gimp/app/display/gimpdisplayshell-filter.c

98 lines
2.7 KiB
C

/* 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 <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "display-types.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-filter.h"
/* local function prototypes */
static void gimp_display_shell_filter_changed (GimpColorDisplayStack *stack,
GimpDisplayShell *shell);
/* public functions */
void
gimp_display_shell_filter_set (GimpDisplayShell *shell,
GimpColorDisplayStack *stack)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (stack == NULL || GIMP_IS_COLOR_DISPLAY_STACK (stack));
if (stack == shell->filter_stack)
return;
if (shell->filter_stack)
{
g_signal_handlers_disconnect_by_func (shell->filter_stack,
gimp_display_shell_filter_changed,
shell);
g_object_unref (shell->filter_stack);
}
shell->filter_stack = stack;
if (shell->filter_stack)
{
g_object_ref (shell->filter_stack);
g_signal_connect (shell->filter_stack, "changed",
G_CALLBACK (gimp_display_shell_filter_changed),
shell);
}
gimp_display_shell_filter_changed (NULL, shell);
}
/* private functions */
static gboolean
gimp_display_shell_filter_changed_idle (gpointer data)
{
GimpDisplayShell *shell = data;
gimp_display_shell_expose_full (shell);
shell->filter_idle_id = 0;
return FALSE;
}
static void
gimp_display_shell_filter_changed (GimpColorDisplayStack *stack,
GimpDisplayShell *shell)
{
if (shell->filter_idle_id)
g_source_remove (shell->filter_idle_id);
shell->filter_idle_id =
g_idle_add_full (G_PRIORITY_LOW,
gimp_display_shell_filter_changed_idle,
shell, NULL);
}