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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.
*/
#include "config.h"
#include <setjmp.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#ifdef G_OS_WIN32
#include <io.h>
#endif
#ifndef _O_BINARY
#define _O_BINARY 0
#endif
#include "app/pattern_header.h"
/* Declare local data types
*/
char description[256] = "GIMP Pattern";
int run_flag = 0;
/* Declare some local functions.
*/
static void query (void);
static void run (char *name,
int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals);
static gint32 load_image (char *filename);
static gint save_image (char *filename,
gint32 image_ID,
gint32 drawable_ID);
static void init_gtk (void);
static gint save_dialog (void);
static void close_callback (GtkWidget * widget, gpointer data);
static void ok_callback (GtkWidget * widget, gpointer data);
static void entry_callback (GtkWidget * widget, gpointer data);
GPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query ()
{
static GParamDef load_args[] =
{
{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
{ PARAM_STRING, "filename", "The name of the file to load" },
{ PARAM_STRING, "raw_filename", "The name of the file to load" },
};
static GParamDef load_return_vals[] =
{
{ PARAM_IMAGE, "image", "Output image" },
};
static int nload_args = sizeof (load_args) / sizeof (load_args[0]);
static int nload_return_vals = sizeof (load_return_vals) / sizeof (load_return_vals[0]);
static GParamDef save_args[] =
{
{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
{ PARAM_IMAGE, "image", "Input image" },
{ PARAM_DRAWABLE, "drawable", "Drawable to save" },
{ PARAM_STRING, "filename", "The name of the file to save the image in" },
{ PARAM_STRING, "raw_filename", "The name of the file to save the image in" },
{ PARAM_STRING, "description", "Short description of the pattern" },
};
static int nsave_args = sizeof (save_args) / sizeof (save_args[0]);
gimp_install_procedure ("file_pat_load",
"loads files of the .pat file format",
"FIXME: write help",
"Tim Newsome",
"Tim Newsome",
"1997",
"<Load>/PAT",
NULL,
PROC_PLUG_IN,
nload_args, nload_return_vals,
load_args, load_return_vals);
gimp_install_procedure ("file_pat_save",
"saves files in the .pat file format",
"Yeah!",
"Tim Newsome",
"Tim Newsome",
"1997",
"<Save>/PAT",
"RGB*, GRAY*",
PROC_PLUG_IN,
nsave_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 (char *name,
int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals)
{
static GParam values[2];
GRunModeType run_mode;
gint32 image_ID;
gint32 drawable_ID;
GimpExportReturnType export = EXPORT_CANCEL;
GStatusType status = STATUS_SUCCESS;
run_mode = param[0].data.d_int32;
*return_vals = values;
values[0].type = PARAM_STATUS;
values[0].data.d_status = STATUS_CALLING_ERROR;
values[1].type = PARAM_IMAGE;
values[1].data.d_image = -1;
if (strcmp (name, "file_pat_load") == 0)
{
image_ID = load_image (param[1].data.d_string);
if (image_ID != -1)
{
values[0].data.d_status = STATUS_SUCCESS;
values[1].data.d_image = image_ID;
}
else
{
values[0].data.d_status = STATUS_EXECUTION_ERROR;
}
*nreturn_vals = 2;
}
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 RUN_INTERACTIVE:
case RUN_WITH_LAST_VALS:
init_gtk ();
export = gimp_export_image (&image_ID, &drawable_ID, "PAT",
(CAN_HANDLE_RGB | CAN_HANDLE_GRAY | CAN_HANDLE_ALPHA));
if (export == EXPORT_CANCEL)
{
values[0].data.d_status = STATUS_EXECUTION_ERROR;
return;
}
break;
default:
break;
}
switch (run_mode)
{
case RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data("file_pat_save", description);
if (!save_dialog())
return;
break;
case RUN_NONINTERACTIVE:
if (nparams != 6)
status = STATUS_CALLING_ERROR;
else
strcpy(description, param[5].data.d_string);
case RUN_WITH_LAST_VALS:
gimp_get_data ("file_pat_save", description);
break;
}
if (save_image (param[3].data.d_string, image_ID, drawable_ID))
{
gimp_set_data ("file_pat_save", description, 256);
values[0].data.d_status = STATUS_SUCCESS;
}
else
values[0].data.d_status = STATUS_EXECUTION_ERROR;
*nreturn_vals = 1;
if (export == EXPORT_EXPORT)
gimp_image_delete (image_ID);
}
}
static gint32
load_image (char *filename)
{
char *temp;
int fd;
PatternHeader ph;
guchar *buffer;
gint32 image_ID, layer_ID;
GDrawable *drawable;
gint line;
GPixelRgn pixel_rgn;
temp = g_malloc (strlen (filename) + 11);
sprintf (temp, "Loading %s:", filename);
gimp_progress_init (temp);
g_free (temp);
fd = open (filename, O_RDONLY | _O_BINARY);
if (fd == -1)
return -1;
if (read(fd, &ph, sizeof(ph)) != sizeof(ph))
{
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(ph))
{
close(fd);
return -1;
}
if (lseek(fd, ph.header_size - sizeof(ph), 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.
*/
image_ID = gimp_image_new(ph.width, ph.height, (ph.bytes >= 3) ? RGB : GRAY);
gimp_image_set_filename(image_ID, filename);
layer_ID = gimp_layer_new(image_ID, "Background", ph.width, ph.height,
(ph.bytes >= 3) ? RGB_IMAGE : GRAY_IMAGE, 100, 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 ((double) line / (double) ph.height);
}
gimp_drawable_flush (drawable);
return image_ID;
}
static gint
save_image (char *filename,
gint32 image_ID,
gint32 drawable_ID)
{
int fd;
PatternHeader ph;
unsigned char *buffer;
GDrawable *drawable;
gint line;
GPixelRgn pixel_rgn;
char *temp;
temp = g_malloc (strlen (filename) + 10);
sprintf(temp, "Saving %s:", 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);
fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY | _O_BINARY, 0644);
if (fd == -1)
return 0;
ph.header_size = g_htonl (sizeof (ph) + 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 (ph)) != sizeof(ph))
{
close(fd);
return 0;
}
if (write (fd, description, strlen (description) + 1) != strlen (description) + 1)
{
close(fd);
return 0;
}
buffer = g_malloc (drawable->width * drawable->bpp);
if (buffer == NULL)
{
close(fd);
return 0;
}
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 0;
}
gimp_progress_update ((double) line / (double) drawable->height);
}
g_free (buffer);
close (fd);
return 1;
}
static void
init_gtk ()
{
gchar **argv;
gint argc;
argc = 1;
argv = g_new (gchar *, 1);
argv[0] = g_strdup ("pat");
gtk_init (&argc, &argv);
gtk_rc_parse (gimp_gtkrc ());
}
static gint
save_dialog ()
{
GtkWidget *dlg;
GtkWidget *button;
GtkWidget *label;
GtkWidget *entry;
GtkWidget *table;
dlg = gtk_dialog_new();
gtk_window_set_title(GTK_WINDOW(dlg), "Save As Pattern");
gtk_window_position(GTK_WINDOW(dlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect(GTK_OBJECT(dlg), "destroy",
(GtkSignalFunc) close_callback, NULL);
/* Action area */
button = gtk_button_new_with_label("OK");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect(GTK_OBJECT(button), "clicked",
(GtkSignalFunc) ok_callback,
dlg);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->action_area), button, TRUE, TRUE, 0);
gtk_widget_grab_default(button);
gtk_widget_show(button);
button = gtk_button_new_with_label("Cancel");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect_object(GTK_OBJECT(button), "clicked",
(GtkSignalFunc) gtk_widget_destroy,
GTK_OBJECT(dlg));
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->action_area), button, TRUE, TRUE, 0);
gtk_widget_show(button);
/* The main table */
/* Set its size (y, x) */
table = gtk_table_new(1, 2, FALSE);
gtk_container_border_width(GTK_CONTAINER(table), 10);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->vbox), table, TRUE, TRUE, 0);
gtk_widget_show(table);
gtk_table_set_row_spacings(GTK_TABLE(table), 10);
gtk_table_set_col_spacings(GTK_TABLE(table), 10);
/**********************
* label
**********************/
label = gtk_label_new("Description:");
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show(label);
/************************
* The entry
************************/
entry = gtk_entry_new();
gtk_table_attach(GTK_TABLE(table), entry, 1, 2, 0, 1, GTK_EXPAND | GTK_FILL,
GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_set_usize(entry, 200, 0);
gtk_entry_set_text(GTK_ENTRY(entry), description);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc) entry_callback, description);
gtk_widget_show(entry);
gtk_widget_show(dlg);
gtk_main();
gdk_flush();
return run_flag;
}
static void
close_callback (GtkWidget *widget,
gpointer data)
{
gtk_main_quit();
}
static void
ok_callback (GtkWidget *widget,
gpointer data)
{
run_flag = 1;
gtk_widget_destroy(GTK_WIDGET(data));
}
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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