mirror of https://github.com/GNOME/gimp.git
366 lines
11 KiB
C
366 lines
11 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimpcomponentlistitem.c
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* Copyright (C) 2001 Michael Natterer
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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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "libgimpwidgets/gimpwidgets.h"
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#include "widgets-types.h"
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#include "core/gimpimage.h"
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#include "core/gimpviewable.h"
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#include "gimpcomponentlistitem.h"
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#include "gimpdnd.h"
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#include "gimpimagepreview.h"
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#include "gimppreview.h"
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#include "gdisplay.h"
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#include "libgimp/gimpintl.h"
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static void gimp_component_list_item_class_init (GimpComponentListItemClass *klass);
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static void gimp_component_list_item_init (GimpComponentListItem *list_item);
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static void gimp_component_list_item_set_viewable (GimpListItem *list_item,
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GimpViewable *viewable);
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static void gimp_component_list_item_eye_toggled (GtkWidget *widget,
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gpointer data);
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static void gimp_component_list_item_visibility_changed (GimpImage *gimage,
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ChannelType channel,
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gpointer data);
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static void gimp_component_list_item_active_changed (GimpImage *gimage,
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ChannelType channel,
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gpointer data);
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static gchar * gimp_component_list_item_get_name (GtkWidget *widget);
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static GimpListItemClass *parent_class = NULL;
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GtkType
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gimp_component_list_item_get_type (void)
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{
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static GtkType list_item_type = 0;
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if (! list_item_type)
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{
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static const GtkTypeInfo list_item_info =
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{
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"GimpComponentListItem",
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sizeof (GimpComponentListItem),
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sizeof (GimpComponentListItemClass),
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(GtkClassInitFunc) gimp_component_list_item_class_init,
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(GtkObjectInitFunc) gimp_component_list_item_init,
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/* reserved_1 */ NULL,
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/* reserved_2 */ NULL,
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(GtkClassInitFunc) NULL,
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};
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list_item_type = gtk_type_unique (GIMP_TYPE_LIST_ITEM, &list_item_info);
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}
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return list_item_type;
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}
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static void
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gimp_component_list_item_class_init (GimpComponentListItemClass *klass)
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{
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GtkWidgetClass *widget_class;
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GtkItemClass *item_class;
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GimpListItemClass *list_item_class;
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widget_class = (GtkWidgetClass *) klass;
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item_class = (GtkItemClass *) klass;
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list_item_class = (GimpListItemClass *) klass;
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parent_class = gtk_type_class (GIMP_TYPE_LIST_ITEM);
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list_item_class->set_viewable = gimp_component_list_item_set_viewable;
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}
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static void
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gimp_component_list_item_init (GimpComponentListItem *list_item)
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{
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GtkWidget *abox;
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GtkWidget *image;
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list_item->channel = 0;
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abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
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gtk_box_pack_start (GTK_BOX (GIMP_LIST_ITEM (list_item)->hbox), abox,
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FALSE, FALSE, 0);
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gtk_widget_show (abox);
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list_item->eye_button = gtk_toggle_button_new ();
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gtk_button_set_relief (GTK_BUTTON (list_item->eye_button), GTK_RELIEF_NONE);
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gtk_container_add (GTK_CONTAINER (abox), list_item->eye_button);
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gtk_widget_show (list_item->eye_button);
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g_signal_connect (G_OBJECT (list_item->eye_button), "realize",
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G_CALLBACK (gimp_list_item_button_realize),
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list_item);
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g_signal_connect (G_OBJECT (list_item->eye_button), "state_changed",
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G_CALLBACK (gimp_list_item_button_state_changed),
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list_item);
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image = gtk_image_new_from_stock (GIMP_STOCK_VISIBLE,
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GTK_ICON_SIZE_BUTTON);
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gtk_container_add (GTK_CONTAINER (list_item->eye_button), image);
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gtk_widget_show (image);
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}
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GtkWidget *
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gimp_component_list_item_new (GimpImage *gimage,
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gint preview_size,
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ChannelType channel)
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{
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GimpListItem *list_item;
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g_return_val_if_fail (gimage != NULL, NULL);
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g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
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g_return_val_if_fail (preview_size > 0 && preview_size <= 256, NULL);
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g_return_val_if_fail (channel >= RED_CHANNEL && channel <= ALPHA_CHANNEL,
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NULL);
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list_item = gtk_type_new (GIMP_TYPE_COMPONENT_LIST_ITEM);
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list_item->preview_size = preview_size;
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list_item->get_name_func = gimp_component_list_item_get_name;
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GIMP_COMPONENT_LIST_ITEM (list_item)->channel = channel;
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gimp_list_item_set_viewable (list_item, GIMP_VIEWABLE (gimage));
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GTK_PREVIEW (list_item->preview)->bpp = 1;
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GTK_PREVIEW (list_item->preview)->type = GTK_PREVIEW_GRAYSCALE;
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return GTK_WIDGET (list_item);
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}
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static void
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gimp_component_list_item_set_viewable (GimpListItem *list_item,
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GimpViewable *viewable)
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{
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GimpComponentListItem *component_item;
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GimpImage *gimage;
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gboolean visible;
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gboolean active;
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gint pixel;
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if (GIMP_LIST_ITEM_CLASS (parent_class)->set_viewable)
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GIMP_LIST_ITEM_CLASS (parent_class)->set_viewable (list_item, viewable);
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component_item = GIMP_COMPONENT_LIST_ITEM (list_item);
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gimage = GIMP_IMAGE (GIMP_PREVIEW (list_item->preview)->viewable);
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visible = gimp_image_get_component_visible (gimage,
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component_item->channel);
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active = gimp_image_get_component_active (gimage,
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component_item->channel);
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switch (component_item->channel)
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{
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case RED_CHANNEL: pixel = RED_PIX; break;
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case GREEN_CHANNEL: pixel = GREEN_PIX; break;
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case BLUE_CHANNEL: pixel = BLUE_PIX; break;
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case GRAY_CHANNEL: pixel = GRAY_PIX; break;
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case INDEXED_CHANNEL: pixel = INDEXED_PIX; break;
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case ALPHA_CHANNEL: pixel = ALPHA_PIX; break;
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default:
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pixel = 0;
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}
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GIMP_IMAGE_PREVIEW (list_item->preview)->channel = pixel;
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if (! visible)
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{
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GtkRequisition requisition;
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gtk_widget_size_request (component_item->eye_button, &requisition);
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gtk_widget_set_usize (component_item->eye_button,
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requisition.width,
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requisition.height);
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gtk_widget_hide (GTK_BIN (component_item->eye_button)->child);
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}
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (component_item->eye_button),
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visible);
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if (active)
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gtk_item_select (GTK_ITEM (list_item));
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g_signal_connect (G_OBJECT (component_item->eye_button), "toggled",
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G_CALLBACK (gimp_component_list_item_eye_toggled),
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list_item);
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g_signal_connect_object (G_OBJECT (viewable), "component_visibility_changed",
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G_CALLBACK (gimp_component_list_item_visibility_changed),
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G_OBJECT (list_item),
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0);
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g_signal_connect_object (G_OBJECT (viewable), "component_active_changed",
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G_CALLBACK (gimp_component_list_item_active_changed),
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G_OBJECT (list_item),
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0);
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}
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static void
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gimp_component_list_item_eye_toggled (GtkWidget *widget,
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gpointer data)
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{
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GimpComponentListItem *component_item;
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GimpListItem *list_item;
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GimpImage *gimage;
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gboolean visible;
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component_item = GIMP_COMPONENT_LIST_ITEM (data);
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list_item = GIMP_LIST_ITEM (data);
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gimage = GIMP_IMAGE (GIMP_PREVIEW (list_item->preview)->viewable);
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visible = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget));
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if (visible != gimp_image_get_component_visible (gimage,
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component_item->channel))
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{
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if (! visible)
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{
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gtk_widget_set_usize (GTK_WIDGET (widget),
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GTK_WIDGET (widget)->allocation.width,
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GTK_WIDGET (widget)->allocation.height);
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gtk_widget_hide (GTK_BIN (widget)->child);
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}
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else
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{
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gtk_widget_show (GTK_BIN (widget)->child);
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gtk_widget_set_usize (GTK_WIDGET (widget), -1, -1);
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}
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g_signal_handlers_block_by_func (G_OBJECT (gimage),
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gimp_component_list_item_visibility_changed,
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list_item);
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gimp_image_set_component_visible (gimage, component_item->channel,
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visible);
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g_signal_handlers_unblock_by_func (G_OBJECT (gimage),
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gimp_component_list_item_visibility_changed,
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list_item);
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gdisplays_update_area (gimage, 0, 0, gimage->width, gimage->height);
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gdisplays_flush ();
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}
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}
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static void
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gimp_component_list_item_visibility_changed (GimpImage *gimage,
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ChannelType channel,
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gpointer data)
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{
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GimpComponentListItem *component_item;
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GimpListItem *list_item;
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GtkToggleButton *toggle;
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gboolean visible;
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component_item = GIMP_COMPONENT_LIST_ITEM (data);
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if (channel != component_item->channel)
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return;
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list_item = GIMP_LIST_ITEM (data);
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toggle = GTK_TOGGLE_BUTTON (component_item->eye_button);
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visible = gimp_image_get_component_visible (gimage, component_item->channel);
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if (visible != toggle->active)
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{
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if (! visible)
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{
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gtk_widget_set_usize (GTK_WIDGET (toggle),
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GTK_WIDGET (toggle)->allocation.width,
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GTK_WIDGET (toggle)->allocation.height);
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gtk_widget_hide (GTK_BIN (toggle)->child);
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}
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else
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{
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gtk_widget_show (GTK_BIN (toggle)->child);
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gtk_widget_set_usize (GTK_WIDGET (toggle), -1, -1);
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}
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g_signal_handlers_block_by_func (G_OBJECT (toggle),
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gimp_component_list_item_eye_toggled,
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list_item);
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gtk_toggle_button_set_active (toggle, visible);
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g_signal_handlers_unblock_by_func (G_OBJECT (toggle),
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gimp_component_list_item_eye_toggled,
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list_item);
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}
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}
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static void
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gimp_component_list_item_active_changed (GimpImage *gimage,
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ChannelType channel,
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gpointer data)
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{
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GimpComponentListItem *component_item;
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gboolean active;
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component_item = GIMP_COMPONENT_LIST_ITEM (data);
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if (channel != component_item->channel)
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return;
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active = gimp_image_get_component_active (gimage, component_item->channel);
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if (active)
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gtk_item_select (GTK_ITEM (data));
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else
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gtk_item_deselect (GTK_ITEM (data));
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}
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static gchar *
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gimp_component_list_item_get_name (GtkWidget *widget)
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{
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GimpComponentListItem *component_item;
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component_item = GIMP_COMPONENT_LIST_ITEM (widget);
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switch (component_item->channel)
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{
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case RED_CHANNEL: return g_strdup (_("Red")); break;
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case GREEN_CHANNEL: return g_strdup (_("Green")); break;
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case BLUE_CHANNEL: return g_strdup (_("Blue")); break;
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case GRAY_CHANNEL: return g_strdup (_("Gray")); break;
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case INDEXED_CHANNEL: return g_strdup (_("Indexed")); break;
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case ALPHA_CHANNEL: return g_strdup (_("Alpha")); break;
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default: return g_strdup ("EEK"); break;
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}
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}
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