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gtk2/gtk/gtkprintoperation.c
Matthias Clasen 7402657672 Add a GtkPrintOperation:: paginate signal that gets emitted to paginate a 
2006-05-18  Matthias Clasen  <mclasen@redhat.com>

	* gtk/gtkprintoperation.h:
	* gtk/gtkprintoperation.c: Add a GtkPrintOperation:: paginate signal
	that gets emitted to paginate a document in chunks.
2006-05-18 20:09:05 +00:00

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/* GTK - The GIMP Toolkit
* gtkprintoperation.c: Print Operation
* 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"
#include "string.h"
#include "gtkprintoperation-private.h"
#include "gtkmarshalers.h"
#include <cairo-pdf.h>
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkalias.h"
#define GTK_PRINT_OPERATION_GET_PRIVATE(obj)(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_PRINT_OPERATION, GtkPrintOperationPrivate))
enum {
BEGIN_PRINT,
PAGINATE,
REQUEST_PAGE_SETUP,
DRAW_PAGE,
END_PRINT,
STATUS_CHANGED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_DEFAULT_PAGE_SETUP,
PROP_PRINT_SETTINGS,
PROP_JOB_NAME,
PROP_N_PAGES,
PROP_CURRENT_PAGE,
PROP_USE_FULL_PAGE,
PROP_TRACK_PRINT_STATUS,
PROP_UNIT,
PROP_SHOW_DIALOG,
PROP_PDF_TARGET,
PROP_STATUS,
PROP_STATUS_STRING
};
static guint signals[LAST_SIGNAL] = { 0 };
static int job_nr = 0;
G_DEFINE_TYPE (GtkPrintOperation, gtk_print_operation, G_TYPE_OBJECT)
/**
* gtk_print_error_quark:
*
* Registers an error quark for #GtkPrintOperation if necessary.
*
* Return value: The error quark used for #GtkPrintOperation errors.
*
* Since: 2.10
**/
GQuark
gtk_print_error_quark (void)
{
static GQuark quark = 0;
if (quark == 0)
quark = g_quark_from_static_string ("gtk-print-error-quark");
return quark;
}
static void
gtk_print_operation_finalize (GObject *object)
{
GtkPrintOperation *print_operation = GTK_PRINT_OPERATION (object);
GtkPrintOperationPrivate *priv = print_operation->priv;
if (priv->free_platform_data &&
priv->platform_data)
{
priv->free_platform_data (priv->platform_data);
priv->free_platform_data = NULL;
}
if (priv->default_page_setup)
g_object_unref (priv->default_page_setup);
if (priv->print_settings)
g_object_unref (priv->print_settings);
g_free (priv->pdf_target);
g_free (priv->job_name);
if (priv->print_pages_idle_id > 0)
g_source_remove (priv->print_pages_idle_id);
G_OBJECT_CLASS (gtk_print_operation_parent_class)->finalize (object);
}
static void
gtk_print_operation_init (GtkPrintOperation *operation)
{
GtkPrintOperationPrivate *priv;
const char *appname;
priv = operation->priv = GTK_PRINT_OPERATION_GET_PRIVATE (operation);
priv->status = GTK_PRINT_STATUS_INITIAL;
priv->status_string = g_strdup ("");
priv->default_page_setup = NULL;
priv->print_settings = NULL;
priv->nr_of_pages = -1;
priv->current_page = -1;
priv->use_full_page = FALSE;
priv->show_dialog = TRUE;
priv->pdf_target = NULL;
priv->track_print_status = FALSE;
priv->unit = GTK_UNIT_PIXEL;
appname = g_get_application_name ();
priv->job_name = g_strdup_printf ("%s job #%d", appname, ++job_nr);
}
static void
gtk_print_operation_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkPrintOperation *op = GTK_PRINT_OPERATION (object);
switch (prop_id)
{
case PROP_DEFAULT_PAGE_SETUP:
gtk_print_operation_set_default_page_setup (op, g_value_get_object (value));
break;
case PROP_PRINT_SETTINGS:
gtk_print_operation_set_print_settings (op, g_value_get_object (value));
break;
case PROP_JOB_NAME:
gtk_print_operation_set_job_name (op, g_value_get_string (value));
break;
case PROP_N_PAGES:
gtk_print_operation_set_n_pages (op, g_value_get_int (value));
break;
case PROP_CURRENT_PAGE:
gtk_print_operation_set_current_page (op, g_value_get_int (value));
break;
case PROP_USE_FULL_PAGE:
gtk_print_operation_set_use_full_page (op, g_value_get_boolean (value));
break;
case PROP_TRACK_PRINT_STATUS:
gtk_print_operation_set_track_print_status (op, g_value_get_boolean (value));
break;
case PROP_UNIT:
gtk_print_operation_set_unit (op, g_value_get_enum (value));
break;
case PROP_SHOW_DIALOG:
gtk_print_operation_set_show_dialog (op, g_value_get_boolean (value));
break;
case PROP_PDF_TARGET:
gtk_print_operation_set_pdf_target (op, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_print_operation_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkPrintOperation *op = GTK_PRINT_OPERATION (object);
GtkPrintOperationPrivate *priv = op->priv;
switch (prop_id)
{
case PROP_DEFAULT_PAGE_SETUP:
g_value_set_object (value, priv->default_page_setup);
break;
case PROP_PRINT_SETTINGS:
g_value_set_object (value, priv->print_settings);
break;
case PROP_JOB_NAME:
g_value_set_string (value, priv->job_name);
break;
case PROP_N_PAGES:
g_value_set_int (value, priv->nr_of_pages);
break;
case PROP_CURRENT_PAGE:
g_value_set_int (value, priv->current_page);
break;
case PROP_USE_FULL_PAGE:
g_value_set_boolean (value, priv->use_full_page);
break;
case PROP_TRACK_PRINT_STATUS:
g_value_set_boolean (value, priv->track_print_status);
break;
case PROP_UNIT:
g_value_set_enum (value, priv->unit);
break;
case PROP_SHOW_DIALOG:
g_value_set_boolean (value, priv->show_dialog);
break;
case PROP_PDF_TARGET:
g_value_set_string (value, priv->pdf_target);
break;
case PROP_STATUS:
g_value_set_enum (value, priv->status);
break;
case PROP_STATUS_STRING:
g_value_set_string (value, priv->status_string);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_print_operation_class_init (GtkPrintOperationClass *class)
{
GObjectClass *gobject_class = (GObjectClass *)class;
gobject_class->set_property = gtk_print_operation_set_property;
gobject_class->get_property = gtk_print_operation_get_property;
gobject_class->finalize = gtk_print_operation_finalize;
g_type_class_add_private (gobject_class, sizeof (GtkPrintOperationPrivate));
/**
* GtkPrintOperation::begin-print:
* @operation: the #GtkPrintOperation on which the signal was emitted
* @context: the #GtkPrintContext for the current operation
*
* Gets emitted after the user has finished changing print settings
* in the dialog, before the actual rendering starts.
*
* A typical use for this signal is to use the parameters from the
* #GtkPrintContext and paginate the document accordingly, and then
* set the number of pages with gtk_print_operation_set_n_pages().
*
* Since: 2.10
*/
signals[BEGIN_PRINT] =
g_signal_new (I_("begin-print"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkPrintOperationClass, begin_print),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GTK_TYPE_PRINT_CONTEXT);
/**
* Gtkprintoperation::paginate:
* @operation: the #GtkPrintOperation on which the signal was emitted
* @context: the #GtkPrintContext for the current operation
*
* Gets emitted after the begin-print signal, but before the actual
* rendering starts. It keeps getting emitted until it returns %FALSE.
*
* This signal is intended to be used for paginating the document
* in small chunks, to avoid blocking the user interface for a long
* time. The signal handler should update the number of pages using
* gtk_print_operation_set_n_pages(), and return %TRUE if the document
* has been completely paginated.
*
* If you don't need to do pagination in chunks, you can simply do
* it all in the begin-print handler, and set the number of pages
* from there.
*
* Since: 2.10
*/
signals[PAGINATE] =
g_signal_new (I_("paginate"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkPrintOperationClass, paginate),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__OBJECT,
G_TYPE_BOOLEAN, 1, GTK_TYPE_PRINT_CONTEXT);
/**
* GtkPrintOperation::request-page-setup:
* @operation: the #GtkPrintOperation on which the signal was emitted
* @context: the #GtkPrintContext for the current operation
* @page_nr: the number of the currently printed page
* @setup: the #GtkPageSetup
*
* Gets emitted once for every page that is printed, to give
* the application a chance to modify the page setup. Any changes
* done to @setup will be in force only for printing this page.
*
* Since: 2.10
*/
signals[REQUEST_PAGE_SETUP] =
g_signal_new (I_("request-page-setup"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkPrintOperationClass, request_page_setup),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_INT_OBJECT,
G_TYPE_NONE, 3,
GTK_TYPE_PRINT_CONTEXT,
G_TYPE_INT,
GTK_TYPE_PAGE_SETUP);
/**
* GtkPrintOperation::draw-page:
* @operation: the #GtkPrintOperation on which the signal was emitted
* @context: the #GtkPrintContext for the current operation
* @page_nr: the number of the currently printed page
*
* Gets emitted for every page that is printed. The signal handler
* must render the @page_nr's page onto the cairo context obtained
* from @context using gtk_print_context_get_cairo().
*
* <informalexample><programlisting>
* FIXME: need an example here
* </programlisting></informalexample>
*
* Use gtk_print_operation_set_use_full_page() and
* gtk_print_operation_set_unit() before starting the print operation
* to set up the transformation of the cairo context according to your
* needs.
*
* Since: 2.10
*/
signals[DRAW_PAGE] =
g_signal_new (I_("draw-page"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkPrintOperationClass, draw_page),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_INT,
G_TYPE_NONE, 2,
GTK_TYPE_PRINT_CONTEXT,
G_TYPE_INT);
/**
* GtkPrintOperation::end-print:
* @operation: the #GtkPrintOperation on which the signal was emitted
* @context: the #GtkPrintContext for the current operation
*
* Gets emitted after all pages have been rendered.
* A handler for this signal can clean up any resources that have
* been allocated in the ::begin-print handler.
*
* Since: 2.10
*/
signals[END_PRINT] =
g_signal_new (I_("end-print"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkPrintOperationClass, end_print),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GTK_TYPE_PRINT_CONTEXT);
/**
* GtkPrintOperation::status-changed:
* @operation: the #GtkPrintOperation on which the signal was emitted
*
* Gets emitted at between the various phases of the print operation.
* See #GtkPrintStatus for the phases that are being discriminated.
* Use gtk_print_operation_get_status() to find out the current
* status.
*
* Since: 2.10
*/
signals[STATUS_CHANGED] =
g_signal_new (I_("status-changed"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkPrintOperationClass, status_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkPrintOperation:default-page-setup:
*
* The #GtkPageSetup used by default.
*
* This page setup will be used by gtk_print_operation_run(),
* but it can be overridden on a per-page basis by connecting
* to the ::request-page-setup signal.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_DEFAULT_PAGE_SETUP,
g_param_spec_object ("default-page-setup",
P_("Default Page Setup"),
P_("The GtkPageSetup used by default"),
GTK_TYPE_PAGE_SETUP,
GTK_PARAM_READWRITE));
/**
* GtkPrintOperation:print-settings:
*
* The #GtkPrintSettings used for initializing the dialog.
*
* Setting this property is typically used to re-establish
* print settings from a previous print operation, see
* gtk_print_operation_run().
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_PRINT_SETTINGS,
g_param_spec_object ("print-settings",
P_("Print Settings"),
P_("The GtkPrintSettings used for initializing the dialog"),
GTK_TYPE_PRINT_SETTINGS,
GTK_PARAM_READWRITE));
/**
* GtkPrintOperation:job-name:
*
* A string used to identify the job (e.g. in monitoring
* applications like eggcups).
*
* If you don't set a job name, GTK+ picks a default one
* by numbering successive print jobs.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_JOB_NAME,
g_param_spec_string ("job-name",
P_("Job Name"),
P_("A string used for identifying the print job."),
"",
GTK_PARAM_READWRITE));
/**
* GtkPrintOperation:n-pages:
*
* The number of pages in the document.
*
* This <emphasis>must</emphasis> be set to a positive number
* before the rendering starts. It may be set in a ::begin-print
* signal hander.
*
* Note that the page numbers passed to the ::request-page-setup
* and ::draw-page signals are 0-based, i.e. if the user chooses
* to print all pages, the last ::draw-page signal will be for
* page @n_pages - 1.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_N_PAGES,
g_param_spec_int ("n-pages",
P_("Number of Pages"),
P_("The number of pages in the document."),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE));
/**
* GtkPrintOperation:current-page:
*
* The current page in the document.
*
* If this is set before gtk_print_operation_run(),
* the user will be able to select to print only the current page.
*
* Note that this only makes sense for pre-paginated documents.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_CURRENT_PAGE,
g_param_spec_int ("current-page",
P_("Current Page"),
P_("The current page in the document."),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE));
/**
* GtkPrintOperation:use-full-page:
*
* If %TRUE, the transformation for the cairo context obtained
* from #GtkPrintContext puts the origin at the top left corner
* of the page (which may not be the top left corner of the sheet,
* depending on page orientation and the number of pages per sheet).
* Otherwise, the origin is at the top left corner of the imageable
* area (i.e. inside the margins).
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_USE_FULL_PAGE,
g_param_spec_boolean ("use-full-page",
P_("Use full page"),
P_("TRUE if the the origin of the context should be at the corner of the page and not the corner of the imageable area"),
FALSE,
GTK_PARAM_READWRITE));
/**
* GtkPrintOperation:track-print-status:
*
* If %TRUE, the print operation will try to continue report on
* the status of the print job in the printer queues and printer.
* This can allow your application to show things like "out of paper"
* issues, and when the print job actually reaches the printer.
* However, this is often implemented using polling, and should
* not be enabled unless needed.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_USE_FULL_PAGE,
g_param_spec_boolean ("track-print-status",
P_("Track Print Status"),
P_("TRUE if the print operation will continue to report on the print job status after the print data has been sent to the printer or print server."),
FALSE,
GTK_PARAM_READWRITE));
/**
* GtkPrintOperation:unit:
*
* The transformation for the cairo context obtained from
* #GtkPrintContext is set up in such a way that distances
* are measured in units of @unit.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_UNIT,
g_param_spec_enum ("unit",
P_("Unit"),
P_("The unit in which distances can be measured in the context"),
GTK_TYPE_UNIT,
GTK_UNIT_PIXEL,
GTK_PARAM_READWRITE));
/**
* GtkPrintOperation:show-dialog:
*
* Determines whether calling gtk_print_operation_run() will present
* a print dialog to the user, or just print to the default printer.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_SHOW_DIALOG,
g_param_spec_boolean ("show-dialog",
P_("Show Dialog"),
P_("TRUE if gtk_print_operation_run() should show the print dialog."),
TRUE,
GTK_PARAM_READWRITE));
/**
* GtkPrintOperation:pdf-target:
*
* The name of a PDF file to generate instead of showing
* the print dialog.
*
* The intended use of this property is for implementing
* "Export to PDF" actions.
*
* "Print to PDF" support is independent of this and is done
* by letting the user pick the "Print to PDF" item from the
* list of printers in the print dialog.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_JOB_NAME,
g_param_spec_string ("pdf-target",
P_("PDF target filename"),
P_("PDF target filename"),
NULL,
GTK_PARAM_READWRITE));
/**
* GtkPrintOperation:status:
*
* The status of the print operation.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_STATUS,
g_param_spec_enum ("status",
P_("Status"),
P_("The status of the print operation"),
GTK_TYPE_PRINT_STATUS,
GTK_PRINT_STATUS_INITIAL,
GTK_PARAM_READABLE));
/**
* GtkPrintOperation:status-string:
*
* A string representation of the status of the print operation.
* The string is translated and suitable for displaying the print
* status e.g. in a #GtkStatusbar.
*
* See the ::status property for a status value that is suitable
* for programmatic use.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_STATUS_STRING,
g_param_spec_string ("status-string",
P_("Status String"),
P_("A human-readable description of the status"),
"",
GTK_PARAM_READABLE));
}
/**
* gtk_print_operation_new:
*
* Creates a new #GtkPrintOperation.
*
* Returns: a new #GtkPrintOperation
*
* Since: 2.10
*/
GtkPrintOperation *
gtk_print_operation_new (void)
{
GtkPrintOperation *print_operation;
print_operation = g_object_new (GTK_TYPE_PRINT_OPERATION, NULL);
return print_operation;
}
/**
* gtk_print_operation_set_default_page_setup:
* @op: a #GtkPrintOperation
* @default_page_setup: a #GtkPageSetup, or %NULL
*
* Makes @default_page_setup the default page setup for @op.
*
* This page setup will be used by gtk_print_operation_run(),
* but it can be overridden on a per-page basis by connecting
* to the ::request-page-setup signal.
*
* Since: 2.10
**/
void
gtk_print_operation_set_default_page_setup (GtkPrintOperation *op,
GtkPageSetup *default_page_setup)
{
GtkPrintOperationPrivate *priv;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
g_return_if_fail (default_page_setup == NULL ||
GTK_IS_PAGE_SETUP (default_page_setup));
priv = op->priv;
if (default_page_setup != priv->default_page_setup)
{
if (default_page_setup)
g_object_ref (default_page_setup);
if (priv->default_page_setup)
g_object_unref (priv->default_page_setup);
priv->default_page_setup = default_page_setup;
g_object_notify (G_OBJECT (op), "default-page-setup");
}
}
/**
* gtk_print_operation_get_default_page_setup:
* @op: a #GtkPrintOperation
*
* Returns the default page setup, see
* gtk_print_operation_set_default_page_setup().
*
* Returns: the default page setup
*
* Since: 2.10
*/
GtkPageSetup *
gtk_print_operation_get_default_page_setup (GtkPrintOperation *op)
{
g_return_val_if_fail (GTK_IS_PRINT_OPERATION (op), NULL);
return op->priv->default_page_setup;
}
/**
* gtk_print_operation_set_print_settings:
* @op: a #GtkPrintOperation
* @print_settings: #GtkPrintSettings, or %NULL
*
* Sets the print settings for @op. This is typically used to
* re-establish print settings from a previous print operation,
* see gtk_print_operation_run().
*
* Since: 2.10
**/
void
gtk_print_operation_set_print_settings (GtkPrintOperation *op,
GtkPrintSettings *print_settings)
{
GtkPrintOperationPrivate *priv;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
g_return_if_fail (print_settings == NULL ||
GTK_IS_PRINT_SETTINGS (print_settings));
priv = op->priv;
if (print_settings != priv->print_settings)
{
if (print_settings)
g_object_ref (print_settings);
if (priv->print_settings)
g_object_unref (priv->print_settings);
priv->print_settings = print_settings;
g_object_notify (G_OBJECT (op), "print-settings");
}
}
/**
* gtk_print_operation_get_print_settings:
* @op: a #GtkPrintOperation
*
* Returns the current print settings.
*
* Note that the return value is %NULL until either
* gtk_print_operation_set_print_settings() or
* gtk_print_operation_run() have been called.
*
* Return value: the current print settings of @op.
*
* Since: 2.10
**/
GtkPrintSettings *
gtk_print_operation_get_print_settings (GtkPrintOperation *op)
{
g_return_val_if_fail (GTK_IS_PRINT_OPERATION (op), NULL);
return op->priv->print_settings;
}
/**
* gtk_print_operation_set_job_name:
* @op: a #GtkPrintOperation
* @job_name: a string that identifies the print job
*
* Sets the name of the print job. The name is used to identify
* the job (e.g. in monitoring applications like eggcups).
*
* If you don't set a job name, GTK+ picks a default one by
* numbering successive print jobs.
*
* Since: 2.10
**/
void
gtk_print_operation_set_job_name (GtkPrintOperation *op,
const gchar *job_name)
{
GtkPrintOperationPrivate *priv;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
g_return_if_fail (g_utf8_validate (job_name, -1, NULL));
priv = op->priv;
g_free (priv->job_name);
priv->job_name = g_strdup (job_name);
g_object_notify (G_OBJECT (op), "job-name");
}
/**
* gtk_print_operation_set_n_pages:
* @op: a #GtkPrintOperation
* @n_pages: the number of pages
*
* Sets the number of pages in the document.
*
* This <emphasis>must</emphasis> be set to a positive number
* before the rendering starts. It may be set in a ::begin-print
* signal hander.
*
* Note that the page numbers passed to the ::request-page-setup
* and ::draw-page signals are 0-based, i.e. if the user chooses
* to print all pages, the last ::draw-page signal will be
* for page @n_pages - 1.
*
* Since: 2.10
**/
void
gtk_print_operation_set_n_pages (GtkPrintOperation *op,
gint n_pages)
{
GtkPrintOperationPrivate *priv;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
g_return_if_fail (n_pages > 0);
priv = op->priv;
g_return_if_fail (priv->current_page == -1 ||
priv->current_page < n_pages);
if (priv->nr_of_pages != n_pages)
{
priv->nr_of_pages = n_pages;
g_object_notify (G_OBJECT (op), "n-pages");
}
}
/**
* gtk_print_operation_set_current_page:
* @op: a #GtkPrintOperation
* @current_page: the current page, 0-based
*
* Sets the current page.
*
* If this is called before gtk_print_operation_run(),
* the user will be able to select to print only the current page.
*
* Note that this only makes sense for pre-paginated documents.
*
* Since: 2.10
**/
void
gtk_print_operation_set_current_page (GtkPrintOperation *op,
gint current_page)
{
GtkPrintOperationPrivate *priv;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
g_return_if_fail (current_page >= 0);
priv = op->priv;
g_return_if_fail (priv->nr_of_pages == -1 ||
current_page < priv->nr_of_pages);
if (priv->current_page != current_page)
{
priv->current_page = current_page;
g_object_notify (G_OBJECT (op), "current-page");
}
}
/**
* gtk_print_operation_set_use_full_page:
* @op: a #GtkPrintOperation
* @full_page: %TRUE to set up the #GtkPrintContext for the full page
*
* If @full_page is %TRUE, the transformation for the cairo context
* obtained from #GtkPrintContext puts the origin at the top left
* corner of the page (which may not be the top left corner of the
* sheet, depending on page orientation and the number of pages per
* sheet). Otherwise, the origin is at the top left corner of the
* imageable area (i.e. inside the margins).
*
* Since: 2.10
*/
void
gtk_print_operation_set_use_full_page (GtkPrintOperation *op,
gboolean full_page)
{
GtkPrintOperationPrivate *priv;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
full_page = full_page != FALSE;
priv = op->priv;
if (priv->use_full_page != full_page)
{
priv->use_full_page = full_page;
g_object_notify (G_OBJECT (op), "use-full-page");
}
}
/**
* gtk_print_operation_set_unit:
* @op: a #GtkPrintOperation
* @unit: the unit to use
*
* Sets up the transformation for the cairo context obtained from
* #GtkPrintContext in such a way that distances are measured in
* units of @unit.
*
* Since: 2.10
*/
void
gtk_print_operation_set_unit (GtkPrintOperation *op,
GtkUnit unit)
{
GtkPrintOperationPrivate *priv;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
priv = op->priv;
if (priv->unit != unit)
{
priv->unit = unit;
g_object_notify (G_OBJECT (op), "unit");
}
}
/**
* gtk_print_operation_set_track_print_status:
* @op: a #GtkPrintOperation
* @track_status: %TRUE to track status after printing
*
* If track_status is %TRUE, the print operation will try to continue report
* on the status of the print job in the printer queues and printer. This
* can allow your application to show things like "out of paper" issues,
* and when the print job actually reaches the printer.
*
* This function is often implemented using some form of polling, so it should
* not be enabled unless needed.
*
* Since: 2.10
*/
void
gtk_print_operation_set_track_print_status (GtkPrintOperation *op,
gboolean track_status)
{
GtkPrintOperationPrivate *priv;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
priv = op->priv;
if (priv->track_print_status != track_status)
{
priv->track_print_status = track_status;
g_object_notify (G_OBJECT (op), "track-print-status");
}
}
void
_gtk_print_operation_set_status (GtkPrintOperation *op,
GtkPrintStatus status,
const gchar *string)
{
GtkPrintOperationPrivate *priv = op->priv;
static const gchar *status_strs[] = {
/* translators, strip the prefix up to and including the first | */
N_("print operation status|Initial state"),
/* translators, strip the prefix up to and including the first | */
N_("print operation status|Preparing to print"),
/* translators, strip the prefix up to and including the first | */
N_("print operation status|Generating data"),
/* translators, strip the prefix up to and including the first | */
N_("print operation status|Sending data"),
/* translators, strip the prefix up to and including the first | */
N_("print operation status|Waiting"),
/* translators, strip the prefix up to and including the first | */
N_("print operation status|Blocking on issue"),
/* translators, strip the prefix up to and including the first | */
N_("print operation status|Printing"),
/* translators, strip the prefix up to and including the first | */
N_("print operation status|Finished"),
/* translators, strip the prefix up to and including the first | */
N_("print operation status|Finished with error")
};
if (status < 0 || status > GTK_PRINT_STATUS_FINISHED_ABORTED)
status = GTK_PRINT_STATUS_FINISHED_ABORTED;
if (string == NULL)
string = g_strip_context (status_strs[status],
gettext (status_strs[status]));
if (priv->status == status &&
strcmp (string, priv->status_string) == 0)
return;
g_free (priv->status_string);
priv->status_string = g_strdup (string);
priv->status = status;
g_object_notify (G_OBJECT (op), "status");
g_object_notify (G_OBJECT (op), "status-string");
g_signal_emit (op, signals[STATUS_CHANGED], 0);
}
/**
* gtk_print_operation_get_status:
* @op: a #GtkPrintOperation
*
* Returns the status of the print operation.
* Also see gtk_print_operation_get_status_string().
*
* Return value: the status of the print operation
*
* Since: 2.10
**/
GtkPrintStatus
gtk_print_operation_get_status (GtkPrintOperation *op)
{
g_return_val_if_fail (GTK_IS_PRINT_OPERATION (op),
GTK_PRINT_STATUS_FINISHED_ABORTED);
return op->priv->status;
}
/**
* gtk_print_operation_get_status_string:
* @op: a #GtkPrintOperation
*
* Returns a string representation of the status of the
* print operation. The string is translated and suitable
* for displaying the print status e.g. in a #GtkStatusbar.
*
* Use gtk_print_operation_get_status() to obtain a status
* value that is suitable for programmatic use.
*
* Return value: a string representation of the status
* of the print operation
*
* Since: 2.10
**/
G_CONST_RETURN gchar *
gtk_print_operation_get_status_string (GtkPrintOperation *op)
{
g_return_val_if_fail (GTK_IS_PRINT_OPERATION (op), "");
return op->priv->status_string;
}
/**
* gtk_print_operation_is_finished:
* @op: a #GtkPrintOperation
*
* A convenience function to find out if the print operation
* is finished, either successfully (%GTK_PRINT_STATUS_FINISHED)
* or unsuccessfully (%GTK_PRINT_STATUS_FINISHED_ABORTED).
*
* Return value: %TRUE, if the print operation is finished.
*
* Since: 2.10
**/
gboolean
gtk_print_operation_is_finished (GtkPrintOperation *op)
{
GtkPrintOperationPrivate *priv;
g_return_val_if_fail (GTK_IS_PRINT_OPERATION (op), TRUE);
priv = op->priv;
return
priv->status == GTK_PRINT_STATUS_FINISHED_ABORTED ||
priv->status == GTK_PRINT_STATUS_FINISHED;
}
/**
* gtk_print_operation_set_show_dialog:
* @op: a #GtkPrintOperation
* @show_dialog: %TRUE to show the print dialog
*
* Sets whether calling gtk_print_operation_run() will present
* a print dialog to the user, or just print to the default printer.
*
* Since: 2.10
*/
void
gtk_print_operation_set_show_dialog (GtkPrintOperation *op,
gboolean show_dialog)
{
GtkPrintOperationPrivate *priv;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
priv = op->priv;
show_dialog = show_dialog != FALSE;
if (priv->show_dialog != show_dialog)
{
priv->show_dialog = show_dialog;
g_object_notify (G_OBJECT (op), "show-dialog");
}
}
/**
* gtk_print_operation_set_pdf_target:
* @op: a #GtkPrintOperation
* @filename: the filename for the PDF file
*
* Sets up the #GtkPrintOperation to generate a PDF file instead
* of showing the print dialog. The indended use of this function
* is for implementing "Export to PDF" actions.
*
* "Print to PDF" support is independent of this and is done
* by letting the user pick the "Print to PDF" item from the list
* of printers in the print dialog.
*
* Since: 2.10
*/
void
gtk_print_operation_set_pdf_target (GtkPrintOperation *op,
const gchar *filename)
{
GtkPrintOperationPrivate *priv;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
priv = op->priv;
g_free (priv->pdf_target);
priv->pdf_target = g_strdup (filename);
g_object_notify (G_OBJECT (op), "pdf-target");
}
/* Creates the initial page setup used for printing unless the
* app overrides this on a per-page basis using request_page_setup.
*
* Data is taken from, in order, if existing:
*
* PrintSettings returned from the print dialog
* (initial dialog values are set from default_page_setup
* if unset in app specified print_settings)
* default_page_setup
* per-locale default setup
*/
static GtkPageSetup *
create_page_setup (GtkPrintOperation *op)
{
GtkPrintOperationPrivate *priv = op->priv;
GtkPageSetup *page_setup;
GtkPrintSettings *settings;
if (priv->default_page_setup)
page_setup = gtk_page_setup_copy (priv->default_page_setup);
else
page_setup = gtk_page_setup_new ();
settings = priv->print_settings;
if (settings)
{
GtkPaperSize *paper_size;
if (gtk_print_settings_has_key (settings, GTK_PRINT_SETTINGS_ORIENTATION))
gtk_page_setup_set_orientation (page_setup,
gtk_print_settings_get_orientation (settings));
paper_size = gtk_print_settings_get_paper_size (settings);
if (paper_size)
{
gtk_page_setup_set_paper_size (page_setup, paper_size);
gtk_paper_size_free (paper_size);
}
/* TODO: Margins? */
}
return page_setup;
}
static void
pdf_start_page (GtkPrintOperation *op,
GtkPrintContext *print_context,
GtkPageSetup *page_setup)
{
GtkPaperSize *paper_size;
double 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 (op->priv->surface, w, h);
}
static void
pdf_end_page (GtkPrintOperation *op,
GtkPrintContext *print_context)
{
cairo_t *cr;
cr = gtk_print_context_get_cairo (print_context);
cairo_show_page (cr);
}
static void
pdf_end_run (GtkPrintOperation *op,
gboolean wait)
{
GtkPrintOperationPrivate *priv = op->priv;
cairo_surface_destroy (priv->surface);
priv->surface = NULL;
}
static GtkPrintOperationResult
run_pdf (GtkPrintOperation *op,
GtkWindow *parent,
gboolean *do_print,
GError **error)
{
GtkPrintOperationPrivate *priv = op->priv;
GtkPageSetup *page_setup;
double width, height;
/* This will be overwritten later by the non-default size, but
we need to pass some size: */
page_setup = create_page_setup (op);
width = gtk_page_setup_get_paper_width (page_setup, GTK_UNIT_POINTS);
height = gtk_page_setup_get_paper_height (page_setup, GTK_UNIT_POINTS);
g_object_unref (page_setup);
priv->surface = cairo_pdf_surface_create (priv->pdf_target,
width, height);
cairo_pdf_surface_set_dpi (priv->surface, 300, 300);
priv->dpi_x = 72;
priv->dpi_y = 72;
priv->print_pages = GTK_PRINT_PAGES_ALL;
priv->page_ranges = NULL;
priv->num_page_ranges = 0;
priv->manual_num_copies = 1;
priv->manual_collation = FALSE;
priv->manual_reverse = FALSE;
priv->manual_page_set = GTK_PAGE_SET_ALL;
priv->manual_scale = 1.0;
priv->manual_orientation = TRUE;
*do_print = TRUE;
priv->start_page = pdf_start_page;
priv->end_page = pdf_end_page;
priv->end_run = pdf_end_run;
return GTK_PRINT_OPERATION_RESULT_APPLY;
}
typedef struct
{
GtkPrintOperation *op;
gint uncollated_copies;
gint collated_copies;
gint uncollated, collated;
gint range, num_ranges;
GtkPageRange *ranges;
GtkPageRange one_range;
gint page, start, end, inc;
GtkPageSetup *initial_page_setup;
GtkPrintContext *print_context;
} PrintPagesData;
static void
find_range (PrintPagesData *data)
{
GtkPageRange *range;
range = &data->ranges[data->range];
if (data->inc < 0)
{
data->start = range->end;
data->end = range->start - 1;
}
else
{
data->start = range->start;
data->end = range->end + 1;
}
}
static gboolean
increment_page_sequence (PrintPagesData *data)
{
GtkPrintOperationPrivate *priv = data->op->priv;
do {
data->page += data->inc;
if (data->page == data->end)
{
data->range += data->inc;
if (data->range == -1 || data->range == data->num_ranges)
{
data->uncollated++;
if (data->uncollated == data->uncollated_copies)
return FALSE;
data->range = data->inc < 0 ? data->num_ranges - 1 : 0;
}
find_range (data);
data->page = data->start;
}
}
while ((priv->manual_page_set == GTK_PAGE_SET_EVEN && data->page % 2 == 0) ||
(priv->manual_page_set == GTK_PAGE_SET_ODD && data->page % 2 == 1));
return TRUE;
}
static void
print_pages_idle_done (gpointer user_data)
{
PrintPagesData *data;
GtkPrintOperationPrivate *priv;
data = (PrintPagesData*)user_data;
priv = data->op->priv;
g_object_unref (data->print_context);
g_object_unref (data->initial_page_setup);
g_object_unref (data->op);
g_free (data);
priv->print_pages_idle_id = 0;
}
static gboolean
print_pages_idle (gpointer user_data)
{
PrintPagesData *data;
GtkPrintOperationPrivate *priv;
GtkPageSetup *page_setup;
cairo_t *cr;
gboolean done = FALSE;
GDK_THREADS_ENTER ();
data = (PrintPagesData*)user_data;
priv = data->op->priv;
if (priv->status == GTK_PRINT_STATUS_PREPARING)
{
if (g_signal_has_handler_pending (data->op, signals[PAGINATE], 0, FALSE))
{
gboolean paginated = FALSE;
g_signal_emit (data->op, signals[PAGINATE], 0, data->print_context, &paginated);
if (!paginated)
goto out;
}
/* FIXME handle this better */
if (priv->nr_of_pages == 0)
g_warning ("no pages to print");
/* Initialize parts of PrintPagesData that depend on nr_of_pages
*/
if (priv->print_pages == GTK_PRINT_PAGES_RANGES)
{
data->ranges = priv->page_ranges;
data->num_ranges = priv->num_page_ranges;
}
else if (priv->print_pages == GTK_PRINT_PAGES_CURRENT &&
priv->current_page != -1)
{
data->ranges = &data->one_range;
data->num_ranges = 1;
data->ranges[0].start = priv->current_page;
data->ranges[0].end = priv->current_page;
}
else
{
data->ranges = &data->one_range;
data->num_ranges = 1;
data->ranges[0].start = 0;
data->ranges[0].end = priv->nr_of_pages - 1;
}
if (data->op->priv->manual_reverse)
{
data->range = data->num_ranges - 1;
data->inc = -1;
}
else
{
data->range = 0;
data->inc = 1;
}
find_range (data);
/* go back one page, since we preincrement below */
data->page = data->start - data->inc;
data->collated = data->collated_copies - 1;
_gtk_print_operation_set_status (data->op,
GTK_PRINT_STATUS_GENERATING_DATA,
NULL);
goto out;
}
data->collated++;
if (data->collated == data->collated_copies)
{
data->collated = 0;
if (!increment_page_sequence (data))
{
g_signal_emit (data->op, signals[END_PRINT], 0, data->print_context);
cairo_surface_finish (data->op->priv->surface);
priv->end_run (data->op, TRUE);
done = TRUE;
goto out;
}
}
page_setup = gtk_page_setup_copy (data->initial_page_setup);
g_signal_emit (data->op, signals[REQUEST_PAGE_SETUP], 0,
data->print_context, data->page, page_setup);
_gtk_print_context_set_page_setup (data->print_context, page_setup);
data->op->priv->start_page (data->op, data->print_context, page_setup);
cr = gtk_print_context_get_cairo (data->print_context);
cairo_save (cr);
if (priv->manual_scale != 100.0)
cairo_scale (cr,
priv->manual_scale,
priv->manual_scale);
if (priv->manual_orientation)
_gtk_print_context_rotate_according_to_orientation (data->print_context);
if (!priv->use_full_page)
_gtk_print_context_translate_into_margin (data->print_context);
g_signal_emit (data->op, signals[DRAW_PAGE], 0,
data->print_context, data->page);
priv->end_page (data->op, data->print_context);
cairo_restore (cr);
g_object_unref (page_setup);
out:
GDK_THREADS_LEAVE ();
return !done;
}
static void
print_pages (GtkPrintOperation *op,
gboolean wait)
{
GtkPrintOperationPrivate *priv = op->priv;
GtkPageSetup *initial_page_setup;
GtkPrintContext *print_context;
int uncollated_copies, collated_copies;
PrintPagesData *data;
_gtk_print_operation_set_status (op, GTK_PRINT_STATUS_PREPARING, NULL);
print_context = _gtk_print_context_new (op);
initial_page_setup = create_page_setup (op);
_gtk_print_context_set_page_setup (print_context, initial_page_setup);
g_signal_emit (op, signals[BEGIN_PRINT], 0, print_context);
if (priv->manual_collation)
{
uncollated_copies = priv->manual_num_copies;
collated_copies = 1;
}
else
{
uncollated_copies = 1;
collated_copies = priv->manual_num_copies;
}
data = g_new0 (PrintPagesData, 1);
data->op = g_object_ref (op);
data->uncollated_copies = uncollated_copies;
data->collated_copies = collated_copies;
data->initial_page_setup = initial_page_setup;
data->print_context = print_context;
if (wait)
{
/* FIXME replace this with a recursive mainloop */
while (print_pages_idle (data))
{
/* Iterate the mainloop so that we redraw windows */
while (gtk_events_pending ())
gtk_main_iteration ();
}
}
else
priv->print_pages_idle_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE,
print_pages_idle,
data,
print_pages_idle_done);
}
/**
* gtk_print_operation_run:
* @op: a #GtkPrintOperation
* @parent: Transient parent of the dialog, or %NULL
* @error: Return location for errors, or %NULL
*
* Runs the print operation, by first letting the user modify
* print settings in the print dialog, and then print the
* document.
*
* Note that this function does not return until the rendering of all
* pages is complete. You can connect to the ::status-changed signal on
* @op to obtain some information about the progress of the print operation.
* Furthermore, it may use a recursive mainloop to show the print dialog.
* See gtk_print_operation_run_async() if this is a problem.
*
* <informalexample><programlisting>
* FIXME: need an example here
* </programlisting></informalexample>
*
* Return value: the result of the print operation. A return value of
* %GTK_PRINT_OPERATION_RESULT_APPLY indicates that the printing was
* completed successfully. In this case, it is a good idea to obtain
* the used print settings with gtk_print_operation_get_print_settings()
* and store them for reuse with the next print operation.
*
* Since: 2.10
**/
GtkPrintOperationResult
gtk_print_operation_run (GtkPrintOperation *op,
GtkWindow *parent,
GError **error)
{
GtkPrintOperationPrivate *priv;
GtkPrintOperationResult result;
gboolean do_print;
g_return_val_if_fail (GTK_IS_PRINT_OPERATION (op),
GTK_PRINT_OPERATION_RESULT_ERROR);
priv = op->priv;
if (priv->pdf_target != NULL)
result = run_pdf (op, parent, &do_print, error);
else
result = _gtk_print_operation_platform_backend_run_dialog (op,
parent,
&do_print,
error);
if (do_print)
print_pages (op, TRUE);
else
_gtk_print_operation_set_status (op, GTK_PRINT_STATUS_FINISHED_ABORTED, NULL);
return result;
}
/**
* gtk_print_operation_run_async:
* @op: a #GtkPrintOperation
* @parent: Transient parent of the dialog, or %NULL
*
* Runs the print operation, by first letting the user modify
* print settings in the print dialog, and then print the
* document.
*
* In contrast to gtk_print_operation_run(), this function returns after
* showing the print dialog on platforms that support this, and handles
* the printing by connecting a signal handler to the ::response signal
* of the dialog.
*
* If you use this function, it is recommended that you store the modified
* #GtkPrintSettings in a ::begin-print or ::end-print signal handler.
*
* Since: 2.10
**/
void
gtk_print_operation_run_async (GtkPrintOperation *op,
GtkWindow *parent)
{
GtkPrintOperationPrivate *priv;
gboolean do_print;
g_return_if_fail (GTK_IS_PRINT_OPERATION (op));
priv = op->priv;
if (priv->pdf_target != NULL)
{
run_pdf (op, parent, &do_print, NULL);
if (do_print)
print_pages (op, FALSE);
else
_gtk_print_operation_set_status (op, GTK_PRINT_STATUS_FINISHED_ABORTED, NULL);
}
else
_gtk_print_operation_platform_backend_run_dialog_async (op,
parent,
print_pages);
}
#define __GTK_PRINT_OPERATION_C__
#include "gtkaliasdef.c"
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