Renderer2D.hpp

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/* 
 * Renderer2D.hpp 
 *
 * This file is part of the Chemical Data Processing Toolkit
 *
 * Copyright (C) 2003 Thomas Seidel <thomas.seidel@univie.ac.at>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; see the file COPYING. If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
 
#ifndef CDPL_VIS_RENDERER2D_HPP
#define CDPL_VIS_RENDERER2D_HPP
 
#include <string>
 
#include "CDPL/Vis/APIPrefix.hpp"
#include "CDPL/Math/VectorArray.hpp"
#include "CDPL/Math/Matrix.hpp"
 
 
namespace CDPL
{
 
    namespace Vis
    {
 
        class Pen;
        class Brush;
        class Font;
        class Path2D;
 
        class CDPL_VIS_API Renderer2D
        {
 
          public:
            virtual ~Renderer2D() {}
 
            virtual void saveState() = 0;
 
            virtual void restoreState() = 0;
 
            virtual void setTransform(const Math::Matrix3D& xform) = 0;
 
            virtual void transform(const Math::Matrix3D& xform) = 0;
 
            virtual void setPen(const Pen& pen) = 0;
 
            virtual void setBrush(const Brush& brush) = 0;
 
            virtual void setFont(const Font& font) = 0;
 
            virtual void drawRectangle(double x, double y, double width, double height) = 0;
 
            virtual void drawPolygon(const Math::Vector2DArray& points) = 0;
 
            virtual void drawLine(double x1, double y1, double x2, double y2) = 0;
 
            virtual void drawPolyline(const Math::Vector2DArray& points) = 0;
 
            virtual void drawLineSegments(const Math::Vector2DArray& points) = 0;
 
            virtual void drawPoint(double x, double y) = 0;
 
            virtual void drawEllipse(double x, double y, double width, double height) = 0;
 
            virtual void drawPath(const Path2D& path) = 0;
 
            virtual void drawText(double x, double y, const std::string& txt) = 0;
 
            /*
             * \brief Enables clipping and establishes a new clip region.
             *
             * The set clip region will affect all drawing operations by effectively masking out any changes to the 
             * drawing surface that are outside of the specified region.
             *
             * \param path The path specifying the shape of the clip region.
             */
            virtual void setClipPath(const Path2D& path) = 0;
 
            virtual void clearClipPath() = 0;
        };
    } // namespace Vis
} // namespace CDPL
 
#endif // CDPL_VIS_RENDERER2D_HPP