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gimp/app/gui/layers-commands.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 <string.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "gui-types.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "core/gimpimage-mask.h"
#include "core/gimpimage-merge.h"
#include "core/gimplayer.h"
#include "core/gimplayer-floating-sel.h"
#include "core/gimplayermask.h"
#include "core/gimplist.h"
#include "pdb/procedural_db.h"
#include "widgets/gimpenummenu.h"
#include "widgets/gimpitemfactory.h"
#include "widgets/gimpviewabledialog.h"
#include "widgets/gimpwidgets-utils.h"
#include "layers-commands.h"
#include "resize-dialog.h"
#include "undo.h"
#include "libgimp/gimpintl.h"
/* local function prototypes */
static void layers_add_mask_query (GimpLayer *layer);
static void layers_scale_layer_query (GimpImage *gimage,
GimpLayer *layer);
static void layers_resize_layer_query (GimpImage *gimage,
GimpLayer *layer);
#define return_if_no_image(gimage) \
gimage = (GimpImage *) gimp_widget_get_callback_context (widget); \
if (! GIMP_IS_IMAGE (gimage)) \
gimage = gimp_context_get_image (gimp_get_user_context (GIMP (data))); \
if (! gimage) \
return
#define return_if_no_layer(gimage,layer) \
return_if_no_image (gimage); \
layer = gimp_image_get_active_layer (gimage); \
if (! layer) \
return
/* public functions */
void
layers_previous_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *new_layer;
gint current_layer;
return_if_no_image (gimage);
current_layer =
gimp_image_get_layer_index (gimage, gimp_image_get_active_layer (gimage));
if (current_layer > 0)
{
new_layer = (GimpLayer *)
gimp_container_get_child_by_index (gimage->layers, current_layer - 1);
if (new_layer)
{
gimp_image_set_active_layer (gimage, new_layer);
gimp_image_flush (gimage);
}
}
}
void
layers_next_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *new_layer;
gint current_layer;
return_if_no_image (gimage);
current_layer =
gimp_image_get_layer_index (gimage, gimp_image_get_active_layer (gimage));
new_layer =
GIMP_LAYER (gimp_container_get_child_by_index (gimage->layers,
current_layer + 1));
if (new_layer)
{
gimp_image_set_active_layer (gimage, new_layer);
gimp_image_flush (gimage);
}
}
void
layers_raise_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage,active_layer);
gimp_image_raise_layer (gimage, active_layer);
gimp_image_flush (gimage);
}
void
layers_lower_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage,active_layer);
gimp_image_lower_layer (gimage, active_layer);
gimp_image_flush (gimage);
}
void
layers_raise_to_top_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage,active_layer);
gimp_image_raise_layer_to_top (gimage, active_layer);
gimp_image_flush (gimage);
}
void
layers_lower_to_bottom_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
gimp_image_lower_layer_to_bottom (gimage, active_layer);
gimp_image_flush (gimage);
}
void
layers_new_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
return_if_no_image (gimage);
layers_new_layer_query (gimage, NULL, TRUE);
}
void
layers_duplicate_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
GimpLayer *new_layer;
return_if_no_layer (gimage, active_layer);
new_layer = gimp_layer_copy (active_layer,
G_TYPE_FROM_INSTANCE (active_layer),
TRUE);
gimp_image_add_layer (gimage, new_layer, -1);
gimp_image_flush (gimage);
}
void
layers_anchor_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
layers_anchor_layer (active_layer);
}
void
layers_merge_down_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
gimp_image_merge_down (gimage, active_layer, GIMP_EXPAND_AS_NECESSARY);
gimp_image_flush (gimage);
}
void
layers_delete_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
if (gimp_layer_is_floating_sel (active_layer))
floating_sel_remove (active_layer);
else
gimp_image_remove_layer (gimage, active_layer);
gimp_image_flush (gimage);
}
void
layers_resize_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
layers_resize_layer_query (gimage, active_layer);
}
void
layers_resize_to_image_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
gimp_layer_resize_to_image (active_layer);
gimp_image_flush (gimage);
}
void
layers_scale_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
layers_scale_layer_query (gimage, active_layer);
}
void
layers_crop_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
gint x1, y1, x2, y2;
gint off_x, off_y;
return_if_no_layer (gimage, active_layer);
if (! gimp_image_mask_bounds (gimage, &x1, &y1, &x2, &y2))
{
g_message (_("Cannot crop because the current selection is empty."));
return;
}
gimp_drawable_offsets (GIMP_DRAWABLE (active_layer), &off_x, &off_y);
off_x -= x1;
off_y -= y1;
undo_push_group_start (gimage, LAYER_RESIZE_UNDO_GROUP);
if (gimp_layer_is_floating_sel (active_layer))
floating_sel_relax (active_layer, TRUE);
gimp_layer_resize (active_layer, x2 - x1, y2 - y1, off_x, off_y);
if (gimp_layer_is_floating_sel (active_layer))
floating_sel_rigor (active_layer, TRUE);
undo_push_group_end (gimage);
gimp_image_flush (gimage);
}
void
layers_add_layer_mask_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
layers_add_mask_query (active_layer);
}
void
layers_apply_layer_mask_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
if (gimp_layer_get_mask (active_layer))
{
gboolean flush;
flush = ! active_layer->mask->apply_mask || active_layer->mask->show_mask;
gimp_layer_apply_mask (active_layer, GIMP_MASK_APPLY, TRUE);
if (flush)
gimp_image_flush (gimage);
}
}
void
layers_delete_layer_mask_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
if (gimp_layer_get_mask (active_layer))
{
gboolean flush;
flush = active_layer->mask->apply_mask || active_layer->mask->show_mask;
gimp_layer_apply_mask (active_layer, GIMP_MASK_DISCARD, TRUE);
if (flush)
gimp_image_flush (gimage);
}
}
void
layers_mask_select_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
if (gimp_layer_get_mask (active_layer))
{
gimp_image_mask_layer_mask (gimage, active_layer);
gimp_image_flush (gimage);
}
}
void
layers_alpha_select_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
gimp_image_mask_layer_alpha (gimage, active_layer);
gimp_image_flush (gimage);
}
void
layers_add_alpha_channel_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
if (! gimp_drawable_has_alpha (GIMP_DRAWABLE (active_layer)))
{
gimp_layer_add_alpha (active_layer);
gimp_image_flush (gimage);
}
}
void
layers_edit_attributes_cmd_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
GimpLayer *active_layer;
return_if_no_layer (gimage, active_layer);
layers_edit_layer_query (active_layer);
}
void
layers_remove_layer (GimpImage *gimage,
GimpLayer *layer)
{
g_return_if_fail (GIMP_IS_IMAGE (gimage));
g_return_if_fail (GIMP_IS_LAYER (layer));
if (gimp_layer_is_floating_sel (layer))
floating_sel_remove (layer);
else
gimp_image_remove_layer (gimage, layer);
}
void
layers_anchor_layer (GimpLayer *layer)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
if (gimp_layer_is_floating_sel (layer))
{
floating_sel_anchor (layer);
gimp_image_flush (gimp_item_get_image (GIMP_ITEM (layer)));
}
}
/********************************/
/* The new layer query dialog */
/********************************/
typedef struct _NewLayerOptions NewLayerOptions;
struct _NewLayerOptions
{
GtkWidget *query_box;
GtkWidget *name_entry;
GtkWidget *size_se;
GimpFillType fill_type;
gint xsize;
gint ysize;
GimpImage *gimage;
};
static GimpFillType fill_type = GIMP_TRANSPARENT_FILL;
static gchar *layer_name = NULL;
static void
new_layer_query_ok_callback (GtkWidget *widget,
gpointer data)
{
NewLayerOptions *options;
GimpLayer *layer;
GimpImage *gimage;
options = (NewLayerOptions *) data;
if (layer_name)
g_free (layer_name);
layer_name = g_strdup (gtk_entry_get_text (GTK_ENTRY (options->name_entry)));
options->xsize =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (options->size_se), 0));
options->ysize =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (options->size_se), 1));
fill_type = options->fill_type;
if ((gimage = options->gimage))
{
layer = gimp_layer_new (gimage,
options->xsize,
options->ysize,
gimp_image_base_type_with_alpha (gimage),
layer_name,
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (layer)
{
gimp_drawable_fill_by_type (GIMP_DRAWABLE (layer),
gimp_get_user_context (gimage->gimp),
fill_type);
gimp_image_add_layer (gimage, layer, -1);
gimp_image_flush (gimage);
}
else
{
g_message ("new_layer_query_ok_callback():\n"
"could not allocate new layer");
}
}
gtk_widget_destroy (options->query_box);
}
void
layers_new_layer_query (GimpImage *gimage,
GimpLayer *template,
gboolean interactive)
{
NewLayerOptions *options;
GimpLayer *floating_sel;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *label;
GtkObject *adjustment;
GtkWidget *spinbutton;
GtkWidget *frame;
GtkWidget *button;
g_return_if_fail (GIMP_IS_IMAGE (gimage));
g_return_if_fail (! template || GIMP_IS_LAYER (template));
/* If there is a floating selection, the new command transforms
* the current fs into a new layer
*/
if ((floating_sel = gimp_image_floating_sel (gimage)))
{
floating_sel_to_layer (floating_sel);
gimp_image_flush (gimage);
return;
}
if (template || ! interactive)
{
GimpLayer *new_layer;
gint width, height;
gint off_x, off_y;
gdouble opacity;
GimpLayerModeEffects mode;
if (template)
{
width = gimp_drawable_width (GIMP_DRAWABLE (template));
height = gimp_drawable_height (GIMP_DRAWABLE (template));
gimp_drawable_offsets (GIMP_DRAWABLE (template), &off_x, &off_y);
opacity = template->opacity;
mode = template->mode;
}
else
{
width = gimp_image_get_width (gimage);
height = gimp_image_get_height (gimage);
off_x = 0;
off_y = 0;
opacity = 1.0;
mode = GIMP_NORMAL_MODE;
}
undo_push_group_start (gimage, EDIT_PASTE_UNDO_GROUP);
new_layer = gimp_layer_new (gimage,
width,
height,
gimp_image_base_type_with_alpha (gimage),
_("Empty Layer Copy"),
opacity,
mode);
if (template)
{
gimp_drawable_fill_by_type (GIMP_DRAWABLE (new_layer),
gimp_get_user_context (gimage->gimp),
GIMP_TRANSPARENT_FILL);
gimp_layer_translate (new_layer, off_x, off_y);
}
gimp_image_add_layer (gimage, new_layer, -1);
undo_push_group_end (gimage);
return;
}
options = g_new0 (NewLayerOptions, 1);
options->fill_type = fill_type;
options->gimage = gimage;
/* The dialog */
options->query_box =
gimp_viewable_dialog_new (GIMP_VIEWABLE (gimage),
_("New Layer"), "new_layer_options",
GTK_STOCK_NEW,
_("Create a New Layer"),
gimp_standard_help_func,
"dialogs/layers/new_layer.html",
GTK_STOCK_CANCEL, gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
GTK_STOCK_OK, new_layer_query_ok_callback,
options, NULL, NULL, TRUE, FALSE,
NULL);
g_object_weak_ref (G_OBJECT (options->query_box),
(GWeakNotify) g_free,
options);
/* The main vbox */
vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (options->query_box)->vbox),
vbox);
table = gtk_table_new (3, 2, FALSE);
gtk_table_set_col_spacing (GTK_TABLE (table), 0, 4);
gtk_table_set_row_spacing (GTK_TABLE (table), 0, 4);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
/* The name label and entry */
label = gtk_label_new (_("Layer Name:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 1);
gtk_widget_show (label);
options->name_entry = gtk_entry_new ();
gtk_widget_set_size_request (options->name_entry, 75, -1);
gtk_table_attach_defaults (GTK_TABLE (table),
options->name_entry, 1, 2, 0, 1);
gtk_entry_set_text (GTK_ENTRY (options->name_entry),
(layer_name ? layer_name : _("New Layer")));
gtk_widget_show (options->name_entry);
/* The size labels */
label = gtk_label_new (_("Layer Width:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
gtk_widget_show (label);
label = gtk_label_new (_("Height:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 2, 3,
GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
gtk_widget_show (label);
/* The size sizeentry */
adjustment = gtk_adjustment_new (1, 1, 1, 1, 10, 1);
spinbutton = gtk_spin_button_new (GTK_ADJUSTMENT (adjustment), 1, 2);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_widget_set_size_request (spinbutton, 75, -1);
options->size_se = gimp_size_entry_new (1, gimage->unit, "%a",
TRUE, TRUE, FALSE, 75,
GIMP_SIZE_ENTRY_UPDATE_SIZE);
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (options->size_se),
GTK_SPIN_BUTTON (spinbutton), NULL);
gtk_table_attach_defaults (GTK_TABLE (options->size_se), spinbutton,
1, 2, 0, 1);
gtk_widget_show (spinbutton);
gtk_table_attach (GTK_TABLE (table), options->size_se, 1, 2, 1, 3,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (options->size_se);
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (options->size_se),
GIMP_UNIT_PIXEL);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (options->size_se), 0,
gimage->xresolution, FALSE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (options->size_se), 1,
gimage->yresolution, FALSE);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (options->size_se), 0,
GIMP_MIN_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (options->size_se), 1,
GIMP_MIN_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (options->size_se), 0,
0, gimage->width);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (options->size_se), 1,
0, gimage->height);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (options->size_se), 0,
gimage->width);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (options->size_se), 1,
gimage->height);
gtk_widget_show (table);
/* The radio frame */
frame = gimp_enum_radio_frame_new_with_range (GIMP_TYPE_FILL_TYPE,
GIMP_FOREGROUND_FILL,
GIMP_TRANSPARENT_FILL,
gtk_label_new (_("Layer Fill Type")),
2,
G_CALLBACK (gimp_radio_button_update),
&options->fill_type,
&button);
gimp_radio_group_set_active (GTK_RADIO_BUTTON (button),
GINT_TO_POINTER (options->fill_type));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
gtk_widget_show (vbox);
gtk_widget_show (options->query_box);
}
/**************************************/
/* The edit layer attributes dialog */
/**************************************/
typedef struct _EditLayerOptions EditLayerOptions;
struct _EditLayerOptions
{
GtkWidget *query_box;
GtkWidget *name_entry;
GimpLayer *layer;
GimpImage *gimage;
};
static void
edit_layer_query_ok_callback (GtkWidget *widget,
gpointer data)
{
EditLayerOptions *options;
GimpLayer *layer;
options = (EditLayerOptions *) data;
if ((layer = options->layer))
{
const gchar *new_name;
new_name = gtk_entry_get_text (GTK_ENTRY (options->name_entry));
if (strcmp (new_name, gimp_object_get_name (GIMP_OBJECT (layer))))
{
undo_push_group_start (options->gimage, LAYER_PROPERTIES_UNDO_GROUP);
if (gimp_layer_is_floating_sel (layer))
{
/* If the layer is a floating selection, make it a layer */
floating_sel_to_layer (layer);
}
undo_push_item_rename (options->gimage, GIMP_ITEM (layer));
gimp_object_set_name (GIMP_OBJECT (layer), new_name);
undo_push_group_end (options->gimage);
}
}
gimp_image_flush (options->gimage);
gtk_widget_destroy (options->query_box);
}
void
layers_edit_layer_query (GimpLayer *layer)
{
EditLayerOptions *options;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *label;
options = g_new0 (EditLayerOptions, 1);
options->layer = layer;
options->gimage = gimp_item_get_image (GIMP_ITEM (layer));
/* The dialog */
options->query_box =
gimp_viewable_dialog_new (GIMP_VIEWABLE (layer),
_("Layer Attributes"),
"edit_layer_attributes",
GIMP_STOCK_EDIT,
_("Edit Layer Attributes"),
gimp_standard_help_func,
"dialogs/layers/edit_layer_attributes.html",
GTK_STOCK_CANCEL, gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
GTK_STOCK_OK, edit_layer_query_ok_callback,
options, NULL, NULL, TRUE, FALSE,
NULL);
g_object_weak_ref (G_OBJECT (options->query_box),
(GWeakNotify) g_free,
options);
g_signal_connect_object (G_OBJECT (layer), "removed",
G_CALLBACK (gtk_widget_destroy),
G_OBJECT (options->query_box),
G_CONNECT_SWAPPED);
/* The main vbox */
vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (options->query_box)->vbox),
vbox);
/* The name hbox, label and entry */
hbox = gtk_hbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
label = gtk_label_new (_("Layer name:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
options->name_entry = gtk_entry_new ();
gtk_box_pack_start (GTK_BOX (hbox), options->name_entry, TRUE, TRUE, 0);
gtk_entry_set_text (GTK_ENTRY (options->name_entry),
((gimp_layer_is_floating_sel (layer) ?
_("Floating Selection") :
gimp_object_get_name (GIMP_OBJECT (layer)))));
gtk_widget_show (options->name_entry);
g_signal_connect (G_OBJECT (options->name_entry), "activate",
G_CALLBACK (edit_layer_query_ok_callback),
options);
gtk_widget_show (hbox);
gtk_widget_show (vbox);
gtk_widget_show (options->query_box);
}
/*******************************/
/* The add mask query dialog */
/*******************************/
typedef struct _AddMaskOptions AddMaskOptions;
struct _AddMaskOptions
{
GtkWidget *query_box;
GimpLayer *layer;
GimpAddMaskType add_mask_type;
};
static void
add_mask_query_ok_callback (GtkWidget *widget,
gpointer data)
{
AddMaskOptions *options;
GimpImage *gimage;
GimpLayerMask *mask;
GimpLayer *layer;
options = (AddMaskOptions *) data;
if ((layer = (options->layer)) && (gimage = GIMP_ITEM (layer)->gimage))
{
mask = gimp_layer_create_mask (layer, options->add_mask_type);
gimp_layer_add_mask (layer, mask, TRUE);
g_object_unref (G_OBJECT (mask));
gimp_image_flush (gimage);
}
gtk_widget_destroy (options->query_box);
}
static void
layers_add_mask_query (GimpLayer *layer)
{
AddMaskOptions *options;
GtkWidget *frame;
GimpImage *gimage;
/* The new options structure */
options = g_new (AddMaskOptions, 1);
options->layer = layer;
options->add_mask_type = GIMP_ADD_WHITE_MASK;
gimage = gimp_item_get_image (GIMP_ITEM (layer));
/* The dialog */
options->query_box =
gimp_viewable_dialog_new (GIMP_VIEWABLE (layer),
_("Add Layer Mask"), "add_mask_options",
GTK_STOCK_ADD,
_("Add a Mask to the Layer"),
gimp_standard_help_func,
"dialogs/layers/add_layer_mask.html",
GTK_STOCK_CANCEL, gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
GTK_STOCK_OK, add_mask_query_ok_callback,
options, NULL, NULL, TRUE, FALSE,
NULL);
g_object_weak_ref (G_OBJECT (options->query_box),
(GWeakNotify) g_free,
options);
g_signal_connect_object (G_OBJECT (layer), "removed",
G_CALLBACK (gtk_widget_destroy),
G_OBJECT (options->query_box),
G_CONNECT_SWAPPED);
/* The radio frame and box */
if (! gimp_image_mask_is_empty (gimage))
{
options->add_mask_type = GIMP_ADD_SELECTION_MASK;
frame =
gimp_radio_group_new2 (TRUE, _("Initialize Layer Mask to:"),
G_CALLBACK (gimp_radio_button_update),
&options->add_mask_type,
GINT_TO_POINTER (options->add_mask_type),
_("Selection"),
GINT_TO_POINTER (GIMP_ADD_SELECTION_MASK), NULL,
_("Inverse Selection"),
GINT_TO_POINTER (GIMP_ADD_INVERSE_SELECTION_MASK), NULL,
_("Grayscale Copy of Layer"),
GINT_TO_POINTER (GIMP_ADD_COPY_MASK), NULL,
_("Inverse Grayscale Copy of Layer"),
GINT_TO_POINTER (GIMP_ADD_INVERSE_COPY_MASK), NULL,
_("White (Full Opacity)"),
GINT_TO_POINTER (GIMP_ADD_WHITE_MASK), NULL,
_("Black (Full Transparency)"),
GINT_TO_POINTER (GIMP_ADD_BLACK_MASK), NULL,
_("Layer's Alpha Channel"),
GINT_TO_POINTER (GIMP_ADD_ALPHA_MASK), NULL,
NULL);
}
else
{
frame =
gimp_radio_group_new2 (TRUE, _("Initialize Layer Mask to:"),
G_CALLBACK (gimp_radio_button_update),
&options->add_mask_type,
GINT_TO_POINTER (options->add_mask_type),
_("Grayscale Copy of Layer"),
GINT_TO_POINTER (GIMP_ADD_COPY_MASK), NULL,
_("Inverse Grayscale Copy of Layer"),
GINT_TO_POINTER (GIMP_ADD_INVERSE_COPY_MASK), NULL,
_("White (Full Opacity)"),
GINT_TO_POINTER (GIMP_ADD_WHITE_MASK), NULL,
_("Black (Full Transparency)"),
GINT_TO_POINTER (GIMP_ADD_BLACK_MASK), NULL,
_("Layer's Alpha Channel"),
GINT_TO_POINTER (GIMP_ADD_ALPHA_MASK), NULL,
NULL);
}
gtk_container_set_border_width (GTK_CONTAINER (frame), 6);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (options->query_box)->vbox),
frame);
gtk_widget_show (frame);
gtk_widget_show (options->query_box);
}
/****************************/
/* The scale layer dialog */
/****************************/
typedef struct _ScaleLayerOptions ScaleLayerOptions;
struct _ScaleLayerOptions
{
GimpLayer *layer;
Resize *resize;
};
static void
scale_layer_query_ok_callback (GtkWidget *widget,
gpointer data)
{
ScaleLayerOptions *options;
GimpLayer *layer;
options = (ScaleLayerOptions *) data;
if (options->resize->width > 0 && options->resize->height > 0 &&
(layer = (options->layer)))
{
GimpImage *gimage;
gtk_widget_set_sensitive (options->resize->resize_shell, FALSE);
gimage = gimp_item_get_image (GIMP_ITEM (layer));
if (gimage)
{
undo_push_group_start (gimage, LAYER_SCALE_UNDO_GROUP);
if (gimp_layer_is_floating_sel (layer))
floating_sel_relax (layer, TRUE);
gimp_layer_scale (layer,
options->resize->width,
options->resize->height,
options->resize->interpolation,
TRUE);
if (gimp_layer_is_floating_sel (layer))
floating_sel_rigor (layer, TRUE);
undo_push_group_end (gimage);
gimp_image_flush (gimage);
}
gtk_widget_destroy (options->resize->resize_shell);
}
else
{
g_message (_("Invalid width or height.\n"
"Both must be positive."));
}
}
static void
layers_scale_layer_query (GimpImage *gimage,
GimpLayer *layer)
{
ScaleLayerOptions *options;
/* the new options structure */
options = g_new (ScaleLayerOptions, 1);
options->layer = layer;
options->resize =
resize_widget_new (gimage,
ScaleWidget,
ResizeLayer,
G_OBJECT (layer),
"removed",
gimp_drawable_width (GIMP_DRAWABLE (layer)),
gimp_drawable_height (GIMP_DRAWABLE (layer)),
gimage->xresolution,
gimage->yresolution,
gimage->unit,
TRUE,
G_CALLBACK (scale_layer_query_ok_callback),
NULL,
options);
g_object_weak_ref (G_OBJECT (options->resize->resize_shell),
(GWeakNotify) g_free,
options);
gtk_widget_show (options->resize->resize_shell);
}
/*****************************/
/* The resize layer dialog */
/*****************************/
typedef struct _ResizeLayerOptions ResizeLayerOptions;
struct _ResizeLayerOptions
{
GimpLayer *layer;
Resize *resize;
};
static void
resize_layer_query_ok_callback (GtkWidget *widget,
gpointer data)
{
ResizeLayerOptions *options;
GimpLayer *layer;
options = (ResizeLayerOptions *) data;
if (options->resize->width > 0 && options->resize->height > 0 &&
(layer = (options->layer)))
{
GimpImage *gimage;
gtk_widget_set_sensitive (options->resize->resize_shell, FALSE);
gimage = gimp_item_get_image (GIMP_ITEM (layer));
if (gimage)
{
undo_push_group_start (gimage, LAYER_RESIZE_UNDO_GROUP);
if (gimp_layer_is_floating_sel (layer))
floating_sel_relax (layer, TRUE);
gimp_layer_resize (layer,
options->resize->width,
options->resize->height,
options->resize->offset_x,
options->resize->offset_y);
if (gimp_layer_is_floating_sel (layer))
floating_sel_rigor (layer, TRUE);
undo_push_group_end (gimage);
gimp_image_flush (gimage);
}
gtk_widget_destroy (options->resize->resize_shell);
}
else
{
g_message (_("Invalid width or height.\n"
"Both must be positive."));
}
}
static void
layers_resize_layer_query (GimpImage *gimage,
GimpLayer *layer)
{
ResizeLayerOptions *options;
/* the new options structure */
options = g_new (ResizeLayerOptions, 1);
options->layer = layer;
options->resize =
resize_widget_new (gimage,
ResizeWidget,
ResizeLayer,
G_OBJECT (layer),
"removed",
gimp_drawable_width (GIMP_DRAWABLE (layer)),
gimp_drawable_height (GIMP_DRAWABLE (layer)),
gimage->xresolution,
gimage->yresolution,
gimage->unit,
TRUE,
G_CALLBACK (resize_layer_query_ok_callback),
NULL,
options);
g_object_weak_ref (G_OBJECT (options->resize->resize_shell),
(GWeakNotify) g_free,
options);
gtk_widget_show (options->resize->resize_shell);
}
void
layers_menu_update (GtkItemFactory *factory,
gpointer data)
{
GimpImage *gimage;
GimpLayer *layer;
gboolean fs = FALSE; /* floating sel */
gboolean ac = FALSE; /* active channel */
gboolean lm = FALSE; /* layer mask */
gboolean lp = FALSE; /* layers present */
gboolean alpha = FALSE; /* alpha channel present */
gboolean indexed = FALSE; /* is indexed */
gboolean next_alpha = FALSE;
GList *list;
GList *next = NULL;
GList *prev = NULL;
gimage = GIMP_IMAGE (data);
layer = gimp_image_get_active_layer (gimage);
if (layer)
lm = (gimp_layer_get_mask (layer)) ? TRUE : FALSE;
fs = (gimp_image_floating_sel (gimage) != NULL);
ac = (gimp_image_get_active_channel (gimage) != NULL);
alpha = layer && gimp_drawable_has_alpha (GIMP_DRAWABLE (layer));
lp = ! gimp_image_is_empty (gimage);
indexed = (gimp_image_base_type (gimage) == GIMP_INDEXED);
for (list = GIMP_LIST (gimage->layers)->list;
list;
list = g_list_next (list))
{
if (layer == (GimpLayer *) list->data)
{
prev = g_list_previous (list);
next = g_list_next (list);
break;
}
}
if (next)
next_alpha = gimp_drawable_has_alpha (GIMP_DRAWABLE (next->data));
else
next_alpha = FALSE;
#define SET_SENSITIVE(menu,condition) \
gimp_item_factory_set_sensitive (factory, menu, (condition) != 0)
SET_SENSITIVE ("/New Layer...", gimage);
SET_SENSITIVE ("/Raise Layer", !fs && !ac && gimage && lp && alpha && prev);
SET_SENSITIVE ("/Layer to Top", !fs && !ac && gimage && lp && alpha && prev);
SET_SENSITIVE ("/Lower Layer", !fs && !ac && gimage && lp && next && next_alpha);
SET_SENSITIVE ("/Layer to Bottom", !fs && !ac && gimage && lp && next && next_alpha);
SET_SENSITIVE ("/Duplicate Layer", !fs && !ac && gimage && lp);
SET_SENSITIVE ("/Anchor Layer", fs && !ac && gimage && lp);
SET_SENSITIVE ("/Merge Down", !fs && !ac && gimage && lp && next);
SET_SENSITIVE ("/Delete Layer", !ac && gimage && lp);
SET_SENSITIVE ("/Layer Boundary Size...", !ac && gimage && lp);
SET_SENSITIVE ("/Layer to Imagesize", !ac && gimage && lp);
SET_SENSITIVE ("/Scale Layer...", !ac && gimage && lp);
SET_SENSITIVE ("/Add Layer Mask...", !fs && !ac && gimage && !lm && lp && alpha && !indexed);
SET_SENSITIVE ("/Apply Layer Mask", !fs && !ac && gimage && lm && lp);
SET_SENSITIVE ("/Delete Layer Mask", !fs && !ac && gimage && lm && lp);
SET_SENSITIVE ("/Mask to Selection", !fs && !ac && gimage && lm && lp);
SET_SENSITIVE ("/Add Alpha Channel", !fs && !alpha);
SET_SENSITIVE ("/Alpha to Selection", !fs && !ac && gimage && lp && alpha);
SET_SENSITIVE ("/Edit Layer Attributes...", !fs && !ac && gimage && lp);
#undef SET_SENSITIVE
}
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