mirror of https://github.com/GNOME/gimp.git
434 lines
12 KiB
C
434 lines
12 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <sys/types.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <fcntl.h>
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#include <glib-object.h>
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#include <glib/gstdio.h>
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#ifdef G_OS_WIN32
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#include <io.h>
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#endif
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#ifndef _O_BINARY
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#define _O_BINARY 0
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#endif
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#include "libgimpbase/gimpbase.h"
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#include "core-types.h"
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#include "base/temp-buf.h"
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#include "gimpimage.h"
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#include "gimppattern.h"
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#include "gimppattern-header.h"
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#include "gimp-intl.h"
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static void gimp_pattern_finalize (GObject *object);
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static gint64 gimp_pattern_get_memsize (GimpObject *object,
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gint64 *gui_size);
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static gboolean gimp_pattern_get_size (GimpViewable *viewable,
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gint *width,
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gint *height);
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static TempBuf * gimp_pattern_get_new_preview (GimpViewable *viewable,
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gint width,
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gint height);
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static gchar * gimp_pattern_get_description (GimpViewable *viewable,
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gchar **tooltip);
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static gchar * gimp_pattern_get_extension (GimpData *data);
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static GimpData * gimp_pattern_duplicate (GimpData *data);
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G_DEFINE_TYPE (GimpPattern, gimp_pattern, GIMP_TYPE_DATA)
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#define parent_class gimp_pattern_parent_class
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static void
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gimp_pattern_class_init (GimpPatternClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
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GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
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GimpDataClass *data_class = GIMP_DATA_CLASS (klass);
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object_class->finalize = gimp_pattern_finalize;
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gimp_object_class->get_memsize = gimp_pattern_get_memsize;
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viewable_class->default_stock_id = "gimp-tool-bucket-fill";
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viewable_class->get_size = gimp_pattern_get_size;
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viewable_class->get_new_preview = gimp_pattern_get_new_preview;
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viewable_class->get_description = gimp_pattern_get_description;
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data_class->get_extension = gimp_pattern_get_extension;
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data_class->duplicate = gimp_pattern_duplicate;
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}
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static void
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gimp_pattern_init (GimpPattern *pattern)
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{
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pattern->mask = NULL;
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}
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static void
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gimp_pattern_finalize (GObject *object)
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{
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GimpPattern *pattern = GIMP_PATTERN (object);
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if (pattern->mask)
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{
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temp_buf_free (pattern->mask);
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pattern->mask = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gint64
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gimp_pattern_get_memsize (GimpObject *object,
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gint64 *gui_size)
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{
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GimpPattern *pattern = GIMP_PATTERN (object);
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gint64 memsize = 0;
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if (pattern->mask)
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memsize += temp_buf_get_memsize (pattern->mask);
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return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
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gui_size);
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}
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static gboolean
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gimp_pattern_get_size (GimpViewable *viewable,
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gint *width,
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gint *height)
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{
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GimpPattern *pattern = GIMP_PATTERN (viewable);
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*width = pattern->mask->width;
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*height = pattern->mask->height;
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return TRUE;
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}
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static TempBuf *
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gimp_pattern_get_new_preview (GimpViewable *viewable,
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gint width,
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gint height)
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{
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GimpPattern *pattern = GIMP_PATTERN (viewable);
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TempBuf *temp_buf;
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gint copy_width;
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gint copy_height;
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copy_width = MIN (width, pattern->mask->width);
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copy_height = MIN (height, pattern->mask->height);
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temp_buf = temp_buf_new (copy_width, copy_height,
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pattern->mask->bytes,
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0, 0, NULL);
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temp_buf_copy_area (pattern->mask, temp_buf,
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0, 0, copy_width, copy_height, 0, 0);
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return temp_buf;
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}
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static gchar *
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gimp_pattern_get_description (GimpViewable *viewable,
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gchar **tooltip)
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{
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GimpPattern *pattern = GIMP_PATTERN (viewable);
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return g_strdup_printf ("%s (%d × %d)",
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GIMP_OBJECT (pattern)->name,
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pattern->mask->width,
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pattern->mask->height);
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}
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static gchar *
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gimp_pattern_get_extension (GimpData *data)
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{
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return GIMP_PATTERN_FILE_EXTENSION;
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}
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static GimpData *
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gimp_pattern_duplicate (GimpData *data)
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{
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GimpPattern *pattern = g_object_new (GIMP_TYPE_PATTERN, NULL);
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pattern->mask = temp_buf_copy (GIMP_PATTERN (data)->mask, NULL);
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return GIMP_DATA (pattern);
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}
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GimpData *
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gimp_pattern_new (const gchar *name)
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{
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GimpPattern *pattern;
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guchar *data;
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gint row, col;
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g_return_val_if_fail (name != NULL, NULL);
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pattern = g_object_new (GIMP_TYPE_PATTERN,
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"name", name,
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NULL);
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pattern->mask = temp_buf_new (32, 32, 3, 0, 0, NULL);
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data = temp_buf_data (pattern->mask);
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for (row = 0; row < pattern->mask->height; row++)
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for (col = 0; col < pattern->mask->width; col++)
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{
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memset (data, (col % 2) && (row % 2) ? 255 : 0, 3);
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data += 3;
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}
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return GIMP_DATA (pattern);
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}
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GimpData *
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gimp_pattern_get_standard (void)
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{
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static GimpData *standard_pattern = NULL;
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if (! standard_pattern)
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{
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standard_pattern = gimp_pattern_new ("Standard");
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standard_pattern->dirty = FALSE;
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gimp_data_make_internal (standard_pattern);
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/* set ref_count to 2 --> never swap the standard pattern */
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g_object_ref (standard_pattern);
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}
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return standard_pattern;
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}
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GList *
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gimp_pattern_load (const gchar *filename,
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GError **error)
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{
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GimpPattern *pattern = NULL;
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gint fd;
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PatternHeader header;
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gint bn_size;
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gchar *name = NULL;
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g_return_val_if_fail (filename != NULL, NULL);
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g_return_val_if_fail (g_path_is_absolute (filename), NULL);
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g_return_val_if_fail (error == NULL || *error == NULL, NULL);
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fd = g_open (filename, O_RDONLY | _O_BINARY, 0);
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if (fd == -1)
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{
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g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_OPEN,
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_("Could not open '%s' for reading: %s"),
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gimp_filename_to_utf8 (filename), g_strerror (errno));
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return NULL;
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}
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/* Read in the header size */
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if (read (fd, &header, sizeof (header)) != sizeof (header))
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{
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g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
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_("Fatal parse error in pattern file '%s': "
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"File appears truncated."),
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gimp_filename_to_utf8 (filename));
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goto error;
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}
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/* rearrange the bytes in each unsigned int */
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header.header_size = g_ntohl (header.header_size);
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header.version = g_ntohl (header.version);
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header.width = g_ntohl (header.width);
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header.height = g_ntohl (header.height);
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header.bytes = g_ntohl (header.bytes);
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header.magic_number = g_ntohl (header.magic_number);
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/* Check for correct file format */
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if (header.magic_number != GPATTERN_MAGIC || header.version != 1 ||
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header.header_size <= sizeof (header))
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{
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g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
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_("Fatal parse error in pattern file '%s': "
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"Unknown pattern format version %d."),
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gimp_filename_to_utf8 (filename), header.version);
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goto error;
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}
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/* Check for supported bit depths */
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if (header.bytes < 1 || header.bytes > 4)
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{
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g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
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_("Fatal parse error in pattern file '%s: "
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"Unsupported pattern depth %d.\n"
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"GIMP Patterns must be GRAY or RGB."),
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gimp_filename_to_utf8 (filename), header.bytes);
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goto error;
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}
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/* Read in the pattern name */
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if ((bn_size = (header.header_size - sizeof (header))))
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{
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gchar *utf8;
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name = g_new (gchar, bn_size);
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if ((read (fd, name, bn_size)) < bn_size)
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{
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g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
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_("Fatal parse error in pattern file '%s': "
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"File appears truncated."),
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gimp_filename_to_utf8 (filename));
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g_free (name);
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goto error;
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}
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utf8 = gimp_any_to_utf8 (name, -1,
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_("Invalid UTF-8 string in pattern file '%s'."),
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gimp_filename_to_utf8 (filename));
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g_free (name);
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name = utf8;
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}
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if (! name)
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name = g_strdup (_("Unnamed"));
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pattern = g_object_new (GIMP_TYPE_PATTERN,
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"name", name,
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"mime-type", "image/x-gimp-pat",
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NULL);
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g_free (name);
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pattern->mask = temp_buf_new (header.width, header.height, header.bytes,
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0, 0, NULL);
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if (read (fd, temp_buf_data (pattern->mask),
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header.width * header.height * header.bytes) <
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header.width * header.height * header.bytes)
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{
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g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
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_("Fatal parse error in pattern file '%s': "
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"File appears truncated."),
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gimp_filename_to_utf8 (filename));
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goto error;
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}
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close (fd);
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return g_list_prepend (NULL, pattern);
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error:
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if (pattern)
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g_object_unref (pattern);
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close (fd);
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return NULL;
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}
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GList *
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gimp_pattern_load_pixbuf (const gchar *filename,
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GError **error)
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{
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GimpPattern *pattern;
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GdkPixbuf *pixbuf;
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guchar *pat_data;
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guchar *buf_data;
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gchar *name;
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gint width;
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gint height;
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gint bytes;
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gint rowstride;
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gint i;
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g_return_val_if_fail (filename != NULL, NULL);
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g_return_val_if_fail (g_path_is_absolute (filename), NULL);
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g_return_val_if_fail (error == NULL || *error == NULL, NULL);
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pixbuf = gdk_pixbuf_new_from_file (filename, error);
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if (! pixbuf)
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return NULL;
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name = g_strdup (gdk_pixbuf_get_option (pixbuf, "tEXt::Title"));
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if (! name)
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name = g_strdup (gdk_pixbuf_get_option (pixbuf, "tEXt::Comment"));
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if (! name)
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name = g_filename_display_basename (filename);
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pattern = g_object_new (GIMP_TYPE_PATTERN,
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"name", name,
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"mime-type", NULL, /* FIXME!! */
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NULL);
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g_free (name);
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width = gdk_pixbuf_get_width (pixbuf);
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height = gdk_pixbuf_get_height (pixbuf);
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bytes = gdk_pixbuf_get_n_channels (pixbuf);
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rowstride = gdk_pixbuf_get_rowstride (pixbuf);
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pattern->mask = temp_buf_new (width, height, bytes, 0, 0, NULL);
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pat_data = gdk_pixbuf_get_pixels (pixbuf);
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buf_data = temp_buf_data (pattern->mask);
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for (i = 0; i < height; i++)
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{
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memcpy (buf_data + i * width * bytes, pat_data, width * bytes);
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pat_data += rowstride;
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}
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g_object_unref (pixbuf);
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return g_list_prepend (NULL, pattern);
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}
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TempBuf *
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gimp_pattern_get_mask (const GimpPattern *pattern)
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{
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g_return_val_if_fail (GIMP_IS_PATTERN (pattern), NULL);
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return pattern->mask;
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}
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