TextBlockPrimitive2D.hpp

Go to the documentation of this file.

/* 
 * TextBlockPrimitive2D.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_TEXTBLOCKPRIMITIVE2D_HPP
#define CDPL_VIS_TEXTBLOCKPRIMITIVE2D_HPP
 
#include <string>
#include <vector>
#include <cstddef>
#include <memory>
 
#include "CDPL/Vis/GraphicsPrimitive2D.hpp"
#include "CDPL/Vis/Pen.hpp"
#include "CDPL/Vis/Font.hpp"
#include "CDPL/Math/Vector.hpp"
 
 
namespace rapidxml
{
 
    template <typename C> class xml_node;
}
 
 
namespace CDPL
{
 
    namespace Vis
    {
 
        class CDPL_VIS_API TextBlockPrimitive2D : public GraphicsPrimitive2D
        {
 
          public:
            typedef std::shared_ptr<TextBlockPrimitive2D> SharedPointer;
 
            TextBlockPrimitive2D();
 
            void render(Renderer2D& renderer) const;
 
            void setText(const std::string& text);
 
            void clearText();
 
            const std::string& getText() const;
 
            bool hasText() const;
 
            void setPosition(const Math::Vector2D& pos);
 
            void setPosition(double x, double y);
 
            const Math::Vector2D& getPosition() const;
 
            void setPen(const Pen& pen);
 
            const Pen& getPen() const;
 
            void setFont(const Font& font);
 
            const Font& getFont() const;
 
            void setAlignment(unsigned int alignment);
 
            unsigned int getAlignment() const;
            
            void setLineSpacing(double spacing);
 
            double getLineSpacing() const;
 
            void layout(FontMetrics& font_metrics);
 
            GraphicsPrimitive2D::SharedPointer clone() const;
 
            void getBounds(Rectangle2D& bounds, FontMetrics* font_metrics) const;
 
          private:
            struct Style
            {
 
                bool bold{false};
                bool italic{false};
                bool underlined{false};
                bool overlined{false};
                bool strikedOut{false};
                bool subscripted{false};
                bool superscripted{false};
            };
 
            struct TextFragment
            {
 
                TextFragment(std::string& text, const Style& style, const Color& color,
                             bool def_color, std::size_t line):
                    style(style), color(color), defColor(def_color), line(line)
                {
                    this->text.swap(text);
                }
 
                std::string  text;
                Style        style;
                Color        color;
                bool         defColor;
                std::size_t  line;
                double       xPos;
                double       yPos;
            };
 
            typedef rapidxml::xml_node<char>  XMLNode;
            typedef std::vector<Color>        ColorStack;
            typedef std::vector<Style>        StyleStack;
            typedef std::vector<TextFragment> TextFragmentList;
 
            void processText(const std::string& text);
            void processNode(XMLNode* node);
            void getColor(XMLNode* node);
            void applyStyle(Font& font, const Style& style) const;
 
            Pen              pen;
            Font             font;
            Math::Vector2D   position;
            std::string      text;
            unsigned int     alignment;
            double           lineSpacing;
            ColorStack       colorStack;
            StyleStack       styleStack;
            Color            currColor;
            Style            currStyle;
            std::size_t      currLine;
            TextFragmentList textFragments;
        };
    } // namespace Vis
} // namespace CDPL
 
#endif // CDPL_VIS_TEXTBLOCKPRIMITIVE2D_HPP