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gimp/app/core/gimppdbprogress.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimppdbprogress.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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <glib-object.h>
#include "core-types.h"
#include "core/gimpcontext.h"
#include "pdb/procedural_db.h"
#include "gimppdbprogress.h"
#include "gimpprogress.h"
#include "gimp-intl.h"
enum
{
PROP_0,
PROP_CONTEXT,
PROP_CALLBACK_NAME
};
static void gimp_pdb_progress_class_init (GimpPdbProgressClass *klass);
static void gimp_pdb_progress_init (GimpPdbProgress *progress,
GimpPdbProgressClass *klass);
static void gimp_pdb_progress_progress_iface_init (GimpProgressInterface *progress_iface);
static GObject * gimp_pdb_progress_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_pdb_progress_dispose (GObject *object);
static void gimp_pdb_progress_finalize (GObject *object);
static void gimp_pdb_progress_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static GimpProgress * gimp_pdb_progress_progress_start(GimpProgress *progress,
const gchar *message,
gboolean cancelable);
static void gimp_pdb_progress_progress_end (GimpProgress *progress);
static gboolean gimp_pdb_progress_progress_is_active (GimpProgress *progress);
static void gimp_pdb_progress_progress_set_text (GimpProgress *progress,
const gchar *message);
static void gimp_pdb_progress_progress_set_value (GimpProgress *progress,
gdouble percentage);
static gdouble gimp_pdb_progress_progress_get_value (GimpProgress *progress);
static void gimp_pdb_progress_progress_pulse (GimpProgress *progress);
static guint32 gimp_pdb_progress_progress_get_window (GimpProgress *progress);
static GObjectClass *parent_class = NULL;
GType
gimp_pdb_progress_get_type (void)
{
static GType type = 0;
if (! type)
{
static const GTypeInfo info =
{
sizeof (GimpPdbProgressClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_pdb_progress_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpPdbProgress),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_pdb_progress_init,
};
static const GInterfaceInfo progress_iface_info =
{
(GInterfaceInitFunc) gimp_pdb_progress_progress_iface_init,
NULL, /* iface_finalize */
NULL /* iface_data */
};
type = g_type_register_static (G_TYPE_OBJECT,
"GimpPdbProgress",
&info, 0);
g_type_add_interface_static (type, GIMP_TYPE_PROGRESS,
&progress_iface_info);
}
return type;
}
static void
gimp_pdb_progress_class_init (GimpPdbProgressClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->constructor = gimp_pdb_progress_constructor;
object_class->dispose = gimp_pdb_progress_dispose;
object_class->finalize = gimp_pdb_progress_finalize;
object_class->set_property = gimp_pdb_progress_set_property;
g_object_class_install_property (object_class, PROP_CONTEXT,
g_param_spec_object ("context", NULL, NULL,
GIMP_TYPE_CONTEXT,
G_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,
G_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_pdb_progress_init (GimpPdbProgress *progress,
GimpPdbProgressClass *klass)
{
klass->progresses = g_list_prepend (klass->progresses, progress);
}
static void
gimp_pdb_progress_progress_iface_init (GimpProgressInterface *progress_iface)
{
progress_iface->start = gimp_pdb_progress_progress_start;
progress_iface->end = gimp_pdb_progress_progress_end;
progress_iface->is_active = gimp_pdb_progress_progress_is_active;
progress_iface->set_text = gimp_pdb_progress_progress_set_text;
progress_iface->set_value = gimp_pdb_progress_progress_set_value;
progress_iface->get_value = gimp_pdb_progress_progress_get_value;
progress_iface->pulse = gimp_pdb_progress_progress_pulse;
progress_iface->get_window = gimp_pdb_progress_progress_get_window;
}
static GObject *
gimp_pdb_progress_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpPdbProgress *progress;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
progress = GIMP_PDB_PROGRESS (object);
g_assert (GIMP_IS_CONTEXT (progress->context));
return object;
}
static void
gimp_pdb_progress_dispose (GObject *object)
{
GimpPdbProgressClass *klass = GIMP_PDB_PROGRESS_GET_CLASS (object);
klass->progresses = g_list_remove (klass->progresses, object);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_pdb_progress_finalize (GObject *object)
{
GimpPdbProgress *progress = GIMP_PDB_PROGRESS (object);
if (progress->context)
{
g_object_unref (progress->context);
progress->context = NULL;
}
if (progress->callback_name)
{
g_free (progress->callback_name);
progress->callback_name = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_pdb_progress_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpPdbProgress *progress = GIMP_PDB_PROGRESS (object);
switch (property_id)
{
case PROP_CONTEXT:
if (progress->context)
g_object_unref (progress->context);
progress->context = (GimpContext *) 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
gimp_pdb_progress_run_callback (GimpPdbProgress *progress,
GimpProgressCommand command,
const gchar *text,
gdouble value)
{
gdouble retval = 0;
if (progress->callback_name && ! progress->callback_busy)
{
Argument *return_vals;
gint n_return_vals;
progress->callback_busy = TRUE;
return_vals = procedural_db_run_proc (progress->context->gimp,
progress->context,
NULL,
progress->callback_name,
&n_return_vals,
GIMP_PDB_INT32, command,
GIMP_PDB_STRING, text,
GIMP_PDB_FLOAT, value,
GIMP_PDB_END);
if (! return_vals || return_vals[0].value.pdb_int != GIMP_PDB_SUCCESS)
{
g_message (_("Unable to run %s callback. "
"The corresponding plug-in may have crashed."),
g_type_name (G_TYPE_FROM_INSTANCE (progress)));
}
else if (n_return_vals >= 2 && return_vals[1].arg_type == GIMP_PDB_FLOAT)
{
retval = return_vals[1].value.pdb_float;
}
if (return_vals)
procedural_db_destroy_args (return_vals, n_return_vals);
progress->callback_busy = FALSE;
}
return retval;
}
static GimpProgress *
gimp_pdb_progress_progress_start (GimpProgress *progress,
const gchar *message,
gboolean cancelable)
{
GimpPdbProgress *pdb_progress = GIMP_PDB_PROGRESS (progress);
if (! pdb_progress->active)
{
gimp_pdb_progress_run_callback (pdb_progress,
GIMP_PROGRESS_COMMAND_START,
message, 0.0);
pdb_progress->active = TRUE;
pdb_progress->value = 0.0;
return progress;
}
return NULL;
}
static void
gimp_pdb_progress_progress_end (GimpProgress *progress)
{
GimpPdbProgress *pdb_progress = GIMP_PDB_PROGRESS (progress);
if (pdb_progress->active)
{
gimp_pdb_progress_run_callback (pdb_progress,
GIMP_PROGRESS_COMMAND_END,
NULL, 0.0);
pdb_progress->active = FALSE;
pdb_progress->value = 0.0;
}
}
static gboolean
gimp_pdb_progress_progress_is_active (GimpProgress *progress)
{
GimpPdbProgress *pdb_progress = GIMP_PDB_PROGRESS (progress);
return pdb_progress->active;
}
static void
gimp_pdb_progress_progress_set_text (GimpProgress *progress,
const gchar *message)
{
GimpPdbProgress *pdb_progress = GIMP_PDB_PROGRESS (progress);
if (pdb_progress->active)
gimp_pdb_progress_run_callback (pdb_progress,
GIMP_PROGRESS_COMMAND_SET_TEXT,
message, 0.0);
}
static void
gimp_pdb_progress_progress_set_value (GimpProgress *progress,
gdouble percentage)
{
GimpPdbProgress *pdb_progress = GIMP_PDB_PROGRESS (progress);
if (pdb_progress->active)
{
gimp_pdb_progress_run_callback (pdb_progress,
GIMP_PROGRESS_COMMAND_SET_VALUE,
NULL, percentage);
pdb_progress->value = percentage;
}
}
static gdouble
gimp_pdb_progress_progress_get_value (GimpProgress *progress)
{
GimpPdbProgress *pdb_progress = GIMP_PDB_PROGRESS (progress);
return pdb_progress->value;
}
static void
gimp_pdb_progress_progress_pulse (GimpProgress *progress)
{
GimpPdbProgress *pdb_progress = GIMP_PDB_PROGRESS (progress);
if (pdb_progress->active)
gimp_pdb_progress_run_callback (pdb_progress,
GIMP_PROGRESS_COMMAND_PULSE,
NULL, 0.0);
}
static guint32
gimp_pdb_progress_progress_get_window (GimpProgress *progress)
{
GimpPdbProgress *pdb_progress = GIMP_PDB_PROGRESS (progress);
return (guint32)
gimp_pdb_progress_run_callback (pdb_progress,
GIMP_PROGRESS_COMMAND_GET_WINDOW,
NULL, 0.0);
}
GimpPdbProgress *
gimp_pdb_progress_get_by_callback (GimpPdbProgressClass *klass,
const gchar *callback_name)
{
GList *list;
g_return_val_if_fail (GIMP_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))
{
GimpPdbProgress *progress = list->data;
if (progress->callback_name &&
strcmp (callback_name, progress->callback_name) == 0)
return progress;
}
return NULL;
}
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