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gimp/app/gui/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 "gui-types.h"
#include "core/gimp.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpdatafactory.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/gimpcontainermenuimpl.h"
#include "widgets/gimpdnd.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimppreview.h"
#include "widgets/gimpviewabledialog.h"
#include "gradient-select.h"
#include "palette-import-dialog.h"
#include "gimp-intl.h"
#define IMPORT_PREVIEW_SIZE 80
typedef enum
{
GRADIENT_IMPORT,
IMAGE_IMPORT
} ImportType;
typedef struct _ImportDialog ImportDialog;
struct _ImportDialog
{
GtkWidget *dialog;
ImportType import_type;
GimpContext *context;
GimpPalette *palette;
GradientSelect *gradient_select;
GtkWidget *gradient_menu;
GtkWidget *image_menu;
GtkWidget *entry;
GtkWidget *image_radio;
GtkWidget *gradient_radio;
GtkAdjustment *threshold;
GtkAdjustment *num_colors;
GtkAdjustment *columns;
GtkWidget *preview;
};
static ImportDialog * palette_import_dialog_new (Gimp *gimp);
static void palette_import_close_callback (GtkWidget *widget,
ImportDialog *import_dialog);
static void palette_import_import_callback (GtkWidget *widget,
ImportDialog *import_dialog);
static void palette_import_gradient_changed (GimpContext *context,
GimpGradient *gradient,
ImportDialog *import_dialog);
static void palette_import_image_changed (GimpContext *context,
GimpImage *gimage,
ImportDialog *import_dialog);
static void import_dialog_drop_callback (GtkWidget *widget,
GimpViewable *viewable,
gpointer data);
static void palette_import_grad_callback (GtkWidget *widget,
ImportDialog *import_dialog);
static void palette_import_image_callback (GtkWidget *widget,
ImportDialog *import_dialog);
static void palette_import_columns_changed (GtkAdjustment *adjustment,
ImportDialog *import_dialog);
static void palette_import_image_add (GimpContainer *container,
GimpImage *gimage,
ImportDialog *import_dialog);
static void palette_import_image_remove (GimpContainer *container,
GimpImage *gimage,
ImportDialog *import_dialog);
static void palette_import_make_palette (ImportDialog *import_dialog);
static ImportDialog *the_import_dialog = NULL;
/* public functions */
void
palette_import_dialog_show (Gimp *gimp)
{
g_return_if_fail (GIMP_IS_GIMP (gimp));
if (! the_import_dialog)
the_import_dialog = palette_import_dialog_new (gimp);
gtk_window_present (GTK_WINDOW (the_import_dialog->dialog));
}
void
palette_import_dialog_destroy (void)
{
if (the_import_dialog)
palette_import_close_callback (NULL, the_import_dialog);
}
/* private functions */
/* the palette import dialog constructor ***********************************/
static ImportDialog *
palette_import_dialog_new (Gimp *gimp)
{
ImportDialog *import_dialog;
GimpGradient *gradient;
GtkWidget *main_hbox;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *abox;
GtkWidget *menu;
GSList *group;
gradient = gimp_context_get_gradient (gimp_get_user_context (gimp));
import_dialog = g_new0 (ImportDialog, 1);
import_dialog->import_type = GRADIENT_IMPORT;
import_dialog->context = gimp_context_new (gimp, "Palette Import",
gimp_get_user_context (gimp));
import_dialog->dialog =
gimp_viewable_dialog_new (NULL, _("Import Palette"), "import_palette",
GTK_STOCK_CONVERT,
_("Import a New Palette"),
gimp_standard_help_func,
GIMP_HELP_PALETTE_IMPORT,
GTK_STOCK_CANCEL, palette_import_close_callback,
import_dialog, NULL, NULL, FALSE, TRUE,
_("_Import"), palette_import_import_callback,
import_dialog, NULL, NULL, TRUE, FALSE,
NULL);
gimp_dnd_viewable_dest_add (import_dialog->dialog,
GIMP_TYPE_GRADIENT,
import_dialog_drop_callback,
import_dialog);
gimp_dnd_viewable_dest_add (import_dialog->dialog,
GIMP_TYPE_IMAGE,
import_dialog_drop_callback,
import_dialog);
main_hbox = gtk_hbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (main_hbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (import_dialog->dialog)->vbox),
main_hbox);
gtk_widget_show (main_hbox);
vbox = gtk_vbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (main_hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
/* The "Source" frame */
frame = gtk_frame_new (_("Select Source"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
table = gtk_table_new (2, 2, FALSE);
gtk_container_set_border_width (GTK_CONTAINER (table), 4);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
import_dialog->gradient_radio =
gtk_radio_button_new_with_mnemonic (NULL, _("_Gradient"));
gtk_table_attach_defaults (GTK_TABLE (table), import_dialog->gradient_radio,
0, 1, 0, 1);
gtk_widget_show (import_dialog->gradient_radio);
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (import_dialog->gradient_radio));
g_signal_connect (import_dialog->gradient_radio, "toggled",
G_CALLBACK (palette_import_grad_callback),
import_dialog);
import_dialog->image_radio =
gtk_radio_button_new_with_mnemonic (group, _("I_mage"));
gtk_table_attach_defaults (GTK_TABLE (table), import_dialog->image_radio,
0, 1, 1, 2);
gtk_widget_show (import_dialog->image_radio);
g_signal_connect (import_dialog->image_radio, "toggled",
G_CALLBACK (palette_import_image_callback),
import_dialog);
gtk_widget_set_sensitive (import_dialog->image_radio,
gimp_container_num_children (gimp->images) > 0);
/* The gradient menu */
import_dialog->gradient_menu = gtk_option_menu_new ();
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
NULL, 1.0, 0.5,
import_dialog->gradient_menu, 1, FALSE);
menu = gimp_container_menu_new (gimp->gradient_factory->container,
import_dialog->context, 24, 1);
gtk_option_menu_set_menu (GTK_OPTION_MENU (import_dialog->gradient_menu),
menu);
gtk_widget_show (menu);
/* The image menu */
import_dialog->image_menu = gtk_option_menu_new ();
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
NULL, 1.0, 0.5,
import_dialog->image_menu, 1, FALSE);
menu = gimp_container_menu_new (gimp->images, import_dialog->context, 24, 1);
gtk_option_menu_set_menu (GTK_OPTION_MENU (import_dialog->image_menu), menu);
gtk_widget_show (menu);
{
gint focus_line_width;
gint focus_padding;
gint ythickness;
gint ysize;
gtk_widget_style_get (import_dialog->gradient_menu,
"focus_line_width", &focus_line_width,
"focus_padding", &focus_padding,
NULL);
ythickness = import_dialog->gradient_menu->style->ythickness;
ysize = 24 + (2 * (1 /* CHILD_SPACING */ +
ythickness +
focus_padding +
focus_line_width));
gtk_widget_set_size_request (import_dialog->gradient_menu, -1, ysize);
gtk_widget_set_size_request (import_dialog->image_menu, -1, ysize);
}
/* The "Import" frame */
frame = gtk_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_container_set_border_width (GTK_CONTAINER (table), 4);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
/* The source's name */
import_dialog->entry = gtk_entry_new ();
gtk_entry_set_text (GTK_ENTRY (import_dialog->entry),
gradient ? GIMP_OBJECT (gradient)->name : _("New Import"));
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Palette _Name:"), 1.0, 0.5,
import_dialog->entry, 2, FALSE);
/* The # of colors */
import_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 (import_dialog->num_colors,
"value_changed",
G_CALLBACK (palette_import_make_palette),
import_dialog);
/* The columns */
import_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 (import_dialog->columns, "value_changed",
G_CALLBACK (palette_import_columns_changed),
import_dialog);
/* The interval */
import_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));
gimp_scale_entry_set_sensitive (GTK_OBJECT (import_dialog->threshold), FALSE);
g_signal_connect_swapped (import_dialog->threshold, "value_changed",
G_CALLBACK (palette_import_make_palette),
import_dialog);
/* The "Preview" frame */
frame = gtk_frame_new (_("Preview"));
gtk_box_pack_start (GTK_BOX (main_hbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_container_set_border_width (GTK_CONTAINER (abox), 4);
gtk_container_add (GTK_CONTAINER (frame), abox);
gtk_widget_show (abox);
import_dialog->preview = gimp_preview_new_full_by_types (GIMP_TYPE_PREVIEW,
GIMP_TYPE_PALETTE,
192, 192, 1,
TRUE, FALSE, FALSE);
gtk_container_add (GTK_CONTAINER (abox), import_dialog->preview);
gtk_widget_show (import_dialog->preview);
/* keep the dialog up-to-date */
g_signal_connect (gimp->images, "add",
G_CALLBACK (palette_import_image_add),
import_dialog);
g_signal_connect (gimp->images, "remove",
G_CALLBACK (palette_import_image_remove),
import_dialog);
g_signal_connect (import_dialog->context, "gradient_changed",
G_CALLBACK (palette_import_gradient_changed),
import_dialog);
g_signal_connect (import_dialog->context, "image_changed",
G_CALLBACK (palette_import_image_changed),
import_dialog);
palette_import_make_palette (import_dialog);
return import_dialog;
}
/* the palette import action area callbacks ********************************/
static void
palette_import_close_callback (GtkWidget *widget,
ImportDialog *import_dialog)
{
Gimp *gimp;
if (import_dialog->gradient_select)
gradient_select_free (import_dialog->gradient_select);
gimp = import_dialog->context->gimp;
g_signal_handlers_disconnect_by_func (gimp->images,
palette_import_image_add,
import_dialog);
g_signal_handlers_disconnect_by_func (gimp->images,
palette_import_image_remove,
import_dialog);
g_object_unref (import_dialog->context);
if (import_dialog->palette)
g_object_unref (import_dialog->palette);
gtk_widget_destroy (import_dialog->dialog);
g_free (import_dialog);
the_import_dialog = NULL;
}
static void
palette_import_import_callback (GtkWidget *widget,
ImportDialog *import_dialog)
{
if (import_dialog->palette)
gimp_container_add (import_dialog->context->gimp->palette_factory->container,
GIMP_OBJECT (import_dialog->palette));
palette_import_close_callback (NULL, import_dialog);
}
/* functions to create & update the import dialog's gradient selection *****/
static void
palette_import_gradient_changed (GimpContext *context,
GimpGradient *gradient,
ImportDialog *import_dialog)
{
if (gradient && import_dialog->import_type == GRADIENT_IMPORT)
{
gtk_entry_set_text (GTK_ENTRY (import_dialog->entry),
GIMP_OBJECT (gradient)->name);
palette_import_make_palette (import_dialog);
}
}
static void
palette_import_image_changed (GimpContext *context,
GimpImage *gimage,
ImportDialog *import_dialog)
{
if (gimage && import_dialog->import_type == IMAGE_IMPORT)
{
gchar *basename;
gchar *label;
basename = file_utils_uri_to_utf8_basename (gimp_image_get_uri (gimage));
label = g_strdup_printf ("%s-%d", basename, gimp_image_get_ID (gimage));
g_free (basename);
gtk_entry_set_text (GTK_ENTRY (import_dialog->entry), label);
g_free (label);
palette_import_make_palette (import_dialog);
}
}
static void
import_dialog_drop_callback (GtkWidget *widget,
GimpViewable *viewable,
gpointer data)
{
ImportDialog *import_dialog;
import_dialog = (ImportDialog *) data;
gimp_context_set_by_type (import_dialog->context,
G_TYPE_FROM_INSTANCE (viewable),
GIMP_OBJECT (viewable));
if (GIMP_IS_GRADIENT (viewable) &&
import_dialog->import_type != GRADIENT_IMPORT)
{
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (import_dialog->gradient_radio),
TRUE);
}
else if (GIMP_IS_IMAGE (viewable) &&
import_dialog->import_type != IMAGE_IMPORT)
{
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (import_dialog->image_radio),
TRUE);
}
}
/* the import source menu item callbacks ***********************************/
static void
palette_import_grad_callback (GtkWidget *widget,
ImportDialog *import_dialog)
{
GimpGradient *gradient;
gradient = gimp_context_get_gradient (import_dialog->context);
import_dialog->import_type = GRADIENT_IMPORT;
gtk_widget_set_sensitive (import_dialog->image_menu, FALSE);
gtk_widget_set_sensitive (import_dialog->gradient_menu, TRUE);
gtk_entry_set_text (GTK_ENTRY (import_dialog->entry),
GIMP_OBJECT (gradient)->name);
gimp_scale_entry_set_sensitive (GTK_OBJECT (import_dialog->threshold), FALSE);
palette_import_make_palette (import_dialog);
}
static void
palette_import_image_callback (GtkWidget *widget,
ImportDialog *import_dialog)
{
GimpImage *gimage;
gimage = gimp_context_get_image (import_dialog->context);
if (! gimage)
{
gimage = (GimpImage *)
gimp_container_get_child_by_index (import_dialog->context->gimp->images,
0);
}
import_dialog->import_type = IMAGE_IMPORT;
gtk_widget_set_sensitive (import_dialog->gradient_menu, FALSE);
gtk_widget_set_sensitive (import_dialog->image_menu, TRUE);
palette_import_image_changed (import_dialog->context, gimage, import_dialog);
gimp_scale_entry_set_sensitive (GTK_OBJECT (import_dialog->threshold), TRUE);
}
static void
palette_import_columns_changed (GtkAdjustment *adjustment,
ImportDialog *import_dialog)
{
if (import_dialog->palette)
gimp_palette_set_n_columns (import_dialog->palette,
ROUND (adjustment->value));
}
/* functions & callbacks to keep the import dialog uptodate ****************/
static void
palette_import_image_add (GimpContainer *container,
GimpImage *gimage,
ImportDialog *import_dialog)
{
if (! GTK_WIDGET_IS_SENSITIVE (import_dialog->image_radio))
{
gtk_widget_set_sensitive (import_dialog->image_radio, TRUE);
gimp_context_set_image (import_dialog->context, gimage);
}
}
static void
palette_import_image_remove (GimpContainer *container,
GimpImage *gimage,
ImportDialog *import_dialog)
{
if (! gimp_container_num_children (import_dialog->context->gimp->images))
{
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (import_dialog->gradient_radio),
TRUE);
gtk_widget_set_sensitive (import_dialog->image_radio, FALSE);
}
}
static void
palette_import_make_palette (ImportDialog *import_dialog)
{
GimpPalette *palette = NULL;
const gchar *entry;
gchar *palette_name;
GimpGradient *gradient;
GimpImage *gimage;
gint n_colors;
gint n_columns;
gint threshold;
entry = gtk_entry_get_text (GTK_ENTRY (import_dialog->entry));
if (entry && strlen (entry))
palette_name = g_strdup (entry);
else
palette_name = g_strdup (_("Untitled"));
gradient = gimp_context_get_gradient (import_dialog->context);
gimage = gimp_context_get_image (import_dialog->context);
n_colors = ROUND (import_dialog->num_colors->value);
n_columns = ROUND (import_dialog->columns->value);
threshold = ROUND (import_dialog->threshold->value);
switch (import_dialog->import_type)
{
case GRADIENT_IMPORT:
palette = gimp_palette_import_from_gradient (gradient,
FALSE,
palette_name,
n_colors);
break;
case IMAGE_IMPORT:
if (gimp_image_base_type (gimage) == GIMP_INDEXED)
{
palette =
gimp_palette_import_from_indexed_image (gimage,
palette_name);
}
else
{
palette = gimp_palette_import_from_image (gimage,
palette_name,
n_colors,
threshold);
}
break;
}
g_free (palette_name);
if (palette)
{
if (import_dialog->palette)
g_object_unref (import_dialog->palette);
palette->n_columns = n_columns;
gimp_preview_set_viewable (GIMP_PREVIEW (import_dialog->preview),
GIMP_VIEWABLE (palette));
import_dialog->palette = palette;
}
}
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