MRViewportParametersAction.h

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#pragma once
#include <MRMesh/MRHistoryAction.h>
#include <MRMesh/MRHeapBytes.h>
#include "MRViewport.h"
#include "MRViewer.h"
 
namespace MR
{
 
 
class ViewportParametersAction : public HistoryAction
{
public:
    ViewportParametersAction( std::string name, ViewportMask viewports = ViewportMask::all() ) :
        name_(name)
    {
        Viewer* viewer = &getViewerInstance();
        for ( ViewportId id : viewports & viewer->getPresentViewports() )
            saveParameters_.push_back( { id, viewer->viewport( id ).getParameters() } );
    }
 
    virtual std::string name() const override
    {
        return name_;
    }
 
    virtual void action( HistoryAction::Type ) override
    {
        // Assume user does not change viewports number
        Viewer* viewer = &getViewerInstance();
        for ( auto& [id, parameters] : saveParameters_ )
            if ( viewer->getPresentViewports().contains( id ) )
            {
                Viewport::Parameters t = viewer->viewport( id ).getParameters();
                viewer->viewport( id ).setParameters( parameters );
                parameters = t;
            }
    }
 
    [[nodiscard]] virtual size_t heapBytes() const override
    {
        return name_.capacity() + MR::heapBytes( saveParameters_ );
    }
 
private:
    std::vector<std::pair<ViewportId, Viewport::Parameters>> saveParameters_;
 
    std::string name_;
};
 
} // namespace MR