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gimp/plug-ins/common/gicon.c

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/* The GIMP -- an 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* saves and loads gimp icon files (For toolbox, etc)...
*/
#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>
#include "libgimp/stdplugins-intl.h"
typedef struct
{
gchar icon_name[256];
} GIconSaveVals;
typedef struct
{
gint run;
} GIconSaveInterface;
/* 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 void init_gtk (void);
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 */
};
static GIconSaveVals givals =
{
"gicon" /* icon_name */
};
static GIconSaveInterface giint =
{
FALSE /* run */
};
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_STRING, "icon_name", "The name of the icon" }
};
static gint nsave_args = sizeof (save_args) / sizeof (save_args[0]);
INIT_I18N();
gimp_install_procedure ("file_gicon_load",
"loads files of the .ico file format",
"FIXME: write help",
"Spencer Kimball",
"Spencer Kimball",
"1997",
"<Load>/GIcon",
NULL,
PROC_PLUG_IN,
nload_args, nload_return_vals,
load_args, load_return_vals);
gimp_install_procedure ("file_gicon_save",
"saves files in the .ico file format",
"FIXME: write help",
"Spencer Kimball",
"Spencer Kimball",
"1997",
"<Save>/GIcon",
"GRAY*",
PROC_PLUG_IN,
nsave_args, 0,
save_args, NULL);
gimp_register_load_handler ("file_gicon_load",
"ico",
"");
gimp_register_save_handler ("file_gicon_save",
"ico",
"");
}
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_gicon_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_gicon_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();
init_gtk ();
export = gimp_export_image (&image_ID, &drawable_ID, "GIcon",
(CAN_HANDLE_GRAY |
CAN_HANDLE_ALPHA));
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_gicon_save", &givals);
/* First acquire information with a dialog */
if (! save_dialog ())
status = STATUS_CANCEL;
break;
case RUN_NONINTERACTIVE:
/* Make sure all the arguments are there! */
if (nparams != 6)
{
status = STATUS_CALLING_ERROR;
}
else
{
strncpy (givals.icon_name, param[5].data.d_string, 256);
}
break;
case RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data ("file_gicon_save", &givals);
break;
default:
break;
}
if (status == STATUS_SUCCESS)
{
if (save_image (param[3].data.d_string, image_ID, drawable_ID))
{
/* Store persistent data */
gimp_set_data ("file_gicon_save", &givals, sizeof (GIconSaveVals));
}
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)
{
GDrawable *drawable;
GPixelRgn pixel_rgn;
FILE * fp;
gint32 image_ID;
gint32 layer_ID;
char name_buf[256];
char * data_buf;
unsigned char *dest;
int val;
int width, height;
int i, j;
/* Open the requested file */
if (! (fp = fopen (filename, "r")))
{
fprintf (stderr, "gicon: can't open \"%s\"\n", filename);
return -1;
}
/* Check the identifier string */
fscanf (fp, "/* %s icon image format -- S. Kimball, P. Mattis */\n", name_buf);
if (strcmp ("GIMP", name_buf))
{
fprintf (stderr, "Not a GIcon file: %s!\n", filename);
return -1;
}
/* Parse the icon name */
fscanf (fp, "/* Image name: %s */\n", name_buf);
/* Get the width and height */
fscanf (fp, "#define %s %d\n", name_buf, &width);
fscanf (fp, "#define %s %d\n", name_buf, &height);
fscanf (fp, "static char *%s [] = \n{\n", name_buf);
/* Get a new image structure */
image_ID = gimp_image_new (width, height, GRAY);
gimp_image_set_filename (image_ID, filename);
layer_ID = gimp_layer_new (image_ID, "Background", width, height,
GRAYA_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);
data_buf = g_new (char, width);
dest = g_new (guchar, width * 2);
for (i = 0; i < height; i++)
{
fscanf (fp, " \"%s\",\n", data_buf);
for (j = 0; j < width; j++)
{
val = data_buf[j];
if (val == '.')
{
dest[j*2+0] = 0;
dest[j*2+1] = 0; /* set alpha channel to transparent */
}
else
{
dest[j*2+0] = (255 * (val - 'a')) / 7;
dest[j*2+1] = 255; /* set alpha channel to opaque */
}
}
gimp_pixel_rgn_set_row (&pixel_rgn, dest, 0, i, width);
}
/* Clean up */
fclose (fp);
gimp_drawable_flush(drawable);
g_free (data_buf);
g_free (dest);
return image_ID;
}
static gint
save_image (char *filename,
gint32 image_ID,
gint32 drawable_ID)
{
GDrawable *drawable;
GPixelRgn pixel_rgn;
FILE * fp;
int i, j;
int w, h;
int has_alpha;
int val;
char ch;
unsigned char *src_buf, *src;
drawable = gimp_drawable_get (drawable_ID);
gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0, drawable->width,
drawable->height, FALSE, FALSE);
w = drawable->width;
h = drawable->height;
has_alpha = gimp_drawable_has_alpha (drawable_ID);
/* open the file for writing */
if ((fp = fopen (filename, "w")))
{
fprintf (fp, "/* GIMP icon image format -- S. Kimball, P. Mattis */\n");
fprintf (fp, "/* Image name: %s */\n", givals.icon_name);
fprintf (fp, "\n\n");
fprintf (fp, "#define %s_width %d\n", givals.icon_name, w);
fprintf (fp, "#define %s_height %d\n", givals.icon_name, h);
fprintf (fp, "static char *%s_bits [] = \n{\n", givals.icon_name);
/* write the brush data to the file */
src_buf = g_new (guchar, w * drawable->bpp);
for (i = 0; i < h; i++)
{
gimp_pixel_rgn_get_row (&pixel_rgn, src_buf, 0, i, w);
src = src_buf;
fprintf (fp, " \"");
for (j = 0; j < w; j++)
{
if (has_alpha && !src[1])
{
ch = '.';
}
else
{
val = (int) ((double) src[0] * 7.0 / 255.0 + 0.5);
ch = 'a' + val;
}
fputc (ch, fp);
src += drawable->bpp;
}
fprintf (fp, (i == (h-1)) ? "\"\n};\n" : "\",\n");
}
/* Clean up */
g_free (src_buf);
fclose (fp);
}
return TRUE;
}
static void
init_gtk (void)
{
gchar **argv;
gint argc;
argc = 1;
argv = g_new (gchar *, 1);
argv[0] = g_strdup ("gicon");
gtk_init (&argc, &argv);
gtk_rc_parse (gimp_gtkrc ());
}
static gint
save_dialog (void)
{
GtkWidget *dlg;
GtkWidget *table;
GtkWidget *entry;
dlg = gimp_dialog_new (_("Save as GIcon"), "gicon",
gimp_plugin_help_func, "filters/gicon.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 (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_usize (entry, 200, 0);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Icon Name:"), 1.0, 0.5,
entry, 1, FALSE);
gtk_entry_set_text (GTK_ENTRY (entry), givals.icon_name);
gtk_signal_connect (GTK_OBJECT (entry), "changed",
GTK_SIGNAL_FUNC (entry_callback),
givals.icon_name);
gtk_widget_show (entry);
gtk_widget_show (dlg);
gtk_main ();
gdk_flush ();
return giint.run;
}
static void
ok_callback (GtkWidget *widget,
gpointer data)
{
giint.run = TRUE;
gtk_widget_destroy (GTK_WIDGET (data));
}
static void
entry_callback (GtkWidget *widget,
gpointer data)
{
strncpy (givals.icon_name, gtk_entry_get_text (GTK_ENTRY (widget)), 256);
}
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