widget/gtk/nsPrintSettingsGTK.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "nsPrintSettingsGTK.h"
   7 #include "nsIFile.h"
   8 #include "nsNetUtil.h"
   9 #include <stdlib.h>
  10 #include <algorithm>
  11
  12 // These constants are the the strings that GTK expects as key-value pairs for
  13 // setting CUPS duplex modes. These are not universal to all CUPS systems, which
  14 // is why they are local to this file.
  15 static constexpr gchar kCupsDuplex[] = "cups-Duplex";
  16 static constexpr gchar kCupsDuplexNone[] = "None";
  17 static constexpr gchar kCupsDuplexNoTumble[] = "DuplexNoTumble";
  18 static constexpr gchar kCupsDuplexTumble[] = "DuplexTumble";
  19
  20 static GtkPaperSize* moz_gtk_paper_size_copy_to_new_custom(
  21     GtkPaperSize* oldPaperSize) {
  22   // We make a "custom-ified" copy of the paper size so it can be changed later.
  23   return gtk_paper_size_new_custom(
  24       gtk_paper_size_get_name(oldPaperSize),
  25       gtk_paper_size_get_display_name(oldPaperSize),
  26       gtk_paper_size_get_width(oldPaperSize, GTK_UNIT_INCH),
  27       gtk_paper_size_get_height(oldPaperSize, GTK_UNIT_INCH), GTK_UNIT_INCH);
  28 }
  29
  30 NS_IMPL_ISUPPORTS_INHERITED(nsPrintSettingsGTK, nsPrintSettings,
  31                             nsPrintSettingsGTK)
  32
  33 /** ---------------------------------------------------
  34  */
  35 nsPrintSettingsGTK::nsPrintSettingsGTK()
  36     : mPageSetup(nullptr), mPrintSettings(nullptr), mGTKPrinter(nullptr) {
  37   // The aim here is to set up the objects enough that silent printing works
  38   // well. These will be replaced anyway if the print dialog is used.
  39   mPrintSettings = gtk_print_settings_new();
  40   GtkPageSetup* pageSetup = gtk_page_setup_new();
  41   SetGtkPageSetup(pageSetup);
  42   g_object_unref(pageSetup);
  43
  44   SetOutputFormat(nsIPrintSettings::kOutputFormatNative);
  45 }
  46
  47 already_AddRefed<nsIPrintSettings> CreatePlatformPrintSettings(
  48     const mozilla::PrintSettingsInitializer& aSettings) {
  49   RefPtr<nsPrintSettings> settings = new nsPrintSettingsGTK();
  50   settings->InitWithInitializer(aSettings);
  51   settings->SetDefaultFileName();
  52   return settings.forget();
  53 }
  54
  55 /** ---------------------------------------------------
  56  */
  57 nsPrintSettingsGTK::~nsPrintSettingsGTK() {
  58   if (mPageSetup) {
  59     g_object_unref(mPageSetup);
  60     mPageSetup = nullptr;
  61   }
  62   if (mPrintSettings) {
  63     g_object_unref(mPrintSettings);
  64     mPrintSettings = nullptr;
  65   }
  66   if (mGTKPrinter) {
  67     g_object_unref(mGTKPrinter);
  68     mGTKPrinter = nullptr;
  69   }
  70 }
  71
  72 /** ---------------------------------------------------
  73  */
  74 nsPrintSettingsGTK::nsPrintSettingsGTK(const nsPrintSettingsGTK& aPS)
  75     : mPageSetup(nullptr), mPrintSettings(nullptr), mGTKPrinter(nullptr) {
  76   *this = aPS;
  77 }
  78
  79 /** ---------------------------------------------------
  80  */
  81 nsPrintSettingsGTK& nsPrintSettingsGTK::operator=(
  82     const nsPrintSettingsGTK& rhs) {
  83   if (this == &rhs) {
  84     return *this;
  85   }
  86
  87   nsPrintSettings::operator=(rhs);
  88
  89   if (mPageSetup) g_object_unref(mPageSetup);
  90   mPageSetup = gtk_page_setup_copy(rhs.mPageSetup);
  91   // NOTE: No need to re-initialize mUnwriteableMargin here (even
  92   // though mPageSetup is changing). It'll be copied correctly by
  93   // nsPrintSettings::operator=.
  94
  95   if (mPrintSettings) g_object_unref(mPrintSettings);
  96   mPrintSettings = gtk_print_settings_copy(rhs.mPrintSettings);
  97
  98   if (mGTKPrinter) g_object_unref(mGTKPrinter);
  99
 100   if (rhs.mGTKPrinter) {
 101     g_object_ref(rhs.mGTKPrinter);
 102   }
 103   mGTKPrinter = rhs.mGTKPrinter;
 104
 105   return *this;
 106 }
 107
 108 /** -------------------------------------------
 109  */
 110 nsresult nsPrintSettingsGTK::_Clone(nsIPrintSettings** _retval) {
 111   NS_ENSURE_ARG_POINTER(_retval);
 112   *_retval = nullptr;
 113
 114   nsPrintSettingsGTK* newSettings = new nsPrintSettingsGTK(*this);
 115   if (!newSettings) return NS_ERROR_FAILURE;
 116   *_retval = newSettings;
 117   NS_ADDREF(*_retval);
 118   return NS_OK;
 119 }
 120
 121 /** -------------------------------------------
 122  */
 123 NS_IMETHODIMP
 124 nsPrintSettingsGTK::_Assign(nsIPrintSettings* aPS) {
 125   nsPrintSettingsGTK* printSettingsGTK = static_cast<nsPrintSettingsGTK*>(aPS);
 126   if (!printSettingsGTK) return NS_ERROR_UNEXPECTED;
 127   *this = *printSettingsGTK;
 128   return NS_OK;
 129 }
 130
 131 /** ---------------------------------------------------
 132  */
 133 void nsPrintSettingsGTK::SetGtkPageSetup(GtkPageSetup* aPageSetup) {
 134   if (mPageSetup) g_object_unref(mPageSetup);
 135
 136   mPageSetup = (GtkPageSetup*)g_object_ref(aPageSetup);
 137   InitUnwriteableMargin();
 138
 139   // If the paper size is not custom, then we make a custom copy of the
 140   // GtkPaperSize, so it can be mutable. If a GtkPaperSize wasn't made as
 141   // custom, its properties are immutable.
 142   GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(aPageSetup);
 143   if (!gtk_paper_size_is_custom(paperSize)) {
 144     GtkPaperSize* customPaperSize =
 145         moz_gtk_paper_size_copy_to_new_custom(paperSize);
 146     gtk_page_setup_set_paper_size(mPageSetup, customPaperSize);
 147     gtk_paper_size_free(customPaperSize);
 148   }
 149   SaveNewPageSize();
 150 }
 151
 152 /** ---------------------------------------------------
 153  */
 154 void nsPrintSettingsGTK::SetGtkPrintSettings(GtkPrintSettings* aPrintSettings) {
 155   if (mPrintSettings) g_object_unref(mPrintSettings);
 156
 157   mPrintSettings = (GtkPrintSettings*)g_object_ref(aPrintSettings);
 158
 159   GtkPaperSize* paperSize = gtk_print_settings_get_paper_size(aPrintSettings);
 160   if (paperSize) {
 161     GtkPaperSize* customPaperSize =
 162         moz_gtk_paper_size_copy_to_new_custom(paperSize);
 163     gtk_paper_size_free(paperSize);
 164     gtk_page_setup_set_paper_size(mPageSetup, customPaperSize);
 165     gtk_paper_size_free(customPaperSize);
 166   } else {
 167     // paperSize was null, and so we add the paper size in the GtkPageSetup to
 168     // the settings.
 169     SaveNewPageSize();
 170   }
 171 }
 172
 173 /** ---------------------------------------------------
 174  */
 175 void nsPrintSettingsGTK::SetGtkPrinter(GtkPrinter* aPrinter) {
 176   if (mGTKPrinter) g_object_unref(mGTKPrinter);
 177
 178   mGTKPrinter = (GtkPrinter*)g_object_ref(aPrinter);
 179 }
 180
 181 NS_IMETHODIMP nsPrintSettingsGTK::GetOutputFormat(int16_t* aOutputFormat) {
 182   NS_ENSURE_ARG_POINTER(aOutputFormat);
 183
 184   int16_t format;
 185   nsresult rv = nsPrintSettings::GetOutputFormat(&format);
 186   if (NS_FAILED(rv)) {
 187     return rv;
 188   }
 189
 190   if (format == nsIPrintSettings::kOutputFormatNative &&
 191       GTK_IS_PRINTER(mGTKPrinter)) {
 192     format = nsIPrintSettings::kOutputFormatPDF;
 193   }
 194
 195   *aOutputFormat = format;
 196   return NS_OK;
 197 }
 198
 199 /**
 200  * Reimplementation of nsPrintSettings functions so that we get the values
 201  * from the GTK objects rather than our own variables.
 202  */
 203
 204 NS_IMETHODIMP
 205 nsPrintSettingsGTK::SetPageRanges(const nsTArray<int32_t>& aRanges) {
 206   if (aRanges.Length() % 2 != 0) {
 207     return NS_ERROR_FAILURE;
 208   }
 209
 210   gtk_print_settings_set_print_pages(
 211       mPrintSettings,
 212       aRanges.IsEmpty() ? GTK_PRINT_PAGES_ALL : GTK_PRINT_PAGES_RANGES);
 213
 214   nsTArray<GtkPageRange> ranges;
 215   ranges.SetCapacity(aRanges.Length() / 2);
 216   for (size_t i = 0; i < aRanges.Length(); i += 2) {
 217     GtkPageRange* gtkRange = ranges.AppendElement();
 218     gtkRange->start = aRanges[i] - 1;
 219     gtkRange->end = aRanges[i + 1] - 1;
 220   }
 221
 222   gtk_print_settings_set_page_ranges(mPrintSettings, ranges.Elements(),
 223                                      ranges.Length());
 224   return NS_OK;
 225 }
 226
 227 NS_IMETHODIMP
 228 nsPrintSettingsGTK::GetPrintReversed(bool* aPrintReversed) {
 229   *aPrintReversed = gtk_print_settings_get_reverse(mPrintSettings);
 230   return NS_OK;
 231 }
 232 NS_IMETHODIMP
 233 nsPrintSettingsGTK::SetPrintReversed(bool aPrintReversed) {
 234   gtk_print_settings_set_reverse(mPrintSettings, aPrintReversed);
 235   return NS_OK;
 236 }
 237
 238 NS_IMETHODIMP
 239 nsPrintSettingsGTK::GetPrintInColor(bool* aPrintInColor) {
 240   *aPrintInColor = gtk_print_settings_get_use_color(mPrintSettings);
 241   return NS_OK;
 242 }
 243 NS_IMETHODIMP
 244 nsPrintSettingsGTK::SetPrintInColor(bool aPrintInColor) {
 245   gtk_print_settings_set_use_color(mPrintSettings, aPrintInColor);
 246   return NS_OK;
 247 }
 248
 249 NS_IMETHODIMP
 250 nsPrintSettingsGTK::GetOrientation(int32_t* aOrientation) {
 251   NS_ENSURE_ARG_POINTER(aOrientation);
 252
 253   GtkPageOrientation gtkOrient = gtk_page_setup_get_orientation(mPageSetup);
 254   switch (gtkOrient) {
 255     case GTK_PAGE_ORIENTATION_LANDSCAPE:
 256     case GTK_PAGE_ORIENTATION_REVERSE_LANDSCAPE:
 257       *aOrientation = kLandscapeOrientation;
 258       break;
 259
 260     case GTK_PAGE_ORIENTATION_PORTRAIT:
 261     case GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT:
 262     default:
 263       *aOrientation = kPortraitOrientation;
 264   }
 265   return NS_OK;
 266 }
 267 NS_IMETHODIMP
 268 nsPrintSettingsGTK::SetOrientation(int32_t aOrientation) {
 269   GtkPageOrientation gtkOrient;
 270   if (aOrientation == kLandscapeOrientation)
 271     gtkOrient = GTK_PAGE_ORIENTATION_LANDSCAPE;
 272   else
 273     gtkOrient = GTK_PAGE_ORIENTATION_PORTRAIT;
 274
 275   gtk_print_settings_set_orientation(mPrintSettings, gtkOrient);
 276   gtk_page_setup_set_orientation(mPageSetup, gtkOrient);
 277   return NS_OK;
 278 }
 279
 280 NS_IMETHODIMP
 281 nsPrintSettingsGTK::GetToFileName(nsAString& aToFileName) {
 282   // Get the gtk output filename
 283   const char* gtk_output_uri =
 284       gtk_print_settings_get(mPrintSettings, GTK_PRINT_SETTINGS_OUTPUT_URI);
 285   if (!gtk_output_uri) {
 286     aToFileName = mToFileName;
 287     return NS_OK;
 288   }
 289
 290   // Convert to an nsIFile
 291   nsCOMPtr<nsIFile> file;
 292   nsresult rv = NS_GetFileFromURLSpec(nsDependentCString(gtk_output_uri),
 293                                       getter_AddRefs(file));
 294   if (NS_FAILED(rv)) return rv;
 295
 296   // Extract the path
 297   return file->GetPath(aToFileName);
 298 }
 299
 300 NS_IMETHODIMP
 301 nsPrintSettingsGTK::SetToFileName(const nsAString& aToFileName) {
 302   if (aToFileName.IsEmpty()) {
 303     mToFileName.SetLength(0);
 304     gtk_print_settings_set(mPrintSettings, GTK_PRINT_SETTINGS_OUTPUT_URI,
 305                            nullptr);
 306     return NS_OK;
 307   }
 308
 309   gtk_print_settings_set(mPrintSettings, GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT,
 310                          "pdf");
 311
 312   nsCOMPtr<nsIFile> file;
 313   nsresult rv = NS_NewLocalFile(aToFileName, getter_AddRefs(file));
 314   NS_ENSURE_SUCCESS(rv, rv);
 315
 316   // Convert the nsIFile to a URL
 317   nsAutoCString url;
 318   rv = NS_GetURLSpecFromFile(file, url);
 319   NS_ENSURE_SUCCESS(rv, rv);
 320
 321   gtk_print_settings_set(mPrintSettings, GTK_PRINT_SETTINGS_OUTPUT_URI,
 322                          url.get());
 323   mToFileName = aToFileName;
 324
 325   return NS_OK;
 326 }
 327
 328 NS_IMETHODIMP
 329 nsPrintSettingsGTK::GetPrinterName(nsAString& aPrinter) {
 330   const char* gtkPrintName = gtk_print_settings_get_printer(mPrintSettings);
 331   if (!gtkPrintName) {
 332     if (GTK_IS_PRINTER(mGTKPrinter)) {
 333       gtkPrintName = gtk_printer_get_name(mGTKPrinter);
 334     } else {
 335       // This mimics what nsPrintSettingsImpl does when we try to Get before we
 336       // Set
 337       aPrinter.Truncate();
 338       return NS_OK;
 339     }
 340   }
 341   CopyUTF8toUTF16(mozilla::MakeStringSpan(gtkPrintName), aPrinter);
 342   return NS_OK;
 343 }
 344
 345 NS_IMETHODIMP
 346 nsPrintSettingsGTK::SetPrinterName(const nsAString& aPrinter) {
 347   NS_ConvertUTF16toUTF8 gtkPrinter(aPrinter);
 348
 349   if (StringBeginsWith(gtkPrinter, "CUPS/"_ns)) {
 350     // Strip off "CUPS/"; GTK might recognize the rest
 351     gtkPrinter.Cut(0, strlen("CUPS/"));
 352   }
 353
 354   // Give mPrintSettings the passed-in printer name if either...
 355   // - it has no printer name stored yet
 356   // - it has an existing printer name that's different from
 357   //   the name passed to this function.
 358   const char* oldPrinterName = gtk_print_settings_get_printer(mPrintSettings);
 359   if (!oldPrinterName || !gtkPrinter.Equals(oldPrinterName)) {
 360     mIsInitedFromPrinter = false;
 361     mIsInitedFromPrefs = false;
 362     gtk_print_settings_set_printer(mPrintSettings, gtkPrinter.get());
 363   }
 364
 365   return NS_OK;
 366 }
 367
 368 NS_IMETHODIMP
 369 nsPrintSettingsGTK::GetNumCopies(int32_t* aNumCopies) {
 370   NS_ENSURE_ARG_POINTER(aNumCopies);
 371   *aNumCopies = gtk_print_settings_get_n_copies(mPrintSettings);
 372   return NS_OK;
 373 }
 374 NS_IMETHODIMP
 375 nsPrintSettingsGTK::SetNumCopies(int32_t aNumCopies) {
 376   gtk_print_settings_set_n_copies(mPrintSettings, aNumCopies);
 377   return NS_OK;
 378 }
 379
 380 NS_IMETHODIMP
 381 nsPrintSettingsGTK::GetScaling(double* aScaling) {
 382   *aScaling = gtk_print_settings_get_scale(mPrintSettings) / 100.0;
 383   return NS_OK;
 384 }
 385
 386 NS_IMETHODIMP
 387 nsPrintSettingsGTK::SetScaling(double aScaling) {
 388   gtk_print_settings_set_scale(mPrintSettings, aScaling * 100.0);
 389   return NS_OK;
 390 }
 391
 392 NS_IMETHODIMP
 393 nsPrintSettingsGTK::GetPaperId(nsAString& aPaperId) {
 394   const gchar* name =
 395       gtk_paper_size_get_name(gtk_page_setup_get_paper_size(mPageSetup));
 396   CopyUTF8toUTF16(mozilla::MakeStringSpan(name), aPaperId);
 397   return NS_OK;
 398 }
 399 NS_IMETHODIMP
 400 nsPrintSettingsGTK::SetPaperId(const nsAString& aPaperId) {
 401   NS_ConvertUTF16toUTF8 gtkPaperName(aPaperId);
 402
 403   // Convert these Gecko names to GTK names
 404   // XXX (jfkthame): is this still relevant?
 405   if (gtkPaperName.EqualsIgnoreCase("letter"))
 406     gtkPaperName.AssignLiteral(GTK_PAPER_NAME_LETTER);
 407   else if (gtkPaperName.EqualsIgnoreCase("legal"))
 408     gtkPaperName.AssignLiteral(GTK_PAPER_NAME_LEGAL);
 409
 410   GtkPaperSize* oldPaperSize = gtk_page_setup_get_paper_size(mPageSetup);
 411   gdouble width = gtk_paper_size_get_width(oldPaperSize, GTK_UNIT_INCH);
 412   gdouble height = gtk_paper_size_get_height(oldPaperSize, GTK_UNIT_INCH);
 413
 414   // Try to get the display name from the name so our paper size fits in the
 415   // Page Setup dialog.
 416   GtkPaperSize* paperSize = gtk_paper_size_new(gtkPaperName.get());
 417   GtkPaperSize* customPaperSize = gtk_paper_size_new_custom(
 418       gtkPaperName.get(), gtk_paper_size_get_display_name(paperSize), width,
 419       height, GTK_UNIT_INCH);
 420   gtk_paper_size_free(paperSize);
 421
 422   gtk_page_setup_set_paper_size(mPageSetup, customPaperSize);
 423   gtk_paper_size_free(customPaperSize);
 424   SaveNewPageSize();
 425   return NS_OK;
 426 }
 427
 428 GtkUnit nsPrintSettingsGTK::GetGTKUnit(int16_t aGeckoUnit) {
 429   if (aGeckoUnit == kPaperSizeMillimeters)
 430     return GTK_UNIT_MM;
 431   else
 432     return GTK_UNIT_INCH;
 433 }
 434
 435 void nsPrintSettingsGTK::SaveNewPageSize() {
 436   gtk_print_settings_set_paper_size(mPrintSettings,
 437                                     gtk_page_setup_get_paper_size(mPageSetup));
 438 }
 439
 440 void nsPrintSettingsGTK::InitUnwriteableMargin() {
 441   mUnwriteableMargin.SizeTo(
 442       NS_INCHES_TO_INT_TWIPS(
 443           gtk_page_setup_get_top_margin(mPageSetup, GTK_UNIT_INCH)),
 444       NS_INCHES_TO_INT_TWIPS(
 445           gtk_page_setup_get_right_margin(mPageSetup, GTK_UNIT_INCH)),
 446       NS_INCHES_TO_INT_TWIPS(
 447           gtk_page_setup_get_bottom_margin(mPageSetup, GTK_UNIT_INCH)),
 448       NS_INCHES_TO_INT_TWIPS(
 449           gtk_page_setup_get_left_margin(mPageSetup, GTK_UNIT_INCH)));
 450 }
 451
 452 /**
 453  * NOTE: Need a custom set of SetUnwriteableMargin functions, because
 454  * whenever we change mUnwriteableMargin, we must pass the change
 455  * down to our GTKPageSetup object.  (This is needed in order for us
 456  * to give the correct default values in nsPrintDialogGTK.)
 457  *
 458  * It's important that the following functions pass
 459  * mUnwriteableMargin values rather than aUnwriteableMargin values
 460  * to gtk_page_setup_set_[blank]_margin, because the two may not be
 461  * the same.  (Specifically, negative values of aUnwriteableMargin
 462  * are ignored by the nsPrintSettings::SetUnwriteableMargin functions.)
 463  */
 464 NS_IMETHODIMP
 465 nsPrintSettingsGTK::SetUnwriteableMarginInTwips(
 466     nsIntMargin& aUnwriteableMargin) {
 467   nsPrintSettings::SetUnwriteableMarginInTwips(aUnwriteableMargin);
 468   gtk_page_setup_set_top_margin(
 469       mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.top), GTK_UNIT_INCH);
 470   gtk_page_setup_set_left_margin(
 471       mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.left), GTK_UNIT_INCH);
 472   gtk_page_setup_set_bottom_margin(
 473       mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.bottom), GTK_UNIT_INCH);
 474   gtk_page_setup_set_right_margin(
 475       mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.right), GTK_UNIT_INCH);
 476   return NS_OK;
 477 }
 478
 479 NS_IMETHODIMP
 480 nsPrintSettingsGTK::SetUnwriteableMarginTop(double aUnwriteableMarginTop) {
 481   nsPrintSettings::SetUnwriteableMarginTop(aUnwriteableMarginTop);
 482   gtk_page_setup_set_top_margin(
 483       mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.top), GTK_UNIT_INCH);
 484   return NS_OK;
 485 }
 486
 487 NS_IMETHODIMP
 488 nsPrintSettingsGTK::SetUnwriteableMarginLeft(double aUnwriteableMarginLeft) {
 489   nsPrintSettings::SetUnwriteableMarginLeft(aUnwriteableMarginLeft);
 490   gtk_page_setup_set_left_margin(
 491       mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.left), GTK_UNIT_INCH);
 492   return NS_OK;
 493 }
 494
 495 NS_IMETHODIMP
 496 nsPrintSettingsGTK::SetUnwriteableMarginBottom(
 497     double aUnwriteableMarginBottom) {
 498   nsPrintSettings::SetUnwriteableMarginBottom(aUnwriteableMarginBottom);
 499   gtk_page_setup_set_bottom_margin(
 500       mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.bottom), GTK_UNIT_INCH);
 501   return NS_OK;
 502 }
 503
 504 NS_IMETHODIMP
 505 nsPrintSettingsGTK::SetUnwriteableMarginRight(double aUnwriteableMarginRight) {
 506   nsPrintSettings::SetUnwriteableMarginRight(aUnwriteableMarginRight);
 507   gtk_page_setup_set_right_margin(
 508       mPageSetup, NS_TWIPS_TO_INCHES(mUnwriteableMargin.right), GTK_UNIT_INCH);
 509   return NS_OK;
 510 }
 511
 512 NS_IMETHODIMP
 513 nsPrintSettingsGTK::GetPaperWidth(double* aPaperWidth) {
 514   NS_ENSURE_ARG_POINTER(aPaperWidth);
 515   GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
 516   *aPaperWidth =
 517       gtk_paper_size_get_width(paperSize, GetGTKUnit(mPaperSizeUnit));
 518   return NS_OK;
 519 }
 520 NS_IMETHODIMP
 521 nsPrintSettingsGTK::SetPaperWidth(double aPaperWidth) {
 522   GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
 523   gtk_paper_size_set_size(
 524       paperSize, aPaperWidth,
 525       gtk_paper_size_get_height(paperSize, GetGTKUnit(mPaperSizeUnit)),
 526       GetGTKUnit(mPaperSizeUnit));
 527   SaveNewPageSize();
 528   return NS_OK;
 529 }
 530
 531 NS_IMETHODIMP
 532 nsPrintSettingsGTK::GetPaperHeight(double* aPaperHeight) {
 533   NS_ENSURE_ARG_POINTER(aPaperHeight);
 534   GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
 535   *aPaperHeight =
 536       gtk_paper_size_get_height(paperSize, GetGTKUnit(mPaperSizeUnit));
 537   return NS_OK;
 538 }
 539 NS_IMETHODIMP
 540 nsPrintSettingsGTK::SetPaperHeight(double aPaperHeight) {
 541   GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
 542   gtk_paper_size_set_size(
 543       paperSize,
 544       gtk_paper_size_get_width(paperSize, GetGTKUnit(mPaperSizeUnit)),
 545       aPaperHeight, GetGTKUnit(mPaperSizeUnit));
 546   SaveNewPageSize();
 547   return NS_OK;
 548 }
 549
 550 NS_IMETHODIMP
 551 nsPrintSettingsGTK::SetPaperSizeUnit(int16_t aPaperSizeUnit) {
 552   // Convert units internally. e.g. they might have set the values while we're
 553   // still in mm but they change to inch just afterwards, expecting that their
 554   // sizes are in inches.
 555   GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
 556   gtk_paper_size_set_size(
 557       paperSize,
 558       gtk_paper_size_get_width(paperSize, GetGTKUnit(mPaperSizeUnit)),
 559       gtk_paper_size_get_height(paperSize, GetGTKUnit(mPaperSizeUnit)),
 560       GetGTKUnit(aPaperSizeUnit));
 561   SaveNewPageSize();
 562
 563   mPaperSizeUnit = aPaperSizeUnit;
 564   return NS_OK;
 565 }
 566
 567 NS_IMETHODIMP
 568 nsPrintSettingsGTK::GetEffectivePageSize(double* aWidth, double* aHeight) {
 569   GtkPaperSize* paperSize = gtk_page_setup_get_paper_size(mPageSetup);
 570   if (mPaperSizeUnit == kPaperSizeInches) {
 571     *aWidth =
 572         NS_INCHES_TO_TWIPS(gtk_paper_size_get_width(paperSize, GTK_UNIT_INCH));
 573     *aHeight =
 574         NS_INCHES_TO_TWIPS(gtk_paper_size_get_height(paperSize, GTK_UNIT_INCH));
 575   } else {
 576     MOZ_ASSERT(mPaperSizeUnit == kPaperSizeMillimeters,
 577                "unexpected paper size unit");
 578     *aWidth = NS_MILLIMETERS_TO_TWIPS(
 579         gtk_paper_size_get_width(paperSize, GTK_UNIT_MM));
 580     *aHeight = NS_MILLIMETERS_TO_TWIPS(
 581         gtk_paper_size_get_height(paperSize, GTK_UNIT_MM));
 582   }
 583   GtkPageOrientation gtkOrient = gtk_page_setup_get_orientation(mPageSetup);
 584
 585   if (gtkOrient == GTK_PAGE_ORIENTATION_LANDSCAPE ||
 586       gtkOrient == GTK_PAGE_ORIENTATION_REVERSE_LANDSCAPE) {
 587     double temp = *aWidth;
 588     *aWidth = *aHeight;
 589     *aHeight = temp;
 590   }
 591   return NS_OK;
 592 }
 593
 594 NS_IMETHODIMP
 595 nsPrintSettingsGTK::GetPageRanges(nsTArray<int32_t>& aPages) {
 596   GtkPrintPages gtkRange = gtk_print_settings_get_print_pages(mPrintSettings);
 597   if (gtkRange != GTK_PRINT_PAGES_RANGES) {
 598     aPages.Clear();
 599     return NS_OK;
 600   }
 601
 602   gint ctRanges;
 603   GtkPageRange* lstRanges =
 604       gtk_print_settings_get_page_ranges(mPrintSettings, &ctRanges);
 605
 606   aPages.Clear();
 607
 608   for (gint i = 0; i < ctRanges; i++) {
 609     aPages.AppendElement(lstRanges[i].start + 1);
 610     aPages.AppendElement(lstRanges[i].end + 1);
 611   }
 612
 613   g_free(lstRanges);
 614   return NS_OK;
 615 }
 616
 617 NS_IMETHODIMP
 618 nsPrintSettingsGTK::GetResolution(int32_t* aResolution) {
 619   *aResolution = gtk_print_settings_get_resolution(mPrintSettings);
 620   return NS_OK;
 621 }
 622
 623 NS_IMETHODIMP
 624 nsPrintSettingsGTK::SetResolution(int32_t aResolution) {
 625   gtk_print_settings_set_resolution(mPrintSettings, aResolution);
 626   return NS_OK;
 627 }
 628
 629 NS_IMETHODIMP
 630 nsPrintSettingsGTK::GetDuplex(int32_t* aDuplex) {
 631   NS_ENSURE_ARG_POINTER(aDuplex);
 632
 633   // Default to DuplexNone.
 634   *aDuplex = kDuplexNone;
 635
 636   if (!gtk_print_settings_has_key(mPrintSettings, GTK_PRINT_SETTINGS_DUPLEX)) {
 637     return NS_OK;
 638   }
 639
 640   switch (gtk_print_settings_get_duplex(mPrintSettings)) {
 641     case GTK_PRINT_DUPLEX_SIMPLEX:
 642       *aDuplex = kDuplexNone;
 643       break;
 644     case GTK_PRINT_DUPLEX_HORIZONTAL:
 645       *aDuplex = kDuplexFlipOnLongEdge;
 646       break;
 647     case GTK_PRINT_DUPLEX_VERTICAL:
 648       *aDuplex = kDuplexFlipOnShortEdge;
 649       break;
 650   }
 651
 652   return NS_OK;
 653 }
 654
 655 NS_IMETHODIMP
 656 nsPrintSettingsGTK::SetDuplex(int32_t aDuplex) {
 657   uint32_t duplex = static_cast<uint32_t>(aDuplex);
 658   MOZ_ASSERT(duplex <= kDuplexFlipOnShortEdge,
 659              "value is out of bounds for duplex enum");
 660
 661   // We want to set the GTK CUPS Duplex setting in addition to calling
 662   // gtk_print_settings_set_duplex(). Some systems may look for one, or the
 663   // other, so it is best to set them both consistently.
 664   switch (duplex) {
 665     case kDuplexNone:
 666       gtk_print_settings_set(mPrintSettings, kCupsDuplex, kCupsDuplexNone);
 667       gtk_print_settings_set_duplex(mPrintSettings, GTK_PRINT_DUPLEX_SIMPLEX);
 668       break;
 669     case kDuplexFlipOnLongEdge:
 670       gtk_print_settings_set(mPrintSettings, kCupsDuplex, kCupsDuplexNoTumble);
 671       gtk_print_settings_set_duplex(mPrintSettings,
 672                                     GTK_PRINT_DUPLEX_HORIZONTAL);
 673       break;
 674     case kDuplexFlipOnShortEdge:
 675       gtk_print_settings_set(mPrintSettings, kCupsDuplex, kCupsDuplexTumble);
 676       gtk_print_settings_set_duplex(mPrintSettings, GTK_PRINT_DUPLEX_VERTICAL);
 677       break;
 678   }
 679
 680   return NS_OK;
 681 }