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gimp/app/widgets/gimplayerlistview.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimplayerlistview.c
* Copyright (C) 2001 Michael Natterer <mitch@gimp.org>
*
* 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/gimpcontainer.h"
#include "core/gimplayer.h"
#include "core/gimplayer-floating-sel.h"
#include "core/gimpimage.h"
#include "gimpdnd.h"
#include "gimplayerlistview.h"
#include "gimplistitem.h"
#include "gimpwidgets-constructors.h"
#include "libgimp/gimpintl.h"
static void gimp_layer_list_view_class_init (GimpLayerListViewClass *klass);
static void gimp_layer_list_view_init (GimpLayerListView *view);
static void gimp_layer_list_view_style_set (GtkWidget *widget,
GtkStyle *prev_style);
static void gimp_layer_list_view_set_container (GimpContainerView *view,
GimpContainer *container);
static void gimp_layer_list_view_select_item (GimpContainerView *view,
GimpViewable *item,
gpointer insert_data);
static void gimp_layer_list_view_anchor_clicked (GtkWidget *widget,
GimpLayerListView *view);
static void gimp_layer_list_view_paint_mode_menu_callback
(GtkWidget *widget,
GimpLayerListView *view);
static void gimp_layer_list_view_preserve_button_toggled
(GtkWidget *widget,
GimpLayerListView *view);
static void gimp_layer_list_view_opacity_scale_changed
(GtkAdjustment *adjustment,
GimpLayerListView *view);
static void gimp_layer_list_view_layer_signal_handler
(GimpLayer *layer,
GimpLayerListView *view);
static void gimp_layer_list_view_update_options (GimpLayerListView *view,
GimpLayer *layer);
static void gimp_layer_list_view_remove_layer (GimpImage *gimage,
GimpItem *layer);
static GimpDrawableListViewClass *parent_class = NULL;
GType
gimp_layer_list_view_get_type (void)
{
static GType view_type = 0;
if (! view_type)
{
static const GTypeInfo view_info =
{
sizeof (GimpLayerListViewClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gimp_layer_list_view_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpLayerListView),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_layer_list_view_init,
};
view_type = g_type_register_static (GIMP_TYPE_DRAWABLE_LIST_VIEW,
"GimpLayerListView",
&view_info, 0);
}
return view_type;
}
static void
gimp_layer_list_view_class_init (GimpLayerListViewClass *klass)
{
GtkWidgetClass *widget_class;
GimpContainerViewClass *container_view_class;
GimpItemListViewClass *item_view_class;
widget_class = GTK_WIDGET_CLASS (klass);
container_view_class = GIMP_CONTAINER_VIEW_CLASS (klass);
item_view_class = GIMP_ITEM_LIST_VIEW_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
widget_class->style_set = gimp_layer_list_view_style_set;
container_view_class->set_container = gimp_layer_list_view_set_container;
container_view_class->select_item = gimp_layer_list_view_select_item;
item_view_class->get_container = gimp_image_get_layers;
item_view_class->get_active_item = (GimpGetItemFunc) gimp_image_get_active_layer;
item_view_class->set_active_item = (GimpSetItemFunc) gimp_image_set_active_layer;
item_view_class->reorder_item = (GimpReorderItemFunc) gimp_image_position_layer;
item_view_class->add_item = (GimpAddItemFunc) gimp_image_add_layer;
item_view_class->remove_item = gimp_layer_list_view_remove_layer;
item_view_class->convert_item = (GimpConvertItemFunc) gimp_layer_new_from_drawable;
item_view_class->new_desc = _("New Layer");
item_view_class->duplicate_desc = _("Duplicate Layer");
item_view_class->edit_desc = _("Edit Layer Attributes");
item_view_class->delete_desc = _("Delete Layer");
item_view_class->raise_desc = _("Raise Layer");
item_view_class->raise_to_top_desc = _("Raise Layer to Top");
item_view_class->lower_desc = _("Lower Layer");
item_view_class->lower_to_bottom_desc = _("Lower Layer to Bottom");
}
static void
gimp_layer_list_view_init (GimpLayerListView *view)
{
GimpDrawableListView *drawable_view;
GtkWidget *abox;
GtkWidget *hbox;
drawable_view = GIMP_DRAWABLE_LIST_VIEW (view);
view->options_box = gtk_table_new (2, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (view->options_box), 2);
gtk_box_pack_start (GTK_BOX (view), view->options_box, FALSE, FALSE, 0);
gtk_box_reorder_child (GTK_BOX (view), view->options_box, 0);
gtk_widget_show (view->options_box);
hbox = gtk_hbox_new (FALSE, 2);
/* Paint mode menu */
view->paint_mode_menu =
gimp_paint_mode_menu_new (G_CALLBACK (gimp_layer_list_view_paint_mode_menu_callback),
view,
FALSE,
GIMP_NORMAL_MODE);
gtk_box_pack_start (GTK_BOX (hbox), view->paint_mode_menu, FALSE, FALSE, 0);
gtk_widget_show (view->paint_mode_menu);
gimp_help_set_help_data (view->paint_mode_menu,
NULL, "#paint_mode_menu");
/* Preserve transparency toggle */
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (hbox), abox, FALSE, FALSE, 0);
gtk_widget_show (abox);
view->preserve_trans_toggle =
gtk_toggle_button_new_with_label (_("Keep Trans."));
gtk_container_add (GTK_CONTAINER (abox), view->preserve_trans_toggle);
gtk_widget_show (view->preserve_trans_toggle);
g_signal_connect (view->preserve_trans_toggle, "toggled",
G_CALLBACK (gimp_layer_list_view_preserve_button_toggled),
view);
gimp_help_set_help_data (view->preserve_trans_toggle,
_("Keep Transparency"), "#keep_trans_button");
gimp_table_attach_aligned (GTK_TABLE (view->options_box), 0, 0,
_("Mode:"), 1.0, 0.5,
hbox, 2, TRUE);
/* Opacity scale */
view->opacity_adjustment =
GTK_ADJUSTMENT (gimp_scale_entry_new (GTK_TABLE (view->options_box), 0, 1,
_("Opacity:"), -1, -1,
100.0, 0.0, 100.0, 1.0, 10.0, 1,
TRUE, 0.0, 0.0,
NULL, "#opacity_sacle"));
g_signal_connect (view->opacity_adjustment, "value_changed",
G_CALLBACK (gimp_layer_list_view_opacity_scale_changed),
view);
/* Anchor button */
view->anchor_button =
gimp_editor_add_button (GIMP_EDITOR (view),
GIMP_STOCK_ANCHOR, _("Anchor Floating Layer"), NULL,
G_CALLBACK (gimp_layer_list_view_anchor_clicked),
NULL,
view);
gtk_box_reorder_child (GTK_BOX (GIMP_EDITOR (view)->button_box),
view->anchor_button, 5);
gimp_container_view_enable_dnd (GIMP_CONTAINER_VIEW (view),
GTK_BUTTON (view->anchor_button),
GIMP_TYPE_LAYER);
gtk_widget_set_sensitive (view->options_box, FALSE);
gtk_widget_set_sensitive (view->anchor_button, FALSE);
view->mode_changed_handler_id = 0;
view->opacity_changed_handler_id = 0;
view->preserve_trans_changed_handler_id = 0;
}
static void
gimp_layer_list_view_style_set (GtkWidget *widget,
GtkStyle *prev_style)
{
GimpLayerListView *layer_view;
gint content_spacing;
gint button_spacing;
layer_view = GIMP_LAYER_LIST_VIEW (widget);
gtk_widget_style_get (widget,
"content_spacing", &content_spacing,
"button_spacing", &button_spacing,
NULL);
gtk_table_set_col_spacings (GTK_TABLE (layer_view->options_box),
button_spacing);
gtk_table_set_row_spacings (GTK_TABLE (layer_view->options_box),
content_spacing);
if (GTK_WIDGET_CLASS (parent_class)->style_set)
GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);
}
/* GimpContainerView methods */
static void
gimp_layer_list_view_set_container (GimpContainerView *view,
GimpContainer *container)
{
GimpLayerListView *layer_view;
layer_view = GIMP_LAYER_LIST_VIEW (view);
if (view->container)
{
gimp_container_remove_handler (view->container,
layer_view->mode_changed_handler_id);
gimp_container_remove_handler (view->container,
layer_view->opacity_changed_handler_id);
gimp_container_remove_handler (view->container,
layer_view->preserve_trans_changed_handler_id);
}
if (GIMP_CONTAINER_VIEW_CLASS (parent_class)->set_container)
GIMP_CONTAINER_VIEW_CLASS (parent_class)->set_container (view, container);
if (view->container)
{
layer_view->mode_changed_handler_id =
gimp_container_add_handler (view->container, "mode_changed",
G_CALLBACK (gimp_layer_list_view_layer_signal_handler),
view);
layer_view->opacity_changed_handler_id =
gimp_container_add_handler (view->container, "opacity_changed",
G_CALLBACK (gimp_layer_list_view_layer_signal_handler),
view);
layer_view->preserve_trans_changed_handler_id =
gimp_container_add_handler (view->container, "preserve_trans_changed",
G_CALLBACK (gimp_layer_list_view_layer_signal_handler),
view);
}
}
static void
gimp_layer_list_view_select_item (GimpContainerView *view,
GimpViewable *item,
gpointer insert_data)
{
GimpItemListView *item_view;
GimpLayerListView *layer_view;
gboolean options_sensitive = FALSE;
gboolean anchor_sensitive = FALSE;
gboolean raise_sensitive = FALSE;
item_view = GIMP_ITEM_LIST_VIEW (view);
layer_view = GIMP_LAYER_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 (item)
{
gimp_layer_list_view_update_options (layer_view, GIMP_LAYER (item));
options_sensitive = TRUE;
if (gimp_layer_is_floating_sel (GIMP_LAYER (item)))
{
anchor_sensitive = TRUE;
gtk_widget_set_sensitive (item_view->lower_button, FALSE);
gtk_widget_set_sensitive (item_view->duplicate_button, FALSE);
gtk_widget_set_sensitive (item_view->edit_button, FALSE);
}
else
{
if (gimp_drawable_has_alpha (GIMP_DRAWABLE (item)) &&
gimp_container_get_child_index (view->container,
GIMP_OBJECT (item)))
{
raise_sensitive = TRUE;
}
}
}
gtk_widget_set_sensitive (layer_view->options_box, options_sensitive);
gtk_widget_set_sensitive (item_view->raise_button, raise_sensitive);
gtk_widget_set_sensitive (layer_view->anchor_button, anchor_sensitive);
}
/* "Anchor" functions */
static void
gimp_layer_list_view_anchor_clicked (GtkWidget *widget,
GimpLayerListView *view)
{
GimpImage *gimage;
GimpLayer *layer;
gimage = GIMP_ITEM_LIST_VIEW (view)->gimage;
layer = (GimpLayer *)
GIMP_ITEM_LIST_VIEW_GET_CLASS (view)->get_active_item (gimage);
if (layer && gimp_layer_is_floating_sel (layer))
{
floating_sel_anchor (layer);
gimp_image_flush (gimage);
}
}
/* Paint Mode, Opacity and Preserve trans. callbacks */
#define BLOCK() \
g_signal_handlers_block_by_func (layer, \
gimp_layer_list_view_layer_signal_handler, view)
#define UNBLOCK() \
g_signal_handlers_unblock_by_func (layer, \
gimp_layer_list_view_layer_signal_handler, view)
static void
gimp_layer_list_view_paint_mode_menu_callback (GtkWidget *widget,
GimpLayerListView *view)
{
GimpImage *gimage;
GimpLayer *layer;
gimage = GIMP_ITEM_LIST_VIEW (view)->gimage;
layer = (GimpLayer *)
GIMP_ITEM_LIST_VIEW_GET_CLASS (view)->get_active_item (gimage);
if (layer)
{
GimpLayerModeEffects mode;
mode = (GimpLayerModeEffects)
GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget),
"gimp-item-data"));
if (gimp_layer_get_mode (layer) != mode)
{
BLOCK();
gimp_layer_set_mode (layer, mode, TRUE);
UNBLOCK();
gimp_image_flush (gimage);
}
}
}
static void
gimp_layer_list_view_preserve_button_toggled (GtkWidget *widget,
GimpLayerListView *view)
{
GimpImage *gimage;
GimpLayer *layer;
gimage = GIMP_ITEM_LIST_VIEW (view)->gimage;
layer = (GimpLayer *)
GIMP_ITEM_LIST_VIEW_GET_CLASS (view)->get_active_item (gimage);
if (layer)
{
gboolean preserve_trans;
preserve_trans = GTK_TOGGLE_BUTTON (widget)->active;
if (gimp_layer_get_preserve_trans (layer) != preserve_trans)
{
BLOCK();
gimp_layer_set_preserve_trans (layer, preserve_trans, TRUE);
UNBLOCK();
}
}
}
static void
gimp_layer_list_view_opacity_scale_changed (GtkAdjustment *adjustment,
GimpLayerListView *view)
{
GimpImage *gimage;
GimpLayer *layer;
gimage = GIMP_ITEM_LIST_VIEW (view)->gimage;
layer = (GimpLayer *)
GIMP_ITEM_LIST_VIEW_GET_CLASS (view)->get_active_item (gimage);
if (layer)
{
gdouble opacity;
opacity = adjustment->value / 100.0;
if (gimp_layer_get_opacity (layer) != opacity)
{
BLOCK();
gimp_layer_set_opacity (layer, opacity, TRUE);
UNBLOCK();
gimp_image_flush (gimage);
}
}
}
#undef BLOCK
#undef UNBLOCK
static void
gimp_layer_list_view_layer_signal_handler (GimpLayer *layer,
GimpLayerListView *view)
{
GimpItemListView *item_view;
GimpLayer *active_layer;
item_view = GIMP_ITEM_LIST_VIEW (view);
active_layer = (GimpLayer *)
GIMP_ITEM_LIST_VIEW_GET_CLASS (view)->get_active_item (item_view->gimage);
if (active_layer == layer)
{
gimp_layer_list_view_update_options (view, layer);
}
}
#define BLOCK(object,function) \
g_signal_handlers_block_by_func ((object), (function), view)
#define UNBLOCK(object,function) \
g_signal_handlers_unblock_by_func ((object), (function), view)
static void
gimp_layer_list_view_update_options (GimpLayerListView *view,
GimpLayer *layer)
{
gimp_option_menu_set_history (GTK_OPTION_MENU (view->paint_mode_menu),
GINT_TO_POINTER (layer->mode));
if (layer->preserve_trans !=
GTK_TOGGLE_BUTTON (view->preserve_trans_toggle)->active)
{
BLOCK (view->preserve_trans_toggle,
gimp_layer_list_view_preserve_button_toggled);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (view->preserve_trans_toggle),
layer->preserve_trans);
UNBLOCK (view->preserve_trans_toggle,
gimp_layer_list_view_preserve_button_toggled);
}
if (layer->opacity * 100.0 != view->opacity_adjustment->value)
{
BLOCK (view->opacity_adjustment,
gimp_layer_list_view_opacity_scale_changed);
gtk_adjustment_set_value (view->opacity_adjustment,
layer->opacity * 100.0);
UNBLOCK (view->opacity_adjustment,
gimp_layer_list_view_opacity_scale_changed);
}
}
#undef BLOCK
#undef UNBLOCK
static void
gimp_layer_list_view_remove_layer (GimpImage *gimage,
GimpItem *layer)
{
if (gimp_layer_is_floating_sel (GIMP_LAYER (layer)))
floating_sel_remove (GIMP_LAYER (layer));
else
gimp_image_remove_layer (gimage, GIMP_LAYER (layer));
}
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