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gimp/libgimpwidgets/gimpcolordisplaystack.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpcolordisplaystack.c
* Copyright (C) 2003 Michael Natterer <mitch@gimp.org>
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "gimpwidgetstypes.h"
#include "gimpcolordisplay.h"
#include "gimpcolordisplaystack.h"
#include "gimpwidgetsmarshal.h"
/**
* SECTION: gimpcolordisplaystack
* @title: GimpColorDisplayStack
* @short_description: A stack of color correction modules.
* @see_also: #GimpColorDisplay
*
* A stack of color correction modules.
**/
enum
{
CHANGED,
ADDED,
REMOVED,
REORDERED,
LAST_SIGNAL
};
static void gimp_color_display_stack_dispose (GObject *object);
static void gimp_color_display_stack_display_changed (GimpColorDisplay *display,
GimpColorDisplayStack *stack);
static void gimp_color_display_stack_display_enabled (GimpColorDisplay *display,
GParamSpec *pspec,
GimpColorDisplayStack *stack);
static void gimp_color_display_stack_disconnect (GimpColorDisplayStack *stack,
GimpColorDisplay *display);
G_DEFINE_TYPE (GimpColorDisplayStack, gimp_color_display_stack, G_TYPE_OBJECT)
#define parent_class gimp_color_display_stack_parent_class
static guint stack_signals[LAST_SIGNAL] = { 0 };
static void
gimp_color_display_stack_class_init (GimpColorDisplayStackClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
stack_signals[CHANGED] =
g_signal_new ("changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpColorDisplayStackClass, changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
stack_signals[ADDED] =
g_signal_new ("added",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpColorDisplayStackClass, added),
NULL, NULL,
_gimp_widgets_marshal_VOID__OBJECT_INT,
G_TYPE_NONE, 2,
GIMP_TYPE_COLOR_DISPLAY,
G_TYPE_INT);
stack_signals[REMOVED] =
g_signal_new ("removed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpColorDisplayStackClass, removed),
NULL, NULL,
_gimp_widgets_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
GIMP_TYPE_COLOR_DISPLAY);
stack_signals[REORDERED] =
g_signal_new ("reordered",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpColorDisplayStackClass, reordered),
NULL, NULL,
_gimp_widgets_marshal_VOID__OBJECT_INT,
G_TYPE_NONE, 2,
GIMP_TYPE_COLOR_DISPLAY,
G_TYPE_INT);
object_class->dispose = gimp_color_display_stack_dispose;
klass->changed = NULL;
klass->added = NULL;
klass->removed = NULL;
klass->reordered = NULL;
}
static void
gimp_color_display_stack_init (GimpColorDisplayStack *stack)
{
stack->filters = NULL;
}
static void
gimp_color_display_stack_dispose (GObject *object)
{
GimpColorDisplayStack *stack = GIMP_COLOR_DISPLAY_STACK (object);
if (stack->filters)
{
GList *list;
for (list = stack->filters; list; list = g_list_next (list))
{
GimpColorDisplay *display = list->data;
gimp_color_display_stack_disconnect (stack, display);
g_object_unref (display);
}
g_list_free (stack->filters);
stack->filters = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
GimpColorDisplayStack *
gimp_color_display_stack_new (void)
{
return g_object_new (GIMP_TYPE_COLOR_DISPLAY_STACK, NULL);
}
GimpColorDisplayStack *
gimp_color_display_stack_clone (GimpColorDisplayStack *stack)
{
GimpColorDisplayStack *clone;
GList *list;
g_return_val_if_fail (GIMP_IS_COLOR_DISPLAY_STACK (stack), NULL);
clone = g_object_new (GIMP_TYPE_COLOR_DISPLAY_STACK, NULL);
for (list = stack->filters; list; list = g_list_next (list))
{
GimpColorDisplay *display;
display = gimp_color_display_clone (list->data);
gimp_color_display_stack_add (clone, display);
g_object_unref (display);
}
return clone;
}
void
gimp_color_display_stack_changed (GimpColorDisplayStack *stack)
{
g_return_if_fail (GIMP_IS_COLOR_DISPLAY_STACK (stack));
g_signal_emit (stack, stack_signals[CHANGED], 0);
}
void
gimp_color_display_stack_add (GimpColorDisplayStack *stack,
GimpColorDisplay *display)
{
g_return_if_fail (GIMP_IS_COLOR_DISPLAY_STACK (stack));
g_return_if_fail (GIMP_IS_COLOR_DISPLAY (display));
g_return_if_fail (g_list_find (stack->filters, display) == NULL);
stack->filters = g_list_append (stack->filters, g_object_ref (display));
g_signal_connect (display, "changed",
G_CALLBACK (gimp_color_display_stack_display_changed),
G_OBJECT (stack));
g_signal_connect (display, "notify::enabled",
G_CALLBACK (gimp_color_display_stack_display_enabled),
G_OBJECT (stack));
g_signal_emit (stack, stack_signals[ADDED], 0,
display, g_list_length (stack->filters) - 1);
gimp_color_display_stack_changed (stack);
}
void
gimp_color_display_stack_remove (GimpColorDisplayStack *stack,
GimpColorDisplay *display)
{
g_return_if_fail (GIMP_IS_COLOR_DISPLAY_STACK (stack));
g_return_if_fail (GIMP_IS_COLOR_DISPLAY (display));
g_return_if_fail (g_list_find (stack->filters, display) != NULL);
gimp_color_display_stack_disconnect (stack, display);
stack->filters = g_list_remove (stack->filters, display);
g_signal_emit (stack, stack_signals[REMOVED], 0, display);
gimp_color_display_stack_changed (stack);
g_object_unref (display);
}
void
gimp_color_display_stack_reorder_up (GimpColorDisplayStack *stack,
GimpColorDisplay *display)
{
GList *list;
g_return_if_fail (GIMP_IS_COLOR_DISPLAY_STACK (stack));
g_return_if_fail (GIMP_IS_COLOR_DISPLAY (display));
list = g_list_find (stack->filters, display);
g_return_if_fail (list != NULL);
if (list->prev)
{
list->data = list->prev->data;
list->prev->data = display;
g_signal_emit (stack, stack_signals[REORDERED], 0,
display, g_list_position (stack->filters, list->prev));
gimp_color_display_stack_changed (stack);
}
}
void
gimp_color_display_stack_reorder_down (GimpColorDisplayStack *stack,
GimpColorDisplay *display)
{
GList *list;
g_return_if_fail (GIMP_IS_COLOR_DISPLAY_STACK (stack));
g_return_if_fail (GIMP_IS_COLOR_DISPLAY (display));
list = g_list_find (stack->filters, display);
g_return_if_fail (list != NULL);
if (list->next)
{
list->data = list->next->data;
list->next->data = display;
g_signal_emit (stack, stack_signals[REORDERED], 0,
display, g_list_position (stack->filters, list->next));
gimp_color_display_stack_changed (stack);
}
}
void
gimp_color_display_stack_convert (GimpColorDisplayStack *stack,
guchar *buf,
gint width,
gint height,
gint bpp,
gint bpl)
{
GList *list;
g_return_if_fail (GIMP_IS_COLOR_DISPLAY_STACK (stack));
for (list = stack->filters; list; list = g_list_next (list))
{
GimpColorDisplay *display = list->data;
gimp_color_display_convert (display, buf, width, height, bpp, bpl);
}
}
/* private functions */
static void
gimp_color_display_stack_display_changed (GimpColorDisplay *display,
GimpColorDisplayStack *stack)
{
if (display->enabled)
gimp_color_display_stack_changed (stack);
}
static void
gimp_color_display_stack_display_enabled (GimpColorDisplay *display,
GParamSpec *pspec,
GimpColorDisplayStack *stack)
{
gimp_color_display_stack_changed (stack);
}
static void
gimp_color_display_stack_disconnect (GimpColorDisplayStack *stack,
GimpColorDisplay *display)
{
g_signal_handlers_disconnect_by_func (display,
gimp_color_display_stack_display_changed,
stack);
g_signal_handlers_disconnect_by_func (display,
gimp_color_display_stack_display_enabled,
stack);
}
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