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/**
* @file
* @brief Header file for Color class
* @author Jonathan Thomas <jonathan@openshot.org>
*
* @section LICENSE
*
* Copyright (c) 2008-2014 OpenShot Studios, LLC
* <http://www.openshotstudios.com/>. This file is part of
* OpenShot Library (libopenshot), an open-source project dedicated to
* delivering high quality video editing and animation solutions to the
* world. For more information visit <http://www.openshot.org/>.
*
* OpenShot Library (libopenshot) is free software: you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* OpenShot Library (libopenshot) 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef OPENSHOT_COLOR_H
#define OPENSHOT_COLOR_H
#include "KeyFrame.h"
#include <QtGui/QColor>
namespace openshot {
/**
* @brief This class represents a color (used on the timeline and clips)
*
* Colors are represented by 4 curves, representing red, green, blue, and alpha. The curves
* can be used to animate colors over time.
*/
class Color{
public:
Keyframe red; ///<Curve representing the red value (0 - 255)
Keyframe green; ///<Curve representing the green value (0 - 255)
Keyframe blue; ///<Curve representing the red value (0 - 255)
Keyframe alpha; ///<Curve representing the alpha value (0 - 255)
/// Default constructor
Color() {};
/// Constructor which takes a HEX color code
Color(string color_hex);
/// Constructor which takes R,G,B,A
Color(unsigned char Red, unsigned char Green, unsigned char Blue, unsigned char Alpha);
/// Constructor which takes 4 existing Keyframe curves
Color(Keyframe Red, Keyframe Green, Keyframe Blue, Keyframe Alpha);
/// Get the HEX value of a color at a specific frame
string GetColorHex(int64_t frame_number);
/// Get the distance between 2 RGB pairs. (0=identical colors, 10=very close colors, 760=very different colors)
static long GetDistance(long R1, long G1, long B1, long R2, long G2, long B2);
/// Get and Set JSON methods
string Json(); ///< Generate JSON string of this object
Json::Value JsonValue(); ///< Generate Json::JsonValue for this object
void SetJson(string value); ///< Load JSON string into this object
void SetJsonValue(Json::Value root); ///< Load Json::JsonValue into this object
};
}
#endif
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