[evince] [libview] Add a new job for printing using cairo

[Carlos Garcia Campos <carlosgc src gnome org>]

commit cc0f0ef258d6540cb2a264a1a53a717d836c79d4
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Sun May 17 16:29:16 2009 +0200

    [libview] Add a new job for printing using cairo
---
 libview/ev-jobs.c |  112 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 libview/ev-jobs.h |   29 ++++++++++++++
 2 files changed, 141 insertions(+), 0 deletions(-)

diff --git a/libview/ev-jobs.c b/libview/ev-jobs.c
index b5b4282..55e76a4 100644
--- a/libview/ev-jobs.c
+++ b/libview/ev-jobs.c
@@ -33,6 +33,7 @@
 #include "ev-document-security.h"
 #include "ev-document-find.h"
 #include "ev-document-layers.h"
+#include "ev-document-print.h"
 #include "ev-document-annotations.h"
 #include "ev-debug.h"
 
@@ -61,6 +62,8 @@ static void ev_job_layers_init            (EvJobLayers           *job);
 static void ev_job_layers_class_init      (EvJobLayersClass      *class);
 static void ev_job_export_init            (EvJobExport           *job);
 static void ev_job_export_class_init      (EvJobExportClass      *class);
+static void ev_job_print_init             (EvJobPrint            *job);
+static void ev_job_print_class_init       (EvJobPrintClass       *class);
 
 enum {
 	CANCELLED,
@@ -99,6 +102,7 @@ G_DEFINE_TYPE (EvJobSave, ev_job_save, EV_TYPE_JOB)
 G_DEFINE_TYPE (EvJobFind, ev_job_find, EV_TYPE_JOB)
 G_DEFINE_TYPE (EvJobLayers, ev_job_layers, EV_TYPE_JOB)
 G_DEFINE_TYPE (EvJobExport, ev_job_export, EV_TYPE_JOB)
+G_DEFINE_TYPE (EvJobPrint, ev_job_print, EV_TYPE_JOB)
 
 /* EvJob */
 static void
@@ -1369,3 +1373,111 @@ ev_job_export_set_page (EvJobExport *job,
 {
 	job->page = page;
 }
+
+/* EvJobPrint */
+static void
+ev_job_print_init (EvJobPrint *job)
+{
+	EV_JOB (job)->run_mode = EV_JOB_RUN_THREAD;
+	job->page = -1;
+}
+
+static void
+ev_job_print_dispose (GObject *object)
+{
+	EvJobPrint *job;
+
+	ev_debug_message (DEBUG_JOBS, NULL);
+
+	job = EV_JOB_PRINT (object);
+
+	if (job->cr) {
+		cairo_destroy (job->cr);
+		job->cr = NULL;
+	}
+
+	(* G_OBJECT_CLASS (ev_job_print_parent_class)->dispose) (object);
+}
+
+static gboolean
+ev_job_print_run (EvJob *job)
+{
+	EvJobPrint     *job_print = EV_JOB_PRINT (job);
+	EvPage         *ev_page;
+	cairo_status_t  cr_status;
+
+	g_assert (job_print->page != -1);
+	g_assert (job_print->cr != NULL);
+
+	ev_debug_message (DEBUG_JOBS, NULL);
+	ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job);
+
+	job->failed = FALSE;
+	job->finished = FALSE;
+	g_clear_error (&job->error);
+
+	ev_document_doc_mutex_lock ();
+
+	ev_page = ev_document_get_page (job->document, job_print->page);
+	ev_document_print_print_page (EV_DOCUMENT_PRINT (job->document),
+				      ev_page, job_print->cr);
+	g_object_unref (ev_page);
+
+	ev_document_doc_mutex_unlock ();
+
+	cr_status = cairo_status (job_print->cr);
+	if (cr_status == CAIRO_STATUS_SUCCESS) {
+		ev_job_succeeded (job);
+	} else {
+		ev_job_failed (job,
+			       GTK_PRINT_ERROR,
+			       GTK_PRINT_ERROR_GENERAL,
+			       _("Failed to print page %d: %s"),
+			       job_print->page,
+			       cairo_status_to_string (cr_status));
+	}
+
+	return FALSE;
+}
+
+static void
+ev_job_print_class_init (EvJobPrintClass *class)
+{
+	GObjectClass *oclass = G_OBJECT_CLASS (class);
+	EvJobClass   *job_class = EV_JOB_CLASS (class);
+
+	oclass->dispose = ev_job_print_dispose;
+	job_class->run = ev_job_print_run;
+}
+
+EvJob *
+ev_job_print_new (EvDocument *document)
+{
+	EvJob *job;
+
+	ev_debug_message (DEBUG_JOBS, NULL);
+
+	job = g_object_new (EV_TYPE_JOB_PRINT, NULL);
+	job->document = g_object_ref (document);
+
+	return job;
+}
+
+void
+ev_job_print_set_page (EvJobPrint *job,
+		       gint        page)
+{
+	job->page = page;
+}
+
+void
+ev_job_print_set_cairo (EvJobPrint *job,
+			cairo_t    *cr)
+{
+	if (job->cr == cr)
+		return;
+
+	if (job->cr)
+		cairo_destroy (job->cr);
+	job->cr = cr ? cairo_reference (cr) : NULL;
+}
diff --git a/libview/ev-jobs.h b/libview/ev-jobs.h
index 17f1b3c..144ec06 100644
--- a/libview/ev-jobs.h
+++ b/libview/ev-jobs.h
@@ -27,6 +27,7 @@
 
 #include <gio/gio.h>
 #include <gtk/gtk.h>
+#include <cairo.h>
 
 #include <evince-document.h>
 
@@ -65,6 +66,9 @@ typedef struct _EvJobLayersClass EvJobLayersClass;
 typedef struct _EvJobExport EvJobExport;
 typedef struct _EvJobExportClass EvJobExportClass;
 
+typedef struct _EvJobPrint EvJobPrint;
+typedef struct _EvJobPrintClass EvJobPrintClass;
+
 #define EV_TYPE_JOB		     	     (ev_job_get_type())
 #define EV_JOB(object)		             (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB, EvJob))
 #define EV_JOB_CLASS(klass)	             (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB, EvJobClass))
@@ -121,6 +125,11 @@ typedef struct _EvJobExportClass EvJobExportClass;
 #define EV_JOB_EXPORT_CLASS(klass)            (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_EXPORT, EvJobExportClass))
 #define EV_IS_JOB_EXPORT(object)              (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_EXPORT))
 
+#define EV_TYPE_JOB_PRINT                    (ev_job_print_get_type())
+#define EV_JOB_PRINT(object)                 (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_PRINT, EvJobPrint))
+#define EV_JOB_PRINT_CLASS(klass)            (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_PRINT, EvJobPrintClass))
+#define EV_IS_JOB_PRINT(object)              (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_PRINT))
+
 typedef enum {
 	EV_JOB_RUN_THREAD,
 	EV_JOB_RUN_MAIN_LOOP
@@ -332,6 +341,19 @@ struct _EvJobExportClass
 	EvJobClass parent_class;
 };
 
+struct _EvJobPrint
+{
+	EvJob parent;
+
+	gint page;
+	cairo_t *cr;
+};
+
+struct _EvJobPrintClass
+{
+	EvJobClass parent_class;
+};
+
 /* Base job class */
 GType           ev_job_get_type           (void) G_GNUC_CONST;
 gboolean        ev_job_run                (EvJob          *job);
@@ -418,6 +440,13 @@ GType           ev_job_export_get_type    (void) G_GNUC_CONST;
 EvJob          *ev_job_export_new         (EvDocument     *document);
 void            ev_job_export_set_page    (EvJobExport    *job,
 					   gint            page);
+/* EvJobPrint */
+GType           ev_job_print_get_type    (void) G_GNUC_CONST;
+EvJob          *ev_job_print_new         (EvDocument     *document);
+void            ev_job_print_set_page    (EvJobPrint     *job,
+					  gint            page);
+void            ev_job_print_set_cairo   (EvJobPrint     *job,
+					  cairo_t        *cr);
 
 G_END_DECLS