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gimp/app/plug-in/gimpplugin-progress.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* plug-in-progress.c
*
* 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 <glib-object.h>
#include "plug-in-types.h"
#include "core/gimp.h"
#include "core/gimppdbprogress.h"
#include "core/gimpprogress.h"
#include "pdb/gimpprocedure.h"
#include "pdb/procedural_db.h"
#include "plug-in.h"
#include "plug-in-progress.h"
/* local function prototypes */
static void plug_in_progress_cancel_callback (GimpProgress *progress,
PlugIn *plug_in);
/* public functions */
void
plug_in_progress_start (PlugIn *plug_in,
const gchar *message,
GimpObject *display)
{
PlugInProcFrame *proc_frame;
g_return_if_fail (plug_in != NULL);
g_return_if_fail (display == NULL || GIMP_IS_OBJECT (display));
proc_frame = plug_in_get_proc_frame (plug_in);
if (! proc_frame->progress)
{
proc_frame->progress = gimp_new_progress (plug_in->gimp, display);
if (proc_frame->progress)
{
proc_frame->progress_created = TRUE;
g_object_ref (proc_frame->progress);
}
}
if (proc_frame->progress)
{
if (! proc_frame->progress_cancel_id)
proc_frame->progress_cancel_id =
g_signal_connect (proc_frame->progress, "cancel",
G_CALLBACK (plug_in_progress_cancel_callback),
plug_in);
if (gimp_progress_is_active (proc_frame->progress))
{
if (message)
gimp_progress_set_text (proc_frame->progress, message);
if (gimp_progress_get_value (proc_frame->progress) > 0.0)
gimp_progress_set_value (proc_frame->progress, 0.0);
}
else
{
gimp_progress_start (proc_frame->progress,
message ? message : "",
TRUE);
}
}
}
void
plug_in_progress_end (PlugIn *plug_in)
{
PlugInProcFrame *proc_frame;
g_return_if_fail (plug_in != NULL);
proc_frame = plug_in_get_proc_frame (plug_in);
if (proc_frame->progress)
{
if (proc_frame->progress_cancel_id)
{
g_signal_handler_disconnect (proc_frame->progress,
proc_frame->progress_cancel_id);
proc_frame->progress_cancel_id = 0;
}
if (gimp_progress_is_active (proc_frame->progress))
gimp_progress_end (proc_frame->progress);
if (proc_frame->progress_created)
{
gimp_free_progress (plug_in->gimp, proc_frame->progress);
g_object_unref (proc_frame->progress);
proc_frame->progress = NULL;
}
}
}
void
plug_in_progress_set_text (PlugIn *plug_in,
const gchar *message)
{
PlugInProcFrame *proc_frame;
g_return_if_fail (plug_in != NULL);
proc_frame = plug_in_get_proc_frame (plug_in);
if (proc_frame->progress)
gimp_progress_set_text (proc_frame->progress, message);
}
void
plug_in_progress_set_value (PlugIn *plug_in,
gdouble percentage)
{
PlugInProcFrame *proc_frame;
g_return_if_fail (plug_in != NULL);
proc_frame = plug_in_get_proc_frame (plug_in);
if (! proc_frame->progress ||
! gimp_progress_is_active (proc_frame->progress) ||
! proc_frame->progress_cancel_id)
{
plug_in_progress_start (plug_in, NULL, NULL);
}
if (proc_frame->progress && gimp_progress_is_active (proc_frame->progress))
gimp_progress_set_value (proc_frame->progress, percentage);
}
void
plug_in_progress_pulse (PlugIn *plug_in)
{
PlugInProcFrame *proc_frame;
g_return_if_fail (plug_in != NULL);
proc_frame = plug_in_get_proc_frame (plug_in);
if (! proc_frame->progress ||
! gimp_progress_is_active (proc_frame->progress) ||
! proc_frame->progress_cancel_id)
{
plug_in_progress_start (plug_in, NULL, NULL);
}
if (proc_frame->progress && gimp_progress_is_active (proc_frame->progress))
gimp_progress_pulse (proc_frame->progress);
}
guint32
plug_in_progress_get_window (PlugIn *plug_in)
{
PlugInProcFrame *proc_frame;
g_return_val_if_fail (plug_in != NULL, 0);
proc_frame = plug_in_get_proc_frame (plug_in);
if (proc_frame->progress)
return gimp_progress_get_window (proc_frame->progress);
return 0;
}
gboolean
plug_in_progress_install (PlugIn *plug_in,
const gchar *progress_callback)
{
PlugInProcFrame *proc_frame;
ProcRecord *proc_rec;
g_return_val_if_fail (plug_in != NULL, FALSE);
g_return_val_if_fail (progress_callback != NULL, FALSE);
proc_rec = procedural_db_lookup (plug_in->gimp, progress_callback);
if (! proc_rec ||
proc_rec->num_args != 3 ||
proc_rec->args[0].type != GIMP_PDB_INT32 ||
proc_rec->args[1].type != GIMP_PDB_STRING ||
proc_rec->args[2].type != GIMP_PDB_FLOAT ||
proc_rec->proc_type != GIMP_TEMPORARY ||
proc_rec->exec_method.temporary.plug_in != plug_in)
{
return FALSE;
}
proc_frame = plug_in_get_proc_frame (plug_in);
if (proc_frame->progress)
{
plug_in_progress_end (plug_in);
if (proc_frame->progress)
{
g_object_unref (proc_frame->progress);
proc_frame->progress = NULL;
}
}
proc_frame->progress = g_object_new (GIMP_TYPE_PDB_PROGRESS,
"context", proc_frame->main_context,
"callback-name", progress_callback,
NULL);
return TRUE;
}
gboolean
plug_in_progress_uninstall (PlugIn *plug_in,
const gchar *progress_callback)
{
PlugInProcFrame *proc_frame;
g_return_val_if_fail (plug_in != NULL, FALSE);
g_return_val_if_fail (progress_callback != NULL, FALSE);
proc_frame = plug_in_get_proc_frame (plug_in);
if (GIMP_IS_PDB_PROGRESS (proc_frame->progress))
{
plug_in_progress_end (plug_in);
g_object_unref (proc_frame->progress);
proc_frame->progress = NULL;
return TRUE;
}
return FALSE;
}
gboolean
plug_in_progress_cancel (PlugIn *plug_in,
const gchar *progress_callback)
{
g_return_val_if_fail (plug_in != NULL, FALSE);
g_return_val_if_fail (progress_callback != NULL, FALSE);
return FALSE;
}
void
plug_in_progress_message (PlugIn *plug_in,
const gchar *message)
{
PlugInProcFrame *proc_frame;
gchar *domain;
g_return_if_fail (plug_in != NULL);
g_return_if_fail (message != NULL);
proc_frame = plug_in_get_proc_frame (plug_in);
domain = plug_in_get_undo_desc (plug_in);
if (proc_frame->progress)
{
gimp_progress_message (proc_frame->progress,
plug_in->gimp, domain, message);
}
else
{
gimp_message (plug_in->gimp, domain, message);
}
g_free (domain);
}
/* private functions */
static void
plug_in_progress_cancel_callback (GimpProgress *progress,
PlugIn *plug_in)
{
PlugInProcFrame *proc_frame = &plug_in->main_proc_frame;
GList *list;
if (proc_frame->main_loop)
{
proc_frame->return_vals = gimp_procedure_get_return_values (NULL,
FALSE);
proc_frame->n_return_vals = 1;
g_value_set_enum (&proc_frame->return_vals->value, GIMP_PDB_CANCEL);
}
for (list = plug_in->temp_proc_frames; list; list = g_list_next (list))
{
proc_frame = list->data;
if (proc_frame->main_loop)
{
proc_frame->return_vals = gimp_procedure_get_return_values (NULL,
FALSE);
proc_frame->n_return_vals = 1;
g_value_set_enum (&proc_frame->return_vals->value, GIMP_PDB_CANCEL);
}
}
plug_in_close (plug_in, TRUE);
plug_in_unref (plug_in);
}
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