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PIKApp/plug-ins/file-icns/file-icns-save.c

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/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995-1999 Spencer Kimball and Peter Mattis
*
* file-icns-save.c
* Copyright (C) 2004 Brion Vibber <brion@pobox.com>
*
* 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 <errno.h>
#include <string.h>
#include <glib/gstdio.h>
#include <libpika/pika.h>
#include <libpika/pikaui.h>
#include "file-icns.h"
#include "file-icns-data.h"
#include "file-icns-load.h"
#include "file-icns-save.h"
#include "libpika/stdplugins-intl.h"
GtkWidget * icns_dialog_new (IcnsSaveInfo *info);
static gboolean icns_save_dialog (IcnsSaveInfo *info,
PikaImage *image);
void icns_dialog_add_icon (GtkWidget *dialog,
PikaDrawable *layer,
gint layer_num,
gint duplicates[]);
static GtkWidget * icns_preview_new (PikaDrawable *layer);
static GtkWidget * icns_create_icon_item (GtkWidget *icon_preview,
PikaDrawable *layer,
gint layer_num,
IcnsSaveInfo *info,
gint duplicates[]);
static gint icns_find_type (gint width,
gint height);
static gboolean icns_check_dimensions (gint width,
gint height);
static gboolean icns_check_compat (GtkWidget *dialog,
IcnsSaveInfo *info);
PikaPDBStatusType icns_export_image (GFile *file,
IcnsSaveInfo *info,
PikaImage *image,
GError **error);
static void icns_save_info_free (IcnsSaveInfo *info);
/* Referenced from plug-ins/file-ico/ico-dialog.c */
void
icns_dialog_add_icon (GtkWidget *dialog,
PikaDrawable *layer,
gint layer_num,
gint duplicates[])
{
GtkWidget *flowbox;
GtkWidget *vbox_item;
GtkWidget *preview;
gchar key[ICNS_MAXBUF];
IcnsSaveInfo *info;
flowbox = g_object_get_data (G_OBJECT (dialog), "icons_flowbox");
info = g_object_get_data (G_OBJECT (dialog), "save_info");
preview = icns_preview_new (layer);
vbox_item = icns_create_icon_item (preview, layer, layer_num, info,
duplicates);
gtk_flow_box_insert (GTK_FLOW_BOX (flowbox), vbox_item, -1);
gtk_widget_show (vbox_item);
/* Let's make the vbox_item accessible through the layer ID */
g_snprintf (key, sizeof (key), "layer_%i_hbox",
pika_item_get_id (PIKA_ITEM (layer)));
g_object_set_data (G_OBJECT (dialog), key, vbox_item);
icns_check_compat (dialog, info);
}
static GtkWidget *
icns_preview_new (PikaDrawable *layer)
{
GtkWidget *image;
GdkPixbuf *pixbuf;
gint width = pika_drawable_get_width (layer);
gint height = pika_drawable_get_height (layer);
pixbuf = pika_drawable_get_thumbnail (layer,
MIN (width, 128), MIN (height, 128),
PIKA_PIXBUF_SMALL_CHECKS);
image = gtk_image_new_from_pixbuf (pixbuf);
g_object_unref (pixbuf);
return image;
}
static gint
icns_find_type (gint width,
gint height)
{
gint match = -1;
for (gint j = 0; iconTypes[j].type; j++)
{
/* TODO: Currently, this chooses the first "modern" ICNS format for a
* ICNS file. This is because newer formats are not supported well in
* non-native MacOS programs like Inkscape. It'd be nice to design
* a GUI with enough information for users to make their own decisions
*/
if (iconTypes[j].width == width &&
iconTypes[j].height == height &&
iconTypes[j].isModern)
{
match = j;
break;
}
}
return match;
}
static gboolean
icns_check_dimensions (gint width,
gint height)
{
gboolean isValid = TRUE;
if (width != height)
{
/* Only valid non-square size is 16x12 */
if (! (width == 16 && height == 12))
isValid = FALSE;
}
else
{
/* Valid square ICNS sizes */
if (width != 16 &&
width != 18 &&
width != 24 &&
width != 32 &&
width != 36 &&
width != 48 &&
width != 64 &&
width != 128 &&
width != 256 &&
width != 512 &&
width != 1024)
isValid = FALSE;
}
return isValid;
}
static GtkWidget *
icns_create_icon_item (GtkWidget *icon_preview,
PikaDrawable *layer,
gint layer_num,
IcnsSaveInfo *info,
gint duplicates[])
{
static GtkSizeGroup *size = NULL;
GtkWidget *vbox_item;
GtkWidget *frame;
gchar *frame_header;
gint match = -1;
gint width = pika_drawable_get_width (layer);
gint height = pika_drawable_get_height (layer);
vbox_item = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
/* To make life easier for the callbacks, we store the
layer's ID and stacking number with vbox_item. */
g_object_set_data (G_OBJECT (vbox_item),
"icon_layer", layer);
g_object_set_data (G_OBJECT (vbox_item),
"icon_layer_num", GINT_TO_POINTER (layer_num));
frame_header = g_strdup_printf ("%dx%d", width, height);
frame = pika_frame_new (frame_header);
gtk_box_pack_start (GTK_BOX (vbox_item), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
g_free (frame_header);
g_object_set_data (G_OBJECT (vbox_item), "icon_preview", icon_preview);
gtk_container_add (GTK_CONTAINER (frame), icon_preview);
gtk_widget_show (icon_preview);
if (! size)
size = gtk_size_group_new (GTK_SIZE_GROUP_VERTICAL);
gtk_size_group_add_widget (size, icon_preview);
match = icns_find_type (pika_drawable_get_width (layer),
pika_drawable_get_height (layer));
if (! icns_check_dimensions (width, height) ||
(match != -1 && duplicates[match] != 0))
{
GtkWidget *label;
gchar *warning;
gchar *markup;
if (! icns_check_dimensions (width, height))
warning = g_strdup_printf (_("Invalid icon size. \n"
"It will not be exported"));
else
warning = g_strdup_printf (_("Duplicate layer size. \n"
"It will not be exported"));
markup = g_strdup_printf ("<i>%s</i>", warning);
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label), markup);
g_free (markup);
g_free (warning);
gtk_box_pack_start (GTK_BOX (vbox_item), label, FALSE, FALSE, 0);
gtk_widget_show (label);
gtk_style_context_add_class (gtk_widget_get_style_context (vbox_item),
"background");
}
if (match != -1)
duplicates[match] = 1;
return vbox_item;
}
static gboolean
icns_check_compat (GtkWidget *dialog,
IcnsSaveInfo *info)
{
GtkWidget *warning;
GList *iter;
gboolean warn = FALSE;
gint i;
for (iter = info->layers, i = 0; iter; iter = iter->next, i++)
{
gint width = pika_drawable_get_width (iter->data);
gint height = pika_drawable_get_height (iter->data);
warn = ! icns_check_dimensions (width, height);
if (warn)
break;
}
if (dialog)
{
warning = g_object_get_data (G_OBJECT (dialog), "warning");
gtk_widget_set_visible (warning, warn);
}
return ! warn;
}
GtkWidget *
icns_dialog_new (IcnsSaveInfo *info)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *frame;
GtkWidget *scrolled_window;
GtkWidget *viewport;
GtkWidget *flowbox;
GtkWidget *warning;
dialog = pika_export_dialog_new (_("Apple Icon Image"),
PLUG_IN_BINARY,
"plug-in-icns-save");
g_object_set_data (G_OBJECT (dialog), "save_info", info);
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 6);
gtk_box_pack_start (GTK_BOX (pika_export_dialog_get_content_area (dialog)),
main_vbox, TRUE, TRUE, 0);
gtk_widget_show (main_vbox);
warning = g_object_new (PIKA_TYPE_HINT_BOX,
"icon-name", PIKA_ICON_DIALOG_WARNING,
"hint",
_("Valid ICNS icons sizes are:\n "
"16x12, 16x16, 18x18, 24x24, 32x32, 36x36, 48x48,\n"
"64x64, 128x128, 256x256, 512x512, and 1024x1024.\n"
"Any other sized layers will be ignored on export."),
NULL);
gtk_box_pack_end (GTK_BOX (main_vbox), warning, FALSE, FALSE, 12);
/* Don't show warning by default */
frame = pika_frame_new (_("Export Icons"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 4);
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);
flowbox = gtk_flow_box_new ();
gtk_flow_box_set_column_spacing (GTK_FLOW_BOX (flowbox), 6);
gtk_flow_box_set_row_spacing (GTK_FLOW_BOX (flowbox), 6);
gtk_flow_box_set_selection_mode (GTK_FLOW_BOX (flowbox), GTK_SELECTION_NONE);
g_object_set_data (G_OBJECT (dialog), "icons_flowbox", flowbox);
gtk_container_add (GTK_CONTAINER (viewport), flowbox);
gtk_widget_show (flowbox);
g_object_set_data (G_OBJECT (dialog), "warning", warning);
return dialog;
}
static gboolean
icns_save_dialog (IcnsSaveInfo *info,
PikaImage *image)
{
GtkWidget *dialog;
GList *iter;
gint i;
gint j;
gint response;
gint duplicates[ICNS_TYPE_NUM];
gint ordered[12] =
{12, 16, 18, 24, 32, 36, 48, 64, 128, 256, 512, 1024};
pika_ui_init (PLUG_IN_BINARY);
for (i = 0; i < ICNS_TYPE_NUM; i++)
duplicates[i] = 0;
dialog = icns_dialog_new (info);
/* Add icons in order, smallest to largest */
for (i = 0; i < 12; i++)
{
for (iter = info->layers, j = 0;
iter;
iter = g_list_next (iter), j++)
{
/* Put the icons in order in dialog */
gint width = pika_drawable_get_width (iter->data);
gint height = pika_drawable_get_height (iter->data);
if (height != ordered[i] || ! icns_check_dimensions (width, height))
continue;
icns_dialog_add_icon (dialog, iter->data, i, duplicates);
}
}
/* Add any invalid icons at the end */
for (iter = info->layers, i = 0;
iter;
iter = g_list_next (iter), i++)
{
if (! icns_check_dimensions (pika_drawable_get_width (iter->data),
pika_drawable_get_height (iter->data)))
icns_dialog_add_icon (dialog, iter->data, i, duplicates);
}
/* Scale the thing to approximately fit its content, but not too large ... */
gtk_window_set_default_size (GTK_WINDOW (dialog),
200 + (info->num_icons > 4 ?
500 : info->num_icons * 120),
200 + (info->num_icons > 4 ?
250 : info->num_icons * 60));
gtk_widget_show (dialog);
response = pika_dialog_run (PIKA_DIALOG (dialog));
gtk_widget_destroy (dialog);
return (response == GTK_RESPONSE_OK);
}
PikaPDBStatusType
icns_export_image (GFile *file,
IcnsSaveInfo *info,
PikaImage *image,
GError **error)
{
FILE *fp;
GList *iter;
gint i;
guint32 file_size = 8;
gint duplicates[ICNS_TYPE_NUM];
for (i = 0; i < ICNS_TYPE_NUM; i++)
duplicates[i] = 0;
fp = g_fopen (g_file_peek_path (file), "wb");
if (! fp)
{
icns_save_info_free (info);
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for writing: %s"),
pika_file_get_utf8_name (file), g_strerror (errno));
return PIKA_PDB_EXECUTION_ERROR;
}
/* Write Header */
fwrite ("icns", sizeof (gchar), 4, fp);
fwrite ("\0\0\0\0", sizeof (gchar), 4, fp); /* will be filled in later */
/* Write Icon Data */
for (iter = info->layers, i = 0;
iter;
iter = g_list_next (iter), i++)
{
gint match = -1;
gint width = pika_drawable_get_width (iter->data);
gint height = pika_drawable_get_height (iter->data);
/* Don't export icons with invalid dimensions */
if (! icns_check_dimensions (width, height))
continue;
match = icns_find_type (width, height);
/* MacOS X format icons */
if (match != -1 && duplicates[match] == 0)
{
PikaProcedure *procedure;
PikaValueArray *return_vals;
PikaDrawable **drawables = NULL;
GFile *temp_file = NULL;
PikaObjectArray *args;
FILE *temp_fp;
gint temp_size;
gint macos_size;
temp_file = pika_temp_file ("png");
drawables = g_new (PikaDrawable *, 1);
drawables[0] = iter->data;
args = pika_object_array_new (PIKA_TYPE_DRAWABLE, (GObject **) drawables, 1, FALSE);
procedure = pika_pdb_lookup_procedure (pika_get_pdb (), "file-png-save");
return_vals = pika_procedure_run (procedure,
"run-mode", PIKA_RUN_NONINTERACTIVE,
"image", image,
"num-drawables", 1,
"drawables", args,
"file", temp_file,
"interlaced", FALSE,
"compression", 9,
"bkgd", FALSE,
"offs", FALSE,
"phys", FALSE,
"time", FALSE,
"save-transparent", FALSE,
"optimize-palette", FALSE,
NULL);
pika_object_array_free (args);
g_clear_pointer (&drawables, g_free);
if (PIKA_VALUES_GET_ENUM (return_vals, 0) != PIKA_PDB_SUCCESS)
{
icns_save_info_free (info);
g_set_error (error, 0, 0,
"Running procedure 'file-png-save' "
"for icns export failed: %s",
pika_pdb_get_last_error (pika_get_pdb ()));
return PIKA_PDB_EXECUTION_ERROR;
}
temp_fp = g_fopen (g_file_peek_path (temp_file), "rb");
fseek (temp_fp, 0L, SEEK_END);
temp_size = ftell (temp_fp);
fseek (temp_fp, 0L, SEEK_SET);
g_file_delete (temp_file, NULL, NULL);
g_object_unref (temp_file);
fwrite (iconTypes[match].type, sizeof (gchar), 4, fp);
macos_size = GUINT32_TO_BE (temp_size + 8);
fwrite (&macos_size, sizeof (macos_size), 1, fp);
if (temp_size > 0)
{
guchar buf[temp_size];
fread (buf, 1, sizeof (buf), temp_fp);
if (fwrite (buf, 1, temp_size, fp) < temp_size)
{
icns_save_info_free (info);
g_set_error (error, G_FILE_ERROR,
g_file_error_from_errno (errno),
_("Error writing icns: %s"),
g_strerror (errno));
return PIKA_PDB_EXECUTION_ERROR;
}
}
fclose (temp_fp);
file_size += temp_size + 8;
duplicates[match] = 1;
}
pika_progress_update (i / info->num_icons);
}
/* Update header with full file size */
file_size = GUINT32_TO_BE (file_size);
fseek (fp, 4L, SEEK_SET);
fwrite (&file_size, sizeof (file_size), 1, fp);
pika_progress_update (1.0);
icns_save_info_free (info);
fclose (fp);
return PIKA_PDB_SUCCESS;
}
static void
icns_save_info_free (IcnsSaveInfo *info)
{
g_list_free (info->layers);
memset (info, 0, sizeof (IcnsSaveInfo));
}
PikaPDBStatusType
icns_save_image (GFile *file,
PikaImage *image,
gint32 run_mode,
GError **error)
{
IcnsSaveInfo info;
GList *iter;
gboolean isValidLayers = FALSE;
gint i;
info.layers = pika_image_list_layers (image);
info.num_icons = g_list_length (info.layers);
/* Initial check if we have any valid layers to export */
for (iter = info.layers, i = 0; iter; iter = iter->next, i++)
{
gint width = pika_drawable_get_width (iter->data);
gint height = pika_drawable_get_height (iter->data);
if (icns_check_dimensions (width, height))
{
isValidLayers = TRUE;
break;
}
}
if (! isValidLayers)
{
g_set_error (error, G_FILE_ERROR, 0,
_("No valid sized layers. Only valid layer sizes are "
"16x12, 16x16, 18x18, 24x24, 32x32, 36x36, 48x48, "
"64x64, 128x128, 256x256, 512x512, or 1024x1024."));
return PIKA_PDB_EXECUTION_ERROR;
}
if (run_mode == PIKA_RUN_INTERACTIVE)
{
/* Allow user to override default values */
if (! icns_save_dialog (&info, image))
return PIKA_PDB_CANCEL;
}
else if (run_mode == PIKA_RUN_NONINTERACTIVE)
{
if (! icns_check_compat (NULL, &info))
{
g_set_error (error, G_FILE_ERROR, 0,
_("Invalid layer size(s). Only valid layer sizes are "
"16x12, 16x16, 18x18, 24x24, 32x32, 36x36, 48x48, "
"64x64, 128x128, 256x256, 512x512, or 1024x1024."));
return PIKA_PDB_EXECUTION_ERROR;
}
}
pika_progress_init_printf (_("Exporting '%s'"),
pika_file_get_utf8_name (file));
return icns_export_image (file, &info, image, error);
}
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