irendermodule.hxx

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 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
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 */

#pragma once

#include <memory>

namespace basegfx
{
    class B2IVector;
}

namespace canvas
{
    struct ISurface;

    struct Vertex
    {
        float r,g,b,a;
        float u,v;
        float x,y,z;
    };

    struct IRenderModule
    {
        enum class PrimitiveType
        {
            Unknown,
            Triangle,
            Quad
        };

        virtual ~IRenderModule() {}

        virtual void lock() const = 0;

        virtual void unlock() const = 0;

        virtual ::basegfx::B2IVector getPageSize() = 0;

        virtual std::shared_ptr<ISurface> createSurface( const ::basegfx::B2IVector& surfaceSize ) = 0;

        virtual void      beginPrimitive( PrimitiveType eType ) = 0;

        virtual void      endPrimitive() = 0;

        virtual void      pushVertex( const Vertex& vertex ) = 0;

        virtual bool      isError() = 0;
    };

    class RenderModuleGuard
    {
    public:
        explicit RenderModuleGuard( const std::shared_ptr<IRenderModule>& rRenderModule ) :
            mpRenderModule( rRenderModule )
        {
            mpRenderModule->lock();
        }

        ~RenderModuleGuard()
        {
            mpRenderModule->unlock();
        }

        RenderModuleGuard(const RenderModuleGuard&) = delete;
        RenderModuleGuard& operator=( const RenderModuleGuard& ) = delete;
    private:
        const std::shared_ptr<IRenderModule> mpRenderModule;
    };
}

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