  for (gint i = 0; i < ctRanges; i++) {
+    aPages.AppendElement(lstRanges[i].start + 1);
+    aPages.AppendElement(lstRanges[i].end + 1);
+  }
+
+  g_free(lstRanges);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetResolution(int32_t* aResolution) {
+  *aResolution = gtk_print_settings_get_resolution(mPrintSettings);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetResolution(int32_t aResolution) {
+  gtk_print_settings_set_resolution(mPrintSettings, aResolution);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::GetDuplex(int32_t* aDuplex) {
+  NS_ENSURE_ARG_POINTER(aDuplex);
+
+  // Default to DuplexNone.
+  *aDuplex = kDuplexNone;
+
+  if (!gtk_print_settings_has_key(mPrintSettings, GTK_PRINT_SETTINGS_DUPLEX)) {
+    return NS_OK;
+  }
+
+  switch (gtk_print_settings_get_duplex(mPrintSettings)) {
+    case GTK_PRINT_DUPLEX_SIMPLEX:
+      *aDuplex = kDuplexNone;
+      break;
+    case GTK_PRINT_DUPLEX_HORIZONTAL:
+      *aDuplex = kDuplexFlipOnLongEdge;
+      break;
+    case GTK_PRINT_DUPLEX_VERTICAL:
+      *aDuplex = kDuplexFlipOnShortEdge;
+      break;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPrintSettingsGTK::SetDuplex(int32_t aDuplex) {
+  uint32_t duplex = static_cast<uint32_t>(aDuplex);
+  MOZ_ASSERT(duplex <= kDuplexFlipOnShortEdge,
+             "value is out of bounds for duplex enum");
+
+  // We want to set the GTK CUPS Duplex setting in addition to calling
+  // gtk_print_settings_set_duplex(). Some systems may look for one, or the
+  // other, so it is best to set them both consistently.
+  switch (duplex) {
+    case kDuplexNone:
+      gtk_print_settings_set(mPrintSettings, kCupsDuplex, kCupsDuplexNone);
+      gtk_print_settings_set_duplex(mPrintSettings, GTK_PRINT_DUPLEX_SIMPLEX);
+      break;
+    case kDuplexFlipOnLongEdge:
+      gtk_print_settings_set(mPrintSettings, kCupsDuplex, kCupsDuplexNoTumble);
+      gtk_print_settings_set_duplex(mPrintSettings,
+                                    GTK_PRINT_DUPLEX_HORIZONTAL);
+      break;
+    case kDuplexFlipOnShortEdge:
+      gtk_print_settings_set(mPrintSettings, kCupsDuplex, kCupsDuplexTumble);
+      gtk_print_settings_set_duplex(mPrintSettings, GTK_PRINT_DUPLEX_VERTICAL);
+      break;
+  }
+
+  return NS_OK;
+}