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gimp/plug-ins/file-ico/ico-dialog.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
*
* GIMP Plug-in for Windows Icon files.
* Copyright (C) 2002 Christian Kreibich <christian@whoop.org>.
*
* 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 <libgimp/gimp.h>
#include <libgimp/gimpui.h>
/* #define ICO_DBG */
#include "ico.h"
#include "ico-dialog.h"
#include "ico-save.h"
#include "libgimp/stdplugins-intl.h"
static void ico_dialog_bpp_changed (GtkWidget *combo,
GObject *hbox);
static void ico_dialog_toggle_compress (GtkWidget *checkbox,
GObject *hbox);
static void ico_dialog_check_compat (GtkWidget *dialog,
IcoSaveInfo *info);
GtkWidget *
ico_dialog_new (IcoSaveInfo *info)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *frame;
GtkWidget *scrolled_window;
GtkWidget *viewport;
GtkWidget *warning;
dialog = gimp_export_dialog_new (_("Windows Icon"),
PLUG_IN_BINARY,
"plug-in-winicon");
/* We store an array that holds each icon's requested bit depth
with the dialog. It's queried when the dialog is closed so the
save routine knows what colormaps etc to generate in the saved
file. We store twice the number necessary because in the second
set, the color depths that are automatically suggested are stored
for later comparison.
*/
g_object_set_data (G_OBJECT (dialog), "save_info", info);
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
gtk_box_pack_start (GTK_BOX (gimp_export_dialog_get_content_area (dialog)),
main_vbox, TRUE, TRUE, 0);
gtk_widget_show (main_vbox);
frame = gimp_frame_new (_("Icon Details"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
scrolled_window = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
gtk_container_add (GTK_CONTAINER (frame), scrolled_window);
gtk_widget_show (scrolled_window);
viewport = gtk_viewport_new (NULL, NULL);
gtk_container_add (GTK_CONTAINER (scrolled_window), viewport);
gtk_widget_show (viewport);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
g_object_set_data (G_OBJECT (dialog), "icons_vbox", vbox);
gtk_container_add (GTK_CONTAINER (viewport), vbox);
gtk_widget_show (vbox);
warning = g_object_new (GIMP_TYPE_HINT_BOX,
"icon-name", GIMP_ICON_DIALOG_WARNING,
"hint",
_("Large icons and compression are not supported "
"by all programs. Older applications may not "
"open this file correctly."),
NULL);
gtk_box_pack_end (GTK_BOX (main_vbox), warning, FALSE, FALSE, 0);
/* don't show the warning here */
g_object_set_data (G_OBJECT (dialog), "warning", warning);
return dialog;
}
static GtkWidget *
ico_preview_new (GimpDrawable *layer)
{
GtkWidget *image;
GdkPixbuf *pixbuf;
gint width = gimp_drawable_width (layer);
gint height = gimp_drawable_height (layer);
pixbuf = gimp_drawable_get_thumbnail (layer,
MIN (width, 128), MIN (height, 128),
GIMP_PIXBUF_SMALL_CHECKS);
image = gtk_image_new_from_pixbuf (pixbuf);
g_object_unref (pixbuf);
return image;
}
/* This function creates and returns an hbox for an icon,
which then gets added to the dialog's main vbox. */
static GtkWidget *
ico_create_icon_hbox (GtkWidget *icon_preview,
GimpDrawable *layer,
gint layer_num,
IcoSaveInfo *info)
{
static GtkSizeGroup *size = NULL;
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *combo;
GtkWidget *checkbox;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
/* To make life easier for the callbacks, we store the
layer's ID and stacking number with the hbox. */
g_object_set_data (G_OBJECT (hbox),
"icon_layer", layer);
g_object_set_data (G_OBJECT (hbox),
"icon_layer_num", GINT_TO_POINTER (layer_num));
g_object_set_data (G_OBJECT (hbox), "icon_preview", icon_preview);
gtk_widget_set_halign (icon_preview, GTK_ALIGN_END);
gtk_widget_set_valign (icon_preview, GTK_ALIGN_CENTER);
gtk_box_pack_start (GTK_BOX (hbox), icon_preview, FALSE, FALSE, 0);
gtk_widget_show (icon_preview);
if (! size)
size = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
gtk_size_group_add_widget (size, icon_preview);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
gtk_widget_show (vbox);
combo = gimp_int_combo_box_new (_("1 bpp, 1-bit alpha, 2-slot palette"), 1,
_("4 bpp, 1-bit alpha, 16-slot palette"), 4,
_("8 bpp, 1-bit alpha, 256-slot palette"), 8,
_("24 bpp, 1-bit alpha, no palette"), 24,
_("32 bpp, 8-bit alpha, no palette"), 32,
NULL);
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (combo),
info->depths[layer_num]);
g_signal_connect (combo, "changed",
G_CALLBACK (ico_dialog_bpp_changed),
hbox);
g_object_set_data (G_OBJECT (hbox), "icon_menu", combo);
gtk_box_pack_start (GTK_BOX (vbox), combo, FALSE, FALSE, 0);
gtk_widget_show (combo);
checkbox = gtk_check_button_new_with_label (_("Compressed (PNG)"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (checkbox),
info->compress[layer_num]);
g_signal_connect (checkbox, "toggled",
G_CALLBACK (ico_dialog_toggle_compress), hbox);
gtk_box_pack_start (GTK_BOX (vbox), checkbox, FALSE, FALSE, 0);
gtk_widget_show (checkbox);
return hbox;
}
static GtkWidget *
ico_dialog_get_layer_preview (GtkWidget *dialog,
GimpDrawable *layer)
{
GtkWidget *preview;
GtkWidget *icon_hbox;
gchar key[ICO_MAXBUF];
g_snprintf (key, sizeof (key), "layer_%i_hbox",
gimp_item_get_id (GIMP_ITEM (layer)));
icon_hbox = g_object_get_data (G_OBJECT (dialog), key);
if (!icon_hbox)
{
D(("Something's wrong -- couldn't look up hbox by layer ID\n"));
return NULL;
}
preview = g_object_get_data (G_OBJECT (icon_hbox), "icon_preview");
if (!icon_hbox)
{
D(("Something's wrong -- couldn't look up preview from hbox\n"));
return NULL;
}
return preview;
}
static void
ico_dialog_update_icon_preview (GtkWidget *dialog,
GimpDrawable *layer,
gint bpp)
{
GtkWidget *preview = ico_dialog_get_layer_preview (dialog, layer);
GdkPixbuf *pixbuf;
const Babl *format;
gint w = gimp_drawable_width (layer);
gint h = gimp_drawable_height (layer);
if (! preview)
return;
switch (gimp_drawable_type (layer))
{
case GIMP_RGB_IMAGE:
format = babl_format ("R'G'B' u8");
break;
case GIMP_RGBA_IMAGE:
format = babl_format ("R'G'B'A u8");
break;
case GIMP_GRAY_IMAGE:
format = babl_format ("Y' u8");
break;
case GIMP_GRAYA_IMAGE:
format = babl_format ("Y'A u8");
break;
case GIMP_INDEXED_IMAGE:
case GIMP_INDEXEDA_IMAGE:
format = gimp_drawable_get_format (layer);
break;
default:
g_return_if_reached ();
}
if (bpp <= 8)
{
GeglBuffer *buffer;
GeglBuffer *tmp;
GimpImage *image;
GimpImage *tmp_image;
GimpLayer *tmp_layer;
guchar *buf;
guchar *cmap;
gint num_colors;
image = gimp_item_get_image (GIMP_ITEM (layer));
tmp_image = gimp_image_new (w, h, gimp_image_base_type (image));
gimp_image_undo_disable (tmp_image);
if (gimp_drawable_is_indexed (layer))
{
cmap = gimp_image_get_colormap (image, &num_colors);
gimp_image_set_colormap (tmp_image, cmap, num_colors);
g_free (cmap);
}
tmp_layer = gimp_layer_new (tmp_image, "temporary", w, h,
gimp_drawable_type (layer),
100,
gimp_image_get_default_new_layer_mode (tmp_image));
gimp_image_insert_layer (tmp_image, tmp_layer, NULL, 0);
buffer = gimp_drawable_get_buffer (layer);
tmp = gimp_drawable_get_buffer (GIMP_DRAWABLE (tmp_layer));
buf = g_malloc (w * h * 4);
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, 0, w, h), 1.0,
format, buf,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
gegl_buffer_copy (buffer, NULL, GEGL_ABYSS_NONE, tmp, NULL);
g_object_unref (tmp);
g_object_unref (buffer);
if (gimp_drawable_is_indexed (layer))
gimp_image_convert_rgb (tmp_image);
gimp_image_convert_indexed (tmp_image,
GIMP_CONVERT_DITHER_FS,
GIMP_CONVERT_PALETTE_GENERATE,
1 << bpp, TRUE, FALSE, "dummy");
cmap = gimp_image_get_colormap (tmp_image, &num_colors);
if (num_colors == (1 << bpp) &&
! ico_cmap_contains_black (cmap, num_colors))
{
/* Windows icons with color maps need the color black.
* We need to eliminate one more color to make room for black.
*/
if (gimp_drawable_is_indexed (layer))
{
g_free (cmap);
cmap = gimp_image_get_colormap (image, &num_colors);
gimp_image_set_colormap (tmp_image, cmap, num_colors);
}
else if (gimp_drawable_is_gray (layer))
{
gimp_image_convert_grayscale (tmp_image);
}
else
{
gimp_image_convert_rgb (tmp_image);
}
tmp = gimp_drawable_get_buffer (GIMP_DRAWABLE (tmp_layer));
gegl_buffer_set (tmp, GEGL_RECTANGLE (0, 0, w, h), 0,
format, buf, GEGL_AUTO_ROWSTRIDE);
g_object_unref (tmp);
if (!gimp_drawable_is_rgb (layer))
gimp_image_convert_rgb (tmp_image);
gimp_image_convert_indexed (tmp_image,
GIMP_CONVERT_DITHER_FS,
GIMP_CONVERT_PALETTE_GENERATE,
(1 << bpp) - 1, TRUE, FALSE, "dummy");
}
g_free (cmap);
g_free (buf);
pixbuf = gimp_drawable_get_thumbnail (GIMP_DRAWABLE (tmp_layer),
MIN (w, 128), MIN (h, 128),
GIMP_PIXBUF_SMALL_CHECKS);
gimp_image_delete (tmp_image);
}
else if (bpp == 24)
{
GeglBuffer *buffer;
GeglBuffer *tmp;
GimpImage *image;
GimpImage *tmp_image;
GimpLayer *tmp_layer;
GimpValueArray *return_vals;
image = gimp_item_get_image (GIMP_ITEM (layer));
tmp_image = gimp_image_new (w, h, gimp_image_base_type (image));
gimp_image_undo_disable (tmp_image);
if (gimp_drawable_is_indexed (layer))
{
guchar *cmap;
gint num_colors;
cmap = gimp_image_get_colormap (image, &num_colors);
gimp_image_set_colormap (tmp_image, cmap, num_colors);
g_free (cmap);
}
tmp_layer = gimp_layer_new (tmp_image, "temporary", w, h,
gimp_drawable_type (layer),
100,
gimp_image_get_default_new_layer_mode (tmp_image));
gimp_image_insert_layer (tmp_image, tmp_layer, NULL, 0);
buffer = gimp_drawable_get_buffer (layer);
tmp = gimp_drawable_get_buffer (GIMP_DRAWABLE (tmp_layer));
gegl_buffer_copy (buffer, NULL, GEGL_ABYSS_NONE, tmp, NULL);
g_object_unref (tmp);
g_object_unref (buffer);
if (gimp_drawable_is_indexed (layer))
gimp_image_convert_rgb (tmp_image);
return_vals =
gimp_pdb_run_procedure (gimp_get_pdb (),
"plug-in-threshold-alpha",
GIMP_TYPE_RUN_MODE, GIMP_RUN_NONINTERACTIVE,
GIMP_TYPE_IMAGE_ID, gimp_image_get_id (tmp_image),
GIMP_TYPE_DRAWABLE_ID, gimp_item_get_id (GIMP_ITEM (tmp_layer)),
G_TYPE_INT, ICO_ALPHA_THRESHOLD,
G_TYPE_NONE);
gimp_value_array_unref (return_vals);
pixbuf = gimp_drawable_get_thumbnail (GIMP_DRAWABLE (tmp_layer),
MIN (w, 128), MIN (h, 128),
GIMP_PIXBUF_SMALL_CHECKS);
gimp_image_delete (tmp_image);
}
else
{
pixbuf = gimp_drawable_get_thumbnail (layer,
MIN (w, 128), MIN (h, 128),
GIMP_PIXBUF_SMALL_CHECKS);
}
gtk_image_set_from_pixbuf (GTK_IMAGE (preview), pixbuf);
g_object_unref (pixbuf);
}
void
ico_dialog_add_icon (GtkWidget *dialog,
GimpDrawable *layer,
gint layer_num)
{
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *preview;
gchar key[ICO_MAXBUF];
IcoSaveInfo *info;
vbox = g_object_get_data (G_OBJECT (dialog), "icons_vbox");
info = g_object_get_data (G_OBJECT (dialog), "save_info");
preview = ico_preview_new (layer);
hbox = ico_create_icon_hbox (preview, layer, layer_num, info);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
/* Let's make the hbox accessible through the layer ID */
g_snprintf (key, sizeof (key), "layer_%i_hbox",
gimp_item_get_id (GIMP_ITEM (layer)));
g_object_set_data (G_OBJECT (dialog), key, hbox);
ico_dialog_update_icon_preview (dialog, layer, info->depths[layer_num]);
ico_dialog_check_compat (dialog, info);
}
static void
ico_dialog_bpp_changed (GtkWidget *combo,
GObject *hbox)
{
GtkWidget *dialog;
GimpDrawable *layer;
gint layer_num;
gint bpp;
IcoSaveInfo *info;
dialog = gtk_widget_get_toplevel (combo);
gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (combo), &bpp);
info = g_object_get_data (G_OBJECT (dialog), "save_info");
g_assert (info);
layer = g_object_get_data (hbox, "icon_layer");
layer_num = GPOINTER_TO_INT (g_object_get_data (hbox, "icon_layer_num"));
/* Update vector entry for later when we're actually saving,
and update the preview right away ... */
info->depths[layer_num] = bpp;
ico_dialog_update_icon_preview (dialog, layer, bpp);
}
static void
ico_dialog_toggle_compress (GtkWidget *checkbox,
GObject *hbox)
{
GtkWidget *dialog;
gint layer_num;
IcoSaveInfo *info;
dialog = gtk_widget_get_toplevel (checkbox);
info = g_object_get_data (G_OBJECT (dialog), "save_info");
g_assert (info);
layer_num = GPOINTER_TO_INT (g_object_get_data (hbox, "icon_layer_num"));
/* Update vector entry for later when we're actually saving */
info->compress[layer_num] =
gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (checkbox));
ico_dialog_check_compat (dialog, info);
}
static void
ico_dialog_check_compat (GtkWidget *dialog,
IcoSaveInfo *info)
{
GtkWidget *warning;
GList *iter;
gboolean warn = FALSE;
gint i;
for (iter = info->layers, i = 0; iter; iter = iter->next, i++)
{
if (gimp_drawable_width (iter->data) > 255 ||
gimp_drawable_height (iter->data) > 255 ||
info->compress[i])
{
warn = TRUE;
break;
}
}
warning = g_object_get_data (G_OBJECT (dialog), "warning");
gtk_widget_set_visible (warning, warn);
}
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