Start development of color-palette class
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include/gds-render/layer/color-palette.h
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include/gds-render/layer/color-palette.h
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/*
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* GDSII-Converter
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* Copyright (C) 2019 Mario Hüttel <mario.huettel@gmx.net>
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*
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* This file is part of GDSII-Converter.
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*
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* GDSII-Converter is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* GDSII-Converter 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 GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file color-palette.h
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* @brief Class representing a color palette
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* @author Mario Hüttel <mario.huettel@gmx.net>
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*/
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#ifndef _COLOR_PALETTE_H_
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#define _COLOR_PALETTE_H_
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#include <glib.h>
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#include <gtk/gtk.h>
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G_BEGIN_DECLS
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G_DECLARE_FINAL_TYPE(ColorPalette, color_palette, GDS_RENDER, COLOR_PALETTE, GObject);
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#define TYPE_GDS_RENDER_COLOR_PALETTE (color_palette_get_type())
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/**
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* @brief Create a new object with from a resource containing the html hex color scheme
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* @param resource_name Name of the resource
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* @return New object
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*/
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ColorPalette *color_palette_new_from_resource(char *resource_name);
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/**
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* @brief Get the n-th color in the palette identified by the index.
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*
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* This function fills the nth color into the supplied \p color.
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* \p color is returned.
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*
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* If \p color is NULL, a new GdkRGBA is created and returned.
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* This element must be freed afterwards.
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*
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* @param palette Color palette
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* @param color GdkRGBA struct to fill data in. May be NULL.
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* @param index Index of color. Starts at 0
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* @return GdkRGBA color. If \p color is NULL, the returned color must be freed afterwards
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*/
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GdkRGBA *color_palette_get_color(ColorPalette *palette, GdkRGBA *color, unsigned int index);
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/**
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* @brief Return amount of stored colors in \p palette
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* @param palette Color palette
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* @return Count of colors
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*/
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unsigned int color_palette_get_color_count(ColorPalette *palette);
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G_END_DECLS
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#endif /* _COLOR_PALETTE_H_ */
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123
layer/color-palette.c
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123
layer/color-palette.c
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/*
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* GDSII-Converter
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* Copyright (C) 2019 Mario Hüttel <mario.huettel@gmx.net>
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*
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* This file is part of GDSII-Converter.
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*
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* GDSII-Converter is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* GDSII-Converter 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 GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file color-palette.c
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* @brief Class representing a color palette
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* @author Mario Hüttel <mario.huettel@gmx.net>
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*/
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#include <gds-render/layer/color-palette.h>
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struct _ColorPalette {
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/* Inheritance */
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GObject parent;
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/* Custom fields */
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/** @brief The internal array to store the colors */
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GdkRGBA *color_array;
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/** @brief The length of the _ColorPalette::color_array array */
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unsigned int color_array_length;
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gpointer dummy[4];
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};
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G_DEFINE_TYPE(ColorPalette, color_palette, G_TYPE_OBJECT)
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/**
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* @brief color_palette_fill_with_resource
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* @param palette
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* @param resource_name
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* @return 0 if successful
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*/
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static int color_palette_fill_with_resource(ColorPalette *palette, char *resource_name)
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{
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GBytes *data;
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char *char_array;
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if (!palette || !resource_name)
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return -1;
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data = g_resources_lookup_data(resource_name, 0, NULL);
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if (!data)
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return -2;
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g_bytes_unref(data);
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return 0;
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}
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ColorPalette *color_palette_new_from_resource(char *resource_name)
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{
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ColorPalette *palette;
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palette = GDS_RENDER_COLOR_PALETTE(g_object_new(TYPE_GDS_RENDER_COLOR_PALETTE, NULL));
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if (palette)
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(void)color_palette_fill_with_resource(palette, resource_name);
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return palette;
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}
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GdkRGBA *color_palette_get_color(ColorPalette *palette, GdkRGBA *color, unsigned int index)
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{
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GdkRGBA *c = NULL;
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if (!palette)
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goto ret_c;
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if (index >= palette->color_array_length)
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goto ret_c;
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if (color)
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c = color;
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else
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c = (GdkRGBA *)malloc(sizeof(GdkRGBA));
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/* Copy color */
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c->red = palette->color_array[index].red;
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c->green = palette->color_array[index].green;
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c->blue = palette->color_array[index].blue;
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c->alpha = palette->color_array[index].alpha;
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ret_c:
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return c;
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}
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unsigned int color_palette_get_color_count(ColorPalette *palette)
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{
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unsigned int return_val = 0;
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if (palette)
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return_val = palette->color_array_length;
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return return_val;
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}
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static void color_palette_class_init(ColorPaletteClass *klass)
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{
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/* Nothing to do for now */
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return;
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}
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static void color_palette_init(ColorPalette *self)
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{
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self->color_array = NULL;
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self->color_array_length = 0;
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}
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