320 lines
8.3 KiB
C
320 lines
8.3 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pikafilter.c
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "libpikabase/pikabase.h"
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#include "core-types.h"
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#include "pika.h"
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#include "pika-memsize.h"
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#include "pikafilter.h"
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enum
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{
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ACTIVE_CHANGED,
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LAST_SIGNAL
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};
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enum
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{
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PROP_0,
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PROP_ACTIVE,
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PROP_IS_LAST_NODE
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};
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typedef struct _PikaFilterPrivate PikaFilterPrivate;
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struct _PikaFilterPrivate
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{
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GeglNode *node;
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guint active : 1;
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guint is_last_node : 1;
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PikaApplicator *applicator;
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};
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#define GET_PRIVATE(filter) ((PikaFilterPrivate *) pika_filter_get_instance_private ((PikaFilter *) (filter)))
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/* local function prototypes */
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static void pika_filter_finalize (GObject *object);
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static void pika_filter_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void pika_filter_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static gint64 pika_filter_get_memsize (PikaObject *object,
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gint64 *gui_size);
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static GeglNode * pika_filter_real_get_node (PikaFilter *filter);
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G_DEFINE_TYPE_WITH_PRIVATE (PikaFilter, pika_filter, PIKA_TYPE_VIEWABLE)
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#define parent_class pika_filter_parent_class
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static guint pika_filter_signals[LAST_SIGNAL] = { 0 };
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static void
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pika_filter_class_init (PikaFilterClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PikaObjectClass *pika_object_class = PIKA_OBJECT_CLASS (klass);
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pika_filter_signals[ACTIVE_CHANGED] =
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g_signal_new ("active-changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (PikaFilterClass, active_changed),
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NULL, NULL, NULL,
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G_TYPE_NONE, 0);
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object_class->finalize = pika_filter_finalize;
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object_class->set_property = pika_filter_set_property;
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object_class->get_property = pika_filter_get_property;
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pika_object_class->get_memsize = pika_filter_get_memsize;
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klass->active_changed = NULL;
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klass->get_node = pika_filter_real_get_node;
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g_object_class_install_property (object_class, PROP_ACTIVE,
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g_param_spec_boolean ("active", NULL, NULL,
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TRUE,
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PIKA_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_IS_LAST_NODE,
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g_param_spec_boolean ("is-last-node",
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NULL, NULL,
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FALSE,
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PIKA_PARAM_READWRITE));
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}
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static void
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pika_filter_init (PikaFilter *filter)
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{
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PikaFilterPrivate *private = GET_PRIVATE (filter);
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private->active = TRUE;
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}
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static void
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pika_filter_finalize (GObject *object)
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{
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PikaFilterPrivate *private = GET_PRIVATE (object);
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g_clear_object (&private->node);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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pika_filter_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PikaFilter *filter = PIKA_FILTER (object);
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switch (property_id)
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{
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case PROP_ACTIVE:
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pika_filter_set_active (filter, g_value_get_boolean (value));
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break;
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case PROP_IS_LAST_NODE:
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pika_filter_set_is_last_node (filter, g_value_get_boolean (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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pika_filter_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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PikaFilterPrivate *private = GET_PRIVATE (object);
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switch (property_id)
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{
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case PROP_ACTIVE:
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g_value_set_boolean (value, private->active);
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break;
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case PROP_IS_LAST_NODE:
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g_value_set_boolean (value, private->is_last_node);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static gint64
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pika_filter_get_memsize (PikaObject *object,
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gint64 *gui_size)
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{
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PikaFilterPrivate *private = GET_PRIVATE (object);
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gint64 memsize = 0;
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memsize += pika_g_object_get_memsize (G_OBJECT (private->node));
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return memsize + PIKA_OBJECT_CLASS (parent_class)->get_memsize (object,
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gui_size);
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}
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static GeglNode *
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pika_filter_real_get_node (PikaFilter *filter)
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{
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PikaFilterPrivate *private = GET_PRIVATE (filter);
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private->node = gegl_node_new ();
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return private->node;
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}
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/* public functions */
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PikaFilter *
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pika_filter_new (const gchar *name)
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{
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g_return_val_if_fail (name != NULL, NULL);
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return g_object_new (PIKA_TYPE_FILTER,
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"name", name,
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NULL);
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}
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GeglNode *
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pika_filter_get_node (PikaFilter *filter)
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{
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PikaFilterPrivate *private;
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g_return_val_if_fail (PIKA_IS_FILTER (filter), NULL);
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private = GET_PRIVATE (filter);
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if (private->node)
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return private->node;
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return PIKA_FILTER_GET_CLASS (filter)->get_node (filter);
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}
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GeglNode *
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pika_filter_peek_node (PikaFilter *filter)
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{
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g_return_val_if_fail (PIKA_IS_FILTER (filter), NULL);
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return GET_PRIVATE (filter)->node;
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}
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void
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pika_filter_set_active (PikaFilter *filter,
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gboolean active)
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{
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g_return_if_fail (PIKA_IS_FILTER (filter));
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active = active ? TRUE : FALSE;
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if (active != pika_filter_get_active (filter))
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{
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GET_PRIVATE (filter)->active = active;
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g_signal_emit (filter, pika_filter_signals[ACTIVE_CHANGED], 0);
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g_object_notify (G_OBJECT (filter), "active");
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}
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}
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gboolean
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pika_filter_get_active (PikaFilter *filter)
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{
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g_return_val_if_fail (PIKA_IS_FILTER (filter), FALSE);
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return GET_PRIVATE (filter)->active;
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}
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void
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pika_filter_set_is_last_node (PikaFilter *filter,
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gboolean is_last_node)
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{
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g_return_if_fail (PIKA_IS_FILTER (filter));
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is_last_node = is_last_node ? TRUE : FALSE;
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if (is_last_node != pika_filter_get_is_last_node (filter))
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{
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GET_PRIVATE (filter)->is_last_node = is_last_node;
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g_object_notify (G_OBJECT (filter), "is-last-node");
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}
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}
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gboolean
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pika_filter_get_is_last_node (PikaFilter *filter)
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{
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g_return_val_if_fail (PIKA_IS_FILTER (filter), FALSE);
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return GET_PRIVATE (filter)->is_last_node;
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}
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void
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pika_filter_set_applicator (PikaFilter *filter,
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PikaApplicator *applicator)
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{
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PikaFilterPrivate *private;
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g_return_if_fail (PIKA_IS_FILTER (filter));
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private = GET_PRIVATE (filter);
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private->applicator = applicator;
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}
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PikaApplicator *
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pika_filter_get_applicator (PikaFilter *filter)
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{
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g_return_val_if_fail (PIKA_IS_FILTER (filter), NULL);
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return GET_PRIVATE (filter)->applicator;
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}
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