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

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/*
* pat plug-in version 1.01
* Loads/saves 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 <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <glib/gstdio.h>
#ifdef G_OS_WIN32
#include <libgimpbase/gimpwin32-io.h>
#endif
#ifndef _O_BINARY
#define _O_BINARY 0
#endif
#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"
/* 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 (const gchar *filename,
GError **error);
static gboolean save_image (const gchar *filename,
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, "filename", "The name of the file to load" },
{ GIMP_PDB_STRING, "raw-filename", "The name 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 save" },
{ GIMP_PDB_STRING, "filename", "The name of the file to save the image in" },
{ GIMP_PDB_STRING, "raw-filename", "The name of the file to save 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_STOCK_ID,
(const guint8 *) GIMP_STOCK_PATTERN);
gimp_register_file_handler_mime (LOAD_PROC, "image/x-gimp-pat");
gimp_register_magic_load_handler (LOAD_PROC,
"pat",
"",
"20,string,GPAT");
gimp_install_procedure (SAVE_PROC,
"Saves Gimp pattern file (.PAT)",
"New Gimp patterns can be created by saving them "
"in the appropriate place with this plug-in.",
"Tim Newsome",
"Tim Newsome",
"1997",
N_("GIMP pattern"),
"RGB*, GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args), 0,
save_args, NULL);
gimp_plugin_icon_register (SAVE_PROC, GIMP_ICON_TYPE_STOCK_ID,
(const guint8 *) GIMP_STOCK_PATTERN);
gimp_register_file_handler_mime (SAVE_PROC, "image/x-gimp-pat");
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;
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;
INIT_I18N ();
if (strcmp (name, LOAD_PROC) == 0)
{
image_ID = load_image (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)
{
GimpParasite *parasite;
gint32 orig_image_ID;
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
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, NULL,
GIMP_EXPORT_CAN_HANDLE_GRAY |
GIMP_EXPORT_CAN_HANDLE_RGB |
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);
break;
default:
break;
}
parasite = gimp_image_parasite_find (orig_image_ID, "gimp-pattern-name");
if (parasite)
{
gchar *name = g_strndup (gimp_parasite_data (parasite),
gimp_parasite_data_size (parasite));
gimp_parasite_free (parasite);
strncpy (description, name, sizeof (description));
description[sizeof (description) - 1] = '\0';
}
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 (param[3].data.d_string, 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))
{
gimp_image_attach_new_parasite (orig_image_ID, "gimp-pattern-name",
GIMP_PARASITE_PERSISTENT,
strlen (description) + 1,
description);
}
else
{
gimp_image_parasite_detach (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 (const gchar *filename,
GError **error)
{
gint fd;
PatternHeader ph;
gchar *name;
gchar *temp;
guchar *buffer;
gint32 image_ID;
gint32 layer_ID;
GimpDrawable *drawable;
gint line;
GimpPixelRgn pixel_rgn;
GimpImageBaseType base_type;
GimpImageType image_type;
fd = g_open (filename, O_RDONLY | _O_BINARY, 0);
if (fd == -1)
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for reading: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return -1;
}
gimp_progress_init_printf (_("Opening '%s'"),
gimp_filename_to_utf8 (filename));
if (read (fd, &ph, sizeof (PatternHeader)) != sizeof (PatternHeader))
{
close (fd);
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))
{
close (fd);
return -1;
}
temp = g_new (gchar, ph.header_size - sizeof (PatternHeader));
if (read (fd, temp, ph.header_size - sizeof (PatternHeader)) !=
ph.header_size - sizeof (PatternHeader))
{
g_free (temp);
close (fd);
return -1;
}
name = gimp_any_to_utf8 (temp, -1,
_("Invalid UTF-8 string in pattern file '%s'."),
gimp_filename_to_utf8 (filename));
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;
break;
case 2:
base_type = GIMP_GRAY;
image_type = GIMP_GRAYA_IMAGE;
break;
case 3:
base_type = GIMP_RGB;
image_type = GIMP_RGB_IMAGE;
break;
case 4:
base_type = GIMP_RGB;
image_type = GIMP_RGBA_IMAGE;
break;
default:
g_message ("Unsupported pattern depth: %d\n"
"GIMP Patterns must be GRAY or RGB", ph.bytes);
return -1;
}
image_ID = gimp_image_new (ph.width, ph.height, base_type);
gimp_image_set_filename (image_ID, filename);
gimp_image_attach_new_parasite (image_ID, "gimp-pattern-name",
GIMP_PARASITE_PERSISTENT,
strlen (name) + 1, name);
layer_ID = gimp_layer_new (image_ID, name, ph.width, ph.height,
image_type, 100, GIMP_NORMAL_MODE);
gimp_image_add_layer (image_ID, layer_ID, 0);
g_free (name);
drawable = gimp_drawable_get (layer_ID);
gimp_pixel_rgn_init (&pixel_rgn, drawable,
0, 0, drawable->width, drawable->height,
TRUE, FALSE);
buffer = g_malloc (ph.width * ph.bytes);
for (line = 0; line < ph.height; line++)
{
if (read (fd, buffer, ph.width * ph.bytes) != ph.width * ph.bytes)
{
close (fd);
g_free (buffer);
return -1;
}
gimp_pixel_rgn_set_row (&pixel_rgn, buffer, 0, line, ph.width);
gimp_progress_update ((gdouble) line / (gdouble) ph.height);
}
gimp_drawable_flush (drawable);
return image_ID;
}
static gboolean
save_image (const gchar *filename,
gint32 image_ID,
gint32 drawable_ID,
GError **error)
{
gint fd;
PatternHeader ph;
guchar *buffer;
GimpDrawable *drawable;
gint line;
GimpPixelRgn pixel_rgn;
fd = g_open (filename, O_CREAT | O_TRUNC | O_WRONLY | _O_BINARY, 0666);
if (fd == -1)
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for writing: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return FALSE;
}
gimp_progress_init_printf (_("Saving '%s'"),
gimp_filename_to_utf8 (filename));
drawable = gimp_drawable_get (drawable_ID);
gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0, drawable->width,
drawable->height, FALSE, FALSE);
ph.header_size = g_htonl (sizeof (PatternHeader) + strlen (description) + 1);
ph.version = g_htonl (1);
ph.width = g_htonl (drawable->width);
ph.height = g_htonl (drawable->height);
ph.bytes = g_htonl (drawable->bpp);
ph.magic_number = g_htonl (GPATTERN_MAGIC);
if (write (fd, &ph, sizeof (PatternHeader)) != sizeof (PatternHeader))
{
close (fd);
return FALSE;
}
if (write (fd, description, strlen (description) + 1) != strlen (description) + 1)
{
close (fd);
return FALSE;
}
buffer = g_malloc (drawable->width * drawable->bpp);
if (buffer == NULL)
{
close (fd);
return FALSE;
}
for (line = 0; line < drawable->height; line++)
{
gimp_pixel_rgn_get_row (&pixel_rgn, buffer, 0, line, drawable->width);
if (write (fd, buffer, drawable->width * drawable->bpp) !=
drawable->width * drawable->bpp)
{
close (fd);
return FALSE;
}
gimp_progress_update ((gdouble) line / (gdouble) drawable->height);
}
g_free (buffer);
close (fd);
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_widget_set_size_request (entry, 200, -1);
gtk_entry_set_text (GTK_ENTRY (entry), description);
gtk_entry_set_activates_default (GTK_ENTRY (entry), TRUE);
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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