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gimp/app/dialogs/convert-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 <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "gui-types.h"
#include "core/gimp.h"
#include "core/gimpdatafactory.h"
#include "core/gimpimage.h"
#include "core/gimpimage-convert.h"
#include "core/gimplist.h"
#include "core/gimppalette.h"
#include "display/gimpdisplay-foreach.h"
#include "tools/gimptool.h"
#include "tools/tool_manager.h"
#include "palette-select.h"
#include "libgimp/gimpintl.h"
typedef struct
{
GtkWidget *shell;
GtkWidget *custom_palette_button;
GimpImage *gimage;
PaletteSelect *palette_select;
gint nodither_flag;
gint fsdither_flag;
gint fslowbleeddither_flag;
gint fixeddither_flag;
gint alphadither; /* flag */
gint remdups; /* flag */
gint num_cols;
gint palette;
gint makepal_flag;
gint webpal_flag;
gint custompal_flag;
gint monopal_flag;
gint reusepal_flag;
} IndexedDialog;
static void indexed_ok_callback (GtkWidget *widget,
gpointer data);
static void indexed_cancel_callback (GtkWidget *widget,
gpointer data);
static void indexed_custom_palette_button_callback (GtkWidget *widget,
gpointer data);
static void indexed_palette_select_destroy_callback (GtkWidget *widget,
gpointer data);
static GtkWidget * build_palette_button (Gimp *gimp);
static gboolean UserHasWebPal = FALSE;
static GimpPalette *theCustomPalette = NULL;
/* Defaults */
static gint snum_cols = 256;
static gboolean sfsdither_flag = TRUE;
static gboolean sfslowbleeddither_flag = TRUE;
static gboolean snodither_flag = FALSE;
static gboolean sfixeddither_flag = FALSE;
static gboolean smakepal_flag = TRUE;
static gboolean salphadither_flag = FALSE;
static gboolean sremdups_flag = TRUE;
static gboolean swebpal_flag = FALSE;
static gboolean scustompal_flag = FALSE;
static gboolean smonopal_flag = FALSE;
static gboolean sreusepal_flag = FALSE;
void
convert_to_rgb (GimpImage *gimage)
{
gimp_image_convert (gimage, RGB, 0, 0, 0, 0, 0, NULL);
gdisplays_flush ();
}
void
convert_to_grayscale (GimpImage* gimage)
{
gimp_image_convert (gimage, GRAY, 0, 0, 0, 0, 0, NULL);
gdisplays_flush ();
}
void
convert_to_indexed (GimpImage *gimage)
{
IndexedDialog *dialog;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *label;
GtkObject *adjustment;
GtkWidget *spinbutton;
GtkWidget *frame;
GtkWidget *custom_frame = NULL;
GtkWidget *toggle;
GSList *group = NULL;
dialog = g_new0 (IndexedDialog, 1);
dialog->gimage = gimage;
dialog->custom_palette_button = NULL;
dialog->palette_select = NULL;
dialog->num_cols = snum_cols;
dialog->nodither_flag = snodither_flag;
dialog->fsdither_flag = sfsdither_flag;
dialog->fslowbleeddither_flag = sfslowbleeddither_flag;
dialog->fixeddither_flag = sfixeddither_flag;
dialog->alphadither = salphadither_flag;
dialog->remdups = sremdups_flag;
dialog->makepal_flag = smakepal_flag;
dialog->webpal_flag = swebpal_flag;
dialog->custompal_flag = scustompal_flag;
dialog->monopal_flag = smonopal_flag;
dialog->reusepal_flag = sreusepal_flag;
dialog->shell =
gimp_dialog_new (_("Indexed Color Conversion"), "indexed_color_conversion",
gimp_standard_help_func,
"dialogs/convert_to_indexed.html",
GTK_WIN_POS_NONE,
FALSE, FALSE, TRUE,
GTK_STOCK_OK, indexed_ok_callback,
dialog, NULL, NULL, TRUE, FALSE,
GTK_STOCK_CANCEL, indexed_cancel_callback,
dialog, NULL, NULL, FALSE, TRUE,
NULL);
main_vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog->shell)->vbox),
main_vbox);
gtk_widget_show (main_vbox);
frame = gtk_frame_new (_("General Palette Options"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
/* 'generate palette' */
hbox = gtk_hbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle =
gtk_radio_button_new_with_label (NULL, _("Generate Optimal Palette:"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
g_signal_connect (G_OBJECT (toggle), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&(dialog->makepal_flag));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->makepal_flag);
gtk_widget_show (toggle);
if (dialog->num_cols == 256)
{
if ((! gimp_image_is_empty (gimage)) &&
GIMP_IMAGE_TYPE_HAS_ALPHA (gimage->base_type))
{
dialog->num_cols = 255;
}
}
spinbutton = gimp_spin_button_new (&adjustment, dialog->num_cols,
2, 256, 1, 5, 0, 1, 0);
gtk_box_pack_end (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
g_signal_connect (G_OBJECT (adjustment), "value_changed",
G_CALLBACK (gimp_int_adjustment_update),
&dialog->num_cols);
label = gtk_label_new (_("# of Colors:"));
gtk_box_pack_end (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
gtk_widget_set_sensitive (GTK_WIDGET (spinbutton), dialog->num_cols);
gtk_widget_set_sensitive (GTK_WIDGET (label), dialog->num_cols);
g_object_set_data (G_OBJECT (toggle), "set_sensitive", spinbutton);
g_object_set_data (G_OBJECT (spinbutton), "set_sensitive", label);
gtk_widget_show (hbox);
/* 'custom' palette from dialog */
dialog->custom_palette_button = build_palette_button (gimage->gimp);
if (dialog->custom_palette_button)
{
/* create the custom_frame here, it'll be added later */
custom_frame = gtk_frame_new (_("Custom Palette Options"));
gtk_container_set_border_width (GTK_CONTAINER (custom_frame), 2);
/* The remove-duplicates toggle */
hbox = gtk_hbox_new (FALSE, 1);
gtk_container_add (GTK_CONTAINER (custom_frame), hbox);
toggle = gtk_check_button_new_with_label (_("Remove Unused Colors from Final Palette"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), dialog->remdups);
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
g_signal_connect (G_OBJECT (toggle), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&dialog->remdups);
/* 'custom' palette from dialog */
hbox = gtk_hbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (group, _("Use Custom Palette:"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
g_signal_connect (G_OBJECT (toggle), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&dialog->custompal_flag);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->custompal_flag);
g_object_set_data (G_OBJECT (toggle), "set_sensitive", custom_frame);
gtk_widget_show (toggle);
g_signal_connect (G_OBJECT (dialog->custom_palette_button), "clicked",
G_CALLBACK (indexed_custom_palette_button_callback),
dialog);
gtk_box_pack_end (GTK_BOX (hbox), dialog->custom_palette_button, TRUE, TRUE, 0);
gtk_widget_show (dialog->custom_palette_button);
gtk_widget_show (hbox);
gtk_widget_set_sensitive (GTK_WIDGET (custom_frame),
dialog->custompal_flag);
gtk_widget_set_sensitive (GTK_WIDGET (dialog->custom_palette_button),
dialog->custompal_flag);
g_object_set_data (G_OBJECT (toggle), "set_sensitive", custom_frame);
g_object_set_data (G_OBJECT (custom_frame), "set_sensitive",
dialog->custom_palette_button);
}
if (! UserHasWebPal)
{
/* 'web palette'
* Only presented as an option to the user if they do not
* already have the 'Web' GIMP palette installed on their
* system.
*/
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle =
gtk_radio_button_new_with_label (group, _("Use WWW-Optimized Palette"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
g_signal_connect (G_OBJECT (toggle), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&dialog->webpal_flag);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->webpal_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
}
/* 'mono palette' */
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle =
gtk_radio_button_new_with_label (group, _("Use Black/White (1-Bit) Palette"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
g_signal_connect (G_OBJECT (toggle), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&dialog->monopal_flag);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->monopal_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
frame = gtk_frame_new (_("Dither Options"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show(vbox);
/* The dither radio buttons */
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (NULL, _("No Color Dithering"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
g_signal_connect (G_OBJECT (toggle), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&dialog->nodither_flag);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->nodither_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (group, _("Positioned Color Dithering"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
g_signal_connect (G_OBJECT (toggle), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&dialog->fixeddither_flag);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->fixeddither_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (group, _("Floyd-Steinberg Color Dithering (Reduced Color Bleeding)"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
g_signal_connect (G_OBJECT (toggle), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&dialog->fslowbleeddither_flag);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->fslowbleeddither_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (group, _("Floyd-Steinberg Color Dithering (Normal)"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
g_signal_connect (G_OBJECT (toggle), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&dialog->fsdither_flag);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->fsdither_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
/* The alpha-dither toggle */
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_check_button_new_with_label (_("Enable Dithering of Transparency"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->alphadither);
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
g_signal_connect (G_OBJECT (toggle), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&dialog->alphadither);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
/* now add the custom_frame */
if (custom_frame)
{
gtk_box_pack_start (GTK_BOX (main_vbox), custom_frame, FALSE, FALSE, 0);
gtk_widget_show (custom_frame);
}
/* if the image isn't non-alpha/layered, set the default number of
colours to one less than max, to leave room for a transparent index
for transparent/animated GIFs */
if (! gimp_image_is_empty (gimage) &&
GIMP_IMAGE_TYPE_HAS_ALPHA (gimage->base_type))
{
frame = gtk_frame_new (_("[ Warning ]"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
label = gtk_label_new
(_("You are attempting to convert an image with alpha/layers "
"from RGB/GRAY to INDEXED.\nYou should not generate a "
"palette of more than 255 colors if you intend to create "
"a transparent or animated GIF file from this image."));
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_container_add (GTK_CONTAINER (vbox), label);
gtk_widget_show (label);
}
gtk_widget_show (dialog->shell);
}
static GtkWidget *
build_palette_button (Gimp *gimp)
{
GList *list;
GimpPalette *palette;
GimpPalette *theWebPalette = NULL;
gint i;
gint default_palette;
UserHasWebPal = FALSE;
list = GIMP_LIST (gimp->palette_factory->container)->list;
if (! list)
{
return NULL;
}
for (i = 0, default_palette = -1;
list;
i++, list = g_list_next (list))
{
palette = (GimpPalette *) list->data;
/* Preferentially, the initial default is 'Web' if available */
if (theWebPalette == NULL &&
g_ascii_strcasecmp (GIMP_OBJECT (palette)->name, "Web") == 0)
{
theWebPalette = palette;
UserHasWebPal = TRUE;
}
/* We can't dither to > 256 colors */
if (palette->n_colors <= 256)
{
if (theCustomPalette == palette)
{
default_palette = i;
}
}
}
/* default to first one with <= 256 colors
* (only used if 'web' palette not available)
*/
if (default_palette == -1)
{
if (theWebPalette)
{
theCustomPalette = theWebPalette;
default_palette = 1; /* dummy value */
}
else
{
for (i = 0, list = GIMP_LIST (gimp->palette_factory->container)->list;
list && default_palette == -1;
i++, list = g_list_next (list))
{
palette = (GimpPalette *) list->data;
if (palette->n_colors <= 256)
{
theCustomPalette = palette;
default_palette = i;
}
}
}
}
if (default_palette == -1)
return NULL;
else
return gtk_button_new_with_label (GIMP_OBJECT (theCustomPalette)->name);
}
static void
indexed_ok_callback (GtkWidget *widget,
gpointer data)
{
IndexedDialog *dialog;
ConvertPaletteType palette_type;
ConvertDitherType dither_type;
GimpTool *active_tool;
dialog = (IndexedDialog *) data;
if (dialog->webpal_flag)
palette_type = WEB_PALETTE;
else if (dialog->custompal_flag)
palette_type = CUSTOM_PALETTE;
else if (dialog->monopal_flag)
palette_type = MONO_PALETTE;
else if (dialog->makepal_flag)
palette_type = MAKE_PALETTE;
else
palette_type = REUSE_PALETTE;
if (dialog->nodither_flag)
dither_type = NO_DITHER;
else if (dialog->fsdither_flag)
dither_type = FS_DITHER;
else if (dialog->fslowbleeddither_flag)
dither_type = FSLOWBLEED_DITHER;
else
dither_type = FIXED_DITHER;
/* Close the dialogs when open because they're useless for indexed
* images and could crash the GIMP when used nevertheless
*/
active_tool = tool_manager_get_active (dialog->gimage->gimp);
if (active_tool)
tool_manager_control_active (dialog->gimage->gimp, HALT, active_tool->gdisp);
/* Convert the image to indexed color */
gimp_image_convert (dialog->gimage, INDEXED, dialog->num_cols,
dither_type, dialog->alphadither,
dialog->remdups, palette_type, theCustomPalette);
gdisplays_flush ();
/* Save defaults for next time */
snum_cols = dialog->num_cols;
snodither_flag = dialog->nodither_flag;
sfsdither_flag = dialog->fsdither_flag;
sfslowbleeddither_flag = dialog->fslowbleeddither_flag;
sfixeddither_flag = dialog->fixeddither_flag;
salphadither_flag = dialog->alphadither;
sremdups_flag = dialog->remdups;
smakepal_flag = dialog->makepal_flag;
swebpal_flag = dialog->webpal_flag;
scustompal_flag = dialog->custompal_flag;
smonopal_flag = dialog->monopal_flag;
sreusepal_flag = dialog->reusepal_flag;
if (dialog->palette_select)
gtk_widget_destroy (dialog->palette_select->shell);
gtk_widget_destroy (dialog->shell);
g_free (dialog);
}
static void
indexed_cancel_callback (GtkWidget *widget,
gpointer data)
{
IndexedDialog *dialog;
dialog = (IndexedDialog *) data;
if (dialog->palette_select)
gtk_widget_destroy (dialog->palette_select->shell);
gtk_widget_destroy (dialog->shell);
g_free (dialog);
}
static void
indexed_palette_select_destroy_callback (GtkWidget *widget,
gpointer data)
{
IndexedDialog *dialog = (IndexedDialog *)data;
if (dialog)
dialog->palette_select = NULL;
}
static gint
indexed_palette_select_palette (GimpContext *context,
GimpPalette *palette,
gpointer data)
{
IndexedDialog *dialog;
dialog = (IndexedDialog *) data;
if (palette)
{
if (palette->n_colors <= 256)
{
theCustomPalette = palette;
gtk_label_set_text (GTK_LABEL (GTK_BIN (dialog->custom_palette_button)->child),
GIMP_OBJECT (theCustomPalette)->name);
}
}
return FALSE;
}
static void
indexed_custom_palette_button_callback (GtkWidget *widget,
gpointer data)
{
IndexedDialog *dialog = (IndexedDialog *) data;
if (dialog->palette_select == NULL)
{
dialog->palette_select =
palette_select_new (dialog->gimage->gimp,
_("Select Custom Palette"),
GIMP_OBJECT (theCustomPalette)->name,
NULL);
g_signal_connect (G_OBJECT (dialog->palette_select->shell), "destroy",
G_CALLBACK (indexed_palette_select_destroy_callback),
dialog);
g_signal_connect (G_OBJECT (dialog->palette_select->context),
"palette_changed",
G_CALLBACK (indexed_palette_select_palette),
dialog);
}
else
{
gdk_window_raise (dialog->palette_select->shell->window);
}
}
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