path: root/src/utils/rgba_color.cpp

/*
 * UltraStar Deluxe - Karaoke Game
 *
 * UltraStar Deluxe is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 2
 * 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; see the file COPYING. If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#include <cstddef>

#include "rgba_color.hpp"

namespace usdx
{
	RgbaColor::RgbaColor(int red, int green, int blue, int alpha)
		: RgbColor(red, green, blue), alpha(alpha/255.0f)
	{
	}

	RgbaColor::RgbaColor(float red, float green, float blue, float alpha)
		: RgbColor(red, green, blue), alpha(alpha)
	{
	}

	RgbaColor::RgbaColor(const RgbaColor& color)
		: RgbColor(color), alpha(color.alpha)
	{
	}

	RgbaColor::RgbaColor(const RgbColor& color, int alpha)
		: RgbColor(color), alpha(alpha / 255.0f)
	{
	}

	RgbaColor::RgbaColor(const RgbColor& color, float alpha)
		: RgbColor(color), alpha(alpha)
	{
	}

	RgbaColor& RgbaColor::operator=(const RgbaColor& color)
	{
		if (this != &color) {
			RgbColor::operator=(color);
			alpha = color.alpha;
		}

		return *this;
	}

	RgbaColor& RgbaColor::operator=(const RgbColor& color)
	{
		if (this != &color) {
			RgbColor::operator=(color);
			alpha = 1.0f;
		}

		return *this;
	}

	float RgbaColor::get_alpha(void) const
	{
		return alpha;
	}

	const GLubyte* RgbaColor::get_array(size_t len) const
	{
		if (array_length != len && array != NULL) {
			delete[] array;
			array = NULL;
			array_length = 0;
		}

		if (array == NULL) {
			int components = get_array_comonent_count();
			array = new GLubyte[len * components];
			array_length = len;

			for (size_t i = 0; i < len; i++) {
				array[i*components] = get_red() * 255.0f;
				array[(i*components) + 1] = get_green() * 255.0f;
				array[(i*components) + 2] = get_blue() * 255.0f;
				array[(i*components) + 3] = alpha * 255.0f;
			}
		}

		return array;
	}

	int RgbaColor::get_array_comonent_count(void) const
	{
		return 4;
	}
};