PIKApp/app/core/pikapdbprogress.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
*
* pikapdbprogress.c
* Copyright (C) 2004 Michael Natterer <mitch@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/>.
*/
#include "config.h"
#include <string.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libpikabase/pikabase.h"
#include "core-types.h"
#include "core/pikacontext.h"
#include "pdb/pikapdb.h"
#include "pika.h"
#include "pikaparamspecs.h"
#include "pikapdbprogress.h"
#include "pikaprogress.h"
#include "pika-intl.h"
enum
{
PROP_0,
PROP_PDB,
PROP_CONTEXT,
PROP_CALLBACK_NAME
};
static void pika_pdb_progress_class_init (PikaPdbProgressClass *klass);
static void pika_pdb_progress_init (PikaPdbProgress *progress,
PikaPdbProgressClass *klass);
static void pika_pdb_progress_progress_iface_init (PikaProgressInterface *iface);
static void pika_pdb_progress_constructed (GObject *object);
static void pika_pdb_progress_dispose (GObject *object);
static void pika_pdb_progress_finalize (GObject *object);
static void pika_pdb_progress_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static PikaProgress * pika_pdb_progress_progress_start (PikaProgress *progress,
gboolean cancellable,
const gchar *message);
static void pika_pdb_progress_progress_end (PikaProgress *progress);
static gboolean pika_pdb_progress_progress_is_active (PikaProgress *progress);
static void pika_pdb_progress_progress_set_text (PikaProgress *progress,
const gchar *message);
static void pika_pdb_progress_progress_set_value (PikaProgress *progress,
gdouble percentage);
static gdouble pika_pdb_progress_progress_get_value (PikaProgress *progress);
static void pika_pdb_progress_progress_pulse (PikaProgress *progress);
static guint32 pika_pdb_progress_progress_get_window_id (PikaProgress *progress);
static GObjectClass *parent_class = NULL;
GType
pika_pdb_progress_get_type (void)
{
static GType type = 0;
if (! type)
{
const GTypeInfo info =
{
sizeof (PikaPdbProgressClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) pika_pdb_progress_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (PikaPdbProgress),
0, /* n_preallocs */
(GInstanceInitFunc) pika_pdb_progress_init,
};
const GInterfaceInfo progress_iface_info =
{
(GInterfaceInitFunc) pika_pdb_progress_progress_iface_init,
NULL, /* iface_finalize */
NULL /* iface_data */
};
type = g_type_register_static (G_TYPE_OBJECT,
"PikaPdbProgress",
&info, 0);
g_type_add_interface_static (type, PIKA_TYPE_PROGRESS,
&progress_iface_info);
}
return type;
}
static void
pika_pdb_progress_class_init (PikaPdbProgressClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->constructed = pika_pdb_progress_constructed;
object_class->dispose = pika_pdb_progress_dispose;
object_class->finalize = pika_pdb_progress_finalize;
object_class->set_property = pika_pdb_progress_set_property;
g_object_class_install_property (object_class, PROP_PDB,
g_param_spec_object ("pdb", NULL, NULL,
PIKA_TYPE_PDB,
PIKA_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_CONTEXT,
g_param_spec_object ("context", NULL, NULL,
PIKA_TYPE_CONTEXT,
PIKA_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_CALLBACK_NAME,
g_param_spec_string ("callback-name",
NULL, NULL,
NULL,
PIKA_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
pika_pdb_progress_init (PikaPdbProgress *progress,
PikaPdbProgressClass *klass)
{
klass->progresses = g_list_prepend (klass->progresses, progress);
}
static void
pika_pdb_progress_progress_iface_init (PikaProgressInterface *iface)
{
iface->start = pika_pdb_progress_progress_start;
iface->end = pika_pdb_progress_progress_end;
iface->is_active = pika_pdb_progress_progress_is_active;
iface->set_text = pika_pdb_progress_progress_set_text;
iface->set_value = pika_pdb_progress_progress_set_value;
iface->get_value = pika_pdb_progress_progress_get_value;
iface->pulse = pika_pdb_progress_progress_pulse;
iface->get_window_id = pika_pdb_progress_progress_get_window_id;
}
static void
pika_pdb_progress_constructed (GObject *object)
{
PikaPdbProgress *progress = PIKA_PDB_PROGRESS (object);
G_OBJECT_CLASS (parent_class)->constructed (object);
pika_assert (PIKA_IS_PDB (progress->pdb));
pika_assert (PIKA_IS_CONTEXT (progress->context));
}
static void
pika_pdb_progress_dispose (GObject *object)
{
PikaPdbProgressClass *klass = PIKA_PDB_PROGRESS_GET_CLASS (object);
klass->progresses = g_list_remove (klass->progresses, object);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
pika_pdb_progress_finalize (GObject *object)
{
PikaPdbProgress *progress = PIKA_PDB_PROGRESS (object);
g_clear_object (&progress->pdb);
g_clear_object (&progress->context);
g_clear_pointer (&progress->callback_name, g_free);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
pika_pdb_progress_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
PikaPdbProgress *progress = PIKA_PDB_PROGRESS (object);
switch (property_id)
{
case PROP_PDB:
if (progress->pdb)
g_object_unref (progress->pdb);
progress->pdb = g_value_dup_object (value);
break;
case PROP_CONTEXT:
if (progress->context)
g_object_unref (progress->context);
progress->context = g_value_dup_object (value);
break;
case PROP_CALLBACK_NAME:
if (progress->callback_name)
g_free (progress->callback_name);
progress->callback_name = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gdouble
pika_pdb_progress_run_callback (PikaPdbProgress *progress,
PikaProgressCommand command,
const gchar *text,
gdouble value)
{
gdouble retval = 0;
if (progress->callback_name && ! progress->callback_busy)
{
PikaValueArray *return_vals;
progress->callback_busy = TRUE;
return_vals =
pika_pdb_execute_procedure_by_name (progress->pdb,
progress->context,
NULL, NULL,
progress->callback_name,
PIKA_TYPE_PROGRESS_COMMAND, command,
G_TYPE_STRING, text,
G_TYPE_DOUBLE, value,
G_TYPE_NONE);
if (g_value_get_enum (pika_value_array_index (return_vals, 0)) !=
PIKA_PDB_SUCCESS)
{
pika_message (progress->context->pika, NULL, PIKA_MESSAGE_ERROR,
_("Unable to run %s callback. "
"The corresponding plug-in may have crashed."),
g_type_name (G_TYPE_FROM_INSTANCE (progress)));
}
else if (pika_value_array_length (return_vals) >= 2 &&
G_VALUE_HOLDS_DOUBLE (pika_value_array_index (return_vals, 1)))
{
retval = g_value_get_double (pika_value_array_index (return_vals, 1));
}
pika_value_array_unref (return_vals);
progress->callback_busy = FALSE;
}
return retval;
}
static PikaProgress *
pika_pdb_progress_progress_start (PikaProgress *progress,
gboolean cancellable,
const gchar *message)
{
PikaPdbProgress *pdb_progress = PIKA_PDB_PROGRESS (progress);
if (! pdb_progress->active)
{
pika_pdb_progress_run_callback (pdb_progress,
PIKA_PROGRESS_COMMAND_START,
message, 0.0);
pdb_progress->active = TRUE;
pdb_progress->value = 0.0;
return progress;
}
return NULL;
}
static void
pika_pdb_progress_progress_end (PikaProgress *progress)
{
PikaPdbProgress *pdb_progress = PIKA_PDB_PROGRESS (progress);
if (pdb_progress->active)
{
pika_pdb_progress_run_callback (pdb_progress,
PIKA_PROGRESS_COMMAND_END,
NULL, 0.0);
pdb_progress->active = FALSE;
pdb_progress->value = 0.0;
}
}
static gboolean
pika_pdb_progress_progress_is_active (PikaProgress *progress)
{
PikaPdbProgress *pdb_progress = PIKA_PDB_PROGRESS (progress);
return pdb_progress->active;
}
static void
pika_pdb_progress_progress_set_text (PikaProgress *progress,
const gchar *message)
{
PikaPdbProgress *pdb_progress = PIKA_PDB_PROGRESS (progress);
if (pdb_progress->active)
pika_pdb_progress_run_callback (pdb_progress,
PIKA_PROGRESS_COMMAND_SET_TEXT,
message, 0.0);
}
static void
pika_pdb_progress_progress_set_value (PikaProgress *progress,
gdouble percentage)
{
PikaPdbProgress *pdb_progress = PIKA_PDB_PROGRESS (progress);
if (pdb_progress->active)
{
pika_pdb_progress_run_callback (pdb_progress,
PIKA_PROGRESS_COMMAND_SET_VALUE,
NULL, percentage);
pdb_progress->value = percentage;
}
}
static gdouble
pika_pdb_progress_progress_get_value (PikaProgress *progress)
{
PikaPdbProgress *pdb_progress = PIKA_PDB_PROGRESS (progress);
return pdb_progress->value;
}
static void
pika_pdb_progress_progress_pulse (PikaProgress *progress)
{
PikaPdbProgress *pdb_progress = PIKA_PDB_PROGRESS (progress);
if (pdb_progress->active)
pika_pdb_progress_run_callback (pdb_progress,
PIKA_PROGRESS_COMMAND_PULSE,
NULL, 0.0);
}
static guint32
pika_pdb_progress_progress_get_window_id (PikaProgress *progress)
{
PikaPdbProgress *pdb_progress = PIKA_PDB_PROGRESS (progress);
return (guint32)
pika_pdb_progress_run_callback (pdb_progress,
PIKA_PROGRESS_COMMAND_GET_WINDOW,
NULL, 0.0);
}
PikaPdbProgress *
pika_pdb_progress_get_by_callback (PikaPdbProgressClass *klass,
const gchar *callback_name)
{
GList *list;
g_return_val_if_fail (PIKA_IS_PDB_PROGRESS_CLASS (klass), NULL);
g_return_val_if_fail (callback_name != NULL, NULL);
for (list = klass->progresses; list; list = g_list_next (list))
{
PikaPdbProgress *progress = list->data;
if (! g_strcmp0 (callback_name, progress->callback_name))
return progress;
}
return NULL;
}