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

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/* Plug-in to load and save .gih (GIMP Brush Pipe) files.
*
* Copyright (C) 1999 Tor Lillqvist
* Copyright (C) 2000 Jens Lautenbacher, Sven Neumann
*
* 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/>.
*/
/* Example of how to call file_gih_save from script-fu:
(let ((ranks (cons-array 1 'byte)))
(aset ranks 0 12)
(file-gih-save 1
img
drawable
"foo.gih"
"foo.gih"
100
"test brush"
125
125
3
4
1
ranks
1
'("random")))
*/
#include "config.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <glib/gstdio.h>
#include <glib.h>
#ifdef G_OS_WIN32
#include <io.h>
#endif
#ifndef _O_BINARY
#define _O_BINARY 0
#endif
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include <libgimpbase/gimpparasiteio.h>
#include "app/core/gimpbrush-header.h"
#include "app/core/gimppattern-header.h"
#include "libgimp/stdplugins-intl.h"
#define LOAD_PROC "file-gih-load"
#define SAVE_PROC "file-gih-save"
#define PLUG_IN_BINARY "file-gih"
#define DUMMY_PATTERN_NAME "x"
#define MAXDESCLEN 256
/* Parameters applicable each time we save a gih, saved in the
* main gimp application between invocations of this plug-in.
*/
static struct
{
guint spacing;
gchar description[MAXDESCLEN+1];
} info =
/* Initialize to this, change if non-interactive later */
{
20,
"GIMP Brush Pipe"
};
static gint num_layers = 0;
static const gchar *selection_modes[] = { "incremental",
"angular",
"random",
"velocity",
"pressure",
"xtilt",
"ytilt" };
static GimpPixPipeParams gihparams;
typedef struct
{
GimpOrientationType orientation;
gint32 image;
gint32 toplayer;
gint nguides;
gint32 *guides;
gint *value;
GtkWidget *count_label; /* Corresponding count adjustment, */
gint *count; /* cols or rows */
gint *other_count; /* and the other one */
GtkObject *ncells;
GtkObject *rank0;
GtkWidget *warning_label;
GtkWidget *rank_entry[GIMP_PIXPIPE_MAXDIM];
GtkWidget *mode_entry[GIMP_PIXPIPE_MAXDIM];
} SizeAdjustmentData;
/* static gint32 *vguides, *hguides; */
/* static gint nvguides = 0, nhguides = 0; */
/* Declare some local functions.
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gint32 gih_load_image (const gchar *filename,
GError **error);
static gboolean gih_load_one_brush (gint fd,
gint32 image_ID);
static gboolean gih_save_dialog (gint32 image_ID);
static gboolean gih_save_one_brush (gint fd,
GimpPixelRgn *pixel_rgn,
const gchar *name);
static gboolean gih_save_image (const gchar *filename,
gint32 image_ID,
gint32 orig_image_ID,
gint32 drawable_ID,
GError **error);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query (void)
{
static const GimpParamDef gih_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 brush pipe in" },
{ GIMP_PDB_STRING, "raw-filename", "The name of the file to save the brush pipe in" },
{ GIMP_PDB_INT32, "spacing", "Spacing of the brush" },
{ GIMP_PDB_STRING, "description", "Short description of the brush pipe" },
{ GIMP_PDB_INT32, "cell-width", "Width of the brush cells" },
{ GIMP_PDB_INT32, "cell-height", "Width of the brush cells" },
{ GIMP_PDB_INT8, "display-cols", "Display column number" },
{ GIMP_PDB_INT8, "display-rows", "Display row number" },
{ GIMP_PDB_INT32, "dimension", "Dimension of the brush pipe" },
/* The number of rank and sel args depend on the dimension */
{ GIMP_PDB_INT8ARRAY, "rank", "Ranks of the dimensions" },
{ GIMP_PDB_INT32, "dimension", "Dimension (again)" },
{ GIMP_PDB_STRINGARRAY, "sel", "Selection modes" }
};
static const GimpParamDef gih_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 gih_load_return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Output image" }
};
gimp_install_procedure (LOAD_PROC,
"loads images in GIMP brush pipe format",
"This plug-in loads a GIMP brush pipe as an image.",
"Jens Lautenbacher, Sven Neumann",
"Jens Lautenbacher, Sven Neumann",
"2000",
N_("GIMP brush (animated)"),
NULL,
GIMP_PLUGIN,
G_N_ELEMENTS (gih_load_args),
G_N_ELEMENTS (gih_load_return_vals),
gih_load_args, gih_load_return_vals);
gimp_plugin_icon_register (LOAD_PROC, GIMP_ICON_TYPE_STOCK_ID,
(const guint8 *) GIMP_STOCK_BRUSH);
gimp_register_file_handler_mime (LOAD_PROC, "image/x-gimp-gih");
gimp_register_magic_load_handler (LOAD_PROC,
"gih",
"",
"");
gimp_install_procedure (SAVE_PROC,
"saves images in GIMP brush pipe format",
"This plug-in saves an image in the GIMP brush pipe format. For a colored brush pipe, RGBA layers are used, otherwise the layers should be grayscale masks. The image can be multi-layered, and additionally the layers can be divided into a rectangular array of brushes.",
"Tor Lillqvist",
"Tor Lillqvist",
"1999",
N_("GIMP brush (animated)"),
"RGB*, GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (gih_save_args), 0,
gih_save_args, NULL);
gimp_plugin_icon_register (SAVE_PROC, GIMP_ICON_TYPE_STOCK_ID,
(const guint8 *) GIMP_STOCK_BRUSH);
gimp_register_file_handler_mime ("file_gih_save", "image/x-gimp-gih");
gimp_register_save_handler (SAVE_PROC,
"gih",
"");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
GimpParasite *pipe_parasite;
gint32 image_ID;
gint32 orig_image_ID;
gint32 drawable_ID;
gint i;
GimpExportReturn export = GIMP_EXPORT_CANCEL;
GError *error = NULL;
run_mode = param[0].data.d_int32;
*return_vals = values;
*nreturn_vals = 1;
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 = gih_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)
{
image_ID = orig_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 (PLUG_IN_BINARY, FALSE);
export = gimp_export_image (&image_ID, &drawable_ID, NULL,
GIMP_EXPORT_CAN_HANDLE_RGB |
GIMP_EXPORT_CAN_HANDLE_GRAY |
GIMP_EXPORT_CAN_HANDLE_ALPHA |
GIMP_EXPORT_CAN_HANDLE_LAYERS);
if (export == GIMP_EXPORT_CANCEL)
{
values[0].data.d_status = GIMP_PDB_CANCEL;
return;
}
break;
default:
break;
}
g_free (gimp_image_get_layers (image_ID, &num_layers));
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data (SAVE_PROC, &info);
gimp_pixpipe_params_init (&gihparams);
/* Setup default values */
if (gihparams.rows < 1) gihparams.rows = 1;
if (gihparams.cols < 1) gihparams.cols = 1;
gihparams.ncells = (num_layers * gihparams.rows * gihparams.cols);
if (gihparams.cellwidth == 1 && gihparams.cellheight == 1)
{
gihparams.cellwidth =
gimp_image_width (image_ID) / gihparams.cols;
gihparams.cellheight =
gimp_image_height (image_ID) / gihparams.rows;
}
pipe_parasite =
gimp_image_parasite_find (orig_image_ID,
"gimp-brush-pipe-parameters");
if (pipe_parasite)
gimp_pixpipe_params_parse (gimp_parasite_data (pipe_parasite),
&gihparams);
if (!gih_save_dialog (image_ID))
status = GIMP_PDB_CANCEL;
break;
case GIMP_RUN_NONINTERACTIVE:
if (nparams != 15)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
info.spacing = param[5].data.d_int32;
strncpy (info.description, param[6].data.d_string, MAXDESCLEN);
info.description[MAXDESCLEN] = 0;
gimp_pixpipe_params_init (&gihparams);
gihparams.cellwidth = param[7].data.d_int32;
gihparams.cellheight = param[8].data.d_int32;
gihparams.cols = param[9].data.d_int8;
gihparams.rows = param[10].data.d_int8;
gihparams.dim = param[11].data.d_int32;
gihparams.ncells = 1;
if (param[13].data.d_int32 != gihparams.dim)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
for (i = 0; i < gihparams.dim; i++)
{
gihparams.rank[i] = param[12].data.d_int8array[i];
gihparams.selection[i] = g_strdup (param[14].data.d_stringarray[i]);
gihparams.ncells *= gihparams.rank[i];
}
}
}
break;
case GIMP_RUN_WITH_LAST_VALS:
gimp_get_data (SAVE_PROC, &info);
pipe_parasite =
gimp_image_parasite_find (orig_image_ID,
"gimp-brush-pipe-parameters");
gimp_pixpipe_params_init (&gihparams);
if (pipe_parasite)
gimp_pixpipe_params_parse (gimp_parasite_data (pipe_parasite),
&gihparams);
break;
}
if (status == GIMP_PDB_SUCCESS)
{
if (gih_save_image (param[3].data.d_string,
image_ID, orig_image_ID, drawable_ID, &error))
{
gimp_set_data (SAVE_PROC, &info, sizeof (info));
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image_ID);
}
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;
}
/* load routines */
static gboolean
gih_load_one_brush (gint fd,
gint32 image_ID)
{
gchar *name = NULL;
BrushHeader bh;
guchar *brush_buf = NULL;
gint32 layer_ID;
GimpDrawable *drawable;
GimpPixelRgn pixel_rgn;
gint version_extra;
gint bn_size;
GimpImageType image_type;
gint width, height;
gint new_width, new_height;
g_return_val_if_fail (fd != -1, FALSE);
g_return_val_if_fail (image_ID != -1, FALSE);
if (read (fd, &bh, sizeof (bh)) != sizeof (bh))
return FALSE;
/* rearrange the bytes in each unsigned int */
bh.header_size = g_ntohl (bh.header_size);
bh.version = g_ntohl (bh.version);
bh.width = g_ntohl (bh.width);
bh.height = g_ntohl (bh.height);
bh.bytes = g_ntohl (bh.bytes);
bh.magic_number = g_ntohl (bh.magic_number);
bh.spacing = g_ntohl (bh.spacing);
/* How much extra to add to the header seek - 1 needs a bit more */
version_extra = 0;
if (bh.version == 1)
{
/* Version 1 didn't know about spacing */
bh.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 ((bh.version != 1 &&
(bh.magic_number != GBRUSH_MAGIC || bh.version != 2)) ||
bh.header_size <= sizeof (bh))
{
return FALSE;
}
if ((bn_size = (bh.header_size - sizeof (bh))) > 0)
{
name = g_new (gchar, bn_size);
if ((read (fd, name, bn_size)) < bn_size)
{
g_message (_("Error in GIMP brush pipe file."));
g_free (name);
return FALSE;
}
}
else
{
name = g_strdup (_("Unnamed"));
}
/* Now there's just raw data left. */
brush_buf = g_malloc (bh.width * bh.height * bh.bytes);
if (read (fd, brush_buf,
bh.width * bh.height * bh.bytes) != bh.width * bh.height * bh.bytes)
{
g_free (brush_buf);
g_free (name);
return FALSE;
}
if (bh.bytes == 1)
{
PatternHeader ph;
/* For backwards-compatibility, check if a pattern follows.
The obsolete .gpb format did it this way. */
if (read (fd, &ph, sizeof(ph)) == sizeof(ph))
{
/* 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) &&
ph.bytes == 3 && ph.width == bh.width && ph.height == bh.height &&
lseek (fd, ph.header_size - sizeof (ph), SEEK_CUR) > 0)
{
guchar *plain_brush = brush_buf;
gint i;
bh.bytes = 4;
brush_buf = g_malloc (4 * bh.width * bh.height);
for (i = 0; i < ph.width * ph.height; i++)
{
if (read (fd, brush_buf + i * 4, 3) != 3)
{
g_free (name);
g_free (plain_brush);
g_free (brush_buf);
return FALSE;
}
brush_buf[i * 4 + 3] = plain_brush[i];
}
g_free (plain_brush);
}
else if (lseek (fd, - ((off_t) sizeof (PatternHeader)), SEEK_CUR) < 0)
{
g_message (_("GIMP brush file appears to be corrupted."));
g_free (name);
g_free (brush_buf);
return FALSE;
}
}
}
/*
* Create a new layer of the proper size.
*/
switch (bh.bytes)
{
case 1:
image_type = GIMP_GRAY_IMAGE;
break;
case 4:
image_type = GIMP_RGBA_IMAGE;
if (gimp_image_base_type (image_ID) == GIMP_GRAY)
gimp_image_convert_rgb (image_ID);
break;
default:
g_message ("Unsupported brush depth: %d\n"
"GIMP Brushes must be GRAY or RGBA\n",
bh.bytes);
return FALSE;
}
new_width = width = gimp_image_width (image_ID);
new_height = height = gimp_image_height (image_ID);
if (bh.width > width || bh.height > height)
{
new_width = MAX (width, bh.width);
new_height = MAX (height, bh.height);
gimp_image_resize (image_ID,
new_width, new_height,
(width - new_width) / 2, (height - new_height) / 2);
}
layer_ID = gimp_layer_new (image_ID, name,
bh.width, bh.height,
image_type, 100, GIMP_NORMAL_MODE);
g_free (name);
if (layer_ID != -1)
{
gimp_image_add_layer (image_ID, layer_ID, num_layers++);
gimp_layer_set_offsets (layer_ID,
(new_width - bh.width) / 2,
(new_height - bh.height) / 2);
drawable = gimp_drawable_get (layer_ID);
gimp_pixel_rgn_init (&pixel_rgn, drawable,
0, 0, drawable->width, drawable->height,
TRUE, FALSE);
gimp_pixel_rgn_set_rect (&pixel_rgn,
brush_buf, 0, 0, bh.width, bh.height);
if (image_type == GIMP_GRAY_IMAGE)
{
gimp_invert (layer_ID);
}
}
g_free (brush_buf);
return TRUE;
}
static gint32
gih_load_image (const gchar *filename,
GError **error)
{
gint fd;
gint i;
gint32 image_ID;
GString *buffer;
gchar c;
gchar *name = NULL;
gint num_of_brushes = 0;
gchar *paramstring;
GimpParasite *pipe_parasite;
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));
/* The file format starts with a painfully simple text header */
/* get the name */
buffer = g_string_new (NULL);
while (read (fd, &c, 1) == 1 && c != '\n' && buffer->len < 1024)
g_string_append_c (buffer, c);
if (buffer->len > 0 && buffer->len < 1024)
name = buffer->str;
g_string_free (buffer, FALSE);
if (!name)
{
g_message ("Couldn't read name for brush pipe from '%s'",
gimp_filename_to_utf8 (filename));
close (fd);
return -1;
}
/* get the number of brushes */
buffer = g_string_new (NULL);
while (read (fd, &c, 1) == 1 && c != '\n' && buffer->len < 1024)
g_string_append_c (buffer, c);
if (buffer->len > 0 && buffer->len < 1024)
{
num_of_brushes = strtol (buffer->str, &paramstring, 10);
}
if (num_of_brushes < 1)
{
g_message ("Brush pipes should have at least one brush.");
close (fd);
g_free (name);
g_string_free (buffer, TRUE);
return -1;
}
image_ID = gimp_image_new (1, 1, GIMP_GRAY);
gimp_image_set_filename (image_ID, filename);
for (i = 0; i < num_of_brushes; i++)
{
if (! gih_load_one_brush (fd, image_ID))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
"%s",
_("Couldn't load one brush in the pipe, giving up."));
close (fd);
g_free (name);
g_string_free (buffer, TRUE);
return -1;
}
gimp_progress_update ((gdouble) i / (gdouble) num_of_brushes);
}
while (*paramstring && g_ascii_isspace (*paramstring))
paramstring++;
/* Since we do not (yet) load the pipe as described in the header,
but use one layer per brush, we have to alter the paramstring
before attaching it as a parasite.
*/
if (*paramstring)
{
gimp_pixpipe_params_parse (paramstring, &gihparams);
gihparams.cellwidth = gimp_image_width (image_ID);
gihparams.cellheight = gimp_image_height (image_ID);
gihparams.cols = 1;
gihparams.rows = 1;
paramstring = gimp_pixpipe_params_build (&gihparams);
if (paramstring)
{
pipe_parasite = gimp_parasite_new ("gimp-brush-pipe-parameters",
GIMP_PARASITE_PERSISTENT,
strlen (paramstring) + 1,
paramstring);
gimp_image_parasite_attach (image_ID, pipe_parasite);
gimp_parasite_free (pipe_parasite);
g_free (paramstring);
}
}
g_string_free (buffer, TRUE);
return image_ID;
}
/* save routines */
static void
size_adjustment_callback (GtkWidget *widget,
gpointer data)
{
gint i;
gint size;
gint newn;
gchar buf[10];
SizeAdjustmentData *adj = (SizeAdjustmentData *) data;
for (i = 0; i < adj->nguides; i++)
gimp_image_delete_guide (adj->image, adj->guides[i]);
g_free (adj->guides);
adj->guides = NULL;
gimp_displays_flush ();
*(adj->value) = gtk_adjustment_get_value (GTK_ADJUSTMENT (widget));
if (adj->orientation == GIMP_ORIENTATION_VERTICAL)
{
size = gimp_image_width (adj->image);
newn = size / *(adj->value);
adj->nguides = newn - 1;
adj->guides = g_new (gint32, adj->nguides);
for (i = 0; i < adj->nguides; i++)
adj->guides[i] = gimp_image_add_vguide (adj->image,
*(adj->value) * (i+1));
}
else
{
size = gimp_image_height (adj->image);
newn = size / *(adj->value);
adj->nguides = newn - 1;
adj->guides = g_new (gint32, adj->nguides);
for (i = 0; i < adj->nguides; i++)
adj->guides[i] = gimp_image_add_hguide (adj->image,
*(adj->value) * (i+1));
}
gimp_displays_flush ();
sprintf (buf, "%2d", newn);
gtk_label_set_text (GTK_LABEL (adj->count_label), buf);
*(adj->count) = newn;
if (newn * *(adj->value) != size)
gtk_widget_show (GTK_WIDGET (adj->warning_label));
else
gtk_widget_hide (GTK_WIDGET (adj->warning_label));
if (adj->ncells != NULL)
gtk_adjustment_set_value (GTK_ADJUSTMENT (adj->ncells),
*(adj->other_count) * *(adj->count));
if (adj->rank0 != NULL)
gtk_adjustment_set_value (GTK_ADJUSTMENT (adj->rank0),
*(adj->other_count) * *(adj->count));
}
static void
entry_callback (GtkWidget *widget,
gpointer data)
{
if (data == info.description)
{
strncpy (info.description,
gtk_entry_get_text (GTK_ENTRY (widget)), MAXDESCLEN);
info.description[MAXDESCLEN] = 0;
}
}
static void
cb_callback (GtkWidget *widget,
gpointer data)
{
gint index;
index = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
*((const gchar **) data) = selection_modes [index];
}
static void
dim_callback (GtkAdjustment *adjustment,
SizeAdjustmentData *data)
{
gint i;
gihparams.dim = RINT (gtk_adjustment_get_value (adjustment));
for (i = 0; i < GIMP_PIXPIPE_MAXDIM; i++)
{
gtk_widget_set_sensitive (data->rank_entry[i], i < gihparams.dim);
gtk_widget_set_sensitive (data->mode_entry[i], i < gihparams.dim);
}
}
static gboolean
gih_save_dialog (gint32 image_ID)
{
GtkWidget *dialog;
GtkWidget *table;
GtkWidget *dimtable;
GtkWidget *label;
GtkObject *adjustment;
GtkWidget *spinbutton;
GtkWidget *entry;
GtkWidget *box;
GtkWidget *cb;
gint i;
gchar buffer[100];
SizeAdjustmentData cellw_adjust;
SizeAdjustmentData cellh_adjust;
gint32 *layer_ID;
gint32 nlayers;
gboolean run;
dialog = gimp_export_dialog_new (_("Brush Pipe"), PLUG_IN_BINARY, SAVE_PROC);
/* The main table */
table = gtk_table_new (8, 2, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
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);
/*
* Spacing: __
*/
spinbutton = gimp_spin_button_new (&adjustment, info.spacing,
1, 1000, 1, 10, 0, 1, 0);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Spacing (percent):"), 0.0, 0.5,
spinbutton, 1, TRUE);
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&info.spacing);
/*
* Description: ___________
*/
entry = gtk_entry_new ();
gtk_widget_set_size_request (entry, 200, -1);
gtk_entry_set_text (GTK_ENTRY (entry), info.description);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Description:"), 0.0, 0.5,
entry, 1, FALSE);
g_signal_connect (entry, "changed",
G_CALLBACK (entry_callback),
info.description);
/*
* Cell size: __ x __ pixels
*/
box = gtk_hbox_new (FALSE, 4);
spinbutton = gimp_spin_button_new (&adjustment,
gihparams.cellwidth,
2, gimp_image_width (image_ID), 1, 10, 0,
1, 0);
gtk_box_pack_start (GTK_BOX (box), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
layer_ID = gimp_image_get_layers (image_ID, &nlayers);
cellw_adjust.orientation = GIMP_ORIENTATION_VERTICAL;
cellw_adjust.image = image_ID;
cellw_adjust.toplayer = layer_ID[nlayers-1];
cellw_adjust.nguides = 0;
cellw_adjust.guides = NULL;
cellw_adjust.value = &gihparams.cellwidth;
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (size_adjustment_callback),
&cellw_adjust);
label = gtk_label_new ("x");
gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);
gtk_widget_show (label);
spinbutton = gimp_spin_button_new (&adjustment,
gihparams.cellheight,
2, gimp_image_height (image_ID), 1, 10, 0,
1, 0);
gtk_box_pack_start (GTK_BOX (box), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
cellh_adjust.orientation = GIMP_ORIENTATION_HORIZONTAL;
cellh_adjust.image = image_ID;
cellh_adjust.toplayer = layer_ID[nlayers-1];
cellh_adjust.nguides = 0;
cellh_adjust.guides = NULL;
cellh_adjust.value = &gihparams.cellheight;
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (size_adjustment_callback),
&cellh_adjust);
label = gtk_label_new ( _("Pixels"));
gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);
gtk_widget_show (label);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 2,
_("Cell size:"), 0.0, 0.5,
box, 1, FALSE);
g_free (layer_ID);
/*
* Number of cells: ___
*/
spinbutton = gimp_spin_button_new (&adjustment,
gihparams.ncells, 1, 1000, 1, 10, 0,
1, 0);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 3,
_("Number of cells:"), 0.0, 0.5,
spinbutton, 1, TRUE);
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&gihparams.ncells);
if (gihparams.dim == 1)
cellw_adjust.ncells = cellh_adjust.ncells = adjustment;
else
cellw_adjust.ncells = cellh_adjust.ncells = NULL;
/*
* Display as: __ rows x __ cols
*/
box = gtk_hbox_new (FALSE, 0);
g_snprintf (buffer, sizeof (buffer), "%2d", gihparams.rows);
label = gtk_label_new (buffer);
gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);
cellh_adjust.count_label = label;
cellh_adjust.count = &gihparams.rows;
cellh_adjust.other_count = &gihparams.cols;
gtk_widget_show (label);
label = gtk_label_new (_(" Rows of "));
gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);
gtk_widget_show (label);
g_snprintf (buffer, sizeof (buffer), "%2d", gihparams.cols);
label = gtk_label_new (buffer);
gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);
cellw_adjust.count_label = label;
cellw_adjust.count = &gihparams.cols;
cellw_adjust.other_count = &gihparams.rows;
gtk_widget_show (label);
label = gtk_label_new (_(" Columns on each layer"));
gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);
gtk_widget_show (label);
label = gtk_label_new (_(" (Width Mismatch!) "));
gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);
cellw_adjust.warning_label = label;
label = gtk_label_new (_(" (Height Mismatch!) "));
gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);
cellh_adjust.warning_label = label;
gimp_table_attach_aligned (GTK_TABLE (table), 0, 4,
_("Display as:"), 0.0, 0.5,
box, 1, FALSE);
/*
* Dimension: ___
*/
spinbutton = gimp_spin_button_new (&adjustment, gihparams.dim,
1, GIMP_PIXPIPE_MAXDIM, 1, 1, 0, 1, 0);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 5,
_("Dimension:"), 0.0, 0.5,
spinbutton, 1, TRUE);
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (dim_callback),
&cellw_adjust);
/*
* Ranks / Selection: ______ ______ ______ ______ ______
*/
dimtable = gtk_table_new (2, GIMP_PIXPIPE_MAXDIM, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (dimtable), 4);
for (i = 0; i < GIMP_PIXPIPE_MAXDIM; i++)
{
gint j;
spinbutton = gimp_spin_button_new (&adjustment,
gihparams.rank[i], 1, 100, 1, 1, 0,
1, 0);
gtk_table_attach (GTK_TABLE (dimtable), spinbutton, 0, 1, i, i + 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (spinbutton);
if (i >= gihparams.dim)
gtk_widget_set_sensitive (spinbutton, FALSE);
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&gihparams.rank[i]);
cellw_adjust.rank_entry[i] = cellh_adjust.rank_entry[i] = spinbutton;
if (i == 0)
{
if (gihparams.dim == 1)
cellw_adjust.rank0 = cellh_adjust.rank0 = adjustment;
else
cellw_adjust.rank0 = cellh_adjust.rank0 = NULL;
}
cb = gtk_combo_box_new_text ();
for (j = 0; j < G_N_ELEMENTS (selection_modes); j++)
gtk_combo_box_append_text (GTK_COMBO_BOX (cb), selection_modes[j]);
gtk_combo_box_set_active (GTK_COMBO_BOX (cb), 2); /* random */
if (gihparams.selection[i])
for (j = 0; j < G_N_ELEMENTS (selection_modes); j++)
if (!strcmp (gihparams.selection[i], selection_modes[j]))
{
gtk_combo_box_set_active (GTK_COMBO_BOX (cb), j);
break;
}
gtk_table_attach (GTK_TABLE (dimtable), cb, 1, 2, i, i + 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (cb);
if (i >= gihparams.dim)
gtk_widget_set_sensitive (cb, FALSE);
g_signal_connect (GTK_COMBO_BOX (cb), "changed",
G_CALLBACK (cb_callback),
&gihparams.selection[i]);
cellw_adjust.mode_entry[i] = cellh_adjust.mode_entry[i] = cb;
}
gimp_table_attach_aligned (GTK_TABLE (table), 0, 6,
_("Ranks:"), 0.0, 0.0,
dimtable, 1, FALSE);
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
if (run)
{
gint i;
for (i = 0; i < GIMP_PIXPIPE_MAXDIM; i++)
gihparams.selection[i] = g_strdup (gihparams.selection[i]);
/* Fix up bogus values */
gihparams.ncells = MIN (gihparams.ncells,
num_layers * gihparams.rows * gihparams.cols);
}
gtk_widget_destroy (dialog);
for (i = 0; i < cellw_adjust.nguides; i++)
gimp_image_delete_guide (image_ID, cellw_adjust.guides[i]);
for (i = 0; i < cellh_adjust.nguides; i++)
gimp_image_delete_guide (image_ID, cellh_adjust.guides[i]);
return run;
}
static gboolean
gih_save_one_brush (gint fd,
GimpPixelRgn *pixel_rgn,
const gchar *name)
{
BrushHeader header;
guchar *buffer;
guint y;
g_return_val_if_fail (fd != -1, FALSE);
g_return_val_if_fail (pixel_rgn != NULL, FALSE);
if (pixel_rgn->w < 1 || pixel_rgn->h < 1)
return FALSE;
if (! name)
name = _("Unnamed");
header.header_size = g_htonl (sizeof (header) + strlen (name) + 1);
header.version = g_htonl (2);
header.width = g_htonl (pixel_rgn->w);
header.height = g_htonl (pixel_rgn->h);
header.bytes = g_htonl (pixel_rgn->bpp > 2 ? 4 : 1);
header.magic_number = g_htonl (GBRUSH_MAGIC);
header.spacing = g_htonl (info.spacing);
if (write (fd, &header, sizeof (header)) != sizeof (header))
return FALSE;
if (write (fd, name, strlen (name) + 1) != strlen (name) + 1)
return FALSE;
buffer = g_malloc (pixel_rgn->w * pixel_rgn->bpp);
for (y = 0; y < pixel_rgn->h; y++)
{
guint x;
gimp_pixel_rgn_get_row (pixel_rgn, buffer,
0 + pixel_rgn->x, y + pixel_rgn->y, pixel_rgn->w);
switch (pixel_rgn->bpp)
{
case 1: /* GRAY */
for (x = 0; x < pixel_rgn->w; x++)
{
const guchar value = 255 - buffer[x];
if (write (fd, &value, 1) != 1)
{
g_free (buffer);
return FALSE;
}
}
break;
case 2: /* GRAYA, alpha channel is ignored */
for (x = 0; x < pixel_rgn->w; x++)
{
const guchar value = 255 - buffer[2 * x];
if (write (fd, &value, 1) != 1)
{
g_free (buffer);
return FALSE;
}
}
break;
case 3: /* RGB, alpha channel is added */
for (x = 0; x < pixel_rgn->w; x++)
{
guchar value[4];
value[0] = buffer[3 * x + 0];
value[1] = buffer[3 * x + 1];
value[2] = buffer[3 * x + 2];
value[3] = 255;
if (write (fd, value, 4) != 4)
{
g_free (buffer);
return FALSE;
}
}
break;
case 4: /* RGBA */
if (write (fd, buffer, pixel_rgn->w * pixel_rgn->bpp) !=
pixel_rgn->w * pixel_rgn->bpp)
{
g_free (buffer);
return FALSE;
}
break;
default:
g_assert_not_reached ();
break;
}
}
g_free (buffer);
return TRUE;
}
static gboolean
gih_save_image (const gchar *filename,
gint32 image_ID,
gint32 orig_image_ID,
gint32 drawable_ID,
GError **error)
{
GimpParasite *pipe_parasite;
gchar *header;
gchar *parstring;
gint32 *layer_ID;
gint fd;
gint nlayers, layer;
gint row, col;
gint imagew, imageh;
gint offsetx, offsety;
gint k;
if (gihparams.ncells < 1)
return FALSE;
imagew = gimp_image_width (image_ID);
imageh = gimp_image_height (image_ID);
gimp_tile_cache_size (gimp_tile_height () * imagew * 4);
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));
parstring = gimp_pixpipe_params_build (&gihparams);
header = g_strdup_printf ("%s\n%d %s\n",
info.description, gihparams.ncells, parstring);
if (write (fd, header, strlen (header)) != strlen (header))
{
g_free (parstring);
g_free (header);
close (fd);
return FALSE;
}
g_free (header);
pipe_parasite = gimp_parasite_new ("gimp-brush-pipe-parameters",
GIMP_PARASITE_PERSISTENT,
strlen (parstring) + 1, parstring);
gimp_image_parasite_attach (orig_image_ID, pipe_parasite);
gimp_parasite_free (pipe_parasite);
g_free (parstring);
layer_ID = gimp_image_get_layers (image_ID, &nlayers);
for (layer = 0, k = 0; layer < nlayers; layer++)
{
GimpDrawable *drawable = gimp_drawable_get (layer_ID[layer]);
gchar *name = gimp_drawable_get_name (drawable->drawable_id);
gimp_drawable_offsets (drawable->drawable_id, &offsetx, &offsety);
for (row = 0; row < gihparams.rows; row++)
{
gint y, ynext;
gint thisy, thish;
y = (row * imageh) / gihparams.rows;
ynext = ((row + 1) * imageh / gihparams.rows);
/* Assume layer is offset to positive direction in x and y.
* That's reasonable, as otherwise all of the layer
* won't be visible.
* thisy and thisx are in the drawable's coordinate space.
*/
thisy = MAX (0, y - offsety);
thish = (ynext - offsety) - thisy;
thish = MIN (thish, drawable->height - thisy);
for (col = 0; col < gihparams.cols; col++)
{
GimpPixelRgn pixel_rgn;
gint x, xnext;
gint thisx, thisw;
x = (col * imagew / gihparams.cols);
xnext = ((col + 1) * imagew / gihparams.cols);
thisx = MAX (0, x - offsetx);
thisw = (xnext - offsetx) - thisx;
thisw = MIN (thisw, drawable->width - thisx);
gimp_pixel_rgn_init (&pixel_rgn, drawable, thisx, thisy,
thisw, thish, FALSE, FALSE);
if (! gih_save_one_brush (fd, &pixel_rgn, name))
{
close (fd);
return FALSE;
}
k++;
gimp_progress_update ((gdouble) k / gihparams.ncells);
}
}
g_free (name);
gimp_drawable_detach (drawable);
}
gimp_progress_update (1.0);
g_free (layer_ID);
close (fd);
return TRUE;
}
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