widget/windows/nsPrintSettingsWin.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 #include "nsPrintSettingsWin.h"
   6
   7 #include "mozilla/ArrayUtils.h"
   8 #include "nsCRT.h"
   9 #include "nsDeviceContextSpecWin.h"
  10 #include "nsPrintSettingsImpl.h"
  11 #include "WinUtils.h"
  12
  13 using namespace mozilla;
  14
  15 // Using paper sizes from wingdi.h and the units given there, plus a little
  16 // extra research for the ones it doesn't give. Looks like the list hasn't
  17 // changed since Windows 2000, so should be fairly stable now.
  18 const short kPaperSizeUnits[] = {
  19     nsIPrintSettings::kPaperSizeMillimeters,  // Not Used default to mm as
  20                                               // DEVMODE uses tenths of mm, just
  21                                               // in case
  22     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_LETTER
  23     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_LETTERSMALL
  24     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_TABLOID
  25     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_LEDGER
  26     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_LEGAL
  27     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_STATEMENT
  28     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_EXECUTIVE
  29     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A3
  30     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A4
  31     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A4SMALL
  32     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A5
  33     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_B4
  34     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_B5
  35     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_FOLIO
  36     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_QUARTO
  37     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_10X14
  38     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_11X17
  39     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_NOTE
  40     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_ENV_9
  41     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_ENV_10
  42     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_ENV_11
  43     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_ENV_12
  44     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_ENV_14
  45     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_CSHEET
  46     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_DSHEET
  47     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_ESHEET
  48     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_DL
  49     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_C5
  50     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_C3
  51     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_C4
  52     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_C6
  53     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_C65
  54     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_B4
  55     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_B5
  56     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_B6
  57     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_ITALY
  58     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_ENV_MONARCH
  59     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_ENV_PERSONAL
  60     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_FANFOLD_US
  61     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_FANFOLD_STD_GERMAN
  62     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_FANFOLD_LGL_GERMAN
  63     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ISO_B4
  64     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JAPANESE_POSTCARD
  65     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_9X11
  66     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_10X11
  67     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_15X11
  68     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_ENV_INVITE
  69     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_RESERVED_48
  70     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_RESERVED_49
  71     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_LETTER_EXTRA
  72     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_LEGAL_EXTRA
  73     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_TABLOID_EXTRA
  74     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_A4_EXTRA
  75     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_LETTER_TRANSVERSE
  76     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A4_TRANSVERSE
  77     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_LETTER_EXTRA_TRANSVERSE
  78     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A_PLUS
  79     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_B_PLUS
  80     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_LETTER_PLUS
  81     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A4_PLUS
  82     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A5_TRANSVERSE
  83     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_B5_TRANSVERSE
  84     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A3_EXTRA
  85     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A5_EXTRA
  86     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_B5_EXTRA
  87     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A2
  88     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A3_TRANSVERSE
  89     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A3_EXTRA_TRANSVERSE
  90     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_DBL_JAPANESE_POSTCARD
  91     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A6
  92     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JENV_KAKU2
  93     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JENV_KAKU3
  94     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JENV_CHOU3
  95     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JENV_CHOU4
  96     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_LETTER_ROTATED
  97     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A3_ROTATED
  98     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A4_ROTATED
  99     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A5_ROTATED
 100     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_B4_JIS_ROTATED
 101     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_B5_JIS_ROTATED
 102     nsIPrintSettings::
 103         kPaperSizeMillimeters,  // DMPAPER_JAPANESE_POSTCARD_ROTATED
 104     nsIPrintSettings::
 105         kPaperSizeMillimeters,  // DMPAPER_DBL_JAPANESE_POSTCARD_ROTATED
 106     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_A6_ROTATED
 107     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JENV_KAKU2_ROTATED
 108     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JENV_KAKU3_ROTATED
 109     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JENV_CHOU3_ROTATED
 110     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JENV_CHOU4_ROTATED
 111     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_B6_JIS
 112     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_B6_JIS_ROTATED
 113     nsIPrintSettings::kPaperSizeInches,       // DMPAPER_12X11
 114     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JENV_YOU4
 115     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_JENV_YOU4_ROTATED
 116     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_P16K
 117     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_P32K
 118     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_P32KBIG
 119     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_1
 120     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_2
 121     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_3
 122     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_4
 123     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_5
 124     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_6
 125     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_7
 126     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_8
 127     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_9
 128     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_10
 129     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_P16K_ROTATED
 130     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_P32K_ROTATED
 131     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_P32KBIG_ROTATED
 132     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_1_ROTATED
 133     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_2_ROTATED
 134     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_3_ROTATED
 135     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_4_ROTATED
 136     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_5_ROTATED
 137     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_6_ROTATED
 138     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_7_ROTATED
 139     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_8_ROTATED
 140     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_9_ROTATED
 141     nsIPrintSettings::kPaperSizeMillimeters,  // DMPAPER_PENV_10_ROTATED
 142 };
 143
 144 NS_IMPL_ISUPPORTS_INHERITED(nsPrintSettingsWin, nsPrintSettings,
 145                             nsIPrintSettingsWin)
 146
 147 /** ---------------------------------------------------
 148  *  See documentation in nsPrintSettingsWin.h
 149  *      @update
 150  */
 151 nsPrintSettingsWin::nsPrintSettingsWin()
 152     : nsPrintSettings(),
 153       mDeviceName(nullptr),
 154       mDriverName(nullptr),
 155       mDevMode(nullptr) {}
 156
 157 /** ---------------------------------------------------
 158  *  See documentation in nsPrintSettingsWin.h
 159  *      @update
 160  */
 161 nsPrintSettingsWin::nsPrintSettingsWin(const nsPrintSettingsWin& aPS)
 162     : mDevMode(nullptr) {
 163   *this = aPS;
 164 }
 165
 166 /* static */
 167 void nsPrintSettingsWin::PaperSizeUnitFromDmPaperSize(short aPaperSize,
 168                                                       int16_t& aPaperSizeUnit) {
 169   if (aPaperSize > 0 && aPaperSize < int32_t(ArrayLength(kPaperSizeUnits))) {
 170     aPaperSizeUnit = kPaperSizeUnits[aPaperSize];
 171   }
 172 }
 173
 174 void nsPrintSettingsWin::InitWithInitializer(
 175     const PrintSettingsInitializer& aSettings) {
 176   nsPrintSettings::InitWithInitializer(aSettings);
 177
 178   if (aSettings.mDevmodeWStorage.Length() < sizeof(DEVMODEW)) {
 179     return;
 180   }
 181
 182   auto* devmode =
 183       reinterpret_cast<const DEVMODEW*>(aSettings.mDevmodeWStorage.Elements());
 184   if (devmode->dmSize != sizeof(DEVMODEW) ||
 185       devmode->dmSize + devmode->dmDriverExtra >
 186           aSettings.mDevmodeWStorage.Length()) {
 187     return;
 188   }
 189
 190   // SetDevMode copies the DEVMODE.
 191   SetDevMode(const_cast<DEVMODEW*>(devmode));
 192
 193   if (mDevMode->dmFields & DM_SCALE) {
 194     // Since we do the scaling, grab the DEVMODE value and reset it back to 100.
 195     double scale = double(mDevMode->dmScale) / 100.0f;
 196     if (mScaling == 1.0 || scale != 1.0) {
 197       SetScaling(scale);
 198     }
 199     mDevMode->dmScale = 100;
 200   }
 201 }
 202
 203 already_AddRefed<nsIPrintSettings> CreatePlatformPrintSettings(
 204     const PrintSettingsInitializer& aSettings) {
 205   RefPtr<nsPrintSettings> settings = aSettings.mPrintSettings.get();
 206   if (!settings) {
 207     settings = MakeRefPtr<nsPrintSettingsWin>();
 208   }
 209   settings->InitWithInitializer(aSettings);
 210   return settings.forget();
 211 }
 212
 213 /** ---------------------------------------------------
 214  *  See documentation in nsPrintSettingsWin.h
 215  *      @update
 216  */
 217 nsPrintSettingsWin::~nsPrintSettingsWin() {
 218   if (mDevMode) ::HeapFree(::GetProcessHeap(), 0, mDevMode);
 219 }
 220
 221 NS_IMETHODIMP nsPrintSettingsWin::SetDeviceName(const nsAString& aDeviceName) {
 222   mDeviceName = aDeviceName;
 223   return NS_OK;
 224 }
 225 NS_IMETHODIMP nsPrintSettingsWin::GetDeviceName(nsAString& aDeviceName) {
 226   aDeviceName = mDeviceName;
 227   return NS_OK;
 228 }
 229
 230 NS_IMETHODIMP nsPrintSettingsWin::SetDriverName(const nsAString& aDriverName) {
 231   mDriverName = aDriverName;
 232   return NS_OK;
 233 }
 234 NS_IMETHODIMP nsPrintSettingsWin::GetDriverName(nsAString& aDriverName) {
 235   aDriverName = mDriverName;
 236   return NS_OK;
 237 }
 238
 239 void nsPrintSettingsWin::CopyDevMode(DEVMODEW* aInDevMode,
 240                                      DEVMODEW*& aOutDevMode) {
 241   aOutDevMode = nullptr;
 242   size_t size = aInDevMode->dmSize + aInDevMode->dmDriverExtra;
 243   aOutDevMode =
 244       (LPDEVMODEW)::HeapAlloc(::GetProcessHeap(), HEAP_ZERO_MEMORY, size);
 245   if (aOutDevMode) {
 246     memcpy(aOutDevMode, aInDevMode, size);
 247   }
 248 }
 249
 250 NS_IMETHODIMP nsPrintSettingsWin::GetDevMode(DEVMODEW** aDevMode) {
 251   NS_ENSURE_ARG_POINTER(aDevMode);
 252
 253   if (mDevMode) {
 254     CopyDevMode(mDevMode, *aDevMode);
 255   } else {
 256     *aDevMode = nullptr;
 257   }
 258   return NS_OK;
 259 }
 260
 261 NS_IMETHODIMP nsPrintSettingsWin::SetDevMode(DEVMODEW* aDevMode) {
 262   if (mDevMode) {
 263     ::HeapFree(::GetProcessHeap(), 0, mDevMode);
 264     mDevMode = nullptr;
 265   }
 266
 267   if (aDevMode) {
 268     CopyDevMode(aDevMode, mDevMode);
 269   }
 270   return NS_OK;
 271 }
 272
 273 void nsPrintSettingsWin::InitUnwriteableMargin(HDC aHdc) {
 274   mozilla::gfx::MarginDouble margin =
 275       mozilla::widget::WinUtils::GetUnwriteableMarginsForDeviceInInches(aHdc);
 276
 277   mUnwriteableMargin.SizeTo(NS_INCHES_TO_INT_TWIPS(margin.top),
 278                             NS_INCHES_TO_INT_TWIPS(margin.right),
 279                             NS_INCHES_TO_INT_TWIPS(margin.bottom),
 280                             NS_INCHES_TO_INT_TWIPS(margin.left));
 281 }
 282
 283 void nsPrintSettingsWin::CopyFromNative(HDC aHdc, DEVMODEW* aDevMode) {
 284   MOZ_ASSERT(aHdc);
 285   MOZ_ASSERT(aDevMode);
 286
 287   mIsInitedFromPrinter = true;
 288   if (aDevMode->dmFields & DM_ORIENTATION) {
 289     const bool areSheetsOfPaperPortraitMode =
 290         (aDevMode->dmOrientation == DMORIENT_PORTRAIT);
 291
 292     // If our Windows print settings say that we're producing portrait-mode
 293     // sheets of paper, then our page format must also be portrait-mode; unless
 294     // we've got a pages-per-sheet value with orthogonal pages/sheets, in which
 295     // case it's reversed.
 296     const bool arePagesPortraitMode =
 297         (areSheetsOfPaperPortraitMode != HasOrthogonalPagesPerSheet());
 298
 299     // Record the orientation of the pages (determined above) in mOrientation:
 300     mOrientation = int32_t(arePagesPortraitMode ? kPortraitOrientation
 301                                                 : kLandscapeOrientation);
 302   }
 303
 304   if (aDevMode->dmFields & DM_COPIES) {
 305     mNumCopies = aDevMode->dmCopies;
 306   }
 307
 308   if (aDevMode->dmFields & DM_DUPLEX) {
 309     switch (aDevMode->dmDuplex) {
 310       default:
 311         MOZ_FALLTHROUGH_ASSERT("bad value for dmDuplex field");
 312       case DMDUP_SIMPLEX:
 313         mDuplex = kDuplexNone;
 314         break;
 315       case DMDUP_VERTICAL:
 316         mDuplex = kDuplexFlipOnLongEdge;
 317         break;
 318       case DMDUP_HORIZONTAL:
 319         mDuplex = kDuplexFlipOnShortEdge;
 320         break;
 321     }
 322   }
 323
 324   // Since we do the scaling, grab their value and reset back to 100.
 325   if (aDevMode->dmFields & DM_SCALE) {
 326     double scale = double(aDevMode->dmScale) / 100.0f;
 327     if (mScaling == 1.0 || scale != 1.0) {
 328       mScaling = scale;
 329     }
 330     aDevMode->dmScale = 100;
 331   }
 332
 333   if (aDevMode->dmFields & DM_PAPERSIZE) {
 334     mPaperId.Truncate(0);
 335     mPaperId.AppendInt(aDevMode->dmPaperSize);
 336     // If it is not a paper size we know about, the unit will remain unchanged.
 337     PaperSizeUnitFromDmPaperSize(aDevMode->dmPaperSize, mPaperSizeUnit);
 338   }
 339
 340   if (aDevMode->dmFields & DM_COLOR) {
 341     mPrintInColor = aDevMode->dmColor == DMCOLOR_COLOR;
 342   }
 343
 344   InitUnwriteableMargin(aHdc);
 345
 346   int pixelsPerInchY = ::GetDeviceCaps(aHdc, LOGPIXELSY);
 347   int physicalHeight = ::GetDeviceCaps(aHdc, PHYSICALHEIGHT);
 348   double physicalHeightInch = double(physicalHeight) / pixelsPerInchY;
 349   int pixelsPerInchX = ::GetDeviceCaps(aHdc, LOGPIXELSX);
 350   int physicalWidth = ::GetDeviceCaps(aHdc, PHYSICALWIDTH);
 351   double physicalWidthInch = double(physicalWidth) / pixelsPerInchX;
 352
 353   // Get the paper size from the device context rather than the DEVMODE, because
 354   // it is always available.
 355   double paperHeightInch = mOrientation == kPortraitOrientation
 356                                ? physicalHeightInch
 357                                : physicalWidthInch;
 358   mPaperHeight = mPaperSizeUnit == kPaperSizeInches
 359                      ? paperHeightInch
 360                      : paperHeightInch * MM_PER_INCH_FLOAT;
 361
 362   double paperWidthInch = mOrientation == kPortraitOrientation
 363                               ? physicalWidthInch
 364                               : physicalHeightInch;
 365   mPaperWidth = mPaperSizeUnit == kPaperSizeInches
 366                     ? paperWidthInch
 367                     : paperWidthInch * MM_PER_INCH_FLOAT;
 368
 369   // Using LOGPIXELSY to match existing code for print scaling calculations.
 370   mResolution = pixelsPerInchY;
 371 }
 372
 373 void nsPrintSettingsWin::CopyToNative(DEVMODEW* aDevMode) {
 374   MOZ_ASSERT(aDevMode);
 375
 376   if (!mPaperId.IsEmpty()) {
 377     aDevMode->dmPaperSize = _wtoi((const wchar_t*)mPaperId.BeginReading());
 378     aDevMode->dmFields |= DM_PAPERSIZE;
 379   } else {
 380     aDevMode->dmPaperSize = 0;
 381     aDevMode->dmFields &= ~DM_PAPERSIZE;
 382   }
 383
 384   aDevMode->dmFields |= DM_COLOR;
 385   aDevMode->dmColor = mPrintInColor ? DMCOLOR_COLOR : DMCOLOR_MONOCHROME;
 386
 387   // The length and width in DEVMODE are always in tenths of a millimeter.
 388   double tenthsOfAmmPerSizeUnit =
 389       mPaperSizeUnit == kPaperSizeInches ? MM_PER_INCH_FLOAT * 10.0 : 10.0;
 390
 391   // Note: small page sizes can be required here for sticker, label and slide
 392   // printers etc. see bug 1271900.
 393   if (mPaperHeight > 0) {
 394     aDevMode->dmPaperLength = std::round(mPaperHeight * tenthsOfAmmPerSizeUnit);
 395     aDevMode->dmFields |= DM_PAPERLENGTH;
 396   } else {
 397     aDevMode->dmPaperLength = 0;
 398     aDevMode->dmFields &= ~DM_PAPERLENGTH;
 399   }
 400
 401   if (mPaperWidth > 0) {
 402     aDevMode->dmPaperWidth = std::round(mPaperWidth * tenthsOfAmmPerSizeUnit);
 403     aDevMode->dmFields |= DM_PAPERWIDTH;
 404   } else {
 405     aDevMode->dmPaperWidth = 0;
 406     aDevMode->dmFields &= ~DM_PAPERWIDTH;
 407   }
 408
 409   // Setup Orientation
 410   aDevMode->dmOrientation = GetSheetOrientation() == kPortraitOrientation
 411                                 ? DMORIENT_PORTRAIT
 412                                 : DMORIENT_LANDSCAPE;
 413   aDevMode->dmFields |= DM_ORIENTATION;
 414
 415   // Setup Number of Copies
 416   aDevMode->dmCopies = mNumCopies;
 417   aDevMode->dmFields |= DM_COPIES;
 418
 419   // Setup Simplex/Duplex mode
 420   switch (mDuplex) {
 421     case kDuplexNone:
 422       aDevMode->dmDuplex = DMDUP_SIMPLEX;
 423       aDevMode->dmFields |= DM_DUPLEX;
 424       break;
 425     case kDuplexFlipOnLongEdge:
 426       aDevMode->dmDuplex = DMDUP_VERTICAL;
 427       aDevMode->dmFields |= DM_DUPLEX;
 428       break;
 429     case kDuplexFlipOnShortEdge:
 430       aDevMode->dmDuplex = DMDUP_HORIZONTAL;
 431       aDevMode->dmFields |= DM_DUPLEX;
 432       break;
 433     default:
 434       MOZ_ASSERT_UNREACHABLE("bad value for duplex option");
 435       break;
 436   }
 437 }
 438
 439 //-------------------------------------------
 440 nsresult nsPrintSettingsWin::_Clone(nsIPrintSettings** _retval) {
 441   RefPtr<nsPrintSettingsWin> printSettings = new nsPrintSettingsWin(*this);
 442   printSettings.forget(_retval);
 443   return NS_OK;
 444 }
 445
 446 //-------------------------------------------
 447 nsPrintSettingsWin& nsPrintSettingsWin::operator=(
 448     const nsPrintSettingsWin& rhs) {
 449   if (this == &rhs) {
 450     return *this;
 451   }
 452
 453   ((nsPrintSettings&)*this) = rhs;
 454
 455   // Use free because we used the native malloc to create the memory
 456   if (mDevMode) {
 457     ::HeapFree(::GetProcessHeap(), 0, mDevMode);
 458   }
 459
 460   mDeviceName = rhs.mDeviceName;
 461   mDriverName = rhs.mDriverName;
 462
 463   if (rhs.mDevMode) {
 464     CopyDevMode(rhs.mDevMode, mDevMode);
 465   } else {
 466     mDevMode = nullptr;
 467   }
 468
 469   return *this;
 470 }
 471
 472 //-------------------------------------------
 473 nsresult nsPrintSettingsWin::_Assign(nsIPrintSettings* aPS) {
 474   nsPrintSettingsWin* psWin = static_cast<nsPrintSettingsWin*>(aPS);
 475   *this = *psWin;
 476   return NS_OK;
 477 }