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gimp/app/display/gimpdisplayshell-filter.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1999 Manish Singh
*
* 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 <gmodule.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "display-types.h"
#include "core/gimpimage.h"
#include "gimpdisplay.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-filter.h"
typedef struct _ColorDisplayInfo ColorDisplayInfo;
struct _ColorDisplayInfo
{
gchar *name;
GimpColorDisplayMethods methods;
GSList *refs;
};
static void color_display_foreach_real (gpointer key,
gpointer value,
gpointer user_data);
static void gimp_display_shell_filter_detach_real (GimpDisplayShell *shell,
ColorDisplayNode *node,
gboolean unref);
static gint node_name_compare (ColorDisplayNode *node,
const gchar *name);
static GHashTable *color_display_table = NULL;
void
color_display_init (void)
{
}
G_MODULE_EXPORT gboolean
gimp_color_display_register (const gchar *name,
GimpColorDisplayMethods *methods)
{
ColorDisplayInfo *info;
info = g_new (ColorDisplayInfo, 1);
info->name = g_strdup (name);
info->methods = *methods;
info->refs = NULL;
if (!color_display_table)
color_display_table = g_hash_table_new (g_str_hash, g_str_equal);
if (g_hash_table_lookup (color_display_table, name))
return FALSE;
if (!methods->convert)
return FALSE;
g_hash_table_insert (color_display_table, info->name, info);
return TRUE;
}
G_MODULE_EXPORT gboolean
gimp_color_display_unregister (const gchar *name)
{
ColorDisplayInfo *info;
GimpDisplayShell *shell;
GList *node;
if ((info = g_hash_table_lookup (color_display_table, name)))
{
GSList *refs;
for (refs = info->refs; refs; refs = g_slist_next (refs))
{
shell = GIMP_DISPLAY_SHELL (refs->data);
node = g_list_find_custom (shell->filters, (gpointer) name,
(GCompareFunc) node_name_compare);
shell->filters = g_list_remove_link (shell->filters, node);
gimp_display_shell_filter_detach_real (shell, node->data, FALSE);
g_list_free_1 (node);
}
g_slist_free (info->refs);
g_hash_table_remove (color_display_table, name);
g_free (info->name);
g_free (info);
}
return TRUE;
}
typedef struct _DisplayForeachData DisplayForeachData;
struct _DisplayForeachData
{
GimpCDFunc func;
gpointer user_data;
};
void
color_display_foreach (GimpCDFunc func,
gpointer user_data)
{
DisplayForeachData data;
data.func = func;
data.user_data = user_data;
g_hash_table_foreach (color_display_table, color_display_foreach_real, &data);
}
static void
color_display_foreach_real (gpointer key,
gpointer value,
gpointer user_data)
{
DisplayForeachData *data;
data = (DisplayForeachData *) user_data;
data->func (key, data->user_data);
}
ColorDisplayNode *
gimp_display_shell_filter_attach (GimpDisplayShell *shell,
const gchar *name)
{
ColorDisplayInfo *info;
ColorDisplayNode *node;
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
if ((info = g_hash_table_lookup (color_display_table, name)))
{
node = g_new (ColorDisplayNode, 1);
node->cd_name = g_strdup (name);
node->cd_ID = NULL;
if (!info->refs && info->methods.init)
info->methods.init ();
info->refs = g_slist_append (info->refs, shell);
if (info->methods.new)
node->cd_ID = info->methods.new (shell->gdisp->gimage->base_type);
node->cd_convert = info->methods.convert;
shell->filters = g_list_append (shell->filters, node);
return node;
}
else
g_warning ("Tried to attach a nonexistant color display");
return NULL;
}
ColorDisplayNode *
gimp_display_shell_filter_attach_clone (GimpDisplayShell *shell,
ColorDisplayNode *node)
{
ColorDisplayInfo *info;
ColorDisplayNode *clone;
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
g_return_val_if_fail (node != NULL, NULL);
if ((info = g_hash_table_lookup (color_display_table, node->cd_name)))
{
clone = g_new (ColorDisplayNode, 1);
clone->cd_name = g_strdup (node->cd_name);
clone->cd_ID = NULL;
info->refs = g_slist_append (info->refs, shell);
if (info->methods.clone)
node->cd_ID = info->methods.clone (node->cd_ID);
node->cd_convert = info->methods.convert;
shell->filters = g_list_append (shell->filters, node);
return node;
}
else
g_warning ("Tried to clone a nonexistant color display");
return NULL;
}
void
gimp_display_shell_filter_detach (GimpDisplayShell *shell,
ColorDisplayNode *node)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
shell->filters = g_list_remove (shell->filters, node);
}
void
gimp_display_shell_filter_detach_destroy (GimpDisplayShell *shell,
ColorDisplayNode *node)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
gimp_display_shell_filter_detach_real (shell, node, TRUE);
shell->filters = g_list_remove (shell->filters, node);
}
void
gimp_display_shell_filter_detach_all (GimpDisplayShell *shell)
{
GList *list;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
for (list = shell->filters; list; list = g_list_next (list))
{
gimp_display_shell_filter_detach_real (shell, list->data, TRUE);
}
g_list_free (shell->filters);
shell->filters = NULL;
}
static void
gimp_display_shell_filter_detach_real (GimpDisplayShell *shell,
ColorDisplayNode *node,
gboolean unref)
{
ColorDisplayInfo *info;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (node != NULL);
if ((info = g_hash_table_lookup (color_display_table, node->cd_name)))
{
if (info->methods.destroy)
info->methods.destroy (node->cd_ID);
if (unref)
info->refs = g_slist_remove (info->refs, shell);
if (!info->refs && info->methods.finalize)
info->methods.finalize ();
}
g_free (node->cd_name);
g_free (node);
}
void
gimp_display_shell_filter_reorder_up (GimpDisplayShell *shell,
ColorDisplayNode *node)
{
GList *node_list;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (node != NULL);
node_list = g_list_find (shell->filters, node);
if (node_list->prev)
{
node_list->data = node_list->prev->data;
node_list->prev->data = node;
}
}
void
gimp_display_shell_filter_reorder_down (GimpDisplayShell *shell,
ColorDisplayNode *node)
{
GList *node_list;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (node != NULL);
node_list = g_list_find (shell->filters, node);
if (node_list->next)
{
node_list->data = node_list->next->data;
node_list->next->data = node;
}
}
static gint
node_name_compare (ColorDisplayNode *node,
const char *name)
{
return strcmp (node->cd_name, name);
}
void
gimp_display_shell_filter_configure (ColorDisplayNode *node,
GFunc ok_func,
gpointer ok_data,
GFunc cancel_func,
gpointer cancel_data)
{
ColorDisplayInfo *info;
g_return_if_fail (node != NULL);
if ((info = g_hash_table_lookup (color_display_table, node->cd_name)))
{
if (info->methods.configure)
info->methods.configure (node->cd_ID,
ok_func, ok_data,
cancel_func, cancel_data);
}
else
g_warning ("Tried to configure a nonexistant color display");
return;
}
void
gimp_display_shell_filter_configure_cancel (ColorDisplayNode *node)
{
ColorDisplayInfo *info;
g_return_if_fail (node != NULL);
if ((info = g_hash_table_lookup (color_display_table, node->cd_name)))
{
if (info->methods.cancel)
info->methods.cancel (node->cd_ID);
}
else
g_warning ("Tried to configure cancel a nonexistant color display");
return;
}
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