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gimp/app/dialogs/palette-import-dialog.c

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/* GIMP - The GNU 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "dialogs-types.h"
#include "core/gimp.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpdatafactory.h"
#include "core/gimpdrawable.h"
#include "core/gimpgradient.h"
#include "core/gimpimage.h"
#include "core/gimppalette.h"
#include "core/gimppalette-import.h"
#include "widgets/gimpcontainercombobox.h"
#include "widgets/gimpdnd.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpview.h"
#include "widgets/gimpwidgets-utils.h"
#include "palette-import-dialog.h"
#include "gimp-intl.h"
typedef enum
{
GRADIENT_IMPORT,
IMAGE_IMPORT,
FILE_IMPORT
} ImportType;
typedef struct _ImportDialog ImportDialog;
struct _ImportDialog
{
GtkWidget *dialog;
ImportType import_type;
GimpContext *context;
GimpImage *image;
GimpPalette *palette;
GtkWidget *gradient_radio;
GtkWidget *image_radio;
GtkWidget *file_radio;
GtkWidget *gradient_combo;
GtkWidget *image_combo;
GtkWidget *file_chooser;
GtkWidget *sample_merged_toggle;
GtkWidget *selection_only_toggle;
GtkWidget *entry;
GtkWidget *num_colors;
GtkWidget *columns;
GtkWidget *threshold;
GtkWidget *preview;
GtkWidget *no_colors_label;
};
static void palette_import_free (ImportDialog *private);
static void palette_import_response (GtkWidget *dialog,
gint response_id,
ImportDialog *private);
static void palette_import_gradient_changed (GimpContext *context,
GimpGradient *gradient,
ImportDialog *private);
static void palette_import_image_changed (GimpContext *context,
GimpImage *image,
ImportDialog *private);
static void palette_import_layer_changed (GimpImage *image,
ImportDialog *private);
static void palette_import_mask_changed (GimpImage *image,
ImportDialog *private);
static void palette_import_filename_changed (GtkFileChooser *button,
ImportDialog *private);
static void import_dialog_drop_callback (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data);
static void palette_import_grad_callback (GtkWidget *widget,
ImportDialog *private);
static void palette_import_image_callback (GtkWidget *widget,
ImportDialog *private);
static void palette_import_file_callback (GtkWidget *widget,
ImportDialog *private);
static void palette_import_columns_changed (GimpLabelSpin *columns,
ImportDialog *private);
static void palette_import_image_add (GimpContainer *container,
GimpImage *image,
ImportDialog *private);
static void palette_import_image_remove (GimpContainer *container,
GimpImage *image,
ImportDialog *private);
static void palette_import_make_palette (ImportDialog *private);
/* public functions */
GtkWidget *
palette_import_dialog_new (GimpContext *context)
{
ImportDialog *private;
GimpGradient *gradient;
GtkWidget *dialog;
GtkWidget *main_hbox;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *grid;
GtkSizeGroup *size_group;
GSList *group = NULL;
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
gradient = gimp_context_get_gradient (context);
private = g_slice_new0 (ImportDialog);
private->import_type = GRADIENT_IMPORT;
private->context = gimp_context_new (context->gimp, "Palette Import",
context);
dialog = private->dialog =
gimp_dialog_new (_("Import a New Palette"),
"gimp-palette-import", NULL, 0,
gimp_standard_help_func,
GIMP_HELP_PALETTE_IMPORT,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_Import"), GTK_RESPONSE_OK,
NULL);
gimp_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
g_object_weak_ref (G_OBJECT (dialog),
(GWeakNotify) palette_import_free, private);
g_signal_connect (dialog, "response",
G_CALLBACK (palette_import_response),
private);
gimp_dnd_viewable_dest_add (dialog,
GIMP_TYPE_GRADIENT,
import_dialog_drop_callback,
private);
gimp_dnd_viewable_dest_add (dialog,
GIMP_TYPE_IMAGE,
import_dialog_drop_callback,
private);
main_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_hbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
main_hbox, TRUE, TRUE, 0);
gtk_widget_show (main_hbox);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_box_pack_start (GTK_BOX (main_hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
/* The "Source" frame */
frame = gimp_frame_new (_("Select Source"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
grid = gtk_grid_new ();
gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
gtk_container_add (GTK_CONTAINER (frame), grid);
gtk_widget_show (grid);
private->gradient_radio =
gtk_radio_button_new_with_mnemonic (group, _("_Gradient"));
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (private->gradient_radio));
gtk_grid_attach (GTK_GRID (grid), private->gradient_radio, 0, 0, 1, 1);
gtk_widget_show (private->gradient_radio);
g_signal_connect (private->gradient_radio, "toggled",
G_CALLBACK (palette_import_grad_callback),
private);
private->image_radio =
gtk_radio_button_new_with_mnemonic (group, _("I_mage"));
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (private->image_radio));
gtk_grid_attach (GTK_GRID (grid), private->image_radio, 0, 1, 1, 1);
gtk_widget_show (private->image_radio);
g_signal_connect (private->image_radio, "toggled",
G_CALLBACK (palette_import_image_callback),
private);
gtk_widget_set_sensitive (private->image_radio,
! gimp_container_is_empty (context->gimp->images));
private->sample_merged_toggle =
gtk_check_button_new_with_mnemonic (_("Sample _Merged"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (private->sample_merged_toggle),
TRUE);
gtk_grid_attach (GTK_GRID (grid), private->sample_merged_toggle, 1, 2, 1, 1);
gtk_widget_show (private->sample_merged_toggle);
g_signal_connect_swapped (private->sample_merged_toggle, "toggled",
G_CALLBACK (palette_import_make_palette),
private);
private->selection_only_toggle =
gtk_check_button_new_with_mnemonic (_("_Selected Pixels only"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (private->selection_only_toggle),
FALSE);
gtk_grid_attach (GTK_GRID (grid), private->selection_only_toggle, 1, 3, 1, 1);
gtk_widget_show (private->selection_only_toggle);
g_signal_connect_swapped (private->selection_only_toggle, "toggled",
G_CALLBACK (palette_import_make_palette),
private);
private->file_radio =
gtk_radio_button_new_with_mnemonic (group, _("Palette _file"));
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (private->image_radio));
gtk_grid_attach (GTK_GRID (grid), private->file_radio, 0, 4, 1, 1);
gtk_widget_show (private->file_radio);
g_signal_connect (private->file_radio, "toggled",
G_CALLBACK (palette_import_file_callback),
private);
size_group = gtk_size_group_new (GTK_SIZE_GROUP_VERTICAL);
/* The gradient menu */
private->gradient_combo =
gimp_container_combo_box_new (gimp_data_factory_get_container (context->gimp->gradient_factory),
private->context, 24, 1);
gimp_grid_attach_aligned (GTK_GRID (grid), 0, 0,
NULL, 0.0, 0.5, private->gradient_combo, 1);
gtk_size_group_add_widget (size_group, private->gradient_combo);
/* The image menu */
private->image_combo =
gimp_container_combo_box_new (context->gimp->images, private->context,
24, 1);
gimp_grid_attach_aligned (GTK_GRID (grid), 0, 1,
NULL, 0.0, 0.5, private->image_combo, 1);
gtk_size_group_add_widget (size_group, private->image_combo);
/* Palette file name entry */
private->file_chooser = gtk_file_chooser_button_new (_("Select Palette File"),
GTK_FILE_CHOOSER_ACTION_OPEN);
gimp_grid_attach_aligned (GTK_GRID (grid), 0, 4,
NULL, 0.0, 0.5, private->file_chooser, 1);
gtk_size_group_add_widget (size_group, private->file_chooser);
g_object_unref (size_group);
/* The "Import" frame */
frame = gimp_frame_new (_("Import Options"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
grid = gtk_grid_new ();
gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
gtk_container_add (GTK_CONTAINER (frame), grid);
gtk_widget_show (grid);
/* The source's name */
private->entry = gtk_entry_new ();
gtk_entry_set_text (GTK_ENTRY (private->entry),
gradient ?
gimp_object_get_name (gradient) : _("New import"));
gimp_grid_attach_aligned (GTK_GRID (grid), 0, 0,
_("Palette _name:"), 0.0, 0.5,
private->entry, 2);
/* The # of colors */
private->num_colors = gimp_scale_entry_new (_("N_umber of colors:"),
256, 2, 10000, 0);
gimp_grid_attach_aligned (GTK_GRID (grid), -1, 1,
NULL, 0.0, 0.5,
private->num_colors, 3);
gimp_scale_entry_set_logarithmic (GIMP_SCALE_ENTRY (private->num_colors), TRUE);
g_signal_connect_swapped (private->num_colors,
"value-changed",
G_CALLBACK (palette_import_make_palette),
private);
/* The columns */
private->columns = gimp_scale_entry_new (_("C_olumns:"), 16, 0, 64, 0);
gimp_grid_attach_aligned (GTK_GRID (grid), -1, 2,
NULL, 0.0, 0.5,
private->columns, 3);
g_signal_connect (private->columns, "value-changed",
G_CALLBACK (palette_import_columns_changed),
private);
/* The interval */
private->threshold = gimp_scale_entry_new (_("I_nterval:"), 1, 1, 128, 0);
gimp_grid_attach_aligned (GTK_GRID (grid), -1, 3,
NULL, 0.0, 0.5,
private->threshold, 3);
g_signal_connect_swapped (private->threshold, "value-changed",
G_CALLBACK (palette_import_make_palette),
private);
/* The "Preview" frame */
frame = gimp_frame_new (_("Preview"));
gtk_box_pack_start (GTK_BOX (main_hbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
private->preview = gimp_view_new_full_by_types (private->context,
GIMP_TYPE_VIEW,
GIMP_TYPE_PALETTE,
192, 192, 1,
TRUE, FALSE, FALSE);
gtk_widget_set_halign (private->preview, 0.0);
gtk_box_pack_start (GTK_BOX (vbox), private->preview, FALSE, FALSE, 0);
gtk_widget_show (private->preview);
private->no_colors_label =
gtk_label_new (_("The selected source contains no colors."));
gtk_widget_set_size_request (private->no_colors_label, 194, -1);
gtk_label_set_line_wrap (GTK_LABEL (private->no_colors_label), TRUE);
gimp_label_set_attributes (GTK_LABEL (private->no_colors_label),
PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
-1);
gtk_box_pack_start (GTK_BOX (vbox), private->no_colors_label, FALSE, FALSE, 0);
gtk_widget_show (private->no_colors_label);
/* keep the dialog up-to-date */
g_signal_connect (context->gimp->images, "add",
G_CALLBACK (palette_import_image_add),
private);
g_signal_connect (context->gimp->images, "remove",
G_CALLBACK (palette_import_image_remove),
private);
g_signal_connect (private->context, "gradient-changed",
G_CALLBACK (palette_import_gradient_changed),
private);
g_signal_connect (private->context, "image-changed",
G_CALLBACK (palette_import_image_changed),
private);
g_signal_connect (private->file_chooser, "selection-changed",
G_CALLBACK (palette_import_filename_changed),
private);
palette_import_grad_callback (private->gradient_radio, private);
return dialog;
}
/* private functions */
static void
palette_import_free (ImportDialog *private)
{
Gimp *gimp = private->context->gimp;
g_signal_handlers_disconnect_by_func (gimp->images,
palette_import_image_add,
private);
g_signal_handlers_disconnect_by_func (gimp->images,
palette_import_image_remove,
private);
if (private->palette)
g_object_unref (private->palette);
g_object_unref (private->context);
g_slice_free (ImportDialog, private);
}
/* the palette import response callback ************************************/
static void
palette_import_response (GtkWidget *dialog,
gint response_id,
ImportDialog *private)
{
palette_import_image_changed (private->context, NULL, private);
if (response_id == GTK_RESPONSE_OK)
{
Gimp *gimp = private->context->gimp;
if (private->palette &&
gimp_palette_get_n_colors (private->palette) > 0)
{
const gchar *name = gtk_entry_get_text (GTK_ENTRY (private->entry));
GError *error = NULL;
if (name && *name)
gimp_object_set_name (GIMP_OBJECT (private->palette), name);
if (! gimp_data_factory_data_save_single (gimp->palette_factory,
GIMP_DATA (private->palette),
&error))
{
gimp_message (gimp, G_OBJECT (dialog), GIMP_MESSAGE_ERROR,
_("The palette was not imported: %s"),
error->message);
g_clear_error (&error);
return;
}
gimp_container_add (gimp_data_factory_get_container (gimp->palette_factory),
GIMP_OBJECT (private->palette));
}
else
{
gimp_message_literal (gimp, G_OBJECT (dialog), GIMP_MESSAGE_ERROR,
_("There is no palette to import."));
return;
}
}
gtk_widget_destroy (dialog);
}
/* functions to create & update the import dialog's gradient selection *****/
static void
palette_import_gradient_changed (GimpContext *context,
GimpGradient *gradient,
ImportDialog *private)
{
if (gradient && private->import_type == GRADIENT_IMPORT)
{
gtk_entry_set_text (GTK_ENTRY (private->entry),
gimp_object_get_name (gradient));
palette_import_make_palette (private);
}
}
static void
palette_import_image_changed (GimpContext *context,
GimpImage *image,
ImportDialog *private)
{
if (private->image)
{
g_signal_handlers_disconnect_by_func (private->image,
palette_import_layer_changed,
private);
g_signal_handlers_disconnect_by_func (private->image,
palette_import_mask_changed,
private);
}
private->image = image;
if (private->import_type == IMAGE_IMPORT)
{
gboolean sensitive = FALSE;
if (image)
{
gchar *label;
label = g_strdup_printf ("%s-%d",
gimp_image_get_display_name (image),
gimp_image_get_id (image));
gtk_entry_set_text (GTK_ENTRY (private->entry), label);
g_free (label);
palette_import_make_palette (private);
if (gimp_image_get_base_type (image) != GIMP_INDEXED)
sensitive = TRUE;
}
gtk_widget_set_sensitive (private->sample_merged_toggle, sensitive);
gtk_widget_set_sensitive (private->selection_only_toggle, sensitive);
gtk_widget_set_sensitive (private->threshold, sensitive);
gtk_widget_set_sensitive (private->num_colors, sensitive);
}
if (private->image)
{
g_signal_connect (private->image, "selected-layers-changed",
G_CALLBACK (palette_import_layer_changed),
private);
g_signal_connect (private->image, "mask-changed",
G_CALLBACK (palette_import_mask_changed),
private);
}
}
static void
palette_import_layer_changed (GimpImage *image,
ImportDialog *private)
{
if (private->import_type == IMAGE_IMPORT &&
! gtk_toggle_button_get_active
(GTK_TOGGLE_BUTTON (private->sample_merged_toggle)))
{
palette_import_make_palette (private);
}
}
static void
palette_import_mask_changed (GimpImage *image,
ImportDialog *private)
{
if (private->import_type == IMAGE_IMPORT &&
gtk_toggle_button_get_active
(GTK_TOGGLE_BUTTON (private->selection_only_toggle)))
{
palette_import_make_palette (private);
}
}
static void
palette_import_filename_changed (GtkFileChooser *button,
ImportDialog *private)
{
gchar *filename;
if (private->import_type != FILE_IMPORT)
return;
filename = gtk_file_chooser_get_filename (button);
if (filename)
{
gchar *basename = g_filename_display_basename (filename);
/* TODO: strip filename extension */
gtk_entry_set_text (GTK_ENTRY (private->entry), basename);
g_free (basename);
}
else
{
gtk_entry_set_text (GTK_ENTRY (private->entry), "");
}
g_free (filename);
palette_import_make_palette (private);
}
static void
import_dialog_drop_callback (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data)
{
ImportDialog *private = data;
gimp_context_set_by_type (private->context,
G_TYPE_FROM_INSTANCE (viewable),
GIMP_OBJECT (viewable));
if (GIMP_IS_GRADIENT (viewable) &&
private->import_type != GRADIENT_IMPORT)
{
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (private->gradient_radio),
TRUE);
}
else if (GIMP_IS_IMAGE (viewable) &&
private->import_type != IMAGE_IMPORT)
{
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (private->image_radio),
TRUE);
}
}
/* the import source menu item callbacks ***********************************/
static void
palette_import_set_sensitive (ImportDialog *private)
{
gboolean gradient = (private->import_type == GRADIENT_IMPORT);
gboolean image = (private->import_type == IMAGE_IMPORT);
gboolean file = (private->import_type == FILE_IMPORT);
gtk_widget_set_sensitive (private->gradient_combo, gradient);
gtk_widget_set_sensitive (private->image_combo, image);
gtk_widget_set_sensitive (private->sample_merged_toggle, image);
gtk_widget_set_sensitive (private->selection_only_toggle, image);
gtk_widget_set_sensitive (private->file_chooser, file);
gtk_widget_set_sensitive (private->num_colors, ! file);
gtk_widget_set_sensitive (private->columns, ! file);
gtk_widget_set_sensitive (private->threshold, image);
}
static void
palette_import_grad_callback (GtkWidget *widget,
ImportDialog *private)
{
GimpGradient *gradient;
if (! gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
return;
private->import_type = GRADIENT_IMPORT;
gradient = gimp_context_get_gradient (private->context);
gtk_entry_set_text (GTK_ENTRY (private->entry),
gimp_object_get_name (gradient));
palette_import_set_sensitive (private);
palette_import_make_palette (private);
}
static void
palette_import_image_callback (GtkWidget *widget,
ImportDialog *private)
{
GimpImage *image;
if (! gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
return;
private->import_type = IMAGE_IMPORT;
image = gimp_context_get_image (private->context);
if (! image)
{
GimpContainer *images = private->context->gimp->images;
image = GIMP_IMAGE (gimp_container_get_first_child (images));
}
palette_import_set_sensitive (private);
palette_import_image_changed (private->context, image, private);
}
static void
palette_import_file_callback (GtkWidget *widget,
ImportDialog *private)
{
gchar *filename;
if (! gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
return;
private->import_type = FILE_IMPORT;
filename =
gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (private->file_chooser));
if (filename)
{
gchar *basename = g_filename_display_basename (filename);
/* TODO: strip filename extension */
gtk_entry_set_text (GTK_ENTRY (private->entry), basename);
g_free (basename);
g_free (filename);
}
else
{
gtk_entry_set_text (GTK_ENTRY (private->entry), "");
}
palette_import_set_sensitive (private);
}
static void
palette_import_columns_changed (GimpLabelSpin *columns,
ImportDialog *private)
{
if (private->palette)
gimp_palette_set_columns (private->palette,
ROUND (gimp_label_spin_get_value (columns)));
}
/* functions & callbacks to keep the import dialog uptodate ****************/
static void
palette_import_image_add (GimpContainer *container,
GimpImage *image,
ImportDialog *private)
{
if (! gtk_widget_is_sensitive (private->image_radio))
{
gtk_widget_set_sensitive (private->image_radio, TRUE);
gimp_context_set_image (private->context, image);
}
}
static void
palette_import_image_remove (GimpContainer *container,
GimpImage *image,
ImportDialog *private)
{
if (! gimp_container_get_n_children (private->context->gimp->images))
{
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (private->image_radio)))
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (private->gradient_radio),
TRUE);
gtk_widget_set_sensitive (private->image_radio, FALSE);
}
}
static void
palette_import_make_palette (ImportDialog *private)
{
GimpPalette *palette = NULL;
const gchar *palette_name;
gint n_colors;
gint n_columns;
gint threshold;
palette_name = gtk_entry_get_text (GTK_ENTRY (private->entry));
if (! palette_name || ! strlen (palette_name))
palette_name = _("Untitled");
n_colors = ROUND (gimp_label_spin_get_value (GIMP_LABEL_SPIN (private->num_colors)));
n_columns = ROUND (gimp_label_spin_get_value (GIMP_LABEL_SPIN (private->columns)));
threshold = ROUND (gimp_label_spin_get_value (GIMP_LABEL_SPIN (private->threshold)));
switch (private->import_type)
{
case GRADIENT_IMPORT:
{
GimpGradient *gradient;
gradient = gimp_context_get_gradient (private->context);
palette = gimp_palette_import_from_gradient (gradient,
private->context,
FALSE,
GIMP_GRADIENT_BLEND_RGB_PERCEPTUAL,
palette_name,
n_colors);
}
break;
case IMAGE_IMPORT:
{
GimpImage *image = gimp_context_get_image (private->context);
gboolean sample_merged;
gboolean selection_only;
sample_merged =
gtk_toggle_button_get_active
(GTK_TOGGLE_BUTTON (private->sample_merged_toggle));
selection_only =
gtk_toggle_button_get_active
(GTK_TOGGLE_BUTTON (private->selection_only_toggle));
if (gimp_image_get_base_type (image) == GIMP_INDEXED)
{
palette = gimp_palette_import_from_indexed_image (image,
private->context,
palette_name);
}
else if (sample_merged)
{
palette = gimp_palette_import_from_image (image,
private->context,
palette_name,
n_colors,
threshold,
selection_only);
}
else
{
GList *drawables;
drawables = gimp_image_get_selected_layers (image);
if (drawables)
palette = gimp_palette_import_from_drawables (drawables,
private->context,
palette_name,
n_colors,
threshold,
selection_only);
}
}
break;
case FILE_IMPORT:
{
GFile *file;
GError *error = NULL;
file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (private->file_chooser));
palette = gimp_palette_import_from_file (private->context,
file,
palette_name, &error);
g_object_unref (file);
if (! palette)
{
gimp_message_literal (private->context->gimp,
G_OBJECT (private->dialog), GIMP_MESSAGE_ERROR,
error->message);
g_error_free (error);
}
else
{
gint columns = gimp_palette_get_columns (palette);
if (columns > 0)
{
n_columns = columns;
gimp_label_spin_set_value (GIMP_LABEL_SPIN (private->columns),
n_columns);
}
}
}
break;
}
if (private->palette)
g_object_unref (private->palette);
private->palette = palette;
if (palette)
{
gimp_palette_set_columns (palette, n_columns);
gimp_view_set_viewable (GIMP_VIEW (private->preview),
GIMP_VIEWABLE (palette));
}
gtk_widget_set_visible (private->no_colors_label,
! (palette &&
gimp_palette_get_n_colors (palette) > 0));
}
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