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-rw-r--r--app/core/gimpbrushgenerated-load.c284
1 files changed, 284 insertions, 0 deletions
diff --git a/app/core/gimpbrushgenerated-load.c b/app/core/gimpbrushgenerated-load.c
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+++ b/app/core/gimpbrushgenerated-load.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimp_brush_generated module Copyright 1998 Jay Cox <jaycox@earthlink.net>
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpbase/gimpbase.h"
+
+#include "core-types.h"
+
+#include "gimp-utils.h"
+#include "gimpbrushgenerated.h"
+#include "gimpbrushgenerated-load.h"
+
+#include "gimp-intl.h"
+
+
+GList *
+gimp_brush_generated_load (GimpContext *context,
+ GFile *file,
+ GInputStream *input,
+ GError **error)
+{
+ GimpBrush *brush;
+ GDataInputStream *data_input;
+ gchar *string;
+ gsize string_len;
+ gint linenum;
+ gchar *name = NULL;
+ GimpBrushGeneratedShape shape = GIMP_BRUSH_GENERATED_CIRCLE;
+ gboolean have_shape = FALSE;
+ gint spikes = 2;
+ gdouble spacing;
+ gdouble radius;
+ gdouble hardness;
+ gdouble aspect_ratio;
+ gdouble angle;
+
+ g_return_val_if_fail (G_IS_FILE (file), NULL);
+ g_return_val_if_fail (G_IS_INPUT_STREAM (input), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ data_input = g_data_input_stream_new (input);
+
+ /* make sure the file we are reading is the right type */
+ linenum = 1;
+ string_len = 256;
+ string = gimp_data_input_stream_read_line_always (data_input, &string_len,
+ NULL, error);
+ if (! string)
+ goto failed;
+
+ if (! g_str_has_prefix (string, "GIMP-VBR"))
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Not a GIMP brush file."));
+ g_free (string);
+ goto failed;
+ }
+
+ g_free (string);
+
+ /* make sure we are reading a compatible version */
+ linenum++;
+ string_len = 256;
+ string = gimp_data_input_stream_read_line_always (data_input, &string_len,
+ NULL, error);
+ if (! string)
+ goto failed;
+
+ if (! g_str_has_prefix (string, "1.0"))
+ {
+ if (! g_str_has_prefix (string, "1.5"))
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Unknown GIMP brush version."));
+ g_free (string);
+ goto failed;
+ }
+ else
+ {
+ have_shape = TRUE;
+ }
+ }
+
+ g_free (string);
+
+ /* read name */
+ linenum++;
+ string_len = 256;
+ string = gimp_data_input_stream_read_line_always (data_input, &string_len,
+ NULL, error);
+ if (! string)
+ goto failed;
+
+ g_strstrip (string);
+
+ /* the empty string is not an allowed name */
+ if (strlen (string) < 1)
+ {
+ name = g_strdup (_("Untitled"));
+ }
+ else
+ {
+ name = gimp_any_to_utf8 (string, -1,
+ _("Invalid UTF-8 string in brush file '%s'."),
+ gimp_file_get_utf8_name (file));
+ }
+
+ g_free (string);
+
+ if (have_shape)
+ {
+ GEnumClass *enum_class;
+ GEnumValue *shape_val;
+
+ enum_class = g_type_class_peek (GIMP_TYPE_BRUSH_GENERATED_SHAPE);
+
+ /* read shape */
+ linenum++;
+ string_len = 256;
+ string = gimp_data_input_stream_read_line_always (data_input, &string_len,
+ NULL, error);
+ if (! string)
+ goto failed;
+
+ g_strstrip (string);
+ shape_val = g_enum_get_value_by_nick (enum_class, string);
+
+ if (! shape_val)
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Unknown GIMP brush shape."));
+ g_free (string);
+ goto failed;
+ }
+
+ g_free (string);
+
+ shape = shape_val->value;
+ }
+
+ /* read brush spacing */
+ linenum++;
+ string_len = 256;
+ string = gimp_data_input_stream_read_line_always (data_input, &string_len,
+ NULL, error);
+ if (! string)
+ goto failed;
+ if (! gimp_ascii_strtod (string, NULL, &spacing))
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Invalid brush spacing."));
+ g_free (string);
+ goto failed;
+ }
+ g_free (string);
+
+
+ /* read brush radius */
+ linenum++;
+ string_len = 256;
+ string = gimp_data_input_stream_read_line_always (data_input, &string_len,
+ NULL, error);
+ if (! string)
+ goto failed;
+ if (! gimp_ascii_strtod (string, NULL, &radius))
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Invalid brush radius."));
+ g_free (string);
+ goto failed;
+ }
+ g_free (string);
+
+ if (have_shape)
+ {
+ /* read number of spikes */
+ linenum++;
+ string_len = 256;
+ string = gimp_data_input_stream_read_line_always (data_input, &string_len,
+ NULL, error);
+ if (! string)
+ goto failed;
+ if (! gimp_ascii_strtoi (string, NULL, 10, &spikes) ||
+ spikes < 2 || spikes > 20)
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Invalid brush spike count."));
+ g_free (string);
+ goto failed;
+ }
+ g_free (string);
+ }
+
+ /* read brush hardness */
+ linenum++;
+ string_len = 256;
+ string = gimp_data_input_stream_read_line_always (data_input, &string_len,
+ NULL, error);
+ if (! string)
+ goto failed;
+ if (! gimp_ascii_strtod (string, NULL, &hardness))
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Invalid brush hardness."));
+ g_free (string);
+ goto failed;
+ }
+ g_free (string);
+
+ /* read brush aspect_ratio */
+ linenum++;
+ string_len = 256;
+ string = gimp_data_input_stream_read_line_always (data_input, &string_len,
+ NULL, error);
+ if (! string)
+ goto failed;
+ if (! gimp_ascii_strtod (string, NULL, &aspect_ratio))
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Invalid brush aspect ratio."));
+ g_free (string);
+ goto failed;
+ }
+ g_free (string);
+
+ /* read brush angle */
+ linenum++;
+ string_len = 256;
+ string = gimp_data_input_stream_read_line_always (data_input, &string_len,
+ NULL, error);
+ if (! string)
+ goto failed;
+ if (! gimp_ascii_strtod (string, NULL, &angle))
+ {
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
+ _("Invalid brush angle."));
+ g_free (string);
+ goto failed;
+ }
+ g_free (string);
+
+ g_object_unref (data_input);
+
+ brush = GIMP_BRUSH (gimp_brush_generated_new (name, shape, radius, spikes,
+ hardness, aspect_ratio, angle));
+ g_free (name);
+
+ gimp_brush_set_spacing (brush, spacing);
+
+ return g_list_prepend (NULL, brush);
+
+ failed:
+
+ g_object_unref (data_input);
+
+ if (name)
+ g_free (name);
+
+ g_prefix_error (error, _("In line %d of brush file: "), linenum);
+
+ return NULL;
+}
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