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gimp/plug-ins/common/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>
* Some bits stolen from the .99.7 source tree.
* Updated to fix various outstanding problems, brief help -- Nick Lamb
* njl195@zepler.org.uk, April 2000
*/
#include "config.h"
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#ifdef G_OS_WIN32
#include <io.h>
#endif
#ifndef _O_BINARY
#define _O_BINARY 0
#endif
#include "app/core/gimppattern-header.h"
/* 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);
static gboolean save_image (const gchar *filename,
gint32 image_ID,
gint32 drawable_ID);
static gboolean save_dialog (void);
static void entry_callback (GtkWidget *widget,
gpointer data);
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 GimpParamDef load_args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ GIMP_PDB_STRING, "filename", "The name of the file to load" },
{ GIMP_PDB_STRING, "raw_filename", "The name of the file to load" }
};
static GimpParamDef load_return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Output image" }
};
static GimpParamDef save_args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ 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 ("file_pat_load",
"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",
"<Load>/PAT",
NULL,
GIMP_PLUGIN,
G_N_ELEMENTS (load_args),
G_N_ELEMENTS (load_return_vals),
load_args, load_return_vals);
gimp_install_procedure ("file_pat_save",
"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",
"<Save>/PAT",
"RGB*, GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args), 0,
save_args, NULL);
gimp_register_magic_load_handler ("file_pat_load",
"pat",
"",
"20,string,GPAT");
gimp_register_save_handler ("file_pat_save",
"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;
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, "file_pat_load") == 0)
{
image_ID = load_image (param[1].data.d_string);
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, "file_pat_save") == 0)
{
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
/* eventually export the image */
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
case GIMP_RUN_WITH_LAST_VALS:
gimp_ui_init ("pat", FALSE);
export = gimp_export_image (&image_ID, &drawable_ID, "PAT",
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;
}
break;
default:
break;
}
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data ("file_pat_save", description);
if (!save_dialog ())
status = GIMP_PDB_CANCEL;
break;
case GIMP_RUN_NONINTERACTIVE:
if (nparams != 6)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
strcpy (description, param[5].data.d_string);
}
break;
case GIMP_RUN_WITH_LAST_VALS:
gimp_get_data ("file_pat_save", description);
break;
}
if (status == GIMP_PDB_SUCCESS)
{
if (save_image (param[3].data.d_string, image_ID, drawable_ID))
{
gimp_set_data ("file_pat_save", description, 256);
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image_ID);
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
values[0].data.d_status = status;
}
static gint32
load_image (const gchar *filename)
{
gchar *temp;
gint fd;
PatternHeader ph;
guchar *buffer;
gint32 image_ID;
gint32 layer_ID;
GimpDrawable *drawable;
gint line;
GimpPixelRgn pixel_rgn;
GimpImageBaseType base_type;
GimpImageType image_type;
fd = open (filename, O_RDONLY | _O_BINARY);
if (fd == -1)
{
g_message (_("Could not open '%s' for reading: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return -1;
}
temp = g_strdup_printf (_("Opening '%s'..."),
gimp_filename_to_utf8 (filename));
gimp_progress_init (temp);
g_free (temp);
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;
}
if (lseek (fd, ph.header_size - sizeof (PatternHeader), SEEK_CUR) != ph.header_size)
{
close (fd);
return -1;
}
/* 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);
layer_ID = gimp_layer_new (image_ID, _("Background"), ph.width, ph.height,
image_type, 100, GIMP_NORMAL_MODE);
gimp_image_add_layer (image_ID, layer_ID, 0);
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)
{
gint fd;
PatternHeader ph;
guchar *buffer;
GimpDrawable *drawable;
gint line;
GimpPixelRgn pixel_rgn;
gchar *temp;
fd = open (filename, O_CREAT | O_TRUNC | O_WRONLY | _O_BINARY, 0644);
if (fd == -1)
{
g_message (_("Could not open '%s' for writing: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return FALSE;
}
temp = g_strdup_printf (_("Saving '%s'..."),
gimp_filename_to_utf8 (filename));
gimp_progress_init (temp);
g_free (temp);
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 *dlg;
GtkWidget *table;
GtkWidget *entry;
gboolean run;
dlg = gimp_dialog_new (_("Save as Pattern"), "pat",
NULL, 0,
gimp_standard_help_func, "file-pat-save",
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OK, GTK_RESPONSE_OK,
NULL);
/* The main table */
table = gtk_table_new (1, 2, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_container_set_border_width (GTK_CONTAINER (table), 6);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), 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);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Description:"), 1.0, 0.5,
entry, 1, FALSE);
gtk_widget_show (entry);
g_signal_connect (entry, "changed",
G_CALLBACK (entry_callback),
description);
gtk_widget_show (dlg);
run = (gimp_dialog_run (GIMP_DIALOG (dlg)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dlg);
return run;
}
static void
entry_callback (GtkWidget *widget,
gpointer data)
{
if (data == description)
strncpy (description, gtk_entry_get_text (GTK_ENTRY (widget)), 256);
}
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