//#define PrintDebug
//
// Copyright (C) 2005, 2007 Novell, Inc. http://www.novell.com
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Author:
//
// Jordi Mas i Hernandez, jordimash@gmail.com
//
using System.Runtime.InteropServices;
using System.Collections;
using System.Collections.Specialized;
using System.Drawing.Printing;
using System.ComponentModel;
using System.Drawing.Imaging;
using System.Text;
using System.IO;
namespace System.Drawing.Printing{
internal class PrintingServicesUnix : PrintingServices
{
#region Private Fields
private static Hashtable doc_info = new Hashtable ();
private static bool cups_installed;
//private string printer_name;
private static Hashtable installed_printers;
private static string default_printer = String.Empty;
#endregion
#region Constructor
internal PrintingServicesUnix () {
}
static PrintingServicesUnix () {
installed_printers = new Hashtable ();
CheckCupsInstalled ();
}
#endregion
#region Properties
internal static PrinterSettings.StringCollection InstalledPrinters {
get {
LoadPrinters();
PrinterSettings.StringCollection list = new PrinterSettings.StringCollection (new string[] {});
foreach (object key in installed_printers.Keys) {
list.Add (key.ToString());
}
return list;
}
}
internal override string DefaultPrinter {
get {
if (installed_printers.Count == 0)
LoadPrinters();
return default_printer;
}
}
#endregion
#region Methods
/// <summary>
/// Do a cups call to check if it is installed
/// </summary>
private static void CheckCupsInstalled ()
{
try {
cupsGetDefault ();
}
catch (DllNotFoundException) {
Console.WriteLine("libcups not found. To have printing support, you need cups installed");
cups_installed = false;
return;
}
cups_installed = true;
}
/// <summary>
/// Open the printer's PPD file
/// </summary>
/// <param name="printer">Printer name, returned from cupsGetDests</param>
private IntPtr OpenPrinter (string printer)
{
try {
IntPtr ptr = cupsGetPPD (printer);
string ppd_filename = Marshal.PtrToStringAnsi (ptr);
IntPtr ppd_handle = ppdOpenFile (ppd_filename);
return ppd_handle;
}
catch (Exception) {
Console.WriteLine ("There was an error opening the printer {0}. Please check your cups installation.");
}
return IntPtr.Zero;
}
/// <summary>
/// Close the printer file
/// </summary>
/// <param name="handle">PPD handle</param>
private void ClosePrinter (ref IntPtr handle)
{
try {
if (handle != IntPtr.Zero)
ppdClose (handle);
}
finally {
handle = IntPtr.Zero;
}
}
private static int OpenDests (ref IntPtr ptr) {
try {
return cupsGetDests (ref ptr);
}
catch {
ptr = IntPtr.Zero;
}
return 0;
}
private static void CloseDests (ref IntPtr ptr, int count) {
try {
if (ptr != IntPtr.Zero)
cupsFreeDests (count, ptr);
}
finally {
ptr = IntPtr.Zero;
}
}
/// <summary>
/// Checks if a printer has a valid PPD file. Caches the result unless force is true
/// </summary>
/// <param name="force">Does the check disregarding the last cached value if true</param>
internal override bool IsPrinterValid(string printer)
{
if (!cups_installed || printer == null | printer == String.Empty)
return false;
return installed_printers.Contains (printer);
/*
if (!force && this.printer_name != null && String.Intern(this.printer_name).Equals(printer))
return is_printer_valid;
IntPtr ptr = cupsGetPPD (printer);
string ppd_filename = Marshal.PtrToStringAnsi (ptr);
is_printer_valid = ppd_filename != null;
this.printer_name = printer;
return is_printer_valid;
*/
}
/// <summary>
/// Loads the printer settings and initializes the PrinterSettings and PageSettings fields
/// </summary>
/// <param name="printer">Printer name</param>
/// <param name="settings">PrinterSettings object to initialize</param>
internal override void LoadPrinterSettings (string printer, PrinterSettings settings)
{
if (cups_installed == false || (printer == null) || (printer == String.Empty))
return;
if (installed_printers.Count == 0)
LoadPrinters ();
if (((SysPrn.Printer)installed_printers[printer]).Settings != null) {
SysPrn.Printer p = (SysPrn.Printer) installed_printers[printer];
settings.can_duplex = p.Settings.can_duplex;
settings.is_plotter = p.Settings.is_plotter;
settings.landscape_angle = p.Settings.landscape_angle;
settings.maximum_copies = p.Settings.maximum_copies;
settings.paper_sizes = p.Settings.paper_sizes;
settings.paper_sources = p.Settings.paper_sources;
settings.printer_capabilities = p.Settings.printer_capabilities;
settings.printer_resolutions = p.Settings.printer_resolutions;
settings.supports_color = p.Settings.supports_color;
return;
}
settings.PrinterCapabilities.Clear ();
IntPtr dests = IntPtr.Zero, ptr = IntPtr.Zero, ptr_printer, ppd_handle = IntPtr.Zero;
string name = String.Empty;
CUPS_DESTS printer_dest;
PPD_FILE ppd;
int ret = 0, cups_dests_size;
NameValueCollection options, paper_names, paper_sources;
try {
ret = OpenDests (ref dests);
if (ret == 0)
return;
cups_dests_size = Marshal.SizeOf (typeof(CUPS_DESTS));
ptr = dests;
for (int i = 0; i < ret; i++) {
ptr_printer = (IntPtr) Marshal.ReadIntPtr (ptr);
if (Marshal.PtrToStringAnsi (ptr_printer).Equals(printer)) {
name = printer;
break;
}
ptr = (IntPtr) ((long)ptr + cups_dests_size);
}
if (!name.Equals(printer)) {
return;
}
ppd_handle = OpenPrinter (printer);
if (ppd_handle == IntPtr.Zero)
return;
printer_dest = (CUPS_DESTS) Marshal.PtrToStructure (ptr, typeof (CUPS_DESTS));
options = new NameValueCollection();
paper_names = new NameValueCollection();
paper_sources = new NameValueCollection();
LoadPrinterOptions(printer_dest.options, printer_dest.num_options, ppd_handle, options, paper_names, paper_sources);
if (settings.paper_sizes == null)
settings.paper_sizes = new PrinterSettings.PaperSizeCollection (new PaperSize [] {});
else
settings.paper_sizes.Clear();
if (settings.paper_sources == null)
settings.paper_sources = new PrinterSettings.PaperSourceCollection (new PaperSource [] {});
else
settings.paper_sources.Clear();
string defsource = options["InputSlot"];
string defsize = options["PageSize"];
settings.DefaultPageSettings.PaperSource = LoadPrinterPaperSources (settings, defsource, paper_sources);
settings.DefaultPageSettings.PaperSize = LoadPrinterPaperSizes (ppd_handle, settings, defsize, paper_names);
ppd = (PPD_FILE) Marshal.PtrToStructure (ppd_handle, typeof (PPD_FILE));
settings.landscape_angle = ppd.landscape;
settings.supports_color = (ppd.color_device == 0) ? false : true;
settings.can_duplex = options["Duplex"] != null;
ClosePrinter (ref ppd_handle);
((SysPrn.Printer)installed_printers[printer]).Settings = settings;
}
finally {
CloseDests (ref dests, ret);
}
}
/// <summary>
/// Loads the global options of a printer plus the paper types and trays supported.
/// </summary>
/// <param name="options">The options field of a printer's CUPS_DESTS structure</param>
/// <param name="numOptions">The number of options of the printer</param>
/// <param name="ppd">A ppd handle for the printer, returned by ppdOpen</param>
/// <param name="list">The list of options</param>
/// <param name="paper_names">A list of types of paper (PageSize)</param>
/// <param name="paper_sources">A list of trays(InputSlot) </param>
private static void LoadPrinterOptions(IntPtr options, int numOptions, IntPtr ppd,
NameValueCollection list,
NameValueCollection paper_names,
NameValueCollection paper_sources)
{
CUPS_OPTIONS cups_options;
string option_name, option_value;
int cups_size = Marshal.SizeOf(typeof(CUPS_OPTIONS));
for (int j = 0; j < numOptions; j++)
{
cups_options = (CUPS_OPTIONS) Marshal.PtrToStructure(options, typeof(CUPS_OPTIONS));
option_name = Marshal.PtrToStringAnsi(cups_options.name);
option_value = Marshal.PtrToStringAnsi(cups_options.val);
#if PrintDebug
Console.WriteLine("{0} = {1}", option_name, option_value);
#endif
list.Add(option_name, option_value);
options = (IntPtr) ((long)options + cups_size);
}
LoadOptionList (ppd, "PageSize", paper_names);
LoadOptionList (ppd, "InputSlot", paper_sources);
}
/// <summary>
/// Loads the global options of a printer.
/// </summary>
/// <param name="options">The options field of a printer's CUPS_DESTS structure</param>
/// <param name="numOptions">The number of options of the printer</param>
private static NameValueCollection LoadPrinterOptions(IntPtr options, int numOptions)
{
CUPS_OPTIONS cups_options;
string option_name, option_value;
int cups_size = Marshal.SizeOf (typeof(CUPS_OPTIONS));
NameValueCollection list = new NameValueCollection ();
for (int j = 0; j < numOptions; j++)
{
cups_options = (CUPS_OPTIONS) Marshal.PtrToStructure(options, typeof(CUPS_OPTIONS));
option_name = Marshal.PtrToStringAnsi (cups_options.name);
option_value = Marshal.PtrToStringAnsi (cups_options.val);
#if PrintDebug
Console.WriteLine("{0} = {1}", option_name, option_value);
#endif
list.Add (option_name, option_value);
options = (IntPtr) ((long)options + cups_size);
}
return list;
}
/// <summary>
/// Loads a printer's options (selection of paper sizes, paper sources, etc)
/// </summary>
/// <param name="ppd">Printer ppd file handle</param>
/// <param name="option_name">Name of the option group to load</param>
/// <param name="list">List of loaded options</param>
private static void LoadOptionList(IntPtr ppd, string option_name, NameValueCollection list) {
IntPtr ptr = IntPtr.Zero;
PPD_OPTION ppd_option;
PPD_CHOICE choice;
int choice_size = Marshal.SizeOf(typeof(PPD_CHOICE));
ptr = ppdFindOption (ppd, option_name);
if (ptr != IntPtr.Zero)
{
ppd_option = (PPD_OPTION) Marshal.PtrToStructure (ptr, typeof (PPD_OPTION));
#if PrintDebug
Console.WriteLine (" OPTION key:{0} def:{1} text: {2}", ppd_option.keyword, ppd_option.defchoice, ppd_option.text);
#endif
ptr = ppd_option.choices;
for (int c = 0; c < ppd_option.num_choices; c++) {
choice = (PPD_CHOICE) Marshal.PtrToStructure (ptr, typeof (PPD_CHOICE));
list.Add(choice.choice, choice.text);
#if PrintDebug
Console.WriteLine (" choice:{0} - text: {1}", choice.choice, choice.text);
#endif
ptr = (IntPtr) ((long)ptr + choice_size);
}
}
}
/// <summary>
/// Loads a printer's available resolutions
/// </summary>
/// <param name="printer">Printer name</param>
/// <param name="settings">PrinterSettings object to fill</param>
internal override void LoadPrinterResolutions (string printer, PrinterSettings settings)
{
settings.PrinterResolutions.Clear ();
LoadDefaultResolutions (settings.PrinterResolutions);
}
/// <summary>
/// Loads a printer's paper sizes. Returns the default PaperSize, and fills a list of paper_names for use in dialogues
/// </summary>
/// <param name="ppd_handle">PPD printer file handle</param>
/// <param name="settings">PrinterSettings object to fill</param>
/// <param name="def_size">Default paper size, from the global options of the printer</param>
/// <param name="paper_names">List of available paper sizes that gets filled</param>
private PaperSize LoadPrinterPaperSizes(IntPtr ppd_handle, PrinterSettings settings,
string def_size, NameValueCollection paper_names)
{
IntPtr ptr;
string real_name;
PPD_FILE ppd;
PPD_SIZE size;
PaperSize ps;
PaperSize defsize = null;
ppd = (PPD_FILE) Marshal.PtrToStructure (ppd_handle, typeof (PPD_FILE));
ptr = ppd.sizes;
float w, h;
for (int i = 0; i < ppd.num_sizes; i++) {
size = (PPD_SIZE) Marshal.PtrToStructure (ptr, typeof (PPD_SIZE));
real_name = paper_names[size.name];
w = size.width * 100 / 72;
h = size.length * 100 / 72;
ps = new PaperSize (real_name, (int) w, (int) h, GetPaperKind ((int) w, (int) h), def_size == real_name);
if (def_size == real_name)
defsize = ps;
ps.SetKind (GetPaperKind ((int) w, (int) h));
settings.paper_sizes.Add (ps);
ptr = (IntPtr) ((long)ptr + Marshal.SizeOf (size));
}
return defsize;
}
/// <summary>
/// Loads a printer's paper sources (trays). Returns the default PaperSource, and fills a list of paper_sources for use in dialogues
/// </summary>
/// <param name="settings">PrinterSettings object to fill</param>
/// <param name="def_source">Default paper source, from the global options of the printer</param>
/// <param name="paper_sources">List of available paper sizes that gets filled</param>
private PaperSource LoadPrinterPaperSources (PrinterSettings settings, string def_source,
NameValueCollection paper_sources)
{
PaperSourceKind kind;
PaperSource defsource = null;
foreach(string source in paper_sources) {
switch (source)
{
case "Tray":
kind = PaperSourceKind.AutomaticFeed;
break;
case "Envelope":
kind = PaperSourceKind.Envelope;
break;
case "Manual":
kind = PaperSourceKind.Manual;
break;
default:
kind = PaperSourceKind.Custom;
break;
}
settings.paper_sources.Add (new PaperSource (paper_sources[source], kind, def_source == source));
if (def_source == source)
defsource = settings.paper_sources[settings.paper_sources.Count-1];
}
if (defsource == null && settings.paper_sources.Count > 0)
return settings.paper_sources[0];
return defsource;
}
/// <summary>
/// </summary>
/// <param name="load"></param>
/// <param name="def_printer"></param>
private static void LoadPrinters()
{
installed_printers.Clear ();
if (cups_installed == false)
return;
IntPtr dests = IntPtr.Zero, ptr_printers;
CUPS_DESTS printer;
int n_printers = 0;
int cups_dests_size = Marshal.SizeOf(typeof(CUPS_DESTS));
string name, first, type, status, comment;
first = type = status = comment = String.Empty;
int state = 0;
try {
n_printers = OpenDests (ref dests);
ptr_printers = dests;
for (int i = 0; i < n_printers; i++) {
printer = (CUPS_DESTS) Marshal.PtrToStructure (ptr_printers, typeof (CUPS_DESTS));
name = Marshal.PtrToStringAnsi (printer.name);
if (printer.is_default == 1)
default_printer = name;
if (first.Equals (String.Empty))
first = name;
NameValueCollection options = LoadPrinterOptions(printer.options, printer.num_options);
if (options["printer-state"] != null)
state = Int32.Parse(options["printer-state"]);
if (options["printer-comment"] != null)
comment = options["printer-state"];
switch(state) {
case 4:
status = "Printing";
break;
case 5:
status = "Stopped";
break;
default:
status = "Ready";
break;
}
installed_printers.Add (name, new SysPrn.Printer (String.Empty, type, status, comment));
ptr_printers = (IntPtr) ((long)ptr_printers + cups_dests_size);
}
}
finally {
CloseDests (ref dests, n_printers);
}
if (default_printer.Equals (String.Empty))
default_printer = first;
}
/// <summary>
/// Gets a printer's settings for use in the print dialogue
/// </summary>
/// <param name="printer"></param>
/// <param name="port"></param>
/// <param name="type"></param>
/// <param name="status"></param>
/// <param name="comment"></param>
internal override void GetPrintDialogInfo (string printer, ref string port, ref string type, ref string status, ref string comment) {
int count = 0, state = -1;
bool found = false;
CUPS_DESTS cups_dests;
IntPtr dests = IntPtr.Zero, ptr_printers, ptr_printer;
int cups_dests_size = Marshal.SizeOf(typeof(CUPS_DESTS));
if (cups_installed == false)
return;
try {
count = OpenDests (ref dests);
if (count == 0)
return;
ptr_printers = dests;
for (int i = 0; i < count; i++) {
ptr_printer = (IntPtr) Marshal.ReadIntPtr (ptr_printers);
if (Marshal.PtrToStringAnsi (ptr_printer).Equals(printer)) {
found = true;
break;
}
ptr_printers = (IntPtr) ((long)ptr_printers + cups_dests_size);
}
if (!found)
return;
cups_dests = (CUPS_DESTS) Marshal.PtrToStructure (ptr_printers, typeof (CUPS_DESTS));
NameValueCollection options = LoadPrinterOptions(cups_dests.options, cups_dests.num_options);
if (options["printer-state"] != null)
state = Int32.Parse(options["printer-state"]);
if (options["printer-comment"] != null)
comment = options["printer-state"];
switch(state) {
case 4:
status = "Printing";
break;
case 5:
status = "Stopped";
break;
default:
status = "Ready";
break;
}
}
finally {
CloseDests (ref dests, count);
}
}
/// <summary>
/// Returns the appropriate PaperKind for the width and height
/// </summary>
/// <param name="width"></param>
/// <param name="height"></param>
private PaperKind GetPaperKind (int width, int height)
{
if (width == 827 && height == 1169)
return PaperKind.A4;
if (width == 583 && height == 827)
return PaperKind.A5;
if (width == 717 && height == 1012)
return PaperKind.B5;
if (width == 693 && height == 984)
return PaperKind.B5Envelope;
if (width == 638 && height == 902)
return PaperKind.C5Envelope;
if (width == 449 && height == 638)
return PaperKind.C6Envelope;
if (width == 1700 && height == 2200)
return PaperKind.CSheet;
if (width == 433 && height == 866)
return PaperKind.DLEnvelope;
if (width == 2200 && height == 3400)
return PaperKind.DSheet;
if (width == 3400 && height == 4400)
return PaperKind.ESheet;
if (width == 725 && height == 1050)
return PaperKind.Executive;
if (width == 850 && height == 1300)
return PaperKind.Folio;
if (width == 850 && height == 1200)
return PaperKind.GermanStandardFanfold;
if (width == 1700 && height == 1100)
return PaperKind.Ledger;
if (width == 850 && height == 1400)
return PaperKind.Legal;
if (width == 927 && height == 1500)
return PaperKind.LegalExtra;
if (width == 850 && height == 1100)
return PaperKind.Letter;
if (width == 927 && height == 1200)
return PaperKind.LetterExtra;
if (width == 850 && height == 1269)
return PaperKind.LetterPlus;
if (width == 387 && height == 750)
return PaperKind.MonarchEnvelope;
if (width == 387 && height == 887)
return PaperKind.Number9Envelope;
if (width == 413 && height == 950)
return PaperKind.Number10Envelope;
if (width == 450 && height == 1037)
return PaperKind.Number11Envelope;
if (width == 475 && height == 1100)
return PaperKind.Number12Envelope;
if (width == 500 && height == 1150)
return PaperKind.Number14Envelope;
if (width == 363 && height == 650)
return PaperKind.PersonalEnvelope;
if (width == 1000 && height == 1100)
return PaperKind.Standard10x11;
if (width == 1000 && height == 1400)
return PaperKind.Standard10x14;
if (width == 1100 && height == 1700)
return PaperKind.Standard11x17;
if (width == 1200 && height == 1100)
return PaperKind.Standard12x11;
if (width == 1500 && height == 1100)
return PaperKind.Standard15x11;
if (width == 900 && height == 1100)
return PaperKind.Standard9x11;
if (width == 550 && height == 850)
return PaperKind.Statement;
if (width == 1100 && height == 1700)
return PaperKind.Tabloid;
if (width == 1487 && height == 1100)
return PaperKind.USStandardFanfold;
return PaperKind.Custom;
}
#endregion
#region Print job methods
static string tmpfile;
/// <summary>
/// Gets a pointer to an options list parsed from the printer's current settings, to use when setting up the printing job
/// </summary>
/// <param name="printer_settings"></param>
/// <param name="page_settings"></param>
/// <param name="options"></param>
internal static int GetCupsOptions (PrinterSettings printer_settings, PageSettings page_settings, out IntPtr options)
{
options = IntPtr.Zero;
PaperSize size = page_settings.PaperSize;
int width = size.Width * 72 / 100;
int height = size.Height * 72 / 100;
StringBuilder sb = new StringBuilder();
sb.Append(
"copies=" + printer_settings.Copies + " " +
"Collate=" + printer_settings.Collate + " " +
"ColorModel=" + (page_settings.Color ? "Color" : "Black") + " " +
"PageSize=" + String.Format ("Custom.{0}x{1}", width, height) + " " +
"landscape=" + page_settings.Landscape
);
if (printer_settings.CanDuplex)
{
if (printer_settings.Duplex == Duplex.Simplex)
sb.Append(" Duplex=None");
else
sb.Append(" Duplex=DuplexNoTumble");
}
return cupsParseOptions (sb.ToString(), 0, ref options);
}
internal static bool StartDoc (GraphicsPrinter gr, string doc_name, string output_file)
{
DOCINFO doc = (DOCINFO) doc_info[gr.Hdc];
doc.title = doc_name;
return true;
}
internal static bool EndDoc (GraphicsPrinter gr)
{
DOCINFO doc = (DOCINFO) doc_info[gr.Hdc];
gr.Graphics.Dispose (); // Dispose object to force surface finish
IntPtr options;
int options_count = GetCupsOptions (doc.settings, doc.default_page_settings, out options);
cupsPrintFile (doc.settings.PrinterName, doc.filename, doc.title, options_count, options);
cupsFreeOptions (options_count, options);
doc_info.Remove (gr.Hdc);
if (tmpfile != null) {
try { File.Delete (tmpfile); }
catch { }
}
return true;
}
internal static bool StartPage (GraphicsPrinter gr)
{
return true;
}
internal static bool EndPage (GraphicsPrinter gr)
{
GdipGetPostScriptSavePage (gr.Hdc);
return true;
}
// Unfortunately, PrinterSettings and PageSettings couldn't be referencing each other,
// thus we need to pass them separately
internal static IntPtr CreateGraphicsContext (PrinterSettings settings, PageSettings default_page_settings)
{
IntPtr graphics = IntPtr.Zero;
string name;
if (!settings.PrintToFile) {
StringBuilder sb = new StringBuilder (1024);
int length = sb.Capacity;
cupsTempFile (sb, length);
name = sb.ToString ();
tmpfile = name;
}
else
name = settings.PrintFileName;
PaperSize psize = default_page_settings.PaperSize;
int width, height;
if (default_page_settings.Landscape) { // Swap in case of landscape
width = psize.Height;
height = psize.Width;
} else {
width = psize.Width;
height = psize.Height;
}
GdipGetPostScriptGraphicsContext (name,
width * 72 / 100,
height * 72 / 100,
default_page_settings.PrinterResolution.X,
default_page_settings.PrinterResolution.Y, ref graphics);
DOCINFO doc = new DOCINFO ();
doc.filename = name;
doc.settings = settings;
doc.default_page_settings = default_page_settings;
doc_info.Add (graphics, doc);
return graphics;
}
#endregion
#region DllImports
[DllImport("libcups", CharSet=CharSet.Ansi)]
static extern int cupsGetDests (ref IntPtr dests);
// [DllImport("libcups", CharSet=CharSet.Ansi)]
// static extern void cupsGetDest (string name, string instance, int num_dests, ref IntPtr dests);
[DllImport("libcups")]
static extern void cupsFreeDests (int num_dests, IntPtr dests);
[DllImport("libcups", CharSet=CharSet.Ansi)]
static extern IntPtr cupsTempFile (StringBuilder sb, int len);
[DllImport("libcups", CharSet=CharSet.Ansi)]
static extern IntPtr cupsGetDefault ();
[DllImport("libcups", CharSet=CharSet.Ansi)]
static extern int cupsPrintFile (string printer, string filename, string title, int num_options, IntPtr options);
[DllImport("libcups", CharSet=CharSet.Ansi)]
static extern IntPtr cupsGetPPD (string printer);
[DllImport("libcups", CharSet=CharSet.Ansi)]
static extern IntPtr ppdOpenFile (string filename);
[DllImport("libcups", CharSet=CharSet.Ansi)]
static extern IntPtr ppdFindOption (IntPtr ppd_file, string keyword);
[DllImport("libcups")]
static extern void ppdClose (IntPtr ppd);
[DllImport ("libcups", CharSet=CharSet.Ansi)]
static extern int cupsParseOptions (string arg, int number_of_options, ref IntPtr options);
[DllImport("libcups")]
static extern void cupsFreeOptions (int number_options, IntPtr options);
[DllImport("gdiplus.dll", CharSet=CharSet.Ansi)]
static extern int GdipGetPostScriptGraphicsContext (string filename, int with, int height, double dpix, double dpiy, ref IntPtr graphics);
[DllImport("gdiplus.dll")]
static extern int GdipGetPostScriptSavePage (IntPtr graphics);
#endregion
#region Struct
public struct DOCINFO
{
public PrinterSettings settings;
public PageSettings default_page_settings;
public string title;
public string filename;
}
public struct PPD_SIZE
{
public int marked;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=42)]
public string name;
public float width;
public float length;
public float left;
public float bottom;
public float right;
public float top;
}
public struct PPD_GROUP
{
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=40)]
public string text;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=42)]
public string name;
public int num_options;
public IntPtr options;
public int num_subgroups;
public IntPtr subgrups;
}
public struct PPD_OPTION
{
public byte conflicted;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=41)]
public string keyword;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=41)]
public string defchoice;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=81)]
public string text;
public int ui;
public int section;
public float order;
public int num_choices;
public IntPtr choices;
}
public struct PPD_CHOICE
{
public byte marked;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=41)]
public string choice;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=81)]
public string text;
public IntPtr code;
public IntPtr option;
}
public struct PPD_FILE
{
public int language_level;
public int color_device;
public int variable_sizes;
public int accurate_screens;
public int contone_only;
public int landscape;
public int model_number;
public int manual_copies;
public int throughput;
public int colorspace;
public IntPtr patches;
public int num_emulations;
public IntPtr emulations;
public IntPtr jcl_begin;
public IntPtr jcl_ps;
public IntPtr jcl_end;
public IntPtr lang_encoding;
public IntPtr lang_version;
public IntPtr modelname;
public IntPtr ttrasterizer;
public IntPtr manufacturer;
public IntPtr product;
public IntPtr nickname;
public IntPtr shortnickname;
public int num_groups;
public IntPtr groups;
public int num_sizes;
public IntPtr sizes;
/* There is more data after this that we are not using*/
}
public struct CUPS_OPTIONS
{
public IntPtr name;
public IntPtr val;
}
public struct CUPS_DESTS
{
public IntPtr name;
public IntPtr instance;
public int is_default;
public int num_options;
public IntPtr options;
}
#endregion
}
class GlobalPrintingServicesUnix : GlobalPrintingServices
{
internal override PrinterSettings.StringCollection InstalledPrinters {
get {
return PrintingServicesUnix.InstalledPrinters;
}
}
internal override IntPtr CreateGraphicsContext (PrinterSettings settings, PageSettings default_page_settings)
{
return PrintingServicesUnix.CreateGraphicsContext (settings, default_page_settings);
}
internal override bool StartDoc (GraphicsPrinter gr, string doc_name, string output_file)
{
return PrintingServicesUnix.StartDoc (gr, doc_name, output_file);
}
internal override bool EndDoc (GraphicsPrinter gr)
{
return PrintingServicesUnix.EndDoc (gr);
}
internal override bool StartPage (GraphicsPrinter gr)
{
return PrintingServicesUnix.StartPage (gr);
}
internal override bool EndPage (GraphicsPrinter gr)
{
return PrintingServicesUnix.EndPage (gr);
}
}
}
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