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gimp/app/core/gimppattern-load.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.
*/
#include "config.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <fcntl.h>
#include <glib-object.h>
#include <glib/gstdio.h>
#ifdef G_OS_WIN32
#include <io.h>
#endif
#ifndef _O_BINARY
#define _O_BINARY 0
#endif
#include "libgimpbase/gimpbase.h"
#include "core-types.h"
#include "config/gimpbaseconfig.h"
#include "base/temp-buf.h"
#include "gimpimage.h"
#include "gimppattern.h"
#include "gimppattern-header.h"
#include "gimp-intl.h"
static void gimp_pattern_class_init (GimpPatternClass *klass);
static void gimp_pattern_init (GimpPattern *pattern);
static void gimp_pattern_finalize (GObject *object);
static gint64 gimp_pattern_get_memsize (GimpObject *object,
gint64 *gui_size);
static gboolean gimp_pattern_get_size (GimpViewable *viewable,
gint *width,
gint *height);
static TempBuf * gimp_pattern_get_new_preview (GimpViewable *viewable,
gint width,
gint height);
static gchar * gimp_pattern_get_description (GimpViewable *viewable,
gchar **tooltip);
static gchar * gimp_pattern_get_extension (GimpData *data);
static GimpData * gimp_pattern_duplicate (GimpData *data,
gboolean stingy_memory_use);
static GimpDataClass *parent_class = NULL;
GType
gimp_pattern_get_type (void)
{
static GType pattern_type = 0;
if (! pattern_type)
{
static const GTypeInfo pattern_info =
{
sizeof (GimpPatternClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_pattern_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpPattern),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_pattern_init,
};
pattern_type = g_type_register_static (GIMP_TYPE_DATA,
"GimpPattern",
&pattern_info, 0);
}
return pattern_type;
}
static void
gimp_pattern_class_init (GimpPatternClass *klass)
{
GObjectClass *object_class;
GimpObjectClass *gimp_object_class;
GimpViewableClass *viewable_class;
GimpDataClass *data_class;
object_class = G_OBJECT_CLASS (klass);
gimp_object_class = GIMP_OBJECT_CLASS (klass);
viewable_class = GIMP_VIEWABLE_CLASS (klass);
data_class = GIMP_DATA_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gimp_pattern_finalize;
gimp_object_class->get_memsize = gimp_pattern_get_memsize;
viewable_class->default_stock_id = "gimp-tool-bucket-fill";
viewable_class->get_size = gimp_pattern_get_size;
viewable_class->get_new_preview = gimp_pattern_get_new_preview;
viewable_class->get_description = gimp_pattern_get_description;
data_class->get_extension = gimp_pattern_get_extension;
data_class->duplicate = gimp_pattern_duplicate;
}
static void
gimp_pattern_init (GimpPattern *pattern)
{
pattern->mask = NULL;
}
static void
gimp_pattern_finalize (GObject *object)
{
GimpPattern *pattern = GIMP_PATTERN (object);
if (pattern->mask)
{
temp_buf_free (pattern->mask);
pattern->mask = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gint64
gimp_pattern_get_memsize (GimpObject *object,
gint64 *gui_size)
{
GimpPattern *pattern = GIMP_PATTERN (object);
gint64 memsize = 0;
if (pattern->mask)
memsize += temp_buf_get_memsize (pattern->mask);
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static gboolean
gimp_pattern_get_size (GimpViewable *viewable,
gint *width,
gint *height)
{
GimpPattern *pattern = GIMP_PATTERN (viewable);
*width = pattern->mask->width;
*height = pattern->mask->height;
return TRUE;
}
static TempBuf *
gimp_pattern_get_new_preview (GimpViewable *viewable,
gint width,
gint height)
{
GimpPattern *pattern = GIMP_PATTERN (viewable);
TempBuf *temp_buf;
gint copy_width;
gint copy_height;
copy_width = MIN (width, pattern->mask->width);
copy_height = MIN (height, pattern->mask->height);
temp_buf = temp_buf_new (copy_width, copy_height,
pattern->mask->bytes,
0, 0, NULL);
temp_buf_copy_area (pattern->mask, temp_buf,
0, 0, copy_width, copy_height, 0, 0);
return temp_buf;
}
static gchar *
gimp_pattern_get_description (GimpViewable *viewable,
gchar **tooltip)
{
GimpPattern *pattern = GIMP_PATTERN (viewable);
if (tooltip)
*tooltip = NULL;
return g_strdup_printf ("%s (%d x %d)",
GIMP_OBJECT (pattern)->name,
pattern->mask->width,
pattern->mask->height);
}
static gchar *
gimp_pattern_get_extension (GimpData *data)
{
return GIMP_PATTERN_FILE_EXTENSION;
}
static GimpData *
gimp_pattern_duplicate (GimpData *data,
gboolean stingy_memory_use)
{
GimpPattern *pattern;
pattern = g_object_new (GIMP_TYPE_PATTERN, NULL);
pattern->mask = temp_buf_copy (GIMP_PATTERN (data)->mask, NULL);
/* Swap the pattern to disk (if we're being stingy with memory) */
if (stingy_memory_use)
temp_buf_swap (pattern->mask);
return GIMP_DATA (pattern);
}
GimpData *
gimp_pattern_new (const gchar *name,
gboolean stingy_memory_use)
{
GimpPattern *pattern;
guchar *data;
gint row, col;
g_return_val_if_fail (name != NULL, NULL);
pattern = g_object_new (GIMP_TYPE_PATTERN,
"name", name,
NULL);
pattern->mask = temp_buf_new (32, 32, 3, 0, 0, NULL);
data = temp_buf_data (pattern->mask);
for (row = 0; row < pattern->mask->height; row++)
for (col = 0; col < pattern->mask->width; col++)
{
memset (data, (col % 2) && (row % 2) ? 255 : 0, 3);
data += 3;
}
/* Swap the pattern to disk (if we're being stingy with memory) */
if (stingy_memory_use)
temp_buf_swap (pattern->mask);
return GIMP_DATA (pattern);
}
GimpData *
gimp_pattern_get_standard (void)
{
static GimpData *standard_pattern = NULL;
if (! standard_pattern)
{
standard_pattern = gimp_pattern_new ("Standard", FALSE);
standard_pattern->dirty = FALSE;
gimp_data_make_internal (standard_pattern);
/* set ref_count to 2 --> never swap the standard pattern */
g_object_ref (standard_pattern);
}
return standard_pattern;
}
GList *
gimp_pattern_load (const gchar *filename,
gboolean stingy_memory_use,
GError **error)
{
GimpPattern *pattern = NULL;
gint fd;
PatternHeader header;
gint bn_size;
gchar *name = NULL;
g_return_val_if_fail (filename != NULL, NULL);
g_return_val_if_fail (g_path_is_absolute (filename), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
fd = g_open (filename, O_RDONLY | _O_BINARY, 0);
if (fd == -1)
{
g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_OPEN,
_("Could not open '%s' for reading: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return NULL;
}
/* Read in the header size */
if (read (fd, &header, sizeof (header)) != sizeof (header))
{
g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
_("Fatal parse error in pattern file '%s': "
"Could not read %d bytes: %s"),
gimp_filename_to_utf8 (filename),
(gint) sizeof (header), g_strerror (errno));
goto error;
}
/* rearrange the bytes in each unsigned int */
header.header_size = g_ntohl (header.header_size);
header.version = g_ntohl (header.version);
header.width = g_ntohl (header.width);
header.height = g_ntohl (header.height);
header.bytes = g_ntohl (header.bytes);
header.magic_number = g_ntohl (header.magic_number);
/* Check for correct file format */
if (header.magic_number != GPATTERN_MAGIC || header.version != 1 ||
header.header_size <= sizeof (header))
{
g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
_("Fatal parse error in pattern file '%s': "
"Unknown pattern format version %d."),
gimp_filename_to_utf8 (filename), header.version);
goto error;
}
/* Check for supported bit depths */
if (header.bytes < 1 || header.bytes > 4)
{
g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
_("Fatal parse error in pattern file '%s: "
"Unsupported pattern depth %d.\n"
"GIMP Patterns must be GRAY or RGB."),
gimp_filename_to_utf8 (filename), header.bytes);
goto error;
}
/* Read in the pattern name */
if ((bn_size = (header.header_size - sizeof (header))))
{
gchar *utf8;
name = g_new (gchar, bn_size);
if ((read (fd, name, bn_size)) < bn_size)
{
g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
_("Fatal parse error in pattern file '%s': "
"Could not read %d bytes: %s"),
gimp_filename_to_utf8 (filename), bn_size,
g_strerror (errno));
g_free (name);
goto error;
}
utf8 = gimp_any_to_utf8 (name, -1,
_("Invalid UTF-8 string in pattern file '%s'."),
gimp_filename_to_utf8 (filename));
g_free (name);
name = utf8;
}
if (! name)
name = g_strdup (_("Unnamed"));
pattern = g_object_new (GIMP_TYPE_PATTERN,
"name", name,
NULL);
g_free (name);
pattern->mask = temp_buf_new (header.width, header.height, header.bytes,
0, 0, NULL);
if (read (fd, temp_buf_data (pattern->mask),
header.width * header.height * header.bytes) <
header.width * header.height * header.bytes)
{
g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
_("Fatal parse error in pattern file '%s': "
"Could not read %d bytes: %s"),
gimp_filename_to_utf8 (filename),
header.width * header.height * header.bytes,
g_strerror (errno));
goto error;
}
close (fd);
/* Swap the pattern to disk (if we're being stingy with memory) */
if (stingy_memory_use)
temp_buf_swap (pattern->mask);
return g_list_prepend (NULL, pattern);
error:
if (pattern)
g_object_unref (pattern);
close (fd);
return NULL;
}
GList *
gimp_pattern_load_pixbuf (const gchar *filename,
gboolean stingy_memory_use,
GError **error)
{
GimpPattern *pattern;
GdkPixbuf *pixbuf;
guchar *pat_data;
guchar *buf_data;
gchar *name;
gint width;
gint height;
gint bytes;
gint rowstride;
gint i;
g_return_val_if_fail (filename != NULL, NULL);
g_return_val_if_fail (g_path_is_absolute (filename), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
pixbuf = gdk_pixbuf_new_from_file (filename, error);
if (! pixbuf)
return NULL;
name = g_strdup (gdk_pixbuf_get_option (pixbuf, "tEXt::Title"));
if (! name)
name = g_strdup (gdk_pixbuf_get_option (pixbuf, "tEXt::Comment"));
if (! name)
name = g_filename_display_basename (filename);
pattern = g_object_new (GIMP_TYPE_PATTERN,
"name", name,
NULL);
g_free (name);
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
bytes = gdk_pixbuf_get_n_channels (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
pattern->mask = temp_buf_new (width, height, bytes, 0, 0, NULL);
pat_data = gdk_pixbuf_get_pixels (pixbuf);
buf_data = temp_buf_data (pattern->mask);
for (i = 0; i < height; i++)
{
memcpy (buf_data + i * width * bytes, pat_data, width * bytes);
pat_data += rowstride;
}
g_object_unref (pixbuf);
/* Swap the pattern to disk (if we're being stingy with memory) */
if (stingy_memory_use)
temp_buf_swap (pattern->mask);
return g_list_prepend (NULL, pattern);
}
TempBuf *
gimp_pattern_get_mask (const GimpPattern *pattern)
{
g_return_val_if_fail (GIMP_IS_PATTERN (pattern), NULL);
return pattern->mask;
}
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