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gimp/app/dialogs/palette-import-dialog.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 "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 "file/file-utils.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"
#define IMPORT_PREVIEW_SIZE 80
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;
GtkAdjustment *num_colors;
GtkAdjustment *columns;
GtkAdjustment *threshold;
GtkWidget *preview;
GtkWidget *no_colors_label;
};
static void palette_import_free (ImportDialog *dialog);
static void palette_import_response (GtkWidget *widget,
gint response_id,
ImportDialog *dialog);
static void palette_import_gradient_changed (GimpContext *context,
GimpGradient *gradient,
ImportDialog *dialog);
static void palette_import_image_changed (GimpContext *context,
GimpImage *image,
ImportDialog *dialog);
static void palette_import_layer_changed (GimpImage *image,
ImportDialog *dialog);
static void palette_import_mask_changed (GimpImage *image,
ImportDialog *dialog);
static void palette_import_filename_changed (GtkFileChooser *button,
ImportDialog *dialog);
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 *dialog);
static void palette_import_image_callback (GtkWidget *widget,
ImportDialog *dialog);
static void palette_import_file_callback (GtkWidget *widget,
ImportDialog *dialog);
static void palette_import_columns_changed (GtkAdjustment *adjustment,
ImportDialog *dialog);
static void palette_import_image_add (GimpContainer *container,
GimpImage *image,
ImportDialog *dialog);
static void palette_import_image_remove (GimpContainer *container,
GimpImage *image,
ImportDialog *dialog);
static void palette_import_make_palette (ImportDialog *dialog);
/* public functions */
GtkWidget *
palette_import_dialog_new (GimpContext *context)
{
ImportDialog *dialog;
GimpGradient *gradient;
GtkWidget *button;
GtkWidget *main_hbox;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *abox;
GtkSizeGroup *size_group;
GSList *group = NULL;
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
gradient = gimp_context_get_gradient (context);
dialog = g_new0 (ImportDialog, 1);
dialog->import_type = GRADIENT_IMPORT;
dialog->context = gimp_context_new (context->gimp, "Palette Import",
context);
dialog->dialog = gimp_dialog_new (_("Import a New Palette"),
"gimp-palette-import", NULL, 0,
gimp_standard_help_func,
GIMP_HELP_PALETTE_IMPORT,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
NULL);
button = gtk_dialog_add_button (GTK_DIALOG (dialog->dialog),
_("_Import"), GTK_RESPONSE_OK);
gtk_button_set_image (GTK_BUTTON (button),
gtk_image_new_from_stock (GTK_STOCK_CONVERT,
GTK_ICON_SIZE_BUTTON));
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog->dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
g_object_set_data_full (G_OBJECT (dialog->dialog), "palette-import-dialog",
dialog, (GDestroyNotify) palette_import_free);
g_signal_connect (dialog->dialog, "response",
G_CALLBACK (palette_import_response),
dialog);
gimp_dnd_viewable_dest_add (dialog->dialog,
GIMP_TYPE_GRADIENT,
import_dialog_drop_callback,
dialog);
gimp_dnd_viewable_dest_add (dialog->dialog,
GIMP_TYPE_IMAGE,
import_dialog_drop_callback,
dialog);
main_hbox = gtk_hbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_hbox), 12);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog->dialog)->vbox),
main_hbox);
gtk_widget_show (main_hbox);
vbox = gtk_vbox_new (FALSE, 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);
table = gtk_table_new (5, 2, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
dialog->gradient_radio =
gtk_radio_button_new_with_mnemonic (group, _("_Gradient"));
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (dialog->gradient_radio));
gtk_table_attach (GTK_TABLE (table), dialog->gradient_radio,
0, 1, 0, 1, GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (dialog->gradient_radio);
g_signal_connect (dialog->gradient_radio, "toggled",
G_CALLBACK (palette_import_grad_callback),
dialog);
dialog->image_radio =
gtk_radio_button_new_with_mnemonic (group, _("I_mage"));
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (dialog->image_radio));
gtk_table_attach (GTK_TABLE (table), dialog->image_radio,
0, 1, 1, 2, GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (dialog->image_radio);
g_signal_connect (dialog->image_radio, "toggled",
G_CALLBACK (palette_import_image_callback),
dialog);
gtk_widget_set_sensitive (dialog->image_radio,
! gimp_container_is_empty (context->gimp->images));
dialog->sample_merged_toggle =
gtk_check_button_new_with_mnemonic (_("Sample _Merged"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (dialog->sample_merged_toggle),
TRUE);
gtk_table_attach (GTK_TABLE (table), dialog->sample_merged_toggle,
1, 2, 2, 3, GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (dialog->sample_merged_toggle);
g_signal_connect_swapped (dialog->sample_merged_toggle, "toggled",
G_CALLBACK (palette_import_make_palette),
dialog);
dialog->selection_only_toggle =
gtk_check_button_new_with_mnemonic (_("_Selected Pixels only"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (dialog->selection_only_toggle),
FALSE);
gtk_table_attach (GTK_TABLE (table), dialog->selection_only_toggle,
1, 2, 3, 4, GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (dialog->selection_only_toggle);
g_signal_connect_swapped (dialog->selection_only_toggle, "toggled",
G_CALLBACK (palette_import_make_palette),
dialog);
dialog->file_radio =
gtk_radio_button_new_with_mnemonic (group, _("Palette _file"));
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (dialog->image_radio));
gtk_table_attach (GTK_TABLE (table), dialog->file_radio,
0, 1, 4, 5, GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (dialog->file_radio);
g_signal_connect (dialog->file_radio, "toggled",
G_CALLBACK (palette_import_file_callback),
dialog);
size_group = gtk_size_group_new (GTK_SIZE_GROUP_VERTICAL);
/* The gradient menu */
dialog->gradient_combo =
gimp_container_combo_box_new (context->gimp->gradient_factory->container,
dialog->context, 24, 1);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
NULL, 0.0, 0.5, dialog->gradient_combo, 1, FALSE);
gtk_size_group_add_widget (size_group, dialog->gradient_combo);
/* The image menu */
dialog->image_combo =
gimp_container_combo_box_new (context->gimp->images, dialog->context,
24, 1);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
NULL, 0.0, 0.5, dialog->image_combo, 1, FALSE);
gtk_size_group_add_widget (size_group, dialog->image_combo);
/* Palette file name entry */
dialog->file_chooser = gtk_file_chooser_button_new (_("Select Palette File"),
GTK_FILE_CHOOSER_ACTION_OPEN);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 4,
NULL, 0.0, 0.5, dialog->file_chooser, 1, FALSE);
gtk_size_group_add_widget (size_group, dialog->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);
table = gtk_table_new (4, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
/* The source's name */
dialog->entry = gtk_entry_new ();
gtk_entry_set_text (GTK_ENTRY (dialog->entry),
gradient ?
GIMP_OBJECT (gradient)->name : _("New import"));
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Palette _name:"), 0.0, 0.5,
dialog->entry, 2, FALSE);
/* The # of colors */
dialog->num_colors =
GTK_ADJUSTMENT (gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("N_umber of colors:"), -1, 5,
256, 2, 10000, 1, 10, 0,
TRUE, 0.0, 0.0,
NULL, NULL));
g_signal_connect_swapped (dialog->num_colors,
"value-changed",
G_CALLBACK (palette_import_make_palette),
dialog);
/* The columns */
dialog->columns =
GTK_ADJUSTMENT (gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
_("C_olumns:"), -1, 5,
16, 0, 64, 1, 8, 0,
TRUE, 0.0, 0.0,
NULL, NULL));
g_signal_connect (dialog->columns, "value-changed",
G_CALLBACK (palette_import_columns_changed),
dialog);
/* The interval */
dialog->threshold =
GTK_ADJUSTMENT (gimp_scale_entry_new (GTK_TABLE (table), 0, 3,
_("I_nterval:"), -1, 5,
1, 1, 128, 1, 8, 0,
TRUE, 0.0, 0.0,
NULL, NULL));
g_signal_connect_swapped (dialog->threshold, "value-changed",
G_CALLBACK (palette_import_make_palette),
dialog);
/* 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_vbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
abox = gtk_alignment_new (0.0, 0.0, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (vbox), abox, FALSE, FALSE, 0);
gtk_widget_show (abox);
dialog->preview = gimp_view_new_full_by_types (dialog->context,
GIMP_TYPE_VIEW,
GIMP_TYPE_PALETTE,
192, 192, 1,
TRUE, FALSE, FALSE);
gtk_container_add (GTK_CONTAINER (abox), dialog->preview);
gtk_widget_show (dialog->preview);
dialog->no_colors_label =
gtk_label_new (_("The selected source contains no colors."));
gtk_widget_set_size_request (dialog->no_colors_label, 194, -1);
gtk_label_set_line_wrap (GTK_LABEL (dialog->no_colors_label), TRUE);
gimp_label_set_attributes (GTK_LABEL (dialog->no_colors_label),
PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
-1);
gtk_box_pack_start (GTK_BOX (vbox), dialog->no_colors_label, FALSE, FALSE, 0);
gtk_widget_show (dialog->no_colors_label);
/* keep the dialog up-to-date */
g_signal_connect (context->gimp->images, "add",
G_CALLBACK (palette_import_image_add),
dialog);
g_signal_connect (context->gimp->images, "remove",
G_CALLBACK (palette_import_image_remove),
dialog);
g_signal_connect (dialog->context, "gradient-changed",
G_CALLBACK (palette_import_gradient_changed),
dialog);
g_signal_connect (dialog->context, "image-changed",
G_CALLBACK (palette_import_image_changed),
dialog);
g_signal_connect (dialog->file_chooser, "selection-changed",
G_CALLBACK (palette_import_filename_changed),
dialog);
palette_import_grad_callback (dialog->gradient_radio, dialog);
return dialog->dialog;
}
/* private functions */
static void
palette_import_free (ImportDialog *dialog)
{
Gimp *gimp = dialog->context->gimp;
g_signal_handlers_disconnect_by_func (gimp->images,
palette_import_image_add,
dialog);
g_signal_handlers_disconnect_by_func (gimp->images,
palette_import_image_remove,
dialog);
if (dialog->palette)
g_object_unref (dialog->palette);
g_object_unref (dialog->context);
g_free (dialog);
}
/* the palette import response callback ************************************/
static void
palette_import_response (GtkWidget *widget,
gint response_id,
ImportDialog *dialog)
{
Gimp *gimp = dialog->context->gimp;
palette_import_image_changed (dialog->context, NULL, dialog);
if (dialog->palette)
{
if (response_id == GTK_RESPONSE_OK)
{
const gchar *name = gtk_entry_get_text (GTK_ENTRY (dialog->entry));
if (name && *name)
gimp_object_set_name (GIMP_OBJECT (dialog->palette), name);
gimp_container_add (gimp->palette_factory->container,
GIMP_OBJECT (dialog->palette));
}
}
gtk_widget_destroy (dialog->dialog);
}
/* functions to create & update the import dialog's gradient selection *****/
static void
palette_import_gradient_changed (GimpContext *context,
GimpGradient *gradient,
ImportDialog *dialog)
{
if (gradient && dialog->import_type == GRADIENT_IMPORT)
{
gtk_entry_set_text (GTK_ENTRY (dialog->entry),
GIMP_OBJECT (gradient)->name);
palette_import_make_palette (dialog);
}
}
static void
palette_import_image_changed (GimpContext *context,
GimpImage *image,
ImportDialog *dialog)
{
if (dialog->image)
{
g_signal_handlers_disconnect_by_func (dialog->image,
palette_import_layer_changed,
dialog);
g_signal_handlers_disconnect_by_func (dialog->image,
palette_import_mask_changed,
dialog);
}
dialog->image = image;
if (dialog->import_type == IMAGE_IMPORT)
{
gboolean sensitive = FALSE;
if (image)
{
gchar *name;
gchar *label;
name = file_utils_uri_display_basename (gimp_image_get_uri (image));
label = g_strdup_printf ("%s-%d", name, gimp_image_get_ID (image));
g_free (name);
gtk_entry_set_text (GTK_ENTRY (dialog->entry), label);
g_free (label);
palette_import_make_palette (dialog);
if (gimp_image_base_type (image) != GIMP_INDEXED)
sensitive = TRUE;
}
gtk_widget_set_sensitive (dialog->sample_merged_toggle, sensitive);
gtk_widget_set_sensitive (dialog->selection_only_toggle, sensitive);
gimp_scale_entry_set_sensitive (GTK_OBJECT (dialog->threshold),
sensitive);
gimp_scale_entry_set_sensitive (GTK_OBJECT (dialog->num_colors),
sensitive);
}
if (dialog->image)
{
g_signal_connect (dialog->image, "active-layer-changed",
G_CALLBACK (palette_import_layer_changed),
dialog);
g_signal_connect (dialog->image, "mask-changed",
G_CALLBACK (palette_import_mask_changed),
dialog);
}
}
static void
palette_import_layer_changed (GimpImage *image,
ImportDialog *dialog)
{
if (dialog->import_type == IMAGE_IMPORT &&
! gtk_toggle_button_get_active
(GTK_TOGGLE_BUTTON (dialog->sample_merged_toggle)))
{
palette_import_make_palette (dialog);
}
}
static void
palette_import_mask_changed (GimpImage *image,
ImportDialog *dialog)
{
if (dialog->import_type == IMAGE_IMPORT &&
gtk_toggle_button_get_active
(GTK_TOGGLE_BUTTON (dialog->selection_only_toggle)))
{
palette_import_make_palette (dialog);
}
}
static void
palette_import_filename_changed (GtkFileChooser *button,
ImportDialog *dialog)
{
gchar *filename;
if (dialog->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 (dialog->entry), basename);
g_free (basename);
}
else
{
gtk_entry_set_text (GTK_ENTRY (dialog->entry), "");
}
g_free (filename);
palette_import_make_palette (dialog);
}
static void
import_dialog_drop_callback (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data)
{
ImportDialog *dialog = data;
gimp_context_set_by_type (dialog->context,
G_TYPE_FROM_INSTANCE (viewable),
GIMP_OBJECT (viewable));
if (GIMP_IS_GRADIENT (viewable) &&
dialog->import_type != GRADIENT_IMPORT)
{
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (dialog->gradient_radio),
TRUE);
}
else if (GIMP_IS_IMAGE (viewable) &&
dialog->import_type != IMAGE_IMPORT)
{
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (dialog->image_radio),
TRUE);
}
}
/* the import source menu item callbacks ***********************************/
static void
palette_import_set_sensitive (ImportDialog *dialog)
{
gboolean gradient = (dialog->import_type == GRADIENT_IMPORT);
gboolean image = (dialog->import_type == IMAGE_IMPORT);
gboolean file = (dialog->import_type == FILE_IMPORT);
gtk_widget_set_sensitive (dialog->gradient_combo, gradient);
gtk_widget_set_sensitive (dialog->image_combo, image);
gtk_widget_set_sensitive (dialog->sample_merged_toggle, image);
gtk_widget_set_sensitive (dialog->selection_only_toggle, image);
gtk_widget_set_sensitive (dialog->file_chooser, file);
gimp_scale_entry_set_sensitive (GTK_OBJECT (dialog->num_colors), ! file);
gimp_scale_entry_set_sensitive (GTK_OBJECT (dialog->columns), ! file);
gimp_scale_entry_set_sensitive (GTK_OBJECT (dialog->threshold), image);
}
static void
palette_import_grad_callback (GtkWidget *widget,
ImportDialog *dialog)
{
GimpGradient *gradient;
if (! gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
return;
dialog->import_type = GRADIENT_IMPORT;
gradient = gimp_context_get_gradient (dialog->context);
gtk_entry_set_text (GTK_ENTRY (dialog->entry),
GIMP_OBJECT (gradient)->name);
palette_import_set_sensitive (dialog);
palette_import_make_palette (dialog);
}
static void
palette_import_image_callback (GtkWidget *widget,
ImportDialog *dialog)
{
GimpImage *image;
if (! gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
return;
dialog->import_type = IMAGE_IMPORT;
image = gimp_context_get_image (dialog->context);
if (! image)
image = (GimpImage *)
gimp_container_get_child_by_index (dialog->context->gimp->images, 0);
palette_import_set_sensitive (dialog);
palette_import_image_changed (dialog->context, image, dialog);
}
static void
palette_import_file_callback (GtkWidget *widget,
ImportDialog *dialog)
{
gchar *filename;
if (! gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
return;
dialog->import_type = FILE_IMPORT;
filename =
gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog->file_chooser));
if (filename)
{
gchar *basename = g_filename_display_basename (filename);
/* TODO: strip filename extension */
gtk_entry_set_text (GTK_ENTRY (dialog->entry), basename);
g_free (basename);
g_free (filename);
}
else
{
gtk_entry_set_text (GTK_ENTRY (dialog->entry), "");
}
palette_import_set_sensitive (dialog);
}
static void
palette_import_columns_changed (GtkAdjustment *adj,
ImportDialog *dialog)
{
if (dialog->palette)
gimp_palette_set_columns (dialog->palette, ROUND (adj->value));
}
/* functions & callbacks to keep the import dialog uptodate ****************/
static void
palette_import_image_add (GimpContainer *container,
GimpImage *image,
ImportDialog *dialog)
{
if (! GTK_WIDGET_IS_SENSITIVE (dialog->image_radio))
{
gtk_widget_set_sensitive (dialog->image_radio, TRUE);
gimp_context_set_image (dialog->context, image);
}
}
static void
palette_import_image_remove (GimpContainer *container,
GimpImage *image,
ImportDialog *dialog)
{
if (! gimp_container_num_children (dialog->context->gimp->images))
{
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (dialog->image_radio)))
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (dialog->gradient_radio),
TRUE);
gtk_widget_set_sensitive (dialog->image_radio, FALSE);
}
}
static void
palette_import_make_palette (ImportDialog *dialog)
{
GimpPalette *palette = NULL;
const gchar *palette_name;
gint n_colors;
gint n_columns;
gint threshold;
palette_name = gtk_entry_get_text (GTK_ENTRY (dialog->entry));
if (! palette_name || ! strlen (palette_name))
palette_name = _("Untitled");
n_colors = ROUND (dialog->num_colors->value);
n_columns = ROUND (dialog->columns->value);
threshold = ROUND (dialog->threshold->value);
switch (dialog->import_type)
{
case GRADIENT_IMPORT:
{
GimpGradient *gradient;
gradient = gimp_context_get_gradient (dialog->context);
palette = gimp_palette_import_from_gradient (gradient,
dialog->context,
FALSE,
palette_name,
n_colors);
}
break;
case IMAGE_IMPORT:
{
GimpImage *image = gimp_context_get_image (dialog->context);
gboolean sample_merged;
gboolean selection_only;
sample_merged =
gtk_toggle_button_get_active
(GTK_TOGGLE_BUTTON (dialog->sample_merged_toggle));
selection_only =
gtk_toggle_button_get_active
(GTK_TOGGLE_BUTTON (dialog->selection_only_toggle));
if (gimp_image_base_type (image) == GIMP_INDEXED)
{
palette = gimp_palette_import_from_indexed_image (image,
palette_name);
}
else if (sample_merged)
{
palette = gimp_palette_import_from_image (image,
palette_name,
n_colors,
threshold,
selection_only);
}
else
{
GimpDrawable *drawable;
drawable = GIMP_DRAWABLE (gimp_image_get_active_layer (image));
palette = gimp_palette_import_from_drawable (drawable,
palette_name,
n_colors,
threshold,
selection_only);
}
}
break;
case FILE_IMPORT:
{
gchar *filename;
GError *error = NULL;
filename =
gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog->file_chooser));
palette = gimp_palette_import_from_file (filename,
palette_name, &error);
g_free (filename);
if (! palette)
{
gimp_show_message_dialog (dialog->dialog, GTK_MESSAGE_ERROR,
error->message);
g_error_free (error);
}
}
break;
}
if (palette)
{
if (dialog->palette)
g_object_unref (dialog->palette);
palette->n_columns = n_columns;
gimp_view_set_viewable (GIMP_VIEW (dialog->preview),
GIMP_VIEWABLE (palette));
dialog->palette = palette;
}
if (dialog->palette && dialog->palette->n_colors > 0)
gtk_widget_hide (dialog->no_colors_label);
else
gtk_widget_show (dialog->no_colors_label);
}
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