tint_component.h

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#pragma once
#include "ga/color.h"
#include "ga/render.h"
#include "ga/graph/component.h"
 
namespace ga {
 
class Tint : public Component
{
public:
    Color color { 1.f };
 
protected:
    friend class Node;
    void setNode( std::shared_ptr<Node> node ) override
    {
        Component::setNode( node );
        // hook into node's draw cycle
        if ( node ) {
            m_connWillDraw = node->onWillDraw.connect( [this]() {
                m_pGlobalColor = getRenderer().getGlobalColor();
                getRenderer().setGlobalColor( m_pGlobalColor * color );
            } );
 
            m_connDidDraw = node->onDidDraw.connect( [this]() {
                getRenderer().setGlobalColor( m_pGlobalColor );
            } );
        } else {
            m_connWillDraw.disconnect();
            m_connDidDraw.disconnect();
        }
    }
    ScopedConnection m_connWillDraw, m_connDidDraw;
    Color m_pGlobalColor;
};
 
}  // namespace ga