First step of the printing system rework. EvJobPrint has been replaced by

2008-12-24  Carlos Garcia Campos  <carlosgc@gnome.org>

	* shell/Makefile.am:
	* shell/ev-print-operation.[ch]:
	* shell/ev-jobs.[ch]: (ev_job_export_init),
	(ev_job_export_dispose), (ev_job_export_run),
	(ev_job_export_class_init), (ev_job_export_new),
	(ev_job_export_set_page):
	* shell/ev-window.c: (ev_window_print_operation_done),
	(ev_window_print_range), (ev_window_dispose):

	First step of the printing system rework. EvJobPrint has been
	replaced by EvJobExport so that every page is scheduled to be
	exported in a thread instead of scheduling the whole printing
	process. This way the gui is responsive during printing.

svn path=/trunk/; revision=3306

1 files changed, 1043 insertions, 0 deletions

diff --git a/shell/ev-print-operation.c b/shell/ev-print-operation.c
new file mode 100644
index 0000000..c71ff42
--- /dev/null
+++ b/shell/ev-print-operation.c
@@ -0,0 +1,1043 @@
+/* this file is part of evince, a gnome document viewer
+ *
+ *  Copyright (C) 2008 Carlos Garcia Campos <carlosgc@gnome.org>
+ *
+ * Evince is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Evince is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <config.h>
+
+#include "ev-print-operation.h"
+
+#if GTK_CHECK_VERSION (2, 14, 0)
+#include <gtk/gtkunixprint.h>
+#else
+#include <gtk/gtkprintunixdialog.h>
+#endif
+
+#include <glib/gi18n.h>
+#include <glib/gstdio.h>
+#include <unistd.h>
+
+#include "ev-page-cache.h"
+#include "ev-file-exporter.h"
+#include "ev-jobs.h"
+#include "ev-job-scheduler.h"
+#include "ev-application.h"
+#include "ev-file-helpers.h"
+
+enum {
+	PROP_0,
+	PROP_DOCUMENT
+};
+
+enum {
+	DONE,
+	LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+struct _EvPrintOperation {
+	GObject parent;
+
+	EvDocument *document;
+};
+
+struct _EvPrintOperationClass {
+	GObjectClass parent_class;
+
+	void              (* set_current_page)       (EvPrintOperation       *op,
+						      gint                    current_page);
+	void              (* set_print_settings)     (EvPrintOperation       *op,
+						      GtkPrintSettings       *print_settings);
+	GtkPrintSettings *(* get_print_settings)     (EvPrintOperation       *op);
+	void              (* set_default_page_setup) (EvPrintOperation       *op,
+						      GtkPageSetup           *page_setup);
+	GtkPageSetup     *(* get_default_page_setup) (EvPrintOperation       *op);
+	void              (* set_job_name)           (EvPrintOperation       *op,
+						      const gchar            *job_name);
+	void              (* run)                    (EvPrintOperation       *op,
+						      GtkWindow              *parent);
+	void              (* cancel)                 (EvPrintOperation       *op);
+	void              (* get_error)              (EvPrintOperation       *op,
+						      GError                **error);
+
+	/* signals */
+	void              (* done)                   (EvPrintOperation       *op,
+						      GtkPrintOperationResult result);
+};
+
+G_DEFINE_ABSTRACT_TYPE (EvPrintOperation, ev_print_operation, G_TYPE_OBJECT)
+
+static void
+ev_print_operation_finalize (GObject *object)
+{
+	EvPrintOperation *op = EV_PRINT_OPERATION (object);
+
+	if (op->document) {
+		g_object_unref (op->document);
+		op->document = NULL;
+	}
+
+	(* G_OBJECT_CLASS (ev_print_operation_parent_class)->finalize) (object);
+}
+
+static void
+ev_print_operation_set_property (GObject      *object,
+				 guint         prop_id,
+				 const GValue *value,
+				 GParamSpec   *pspec)
+{
+	EvPrintOperation *op = EV_PRINT_OPERATION (object);
+
+	switch (prop_id) {
+	case PROP_DOCUMENT:
+		op->document = g_value_dup_object (value);
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+	}
+}
+
+static void
+ev_print_operation_init (EvPrintOperation *op)
+{
+}
+
+static void
+ev_print_operation_class_init (EvPrintOperationClass *klass)
+{
+	GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
+
+	g_object_class->set_property = ev_print_operation_set_property;
+	g_object_class->finalize = ev_print_operation_finalize;
+
+	g_object_class_install_property (g_object_class,
+					 PROP_DOCUMENT,
+					 g_param_spec_object ("document",
+							      "Document",
+							      "The document to print",
+							      EV_TYPE_DOCUMENT,
+							      G_PARAM_WRITABLE |
+							      G_PARAM_CONSTRUCT_ONLY));
+	signals[DONE] =
+		g_signal_new ("done",
+			      G_TYPE_FROM_CLASS (g_object_class),
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (EvPrintOperationClass, done),
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__ENUM,
+			      G_TYPE_NONE, 1,
+			      GTK_TYPE_PRINT_OPERATION_RESULT);
+	
+}
+
+/* Public methods */
+void
+ev_print_operation_set_current_page (EvPrintOperation *op,
+				     gint              current_page)
+{
+	EvPrintOperationClass *class = EV_PRINT_OPERATION_GET_CLASS (op);
+
+	g_return_if_fail (EV_IS_PRINT_OPERATION (op));
+	g_return_if_fail (current_page >= 0);
+
+	class->set_current_page (op, current_page);
+}
+
+void
+ev_print_operation_set_print_settings (EvPrintOperation *op,
+				       GtkPrintSettings *print_settings)
+{
+	EvPrintOperationClass *class = EV_PRINT_OPERATION_GET_CLASS (op);
+
+	g_return_if_fail (EV_IS_PRINT_OPERATION (op));
+	g_return_if_fail (GTK_IS_PRINT_SETTINGS (print_settings));
+
+	class->set_print_settings (op, print_settings);
+}
+
+GtkPrintSettings *
+ev_print_operation_get_print_settings (EvPrintOperation *op)
+{
+	EvPrintOperationClass *class = EV_PRINT_OPERATION_GET_CLASS (op);
+
+	g_return_val_if_fail (EV_IS_PRINT_OPERATION (op), NULL);
+
+	return class->get_print_settings (op);
+}
+
+void
+ev_print_operation_set_default_page_setup (EvPrintOperation *op,
+					   GtkPageSetup     *page_setup)
+{
+	EvPrintOperationClass *class = EV_PRINT_OPERATION_GET_CLASS (op);
+
+	g_return_if_fail (EV_IS_PRINT_OPERATION (op));
+	g_return_if_fail (GTK_IS_PAGE_SETUP (page_setup));
+
+	class->set_default_page_setup (op, page_setup);
+}
+
+GtkPageSetup *
+ev_print_operation_get_default_page_setup (EvPrintOperation *op)
+{
+	EvPrintOperationClass *class = EV_PRINT_OPERATION_GET_CLASS (op);
+
+	g_return_val_if_fail (EV_IS_PRINT_OPERATION (op), NULL);
+
+	return class->get_default_page_setup (op);
+}
+
+void
+ev_print_operation_set_job_name (EvPrintOperation *op,
+				 const gchar      *job_name)
+{
+	EvPrintOperationClass *class = EV_PRINT_OPERATION_GET_CLASS (op);
+
+	g_return_if_fail (EV_IS_PRINT_OPERATION (op));
+	g_return_if_fail (job_name != NULL);
+
+	class->set_job_name (op, job_name);
+}
+
+void
+ev_print_operation_run (EvPrintOperation *op,
+			GtkWindow        *parent)
+{
+	EvPrintOperationClass *class = EV_PRINT_OPERATION_GET_CLASS (op);
+
+	g_return_if_fail (EV_IS_PRINT_OPERATION (op));
+
+	class->run (op, parent);
+}
+
+void
+ev_print_operation_cancel (EvPrintOperation *op)
+{
+	EvPrintOperationClass *class = EV_PRINT_OPERATION_GET_CLASS (op);
+
+	g_return_if_fail (EV_IS_PRINT_OPERATION (op));
+
+	class->cancel (op);
+}
+
+void
+ev_print_operation_get_error (EvPrintOperation *op,
+			      GError          **error)
+{
+	EvPrintOperationClass *class = EV_PRINT_OPERATION_GET_CLASS (op);
+
+	g_return_if_fail (EV_IS_PRINT_OPERATION (op));
+
+	class->get_error (op, error);
+}
+
+/* Export interface */
+#define EV_TYPE_PRINT_OPERATION_EXPORT         (ev_print_operation_export_get_type())
+#define EV_PRINT_OPERATION_EXPORT(object)      (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_PRINT_OPERATION_EXPORT, EvPrintOperationExport))
+#define EV_PRINT_OPERATION_EXPORT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_PRINT_OPERATION_EXPORT, EvPrintOperationExportClass))
+#define EV_IS_PRINT_OPERATION_EXPORT(object)   (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_PRINT_OPERATION_EXPORT))
+
+typedef struct _EvPrintOperationExport      EvPrintOperationExport;
+typedef struct _EvPrintOperationExportClass EvPrintOperationExportClass;
+
+GType           ev_print_operation_export_get_type (void) G_GNUC_CONST;
+
+static gboolean export_print_page                  (EvPrintOperationExport *export);
+
+struct _EvPrintOperationExport {
+	EvPrintOperation parent;
+
+	GtkWindow *parent_window;
+	EvJob *job_export;
+	GError *error;
+
+	gboolean print_preview;
+	gint n_pages;
+	gint current_page;
+	GtkPrinter *printer;
+	GtkPageSetup *page_setup;
+	GtkPrintSettings *print_settings;
+	GtkPageSet page_set;
+	gint copies;
+	guint collate     : 1;
+	guint reverse     : 1;
+	gint pages_per_sheet;
+	gint fd;
+	gchar *temp_file;
+	gchar *job_name;
+	
+	guint idle_id;
+	
+	/* Context */
+	gint uncollated_copies;
+	gint collated_copies;
+	gint uncollated, collated, total;
+
+	gint range, n_ranges;
+	GtkPageRange *ranges;
+	GtkPageRange one_range;
+
+	gint page, start, end, inc;
+};
+
+struct _EvPrintOperationExportClass {
+	EvPrintOperationClass parent_class;
+};
+
+G_DEFINE_TYPE (EvPrintOperationExport, ev_print_operation_export, EV_TYPE_PRINT_OPERATION)
+
+static void
+ev_print_operation_export_set_current_page (EvPrintOperation *op,
+					    gint              current_page)
+{
+	EvPrintOperationExport *export = EV_PRINT_OPERATION_EXPORT (op);
+
+	g_return_if_fail (current_page < export->n_pages);
+	
+	export->current_page = current_page;
+}
+
+static void
+ev_print_operation_export_set_print_settings (EvPrintOperation *op,
+					      GtkPrintSettings *print_settings)
+{
+	EvPrintOperationExport *export = EV_PRINT_OPERATION_EXPORT (op);
+
+	if (print_settings == export->print_settings)
+		return;
+
+	g_object_ref (print_settings);
+	if (export->print_settings)
+		g_object_unref (export->print_settings);
+	export->print_settings = print_settings;
+}
+
+static GtkPrintSettings *
+ev_print_operation_export_get_print_settings (EvPrintOperation *op)
+{
+	EvPrintOperationExport *export = EV_PRINT_OPERATION_EXPORT (op);
+
+	return export->print_settings;
+}
+
+static void
+ev_print_operation_export_set_default_page_setup (EvPrintOperation *op,
+						  GtkPageSetup     *page_setup)
+{
+	EvPrintOperationExport *export = EV_PRINT_OPERATION_EXPORT (op);
+
+	if (page_setup == export->page_setup)
+		return;
+
+	g_object_ref (page_setup);
+	if (export->page_setup)
+		g_object_unref (export->page_setup);
+	export->page_setup = page_setup;
+}
+
+static GtkPageSetup *
+ev_print_operation_export_get_default_page_setup (EvPrintOperation *op)
+{
+	EvPrintOperationExport *export = EV_PRINT_OPERATION_EXPORT (op);
+
+	return export->page_setup;
+}
+
+static void
+ev_print_operation_export_set_job_name (EvPrintOperation *op,
+					const gchar      *job_name)
+{
+	EvPrintOperationExport *export = EV_PRINT_OPERATION_EXPORT (op);
+
+	g_free (export->job_name);
+	export->job_name = g_strdup (job_name);
+}
+
+static void
+ev_print_operation_export_set_printer (EvPrintOperationExport *export,
+				       GtkPrinter             *printer)
+{
+	if (printer == export->printer)
+		return;
+
+	g_object_ref (printer);
+	if (export->printer)
+		g_object_unref (export->printer);
+	export->printer = printer;
+}
+
+static void
+find_range (EvPrintOperationExport *export)
+{
+	GtkPageRange *range;
+
+	range = &export->ranges[export->range];
+
+	if (export->inc < 0) {
+		export->start = range->end;
+		export->end = range->start - 1;
+	} else {
+		export->start = range->start;
+		export->end = range->end + 1;
+	}
+}
+
+static void
+clamp_ranges (EvPrintOperationExport *export)
+{
+	gint num_of_correct_ranges = 0;
+	gint i;
+
+	for (i = 0; i < export->n_ranges; i++) {
+		if ((export->ranges[i].start >= 0) &&
+		    (export->ranges[i].start < export->n_pages) &&
+		    (export->ranges[i].end >= 0) &&
+		    (export->ranges[i].end < export->n_pages)) {
+			export->ranges[num_of_correct_ranges] = export->ranges[i];
+			num_of_correct_ranges++;
+		} else if ((export->ranges[i].start >= 0) &&
+			   (export->ranges[i].start < export->n_pages) &&
+			   (export->ranges[i].end >= export->n_pages)) {
+			export->ranges[i].end = export->n_pages - 1;
+			export->ranges[num_of_correct_ranges] = export->ranges[i];
+			num_of_correct_ranges++;
+		} else if ((export->ranges[i].end >= 0) &&
+			   (export->ranges[i].end < export->n_pages) &&
+			   (export->ranges[i].start < 0)) {
+			export->ranges[i].start = 0;
+			export->ranges[num_of_correct_ranges] = export->ranges[i];
+			num_of_correct_ranges++;
+		}
+	}
+
+	export->n_ranges = num_of_correct_ranges;
+}
+
+static gint
+get_first_page (EvPrintOperationExport *export)
+{
+	gint i;
+	gint first_page = G_MAXINT;
+
+	if (export->n_ranges == 0)
+		return 0;
+
+	for (i = 0; i < export->n_ranges; i++) {
+		if (export->ranges[i].start < first_page)
+			first_page = export->ranges[i].start;
+	}
+
+	return MAX (0, first_page);
+}
+
+static gint
+get_last_page (EvPrintOperationExport *export)
+{
+	gint i;
+	gint last_page = G_MININT;
+	gint max_page = export->n_pages - 1;
+
+	if (export->n_ranges == 0)
+		return max_page;
+
+	for (i = 0; i < export->n_ranges; i++) {
+		if (export->ranges[i].end > last_page)
+			last_page = export->ranges[i].end;
+	}
+
+	return MIN (max_page, last_page);
+}
+
+static gboolean
+export_print_inc_page (EvPrintOperationExport *export)
+{
+	do {
+		export->page += export->inc;
+		if (export->page == export->end) {
+			export->range += export->inc;
+			if (export->range == -1 || export->range == export->n_ranges) {
+				export->uncollated++;
+				if (export->uncollated == export->uncollated_copies)
+					return FALSE;
+
+				export->range = export->inc < 0 ? export->n_ranges - 1 : 0;
+			}
+			find_range (export);
+			export->page = export->start;
+		}
+	} while ((export->page_set == GTK_PAGE_SET_EVEN && export->page % 2 == 0) ||
+		 (export->page_set == GTK_PAGE_SET_ODD && export->page % 2 == 1));
+
+	return TRUE;
+}
+
+static void
+ev_print_operation_export_clear_temp_file (EvPrintOperationExport *export)
+{
+	if (!export->temp_file)
+		return;
+
+	g_unlink (export->temp_file);
+	g_free (export->temp_file);
+	export->temp_file = NULL;
+}
+
+static void
+print_job_finished (GtkPrintJob            *print_job,
+		    EvPrintOperationExport *export,
+		    GError                 *error)
+{
+	EvPrintOperation *op = EV_PRINT_OPERATION (export);
+	
+	if (error) {
+		g_set_error_literal (&export->error,
+				     GTK_PRINT_ERROR,
+				     GTK_PRINT_ERROR_GENERAL,
+				     error->message);
+		g_signal_emit (op, signals[DONE], 0, GTK_PRINT_OPERATION_RESULT_ERROR);
+	} else {
+		g_signal_emit (op, signals[DONE], 0, GTK_PRINT_OPERATION_RESULT_APPLY);
+	}
+
+	ev_print_operation_export_clear_temp_file (export);
+	g_object_unref (print_job);
+}
+
+static void
+export_print_done (EvPrintOperationExport *export)
+{
+	EvPrintOperation *op = EV_PRINT_OPERATION (export);
+	GtkPrintSettings *settings;
+	EvFileExporterCapabilities capabilities;
+
+	/* Some printers take into account some print settings,
+	 * and others don't. However we have exported the document
+	 * to a ps or pdf file according to such print settings. So,
+	 * we want to send the exported file to printer with those
+	 * settings set to default values.
+	 */
+	settings = gtk_print_settings_copy (export->print_settings);
+	capabilities = ev_file_exporter_get_capabilities (EV_FILE_EXPORTER (op->document));
+
+	gtk_print_settings_set_page_ranges (settings, NULL, 0);
+	gtk_print_settings_set_print_pages (settings, GTK_PRINT_PAGES_ALL);
+	if (capabilities & EV_FILE_EXPORTER_CAN_COPIES)
+		gtk_print_settings_set_n_copies (settings, 1);
+	if (capabilities & EV_FILE_EXPORTER_CAN_PAGE_SET)
+		gtk_print_settings_set_page_set (settings, GTK_PAGE_SET_ALL);
+	if (capabilities & EV_FILE_EXPORTER_CAN_SCALE)
+		gtk_print_settings_set_scale (settings, 1.0);
+	if (capabilities & EV_FILE_EXPORTER_CAN_COLLATE)
+		gtk_print_settings_set_collate (settings, FALSE);
+	if (capabilities & EV_FILE_EXPORTER_CAN_REVERSE)
+		gtk_print_settings_set_reverse (settings, FALSE);
+	if (capabilities & EV_FILE_EXPORTER_CAN_NUMBER_UP) {
+		gtk_print_settings_set_number_up (settings, 1);
+		gtk_print_settings_set_int (settings, "cups-"GTK_PRINT_SETTINGS_NUMBER_UP, 1);
+	}
+
+	if (export->print_preview) {
+		gchar *uri;
+		gchar *print_settings_file = NULL;
+
+		print_settings_file = ev_tmp_filename ("print-settings");
+		gtk_print_settings_to_file (settings, print_settings_file, NULL);
+
+		uri = g_filename_to_uri (export->temp_file, NULL, NULL);
+		ev_application_open_uri_at_dest (EV_APP,
+						 uri,
+						 gtk_window_get_screen (export->parent_window),
+						 NULL,
+						 EV_WINDOW_MODE_PREVIEW,
+						 NULL,
+						 TRUE,
+						 print_settings_file,
+						 GDK_CURRENT_TIME);
+		g_free (print_settings_file);
+		g_free (uri);
+
+		g_signal_emit (op, signals[DONE], 0, GTK_PRINT_OPERATION_RESULT_APPLY);
+		/* temp_file will be deleted by the previewer */
+	} else {
+		GtkPrintJob *job;
+		GError      *error = NULL;
+		
+		job = gtk_print_job_new (export->job_name,
+					 export->printer,
+					 settings,
+					 export->page_setup);
+		gtk_print_job_set_source_file (job, export->temp_file, &error);
+		if (error) {
+			g_set_error_literal (&export->error,
+					     GTK_PRINT_ERROR,
+					     GTK_PRINT_ERROR_GENERAL,
+					     error->message);
+			g_error_free (error);
+			ev_print_operation_export_clear_temp_file (export);
+			g_signal_emit (op, signals[DONE], 0, GTK_PRINT_OPERATION_RESULT_ERROR);
+		} else {
+			gtk_print_job_send (job,
+					    (GtkPrintJobCompleteFunc)print_job_finished,
+					    g_object_ref (export),
+					    (GDestroyNotify)g_object_unref);
+		}
+	}
+	g_object_unref (settings);
+}
+
+static void
+export_print_page_idle_finished (EvPrintOperationExport *export)
+{
+	export->idle_id = 0;
+}
+
+static void
+export_job_finished (EvJobExport            *job,
+		     EvPrintOperationExport *export)
+{
+	EvPrintOperation *op = EV_PRINT_OPERATION (export);
+
+	if (export->pages_per_sheet == 1 || export->total % export->pages_per_sheet == 0) {
+		ev_document_doc_mutex_lock ();
+		ev_file_exporter_end_page (EV_FILE_EXPORTER (op->document));
+		ev_document_doc_mutex_unlock ();
+	}
+
+	/* Reschedule */
+	export->idle_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE,
+					   (GSourceFunc)export_print_page,
+					   export,
+					   (GDestroyNotify)export_print_page_idle_finished);
+}
+
+static void
+export_job_cancelled (EvJobExport            *job,
+		      EvPrintOperationExport *export)
+{
+	EvPrintOperation *op = EV_PRINT_OPERATION (export);
+
+	if (export->idle_id > 0)
+		g_source_remove (export->idle_id);
+	export->idle_id = 0;
+
+	g_signal_handlers_disconnect_by_func (export->job_export,
+					      export_job_finished,
+					      export);
+	g_signal_handlers_disconnect_by_func (export->job_export,
+					      export_job_cancelled,
+					      export);
+	g_object_unref (export->job_export);
+	export->job_export = NULL;
+
+	if (export->fd != -1) {
+		close (export->fd);
+		export->fd = -1;
+	}
+
+	ev_print_operation_export_clear_temp_file (export);
+
+	g_signal_emit (op, signals[DONE], 0, GTK_PRINT_OPERATION_RESULT_CANCEL);
+}
+
+static gboolean
+export_print_page (EvPrintOperationExport *export)
+{
+	EvPrintOperation *op = EV_PRINT_OPERATION (export);
+	
+	export->total++;
+	export->collated++;
+
+	if (export->collated == export->collated_copies) {
+		export->collated = 0;
+		if (!export_print_inc_page (export)) {
+			ev_document_doc_mutex_lock ();
+			if (export->pages_per_sheet > 1 &&
+			    export->total - 1 % export->pages_per_sheet == 0)
+				ev_file_exporter_end_page (EV_FILE_EXPORTER (op->document));
+			ev_file_exporter_end (EV_FILE_EXPORTER (op->document));
+			ev_document_doc_mutex_unlock ();
+
+			close (export->fd);
+			export->fd = -1;
+
+			export_print_done (export);
+			
+			return FALSE;
+		}
+	}
+
+	if (export->pages_per_sheet == 1 || export->total % export->pages_per_sheet == 1) {
+		ev_document_doc_mutex_lock ();
+		ev_file_exporter_begin_page (EV_FILE_EXPORTER (op->document));
+		ev_document_doc_mutex_unlock ();
+	}
+	
+	if (!export->job_export) {
+		export->job_export = ev_job_export_new (op->document);
+		g_signal_connect (G_OBJECT (export->job_export), "finished",
+				  G_CALLBACK (export_job_finished),
+				  (gpointer)export);
+		g_signal_connect (G_OBJECT (export->job_export), "cancelled",
+				  G_CALLBACK (export_job_cancelled),
+				  (gpointer)export);
+	}
+
+	ev_job_export_set_page (EV_JOB_EXPORT (export->job_export), export->page);
+	ev_job_scheduler_push_job (export->job_export, EV_JOB_PRIORITY_NONE);
+	
+	return FALSE;
+}
+
+static gboolean
+ev_print_operation_export_print_dialog_response_cb (GtkDialog              *dialog,
+						    gint                    response,
+						    EvPrintOperationExport *export)
+{
+	GtkPrintPages         print_pages;
+	GtkPrintSettings     *print_settings;
+	GtkPageSetup         *page_setup;
+	GtkPrinter           *printer;
+	gdouble               scale;
+	gdouble               width;
+	gdouble               height;
+	gint                  first_page;
+	gint                  last_page;
+	const gchar          *file_format;
+	gchar                *filename;
+	EvFileExporterContext fc;
+	GError               *error = NULL;
+	EvPrintOperation     *op = EV_PRINT_OPERATION (export);
+	
+	if (response != GTK_RESPONSE_OK &&
+	    response != GTK_RESPONSE_APPLY) {
+		gtk_widget_destroy (GTK_WIDGET (dialog));
+
+		return FALSE;
+	}
+
+	export->print_preview = (response == GTK_RESPONSE_APPLY);
+	
+	printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (dialog));
+	ev_print_operation_export_set_printer (export, printer);
+
+	print_settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (dialog));
+	ev_print_operation_export_set_print_settings (op, print_settings);
+
+	page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (dialog));
+	ev_print_operation_export_set_default_page_setup (op, page_setup);
+
+	if (!gtk_printer_accepts_ps (export->printer)) {
+		g_set_error (&export->error,
+			     GTK_PRINT_ERROR,
+			     GTK_PRINT_ERROR_GENERAL,
+			     "%s", _("Printing is not supported on this printer."));
+		g_signal_emit (op, signals[DONE], 0, GTK_PRINT_OPERATION_RESULT_ERROR);
+		gtk_widget_destroy (GTK_WIDGET (dialog));
+		
+		return FALSE;
+	}
+
+	file_format = gtk_print_settings_get (print_settings, GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT);
+	
+	filename = g_strdup_printf ("evince_print.%s.XXXXXX", file_format);
+	export->fd = g_file_open_tmp (filename, &export->temp_file, &error);
+	g_free (filename);
+	if (export->fd <= -1) {
+		g_set_error_literal (&export->error,
+				     GTK_PRINT_ERROR,
+				     GTK_PRINT_ERROR_GENERAL,
+				     error->message);
+		g_error_free (error);
+		g_signal_emit (op, signals[DONE], 0, GTK_PRINT_OPERATION_RESULT_ERROR);
+		gtk_widget_destroy (GTK_WIDGET (dialog));
+
+		return FALSE;
+	}
+
+	export->current_page = gtk_print_unix_dialog_get_current_page (GTK_PRINT_UNIX_DIALOG (dialog));
+	print_pages = gtk_print_settings_get_print_pages (print_settings);
+	
+	switch (print_pages) {
+	case GTK_PRINT_PAGES_CURRENT:
+		export->ranges = &export->one_range;
+		
+		export->ranges[0].start = export->current_page;
+		export->ranges[0].end = export->current_page;
+		export->n_ranges = 1;
+				
+		break;
+	case GTK_PRINT_PAGES_RANGES: {
+		gint i;
+		
+		export->ranges = gtk_print_settings_get_page_ranges (print_settings, &export->n_ranges);
+		for (i = 0; i < export->n_ranges; i++)
+			if (export->ranges[i].end == -1 || export->ranges[i].end >= export->n_pages)
+				export->ranges[i].end = export->n_pages - 1;
+	}
+		break;
+	case GTK_PRINT_PAGES_ALL:
+		export->ranges = &export->one_range;
+
+		export->ranges[0].start = 0;
+		export->ranges[0].end = export->n_pages - 1;
+		export->n_ranges = 1;
+		
+		break;
+	}
+	clamp_ranges (export);
+
+	export->page_set = gtk_print_settings_get_page_set (print_settings);
+
+	width = gtk_page_setup_get_paper_width (page_setup, GTK_UNIT_POINTS);
+	height = gtk_page_setup_get_paper_height (page_setup, GTK_UNIT_POINTS);
+	scale = gtk_print_settings_get_scale (print_settings) * 0.01;
+	if (scale != 1.0) {
+		width *= scale;
+		height *= scale;
+	}
+
+	export->pages_per_sheet = gtk_print_settings_get_number_up (print_settings);
+	
+	export->copies = gtk_print_settings_get_n_copies (print_settings);
+	export->collate = gtk_print_settings_get_collate (print_settings);
+	export->reverse = gtk_print_settings_get_reverse (print_settings);
+
+	if (export->collate) {
+		export->uncollated_copies = export->copies;
+		export->collated_copies = 1;
+	} else {
+		export->uncollated_copies = 1;
+		export->collated_copies = export->copies;
+	}
+
+	if (export->reverse) {
+		export->range = export->n_ranges - 1;
+		export->inc = -1;
+	} else {
+		export->range = 0;
+		export->inc = 1;
+	}
+	find_range (export);
+
+	export->page = export->start - export->inc;
+	export->collated = export->collated_copies - 1;
+
+	first_page = get_first_page (export);
+	last_page = get_last_page (export);
+
+	fc.format = g_ascii_strcasecmp (file_format, "pdf") == 0 ?
+		EV_FILE_FORMAT_PDF : EV_FILE_FORMAT_PS;
+	fc.filename = export->temp_file;
+	fc.first_page = MIN (first_page, last_page);
+	fc.last_page = MAX (first_page, last_page);
+	fc.paper_width = width;
+	fc.paper_height = height;
+	fc.duplex = FALSE;
+	fc.pages_per_sheet = MAX (1, export->pages_per_sheet);
+
+	ev_document_doc_mutex_lock ();
+	ev_file_exporter_begin (EV_FILE_EXPORTER (op->document), &fc);
+	ev_document_doc_mutex_unlock ();
+
+	export->idle_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE,
+					   (GSourceFunc)export_print_page,
+					   export,
+					   (GDestroyNotify)export_print_page_idle_finished);
+	
+	gtk_widget_destroy (GTK_WIDGET (dialog));
+
+	return TRUE;
+}
+
+static void
+ev_print_operation_export_run (EvPrintOperation *op,
+			       GtkWindow        *parent)
+{
+	EvPrintOperationExport *export = EV_PRINT_OPERATION_EXPORT (op);
+	GtkWidget              *dialog;
+	GtkPrintCapabilities    capabilities;
+
+	export->parent_window = parent;
+	export->error = NULL;
+	
+	dialog = gtk_print_unix_dialog_new (_("Print"), parent);
+	gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
+	
+	capabilities = GTK_PRINT_CAPABILITY_PREVIEW |
+		ev_file_exporter_get_capabilities (EV_FILE_EXPORTER (op->document));
+	gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (dialog),
+						       capabilities);
+
+	gtk_print_unix_dialog_set_current_page (GTK_PRINT_UNIX_DIALOG (dialog),
+						export->current_page);
+	
+	gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (dialog),
+					    export->print_settings);
+	
+	if (export->page_setup)
+		gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (dialog),
+						      export->page_setup);
+	
+	g_signal_connect (G_OBJECT (dialog), "response",
+			  G_CALLBACK (ev_print_operation_export_print_dialog_response_cb),
+			  export);
+
+	gtk_window_present (GTK_WINDOW (dialog));
+}
+
+static void
+ev_print_operation_export_cancel (EvPrintOperation *op)
+{
+	EvPrintOperationExport *export = EV_PRINT_OPERATION_EXPORT (op);
+
+	if (export->job_export) {
+		ev_job_cancel (export->job_export);
+	}
+}
+
+static void
+ev_print_operation_export_get_error (EvPrintOperation *op,
+				     GError          **error)
+{
+	EvPrintOperationExport *export = EV_PRINT_OPERATION_EXPORT (op);
+
+	g_propagate_error (error, export->error);
+	export->error = NULL;
+}
+
+static void
+ev_print_operation_export_finalize (GObject *object)
+{
+	EvPrintOperationExport *export = EV_PRINT_OPERATION_EXPORT (object);
+
+	if (export->idle_id > 0) {
+		g_source_remove (export->idle_id);
+		export->idle_id = 0;
+	}
+
+	if (export->fd != -1) {
+		close (export->fd);
+		export->fd = -1;
+	}
+	
+	if (export->ranges) {
+		if (export->ranges != &export->one_range)
+			g_free (export->ranges);
+		export->ranges = NULL;
+		export->n_ranges = 0;
+	}
+
+	if (export->temp_file) {
+		g_free (export->temp_file);
+		export->temp_file = NULL;
+	}
+
+	if (export->job_name) {
+		g_free (export->job_name);
+		export->job_name = NULL;
+	}
+
+	if (export->job_export) {
+		if (!ev_job_is_finished (export->job_export))
+			ev_job_cancel (export->job_export);
+		g_signal_handlers_disconnect_by_func (export->job_export,
+						      export_job_finished,
+						      export);
+		g_signal_handlers_disconnect_by_func (export->job_export,
+						      export_job_cancelled,
+						      export);
+		g_object_unref (export->job_export);
+		export->job_export = NULL;
+	}
+
+	if (export->error) {
+		g_error_free (export->error);
+		export->error = NULL;
+	}
+
+	if (export->print_settings) {
+		g_object_unref (export->print_settings);
+		export->print_settings = NULL;
+	}
+
+	if (export->page_setup) {
+		g_object_unref (export->page_setup);
+		export->page_setup = NULL;
+	}
+
+	if (export->printer) {
+		g_object_unref (export->printer);
+		export->printer = NULL;
+	}
+
+	(* G_OBJECT_CLASS (ev_print_operation_export_parent_class)->finalize) (object);
+}
+
+static void
+ev_print_operation_export_init (EvPrintOperationExport *export)
+{
+}
+
+static GObject *
+ev_print_operation_export_constructor (GType                  type,
+				       guint                  n_construct_properties,
+				       GObjectConstructParam *construct_params)
+{
+	GObject                *object;
+	EvPrintOperationExport *export;
+	EvPrintOperation       *op;
+	
+	object = G_OBJECT_CLASS (ev_print_operation_export_parent_class)->constructor (type,
+										       n_construct_properties,
+										       construct_params);
+	export = EV_PRINT_OPERATION_EXPORT (object);
+	op = EV_PRINT_OPERATION (object);
+	export->n_pages = ev_page_cache_get_n_pages (ev_page_cache_get (op->document));
+
+	return object;
+}
+
+static void
+ev_print_operation_export_class_init (EvPrintOperationExportClass *klass)
+{
+	GObjectClass          *g_object_class = G_OBJECT_CLASS (klass);
+	EvPrintOperationClass *ev_print_op_class = EV_PRINT_OPERATION_CLASS (klass);
+
+	ev_print_op_class->set_current_page = ev_print_operation_export_set_current_page;
+	ev_print_op_class->set_print_settings = ev_print_operation_export_set_print_settings;
+	ev_print_op_class->get_print_settings = ev_print_operation_export_get_print_settings;
+	ev_print_op_class->set_default_page_setup = ev_print_operation_export_set_default_page_setup;
+	ev_print_op_class->get_default_page_setup = ev_print_operation_export_get_default_page_setup;
+	ev_print_op_class->set_job_name = ev_print_operation_export_set_job_name;
+	ev_print_op_class->run = ev_print_operation_export_run;
+	ev_print_op_class->cancel = ev_print_operation_export_cancel;
+	ev_print_op_class->get_error = ev_print_operation_export_get_error;
+
+	g_object_class->constructor = ev_print_operation_export_constructor;
+	g_object_class->finalize = ev_print_operation_export_finalize;
+}
+
+/* Factory method */
+EvPrintOperation *
+ev_print_operation_new (EvDocument *document)
+{
+	/* TODO: EvPrintOperationPrint */
+
+	return EV_PRINT_OPERATION (g_object_new (EV_TYPE_PRINT_OPERATION_EXPORT,
+						 "document", document, NULL));
+}