HaveBackground.hpp

/*
 * HaveBackground.hpp
 *
 *  Created on: 25.05.2017
 *      Author: jakub
 */

#ifndef SSG_HAVEBACKGROUND_HPP_
#define SSG_HAVEBACKGROUND_HPP_

#include <SFML/Graphics.hpp>

#include <memory>
#include <vector>
#include <algorithm>
#include "ColorProvider.hpp"
#include "Element.hpp"

typedef std::pair<sf::Color, float> GradientPoint;
typedef std::vector<GradientPoint> GradientVector;
typedef std::vector<sf::Color> ColorVector;
typedef std::array<sf::Color, 4> GradientModifier;

#define GradientModifierNone { \
        {sf::Color::Transparent, sf::Color::Transparent, sf::Color::Transparent, sf::Color::Transparent} \
}

class HaveBackground {
public:
    friend Element;

    HaveBackground(ColorProvider& colorProvider);
    void setBackgroundTexture(const std::shared_ptr<sf::Texture>& backgroundTexture);
    void setBackgroundTextureRect(const sf::IntRect& value);
    void setGradientType(GradientType gradientType);
    void updateGradient(sf::FloatRect& area);
    void setGradientPoints(const ColorVector& evenlyColors);
    void setGradientPoints(const GradientVector& gradientPoints);
    void setGradientModifier(const GradientModifier& gradientModifier);
    void setBackgroundSymbol(const sf::VertexArray& value);
    void setBackgroundSymbolTransform(const sf::Transform& value);
    void setBackgroundSymbolShift(const sf::Vector2f& value);
    sf::Vector2f getBackgroundSymbolShift() const;
    void setBackgroundSymbolStrech(bool value);
    void setBackgroundSymbolColor(sf::Color col);
    void mulBackgroundSymbolColor(sf::Color col);
    void initDefaultButtonBackgroundStyle(ColorProvider& colorProvider);
    bool isBackroundTextureRectActive() const;

    static void setDefaultBackgroundColor(sf::Color defaultBackgroundColor);
    static sf::Color sum(sf::Color col, sf::Vector3i mod);

protected:
    void drawBackgroundSymbol(
        sf::FloatRect area,
        sf::RenderTarget& target,
        const sf::RenderStates& states = sf::RenderStates()
    );

    std::shared_ptr<sf::Texture> backgroundTexture;
    sf::VertexArray backgroundSymbol;
    sf::VertexArray gradient;
    GradientVector gradientPoints;
    GradientType gradientType;
    GradientModifier gradientModifier;
    sf::FloatRect lastGradientUpdateArea;
    sf::IntRect backgroundTextureRect;
    sf::Transform backgroundSymbolTransform;
    sf::Vector2f backgroundSymbolShift;
    bool backgroundSymbolStrech;

    static sf::Color defaultBackgroundColor;
    static std::shared_ptr<sf::Texture> defaultTexture;
};


#endif /* SSG_HAVEBACKGROUND_HPP_ */