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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimppalettemru.c
* Copyright (C) 2014 Michael Natterer <mitch@gimp.org>
*
* 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 <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpconfig/gimpconfig.h"
#include "core-types.h"
#include "gimppalettemru.h"
#include "gimp-intl.h"
#define MAX_N_COLORS 256
#define RGBA_EPSILON 1e-4
enum
{
COLOR_HISTORY = 1
};
G_DEFINE_TYPE (GimpPaletteMru, gimp_palette_mru, GIMP_TYPE_PALETTE)
#define parent_class gimp_palette_mru_parent_class
static void
gimp_palette_mru_class_init (GimpPaletteMruClass *klass)
{
}
static void
gimp_palette_mru_init (GimpPaletteMru *palette)
{
}
/* public functions */
GimpData *
gimp_palette_mru_new (const gchar *name)
{
GimpPaletteMru *palette;
g_return_val_if_fail (name != NULL, NULL);
g_return_val_if_fail (*name != '\0', NULL);
palette = g_object_new (GIMP_TYPE_PALETTE_MRU,
"name", name,
"mime-type", "application/x-gimp-palette",
NULL);
return GIMP_DATA (palette);
}
void
gimp_palette_mru_load (GimpPaletteMru *mru,
GFile *file)
{
GimpPalette *palette;
GScanner *scanner;
GTokenType token;
g_return_if_fail (GIMP_IS_PALETTE_MRU (mru));
g_return_if_fail (G_IS_FILE (file));
palette = GIMP_PALETTE (mru);
scanner = gimp_scanner_new_gfile (file, NULL);
if (! scanner)
return;
g_scanner_scope_add_symbol (scanner, 0, "color-history",
GINT_TO_POINTER (COLOR_HISTORY));
token = G_TOKEN_LEFT_PAREN;
while (g_scanner_peek_next_token (scanner) == token)
{
token = g_scanner_get_next_token (scanner);
switch (token)
{
case G_TOKEN_LEFT_PAREN:
token = G_TOKEN_SYMBOL;
break;
case G_TOKEN_SYMBOL:
if (scanner->value.v_symbol == GINT_TO_POINTER (COLOR_HISTORY))
{
while (g_scanner_peek_next_token (scanner) == G_TOKEN_LEFT_PAREN)
{
GimpRGB color;
if (! gimp_scanner_parse_color (scanner, &color))
goto end;
gimp_palette_add_entry (palette, -1,
_("History Color"), &color);
if (gimp_palette_get_n_colors (palette) == MAX_N_COLORS)
goto end;
}
}
token = G_TOKEN_RIGHT_PAREN;
break;
case G_TOKEN_RIGHT_PAREN:
token = G_TOKEN_LEFT_PAREN;
break;
default: /* do nothing */
break;
}
}
end:
gimp_scanner_destroy (scanner);
}
void
gimp_palette_mru_save (GimpPaletteMru *mru,
GFile *file)
{
GimpPalette *palette;
GimpConfigWriter *writer;
GList *list;
g_return_if_fail (GIMP_IS_PALETTE_MRU (mru));
g_return_if_fail (G_IS_FILE (file));
writer = gimp_config_writer_new_gfile (file,
TRUE,
"GIMP colorrc\n\n"
"This file holds a list of "
"recently used colors.",
NULL);
if (! writer)
return;
palette = GIMP_PALETTE (mru);
gimp_config_writer_open (writer, "color-history");
for (list = palette->colors; list; list = g_list_next (list))
{
GimpPaletteEntry *entry = list->data;
gchar buf[4][G_ASCII_DTOSTR_BUF_SIZE];
g_ascii_dtostr (buf[0], G_ASCII_DTOSTR_BUF_SIZE, entry->color.r);
g_ascii_dtostr (buf[1], G_ASCII_DTOSTR_BUF_SIZE, entry->color.g);
g_ascii_dtostr (buf[2], G_ASCII_DTOSTR_BUF_SIZE, entry->color.b);
g_ascii_dtostr (buf[3], G_ASCII_DTOSTR_BUF_SIZE, entry->color.a);
gimp_config_writer_open (writer, "color-rgba");
gimp_config_writer_printf (writer, "%s %s %s %s",
buf[0], buf[1], buf[2], buf[3]);
gimp_config_writer_close (writer);
}
gimp_config_writer_close (writer);
gimp_config_writer_finish (writer, "end of colorrc", NULL);
}
void
gimp_palette_mru_add (GimpPaletteMru *mru,
const GimpRGB *color)
{
GimpPalette *palette;
GList *list;
g_return_if_fail (GIMP_IS_PALETTE_MRU (mru));
g_return_if_fail (color != NULL);
palette = GIMP_PALETTE (mru);
/* is the added color already there? */
for (list = gimp_palette_get_colors (palette);
list;
list = g_list_next (list))
{
GimpPaletteEntry *entry = list->data;
if (gimp_rgba_distance (&entry->color, color) < RGBA_EPSILON)
{
gimp_palette_move_entry (palette, entry, 0);
/* Even though they are nearly the same color, let's make them
* exactly equal.
*/
gimp_palette_set_entry_color (palette, 0, color);
return;
}
}
if (gimp_palette_get_n_colors (palette) == MAX_N_COLORS)
{
gimp_palette_delete_entry (palette,
gimp_palette_get_entry (palette,
MAX_N_COLORS - 1));
}
gimp_palette_add_entry (palette, 0, _("History Color"), color);
}
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