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gimp/app/widgets/gimpchannellistview.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpchannellistview.c
* Copyright (C) 2001 Michael Natterer
*
* 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 "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimpchannel.h"
#include "core/gimpcontainer.h"
#include "core/gimpimage.h"
#include "core/gimpimage-mask.h"
#include "core/gimpmarshal.h"
#include "gimpchannellistview.h"
#include "gimpcomponentlistitem.h"
#include "gimpdnd.h"
#include "gimpimagepreview.h"
#include "gimplistitem.h"
#include "gdisplay.h"
#include "libgimp/gimpintl.h"
static void gimp_channel_list_view_class_init (GimpChannelListViewClass *klass);
static void gimp_channel_list_view_init (GimpChannelListView *view);
static void gimp_channel_list_view_destroy (GtkObject *object);
static void gimp_channel_list_view_set_image (GimpDrawableListView *view,
GimpImage *gimage);
static void gimp_channel_list_view_select_item (GimpContainerView *view,
GimpViewable *item,
gpointer insert_data);
static void gimp_channel_list_view_set_preview_size (GimpContainerView *view);
static void gimp_channel_list_view_to_selection (GimpChannelListView *view,
GimpChannel *channel,
ChannelOps operation);
static void gimp_channel_list_view_toselection_clicked
(GtkWidget *widget,
GimpChannelListView *view);
static void gimp_channel_list_view_toselection_extended_clicked
(GtkWidget *widget,
guint state,
GimpChannelListView *view);
static void gimp_channel_list_view_create_components
(GimpChannelListView *view);
static void gimp_channel_list_view_clear_components
(GimpChannelListView *view);
static void gimp_channel_list_view_mode_changed (GimpImage *gimage,
GimpChannelListView *view);
static void gimp_channel_list_view_component_toggle
(GtkList *list,
GtkWidget *child,
GimpChannelListView *view);
static GimpDrawableListViewClass *parent_class = NULL;
GtkType
gimp_channel_list_view_get_type (void)
{
static guint view_type = 0;
if (! view_type)
{
GtkTypeInfo view_info =
{
"GimpChannelListView",
sizeof (GimpChannelListView),
sizeof (GimpChannelListViewClass),
(GtkClassInitFunc) gimp_channel_list_view_class_init,
(GtkObjectInitFunc) gimp_channel_list_view_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
view_type = gtk_type_unique (GIMP_TYPE_DRAWABLE_LIST_VIEW, &view_info);
}
return view_type;
}
static void
gimp_channel_list_view_class_init (GimpChannelListViewClass *klass)
{
GtkObjectClass *object_class;
GimpContainerViewClass *container_view_class;
GimpDrawableListViewClass *drawable_view_class;
object_class = (GtkObjectClass *) klass;
container_view_class = (GimpContainerViewClass *) klass;
drawable_view_class = (GimpDrawableListViewClass *) klass;
parent_class = g_type_class_peek_parent (klass);
object_class->destroy = gimp_channel_list_view_destroy;
container_view_class->select_item = gimp_channel_list_view_select_item;
container_view_class->set_preview_size = gimp_channel_list_view_set_preview_size;
drawable_view_class->set_image = gimp_channel_list_view_set_image;
}
static void
gimp_channel_list_view_init (GimpChannelListView *view)
{
GimpDrawableListView *drawable_view;
GimpContainerView *container_view;
drawable_view = GIMP_DRAWABLE_LIST_VIEW (view);
container_view = GIMP_CONTAINER_VIEW (view);
/* component frame */
view->component_frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (view->component_frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (view), view->component_frame, FALSE, FALSE, 0);
gtk_box_reorder_child (GTK_BOX (view), view->component_frame, 0);
/* don't show */
view->component_list = gtk_list_new ();
gtk_list_set_selection_mode (GTK_LIST (view->component_list),
GTK_SELECTION_MULTIPLE);
gtk_container_add (GTK_CONTAINER (view->component_frame),
view->component_list);
gtk_widget_show (view->component_list);
g_signal_connect (G_OBJECT (view->component_list), "select_child",
G_CALLBACK (gimp_channel_list_view_component_toggle),
view);
g_signal_connect (G_OBJECT (view->component_list), "unselect_child",
G_CALLBACK (gimp_channel_list_view_component_toggle),
view);
/* To Selection button */
view->toselection_button =
gimp_container_view_add_button (container_view,
GIMP_STOCK_TO_SELECTION,
_("Channel to Selection\n"
"<Shift> Add\n"
"<Ctrl> Subtract\n"
"<Shift><Ctrl> Intersect"), NULL,
G_CALLBACK (gimp_channel_list_view_toselection_clicked),
G_CALLBACK (gimp_channel_list_view_toselection_extended_clicked),
view);
gimp_container_view_enable_dnd (container_view,
GTK_BUTTON (view->toselection_button),
GIMP_TYPE_CHANNEL);
gtk_widget_set_sensitive (view->toselection_button, FALSE);
}
static void
gimp_channel_list_view_destroy (GtkObject *object)
{
GimpChannelListView *view;
view = GIMP_CHANNEL_LIST_VIEW (object);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
/* GimpChannelListView methods */
static void
gimp_channel_list_view_set_image (GimpDrawableListView *view,
GimpImage *gimage)
{
GimpChannelListView *channel_view;
channel_view = GIMP_CHANNEL_LIST_VIEW (view);
if (view->gimage)
{
if (! gimage)
gtk_widget_hide (channel_view->component_frame);
gimp_channel_list_view_clear_components (channel_view);
g_signal_handlers_disconnect_by_func (G_OBJECT (view->gimage),
gimp_channel_list_view_mode_changed,
channel_view);
}
if (GIMP_DRAWABLE_LIST_VIEW_CLASS (parent_class)->set_image)
GIMP_DRAWABLE_LIST_VIEW_CLASS (parent_class)->set_image (view, gimage);
if (view->gimage)
{
if (! GTK_WIDGET_VISIBLE (channel_view->component_frame))
gtk_widget_show (channel_view->component_frame);
gimp_channel_list_view_create_components (channel_view);
g_signal_connect (G_OBJECT (view->gimage), "mode_changed",
G_CALLBACK (gimp_channel_list_view_mode_changed),
channel_view);
}
}
/* GimpContainerView methods */
static void
gimp_channel_list_view_select_item (GimpContainerView *view,
GimpViewable *item,
gpointer insert_data)
{
GimpDrawableListView *drawable_view;
GimpChannelListView *list_view;
drawable_view = GIMP_DRAWABLE_LIST_VIEW (view);
list_view = GIMP_CHANNEL_LIST_VIEW (view);
if (GIMP_CONTAINER_VIEW_CLASS (parent_class)->select_item)
GIMP_CONTAINER_VIEW_CLASS (parent_class)->select_item (view,
item,
insert_data);
if (drawable_view->gimage)
{
gboolean floating_sel;
floating_sel = (gimp_image_floating_sel (drawable_view->gimage) != NULL);
gtk_widget_set_sensitive (view->button_box, !floating_sel);
}
gtk_widget_set_sensitive (list_view->toselection_button, item != NULL);
}
static void
gimp_channel_list_view_set_preview_size (GimpContainerView *view)
{
GimpChannelListView *channel_view;
GList *list;
if (GIMP_CONTAINER_VIEW_CLASS (parent_class)->set_preview_size)
GIMP_CONTAINER_VIEW_CLASS (parent_class)->set_preview_size (view);
channel_view = GIMP_CHANNEL_LIST_VIEW (view);
for (list = GTK_LIST (channel_view->component_list)->children;
list;
list = g_list_next (list))
{
gimp_list_item_set_preview_size (GIMP_LIST_ITEM (list->data),
view->preview_size);
}
gtk_widget_queue_resize (channel_view->component_frame);
}
/* "To Selection" functions */
static void
gimp_channel_list_view_to_selection (GimpChannelListView *view,
GimpChannel *channel,
ChannelOps operation)
{
if (channel)
{
GimpImage *gimage;
GimpChannel *new_channel;
gimage = gimp_drawable_gimage (GIMP_DRAWABLE (channel));
if (operation == CHANNEL_OP_REPLACE)
{
new_channel = channel;
g_object_ref (G_OBJECT (channel));
}
else
{
new_channel = gimp_channel_copy (gimp_image_get_mask (gimage), TRUE);
gimp_channel_combine_mask (new_channel,
channel,
operation,
0, 0);
}
gimage_mask_load (gimage, new_channel);
g_object_unref (G_OBJECT (new_channel));
gdisplays_flush ();
}
}
static void
gimp_channel_list_view_toselection_clicked (GtkWidget *widget,
GimpChannelListView *view)
{
GimpDrawableListView *drawable_view;
GimpDrawable *drawable;
drawable_view = GIMP_DRAWABLE_LIST_VIEW (view);
drawable = drawable_view->get_drawable_func (drawable_view->gimage);
if (drawable)
gimp_channel_list_view_to_selection (view, GIMP_CHANNEL (drawable),
CHANNEL_OP_REPLACE);
}
static void
gimp_channel_list_view_toselection_extended_clicked (GtkWidget *widget,
guint state,
GimpChannelListView *view)
{
GimpDrawableListView *drawable_view;
GimpDrawable *drawable;
drawable_view = GIMP_DRAWABLE_LIST_VIEW (view);
drawable = drawable_view->get_drawable_func (drawable_view->gimage);
if (drawable)
{
ChannelOps operation = CHANNEL_OP_REPLACE;
if (state & GDK_SHIFT_MASK)
{
if (state & GDK_CONTROL_MASK)
operation = CHANNEL_OP_INTERSECT;
else
operation = CHANNEL_OP_ADD;
}
else if (state & GDK_CONTROL_MASK)
{
operation = CHANNEL_OP_SUB;
}
gimp_channel_list_view_to_selection (view, GIMP_CHANNEL (drawable),
operation);
}
}
static void
gimp_channel_list_view_create_components (GimpChannelListView *view)
{
GimpImage *gimage;
GtkWidget *list_item;
gint n_components = 0;
ChannelType components[MAX_CHANNELS];
GList *list = NULL;
gint i;
gimage = GIMP_DRAWABLE_LIST_VIEW (view)->gimage;
switch (gimp_image_base_type (gimage))
{
case RGB:
n_components = 3;
components[0] = RED_CHANNEL;
components[1] = GREEN_CHANNEL;
components[2] = BLUE_CHANNEL;
break;
case GRAY:
n_components = 1;
components[0] = GRAY_CHANNEL;
break;
case INDEXED:
n_components = 1;
components[0] = INDEXED_CHANNEL;
break;
}
components[n_components++] = ALPHA_CHANNEL;
for (i = 0; i < n_components; i++)
{
list_item =
gimp_component_list_item_new (gimage,
GIMP_CONTAINER_VIEW (view)->preview_size,
components[i]);
gtk_widget_show (list_item);
list = g_list_append (list, list_item);
}
gtk_list_insert_items (GTK_LIST (view->component_list), list, 0);
gtk_widget_queue_resize (GTK_WIDGET (view->component_frame));
}
static void
gimp_channel_list_view_clear_components (GimpChannelListView *view)
{
g_signal_handlers_block_by_func (G_OBJECT (view->component_list),
gimp_channel_list_view_component_toggle,
view);
gtk_list_clear_items (GTK_LIST (view->component_list), 0, -1);
g_signal_handlers_unblock_by_func (G_OBJECT (view->component_list),
gimp_channel_list_view_component_toggle,
view);
}
static void
gimp_channel_list_view_mode_changed (GimpImage *gimage,
GimpChannelListView *view)
{
gimp_channel_list_view_clear_components (view);
gimp_channel_list_view_create_components (view);
}
static void
gimp_channel_list_view_component_toggle (GtkList *list,
GtkWidget *child,
GimpChannelListView *view)
{
GimpComponentListItem *component_item;
component_item = GIMP_COMPONENT_LIST_ITEM (child);
g_signal_handlers_block_by_func (G_OBJECT (view->component_list),
gimp_channel_list_view_component_toggle,
view);
gimp_image_set_component_active (GIMP_DRAWABLE_LIST_VIEW (view)->gimage,
component_item->channel,
child->state == GTK_STATE_SELECTED);
g_signal_handlers_unblock_by_func (G_OBJECT (view->component_list),
gimp_channel_list_view_component_toggle,
view);
}
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