mcs/class/System.Drawing/System.Drawing.Printing/PrintingServicesUnix.cs

   1 //#define PrintDebug
   2 //
   3 // Copyright (C) 2005, 2007 Novell, Inc. http://www.novell.com
   4 //
   5 // Permission is hereby granted, free of charge, to any person obtaining
   6 // a copy of this software and associated documentation files (the
   7 // "Software"), to deal in the Software without restriction, including
   8 // without limitation the rights to use, copy, modify, merge, publish,
   9 // distribute, sublicense, and/or sell copies of the Software, and to
  10 // permit persons to whom the Software is furnished to do so, subject to
  11 // the following conditions:
  12 //
  13 // The above copyright notice and this permission notice shall be
  14 // included in all copies or substantial portions of the Software.
  15 //
  16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23 //
  24 // Author:
  25 //
  26 //      Jordi Mas i Hernandez, jordimash@gmail.com
  27 //
  28
  29 using System.Runtime.InteropServices;
  30 using System.Collections;
  31 using System.Collections.Specialized;
  32 using System.Drawing.Printing;
  33 using System.ComponentModel;
  34 using System.Drawing.Imaging;
  35 using System.Text;
  36 using System.IO;
  37
  38 namespace System.Drawing.Printing
  39 {
  40         internal class PrintingServicesUnix : PrintingServices
  41         {
  42                 #region Private Fields
  43
  44                 private static Hashtable doc_info = new Hashtable ();
  45                 private static bool cups_installed;
  46
  47                 //private string printer_name;
  48
  49                 private static Hashtable installed_printers;
  50                 private static string default_printer = String.Empty;
  51
  52                 #endregion
  53
  54                 #region Constructor
  55
  56                 internal PrintingServicesUnix () {
  57                 }
  58
  59                 static PrintingServicesUnix () {
  60                         installed_printers = new Hashtable ();
  61                         CheckCupsInstalled ();
  62                 }
  63
  64                 #endregion
  65
  66                 #region Properties
  67
  68                 internal static PrinterSettings.StringCollection InstalledPrinters {
  69                         get {
  70                                 LoadPrinters();
  71                                 PrinterSettings.StringCollection list = new PrinterSettings.StringCollection (new string[] {});
  72                                 foreach (object key in installed_printers.Keys) {
  73                                         list.Add (key.ToString());
  74                                 }
  75                                 return list;
  76                         }
  77                 }
  78
  79                 internal override string DefaultPrinter {
  80                         get {
  81                                 if (installed_printers.Count == 0)
  82                                         LoadPrinters();
  83                                 return default_printer;
  84                         }
  85                 }
  86
  87                 #endregion
  88
  89
  90                 #region Methods
  91
  92                 /// <summary>
  93                 /// Do a cups call to check if it is installed
  94                 /// </summary>
  95                 private static void CheckCupsInstalled ()
  96                 {
  97                         try {
  98                                 cupsGetDefault ();
  99                         }
 100                         catch (DllNotFoundException) {
 101                                 Console.WriteLine("libcups not found. To have printing support, you need cups installed");
 102                                 cups_installed = false;
 103                                 return;
 104                         }
 105
 106                         cups_installed = true;
 107                 }
 108
 109                 /// <summary>
 110                 /// Open the printer's PPD file
 111                 /// </summary>
 112                 /// <param name="printer">Printer name, returned from cupsGetDests</param>
 113                 private IntPtr OpenPrinter (string printer)
 114                 {
 115                         try {
 116                                 IntPtr ptr = cupsGetPPD (printer);
 117                                 string ppd_filename = Marshal.PtrToStringAnsi (ptr);
 118                                 IntPtr ppd_handle = ppdOpenFile (ppd_filename);
 119                                 return ppd_handle;
 120                         }
 121                         catch (Exception) {
 122                                 Console.WriteLine ("There was an error opening the printer {0}. Please check your cups installation.");
 123                         }
 124                         return IntPtr.Zero;
 125                 }
 126
 127                 /// <summary>
 128                 /// Close the printer file
 129                 /// </summary>
 130                 /// <param name="handle">PPD handle</param>
 131                 private void ClosePrinter (ref IntPtr handle)
 132                 {
 133                         try {
 134                                 if (handle != IntPtr.Zero)
 135                                         ppdClose (handle);
 136                         }
 137                         finally {
 138                                 handle = IntPtr.Zero;
 139                         }
 140                 }
 141
 142                 private static int OpenDests (ref IntPtr ptr) {
 143                         try {
 144                                 return cupsGetDests (ref ptr);
 145                         }
 146                         catch {
 147                                 ptr = IntPtr.Zero;
 148                         }
 149                         return 0;
 150                 }
 151
 152                 private static void CloseDests (ref IntPtr ptr, int count) {
 153                         try {
 154                                 if (ptr != IntPtr.Zero)
 155                                         cupsFreeDests (count, ptr);
 156                         }
 157                         finally {
 158                                 ptr = IntPtr.Zero;
 159                         }
 160                 }
 161
 162                 /// <summary>
 163                 /// Checks if a printer has a valid PPD file. Caches the result unless force is true
 164                 /// </summary>
 165                 /// <param name="force">Does the check disregarding the last cached value if true</param>
 166                 internal override bool IsPrinterValid(string printer)
 167                 {
 168                         if (!cups_installed || printer == null | printer == String.Empty)
 169                                 return false;
 170
 171                         return installed_printers.Contains (printer);
 172 /*
 173                         if (!force && this.printer_name != null && String.Intern(this.printer_name).Equals(printer))
 174                                 return is_printer_valid;
 175
 176                         IntPtr ptr = cupsGetPPD (printer);
 177                         string ppd_filename = Marshal.PtrToStringAnsi (ptr);
 178                         is_printer_valid = ppd_filename != null;
 179                         this.printer_name = printer;
 180                         return is_printer_valid;
 181 */
 182                 }
 183
 184                 /// <summary>
 185                 /// Loads the printer settings and initializes the PrinterSettings and PageSettings fields
 186                 /// </summary>
 187                 /// <param name="printer">Printer name</param>
 188                 /// <param name="settings">PrinterSettings object to initialize</param>
 189                 internal override void LoadPrinterSettings (string printer, PrinterSettings settings)
 190                 {
 191                         if (cups_installed == false || (printer == null) || (printer == String.Empty))
 192                                 return;
 193
 194                         if (installed_printers.Count == 0)
 195                                 LoadPrinters ();
 196
 197                         if (((SysPrn.Printer)installed_printers[printer]).Settings != null) {
 198                                 SysPrn.Printer p = (SysPrn.Printer) installed_printers[printer];
 199                                 settings.can_duplex = p.Settings.can_duplex;
 200                                 settings.is_plotter = p.Settings.is_plotter;
 201                                 settings.landscape_angle = p.Settings.landscape_angle;
 202                                 settings.maximum_copies = p.Settings.maximum_copies;
 203                                 settings.paper_sizes = p.Settings.paper_sizes;
 204                                 settings.paper_sources = p.Settings.paper_sources;
 205                                 settings.printer_capabilities = p.Settings.printer_capabilities;
 206                                 settings.printer_resolutions = p.Settings.printer_resolutions;
 207                                 settings.supports_color = p.Settings.supports_color;
 208                                 return;
 209                         }
 210
 211                         settings.PrinterCapabilities.Clear ();
 212
 213                         IntPtr dests = IntPtr.Zero, ptr = IntPtr.Zero, ptr_printer, ppd_handle = IntPtr.Zero;
 214                         string name = String.Empty;
 215                         CUPS_DESTS printer_dest;
 216                         PPD_FILE ppd;
 217                         int ret = 0, cups_dests_size;
 218                         NameValueCollection options, paper_names, paper_sources;
 219
 220                         try {
 221                                 ret = OpenDests (ref dests);
 222                                 if (ret == 0)
 223                                         return;
 224
 225                                 cups_dests_size = Marshal.SizeOf (typeof(CUPS_DESTS));
 226                                 ptr = dests;
 227                                 for (int i = 0; i < ret; i++) {
 228                                         ptr_printer = (IntPtr) Marshal.ReadIntPtr (ptr);
 229                                         if (Marshal.PtrToStringAnsi (ptr_printer).Equals(printer)) {
 230                                                 name = printer;
 231                                                 break;
 232                                         }
 233                                         ptr = (IntPtr) ((long)ptr + cups_dests_size);
 234                                 }
 235
 236                                 if (!name.Equals(printer)) {
 237                                         return;
 238                                 }
 239
 240                                 ppd_handle = OpenPrinter (printer);
 241                                 if (ppd_handle == IntPtr.Zero)
 242                                         return;
 243
 244                                 printer_dest = (CUPS_DESTS) Marshal.PtrToStructure (ptr, typeof (CUPS_DESTS));
 245                                 options = new NameValueCollection();
 246                                 paper_names = new NameValueCollection();
 247                                 paper_sources = new NameValueCollection();
 248                                 LoadPrinterOptions(printer_dest.options, printer_dest.num_options, ppd_handle, options, paper_names, paper_sources);
 249
 250                                 if (settings.paper_sizes == null)
 251                                         settings.paper_sizes = new PrinterSettings.PaperSizeCollection (new PaperSize [] {});
 252                                 else
 253                                         settings.paper_sizes.Clear();
 254
 255                                 if (settings.paper_sources == null)
 256                                         settings.paper_sources = new PrinterSettings.PaperSourceCollection (new PaperSource [] {});
 257                                 else
 258                                         settings.paper_sources.Clear();
 259
 260                                 string defsource = options["InputSlot"];
 261                                 string defsize = options["PageSize"];
 262
 263                                 settings.DefaultPageSettings.PaperSource = LoadPrinterPaperSources (settings, defsource, paper_sources);
 264                                 settings.DefaultPageSettings.PaperSize = LoadPrinterPaperSizes (ppd_handle, settings, defsize, paper_names);
 265
 266                                 ppd = (PPD_FILE) Marshal.PtrToStructure (ppd_handle, typeof (PPD_FILE));
 267                                 settings.landscape_angle = ppd.landscape;
 268                                 settings.supports_color = (ppd.color_device == 0) ? false : true;
 269                                 settings.can_duplex = options["Duplex"] != null;
 270
 271                                 ClosePrinter (ref ppd_handle);
 272
 273                                 ((SysPrn.Printer)installed_printers[printer]).Settings = settings;
 274                         }
 275                         finally {
 276                                 CloseDests (ref dests, ret);
 277                         }
 278                 }
 279
 280                 /// <summary>
 281                 /// Loads the global options of a printer plus the paper types and trays supported.
 282                 /// </summary>
 283                 /// <param name="options">The options field of a printer's CUPS_DESTS structure</param>
 284                 /// <param name="numOptions">The number of options of the printer</param>
 285                 /// <param name="ppd">A ppd handle for the printer, returned by ppdOpen</param>
 286                 /// <param name="list">The list of options</param>
 287                 /// <param name="paper_names">A list of types of paper (PageSize)</param>
 288                 /// <param name="paper_sources">A list of trays(InputSlot) </param>
 289                 private static void LoadPrinterOptions(IntPtr options, int numOptions, IntPtr ppd,
 290                                                                                  NameValueCollection list,
 291                                                                                  NameValueCollection paper_names,
 292                                                                                  NameValueCollection paper_sources)
 293                 {
 294                         CUPS_OPTIONS cups_options;
 295                         string option_name, option_value;
 296                         int cups_size = Marshal.SizeOf(typeof(CUPS_OPTIONS));
 297
 298                         for (int j = 0; j < numOptions; j++)
 299                         {
 300                                 cups_options = (CUPS_OPTIONS) Marshal.PtrToStructure(options, typeof(CUPS_OPTIONS));
 301                                 option_name = Marshal.PtrToStringAnsi(cups_options.name);
 302                                 option_value = Marshal.PtrToStringAnsi(cups_options.val);
 303
 304                                 #if PrintDebug
 305                                 Console.WriteLine("{0} = {1}", option_name, option_value);
 306                                 #endif
 307
 308                                 list.Add(option_name, option_value);
 309
 310                                 options = (IntPtr) ((long)options + cups_size);
 311                         }
 312
 313                         LoadOptionList (ppd, "PageSize", paper_names);
 314                         LoadOptionList (ppd, "InputSlot", paper_sources);
 315                 }
 316
 317                 /// <summary>
 318                 /// Loads the global options of a printer.
 319                 /// </summary>
 320                 /// <param name="options">The options field of a printer's CUPS_DESTS structure</param>
 321                 /// <param name="numOptions">The number of options of the printer</param>
 322                 private static NameValueCollection LoadPrinterOptions(IntPtr options, int numOptions)
 323                 {
 324                         CUPS_OPTIONS cups_options;
 325                         string option_name, option_value;
 326                         int cups_size = Marshal.SizeOf (typeof(CUPS_OPTIONS));
 327                         NameValueCollection list = new NameValueCollection ();
 328                         for (int j = 0; j < numOptions; j++)
 329                         {
 330                                 cups_options = (CUPS_OPTIONS) Marshal.PtrToStructure(options, typeof(CUPS_OPTIONS));
 331                                 option_name = Marshal.PtrToStringAnsi (cups_options.name);
 332                                 option_value = Marshal.PtrToStringAnsi (cups_options.val);
 333
 334                                 #if PrintDebug
 335                                 Console.WriteLine("{0} = {1}", option_name, option_value);
 336                                 #endif
 337
 338                                 list.Add (option_name, option_value);
 339
 340                                 options = (IntPtr) ((long)options + cups_size);
 341                         }
 342                         return list;
 343                 }
 344
 345                 /// <summary>
 346                 /// Loads a printer's options (selection of paper sizes, paper sources, etc)
 347                 /// </summary>
 348                 /// <param name="ppd">Printer ppd file handle</param>
 349                 /// <param name="option_name">Name of the option group to load</param>
 350                 /// <param name="list">List of loaded options</param>
 351                 private static void LoadOptionList(IntPtr ppd, string option_name, NameValueCollection list) {
 352
 353                         IntPtr ptr = IntPtr.Zero;
 354                         PPD_OPTION ppd_option;
 355                         PPD_CHOICE choice;
 356                         int choice_size = Marshal.SizeOf(typeof(PPD_CHOICE));
 357
 358                         ptr = ppdFindOption (ppd, option_name);
 359                         if (ptr != IntPtr.Zero)
 360                         {
 361                                 ppd_option = (PPD_OPTION) Marshal.PtrToStructure (ptr, typeof (PPD_OPTION));
 362                                 #if PrintDebug
 363                                 Console.WriteLine (" OPTION  key:{0} def:{1} text: {2}", ppd_option.keyword, ppd_option.defchoice, ppd_option.text);
 364                                 #endif
 365
 366                                 ptr = ppd_option.choices;
 367                                 for (int c = 0; c < ppd_option.num_choices; c++) {
 368                                         choice = (PPD_CHOICE) Marshal.PtrToStructure (ptr, typeof (PPD_CHOICE));
 369                                         list.Add(choice.choice, choice.text);
 370                                         #if PrintDebug
 371                                         Console.WriteLine ("       choice:{0} - text: {1}", choice.choice, choice.text);
 372                                         #endif
 373
 374                                         ptr = (IntPtr) ((long)ptr + choice_size);
 375                                 }
 376                         }
 377                 }
 378
 379                 /// <summary>
 380                 /// Loads a printer's available resolutions
 381                 /// </summary>
 382                 /// <param name="printer">Printer name</param>
 383                 /// <param name="settings">PrinterSettings object to fill</param>
 384                 internal override void LoadPrinterResolutions (string printer, PrinterSettings settings)
 385                 {
 386                         settings.PrinterResolutions.Clear ();
 387                         LoadDefaultResolutions (settings.PrinterResolutions);
 388                 }
 389
 390                 /// <summary>
 391                 /// Loads a printer's paper sizes. Returns the default PaperSize, and fills a list of paper_names for use in dialogues
 392                 /// </summary>
 393                 /// <param name="ppd_handle">PPD printer file handle</param>
 394                 /// <param name="settings">PrinterSettings object to fill</param>
 395                 /// <param name="def_size">Default paper size, from the global options of the printer</param>
 396                 /// <param name="paper_names">List of available paper sizes that gets filled</param>
 397                 private PaperSize LoadPrinterPaperSizes(IntPtr ppd_handle, PrinterSettings settings,
 398                                                                                                 string def_size, NameValueCollection paper_names)
 399                 {
 400                         IntPtr ptr;
 401                         string real_name;
 402                         PPD_FILE ppd;
 403                         PPD_SIZE size;
 404                         PaperSize ps;
 405
 406                         PaperSize defsize = null;
 407                         ppd = (PPD_FILE) Marshal.PtrToStructure (ppd_handle, typeof (PPD_FILE));
 408                         ptr = ppd.sizes;
 409                         float w, h;
 410                         for (int i = 0; i < ppd.num_sizes; i++) {
 411                                 size = (PPD_SIZE) Marshal.PtrToStructure (ptr, typeof (PPD_SIZE));
 412                                 real_name = paper_names[size.name];
 413                                 w = size.width * 100 / 72;
 414                                 h = size.length * 100 / 72;
 415                                 ps = new PaperSize (real_name, (int) w, (int) h, GetPaperKind ((int) w, (int) h), def_size == real_name);
 416                                 if (def_size == real_name)
 417                                         defsize = ps;
 418                                 ps.SetKind (GetPaperKind ((int) w, (int) h));
 419                                 settings.paper_sizes.Add (ps);
 420                                 ptr = (IntPtr) ((long)ptr + Marshal.SizeOf (size));
 421                         }
 422
 423                         return defsize;
 424
 425                 }
 426
 427                 /// <summary>
 428                 /// Loads a printer's paper sources (trays). Returns the default PaperSource, and fills a list of paper_sources for use in dialogues
 429                 /// </summary>
 430                 /// <param name="settings">PrinterSettings object to fill</param>
 431                 /// <param name="def_source">Default paper source, from the global options of the printer</param>
 432                 /// <param name="paper_sources">List of available paper sizes that gets filled</param>
 433                 private PaperSource LoadPrinterPaperSources (PrinterSettings settings, string def_source,
 434                                                                                                         NameValueCollection paper_sources)
 435                 {
 436                         PaperSourceKind kind;
 437                         PaperSource defsource = null;
 438                         foreach(string source in paper_sources) {
 439                                 switch (source)
 440                                 {
 441                                         case "Tray":
 442                                                 kind = PaperSourceKind.AutomaticFeed;
 443                                                 break;
 444                                         case "Envelope":
 445                                                 kind = PaperSourceKind.Envelope;
 446                                                 break;
 447                                         case "Manual":
 448                                                 kind = PaperSourceKind.Manual;
 449                                                 break;
 450                                         default:
 451                                                 kind = PaperSourceKind.Custom;
 452                                                 break;
 453                                 }
 454                                 settings.paper_sources.Add (new PaperSource (paper_sources[source], kind, def_source == source));
 455                                 if (def_source == source)
 456                                         defsource = settings.paper_sources[settings.paper_sources.Count-1];
 457                         }
 458
 459                         if (defsource == null && settings.paper_sources.Count > 0)
 460                                 return settings.paper_sources[0];
 461                         return defsource;
 462                 }
 463
 464                 /// <summary>
 465                 /// </summary>
 466                 /// <param name="load"></param>
 467                 /// <param name="def_printer"></param>
 468                 private static void LoadPrinters()
 469                 {
 470                         installed_printers.Clear ();
 471                         if (cups_installed == false)
 472                                 return;
 473
 474                         IntPtr dests = IntPtr.Zero, ptr_printers;
 475                         CUPS_DESTS printer;
 476                         int n_printers = 0;
 477                         int cups_dests_size = Marshal.SizeOf(typeof(CUPS_DESTS));
 478                         string name, first, type, status, comment;
 479                         first = type = status = comment = String.Empty;
 480                         int state = 0;
 481
 482                         try {
 483                                 n_printers = OpenDests (ref dests);
 484
 485                                 ptr_printers = dests;
 486                                 for (int i = 0; i < n_printers; i++) {
 487                                         printer = (CUPS_DESTS) Marshal.PtrToStructure (ptr_printers, typeof (CUPS_DESTS));
 488                                         name = Marshal.PtrToStringAnsi (printer.name);
 489
 490                                         if (printer.is_default == 1)
 491                                                 default_printer = name;
 492
 493                                         if (first.Equals (String.Empty))
 494                                                 first = name;
 495
 496                                         NameValueCollection options = LoadPrinterOptions(printer.options, printer.num_options);
 497
 498                                         if (options["printer-state"] != null)
 499                                                 state = Int32.Parse(options["printer-state"]);
 500
 501                                         if (options["printer-comment"] != null)
 502                                                 comment = options["printer-state"];
 503
 504                                         switch(state) {
 505                                                 case 4:
 506                                                         status = "Printing";
 507                                                         break;
 508                                                 case 5:
 509                                                         status = "Stopped";
 510                                                         break;
 511                                                 default:
 512                                                         status =  "Ready";
 513                                                         break;
 514                                         }
 515
 516                                         installed_printers.Add (name, new SysPrn.Printer (String.Empty, type, status, comment));
 517
 518                                         ptr_printers = (IntPtr) ((long)ptr_printers + cups_dests_size);
 519                                 }
 520
 521                         }
 522                         finally {
 523                                 CloseDests (ref dests, n_printers);
 524                         }
 525
 526                         if (default_printer.Equals (String.Empty))
 527                                 default_printer = first;
 528                 }
 529
 530                 /// <summary>
 531                 /// Gets a printer's settings for use in the print dialogue
 532                 /// </summary>
 533                 /// <param name="printer"></param>
 534                 /// <param name="port"></param>
 535                 /// <param name="type"></param>
 536                 /// <param name="status"></param>
 537                 /// <param name="comment"></param>
 538                 internal override void GetPrintDialogInfo (string printer, ref string port, ref string type, ref string status, ref string comment) {
 539                         int count = 0, state = -1;
 540                         bool found = false;
 541                         CUPS_DESTS cups_dests;
 542                         IntPtr dests = IntPtr.Zero, ptr_printers, ptr_printer;
 543                         int cups_dests_size = Marshal.SizeOf(typeof(CUPS_DESTS));
 544
 545                         if (cups_installed == false)
 546                                 return;
 547
 548                         try {
 549                                 count = OpenDests (ref dests);
 550
 551                                 if (count == 0)
 552                                         return;
 553
 554                                 ptr_printers = dests;
 555
 556                                 for (int i = 0; i < count; i++) {
 557                                         ptr_printer = (IntPtr) Marshal.ReadIntPtr (ptr_printers);
 558                                         if (Marshal.PtrToStringAnsi (ptr_printer).Equals(printer)) {
 559                                                 found = true;
 560                                                 break;
 561                                         }
 562                                         ptr_printers = (IntPtr) ((long)ptr_printers + cups_dests_size);
 563                                 }
 564
 565                                 if (!found)
 566                                         return;
 567
 568                                 cups_dests = (CUPS_DESTS) Marshal.PtrToStructure (ptr_printers, typeof (CUPS_DESTS));
 569
 570                                 NameValueCollection options = LoadPrinterOptions(cups_dests.options, cups_dests.num_options);
 571
 572                                 if (options["printer-state"] != null)
 573                                         state = Int32.Parse(options["printer-state"]);
 574
 575                                 if (options["printer-comment"] != null)
 576                                         comment = options["printer-state"];
 577
 578                                 switch(state) {
 579                                         case 4:
 580                                                 status = "Printing";
 581                                                 break;
 582                                         case 5:
 583                                                 status = "Stopped";
 584                                                 break;
 585                                         default:
 586                                                 status =  "Ready";
 587                                                 break;
 588                                 }
 589                         }
 590                         finally {
 591                                 CloseDests (ref dests, count);
 592                         }
 593                 }
 594
 595                 /// <summary>
 596                 /// Returns the appropriate PaperKind for the width and height
 597                 /// </summary>
 598                 /// <param name="width"></param>
 599                 /// <param name="height"></param>
 600                 private PaperKind GetPaperKind (int width, int height)
 601                 {
 602                         if (width == 827 && height == 1169)
 603                                 return PaperKind.A4;
 604                         if (width == 583 && height == 827)
 605                                 return PaperKind.A5;
 606                         if (width == 717 && height == 1012)
 607                                 return PaperKind.B5;
 608                         if (width == 693 && height == 984)
 609                                 return PaperKind.B5Envelope;
 610                         if (width == 638 && height == 902)
 611                                 return PaperKind.C5Envelope;
 612                         if (width == 449 && height == 638)
 613                                 return PaperKind.C6Envelope;
 614                         if (width == 1700 && height == 2200)
 615                                 return PaperKind.CSheet;
 616                         if (width == 433 && height == 866)
 617                                 return PaperKind.DLEnvelope;
 618                         if (width == 2200 && height == 3400)
 619                                 return PaperKind.DSheet;
 620                         if (width == 3400 && height == 4400)
 621                                 return PaperKind.ESheet;
 622                         if (width == 725 && height == 1050)
 623                                 return PaperKind.Executive;
 624                         if (width == 850 && height == 1300)
 625                                 return PaperKind.Folio;
 626                         if (width == 850 && height == 1200)
 627                                 return PaperKind.GermanStandardFanfold;
 628                         if (width == 1700 && height == 1100)
 629                                 return PaperKind.Ledger;
 630                         if (width == 850 && height == 1400)
 631                                 return PaperKind.Legal;
 632                         if (width == 927 && height == 1500)
 633                                 return PaperKind.LegalExtra;
 634                         if (width == 850 && height == 1100)
 635                                 return PaperKind.Letter;
 636                         if (width == 927 && height == 1200)
 637                                 return PaperKind.LetterExtra;
 638                         if (width == 850 && height == 1269)
 639                                 return PaperKind.LetterPlus;
 640                         if (width == 387 && height == 750)
 641                                 return PaperKind.MonarchEnvelope;
 642                         if (width == 387 && height == 887)
 643                                 return PaperKind.Number9Envelope;
 644                         if (width == 413 && height == 950)
 645                                 return PaperKind.Number10Envelope;
 646                         if (width == 450 && height == 1037)
 647                                 return PaperKind.Number11Envelope;
 648                         if (width == 475 && height == 1100)
 649                                 return PaperKind.Number12Envelope;
 650                         if (width == 500 && height == 1150)
 651                                 return PaperKind.Number14Envelope;
 652                         if (width == 363 && height == 650)
 653                                 return PaperKind.PersonalEnvelope;
 654                         if (width == 1000 && height == 1100)
 655                                 return PaperKind.Standard10x11;
 656                         if (width == 1000 && height == 1400)
 657                                 return PaperKind.Standard10x14;
 658                         if (width == 1100 && height == 1700)
 659                                 return PaperKind.Standard11x17;
 660                         if (width == 1200 && height == 1100)
 661                                 return PaperKind.Standard12x11;
 662                         if (width == 1500 && height == 1100)
 663                                 return PaperKind.Standard15x11;
 664                         if (width == 900 && height == 1100)
 665                                 return PaperKind.Standard9x11;
 666                         if (width == 550 && height == 850)
 667                                 return PaperKind.Statement;
 668                         if (width == 1100 && height == 1700)
 669                                 return PaperKind.Tabloid;
 670                         if (width == 1487 && height == 1100)
 671                                 return PaperKind.USStandardFanfold;
 672
 673                         return PaperKind.Custom;
 674                 }
 675
 676                 #endregion
 677
 678                 #region Print job methods
 679
 680                 static string tmpfile;
 681
 682                 /// <summary>
 683                 /// Gets a pointer to an options list parsed from the printer's current settings, to use when setting up the printing job
 684                 /// </summary>
 685                 /// <param name="printer_settings"></param>
 686                 /// <param name="page_settings"></param>
 687                 /// <param name="options"></param>
 688                 internal static int GetCupsOptions (PrinterSettings printer_settings, PageSettings page_settings, out IntPtr options)
 689                 {
 690                         options = IntPtr.Zero;
 691
 692                         PaperSize size = page_settings.PaperSize;
 693                         int width = size.Width * 72 / 100;
 694                         int height = size.Height * 72 / 100;
 695
 696                         StringBuilder sb = new StringBuilder();
 697                         sb.Append(
 698                                 "copies=" + printer_settings.Copies + " " +
 699                                 "Collate=" + printer_settings.Collate + " " +
 700                                 "ColorModel=" + (page_settings.Color ? "Color" : "Black") + " " +
 701                                 "PageSize=" + String.Format ("Custom.{0}x{1}", width, height) + " " +
 702                                 "landscape=" + page_settings.Landscape
 703                         );
 704
 705                         if (printer_settings.CanDuplex)
 706                         {
 707                                 if (printer_settings.Duplex == Duplex.Simplex)
 708                                         sb.Append(" Duplex=None");
 709                                 else
 710                                         sb.Append(" Duplex=DuplexNoTumble");
 711                         }
 712
 713                         return cupsParseOptions (sb.ToString(), 0, ref options);
 714                 }
 715
 716                 internal static bool StartDoc (GraphicsPrinter gr, string doc_name, string output_file)
 717                 {
 718                         DOCINFO doc = (DOCINFO) doc_info[gr.Hdc];
 719                         doc.title = doc_name;
 720                         return true;
 721                 }
 722
 723                 internal static bool EndDoc (GraphicsPrinter gr)
 724                 {
 725                         DOCINFO doc = (DOCINFO) doc_info[gr.Hdc];
 726
 727                         gr.Graphics.Dispose (); // Dispose object to force surface finish
 728
 729                         IntPtr options;
 730                         int options_count = GetCupsOptions (doc.settings, doc.default_page_settings, out options);
 731
 732                         cupsPrintFile (doc.settings.PrinterName, doc.filename, doc.title, options_count, options);
 733                         cupsFreeOptions (options_count, options);
 734                         doc_info.Remove (gr.Hdc);
 735                         if (tmpfile != null) {
 736                                 try { File.Delete (tmpfile); }
 737                                 catch { }
 738                         }
 739                         return true;
 740                 }
 741
 742                 internal static bool StartPage (GraphicsPrinter gr)
 743                 {
 744                         return true;
 745                 }
 746
 747                 internal static bool EndPage (GraphicsPrinter gr)
 748                 {
 749                         GdipGetPostScriptSavePage (gr.Hdc);
 750                         return true;
 751                 }
 752
 753                 // Unfortunately, PrinterSettings and PageSettings couldn't be referencing each other,
 754                 // thus we need to pass them separately
 755                 internal static IntPtr CreateGraphicsContext (PrinterSettings settings, PageSettings default_page_settings)
 756                 {
 757                         IntPtr graphics = IntPtr.Zero;
 758                         string name;
 759                         if (!settings.PrintToFile) {
 760                                 StringBuilder sb = new StringBuilder (1024);
 761                                 int length = sb.Capacity;
 762                                 cupsTempFile (sb, length);
 763                                 name = sb.ToString ();
 764                                 tmpfile = name;
 765                         }
 766                         else
 767                                 name = settings.PrintFileName;
 768
 769                         PaperSize psize = default_page_settings.PaperSize;
 770                         int width, height;
 771                         if (default_page_settings.Landscape) { // Swap in case of landscape
 772                                 width = psize.Height;
 773                                 height = psize.Width;
 774                         } else {
 775                                 width = psize.Width;
 776                                 height = psize.Height;
 777                         }
 778
 779                         GdipGetPostScriptGraphicsContext (name,
 780                                 width * 72 / 100,
 781                                 height * 72 / 100,
 782                                 default_page_settings.PrinterResolution.X,
 783                                 default_page_settings.PrinterResolution.Y, ref graphics);
 784
 785                         DOCINFO doc = new DOCINFO ();
 786                         doc.filename = name;
 787                         doc.settings = settings;
 788                         doc.default_page_settings = default_page_settings;
 789                         doc_info.Add (graphics, doc);
 790
 791                         return graphics;
 792                 }
 793
 794                 #endregion
 795
 796                 #region DllImports
 797
 798                 [DllImport("libcups", CharSet=CharSet.Ansi)]
 799                 static extern int cupsGetDests (ref IntPtr dests);
 800
 801 //              [DllImport("libcups", CharSet=CharSet.Ansi)]
 802 //              static extern void cupsGetDest (string name, string instance, int num_dests, ref IntPtr dests);
 803
 804                 [DllImport("libcups")]
 805                 static extern void cupsFreeDests (int num_dests, IntPtr dests);
 806
 807                 [DllImport("libcups", CharSet=CharSet.Ansi)]
 808                 static extern IntPtr cupsTempFile (StringBuilder sb, int len);
 809
 810                 [DllImport("libcups", CharSet=CharSet.Ansi)]
 811                 static extern IntPtr cupsGetDefault ();
 812
 813                 [DllImport("libcups", CharSet=CharSet.Ansi)]
 814                 static extern int cupsPrintFile (string printer, string filename, string title, int num_options, IntPtr options);
 815
 816                 [DllImport("libcups", CharSet=CharSet.Ansi)]
 817                 static extern IntPtr cupsGetPPD (string printer);
 818
 819                 [DllImport("libcups", CharSet=CharSet.Ansi)]
 820                 static extern IntPtr ppdOpenFile (string filename);
 821
 822                 [DllImport("libcups", CharSet=CharSet.Ansi)]
 823                 static extern IntPtr ppdFindOption (IntPtr ppd_file, string keyword);
 824
 825                 [DllImport("libcups")]
 826                 static extern void ppdClose (IntPtr ppd);
 827
 828                 [DllImport ("libcups", CharSet=CharSet.Ansi)]
 829                 static extern int cupsParseOptions (string arg, int number_of_options, ref IntPtr options);
 830
 831                 [DllImport("libcups")]
 832                 static extern void cupsFreeOptions (int number_options, IntPtr options);
 833
 834                 [DllImport("gdiplus.dll", CharSet=CharSet.Ansi)]
 835                 static extern int GdipGetPostScriptGraphicsContext (string filename, int with, int height, double dpix, double dpiy, ref IntPtr graphics);
 836
 837                 [DllImport("gdiplus.dll")]
 838                 static extern int GdipGetPostScriptSavePage (IntPtr graphics);
 839
 840                 #endregion
 841
 842                 #region Struct
 843                 public struct DOCINFO
 844                 {
 845                         public PrinterSettings settings;
 846                         public PageSettings default_page_settings;
 847                         public string title;
 848                         public string filename;
 849                 }
 850
 851                 public struct PPD_SIZE
 852                 {
 853                         public  int marked;
 854                         [MarshalAs(UnmanagedType.ByValTStr, SizeConst=42)]
 855                         public  string name;
 856                         public  float width;
 857                         public  float length;
 858                         public  float left;
 859                         public  float bottom;
 860                         public  float right;
 861                         public  float top;
 862                 }
 863
 864                 public struct PPD_GROUP
 865                 {
 866                         [MarshalAs(UnmanagedType.ByValTStr, SizeConst=40)]
 867                         public string text;
 868                         [MarshalAs(UnmanagedType.ByValTStr, SizeConst=42)]
 869                         public string name;
 870                         public int num_options;
 871                         public IntPtr options;
 872                         public int num_subgroups;
 873                         public IntPtr subgrups;
 874                 }
 875
 876                 public struct PPD_OPTION
 877                 {
 878                         public byte     conflicted;
 879                         [MarshalAs(UnmanagedType.ByValTStr, SizeConst=41)]
 880                         public string   keyword;
 881                         [MarshalAs(UnmanagedType.ByValTStr, SizeConst=41)]
 882                         public string   defchoice;
 883                         [MarshalAs(UnmanagedType.ByValTStr, SizeConst=81)]
 884                         public string   text;
 885                         public int      ui;
 886                         public int      section;
 887                         public float    order;
 888                         public int      num_choices;
 889                         public IntPtr   choices;
 890                 }
 891
 892                 public struct PPD_CHOICE
 893                 {
 894                         public byte     marked;
 895                         [MarshalAs(UnmanagedType.ByValTStr, SizeConst=41)]
 896                         public string   choice;
 897                         [MarshalAs(UnmanagedType.ByValTStr, SizeConst=81)]
 898                         public string   text;
 899                         public IntPtr   code;
 900                         public IntPtr   option;
 901                 }
 902
 903                 public struct PPD_FILE
 904                 {
 905                         public int      language_level;
 906                         public int      color_device;
 907                         public int      variable_sizes;
 908                         public int      accurate_screens;
 909                         public int      contone_only;
 910                         public int      landscape;
 911                         public int      model_number;
 912                         public int      manual_copies;
 913                         public int      throughput;
 914                         public int      colorspace;
 915                         public IntPtr   patches;
 916                         public int      num_emulations;
 917                         public IntPtr   emulations;
 918                         public IntPtr   jcl_begin;
 919                         public IntPtr   jcl_ps;
 920                         public IntPtr   jcl_end;
 921                         public IntPtr   lang_encoding;
 922                         public IntPtr   lang_version;
 923                         public IntPtr   modelname;
 924                         public IntPtr   ttrasterizer;
 925                         public IntPtr   manufacturer;
 926                         public IntPtr   product;
 927                         public IntPtr   nickname;
 928                         public IntPtr   shortnickname;
 929                         public int      num_groups;
 930                         public IntPtr   groups;
 931                         public int      num_sizes;
 932                         public IntPtr   sizes;
 933
 934                         /* There is more data after this that we are not using*/
 935                 }
 936
 937
 938                 public struct CUPS_OPTIONS
 939                 {
 940                         public IntPtr name;
 941                         public IntPtr val;
 942                 }
 943
 944                 public struct CUPS_DESTS
 945                 {
 946                         public IntPtr   name;
 947                         public IntPtr   instance;
 948                         public int      is_default;
 949                         public int      num_options;
 950                         public IntPtr   options;
 951                 }
 952
 953                 #endregion
 954         }
 955
 956         class GlobalPrintingServicesUnix : GlobalPrintingServices
 957         {
 958                 internal override PrinterSettings.StringCollection InstalledPrinters {
 959                         get {
 960                                 return PrintingServicesUnix.InstalledPrinters;
 961                         }
 962                 }
 963
 964                 internal override IntPtr CreateGraphicsContext (PrinterSettings settings, PageSettings default_page_settings)
 965                 {
 966                         return PrintingServicesUnix.CreateGraphicsContext (settings, default_page_settings);
 967                 }
 968
 969                 internal override bool StartDoc (GraphicsPrinter gr, string doc_name, string output_file)
 970                 {
 971                         return PrintingServicesUnix.StartDoc (gr, doc_name, output_file);
 972                 }
 973
 974                 internal override bool EndDoc (GraphicsPrinter gr)
 975                 {
 976                         return PrintingServicesUnix.EndDoc (gr);
 977                 }
 978
 979                 internal override bool StartPage (GraphicsPrinter gr)
 980                 {
 981                         return PrintingServicesUnix.StartPage (gr);
 982                 }
 983
 984                 internal override bool EndPage (GraphicsPrinter gr)
 985                 {
 986                         return PrintingServicesUnix.EndPage (gr);
 987                 }
 988         }
 989 }
 990