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