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gimp/plug-ins/common/gbr.c

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/*
* gbr plug-in version 1.00
* Loads/saves version 2 GIMP .gbr files, by Tim Newsome <drz@frody.bloke.com>
* Some bits stolen from the .99.7 source tree.
*
* Added in GBR version 1 support after learning that there wasn't a
* tool to read them.
* July 6, 1998 by Seth Burgess <sjburges@gimp.org>
*
* TODO: Give some better error reporting on not opening files/bad headers
* etc.
*/
#include "config.h"
#include <glib.h> /* Include early for G_OS_WIN32 */
#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>
#ifdef G_OS_WIN32
#include <io.h>
#endif
#ifndef _O_BINARY
#define _O_BINARY 0
#endif
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "app/brush_header.h"
#include "libgimp/stdplugins-intl.h"
/* Declare local data types
*/
typedef struct
{
gchar description[256];
gint spacing;
} t_info;
t_info info =
{ /* Initialize to this, change if non-interactive later */
"GIMP Brush",
10
};
gint run_flag = FALSE;
/* Declare some local functions.
*/
static void query (void);
static void run (gchar *name,
gint nparams,
GParam *param,
gint *nreturn_vals,
GParam **return_vals);
static gint32 load_image (gchar *filename);
static gint save_image (gchar *filename,
gint32 image_ID,
gint32 drawable_ID);
static gint save_dialog (void);
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 (void)
{
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 gint nload_args = sizeof (load_args) / sizeof (load_args[0]);
static gint 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_INT32, "spacing", "Spacing of the brush" },
{ PARAM_STRING, "description", "Short description of the brush" }
};
static gint nsave_args = sizeof (save_args) / sizeof (save_args[0]);
gimp_install_procedure ("file_gbr_load",
"loads files of the .gbr file format",
"FIXME: write help",
"Tim Newsome",
"Tim Newsome",
"1997",
"<Load>/GBR",
NULL,
PROC_PLUG_IN,
nload_args, nload_return_vals,
load_args, load_return_vals);
gimp_install_procedure ("file_gbr_save",
"saves files in the .gbr file format",
"Yeah!",
"Tim Newsome",
"Tim Newsome",
"1997",
"<Save>/GBR",
"GRAY",
PROC_PLUG_IN,
nsave_args, 0,
save_args, NULL);
gimp_register_magic_load_handler ("file_gbr_load",
"gbr",
"",
"20,string,GIMP");
gimp_register_save_handler ("file_gbr_save",
"gbr",
"");
}
static void
run (gchar *name,
gint nparams,
GParam *param,
gint *nreturn_vals,
GParam **return_vals)
{
static GParam values[2];
GRunModeType run_mode;
GStatusType status = STATUS_SUCCESS;
gint32 image_ID;
gint32 drawable_ID;
GimpExportReturnType export = EXPORT_CANCEL;
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = PARAM_STATUS;
values[0].data.d_status = STATUS_EXECUTION_ERROR;
if (strcmp (name, "file_gbr_load") == 0)
{
image_ID = load_image (param[1].data.d_string);
if (image_ID != -1)
{
*nreturn_vals = 2;
values[1].type = PARAM_IMAGE;
values[1].data.d_image = image_ID;
}
else
{
status = STATUS_EXECUTION_ERROR;
}
}
else if (strcmp (name, "file_gbr_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_I18N_UI();
gimp_ui_init ("gbr", FALSE);
export = gimp_export_image (&image_ID, &drawable_ID, "GBR",
CAN_HANDLE_GRAY);
if (export == EXPORT_CANCEL)
{
values[0].data.d_status = STATUS_CANCEL;
return;
}
break;
default:
INIT_I18N();
break;
}
switch (run_mode)
{
case RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data ("file_gbr_save", &info);
if (! save_dialog ())
status = STATUS_CANCEL;
break;
case RUN_NONINTERACTIVE: /* FIXME - need a real RUN_NONINTERACTIVE */
if (nparams != 7)
{
status = STATUS_CALLING_ERROR;
}
else
{
info.spacing = (param[5].data.d_int32);
strncpy (info.description, param[6].data.d_string, 256);
}
break;
case RUN_WITH_LAST_VALS:
gimp_get_data ("file_gbr_save", &info);
break;
}
if (status == STATUS_SUCCESS)
{
if (save_image (param[3].data.d_string, image_ID, drawable_ID))
{
gimp_set_data ("file_gbr_save", &info, sizeof(info));
}
else
{
status = STATUS_EXECUTION_ERROR;
}
}
if (export == EXPORT_EXPORT)
gimp_image_delete (image_ID);
}
else
{
status = STATUS_CALLING_ERROR;
}
values[0].data.d_status = status;
}
static gint32
load_image (gchar *filename)
{
char *temp;
int fd;
BrushHeader ph;
gchar *buffer;
gint32 image_ID, layer_ID;
GDrawable *drawable;
gint line;
GPixelRgn pixel_rgn;
int version_extra;
temp = g_strdup_printf (_("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);
ph.spacing = g_ntohl(ph.spacing);
/* How much extra to add ot the header seek - 1 needs a bit more */
version_extra = 0;
if (ph.version == 1)
{
/* Version 1 didn't know about spacing */
ph.spacing=25;
/* And we need to rewind the handle a bit too */
lseek (fd, -8, SEEK_CUR);
version_extra=8;
}
/* Version 1 didn't know about magic either */
if ((ph.version != 1 &&
(ph.magic_number != GBRUSH_MAGIC || ph.version != 2)) ||
ph.header_size <= sizeof(ph)) {
close(fd);
return -1;
}
if (lseek(fd, ph.header_size - sizeof(ph) + version_extra, 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, (guchar *)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;
BrushHeader ph;
unsigned char *buffer;
GDrawable *drawable;
gint line;
GPixelRgn pixel_rgn;
char *temp;
if (gimp_drawable_type(drawable_ID) != GRAY_IMAGE)
return FALSE;
temp = g_strdup_printf (_("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)
{
g_message( _("Unable to open %s"), filename);
return FALSE;
}
ph.header_size = g_htonl(sizeof(ph) + strlen(info.description) + 1);
ph.version = g_htonl(2);
ph.width = g_htonl(drawable->width);
ph.height = g_htonl(drawable->height);
ph.bytes = g_htonl(drawable->bpp);
ph.magic_number = g_htonl(GBRUSH_MAGIC);
ph.spacing = g_htonl(info.spacing);
if (write(fd, &ph, sizeof(ph)) != sizeof(ph))
{
close(fd);
return FALSE;
}
if (write(fd, info.description, strlen(info.description) + 1) !=
strlen(info.description) + 1)
{
close(fd);
return FALSE;
}
buffer = g_malloc(drawable->width * drawable->bpp);
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((double) line / (double) drawable->height);
}
g_free(buffer);
close(fd);
return TRUE;
}
static gint
save_dialog (void)
{
GtkWidget *dlg;
GtkWidget *table;
GtkWidget *entry;
GtkWidget *spinbutton;
GtkObject *adj;
dlg = gimp_dialog_new (_("Save as Brush"), "gbr",
gimp_standard_help_func, "filters/gbr.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), ok_callback,
NULL, NULL, NULL, TRUE, FALSE,
_("Cancel"), gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
NULL);
gtk_signal_connect (GTK_OBJECT(dlg), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit),
NULL);
/* The main table */
table = gtk_table_new (2, 2, FALSE);
gtk_container_set_border_width (GTK_CONTAINER (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), table, TRUE, TRUE, 0);
gtk_widget_show (table);
spinbutton = gimp_spin_button_new (&adj,
info.spacing, 1, 1000, 1, 10, 0, 1, 0);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Spacing:"), 1.0, 0.5,
spinbutton, 1, TRUE);
gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
&info.spacing);
entry = gtk_entry_new ();
gtk_widget_set_usize (entry, 200, 0);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Description:"), 1.0, 0.5,
entry, 1, FALSE);
gtk_entry_set_text (GTK_ENTRY (entry), info.description);
gtk_signal_connect (GTK_OBJECT (entry), "changed",
GTK_SIGNAL_FUNC (entry_callback),
info.description);
gtk_widget_show (dlg);
gtk_main ();
gdk_flush ();
return run_flag;
}
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)
{
strncpy (info.description, gtk_entry_get_text (GTK_ENTRY (widget)), 256);
}
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