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gimp/plug-ins/common/file-pat.c

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/*
* pat plug-in version 1.01
* Loads/exports version 1 GIMP .pat files, by Tim Newsome <drz@frody.bloke.com>
*
* GIMP - The GNU 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 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "app/core/gimppattern-header.h"
#include "libgimp/stdplugins-intl.h"
#define LOAD_PROC "file-pat-load"
#define SAVE_PROC "file-pat-save"
#define PLUG_IN_BINARY "file-pat"
#define PLUG_IN_ROLE "gimp-file-pat"
/* local function prototypes */
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gint32 load_image (GFile *file,
GError **error);
static gboolean save_image (GFile *file,
gint32 image_ID,
gint32 drawable_ID,
GError **error);
static gboolean save_dialog (void);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
/* private variables */
static gchar description[256] = "GIMP Pattern";
MAIN ()
static void
query (void)
{
static const GimpParamDef load_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ GIMP_PDB_STRING, "uri", "The URI of the file to load" },
{ GIMP_PDB_STRING, "raw-uri", "The URI of the file to load" }
};
static const GimpParamDef load_return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Output image" }
};
static const GimpParamDef save_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Drawable to export" },
{ GIMP_PDB_STRING, "uri", "The URI of the file to export the image in" },
{ GIMP_PDB_STRING, "raw-uri", "The URI of the file to export the image in" },
{ GIMP_PDB_STRING, "description", "Short description of the pattern" }
};
gimp_install_procedure (LOAD_PROC,
"Loads Gimp's .PAT pattern files",
"The images in the pattern dialog can be loaded "
"directly with this plug-in",
"Tim Newsome",
"Tim Newsome",
"1997",
N_("GIMP pattern"),
NULL,
GIMP_PLUGIN,
G_N_ELEMENTS (load_args),
G_N_ELEMENTS (load_return_vals),
load_args, load_return_vals);
gimp_plugin_icon_register (LOAD_PROC, GIMP_ICON_TYPE_ICON_NAME,
(const guint8 *) GIMP_ICON_PATTERN);
gimp_register_file_handler_mime (LOAD_PROC, "image/x-gimp-pat");
gimp_register_file_handler_uri (LOAD_PROC);
gimp_register_magic_load_handler (LOAD_PROC,
"pat",
"",
"20,string,GPAT");
gimp_install_procedure (SAVE_PROC,
"Exports Gimp pattern file (.PAT)",
"New Gimp patterns can be created by exporting them "
"in the appropriate place with this plug-in.",
"Tim Newsome",
"Tim Newsome",
"1997",
N_("GIMP pattern"),
"RGB*, GRAY*, INDEXED*",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args), 0,
save_args, NULL);
gimp_plugin_icon_register (SAVE_PROC, GIMP_ICON_TYPE_ICON_NAME,
(const guint8 *) GIMP_ICON_PATTERN);
gimp_register_file_handler_mime (SAVE_PROC, "image/x-gimp-pat");
gimp_register_file_handler_uri (SAVE_PROC);
gimp_register_save_handler (SAVE_PROC, "pat", "");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[2];
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
gint32 image_ID;
gint32 drawable_ID;
GimpExportReturn export = GIMP_EXPORT_CANCEL;
GError *error = NULL;
INIT_I18N ();
gegl_init (NULL, NULL);
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
if (strcmp (name, LOAD_PROC) == 0)
{
image_ID = load_image (g_file_new_for_uri (param[1].data.d_string),
&error);
if (image_ID != -1)
{
*nreturn_vals = 2;
values[1].type = GIMP_PDB_IMAGE;
values[1].data.d_image = image_ID;
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
else if (strcmp (name, SAVE_PROC) == 0)
{
GFile *file;
GimpParasite *parasite;
gint32 orig_image_ID;
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
file = g_file_new_for_uri (param[3].data.d_string);
orig_image_ID = image_ID;
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
case GIMP_RUN_WITH_LAST_VALS:
gimp_ui_init (PLUG_IN_BINARY, FALSE);
export = gimp_export_image (&image_ID, &drawable_ID, "PAT",
GIMP_EXPORT_CAN_HANDLE_GRAY |
GIMP_EXPORT_CAN_HANDLE_RGB |
GIMP_EXPORT_CAN_HANDLE_INDEXED |
GIMP_EXPORT_CAN_HANDLE_ALPHA);
if (export == GIMP_EXPORT_CANCEL)
{
values[0].data.d_status = GIMP_PDB_CANCEL;
return;
}
/* Possibly retrieve data */
gimp_get_data (SAVE_PROC, description);
parasite = gimp_image_get_parasite (orig_image_ID,
"gimp-pattern-name");
if (parasite)
{
strncpy (description,
gimp_parasite_data (parasite),
MIN (sizeof (description),
gimp_parasite_data_size (parasite)));
description[sizeof (description) - 1] = '\0';
gimp_parasite_free (parasite);
}
else
{
gchar *name = g_path_get_basename (gimp_file_get_utf8_name (file));
if (g_str_has_suffix (name, ".pat"))
name[strlen (name) - 4] = '\0';
if (strlen (name))
{
strncpy (description, name, sizeof (description));
description[sizeof (description) - 1] = '\0';
}
g_free (name);
}
break;
default:
break;
}
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
if (! save_dialog ())
status = GIMP_PDB_CANCEL;
break;
case GIMP_RUN_NONINTERACTIVE:
if (nparams != 6)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
strncpy (description, param[5].data.d_string,
sizeof (description));
description[sizeof (description) - 1] = '\0';
}
break;
default:
break;
}
if (status == GIMP_PDB_SUCCESS)
{
if (save_image (file, image_ID, drawable_ID, &error))
{
gimp_set_data (SAVE_PROC, description, sizeof (description));
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image_ID);
if (strlen (description))
{
GimpParasite *parasite;
parasite = gimp_parasite_new ("gimp-pattern-name",
GIMP_PARASITE_PERSISTENT,
strlen (description) + 1,
description);
gimp_image_attach_parasite (orig_image_ID, parasite);
gimp_parasite_free (parasite);
}
else
{
gimp_image_detach_parasite (orig_image_ID, "gimp-pattern-name");
}
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
if (status != GIMP_PDB_SUCCESS && error)
{
*nreturn_vals = 2;
values[1].type = GIMP_PDB_STRING;
values[1].data.d_string = error->message;
}
values[0].data.d_status = status;
}
static gint32
load_image (GFile *file,
GError **error)
{
GInputStream *input;
PatternHeader ph;
gchar *name;
gchar *temp;
guchar *buf;
gint32 image_ID;
gint32 layer_ID;
GimpParasite *parasite;
GeglBuffer *buffer;
const Babl *file_format;
gint line;
GimpImageBaseType base_type;
GimpImageType image_type;
gsize bytes_read;
gimp_progress_init_printf (_("Opening '%s'"),
g_file_get_parse_name (file));
input = G_INPUT_STREAM (g_file_read (file, NULL, error));
if (! input)
return -1;
if (! g_input_stream_read_all (input, &ph, sizeof (PatternHeader),
&bytes_read, NULL, error) ||
bytes_read != sizeof (PatternHeader))
{
g_object_unref (input);
return -1;
}
/* rearrange the bytes in each unsigned int */
ph.header_size = g_ntohl (ph.header_size);
ph.version = g_ntohl (ph.version);
ph.width = g_ntohl (ph.width);
ph.height = g_ntohl (ph.height);
ph.bytes = g_ntohl (ph.bytes);
ph.magic_number = g_ntohl (ph.magic_number);
if (ph.magic_number != GPATTERN_MAGIC ||
ph.version != 1 ||
ph.header_size <= sizeof (PatternHeader))
{
g_object_unref (input);
return -1;
}
temp = g_new (gchar, ph.header_size - sizeof (PatternHeader));
if (! g_input_stream_read_all (input,
temp, ph.header_size - sizeof (PatternHeader),
&bytes_read, NULL, error) ||
bytes_read != ph.header_size - sizeof (PatternHeader))
{
g_free (temp);
g_object_unref (input);
return -1;
}
name = gimp_any_to_utf8 (temp, ph.header_size - sizeof (PatternHeader) - 1,
_("Invalid UTF-8 string in pattern file '%s'."),
g_file_get_parse_name (file));
g_free (temp);
/* Now there's just raw data left. */
/*
* Create a new image of the proper size and associate the filename with it.
*/
switch (ph.bytes)
{
case 1:
base_type = GIMP_GRAY;
image_type = GIMP_GRAY_IMAGE;
file_format = babl_format ("Y' u8");
break;
case 2:
base_type = GIMP_GRAY;
image_type = GIMP_GRAYA_IMAGE;
file_format = babl_format ("Y'A u8");
break;
case 3:
base_type = GIMP_RGB;
image_type = GIMP_RGB_IMAGE;
file_format = babl_format ("R'G'B' u8");
break;
case 4:
base_type = GIMP_RGB;
image_type = GIMP_RGBA_IMAGE;
file_format = babl_format ("R'G'B'A u8");
break;
default:
g_message ("Unsupported pattern depth: %d\n"
"GIMP Patterns must be GRAY or RGB", ph.bytes);
g_object_unref (input);
return -1;
}
/* Sanitize input dimensions and guard against overflows. */
if ((ph.width == 0) || (ph.width > GIMP_MAX_IMAGE_SIZE) ||
(ph.height == 0) || (ph.height > GIMP_MAX_IMAGE_SIZE) ||
(G_MAXSIZE / ph.width / ph.bytes < 1))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid header data in '%s': width=%lu, height=%lu, "
"bytes=%lu"), g_file_get_parse_name (file),
(unsigned long int)ph.width, (unsigned long int)ph.height,
(unsigned long int)ph.bytes);
g_object_unref (input);
return -1;
}
image_ID = gimp_image_new (ph.width, ph.height, base_type);
gimp_image_set_filename (image_ID, g_file_get_uri (file));
parasite = gimp_parasite_new ("gimp-pattern-name",
GIMP_PARASITE_PERSISTENT,
strlen (name) + 1, name);
gimp_image_attach_parasite (image_ID, parasite);
gimp_parasite_free (parasite);
layer_ID = gimp_layer_new (image_ID, name, ph.width, ph.height,
image_type,
100,
gimp_image_get_default_new_layer_mode (image_ID));
gimp_image_insert_layer (image_ID, layer_ID, -1, 0);
g_free (name);
buffer = gimp_drawable_get_buffer (layer_ID);
/* this can't overflow because ph.width is <= GIMP_MAX_IMAGE_SIZE */
buf = g_malloc (ph.width * ph.bytes);
for (line = 0; line < ph.height; line++)
{
if (! g_input_stream_read_all (input, buf, ph.width * ph.bytes,
&bytes_read, NULL, error) ||
bytes_read != ph.width * ph.bytes)
{
if (line == 0)
{
g_free (buf);
g_object_unref (buffer);
g_object_unref (input);
return -1;
}
else
{
g_message ("GIMP Pattern file is truncated "
"(%d of %d lines recovered).",
line - 1, ph.height);
break;
}
}
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, line, ph.width, 1), 0,
file_format, buf, GEGL_AUTO_ROWSTRIDE);
gimp_progress_update ((gdouble) line / (gdouble) ph.height);
}
g_free (buf);
g_object_unref (buffer);
g_object_unref (input);
gimp_progress_update (1.0);
return image_ID;
}
static gboolean
save_image (GFile *file,
gint32 image_ID,
gint32 drawable_ID,
GError **error)
{
GOutputStream *output;
PatternHeader ph;
GeglBuffer *buffer;
const Babl *file_format;
guchar *buf;
gint width;
gint height;
gint line_size;
gint line;
switch (gimp_drawable_type (drawable_ID))
{
case GIMP_GRAY_IMAGE:
file_format = babl_format ("Y' u8");
break;
case GIMP_GRAYA_IMAGE:
file_format = babl_format ("Y'A u8");
break;
case GIMP_RGB_IMAGE:
case GIMP_INDEXED_IMAGE:
file_format = babl_format ("R'G'B' u8");
break;
case GIMP_RGBA_IMAGE:
case GIMP_INDEXEDA_IMAGE:
file_format = babl_format ("R'G'B'A u8");
break;
default:
g_message ("Unsupported image type: %d\n"
"GIMP Patterns must be GRAY or RGB",
gimp_drawable_type (drawable_ID));
return FALSE;
}
gimp_progress_init_printf (_("Exporting '%s'"),
g_file_get_parse_name (file));
output = G_OUTPUT_STREAM (g_file_replace (file,
NULL, FALSE, G_FILE_CREATE_NONE,
NULL, error));
if (! output)
return FALSE;
buffer = gimp_drawable_get_buffer (drawable_ID);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
ph.header_size = g_htonl (sizeof (PatternHeader) + strlen (description) + 1);
ph.version = g_htonl (1);
ph.width = g_htonl (width);
ph.height = g_htonl (height);
ph.bytes = g_htonl (babl_format_get_bytes_per_pixel (file_format));
ph.magic_number = g_htonl (GPATTERN_MAGIC);
if (! g_output_stream_write_all (output, &ph, sizeof (PatternHeader),
NULL, NULL, error))
{
g_object_unref (output);
return FALSE;
}
if (! g_output_stream_write_all (output,
description, strlen (description) + 1,
NULL, NULL, error))
{
g_object_unref (output);
return FALSE;
}
line_size = width * babl_format_get_bytes_per_pixel (file_format);
/* this can't overflow because drawable->width is <= GIMP_MAX_IMAGE_SIZE */
buf = g_alloca (line_size);
for (line = 0; line < height; line++)
{
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, line, width, 1), 1.0,
file_format, buf,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
if (! g_output_stream_write_all (output, buf, line_size,
NULL, NULL, error))
{
g_object_unref (buffer);
g_object_unref (output);
return FALSE;
}
gimp_progress_update ((gdouble) line / (gdouble) height);
}
g_object_unref (buffer);
g_object_unref (output);
gimp_progress_update (1.0);
return TRUE;
}
static gboolean
save_dialog (void)
{
GtkWidget *dialog;
GtkWidget *table;
GtkWidget *entry;
gboolean run;
dialog = gimp_export_dialog_new (_("Pattern"), PLUG_IN_BINARY, SAVE_PROC);
/* The main table */
table = gtk_table_new (1, 2, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_container_set_border_width (GTK_CONTAINER (table), 12);
gtk_box_pack_start (GTK_BOX (gimp_export_dialog_get_content_area (dialog)),
table, TRUE, TRUE, 0);
gtk_widget_show (table);
entry = gtk_entry_new ();
gtk_entry_set_width_chars (GTK_ENTRY (entry), 20);
gtk_entry_set_activates_default (GTK_ENTRY (entry), TRUE);
gtk_entry_set_text (GTK_ENTRY (entry), description);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Description:"), 1.0, 0.5,
entry, 1, FALSE);
gtk_widget_show (entry);
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
if (run)
{
strncpy (description, gtk_entry_get_text (GTK_ENTRY (entry)),
sizeof (description));
description[sizeof (description) - 1] = '\0';
}
gtk_widget_destroy (dialog);
return run;
}
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