mirror of https://github.com/GNOME/gimp.git
729 lines
21 KiB
C
729 lines
21 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 <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.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 <glib-object.h>
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#include "libgimpbase/gimpbase.h"
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#include "libgimpcolor/gimpcolor.h"
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#include "core-types.h"
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#include "base/temp-buf.h"
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#include "gimppalette.h"
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#include "gimp-intl.h"
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/* local function prototypes */
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static void gimp_palette_class_init (GimpPaletteClass *klass);
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static void gimp_palette_init (GimpPalette *palette);
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static void gimp_palette_finalize (GObject *object);
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static gint64 gimp_palette_get_memsize (GimpObject *object,
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gint64 *gui_size);
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static void gimp_palette_get_preview_size (GimpViewable *viewable,
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gint size,
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gboolean popup,
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gboolean dot_for_dot,
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gint *width,
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gint *height);
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static gboolean gimp_palette_get_popup_size (GimpViewable *viewable,
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gint width,
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gint height,
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gboolean dot_for_dot,
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gint *popup_width,
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gint *popup_height);
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static TempBuf * gimp_palette_get_new_preview (GimpViewable *viewable,
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gint width,
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gint height);
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static gchar * gimp_palette_get_description (GimpViewable *viewable,
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gchar **tooltip);
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static gboolean gimp_palette_save (GimpData *data,
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GError **error);
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static gchar * gimp_palette_get_extension (GimpData *data);
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static GimpData * gimp_palette_duplicate (GimpData *data,
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gboolean stingy_memory_use);
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static void gimp_palette_entry_free (GimpPaletteEntry *entry);
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/* private variables */
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static GimpDataClass *parent_class = NULL;
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GType
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gimp_palette_get_type (void)
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{
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static GType palette_type = 0;
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if (! palette_type)
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{
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static const GTypeInfo palette_info =
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{
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sizeof (GimpPaletteClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gimp_palette_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpPalette),
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0, /* n_preallocs */
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(GInstanceInitFunc) gimp_palette_init,
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};
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palette_type = g_type_register_static (GIMP_TYPE_DATA,
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"GimpPalette",
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&palette_info, 0);
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}
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return palette_type;
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}
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static void
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gimp_palette_class_init (GimpPaletteClass *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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parent_class = g_type_class_peek_parent (klass);
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object_class->finalize = gimp_palette_finalize;
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gimp_object_class->get_memsize = gimp_palette_get_memsize;
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viewable_class->default_stock_id = "gtk-select-color";
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viewable_class->get_preview_size = gimp_palette_get_preview_size;
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viewable_class->get_popup_size = gimp_palette_get_popup_size;
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viewable_class->get_new_preview = gimp_palette_get_new_preview;
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viewable_class->get_description = gimp_palette_get_description;
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data_class->save = gimp_palette_save;
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data_class->get_extension = gimp_palette_get_extension;
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data_class->duplicate = gimp_palette_duplicate;
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}
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static void
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gimp_palette_init (GimpPalette *palette)
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{
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palette->colors = NULL;
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palette->n_colors = 0;
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palette->n_columns = 0;
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}
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static void
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gimp_palette_finalize (GObject *object)
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{
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GimpPalette *palette = GIMP_PALETTE (object);
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if (palette->colors)
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{
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g_list_foreach (palette->colors, (GFunc) gimp_palette_entry_free, NULL);
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g_list_free (palette->colors);
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palette->colors = 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_palette_get_memsize (GimpObject *object,
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gint64 *gui_size)
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{
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GimpPalette *palette = GIMP_PALETTE (object);
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GList *list;
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gint64 memsize = 0;
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for (list = palette->colors; list; list = g_list_next (list))
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{
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GimpPaletteEntry *entry = list->data;
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memsize += sizeof (GList) + sizeof (GimpPaletteEntry);
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if (entry->name)
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memsize += strlen (entry->name) + 1;
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}
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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 void
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gimp_palette_get_preview_size (GimpViewable *viewable,
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gint size,
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gboolean popup,
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gboolean dot_for_dot,
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gint *width,
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gint *height)
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{
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*width = size;
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*height = size / 2;
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}
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static gboolean
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gimp_palette_get_popup_size (GimpViewable *viewable,
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gint width,
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gint height,
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gboolean dot_for_dot,
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gint *popup_width,
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gint *popup_height)
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{
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GimpPalette *palette = GIMP_PALETTE (viewable);
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gint p_width;
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gint p_height;
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if (! palette->n_colors)
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return FALSE;
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if (palette->n_columns)
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p_width = palette->n_columns;
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else
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p_width = MIN (palette->n_colors, 16);
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p_height = MAX (1, palette->n_colors / p_width);
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if (p_width * 4 > width || p_height * 4 > height)
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{
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*popup_width = p_width * 4;
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*popup_height = p_height * 4;
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return TRUE;
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}
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return FALSE;
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}
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static TempBuf *
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gimp_palette_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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GimpPalette *palette = GIMP_PALETTE (viewable);
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GimpPaletteEntry *entry;
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TempBuf *temp_buf;
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guchar *buf;
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guchar *b;
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GList *list;
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guchar white[3] = { 255, 255, 255 };
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gint columns;
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gint rows;
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gint cell_size;
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gint x, y, i;
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temp_buf = temp_buf_new (width, height,
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3,
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0, 0,
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white);
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if (palette->n_columns > 1)
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cell_size = MAX (4, width / palette->n_columns);
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else
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cell_size = 4;
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columns = width / cell_size;
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rows = height / cell_size;
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buf = temp_buf_data (temp_buf);
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b = g_new (guchar, width * 3);
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list = palette->colors;
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for (y = 0; y < rows && list; y++)
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{
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memset (b, 255, width * 3);
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for (x = 0; x < columns && list; x++)
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{
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entry = (GimpPaletteEntry *) list->data;
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list = g_list_next (list);
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gimp_rgb_get_uchar (&entry->color,
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&b[x * cell_size * 3 + 0],
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&b[x * cell_size * 3 + 1],
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&b[x * cell_size * 3 + 2]);
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for (i = 1; i < cell_size; i++)
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{
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b[(x * cell_size + i) * 3 + 0] = b[(x * cell_size) * 3 + 0];
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b[(x * cell_size + i) * 3 + 1] = b[(x * cell_size) * 3 + 1];
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b[(x * cell_size + i) * 3 + 2] = b[(x * cell_size) * 3 + 2];
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}
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}
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for (i = 0; i < cell_size; i++)
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{
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memcpy (buf + ((y * cell_size + i) * width) * 3, b, width * 3);
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}
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}
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g_free (b);
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return temp_buf;
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}
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static gchar *
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gimp_palette_get_description (GimpViewable *viewable,
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gchar **tooltip)
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{
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GimpPalette *palette = GIMP_PALETTE (viewable);
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if (tooltip)
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*tooltip = NULL;
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return g_strdup_printf ("%s (%d)",
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GIMP_OBJECT (palette)->name,
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palette->n_colors);
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}
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GimpData *
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gimp_palette_new (const gchar *name,
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gboolean stingy_memory_use)
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{
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g_return_val_if_fail (name != NULL, NULL);
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g_return_val_if_fail (*name != '\0', NULL);
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return g_object_new (GIMP_TYPE_PALETTE,
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"name", name,
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NULL);
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}
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GimpData *
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gimp_palette_get_standard (void)
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{
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static GimpData *standard_palette = NULL;
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if (! standard_palette)
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{
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standard_palette = gimp_palette_new ("Standard", FALSE);
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standard_palette->dirty = FALSE;
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gimp_data_make_internal (standard_palette);
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g_object_ref (standard_palette);
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}
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return standard_palette;
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}
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GimpData *
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gimp_palette_load (const gchar *filename,
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gboolean stingy_memory_use,
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GError **error)
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{
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GimpPalette *palette;
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GimpPaletteEntry *entry;
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gchar str[1024];
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gchar *tok;
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FILE *file;
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gint r, g, b;
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gint linenum;
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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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r = g = b = 0;
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file = fopen (filename, "r");
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if (! file)
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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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linenum = 0;
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fread (str, 13, 1, file);
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str[13] = '\0';
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linenum++;
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if (strcmp (str, "GIMP Palette\n"))
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{
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/* bad magic, but maybe it has \r\n at the end of lines? */
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if (!strcmp (str, "GIMP Palette\r"))
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g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
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_("Fatal parse error in palette file '%s': "
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"Missing magic header.\n"
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"Does this file need converting from DOS?"),
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gimp_filename_to_utf8 (filename));
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else
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g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
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_("Fatal parse error in palette file '%s': "
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"Missing magic header."),
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gimp_filename_to_utf8 (filename));
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fclose (file);
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return NULL;
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}
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palette = g_object_new (GIMP_TYPE_PALETTE, NULL);
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if (! fgets (str, sizeof (str), file))
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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 palette file '%s': "
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"Read error in line %d."),
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gimp_filename_to_utf8 (filename), linenum);
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fclose (file);
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g_object_unref (palette);
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return NULL;
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}
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linenum++;
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if (! strncmp (str, "Name: ", strlen ("Name: ")))
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{
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gchar *utf8;
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utf8 = gimp_any_to_utf8 (&str[strlen ("Name: ")], -1,
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_("Invalid UTF-8 string in palette file '%s'"),
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gimp_filename_to_utf8 (filename));
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g_strstrip (utf8);
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gimp_object_set_name (GIMP_OBJECT (palette), utf8);
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g_free (utf8);
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if (! fgets (str, sizeof (str), file))
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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 palette file '%s': "
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"Read error in line %d."),
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gimp_filename_to_utf8 (filename), linenum);
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fclose (file);
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g_object_unref (palette);
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return NULL;
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}
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linenum++;
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if (! strncmp (str, "Columns: ", strlen ("Columns: ")))
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{
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gint columns;
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columns = atoi (g_strstrip (&str[strlen ("Columns: ")]));
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if (columns < 0 || columns > 256)
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{
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g_message (_("Reading palette file '%s': "
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"Invalid number of columns in line %d. "
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"Using default value."),
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gimp_filename_to_utf8 (filename), linenum);
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columns = 0;
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}
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palette->n_columns = columns;
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if (! fgets (str, sizeof (str), file))
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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 palette file '%s': "
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"Read error in line %d."),
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gimp_filename_to_utf8 (filename), linenum);
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fclose (file);
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g_object_unref (palette);
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return NULL;
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}
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linenum++;
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}
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}
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else /* old palette format */
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{
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gchar *basename;
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gchar *utf8;
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basename = g_path_get_basename (filename);
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utf8 = g_filename_to_utf8 (basename, -1, NULL, NULL, NULL);
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g_free (basename);
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gimp_object_set_name (GIMP_OBJECT (palette), utf8);
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g_free (utf8);
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}
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while (! feof (file))
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{
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if (str[0] != '#')
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{
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tok = strtok (str, " \t");
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if (tok)
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r = atoi (tok);
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else
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/* maybe we should just abort? */
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g_message (_("Reading palette file '%s': "
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"Missing RED component in line %d."),
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gimp_filename_to_utf8 (filename), linenum);
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tok = strtok (NULL, " \t");
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if (tok)
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g = atoi (tok);
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else
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g_message (_("Reading palette '%s': "
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"Missing GREEN component in line %d."),
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gimp_filename_to_utf8 (filename), linenum);
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tok = strtok (NULL, " \t");
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if (tok)
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b = atoi (tok);
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else
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g_message (_("Reading palette file '%s': "
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"Missing BLUE component in line %d."),
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gimp_filename_to_utf8 (filename), linenum);
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/* optional name */
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tok = strtok (NULL, "\n");
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if (r < 0 || r > 255 ||
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g < 0 || g > 255 ||
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b < 0 || b > 255)
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g_message (_("Reading palette file '%s': "
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"RGB value out of range in line %d."),
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gimp_filename_to_utf8 (filename), linenum);
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/* don't call gimp_palette_add_entry here, it's rather inefficient */
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entry = g_new0 (GimpPaletteEntry, 1);
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gimp_rgba_set_uchar (&entry->color,
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(guchar) r,
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(guchar) g,
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(guchar) b,
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255);
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entry->name = g_strdup (tok ? tok : _("Untitled"));
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entry->position = palette->n_colors;
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palette->colors = g_list_prepend (palette->colors, entry);
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palette->n_colors++;
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}
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if (! fgets (str, sizeof (str), file))
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{
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if (feof (file))
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break;
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g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
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_("Fatal parse error in palette file '%s': "
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"Read error in line %d."),
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gimp_filename_to_utf8 (filename), linenum);
|
|
fclose (file);
|
|
g_object_unref (palette);
|
|
return NULL;
|
|
}
|
|
|
|
linenum++;
|
|
}
|
|
|
|
fclose (file);
|
|
|
|
palette->colors = g_list_reverse (palette->colors);
|
|
|
|
return GIMP_DATA (palette);
|
|
}
|
|
|
|
static gboolean
|
|
gimp_palette_save (GimpData *data,
|
|
GError **error)
|
|
{
|
|
GimpPalette *palette = GIMP_PALETTE (data);
|
|
GList *list;
|
|
FILE *file;
|
|
|
|
file = fopen (data->filename, "w");
|
|
|
|
if (! file)
|
|
{
|
|
g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_OPEN,
|
|
_("Could not open '%s' for writing: %s"),
|
|
gimp_filename_to_utf8 (data->filename),
|
|
g_strerror (errno));
|
|
return FALSE;
|
|
}
|
|
|
|
fprintf (file, "GIMP Palette\n");
|
|
fprintf (file, "Name: %s\n", GIMP_OBJECT (palette)->name);
|
|
fprintf (file, "Columns: %d\n#\n", CLAMP (palette->n_columns, 0, 256));
|
|
|
|
for (list = palette->colors; list; list = g_list_next (list))
|
|
{
|
|
GimpPaletteEntry *entry = list->data;
|
|
guchar r, g, b;
|
|
|
|
gimp_rgb_get_uchar (&entry->color, &r, &g, &b);
|
|
|
|
fprintf (file, "%3d %3d %3d\t%s\n", r, g, b, entry->name);
|
|
}
|
|
|
|
fclose (file);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gchar *
|
|
gimp_palette_get_extension (GimpData *data)
|
|
{
|
|
return GIMP_PALETTE_FILE_EXTENSION;
|
|
}
|
|
|
|
static GimpData *
|
|
gimp_palette_duplicate (GimpData *data,
|
|
gboolean stingy_memory_use)
|
|
{
|
|
GimpPalette *palette = GIMP_PALETTE (data);
|
|
GimpPalette *new;
|
|
GList *list;
|
|
|
|
new = g_object_new (GIMP_TYPE_PALETTE, NULL);
|
|
|
|
new->n_columns = palette->n_columns;
|
|
|
|
for (list = palette->colors; list; list = g_list_next (list))
|
|
{
|
|
GimpPaletteEntry *entry = list->data;
|
|
|
|
gimp_palette_add_entry (new, entry->name, &entry->color);
|
|
}
|
|
|
|
return GIMP_DATA (new);
|
|
}
|
|
|
|
GimpPaletteEntry *
|
|
gimp_palette_add_entry (GimpPalette *palette,
|
|
const gchar *name,
|
|
const GimpRGB *color)
|
|
{
|
|
GimpPaletteEntry *entry;
|
|
|
|
g_return_val_if_fail (GIMP_IS_PALETTE (palette), NULL);
|
|
g_return_val_if_fail (color != NULL, NULL);
|
|
|
|
entry = g_new0 (GimpPaletteEntry, 1);
|
|
|
|
entry->color = *color;
|
|
|
|
entry->name = g_strdup (name ? name : _("Untitled"));
|
|
entry->position = palette->n_colors;
|
|
|
|
palette->colors = g_list_append (palette->colors, entry);
|
|
palette->n_colors += 1;
|
|
|
|
/* will make the palette dirty too */
|
|
gimp_object_name_changed (GIMP_OBJECT (palette));
|
|
|
|
return entry;
|
|
}
|
|
|
|
void
|
|
gimp_palette_delete_entry (GimpPalette *palette,
|
|
GimpPaletteEntry *entry)
|
|
{
|
|
GList *list;
|
|
gint pos = 0;
|
|
|
|
g_return_if_fail (GIMP_IS_PALETTE (palette));
|
|
g_return_if_fail (entry != NULL);
|
|
|
|
if (g_list_find (palette->colors, entry))
|
|
{
|
|
pos = entry->position;
|
|
gimp_palette_entry_free (entry);
|
|
|
|
palette->colors = g_list_remove (palette->colors, entry);
|
|
|
|
palette->n_colors--;
|
|
|
|
for (list = g_list_nth (palette->colors, pos);
|
|
list;
|
|
list = g_list_next (list))
|
|
{
|
|
entry = (GimpPaletteEntry *) list->data;
|
|
|
|
entry->position = pos++;
|
|
}
|
|
|
|
if (palette->n_colors == 0)
|
|
{
|
|
GimpRGB color;
|
|
|
|
gimp_rgba_set (&color, 0.0, 0.0, 0.0, GIMP_OPACITY_OPAQUE);
|
|
|
|
gimp_palette_add_entry (palette,
|
|
_("Black"),
|
|
&color);
|
|
}
|
|
|
|
/* will make the palette dirty too */
|
|
gimp_object_name_changed (GIMP_OBJECT (palette));
|
|
}
|
|
}
|
|
|
|
void
|
|
gimp_palette_set_n_columns (GimpPalette *palette,
|
|
gint n_columns)
|
|
{
|
|
g_return_if_fail (GIMP_IS_PALETTE (palette));
|
|
|
|
n_columns = CLAMP (n_columns, 0, 64);
|
|
|
|
if (palette->n_columns != n_columns)
|
|
{
|
|
palette->n_columns = n_columns;
|
|
|
|
gimp_data_dirty (GIMP_DATA (palette));
|
|
}
|
|
}
|
|
|
|
gint
|
|
gimp_palette_get_n_columns (GimpPalette *palette)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_PALETTE (palette), 0);
|
|
|
|
return palette->n_columns;
|
|
}
|
|
|
|
|
|
/* private functions */
|
|
|
|
static void
|
|
gimp_palette_entry_free (GimpPaletteEntry *entry)
|
|
{
|
|
g_return_if_fail (entry != NULL);
|
|
|
|
g_free (entry->name);
|
|
g_free (entry);
|
|
}
|