forked from AuroraMiddleware/gtk
480803d5ba
2006-06-08 Matthias Clasen <mclasen@redhat.com> * gtk/gtkprintbackend.h: Don't include gtkprinter-private.h here. * gtk/gtkprintunixdialog.c: * gtk/gtkprintoperation-unix.c: * gtk/gtkprintjob.c: * gtk/gtkprintbackend.c: Instead include it here. * gtk/gtk.symbols: * gtk/gtkprintoperation.h: * gtk/gtkprintoperation.c: Rename pdf_target to export_filename.
602 lines
16 KiB
C
602 lines
16 KiB
C
/* GTK - The GIMP Toolkit
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* gtkprintbackend.h: Abstract printer backend interfaces
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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 <string.h>
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#include <gmodule.h>
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#include "gtkintl.h"
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#include "gtkmodules.h"
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#include "gtkprivate.h"
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#include "gtkprintbackend.h"
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#include "gtkprinter-private.h"
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#include "gtkalias.h"
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#define GTK_PRINT_BACKEND_GET_PRIVATE(o) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_PRINT_BACKEND, GtkPrintBackendPrivate))
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static void gtk_print_backend_dispose (GObject *object);
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struct _GtkPrintBackendPrivate
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{
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GHashTable *printers;
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guint printer_list_requested : 1;
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guint printer_list_done : 1;
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};
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enum {
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PRINTER_LIST_CHANGED,
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PRINTER_LIST_DONE,
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PRINTER_ADDED,
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PRINTER_REMOVED,
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PRINTER_STATUS_CHANGED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0 };
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static GObjectClass *backend_parent_class;
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GQuark
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gtk_print_backend_error_quark (void)
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{
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static GQuark quark = 0;
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if (quark == 0)
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quark = g_quark_from_static_string ("gtk-print-backend-error-quark");
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return quark;
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}
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/*****************************************
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* GtkPrintBackendModule modules *
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*****************************************/
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typedef struct _GtkPrintBackendModule GtkPrintBackendModule;
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typedef struct _GtkPrintBackendModuleClass GtkPrintBackendModuleClass;
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struct _GtkPrintBackendModule
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{
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GTypeModule parent_instance;
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GModule *library;
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void (*init) (GTypeModule *module);
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void (*exit) (void);
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GtkPrintBackend* (*create) (void);
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gchar *path;
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};
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struct _GtkPrintBackendModuleClass
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{
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GTypeModuleClass parent_class;
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};
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G_DEFINE_TYPE (GtkPrintBackendModule, _gtk_print_backend_module, G_TYPE_TYPE_MODULE)
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#define GTK_TYPE_PRINT_BACKEND_MODULE (_gtk_print_backend_module_get_type ())
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#define GTK_PRINT_BACKEND_MODULE(module) (G_TYPE_CHECK_INSTANCE_CAST ((module), GTK_TYPE_PRINT_BACKEND_MODULE, GtkPrintBackendModule))
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static GSList *loaded_backends;
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static gboolean
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gtk_print_backend_module_load (GTypeModule *module)
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{
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GtkPrintBackendModule *pb_module = GTK_PRINT_BACKEND_MODULE (module);
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gpointer initp, exitp, createp;
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pb_module->library = g_module_open (pb_module->path, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
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if (!pb_module->library)
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{
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g_warning (g_module_error());
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return FALSE;
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}
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/* extract symbols from the lib */
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if (!g_module_symbol (pb_module->library, "pb_module_init",
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&initp) ||
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!g_module_symbol (pb_module->library, "pb_module_exit",
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&exitp) ||
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!g_module_symbol (pb_module->library, "pb_module_create",
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&createp))
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{
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g_warning (g_module_error());
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g_module_close (pb_module->library);
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return FALSE;
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}
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pb_module->init = initp;
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pb_module->exit = exitp;
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pb_module->create = createp;
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/* call the filesystems's init function to let it */
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/* setup anything it needs to set up. */
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pb_module->init (module);
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return TRUE;
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}
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static void
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gtk_print_backend_module_unload (GTypeModule *module)
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{
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GtkPrintBackendModule *pb_module = GTK_PRINT_BACKEND_MODULE (module);
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pb_module->exit();
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g_module_close (pb_module->library);
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pb_module->library = NULL;
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pb_module->init = NULL;
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pb_module->exit = NULL;
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pb_module->create = NULL;
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}
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/* This only will ever be called if an error occurs during
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* initialization
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*/
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static void
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gtk_print_backend_module_finalize (GObject *object)
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{
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GtkPrintBackendModule *module = GTK_PRINT_BACKEND_MODULE (object);
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g_free (module->path);
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G_OBJECT_CLASS (_gtk_print_backend_module_parent_class)->finalize (object);
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}
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static void
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_gtk_print_backend_module_class_init (GtkPrintBackendModuleClass *class)
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{
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GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (class);
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GObjectClass *gobject_class = G_OBJECT_CLASS (class);
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module_class->load = gtk_print_backend_module_load;
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module_class->unload = gtk_print_backend_module_unload;
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gobject_class->finalize = gtk_print_backend_module_finalize;
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}
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static void
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_gtk_print_backend_module_init (GtkPrintBackendModule *pb_module)
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{
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}
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static GtkPrintBackend *
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_gtk_print_backend_module_create (GtkPrintBackendModule *pb_module)
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{
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GtkPrintBackend *pb;
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if (g_type_module_use (G_TYPE_MODULE (pb_module)))
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{
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pb = pb_module->create ();
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g_type_module_unuse (G_TYPE_MODULE (pb_module));
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return pb;
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}
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return NULL;
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}
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static GtkPrintBackend *
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_gtk_print_backend_create (const char *backend_name)
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{
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GSList *l;
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char *module_path;
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char *full_name;
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GtkPrintBackendModule *pb_module;
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GtkPrintBackend *pb;
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for (l = loaded_backends; l != NULL; l = l->next)
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{
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pb_module = l->data;
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if (strcmp (G_TYPE_MODULE (pb_module)->name, backend_name) == 0)
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return _gtk_print_backend_module_create (pb_module);
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}
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pb = NULL;
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if (g_module_supported ())
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{
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full_name = g_strconcat ("printbackend-", backend_name, NULL);
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module_path = _gtk_find_module (full_name, "printbackends");
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g_free (full_name);
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if (module_path)
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{
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pb_module = g_object_new (GTK_TYPE_PRINT_BACKEND_MODULE, NULL);
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g_type_module_set_name (G_TYPE_MODULE (pb_module), backend_name);
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pb_module->path = g_strdup (module_path);
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loaded_backends = g_slist_prepend (loaded_backends,
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pb_module);
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pb = _gtk_print_backend_module_create (pb_module);
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/* Increase use-count so that we don't unload print backends.
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There is a problem with module unloading in the cups module,
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see cups_dispatch_watch_finalize for details. */
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g_type_module_use (G_TYPE_MODULE (pb_module));
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}
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g_free (module_path);
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}
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return pb;
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return NULL;
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}
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static void
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gtk_print_backend_initialize (void)
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{
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static gboolean initialized = FALSE;
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if (!initialized)
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{
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gtk_settings_install_property (g_param_spec_string ("gtk-print-backends",
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P_("Default print backend"),
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P_("List of the GtkPrintBackend backends to use by default"),
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GTK_PRINT_BACKENDS,
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GTK_PARAM_READWRITE));
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gtk_settings_install_property (g_param_spec_string ("gtk-print-preview-command",
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P_("Default command to run when displaying a print preview"),
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P_("Command to run when displaying a print preview"),
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GTK_PRINT_PREVIEW_COMMAND,
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GTK_PARAM_READWRITE));
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initialized = TRUE;
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}
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}
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GList *
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gtk_print_backend_load_modules ()
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{
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GList *result;
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GtkPrintBackend *backend;
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gchar *setting;
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gchar **backends;
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gint i;
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GtkSettings *settings;
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result = NULL;
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gtk_print_backend_initialize ();
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settings = gtk_settings_get_default ();
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g_object_get (settings, "gtk-print-backends", &setting, NULL);
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backends = g_strsplit (setting, ",", -1);
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for (i = 0; backends[i]; i++)
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{
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g_strchug (backends[i]);
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g_strchomp (backends[i]);
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backend = _gtk_print_backend_create (backends[i]);
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if (backend)
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result = g_list_append (result, backend);
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}
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g_strfreev (backends);
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g_free (setting);
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return result;
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}
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/*****************************************
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* GtkPrintBackend *
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*****************************************/
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G_DEFINE_TYPE (GtkPrintBackend, gtk_print_backend, G_TYPE_OBJECT)
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static void fallback_printer_request_details (GtkPrinter *printer);
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static gboolean fallback_printer_mark_conflicts (GtkPrinter *printer,
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GtkPrinterOptionSet *options);
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static void fallback_printer_get_hard_margins (GtkPrinter *printer,
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double *top,
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double *bottom,
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double *left,
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double *right);
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static GList * fallback_printer_list_papers (GtkPrinter *printer);
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static GtkPrintCapabilities fallback_printer_get_capabilities (GtkPrinter *printer);
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static void
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gtk_print_backend_class_init (GtkPrintBackendClass *class)
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{
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GObjectClass *object_class;
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object_class = (GObjectClass *) class;
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backend_parent_class = g_type_class_peek_parent (class);
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object_class->dispose = gtk_print_backend_dispose;
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class->printer_request_details = fallback_printer_request_details;
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class->printer_mark_conflicts = fallback_printer_mark_conflicts;
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class->printer_get_hard_margins = fallback_printer_get_hard_margins;
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class->printer_list_papers = fallback_printer_list_papers;
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class->printer_get_capabilities = fallback_printer_get_capabilities;
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g_type_class_add_private (class, sizeof (GtkPrintBackendPrivate));
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signals[PRINTER_LIST_CHANGED] =
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g_signal_new (I_("printer-list-changed"),
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G_TYPE_FROM_CLASS (class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GtkPrintBackendClass, printer_list_changed),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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signals[PRINTER_LIST_DONE] =
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g_signal_new (I_("printer-list-done"),
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G_TYPE_FROM_CLASS (class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GtkPrintBackendClass, printer_list_done),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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signals[PRINTER_ADDED] =
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g_signal_new (I_("printer-added"),
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G_TYPE_FROM_CLASS (class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GtkPrintBackendClass, printer_added),
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NULL, NULL,
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g_cclosure_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1, GTK_TYPE_PRINTER);
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signals[PRINTER_REMOVED] =
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g_signal_new (I_("printer-removed"),
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G_TYPE_FROM_CLASS (class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GtkPrintBackendClass, printer_removed),
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NULL, NULL,
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g_cclosure_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1, GTK_TYPE_PRINTER);
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signals[PRINTER_STATUS_CHANGED] =
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g_signal_new (I_("printer-status-changed"),
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G_TYPE_FROM_CLASS (class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GtkPrintBackendClass, printer_status_changed),
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NULL, NULL,
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g_cclosure_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1, GTK_TYPE_PRINTER);
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}
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static void
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gtk_print_backend_init (GtkPrintBackend *backend)
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{
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GtkPrintBackendPrivate *priv;
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priv = backend->priv = GTK_PRINT_BACKEND_GET_PRIVATE (backend);
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priv->printers = g_hash_table_new_full (g_str_hash, g_str_equal,
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(GDestroyNotify) g_free,
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(GDestroyNotify) g_object_unref);
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}
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static void
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gtk_print_backend_dispose (GObject *object)
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{
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GtkPrintBackend *backend;
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GtkPrintBackendPrivate *priv;
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backend = GTK_PRINT_BACKEND (object);
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priv = backend->priv;
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/* We unref the printers in dispose, not in finalize so that
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we can break refcount cycles with gtk_print_backend_destroy */
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if (priv->printers)
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{
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g_hash_table_destroy (priv->printers);
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priv->printers = NULL;
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}
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backend_parent_class->dispose (object);
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}
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static void
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fallback_printer_request_details (GtkPrinter *printer)
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{
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}
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static gboolean
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fallback_printer_mark_conflicts (GtkPrinter *printer,
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GtkPrinterOptionSet *options)
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{
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return FALSE;
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}
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static void
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fallback_printer_get_hard_margins (GtkPrinter *printer,
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double *top,
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double *bottom,
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double *left,
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double *right)
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{
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*top = 0;
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*bottom = 0;
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*left = 0;
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*right = 0;
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}
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static GList *
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fallback_printer_list_papers (GtkPrinter *printer)
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{
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return NULL;
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}
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static GtkPrintCapabilities
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fallback_printer_get_capabilities (GtkPrinter *printer)
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{
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return 0;
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}
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static void
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printer_hash_to_sorted_active_list (const gchar *key,
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gpointer value,
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GList **out_list)
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{
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GtkPrinter *printer;
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printer = GTK_PRINTER (value);
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if (gtk_printer_get_name (printer) == NULL)
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return;
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if (!gtk_printer_is_active (printer))
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return;
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*out_list = g_list_insert_sorted (*out_list, value, (GCompareFunc) gtk_printer_compare);
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}
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void
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gtk_print_backend_add_printer (GtkPrintBackend *backend,
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GtkPrinter *printer)
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{
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GtkPrintBackendPrivate *priv;
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g_return_if_fail (GTK_IS_PRINT_BACKEND (backend));
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priv = backend->priv;
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if (!priv->printers)
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return;
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g_hash_table_insert (priv->printers,
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g_strdup (gtk_printer_get_name (printer)),
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g_object_ref (printer));
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}
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void
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gtk_print_backend_remove_printer (GtkPrintBackend *backend,
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GtkPrinter *printer)
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{
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GtkPrintBackendPrivate *priv;
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g_return_if_fail (GTK_IS_PRINT_BACKEND (backend));
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priv = backend->priv;
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if (!priv->printers)
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return;
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g_hash_table_remove (priv->printers,
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gtk_printer_get_name (printer));
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}
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void
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gtk_print_backend_set_list_done (GtkPrintBackend *backend)
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{
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if (!backend->priv->printer_list_done)
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{
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backend->priv->printer_list_done = TRUE;
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g_signal_emit (backend, signals[PRINTER_LIST_DONE], 0);
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}
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}
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GList *
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gtk_print_backend_get_printer_list (GtkPrintBackend *backend)
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{
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GtkPrintBackendPrivate *priv;
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GList *result;
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g_return_val_if_fail (GTK_IS_PRINT_BACKEND (backend), NULL);
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priv = backend->priv;
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result = NULL;
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if (priv->printers != NULL)
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g_hash_table_foreach (priv->printers,
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(GHFunc) printer_hash_to_sorted_active_list,
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&result);
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if (!priv->printer_list_requested && priv->printers != NULL)
|
|
{
|
|
if (GTK_PRINT_BACKEND_GET_CLASS (backend)->request_printer_list)
|
|
GTK_PRINT_BACKEND_GET_CLASS (backend)->request_printer_list (backend);
|
|
priv->printer_list_requested = TRUE;
|
|
}
|
|
|
|
return result;;
|
|
}
|
|
|
|
gboolean
|
|
gtk_print_backend_printer_list_is_done (GtkPrintBackend *print_backend)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_PRINT_BACKEND (print_backend), TRUE);
|
|
|
|
return print_backend->priv->printer_list_done;
|
|
}
|
|
|
|
GtkPrinter *
|
|
gtk_print_backend_find_printer (GtkPrintBackend *backend,
|
|
const gchar *printer_name)
|
|
{
|
|
GtkPrintBackendPrivate *priv;
|
|
GtkPrinter *printer;
|
|
|
|
g_return_val_if_fail (GTK_IS_PRINT_BACKEND (backend), NULL);
|
|
|
|
priv = backend->priv;
|
|
|
|
if (priv->printers)
|
|
printer = g_hash_table_lookup (priv->printers, printer_name);
|
|
else
|
|
printer = NULL;
|
|
|
|
return printer;
|
|
}
|
|
|
|
void
|
|
gtk_print_backend_print_stream (GtkPrintBackend *backend,
|
|
GtkPrintJob *job,
|
|
gint data_fd,
|
|
GtkPrintJobCompleteFunc callback,
|
|
gpointer user_data,
|
|
GDestroyNotify dnotify)
|
|
{
|
|
g_return_if_fail (GTK_IS_PRINT_BACKEND (backend));
|
|
|
|
GTK_PRINT_BACKEND_GET_CLASS (backend)->print_stream (backend,
|
|
job,
|
|
data_fd,
|
|
callback,
|
|
user_data,
|
|
dnotify);
|
|
}
|
|
|
|
void
|
|
gtk_print_backend_destroy (GtkPrintBackend *print_backend)
|
|
{
|
|
/* The lifecycle of print backends and printers are tied, such that
|
|
the backend owns the printers, but the printers also ref the backend.
|
|
This is so that if the app has a reference to a printer its backend
|
|
will be around. However, this results in a cycle, which we break
|
|
with this call, which causes the print backend to release its printers.
|
|
*/
|
|
g_object_run_dispose (G_OBJECT (print_backend));
|
|
}
|
|
|
|
#define __GTK_PRINT_BACKEND_C__
|
|
#include "gtkaliasdef.c"
|