Text.hpp

/******************************************************************************
 
  nomlib - C++11 cross-platform game engine
 
Copyright (c) 2013, 2014 Jeffrey Carpenter <i8degrees@gmail.com>
All rights reserved.
 
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
 
1. Redistributions of source code must retain the above copyright notice, this
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2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
 
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******************************************************************************/
#ifndef NOMLIB_GRAPHICS_TEXT_HPP
#define NOMLIB_GRAPHICS_TEXT_HPP
 
#include <iostream>
#include <string>
 
#include "nomlib/config.hpp"
#include "nomlib/graphics/IDrawable.hpp"
#include "nomlib/math/Transformable.hpp"
#include "nomlib/math/Point2.hpp"
#include "nomlib/math/Size2.hpp"
#include "nomlib/graphics/Texture.hpp"
#include "nomlib/graphics/fonts/Font.hpp"
 
namespace nom {
 
class Text: public Transformable
{
  public:
    typedef Text self_type;
    typedef Transformable derived_type;

    enum Style: uint32
    {
      Normal = 0,         
      Bold = 2,
      Italic = 4,
      Underline = 8,
      Strikethrough = 16
    };

    Text( void );

    ~Text( void );

    Text (
            const std::string& text,
            const Font& font,
            uint character_size = nom::DEFAULT_FONT_SIZE,
            const Color4i& text_color = Color4i::White
          );

    Text (
            const std::string& text,
            Font* font,
            uint character_size = nom::DEFAULT_FONT_SIZE,
            const Color4i& text_color = Color4i::White
          );

    Text(const self_type& rhs);

    self_type& operator =(const self_type& rhs);

    virtual void set_position(const Point2i& pos) override;

    Text* clone() const;

    ObjectTypeInfo type() const override;
 
    const Font& font() const;

    Texture* clone_texture() const;

    bool valid ( void ) const;
 
    // enum IFont::FontType font_type( void ) const;

    int text_width(const std::string& text_buffer) const;

    sint text_height ( const std::string& text_string ) const;

    const std::string& text ( void ) const;

    const Color4i& color( void ) const;

    uint32 style( void ) const;

    uint text_size ( void ) const;

    void set_font(const Font& font);

    void set_font(Font* font);

    void set_text( const std::string& text );

    void set_text_size ( uint character_size );

    void set_color( const Color4i& text_color );

    void set_style( uint32 style );

    void set_text_kerning(bool state);

    void draw(RenderTarget& target) const override;
 
  private:
    void render_text(RenderTarget& target) const;

    void update() override;

    int width() const;

    int height() const;
 
    bool update_cache();
 
    int
    multiline_width(const std::string& text_buffer, nom::size_type pos) const;
 
    Font font_;

    mutable Texture glyphs_texture_;

    std::unique_ptr<Texture> rendered_text_;

    std::string text_;
    uint text_size_;
    Color4i color_;

    uint32 style_;

    bool dirty_;
};
 
} // namespace nom
 
#endif // include guard defined