307 lines
8.4 KiB
C
307 lines
8.4 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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* pikabrushcache.c
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* Copyright (C) 2011 Michael Natterer <mitch@gimp.org>
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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 <gio/gio.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 "pikabrushcache.h"
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#include "pika-log.h"
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#include "pika-intl.h"
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#define MAX_CACHED_DATA 20
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enum
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{
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PROP_0,
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PROP_DATA_DESTROY
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};
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typedef struct _PikaBrushCacheUnit PikaBrushCacheUnit;
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struct _PikaBrushCacheUnit
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{
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gpointer data;
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gint width;
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gint height;
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gdouble scale;
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gdouble aspect_ratio;
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gdouble angle;
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gboolean reflect;
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gdouble hardness;
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};
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static void pika_brush_cache_constructed (GObject *object);
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static void pika_brush_cache_finalize (GObject *object);
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static void pika_brush_cache_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_brush_cache_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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G_DEFINE_TYPE (PikaBrushCache, pika_brush_cache, PIKA_TYPE_OBJECT)
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#define parent_class pika_brush_cache_parent_class
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static void
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pika_brush_cache_class_init (PikaBrushCacheClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->constructed = pika_brush_cache_constructed;
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object_class->finalize = pika_brush_cache_finalize;
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object_class->set_property = pika_brush_cache_set_property;
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object_class->get_property = pika_brush_cache_get_property;
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g_object_class_install_property (object_class, PROP_DATA_DESTROY,
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g_param_spec_pointer ("data-destroy",
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NULL, NULL,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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}
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static void
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pika_brush_cache_init (PikaBrushCache *brush)
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{
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}
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static void
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pika_brush_cache_constructed (GObject *object)
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{
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PikaBrushCache *cache = PIKA_BRUSH_CACHE (object);
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G_OBJECT_CLASS (parent_class)->constructed (object);
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pika_assert (cache->data_destroy != NULL);
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}
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static void
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pika_brush_cache_finalize (GObject *object)
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{
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PikaBrushCache *cache = PIKA_BRUSH_CACHE (object);
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pika_brush_cache_clear (cache);
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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_brush_cache_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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PikaBrushCache *cache = PIKA_BRUSH_CACHE (object);
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switch (property_id)
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{
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case PROP_DATA_DESTROY:
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cache->data_destroy = g_value_get_pointer (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_brush_cache_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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PikaBrushCache *cache = PIKA_BRUSH_CACHE (object);
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switch (property_id)
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{
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case PROP_DATA_DESTROY:
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g_value_set_pointer (value, cache->data_destroy);
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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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/* public functions */
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PikaBrushCache *
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pika_brush_cache_new (GDestroyNotify data_destroy,
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gchar debug_hit,
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gchar debug_miss)
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{
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PikaBrushCache *cache;
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g_return_val_if_fail (data_destroy != NULL, NULL);
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cache = g_object_new (PIKA_TYPE_BRUSH_CACHE,
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"data-destroy", data_destroy,
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NULL);
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cache->debug_hit = debug_hit;
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cache->debug_miss = debug_miss;
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return cache;
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}
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void
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pika_brush_cache_clear (PikaBrushCache *cache)
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{
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g_return_if_fail (PIKA_IS_BRUSH_CACHE (cache));
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if (cache->cached_units)
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{
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GList *iter;
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for (iter = cache->cached_units; iter; iter = g_list_next (iter))
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{
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PikaBrushCacheUnit *unit = iter->data;
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cache->data_destroy (unit->data);
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}
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g_list_free_full (cache->cached_units, g_free);
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cache->cached_units = NULL;
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}
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}
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gconstpointer
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pika_brush_cache_get (PikaBrushCache *cache,
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gint width,
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gint height,
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gdouble scale,
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gdouble aspect_ratio,
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gdouble angle,
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gboolean reflect,
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gdouble hardness)
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{
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GList *iter;
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g_return_val_if_fail (PIKA_IS_BRUSH_CACHE (cache), NULL);
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for (iter = cache->cached_units; iter; iter = g_list_next (iter))
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{
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PikaBrushCacheUnit *unit = iter->data;
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if (unit->data &&
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unit->width == width &&
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unit->height == height &&
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unit->scale == scale &&
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unit->aspect_ratio == aspect_ratio &&
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unit->angle == angle &&
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unit->reflect == reflect &&
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unit->hardness == hardness)
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{
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if (pika_log_flags & PIKA_LOG_BRUSH_CACHE)
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g_printerr ("%c", cache->debug_hit);
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/* Make the returned cached brush first in the list. */
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cache->cached_units = g_list_remove_link (cache->cached_units, iter);
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iter->next = cache->cached_units;
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if (cache->cached_units)
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cache->cached_units->prev = iter;
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cache->cached_units = iter;
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return (gconstpointer) unit->data;
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}
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}
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if (pika_log_flags & PIKA_LOG_BRUSH_CACHE)
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g_printerr ("%c", cache->debug_miss);
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return NULL;
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}
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void
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pika_brush_cache_add (PikaBrushCache *cache,
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gpointer data,
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gint width,
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gint height,
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gdouble scale,
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gdouble aspect_ratio,
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gdouble angle,
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gboolean reflect,
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gdouble hardness)
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{
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GList *iter;
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PikaBrushCacheUnit *unit;
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GList *last = NULL;
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gint length = 0;
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g_return_if_fail (PIKA_IS_BRUSH_CACHE (cache));
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g_return_if_fail (data != NULL);
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for (iter = cache->cached_units; iter; iter = g_list_next (iter))
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{
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unit = iter->data;
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if (data == unit->data)
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return;
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length++;
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last = iter;
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}
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if (length > MAX_CACHED_DATA)
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{
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unit = last->data;
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cache->data_destroy (unit->data);
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cache->cached_units = g_list_delete_link (cache->cached_units, last);
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g_free (unit);
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}
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unit = g_new0 (PikaBrushCacheUnit, 1);
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unit->data = data;
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unit->width = width;
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unit->height = height;
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unit->scale = scale;
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unit->aspect_ratio = aspect_ratio;
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unit->angle = angle;
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unit->reflect = reflect;
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unit->hardness = hardness;
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cache->cached_units = g_list_prepend (cache->cached_units, unit);
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}
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