forked from AuroraMiddleware/gtk
bc1dbd58d5
2006-06-21 Matthias Clasen <mclasen@redhat.com> * gtk/gtkprintbackend.h: * gtk/gtkprintbackend.c (gtk_print_backend_print_stream): Add an GError parameter. * modules/printbackends/file/gtkprintbackendfile.c (gtk_print_backend_file_print_stream): * modules/printbackends/lpr/gtkprintbackendlpr.c (gtk_print_backend_lpr_print_stream): * modules/printbackends/cups/gtkprintbackendcups.c (gtk_print_backend_cups_print_stream): * gtk/gtkprintjob.c (gtk_print_job_send): Update all callers and implementations.
449 lines
13 KiB
C
449 lines
13 KiB
C
/* GTK - The GIMP Toolkit
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* gtkprintbackendpdf.c: Default implementation of GtkPrintBackend
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* for printing to a file
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* Copyright (C) 2003, Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <cairo.h>
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#include <cairo-pdf.h>
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#include <glib/gi18n-lib.h>
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#include "gtkprintoperation.h"
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#include "gtkprintbackend.h"
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#include "gtkprintbackendfile.h"
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#include "gtkprinter.h"
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#include "gtkprinter-private.h"
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typedef struct _GtkPrintBackendFileClass GtkPrintBackendFileClass;
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#define GTK_PRINT_BACKEND_FILE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_PRINT_BACKEND_FILE, GtkPrintBackendFileClass))
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#define GTK_IS_PRINT_BACKEND_FILE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PRINT_BACKEND_FILE))
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#define GTK_PRINT_BACKEND_FILE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_PRINT_BACKEND_FILE, GtkPrintBackendFileClass))
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#define _STREAM_MAX_CHUNK_SIZE 8192
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static GType print_backend_file_type = 0;
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struct _GtkPrintBackendFileClass
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{
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GtkPrintBackendClass parent_class;
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};
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struct _GtkPrintBackendFile
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{
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GtkPrintBackend parent_instance;
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};
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static GObjectClass *backend_parent_class;
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static void gtk_print_backend_file_class_init (GtkPrintBackendFileClass *class);
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static void gtk_print_backend_file_init (GtkPrintBackendFile *impl);
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static void file_printer_get_settings_from_options (GtkPrinter *printer,
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GtkPrinterOptionSet *options,
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GtkPrintSettings *settings);
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static GtkPrinterOptionSet *file_printer_get_options (GtkPrinter *printer,
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GtkPrintSettings *settings,
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GtkPageSetup *page_setup,
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GtkPrintCapabilities capabilities);
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static void file_printer_prepare_for_print (GtkPrinter *printer,
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GtkPrintJob *print_job,
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GtkPrintSettings *settings,
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GtkPageSetup *page_setup);
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static void gtk_print_backend_file_print_stream (GtkPrintBackend *print_backend,
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GtkPrintJob *job,
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gint data_fd,
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GtkPrintJobCompleteFunc callback,
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gpointer user_data,
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GDestroyNotify dnotify,
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GError **error);
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static cairo_surface_t * file_printer_create_cairo_surface (GtkPrinter *printer,
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GtkPrintSettings *settings,
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gdouble width,
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gdouble height,
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gint cache_fd);
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static void
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gtk_print_backend_file_register_type (GTypeModule *module)
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{
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static const GTypeInfo print_backend_file_info =
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{
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sizeof (GtkPrintBackendFileClass),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) gtk_print_backend_file_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GtkPrintBackendFile),
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0, /* n_preallocs */
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(GInstanceInitFunc) gtk_print_backend_file_init,
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};
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print_backend_file_type = g_type_module_register_type (module,
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GTK_TYPE_PRINT_BACKEND,
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"GtkPrintBackendFile",
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&print_backend_file_info, 0);
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}
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G_MODULE_EXPORT void
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pb_module_init (GTypeModule *module)
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{
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gtk_print_backend_file_register_type (module);
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}
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G_MODULE_EXPORT void
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pb_module_exit (void)
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{
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}
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G_MODULE_EXPORT GtkPrintBackend *
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pb_module_create (void)
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{
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return gtk_print_backend_file_new ();
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}
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/*
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* GtkPrintBackendFile
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*/
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GType
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gtk_print_backend_file_get_type (void)
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{
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return print_backend_file_type;
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}
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/**
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* gtk_print_backend_file_new:
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*
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* Creates a new #GtkPrintBackendFile object. #GtkPrintBackendFile
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* implements the #GtkPrintBackend interface with direct access to
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* the filesystem using Unix/Linux API calls
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*
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* Return value: the new #GtkPrintBackendFile object
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**/
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GtkPrintBackend *
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gtk_print_backend_file_new (void)
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{
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return g_object_new (GTK_TYPE_PRINT_BACKEND_FILE, NULL);
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}
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static void
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gtk_print_backend_file_class_init (GtkPrintBackendFileClass *class)
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{
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GtkPrintBackendClass *backend_class = GTK_PRINT_BACKEND_CLASS (class);
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backend_parent_class = g_type_class_peek_parent (class);
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backend_class->print_stream = gtk_print_backend_file_print_stream;
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backend_class->printer_create_cairo_surface = file_printer_create_cairo_surface;
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backend_class->printer_get_options = file_printer_get_options;
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backend_class->printer_get_settings_from_options = file_printer_get_settings_from_options;
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backend_class->printer_prepare_for_print = file_printer_prepare_for_print;
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}
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static cairo_status_t
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_cairo_write (void *closure,
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const unsigned char *data,
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unsigned int length)
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{
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gint fd = GPOINTER_TO_INT (closure);
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gssize written;
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while (length > 0)
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{
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written = write (fd, data, length);
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if (written == -1)
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{
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if (errno == EAGAIN || errno == EINTR)
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continue;
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return CAIRO_STATUS_WRITE_ERROR;
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}
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data += written;
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length -= written;
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}
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_surface_t *
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file_printer_create_cairo_surface (GtkPrinter *printer,
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GtkPrintSettings *settings,
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gdouble width,
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gdouble height,
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gint cache_fd)
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{
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cairo_surface_t *surface;
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surface = cairo_pdf_surface_create_for_stream (_cairo_write, GINT_TO_POINTER (cache_fd), width, height);
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/* TODO: DPI from settings object? */
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cairo_surface_set_fallback_resolution (surface, 300, 300);
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return surface;
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}
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typedef struct {
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GtkPrintBackend *backend;
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GtkPrintJobCompleteFunc callback;
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GtkPrintJob *job;
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gint target_fd;
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gpointer user_data;
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GDestroyNotify dnotify;
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} _PrintStreamData;
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static void
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file_print_cb (GtkPrintBackendFile *print_backend,
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GError *error,
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gpointer user_data)
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{
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_PrintStreamData *ps = (_PrintStreamData *) user_data;
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if (ps->target_fd > 0)
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close (ps->target_fd);
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if (ps->callback)
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ps->callback (ps->job, ps->user_data, error);
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if (ps->dnotify)
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ps->dnotify (ps->user_data);
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gtk_print_job_set_status (ps->job,
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(error != NULL)?GTK_PRINT_STATUS_FINISHED_ABORTED:GTK_PRINT_STATUS_FINISHED);
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if (ps->job)
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g_object_unref (ps->job);
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g_free (ps);
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}
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static gboolean
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file_write (GIOChannel *source,
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GIOCondition con,
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gpointer user_data)
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{
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gchar buf[_STREAM_MAX_CHUNK_SIZE];
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gsize bytes_read;
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GError *error;
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_PrintStreamData *ps = (_PrintStreamData *) user_data;
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gint source_fd;
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error = NULL;
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source_fd = g_io_channel_unix_get_fd (source);
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bytes_read = read (source_fd,
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buf,
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_STREAM_MAX_CHUNK_SIZE);
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if (bytes_read > 0)
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{
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if (write (ps->target_fd, buf, bytes_read) == -1)
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{
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error = g_error_new (GTK_PRINT_ERROR,
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GTK_PRINT_ERROR_INTERNAL_ERROR,
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g_strerror (errno));
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}
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}
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else if (bytes_read == -1)
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{
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error = g_error_new (GTK_PRINT_ERROR,
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GTK_PRINT_ERROR_INTERNAL_ERROR,
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g_strerror (errno));
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}
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if (bytes_read == 0 || error != NULL)
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{
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file_print_cb (GTK_PRINT_BACKEND_FILE (ps->backend), error, user_data);
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return FALSE;
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}
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return TRUE;
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}
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static void
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gtk_print_backend_file_print_stream (GtkPrintBackend *print_backend,
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GtkPrintJob *job,
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gint data_fd,
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GtkPrintJobCompleteFunc callback,
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gpointer user_data,
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GDestroyNotify dnotify,
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GError **error)
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{
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GError *internal_error = NULL;
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GtkPrinter *printer;
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_PrintStreamData *ps;
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GtkPrintSettings *settings;
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GIOChannel *save_channel;
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const gchar *uri;
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gchar *filename = NULL;
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printer = gtk_print_job_get_printer (job);
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settings = gtk_print_job_get_settings (job);
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error = NULL;
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uri = gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_OUTPUT_URI);
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if (uri)
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filename = g_filename_from_uri (uri, NULL, NULL);
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/* FIXME: shouldn't we error out if we get an URI we cannot handle,
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* rather than to print to some random file somewhere?
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*/
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if (filename == NULL)
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filename = g_strdup_printf ("output.pdf");
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ps = g_new0 (_PrintStreamData, 1);
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ps->callback = callback;
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ps->user_data = user_data;
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ps->dnotify = dnotify;
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ps->job = g_object_ref (job);
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ps->backend = print_backend;
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ps->target_fd = creat (filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
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g_free (filename);
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if (ps->target_fd == -1)
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{
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internal_error = g_error_new (GTK_PRINT_ERROR,
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GTK_PRINT_ERROR_INTERNAL_ERROR,
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g_strerror (errno));
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file_print_cb (GTK_PRINT_BACKEND_FILE (print_backend),
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internal_error, ps);
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g_propagate_error (error, internal_error);
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return;
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}
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save_channel = g_io_channel_unix_new (data_fd);
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g_io_add_watch (save_channel,
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G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP,
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(GIOFunc) file_write,
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ps);
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}
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static void
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gtk_print_backend_file_init (GtkPrintBackendFile *backend)
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{
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GtkPrinter *printer;
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printer = g_object_new (GTK_TYPE_PRINTER,
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"name", _("Print to File"),
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"backend", backend,
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"is-virtual", TRUE,
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"accepts-ps", FALSE,
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NULL);
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gtk_printer_set_has_details (printer, TRUE);
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gtk_printer_set_icon_name (printer, "gtk-floppy");
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gtk_printer_set_is_active (printer, TRUE);
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gtk_print_backend_add_printer (GTK_PRINT_BACKEND (backend), printer);
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g_object_unref (printer);
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gtk_print_backend_set_list_done (GTK_PRINT_BACKEND (backend));
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}
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static GtkPrinterOptionSet *
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file_printer_get_options (GtkPrinter *printer,
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GtkPrintSettings *settings,
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GtkPageSetup *page_setup,
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GtkPrintCapabilities capabilities)
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{
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GtkPrinterOptionSet *set;
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GtkPrinterOption *option;
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const char *uri;
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char *n_up[] = {"1" };
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set = gtk_printer_option_set_new ();
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option = gtk_printer_option_new ("gtk-n-up", _("Pages Per Sheet"), GTK_PRINTER_OPTION_TYPE_PICKONE);
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gtk_printer_option_choices_from_array (option, G_N_ELEMENTS (n_up),
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n_up, n_up);
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gtk_printer_option_set (option, "1");
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gtk_printer_option_set_add (set, option);
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g_object_unref (option);
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option = gtk_printer_option_new ("gtk-main-page-custom-input", _("File"), GTK_PRINTER_OPTION_TYPE_FILESAVE);
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gtk_printer_option_set (option, "output.pdf");
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option->group = g_strdup ("GtkPrintDialogExtension");
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gtk_printer_option_set_add (set, option);
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if (settings != NULL &&
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(uri = gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_OUTPUT_URI))!= NULL)
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gtk_printer_option_set (option, uri);
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return set;
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}
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static void
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file_printer_get_settings_from_options (GtkPrinter *printer,
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GtkPrinterOptionSet *options,
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GtkPrintSettings *settings)
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{
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GtkPrinterOption *option;
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option = gtk_printer_option_set_lookup (options, "gtk-main-page-custom-input");
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gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_URI, option->value);
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}
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static void
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file_printer_prepare_for_print (GtkPrinter *printer,
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GtkPrintJob *print_job,
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GtkPrintSettings *settings,
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GtkPageSetup *page_setup)
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{
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gdouble scale;
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print_job->print_pages = gtk_print_settings_get_print_pages (settings);
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print_job->page_ranges = NULL;
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print_job->num_page_ranges = 0;
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if (print_job->print_pages == GTK_PRINT_PAGES_RANGES)
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print_job->page_ranges =
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gtk_print_settings_get_page_ranges (settings,
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&print_job->num_page_ranges);
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print_job->collate = gtk_print_settings_get_collate (settings);
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print_job->reverse = gtk_print_settings_get_reverse (settings);
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print_job->num_copies = gtk_print_settings_get_n_copies (settings);
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scale = gtk_print_settings_get_scale (settings);
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if (scale != 100.0)
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print_job->scale = scale/100.0;
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print_job->page_set = gtk_print_settings_get_page_set (settings);
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print_job->rotate_to_orientation = TRUE;
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}
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