226 lines
8.2 KiB
C
226 lines
8.2 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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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 3 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, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "libpikabase/pikabase.h"
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#include "core-types.h"
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#include "pikagradient.h"
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#include "pikagradient-save.h"
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#include "pika-intl.h"
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gboolean
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pika_gradient_save (PikaData *data,
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GOutputStream *output,
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GError **error)
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{
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PikaGradient *gradient = PIKA_GRADIENT (data);
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GString *string;
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PikaGradientSegment *seg;
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gint num_segments;
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/* File format is:
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*
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* PIKA Gradient
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* Name: name
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* number_of_segments
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* left middle right r0 g0 b0 a0 r1 g1 b1 a1 type coloring left_color_type
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* left middle right r0 g0 b0 a0 r1 g1 b1 a1 type coloring right_color_type
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* ...
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*/
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string = g_string_new ("PIKA Gradient\n");
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g_string_append_printf (string, "Name: %s\n",
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pika_object_get_name (gradient));
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/* Count number of segments */
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num_segments = 0;
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seg = gradient->segments;
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while (seg)
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{
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num_segments++;
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seg = seg->next;
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}
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/* Write rest of file */
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g_string_append_printf (string, "%d\n", num_segments);
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for (seg = gradient->segments; seg; seg = seg->next)
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{
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gchar buf[11][G_ASCII_DTOSTR_BUF_SIZE];
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g_ascii_dtostr (buf[0], G_ASCII_DTOSTR_BUF_SIZE, seg->left);
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g_ascii_dtostr (buf[1], G_ASCII_DTOSTR_BUF_SIZE, seg->middle);
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g_ascii_dtostr (buf[2], G_ASCII_DTOSTR_BUF_SIZE, seg->right);
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g_ascii_dtostr (buf[3], G_ASCII_DTOSTR_BUF_SIZE, seg->left_color.r);
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g_ascii_dtostr (buf[4], G_ASCII_DTOSTR_BUF_SIZE, seg->left_color.g);
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g_ascii_dtostr (buf[5], G_ASCII_DTOSTR_BUF_SIZE, seg->left_color.b);
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g_ascii_dtostr (buf[6], G_ASCII_DTOSTR_BUF_SIZE, seg->left_color.a);
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g_ascii_dtostr (buf[7], G_ASCII_DTOSTR_BUF_SIZE, seg->right_color.r);
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g_ascii_dtostr (buf[8], G_ASCII_DTOSTR_BUF_SIZE, seg->right_color.g);
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g_ascii_dtostr (buf[9], G_ASCII_DTOSTR_BUF_SIZE, seg->right_color.b);
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g_ascii_dtostr (buf[10], G_ASCII_DTOSTR_BUF_SIZE, seg->right_color.a);
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g_string_append_printf (string,
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"%s %s %s %s %s %s %s %s %s %s %s %d %d %d %d\n",
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buf[0], buf[1], buf[2], /* left, middle, right */
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buf[3], buf[4], buf[5], buf[6], /* left color */
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buf[7], buf[8], buf[9], buf[10], /* right color */
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(gint) seg->type,
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(gint) seg->color,
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(gint) seg->left_color_type,
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(gint) seg->right_color_type);
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}
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if (! g_output_stream_write_all (output, string->str, string->len,
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NULL, NULL, error))
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{
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g_string_free (string, TRUE);
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return FALSE;
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}
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g_string_free (string, TRUE);
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return TRUE;
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}
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gboolean
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pika_gradient_save_pov (PikaGradient *gradient,
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GFile *file,
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GError **error)
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{
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GOutputStream *output;
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GString *string;
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PikaGradientSegment *seg;
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gchar buf[G_ASCII_DTOSTR_BUF_SIZE];
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gchar color_buf[4][G_ASCII_DTOSTR_BUF_SIZE];
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GError *my_error = NULL;
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g_return_val_if_fail (PIKA_IS_GRADIENT (gradient), FALSE);
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g_return_val_if_fail (G_IS_FILE (file), FALSE);
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g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
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output = G_OUTPUT_STREAM (g_file_replace (file,
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NULL, FALSE, G_FILE_CREATE_NONE,
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NULL, error));
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if (! output)
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return FALSE;
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string = g_string_new ("/* color_map file created by PIKA */\n"
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"/* https://heckin.technology/AlderconeStudio/PIKApp/ */\n"
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"color_map {\n");
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for (seg = gradient->segments; seg; seg = seg->next)
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{
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/* Left */
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g_ascii_dtostr (buf, G_ASCII_DTOSTR_BUF_SIZE,
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seg->left);
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g_ascii_dtostr (color_buf[0], G_ASCII_DTOSTR_BUF_SIZE,
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seg->left_color.r);
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g_ascii_dtostr (color_buf[1], G_ASCII_DTOSTR_BUF_SIZE,
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seg->left_color.g);
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g_ascii_dtostr (color_buf[2], G_ASCII_DTOSTR_BUF_SIZE,
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seg->left_color.b);
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g_ascii_dtostr (color_buf[3], G_ASCII_DTOSTR_BUF_SIZE,
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1.0 - seg->left_color.a);
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g_string_append_printf (string,
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"\t[%s color rgbt <%s, %s, %s, %s>]\n",
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buf,
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color_buf[0], color_buf[1],
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color_buf[2], color_buf[3]);
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/* Middle */
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g_ascii_dtostr (buf, G_ASCII_DTOSTR_BUF_SIZE,
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seg->middle);
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g_ascii_dtostr (color_buf[0], G_ASCII_DTOSTR_BUF_SIZE,
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(seg->left_color.r + seg->right_color.r) / 2.0);
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g_ascii_dtostr (color_buf[1], G_ASCII_DTOSTR_BUF_SIZE,
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(seg->left_color.g + seg->right_color.g) / 2.0);
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g_ascii_dtostr (color_buf[2], G_ASCII_DTOSTR_BUF_SIZE,
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(seg->left_color.b + seg->right_color.b) / 2.0);
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g_ascii_dtostr (color_buf[3], G_ASCII_DTOSTR_BUF_SIZE,
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1.0 - (seg->left_color.a + seg->right_color.a) / 2.0);
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g_string_append_printf (string,
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"\t[%s color rgbt <%s, %s, %s, %s>]\n",
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buf,
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color_buf[0], color_buf[1],
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color_buf[2], color_buf[3]);
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/* Right */
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g_ascii_dtostr (buf, G_ASCII_DTOSTR_BUF_SIZE,
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seg->right);
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g_ascii_dtostr (color_buf[0], G_ASCII_DTOSTR_BUF_SIZE,
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seg->right_color.r);
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g_ascii_dtostr (color_buf[1], G_ASCII_DTOSTR_BUF_SIZE,
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seg->right_color.g);
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g_ascii_dtostr (color_buf[2], G_ASCII_DTOSTR_BUF_SIZE,
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seg->right_color.b);
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g_ascii_dtostr (color_buf[3], G_ASCII_DTOSTR_BUF_SIZE,
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1.0 - seg->right_color.a);
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g_string_append_printf (string,
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"\t[%s color rgbt <%s, %s, %s, %s>]\n",
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buf,
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color_buf[0], color_buf[1],
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color_buf[2], color_buf[3]);
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}
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g_string_append_printf (string, "} /* color_map */\n");
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if (! g_output_stream_write_all (output, string->str, string->len,
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NULL, NULL, &my_error))
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{
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GCancellable *cancellable = g_cancellable_new ();
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g_set_error (error, PIKA_DATA_ERROR, PIKA_DATA_ERROR_WRITE,
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_("Writing POV file '%s' failed: %s"),
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pika_file_get_utf8_name (file),
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my_error->message);
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g_clear_error (&my_error);
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g_string_free (string, TRUE);
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/* Cancel the overwrite initiated by g_file_replace(). */
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g_cancellable_cancel (cancellable);
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g_output_stream_close (output, cancellable, NULL);
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g_object_unref (cancellable);
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g_object_unref (output);
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return FALSE;
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}
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g_string_free (string, TRUE);
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g_object_unref (output);
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return TRUE;
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}
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