gds-render/layer/color-palette.c

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/*
* GDSII-Converter
* Copyright (C) 2019 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of GDSII-Converter.
*
* GDSII-Converter is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* GDSII-Converter 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 GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file color-palette.c
* @brief Class representing a color palette
* @author Mario Hüttel <mario.huettel@gmx.net>
*/
#include <gds-render/layer/color-palette.h>
struct _ColorPalette {
/* Inheritance */
GObject parent;
/* Custom fields */
/** @brief The internal array to store the colors */
GdkRGBA *color_array;
/** @brief The length of the _ColorPalette::color_array array */
unsigned int color_array_length;
gpointer dummy[4];
};
G_DEFINE_TYPE(ColorPalette, color_palette, G_TYPE_OBJECT)
/**
* @brief color_palette_fill_with_resource
* @param palette
* @param resource_name
* @return 0 if successful
*/
static int color_palette_fill_with_resource(ColorPalette *palette, char *resource_name)
{
GBytes *data;
char *char_array;
if (!palette || !resource_name)
return -1;
data = g_resources_lookup_data(resource_name, 0, NULL);
if (!data)
return -2;
g_bytes_unref(data);
return 0;
}
ColorPalette *color_palette_new_from_resource(char *resource_name)
{
ColorPalette *palette;
palette = GDS_RENDER_COLOR_PALETTE(g_object_new(TYPE_GDS_RENDER_COLOR_PALETTE, NULL));
if (palette)
(void)color_palette_fill_with_resource(palette, resource_name);
return palette;
}
GdkRGBA *color_palette_get_color(ColorPalette *palette, GdkRGBA *color, unsigned int index)
{
GdkRGBA *c = NULL;
if (!palette)
goto ret_c;
if (index >= palette->color_array_length)
goto ret_c;
if (color)
c = color;
else
c = (GdkRGBA *)malloc(sizeof(GdkRGBA));
/* Copy color */
c->red = palette->color_array[index].red;
c->green = palette->color_array[index].green;
c->blue = palette->color_array[index].blue;
c->alpha = palette->color_array[index].alpha;
ret_c:
return c;
}
unsigned int color_palette_get_color_count(ColorPalette *palette)
{
unsigned int return_val = 0;
if (palette)
return_val = palette->color_array_length;
return return_val;
}
static void color_palette_class_init(ColorPaletteClass *klass)
{
(void)klass;
/* Nothing to do for now */
return;
}
static void color_palette_init(ColorPalette *self)
{
self->color_array = NULL;
self->color_array_length = 0;
}