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gtk2/gtk/gtkprintoperation-unix.c
Adrian Johnson 4261efda2b Emit PageOrientation DSC comment into PostScript print output 
The PageOrientation DSC comment tells PostScript viewers such as gv or
evince the orientation to use when displaying the page. Part of bug 596423
2009-09-30 12:46:58 -04:00

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/* GTK - The GIMP Toolkit
* gtkprintoperation-unix.c: Print Operation Details for Unix
* and Unix-like platforms
* Copyright (C) 2006, 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"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <fcntl.h>
#include <glib/gstdio.h>
#include "gtkprintoperation-private.h"
#include "gtkmessagedialog.h"
#include <cairo-pdf.h>
#include <cairo-ps.h>
#include "gtkprivate.h"
#include "gtkprintunixdialog.h"
#include "gtkpagesetupunixdialog.h"
#include "gtkprintbackend.h"
#include "gtkprinter.h"
#include "gtkprinter-private.h"
#include "gtkprintjob.h"
#include "gtklabel.h"
#include "gtkintl.h"
#include "gtkalias.h"
typedef struct
{
GtkWindow *parent; /* just in case we need to throw error dialogs */
GMainLoop *loop;
gboolean data_sent;
/* Real printing (not preview) */
GtkPrintJob *job; /* the job we are sending to the printer */
cairo_surface_t *surface;
gulong job_status_changed_tag;
} GtkPrintOperationUnix;
typedef struct _PrinterFinder PrinterFinder;
static void printer_finder_free (PrinterFinder *finder);
static void find_printer (const gchar *printer,
GFunc func,
gpointer data);
static void
unix_start_page (GtkPrintOperation *op,
GtkPrintContext *print_context,
GtkPageSetup *page_setup)
{
GtkPrintOperationUnix *op_unix;
GtkPaperSize *paper_size;
cairo_surface_type_t type;
gdouble w, h;
op_unix = op->priv->platform_data;
paper_size = gtk_page_setup_get_paper_size (page_setup);
w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
type = cairo_surface_get_type (op_unix->surface);
if ((op->priv->manual_number_up < 2) ||
(op->priv->page_position % op->priv->manual_number_up == 0))
{
if (type == CAIRO_SURFACE_TYPE_PS)
{
cairo_ps_surface_set_size (op_unix->surface, w, h);
cairo_ps_surface_dsc_begin_page_setup (op_unix->surface);
switch (gtk_page_setup_get_orientation (page_setup))
{
case GTK_PAGE_ORIENTATION_PORTRAIT:
case GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT:
cairo_ps_surface_dsc_comment (op_unix->surface, "%%PageOrientation: Portrait");
break;
case GTK_PAGE_ORIENTATION_LANDSCAPE:
case GTK_PAGE_ORIENTATION_REVERSE_LANDSCAPE:
cairo_ps_surface_dsc_comment (op_unix->surface, "%%PageOrientation: Landscape");
break;
}
}
else if (type == CAIRO_SURFACE_TYPE_PDF)
{
cairo_pdf_surface_set_size (op_unix->surface, w, h);
}
}
}
static void
unix_end_page (GtkPrintOperation *op,
GtkPrintContext *print_context)
{
cairo_t *cr;
cr = gtk_print_context_get_cairo_context (print_context);
if ((op->priv->manual_number_up < 2) ||
((op->priv->page_position + 1) % op->priv->manual_number_up == 0) ||
(op->priv->page_position == op->priv->nr_of_pages_to_print - 1))
cairo_show_page (cr);
}
static void
op_unix_free (GtkPrintOperationUnix *op_unix)
{
if (op_unix->job)
{
g_signal_handler_disconnect (op_unix->job,
op_unix->job_status_changed_tag);
g_object_unref (op_unix->job);
}
g_free (op_unix);
}
static gchar *
shell_command_substitute_file (const gchar *cmd,
const gchar *pdf_filename,
const gchar *settings_filename,
gboolean *pdf_filename_replaced,
gboolean *settings_filename_replaced)
{
const gchar *inptr, *start;
GString *final;
g_return_val_if_fail (cmd != NULL, NULL);
g_return_val_if_fail (pdf_filename != NULL, NULL);
g_return_val_if_fail (settings_filename != NULL, NULL);
final = g_string_new (NULL);
*pdf_filename_replaced = FALSE;
*settings_filename_replaced = FALSE;
start = inptr = cmd;
while ((inptr = strchr (inptr, '%')) != NULL)
{
g_string_append_len (final, start, inptr - start);
inptr++;
switch (*inptr)
{
case 'f':
g_string_append (final, pdf_filename);
*pdf_filename_replaced = TRUE;
break;
case 's':
g_string_append (final, settings_filename);
*settings_filename_replaced = TRUE;
break;
case '%':
g_string_append_c (final, '%');
break;
default:
g_string_append_c (final, '%');
if (*inptr)
g_string_append_c (final, *inptr);
break;
}
if (*inptr)
inptr++;
start = inptr;
}
g_string_append (final, start);
return g_string_free (final, FALSE);
}
void
_gtk_print_operation_platform_backend_launch_preview (GtkPrintOperation *op,
cairo_surface_t *surface,
GtkWindow *parent,
const gchar *filename)
{
gint argc;
gchar **argv;
gchar *cmd;
gchar *preview_cmd;
GtkSettings *settings;
GtkPrintSettings *print_settings;
GtkPageSetup *page_setup;
GKeyFile *key_file = NULL;
gchar *data = NULL;
gsize data_len;
gchar *settings_filename = NULL;
gchar *quoted_filename;
gchar *quoted_settings_filename;
gboolean filename_used = FALSE;
gboolean settings_used = FALSE;
GdkScreen *screen;
GError *error = NULL;
gint fd;
gboolean retval;
cairo_surface_destroy (surface);
if (parent)
screen = gtk_window_get_screen (parent);
else
screen = gdk_screen_get_default ();
fd = g_file_open_tmp ("settingsXXXXXX.ini", &settings_filename, &error);
if (fd < 0)
goto out;
key_file = g_key_file_new ();
print_settings = gtk_print_operation_get_print_settings (op);
gtk_print_settings_to_key_file (print_settings, key_file, NULL);
page_setup = gtk_print_context_get_page_setup (op->priv->print_context);
gtk_page_setup_to_key_file (page_setup, key_file, NULL);
g_key_file_set_string (key_file, "Print Job", "title", op->priv->job_name);
data = g_key_file_to_data (key_file, &data_len, &error);
if (!data)
goto out;
retval = g_file_set_contents (settings_filename, data, data_len, &error);
if (!retval)
goto out;
settings = gtk_settings_get_for_screen (screen);
g_object_get (settings, "gtk-print-preview-command", &preview_cmd, NULL);
quoted_filename = g_shell_quote (filename);
quoted_settings_filename = g_shell_quote (settings_filename);
cmd = shell_command_substitute_file (preview_cmd, quoted_filename, quoted_settings_filename, &filename_used, &settings_used);
g_shell_parse_argv (cmd, &argc, &argv, &error);
g_free (preview_cmd);
g_free (quoted_filename);
g_free (quoted_settings_filename);
g_free (cmd);
if (error != NULL)
goto out;
gdk_spawn_on_screen (screen, NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
g_strfreev (argv);
out:
if (error != NULL)
{
GtkWidget *edialog;
edialog = gtk_message_dialog_new (parent,
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
_("Error launching preview") /* FIXME better text */);
gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
"%s", error->message);
g_signal_connect (edialog, "response",
G_CALLBACK (gtk_widget_destroy), NULL);
gtk_window_present (GTK_WINDOW (edialog));
g_error_free (error);
filename_used = FALSE;
settings_used = FALSE;
}
if (!filename_used)
g_unlink (filename);
if (!settings_used)
g_unlink (settings_filename);
if (fd > 0)
close (fd);
if (key_file)
g_key_file_free (key_file);
g_free (data);
g_free (settings_filename);
}
static void
unix_finish_send (GtkPrintJob *job,
gpointer user_data,
GError *error)
{
GtkPrintOperation *op = (GtkPrintOperation *) user_data;
GtkPrintOperationUnix *op_unix = op->priv->platform_data;
if (error != NULL)
{
GtkWidget *edialog;
edialog = gtk_message_dialog_new (op_unix->parent,
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
_("Error printing") /* FIXME better text */);
gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
"%s", error->message);
gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
g_signal_connect (edialog, "response",
G_CALLBACK (gtk_widget_destroy), NULL);
gtk_window_present (GTK_WINDOW (edialog));
}
op_unix->data_sent = TRUE;
if (op_unix->loop)
g_main_loop_quit (op_unix->loop);
g_object_unref (op);
}
static void
unix_end_run (GtkPrintOperation *op,
gboolean wait,
gboolean cancelled)
{
GtkPrintOperationUnix *op_unix = op->priv->platform_data;
cairo_surface_finish (op_unix->surface);
if (cancelled)
return;
if (wait)
op_unix->loop = g_main_loop_new (NULL, FALSE);
/* TODO: Check for error */
if (op_unix->job != NULL)
{
g_object_ref (op);
gtk_print_job_send (op_unix->job,
unix_finish_send,
op, NULL);
}
if (wait)
{
g_object_ref (op);
if (!op_unix->data_sent)
{
GDK_THREADS_LEAVE ();
g_main_loop_run (op_unix->loop);
GDK_THREADS_ENTER ();
}
g_main_loop_unref (op_unix->loop);
op_unix->loop = NULL;
g_object_unref (op);
}
}
static void
job_status_changed_cb (GtkPrintJob *job,
GtkPrintOperation *op)
{
_gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
}
static void
print_setup_changed_cb (GtkPrintUnixDialog *print_dialog,
GParamSpec *pspec,
gpointer user_data)
{
GtkPageSetup *page_setup;
GtkPrintSettings *print_settings;
GtkPrintOperation *op = user_data;
GtkPrintOperationPrivate *priv = op->priv;
page_setup = gtk_print_unix_dialog_get_page_setup (print_dialog);
print_settings = gtk_print_unix_dialog_get_settings (print_dialog);
g_signal_emit_by_name (op,
"update-custom-widget",
priv->custom_widget,
page_setup,
print_settings);
}
static GtkWidget *
get_print_dialog (GtkPrintOperation *op,
GtkWindow *parent)
{
GtkPrintOperationPrivate *priv = op->priv;
GtkWidget *pd, *label;
const gchar *custom_tab_label;
pd = gtk_print_unix_dialog_new (NULL, parent);
gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
GTK_PRINT_CAPABILITY_PAGE_SET |
GTK_PRINT_CAPABILITY_COPIES |
GTK_PRINT_CAPABILITY_COLLATE |
GTK_PRINT_CAPABILITY_REVERSE |
GTK_PRINT_CAPABILITY_SCALE |
GTK_PRINT_CAPABILITY_PREVIEW |
GTK_PRINT_CAPABILITY_NUMBER_UP |
GTK_PRINT_CAPABILITY_NUMBER_UP_LAYOUT);
if (priv->print_settings)
gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
priv->print_settings);
if (priv->default_page_setup)
gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
priv->default_page_setup);
gtk_print_unix_dialog_set_embed_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
priv->embed_page_setup);
gtk_print_unix_dialog_set_current_page (GTK_PRINT_UNIX_DIALOG (pd),
priv->current_page);
gtk_print_unix_dialog_set_support_selection (GTK_PRINT_UNIX_DIALOG (pd),
priv->support_selection);
gtk_print_unix_dialog_set_has_selection (GTK_PRINT_UNIX_DIALOG (pd),
priv->has_selection);
g_signal_emit_by_name (op, "create-custom-widget",
&priv->custom_widget);
if (priv->custom_widget)
{
custom_tab_label = priv->custom_tab_label;
if (custom_tab_label == NULL)
{
custom_tab_label = g_get_application_name ();
if (custom_tab_label == NULL)
custom_tab_label = _("Application");
}
label = gtk_label_new (custom_tab_label);
gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
priv->custom_widget, label);
g_signal_connect (pd, "notify::selected-printer", (GCallback) print_setup_changed_cb, op);
g_signal_connect (pd, "notify::page-setup", (GCallback) print_setup_changed_cb, op);
}
return pd;
}
typedef struct
{
GtkPrintOperation *op;
gboolean do_print;
gboolean do_preview;
GtkPrintOperationResult result;
GtkPrintOperationPrintFunc print_cb;
GDestroyNotify destroy;
GtkWindow *parent;
GMainLoop *loop;
} PrintResponseData;
static void
print_response_data_free (gpointer data)
{
PrintResponseData *rdata = data;
g_object_unref (rdata->op);
g_free (rdata);
}
static void
finish_print (PrintResponseData *rdata,
GtkPrinter *printer,
GtkPageSetup *page_setup,
GtkPrintSettings *settings,
gboolean page_setup_set)
{
GtkPrintOperation *op = rdata->op;
GtkPrintOperationPrivate *priv = op->priv;
GtkPrintJob *job;
if (rdata->do_print)
{
gtk_print_operation_set_print_settings (op, settings);
priv->print_context = _gtk_print_context_new (op);
if (page_setup != NULL &&
(gtk_print_operation_get_default_page_setup (op) == NULL ||
page_setup_set))
gtk_print_operation_set_default_page_setup (op, page_setup);
_gtk_print_context_set_page_setup (priv->print_context, page_setup);
if (!rdata->do_preview)
{
GtkPrintOperationUnix *op_unix;
cairo_t *cr;
op_unix = g_new0 (GtkPrintOperationUnix, 1);
priv->platform_data = op_unix;
priv->free_platform_data = (GDestroyNotify) op_unix_free;
op_unix->parent = rdata->parent;
priv->start_page = unix_start_page;
priv->end_page = unix_end_page;
priv->end_run = unix_end_run;
job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
op_unix->job = job;
gtk_print_job_set_track_print_status (job, priv->track_print_status);
op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
if (op_unix->surface == NULL)
{
rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
rdata->do_print = FALSE;
goto out;
}
cr = cairo_create (op_unix->surface);
gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
cairo_destroy (cr);
_gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
op_unix->job_status_changed_tag =
g_signal_connect (job, "status-changed",
G_CALLBACK (job_status_changed_cb), op);
priv->print_pages = job->print_pages;
priv->page_ranges = job->page_ranges;
priv->num_page_ranges = job->num_page_ranges;
priv->manual_num_copies = job->num_copies;
priv->manual_collation = job->collate;
priv->manual_reverse = job->reverse;
priv->manual_page_set = job->page_set;
priv->manual_scale = job->scale;
priv->manual_orientation = job->rotate_to_orientation;
priv->manual_number_up = job->number_up;
priv->manual_number_up_layout = job->number_up_layout;
}
}
out:
if (rdata->print_cb)
rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
if (rdata->destroy)
rdata->destroy (rdata);
}
static void
handle_print_response (GtkWidget *dialog,
gint response,
gpointer data)
{
GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
PrintResponseData *rdata = data;
GtkPrintSettings *settings = NULL;
GtkPageSetup *page_setup = NULL;
GtkPrinter *printer = NULL;
gboolean page_setup_set = FALSE;
if (response == GTK_RESPONSE_OK)
{
printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
rdata->do_preview = FALSE;
if (printer != NULL)
rdata->do_print = TRUE;
}
else if (response == GTK_RESPONSE_APPLY)
{
/* print preview */
rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
rdata->do_preview = TRUE;
rdata->do_print = TRUE;
rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
}
if (rdata->do_print)
{
settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
page_setup_set = gtk_print_unix_dialog_get_page_setup_set (GTK_PRINT_UNIX_DIALOG (pd));
g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
}
finish_print (rdata, printer, page_setup, settings, page_setup_set);
if (settings)
g_object_unref (settings);
gtk_widget_destroy (GTK_WIDGET (pd));
}
static void
found_printer (GtkPrinter *printer,
PrintResponseData *rdata)
{
GtkPrintOperation *op = rdata->op;
GtkPrintOperationPrivate *priv = op->priv;
GtkPrintSettings *settings = NULL;
GtkPageSetup *page_setup = NULL;
if (rdata->loop)
g_main_loop_quit (rdata->loop);
if (printer != NULL)
{
rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
rdata->do_print = TRUE;
if (priv->print_settings)
settings = gtk_print_settings_copy (priv->print_settings);
else
settings = gtk_print_settings_new ();
gtk_print_settings_set_printer (settings,
gtk_printer_get_name (printer));
if (priv->default_page_setup)
page_setup = gtk_page_setup_copy (priv->default_page_setup);
else
page_setup = gtk_page_setup_new ();
}
finish_print (rdata, printer, page_setup, settings, FALSE);
if (settings)
g_object_unref (settings);
if (page_setup)
g_object_unref (page_setup);
}
void
_gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation *op,
gboolean show_dialog,
GtkWindow *parent,
GtkPrintOperationPrintFunc print_cb)
{
GtkWidget *pd;
PrintResponseData *rdata;
const gchar *printer_name;
rdata = g_new (PrintResponseData, 1);
rdata->op = g_object_ref (op);
rdata->do_print = FALSE;
rdata->do_preview = FALSE;
rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
rdata->print_cb = print_cb;
rdata->parent = parent;
rdata->loop = NULL;
rdata->destroy = print_response_data_free;
if (show_dialog)
{
pd = get_print_dialog (op, parent);
gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
g_signal_connect (pd, "response",
G_CALLBACK (handle_print_response), rdata);
gtk_window_present (GTK_WINDOW (pd));
}
else
{
printer_name = NULL;
if (op->priv->print_settings)
printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
find_printer (printer_name, (GFunc) found_printer, rdata);
}
}
static cairo_status_t
write_preview (void *closure,
const unsigned char *data,
unsigned int length)
{
gint fd = GPOINTER_TO_INT (closure);
gssize written;
while (length > 0)
{
written = write (fd, data, length);
if (written == -1)
{
if (errno == EAGAIN || errno == EINTR)
continue;
return CAIRO_STATUS_WRITE_ERROR;
}
data += written;
length -= written;
}
return CAIRO_STATUS_SUCCESS;
}
static void
close_preview (void *data)
{
gint fd = GPOINTER_TO_INT (data);
close (fd);
}
cairo_surface_t *
_gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
GtkPageSetup *page_setup,
gdouble *dpi_x,
gdouble *dpi_y,
gchar **target)
{
gchar *filename;
gint fd;
GtkPaperSize *paper_size;
gdouble w, h;
cairo_surface_t *surface;
static cairo_user_data_key_t key;
filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
fd = g_mkstemp (filename);
if (fd < 0)
{
g_free (filename);
return NULL;
}
*target = filename;
paper_size = gtk_page_setup_get_paper_size (page_setup);
w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
*dpi_x = *dpi_y = 72;
surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER (fd), w, h);
cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
return surface;
}
void
_gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
cairo_surface_t *surface,
cairo_t *cr)
{
}
void
_gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
cairo_surface_t *surface,
cairo_t *cr)
{
cairo_show_page (cr);
}
void
_gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
GtkPageSetup *page_setup,
cairo_surface_t *surface)
{
GtkPaperSize *paper_size;
gdouble w, h;
paper_size = gtk_page_setup_get_paper_size (page_setup);
w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
cairo_pdf_surface_set_size (surface, w, h);
}
GtkPrintOperationResult
_gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
gboolean show_dialog,
GtkWindow *parent,
gboolean *do_print)
{
GtkWidget *pd;
PrintResponseData rdata;
gint response;
const gchar *printer_name;
rdata.op = op;
rdata.do_print = FALSE;
rdata.do_preview = FALSE;
rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
rdata.print_cb = NULL;
rdata.destroy = NULL;
rdata.parent = parent;
rdata.loop = NULL;
if (show_dialog)
{
pd = get_print_dialog (op, parent);
response = gtk_dialog_run (GTK_DIALOG (pd));
handle_print_response (pd, response, &rdata);
}
else
{
printer_name = NULL;
if (op->priv->print_settings)
printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
rdata.loop = g_main_loop_new (NULL, FALSE);
find_printer (printer_name,
(GFunc) found_printer, &rdata);
GDK_THREADS_LEAVE ();
g_main_loop_run (rdata.loop);
GDK_THREADS_ENTER ();
g_main_loop_unref (rdata.loop);
rdata.loop = NULL;
}
*do_print = rdata.do_print;
return rdata.result;
}
typedef struct
{
GtkPageSetup *page_setup;
GtkPageSetupDoneFunc done_cb;
gpointer data;
GDestroyNotify destroy;
} PageSetupResponseData;
static void
page_setup_data_free (gpointer data)
{
PageSetupResponseData *rdata = data;
if (rdata->page_setup)
g_object_unref (rdata->page_setup);
g_free (rdata);
}
static void
handle_page_setup_response (GtkWidget *dialog,
gint response,
gpointer data)
{
GtkPageSetupUnixDialog *psd;
PageSetupResponseData *rdata = data;
psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
if (response == GTK_RESPONSE_OK)
rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
gtk_widget_destroy (dialog);
if (rdata->done_cb)
rdata->done_cb (rdata->page_setup, rdata->data);
if (rdata->destroy)
rdata->destroy (rdata);
}
static GtkWidget *
get_page_setup_dialog (GtkWindow *parent,
GtkPageSetup *page_setup,
GtkPrintSettings *settings)
{
GtkWidget *dialog;
dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
if (page_setup)
gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
page_setup);
gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
settings);
return dialog;
}
/**
* gtk_print_run_page_setup_dialog:
* @parent: transient parent, or %NULL
* @page_setup: an existing #GtkPageSetup, or %NULL
* @settings: a #GtkPrintSettings
*
* Runs a page setup dialog, letting the user modify the values from
* @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
* is identical to the passed in @page_setup, otherwise it contains the
* modifications done in the dialog.
*
* Note that this function may use a recursive mainloop to show the page
* setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
* a problem.
*
* Return value: a new #GtkPageSetup
*
* Since: 2.10
*/
GtkPageSetup *
gtk_print_run_page_setup_dialog (GtkWindow *parent,
GtkPageSetup *page_setup,
GtkPrintSettings *settings)
{
GtkWidget *dialog;
gint response;
PageSetupResponseData rdata;
rdata.page_setup = NULL;
rdata.done_cb = NULL;
rdata.data = NULL;
rdata.destroy = NULL;
dialog = get_page_setup_dialog (parent, page_setup, settings);
response = gtk_dialog_run (GTK_DIALOG (dialog));
handle_page_setup_response (dialog, response, &rdata);
if (rdata.page_setup)
return rdata.page_setup;
else if (page_setup)
return gtk_page_setup_copy (page_setup);
else
return gtk_page_setup_new ();
}
/**
* gtk_print_run_page_setup_dialog_async:
* @parent: transient parent, or %NULL
* @page_setup: an existing #GtkPageSetup, or %NULL
* @settings: a #GtkPrintSettings
* @done_cb: a function to call when the user saves the modified page setup
* @data: user data to pass to @done_cb
*
* Runs a page setup dialog, letting the user modify the values from @page_setup.
*
* In contrast to gtk_print_run_page_setup_dialog(), this function returns after
* showing the page setup dialog on platforms that support this, and calls @done_cb
* from a signal handler for the ::response signal of the dialog.
*
* Since: 2.10
*/
void
gtk_print_run_page_setup_dialog_async (GtkWindow *parent,
GtkPageSetup *page_setup,
GtkPrintSettings *settings,
GtkPageSetupDoneFunc done_cb,
gpointer data)
{
GtkWidget *dialog;
PageSetupResponseData *rdata;
dialog = get_page_setup_dialog (parent, page_setup, settings);
gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
rdata = g_new (PageSetupResponseData, 1);
rdata->page_setup = NULL;
rdata->done_cb = done_cb;
rdata->data = data;
rdata->destroy = page_setup_data_free;
g_signal_connect (dialog, "response",
G_CALLBACK (handle_page_setup_response), rdata);
gtk_window_present (GTK_WINDOW (dialog));
}
struct _PrinterFinder
{
gboolean found_printer;
GFunc func;
gpointer data;
gchar *printer_name;
GList *backends;
guint timeout_tag;
GtkPrinter *printer;
GtkPrinter *default_printer;
GtkPrinter *first_printer;
};
static gboolean
find_printer_idle (gpointer data)
{
PrinterFinder *finder = data;
GtkPrinter *printer;
if (finder->printer != NULL)
printer = finder->printer;
else if (finder->default_printer != NULL)
printer = finder->default_printer;
else if (finder->first_printer != NULL)
printer = finder->first_printer;
else
printer = NULL;
finder->func (printer, finder->data);
printer_finder_free (finder);
return FALSE;
}
static void
printer_added_cb (GtkPrintBackend *backend,
GtkPrinter *printer,
PrinterFinder *finder)
{
if (finder->found_printer)
return;
/* FIXME this skips "Print to PDF" - is this intentional ? */
if (gtk_printer_is_virtual (printer))
return;
if (finder->printer_name != NULL &&
strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
{
finder->printer = g_object_ref (printer);
finder->found_printer = TRUE;
}
else if (finder->default_printer == NULL &&
gtk_printer_is_default (printer))
{
finder->default_printer = g_object_ref (printer);
if (finder->printer_name == NULL)
finder->found_printer = TRUE;
}
else
if (finder->first_printer == NULL)
finder->first_printer = g_object_ref (printer);
if (finder->found_printer)
g_idle_add (find_printer_idle, finder);
}
static void
printer_list_done_cb (GtkPrintBackend *backend,
PrinterFinder *finder)
{
finder->backends = g_list_remove (finder->backends, backend);
g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
gtk_print_backend_destroy (backend);
g_object_unref (backend);
if (finder->backends == NULL && !finder->found_printer)
g_idle_add (find_printer_idle, finder);
}
static void
find_printer_init (PrinterFinder *finder,
GtkPrintBackend *backend)
{
GList *list;
GList *node;
list = gtk_print_backend_get_printer_list (backend);
node = list;
while (node != NULL)
{
printer_added_cb (backend, node->data, finder);
node = node->next;
if (finder->found_printer)
break;
}
g_list_free (list);
if (gtk_print_backend_printer_list_is_done (backend))
{
finder->backends = g_list_remove (finder->backends, backend);
gtk_print_backend_destroy (backend);
g_object_unref (backend);
}
else
{
g_signal_connect (backend, "printer-added",
(GCallback) printer_added_cb,
finder);
g_signal_connect (backend, "printer-list-done",
(GCallback) printer_list_done_cb,
finder);
}
}
static void
printer_finder_free (PrinterFinder *finder)
{
GList *l;
g_free (finder->printer_name);
if (finder->printer)
g_object_unref (finder->printer);
if (finder->default_printer)
g_object_unref (finder->default_printer);
if (finder->first_printer)
g_object_unref (finder->first_printer);
for (l = finder->backends; l != NULL; l = l->next)
{
GtkPrintBackend *backend = l->data;
g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
gtk_print_backend_destroy (backend);
g_object_unref (backend);
}
g_list_free (finder->backends);
g_free (finder);
}
static void
find_printer (const gchar *printer,
GFunc func,
gpointer data)
{
GList *node, *next;
PrinterFinder *finder;
finder = g_new0 (PrinterFinder, 1);
finder->printer_name = g_strdup (printer);
finder->func = func;
finder->data = data;
finder->backends = NULL;
if (g_module_supported ())
finder->backends = gtk_print_backend_load_modules ();
for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
{
next = node->next;
find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
}
if (finder->backends == NULL && !finder->found_printer)
g_idle_add (find_printer_idle, finder);
}
#define __GTK_PRINT_OPERATION_UNIX_C__
#include "gtkaliasdef.c"
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