PIKApp/plug-ins/help/pikahelpprogress.c

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2023-09-26 00:35:21 +02:00
/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* The PIKA Help plug-in
* Copyright (C) 1999-2008 Sven Neumann <sven@gimp.org>
* Michael Natterer <mitch@gimp.org>
* Henrik Brix Andersen <brix@gimp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/* This code is written so that it can also be compiled standalone.
* It shouldn't depend on libpika.
*/
#include "config.h"
#include <string.h>
#include <gio/gio.h>
#include "pikahelptypes.h"
#include "pikahelpprogress.h"
#include "pikahelpprogress-private.h"
struct _PikaHelpProgress
{
PikaHelpProgressVTable vtable;
gpointer user_data;
GCancellable *cancellable;
};
PikaHelpProgress *
pika_help_progress_new (const PikaHelpProgressVTable *vtable,
gpointer user_data)
{
PikaHelpProgress *progress;
g_return_val_if_fail (vtable != NULL, NULL);
progress = g_slice_new0 (PikaHelpProgress);
progress->vtable.start = vtable->start;
progress->vtable.end = vtable->end;
progress->vtable.set_value = vtable->set_value;
progress->user_data = user_data;
return progress;
}
void
pika_help_progress_free (PikaHelpProgress *progress)
{
g_return_if_fail (progress != NULL);
if (progress->cancellable)
{
g_object_unref (progress->cancellable);
progress->cancellable = NULL;
}
g_slice_free (PikaHelpProgress, progress);
}
void
pika_help_progress_cancel (PikaHelpProgress *progress)
{
g_return_if_fail (progress != NULL);
if (progress->cancellable)
g_cancellable_cancel (progress->cancellable);
}
void
_pika_help_progress_start (PikaHelpProgress *progress,
GCancellable *cancellable,
const gchar *format,
...)
{
gchar *message;
va_list args;
g_return_if_fail (progress != NULL);
if (cancellable)
g_object_ref (cancellable);
if (progress->cancellable)
g_object_unref (progress->cancellable);
progress->cancellable = cancellable;
va_start (args, format);
message = g_strdup_vprintf (format, args);
va_end (args);
if (progress->vtable.start)
progress->vtable.start (message, cancellable != NULL, progress->user_data);
g_free (message);
}
void
_pika_help_progress_update (PikaHelpProgress *progress,
gdouble percentage)
{
g_return_if_fail (progress != NULL);
if (progress->vtable.set_value)
progress->vtable.set_value (percentage, progress->user_data);
}
void
_pika_help_progress_pulse (PikaHelpProgress *progress)
{
g_return_if_fail (progress != NULL);
_pika_help_progress_update (progress, -1.0);
}
void
_pika_help_progress_finish (PikaHelpProgress *progress)
{
g_return_if_fail (progress != NULL);
if (progress->vtable.end)
progress->vtable.end (progress->user_data);
if (progress->cancellable)
{
g_object_unref (progress->cancellable);
progress->cancellable = NULL;
}
}