--- /dev/null
+/* GTK - The GIMP Toolkit
+ * gtkprintbackendpdf.c: Test implementation of GtkPrintBackend
+ * for printing to a test
+ * Copyright (C) 2007, Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <config.h>
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <errno.h>
+#include <cairo.h>
+#include <cairo-pdf.h>
+#include <cairo-ps.h>
+
+#include <glib/gi18n-lib.h>
+
+#include "gtkprintoperation.h"
+
+#include "gtkprintbackend.h"
+#include "gtkprintbackendtest.h"
+
+#include "gtkprinter.h"
+#include "gtkprinter-private.h"
+
+typedef struct _GtkPrintBackendTestClass GtkPrintBackendTestClass;
+
+#define GTK_PRINT_BACKEND_TEST_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_PRINT_BACKEND_TEST, GtkPrintBackendTestClass))
+#define GTK_IS_PRINT_BACKEND_TEST_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PRINT_BACKEND_TEST))
+#define GTK_PRINT_BACKENDTEST_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_PRINT_BACKEND_TEST, GtkPrintBackendTestClass))
+
+#define _STREAM_MAX_CHUNK_SIZE 8192
+
+static GType print_backend_test_type = 0;
+
+struct _GtkPrintBackendTestClass
+{
+ GtkPrintBackendClass parent_class;
+};
+
+struct _GtkPrintBackendTest
+{
+ GtkPrintBackend parent_instance;
+};
+
+typedef enum
+{
+ FORMAT_PDF,
+ FORMAT_PS,
+ N_FORMATS
+} OutputFormat;
+
+static const gchar* formats[N_FORMATS] =
+{
+ "pdf",
+ "ps"
+};
+
+static GObjectClass *backend_parent_class;
+
+static void gtk_print_backend_test_class_init (GtkPrintBackendTestClass *class);
+static void gtk_print_backend_test_init (GtkPrintBackendTest *impl);
+static void test_printer_get_settings_from_options (GtkPrinter *printer,
+ GtkPrinterOptionSet *options,
+ GtkPrintSettings *settings);
+static GtkPrinterOptionSet *test_printer_get_options (GtkPrinter *printer,
+ GtkPrintSettings *settings,
+ GtkPageSetup *page_setup,
+ GtkPrintCapabilities capabilities);
+static void test_printer_prepare_for_print (GtkPrinter *printer,
+ GtkPrintJob *print_job,
+ GtkPrintSettings *settings,
+ GtkPageSetup *page_setup);
+static void gtk_print_backend_test_print_stream (GtkPrintBackend *print_backend,
+ GtkPrintJob *job,
+ GIOChannel *data_io,
+ GtkPrintJobCompleteFunc callback,
+ gpointer user_data,
+ GDestroyNotify dnotify);
+static cairo_surface_t * test_printer_create_cairo_surface (GtkPrinter *printer,
+ GtkPrintSettings *settings,
+ gdouble width,
+ gdouble height,
+ GIOChannel *cache_io);
+
+static void test_printer_request_details (GtkPrinter *printer);
+
+static void
+gtk_print_backend_test_register_type (GTypeModule *module)
+{
+ static const GTypeInfo print_backend_test_info =
+ {
+ sizeof (GtkPrintBackendTestClass),
+ NULL, /* base_init */
+ NULL, /* base_finalize */
+ (GClassInitFunc) gtk_print_backend_test_class_init,
+ NULL, /* class_finalize */
+ NULL, /* class_data */
+ sizeof (GtkPrintBackendTest),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) gtk_print_backend_test_init,
+ };
+
+ print_backend_test_type = g_type_module_register_type (module,
+ GTK_TYPE_PRINT_BACKEND,
+ "GtkPrintBackendTest",
+ &print_backend_test_info, 0);
+}
+
+G_MODULE_EXPORT void
+pb_module_init (GTypeModule *module)
+{
+ gtk_print_backend_test_register_type (module);
+}
+
+G_MODULE_EXPORT void
+pb_module_exit (void)
+{
+
+}
+
+G_MODULE_EXPORT GtkPrintBackend *
+pb_module_create (void)
+{
+ return gtk_print_backend_test_new ();
+}
+
+/*
+ * GtkPrintBackendTest
+ */
+GType
+gtk_print_backend_test_get_type (void)
+{
+ return print_backend_test_type;
+}
+
+/**
+ * gtk_print_backend_test_new:
+ *
+ * Creates a new #GtkPrintBackendTest object. #GtkPrintBackendTest
+ * implements the #GtkPrintBackend interface with direct access to
+ * the testsystem using Unix/Linux API calls
+ *
+ * Return value: the new #GtkPrintBackendTest object
+ **/
+GtkPrintBackend *
+gtk_print_backend_test_new (void)
+{
+ return g_object_new (GTK_TYPE_PRINT_BACKEND_TEST, NULL);
+}
+
+static void
+gtk_print_backend_test_class_init (GtkPrintBackendTestClass *class)
+{
+ GtkPrintBackendClass *backend_class = GTK_PRINT_BACKEND_CLASS (class);
+
+ backend_parent_class = g_type_class_peek_parent (class);
+
+ backend_class->print_stream = gtk_print_backend_test_print_stream;
+ backend_class->printer_create_cairo_surface = test_printer_create_cairo_surface;
+ backend_class->printer_get_options = test_printer_get_options;
+ backend_class->printer_get_settings_from_options = test_printer_get_settings_from_options;
+ backend_class->printer_prepare_for_print = test_printer_prepare_for_print;
+ backend_class->printer_request_details = test_printer_request_details;
+}
+
+/* return N_FORMATS if no explicit format in the settings */
+static OutputFormat
+format_from_settings (GtkPrintSettings *settings)
+{
+ const gchar *value;
+ gint i;
+
+ if (settings == NULL)
+ return N_FORMATS;
+
+ value = gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT);
+ if (value == NULL)
+ return N_FORMATS;
+
+ for (i = 0; i < N_FORMATS; ++i)
+ if (strcmp (value, formats[i]) == 0)
+ break;
+
+ g_assert (i < N_FORMATS);
+
+ return (OutputFormat) i;
+}
+
+static gchar *
+output_test_from_settings (GtkPrintSettings *settings,
+ const gchar *default_format)
+{
+ gchar *uri = NULL;
+
+ if (settings)
+ uri = g_strdup (gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_OUTPUT_URI));
+
+ if (uri == NULL)
+ {
+ const gchar *extension;
+ gchar *name, *locale_name, *path;
+
+ if (default_format)
+ extension = default_format;
+ else
+ {
+ OutputFormat format;
+
+ format = format_from_settings (settings);
+ extension = format == FORMAT_PS ? "ps" : "pdf";
+ }
+
+ /* default filename used for print-to-test */
+ name = g_strdup_printf (_("test-output.%s"), extension);
+ locale_name = g_filename_from_utf8 (name, -1, NULL, NULL, NULL);
+ g_free (name);
+
+ if (locale_name != NULL)
+ {
+ path = g_build_filename (g_get_current_dir (), locale_name, NULL);
+ g_free (locale_name);
+
+ uri = g_filename_to_uri (path, NULL, NULL);
+ g_free (path);
+ }
+ }
+
+ return uri;
+}
+
+static cairo_status_t
+_cairo_write (void *closure,
+ const unsigned char *data,
+ unsigned int length)
+{
+ GIOChannel *io = (GIOChannel *)closure;
+ gsize written;
+ GError *error;
+
+ error = NULL;
+
+ GTK_NOTE (PRINTING,
+ g_print ("TEST Backend: Writing %i byte chunk to temp test\n", length));
+
+ while (length > 0)
+ {
+ g_io_channel_write_chars (io, (const gchar *) data, length, &written, &error);
+
+ if (error != NULL)
+ {
+ GTK_NOTE (PRINTING,
+ g_print ("TEST Backend: Error writing to temp test, %s\n", error->message));
+
+ g_error_free (error);
+ return CAIRO_STATUS_WRITE_ERROR;
+ }
+
+ GTK_NOTE (PRINTING,
+ g_print ("TEST Backend: Wrote %i bytes to temp test\n", (int)written));
+
+ data += written;
+ length -= written;
+ }
+
+ return CAIRO_STATUS_SUCCESS;
+}
+
+
+static cairo_surface_t *
+test_printer_create_cairo_surface (GtkPrinter *printer,
+ GtkPrintSettings *settings,
+ gdouble width,
+ gdouble height,
+ GIOChannel *cache_io)
+{
+ cairo_surface_t *surface;
+ OutputFormat format;
+
+ format = format_from_settings (settings);
+
+ if (format == FORMAT_PS)
+ surface = cairo_ps_surface_create_for_stream (_cairo_write, cache_io, width, height);
+ else
+ surface = cairo_pdf_surface_create_for_stream (_cairo_write, cache_io, width, height);
+
+ /* TODO: DPI from settings object? */
+ cairo_surface_set_fallback_resolution (surface, 300, 300);
+
+ return surface;
+}
+
+typedef struct {
+ GtkPrintBackend *backend;
+ GtkPrintJobCompleteFunc callback;
+ GtkPrintJob *job;
+ GIOChannel *target_io;
+ gpointer user_data;
+ GDestroyNotify dnotify;
+} _PrintStreamData;
+
+static void
+test_print_cb (GtkPrintBackendTest *print_backend,
+ GError *error,
+ gpointer user_data)
+{
+ _PrintStreamData *ps = (_PrintStreamData *) user_data;
+
+ if (ps->target_io != NULL)
+ g_io_channel_unref (ps->target_io);
+
+ if (ps->callback)
+ ps->callback (ps->job, ps->user_data, error);
+
+ if (ps->dnotify)
+ ps->dnotify (ps->user_data);
+
+ gtk_print_job_set_status (ps->job,
+ (error != NULL)?GTK_PRINT_STATUS_FINISHED_ABORTED:GTK_PRINT_STATUS_FINISHED);
+
+ if (ps->job)
+ g_object_unref (ps->job);
+
+ g_free (ps);
+}
+
+static gboolean
+test_write (GIOChannel *source,
+ GIOCondition con,
+ gpointer user_data)
+{
+ gchar buf[_STREAM_MAX_CHUNK_SIZE];
+ gsize bytes_read;
+ GError *error;
+ GIOStatus read_status;
+ _PrintStreamData *ps = (_PrintStreamData *) user_data;
+
+ error = NULL;
+
+ read_status =
+ g_io_channel_read_chars (source,
+ buf,
+ _STREAM_MAX_CHUNK_SIZE,
+ &bytes_read,
+ &error);
+
+ if (read_status != G_IO_STATUS_ERROR)
+ {
+ gsize bytes_written;
+
+ g_io_channel_write_chars (ps->target_io,
+ buf,
+ bytes_read,
+ &bytes_written,
+ &error);
+ }
+
+ if (error != NULL || read_status == G_IO_STATUS_EOF)
+ {
+ test_print_cb (GTK_PRINT_BACKEND_TEST (ps->backend), error, user_data);
+
+ if (error != NULL)
+ {
+ GTK_NOTE (PRINTING,
+ g_print ("TEST Backend: %s\n", error->message));
+
+ g_error_free (error);
+ }
+
+ return FALSE;
+ }
+
+ GTK_NOTE (PRINTING,
+ g_print ("TEST Backend: Writing %i byte chunk to target test\n", (int)bytes_read));
+
+ return TRUE;
+}
+
+static void
+gtk_print_backend_test_print_stream (GtkPrintBackend *print_backend,
+ GtkPrintJob *job,
+ GIOChannel *data_io,
+ GtkPrintJobCompleteFunc callback,
+ gpointer user_data,
+ GDestroyNotify dnotify)
+{
+ GError *internal_error = NULL;
+ GtkPrinter *printer;
+ _PrintStreamData *ps;
+ GtkPrintSettings *settings;
+ gchar *uri, *testname;
+
+ printer = gtk_print_job_get_printer (job);
+ settings = gtk_print_job_get_settings (job);
+
+ ps = g_new0 (_PrintStreamData, 1);
+ ps->callback = callback;
+ ps->user_data = user_data;
+ ps->dnotify = dnotify;
+ ps->job = g_object_ref (job);
+ ps->backend = print_backend;
+
+ internal_error = NULL;
+ uri = output_test_from_settings (settings, NULL);
+ testname = g_filename_from_uri (uri, NULL, &internal_error);
+ g_free (uri);
+
+ if (testname == NULL)
+ goto error;
+
+ ps->target_io = g_io_channel_new_file (testname, "w", &internal_error);
+
+ g_free (testname);
+
+ if (internal_error == NULL)
+ g_io_channel_set_encoding (ps->target_io, NULL, &internal_error);
+
+error:
+ if (internal_error != NULL)
+ {
+ test_print_cb (GTK_PRINT_BACKEND_TEST (print_backend),
+ internal_error, ps);
+
+ g_error_free (internal_error);
+ return;
+ }
+
+ g_io_add_watch (data_io,
+ G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP,
+ (GIOFunc) test_write,
+ ps);
+}
+
+static void
+gtk_print_backend_test_init (GtkPrintBackendTest *backend)
+{
+ GtkPrinter *printer;
+ int i;
+
+ /* make 100 of these printers */
+ for (i=0; i<100; i++)
+ {
+ char *name;
+ name = g_strdup_printf ("%s %i", _("Print to Test Printer"), i);
+ printer = g_object_new (GTK_TYPE_PRINTER,
+ "name", name,
+ "backend", backend,
+ "is-virtual", FALSE, /* treat printer like a real one*/
+ NULL);
+ g_free(name);
+
+ gtk_printer_set_has_details (printer, FALSE);
+ gtk_printer_set_icon_name (printer, "gtk-delete"); /* use a delete icon just for fun */
+ gtk_printer_set_is_active (printer, TRUE);
+
+ gtk_print_backend_add_printer (GTK_PRINT_BACKEND (backend), printer);
+ g_object_unref (printer);
+ }
+
+ gtk_print_backend_set_list_done (GTK_PRINT_BACKEND (backend));
+}
+
+static GtkPrinterOptionSet *
+test_printer_get_options (GtkPrinter *printer,
+ GtkPrintSettings *settings,
+ GtkPageSetup *page_setup,
+ GtkPrintCapabilities capabilities)
+{
+ GtkPrinterOptionSet *set;
+ GtkPrinterOption *option;
+ const gchar *n_up[] = { "1" };
+ const gchar *format_names[N_FORMATS] = { N_("PDF"), N_("Postscript") };
+ const gchar *supported_formats[N_FORMATS];
+ gchar *display_format_names[N_FORMATS];
+ gint n_formats = 0;
+ OutputFormat format;
+ gchar *uri;
+ gint current_format = 0;
+
+ format = format_from_settings (settings);
+
+ set = gtk_printer_option_set_new ();
+
+ option = gtk_printer_option_new ("gtk-n-up", _("Pages per _sheet:"), GTK_PRINTER_OPTION_TYPE_PICKONE);
+ gtk_printer_option_choices_from_array (option, G_N_ELEMENTS (n_up),
+ (char **) n_up, (char **) n_up /* FIXME i18n (localised digits)! */);
+ gtk_printer_option_set (option, "1");
+ gtk_printer_option_set_add (set, option);
+ g_object_unref (option);
+
+ return set;
+}
+
+static void
+test_printer_get_settings_from_options (GtkPrinter *printer,
+ GtkPrinterOptionSet *options,
+ GtkPrintSettings *settings)
+{
+}
+
+static void
+test_printer_prepare_for_print (GtkPrinter *printer,
+ GtkPrintJob *print_job,
+ GtkPrintSettings *settings,
+ GtkPageSetup *page_setup)
+{
+ gdouble scale;
+
+ print_job->print_pages = gtk_print_settings_get_print_pages (settings);
+ print_job->page_ranges = NULL;
+ print_job->num_page_ranges = 0;
+
+ if (print_job->print_pages == GTK_PRINT_PAGES_RANGES)
+ print_job->page_ranges =
+ gtk_print_settings_get_page_ranges (settings,
+ &print_job->num_page_ranges);
+
+ print_job->collate = gtk_print_settings_get_collate (settings);
+ print_job->reverse = gtk_print_settings_get_reverse (settings);
+ print_job->num_copies = gtk_print_settings_get_n_copies (settings);
+
+ scale = gtk_print_settings_get_scale (settings);
+ if (scale != 100.0)
+ print_job->scale = scale/100.0;
+
+ print_job->page_set = gtk_print_settings_get_page_set (settings);
+ print_job->rotate_to_orientation = TRUE;
+}
+
+static gboolean
+test_printer_details_aquired_cb (GtkPrinter *printer)
+{
+ gboolean success;
+ gint weight;
+
+ /* weight twords success */
+ weight = g_random_int_range(0, 100);
+
+ success = FALSE;
+ if (weight < 75)
+ success = TRUE;
+
+ g_message ("success %i", success);
+ gtk_printer_set_has_details (printer, success);
+ g_signal_emit_by_name (printer, "details-acquired", success);
+
+ return FALSE;
+}
+
+static void
+test_printer_request_details (GtkPrinter *printer)
+{
+ gint weight;
+ gint time;
+ /* set the timer to succeed or fail at a random time interval */
+ /* weight twords the shorter end */
+ weight = g_random_int_range(0, 100);
+ if (weight < 50)
+ time = g_random_int_range(0, 2);
+ else if (weight < 75)
+ time = g_random_int_range(1, 5);
+ else
+ time = g_random_int_range(1, 10);
+
+ g_message ("Gathering details in %i seconds", time);
+
+ if (time == 0)
+ time = 10;
+ else
+ time *= 1000;
+
+ g_timeout_add(time,
+ (GSourceFunc) test_printer_details_aquired_cb,
+ printer
+ );
+}
+
+
projects / ~andy / gtk / blobdiff