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-rw-r--r--app/core/gimpgradient-save.c221
1 files changed, 221 insertions, 0 deletions
diff --git a/app/core/gimpgradient-save.c b/app/core/gimpgradient-save.c
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+++ b/app/core/gimpgradient-save.c
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+/* GIMP - The GNU 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 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 <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpbase/gimpbase.h"
+
+#include "core-types.h"
+
+#include "gimpgradient.h"
+#include "gimpgradient-save.h"
+
+#include "gimp-intl.h"
+
+
+gboolean
+gimp_gradient_save (GimpData *data,
+ GOutputStream *output,
+ GError **error)
+{
+ GimpGradient *gradient = GIMP_GRADIENT (data);
+ GString *string;
+ GimpGradientSegment *seg;
+ gint num_segments;
+
+ /* File format is:
+ *
+ * GIMP Gradient
+ * Name: name
+ * number_of_segments
+ * left middle right r0 g0 b0 a0 r1 g1 b1 a1 type coloring left_color_type
+ * left middle right r0 g0 b0 a0 r1 g1 b1 a1 type coloring right_color_type
+ * ...
+ */
+
+ string = g_string_new ("GIMP Gradient\n");
+
+ g_string_append_printf (string, "Name: %s\n",
+ gimp_object_get_name (gradient));
+
+ /* Count number of segments */
+ num_segments = 0;
+ seg = gradient->segments;
+
+ while (seg)
+ {
+ num_segments++;
+ seg = seg->next;
+ }
+
+ /* Write rest of file */
+ g_string_append_printf (string, "%d\n", num_segments);
+
+ for (seg = gradient->segments; seg; seg = seg->next)
+ {
+ gchar buf[11][G_ASCII_DTOSTR_BUF_SIZE];
+
+ g_ascii_dtostr (buf[0], G_ASCII_DTOSTR_BUF_SIZE, seg->left);
+ g_ascii_dtostr (buf[1], G_ASCII_DTOSTR_BUF_SIZE, seg->middle);
+ g_ascii_dtostr (buf[2], G_ASCII_DTOSTR_BUF_SIZE, seg->right);
+ g_ascii_dtostr (buf[3], G_ASCII_DTOSTR_BUF_SIZE, seg->left_color.r);
+ g_ascii_dtostr (buf[4], G_ASCII_DTOSTR_BUF_SIZE, seg->left_color.g);
+ g_ascii_dtostr (buf[5], G_ASCII_DTOSTR_BUF_SIZE, seg->left_color.b);
+ g_ascii_dtostr (buf[6], G_ASCII_DTOSTR_BUF_SIZE, seg->left_color.a);
+ g_ascii_dtostr (buf[7], G_ASCII_DTOSTR_BUF_SIZE, seg->right_color.r);
+ g_ascii_dtostr (buf[8], G_ASCII_DTOSTR_BUF_SIZE, seg->right_color.g);
+ g_ascii_dtostr (buf[9], G_ASCII_DTOSTR_BUF_SIZE, seg->right_color.b);
+ g_ascii_dtostr (buf[10], G_ASCII_DTOSTR_BUF_SIZE, seg->right_color.a);
+
+ g_string_append_printf (string,
+ "%s %s %s %s %s %s %s %s %s %s %s %d %d %d %d\n",
+ buf[0], buf[1], buf[2], /* left, middle, right */
+ buf[3], buf[4], buf[5], buf[6], /* left color */
+ buf[7], buf[8], buf[9], buf[10], /* right color */
+ (gint) seg->type,
+ (gint) seg->color,
+ (gint) seg->left_color_type,
+ (gint) seg->right_color_type);
+ }
+
+ if (! g_output_stream_write_all (output, string->str, string->len,
+ NULL, NULL, error))
+ {
+ g_string_free (string, TRUE);
+
+ return FALSE;
+ }
+
+ g_string_free (string, TRUE);
+
+ return TRUE;
+}
+
+gboolean
+gimp_gradient_save_pov (GimpGradient *gradient,
+ GFile *file,
+ GError **error)
+{
+ GOutputStream *output;
+ GString *string;
+ GimpGradientSegment *seg;
+ gchar buf[G_ASCII_DTOSTR_BUF_SIZE];
+ gchar color_buf[4][G_ASCII_DTOSTR_BUF_SIZE];
+ GError *my_error = NULL;
+
+ g_return_val_if_fail (GIMP_IS_GRADIENT (gradient), FALSE);
+ g_return_val_if_fail (G_IS_FILE (file), FALSE);
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+ output = G_OUTPUT_STREAM (g_file_replace (file,
+ NULL, FALSE, G_FILE_CREATE_NONE,
+ NULL, error));
+ if (! output)
+ return FALSE;
+
+ string = g_string_new ("/* color_map file created by GIMP */\n"
+ "/* https://www.gimp.org/ */\n"
+ "color_map {\n");
+
+ for (seg = gradient->segments; seg; seg = seg->next)
+ {
+ /* Left */
+ g_ascii_dtostr (buf, G_ASCII_DTOSTR_BUF_SIZE,
+ seg->left);
+ g_ascii_dtostr (color_buf[0], G_ASCII_DTOSTR_BUF_SIZE,
+ seg->left_color.r);
+ g_ascii_dtostr (color_buf[1], G_ASCII_DTOSTR_BUF_SIZE,
+ seg->left_color.g);
+ g_ascii_dtostr (color_buf[2], G_ASCII_DTOSTR_BUF_SIZE,
+ seg->left_color.b);
+ g_ascii_dtostr (color_buf[3], G_ASCII_DTOSTR_BUF_SIZE,
+ 1.0 - seg->left_color.a);
+
+ g_string_append_printf (string,
+ "\t[%s color rgbt <%s, %s, %s, %s>]\n",
+ buf,
+ color_buf[0], color_buf[1],
+ color_buf[2], color_buf[3]);
+
+ /* Middle */
+ g_ascii_dtostr (buf, G_ASCII_DTOSTR_BUF_SIZE,
+ seg->middle);
+ g_ascii_dtostr (color_buf[0], G_ASCII_DTOSTR_BUF_SIZE,
+ (seg->left_color.r + seg->right_color.r) / 2.0);
+ g_ascii_dtostr (color_buf[1], G_ASCII_DTOSTR_BUF_SIZE,
+ (seg->left_color.g + seg->right_color.g) / 2.0);
+ g_ascii_dtostr (color_buf[2], G_ASCII_DTOSTR_BUF_SIZE,
+ (seg->left_color.b + seg->right_color.b) / 2.0);
+ g_ascii_dtostr (color_buf[3], G_ASCII_DTOSTR_BUF_SIZE,
+ 1.0 - (seg->left_color.a + seg->right_color.a) / 2.0);
+
+ g_string_append_printf (string,
+ "\t[%s color rgbt <%s, %s, %s, %s>]\n",
+ buf,
+ color_buf[0], color_buf[1],
+ color_buf[2], color_buf[3]);
+
+ /* Right */
+ g_ascii_dtostr (buf, G_ASCII_DTOSTR_BUF_SIZE,
+ seg->right);
+ g_ascii_dtostr (color_buf[0], G_ASCII_DTOSTR_BUF_SIZE,
+ seg->right_color.r);
+ g_ascii_dtostr (color_buf[1], G_ASCII_DTOSTR_BUF_SIZE,
+ seg->right_color.g);
+ g_ascii_dtostr (color_buf[2], G_ASCII_DTOSTR_BUF_SIZE,
+ seg->right_color.b);
+ g_ascii_dtostr (color_buf[3], G_ASCII_DTOSTR_BUF_SIZE,
+ 1.0 - seg->right_color.a);
+
+ g_string_append_printf (string,
+ "\t[%s color rgbt <%s, %s, %s, %s>]\n",
+ buf,
+ color_buf[0], color_buf[1],
+ color_buf[2], color_buf[3]);
+ }
+
+ g_string_append_printf (string, "} /* color_map */\n");
+
+ if (! g_output_stream_write_all (output, string->str, string->len,
+ NULL, NULL, &my_error))
+ {
+ GCancellable *cancellable = g_cancellable_new ();
+
+ g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_WRITE,
+ _("Writing POV file '%s' failed: %s"),
+ gimp_file_get_utf8_name (file),
+ my_error->message);
+ g_clear_error (&my_error);
+ g_string_free (string, TRUE);
+
+ /* Cancel the overwrite initiated by g_file_replace(). */
+ g_cancellable_cancel (cancellable);
+ g_output_stream_close (output, cancellable, NULL);
+ g_object_unref (cancellable);
+ g_object_unref (output);
+
+ return FALSE;
+ }
+
+ g_string_free (string, TRUE);
+ g_object_unref (output);
+
+ return TRUE;
+}
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