//
// "$Id: Style.h 4303 2005-05-01 03:33:52Z spitzak $"
//
// Style structure used by Widgets
//
// Copyright 1998-2003 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//

#ifndef fltk_Style_h
#define fltk_Style_h

#include "Color.h"

namespace fltk {

class FL_API Widget;
class FL_API Rectangle;
class FL_API Symbol;
typedef Symbol Box;

extern FL_API Box* const UP_BOX;
extern FL_API Box* const DOWN_BOX;
extern FL_API Box* const THIN_UP_BOX;
extern FL_API Box* const THIN_DOWN_BOX;
extern FL_API Box* const ENGRAVED_BOX;
extern FL_API Box* const EMBOSSED_BOX;
extern FL_API Box* const BORDER_BOX;
extern FL_API Box* const FLAT_BOX;
extern FL_API Box* const HIGHLIGHT_UP_BOX;
extern FL_API Box* const HIGHLIGHT_DOWN_BOX;
extern FL_API Box* const ROUND_UP_BOX;
extern FL_API Box* const ROUND_DOWN_BOX;
extern FL_API Box* const DIAMOND_UP_BOX;
extern FL_API Box* const DIAMOND_DOWN_BOX;
extern FL_API Box* const NO_BOX;
extern FL_API Box* const SHADOW_BOX;
extern FL_API Box* const ROUNDED_BOX;
extern FL_API Box* const RSHADOW_BOX;
extern FL_API Box* const RFLAT_BOX;
extern FL_API Box* const OVAL_BOX;
extern FL_API Box* const OSHADOW_BOX;
extern FL_API Box* const OFLAT_BOX;
extern FL_API Box* const BORDER_FRAME;
extern FL_API Box* const DOTTED_FRAME;
extern FL_API Box* const PLASTIC_UP_BOX;
extern FL_API Box* const PLASTIC_DOWN_BOX;

struct Font;
FL_API Font* font(const char* name, int attrib = 0);
enum {  // values for attributes:
  BOLD = 1,
  ITALIC = 2,
  BOLD_ITALIC = 3
};
extern FL_API Font* const HELVETICA;
extern FL_API Font* const HELVETICA_BOLD;
extern FL_API Font* const HELVETICA_ITALIC;
extern FL_API Font* const HELVETICA_BOLD_ITALIC;
extern FL_API Font* const COURIER;
extern FL_API Font* const COURIER_BOLD;
extern FL_API Font* const COURIER_ITALIC;
extern FL_API Font* const COURIER_BOLD_ITALIC;
extern FL_API Font* const TIMES;
extern FL_API Font* const TIMES_BOLD;
extern FL_API Font* const TIMES_ITALIC;
extern FL_API Font* const TIMES_BOLD_ITALIC;
extern FL_API Font* const SYMBOL_FONT;
extern FL_API Font* const SCREEN_FONT;
extern FL_API Font* const SCREEN_BOLD_FONT;
extern FL_API Font* const ZAPF_DINGBATS;
FL_API Font* font(int);

class LabelType;
extern FL_API LabelType* const NO_LABEL;
extern FL_API LabelType* const NORMAL_LABEL;
extern FL_API LabelType* const SYMBOL_LABEL; // same as NORMAL_LABEL
extern FL_API LabelType* const SHADOW_LABEL;
extern FL_API LabelType* const ENGRAVED_LABEL;
extern FL_API LabelType* const EMBOSSED_LABEL;

class Style;

/*! \addtogroup glyphs
  \{ */
typedef void (*GlyphStyle)(int number, const Rectangle&);
/*! Numbers understood by fltk::Widget::default_glyph(). All other numbers
  draw the same as GLYPH_BOX. The numbers
  0-99 are reserved for per-Widget glyphs, for instance for parts
  of the fltk::Slider or for the checkmark drawn by fltk::CheckButton.
*/
enum GlyphNumber {
  GLYPH_BOX = 100,	//!< Draw an empty buttonbox
  GLYPH_UP,		//!< draw an up arrow
  GLYPH_DOWN,		//!< draw a down arrow
  GLYPH_LEFT,		//!< draw a left arrow
  GLYPH_RIGHT,		//!< draw a right arrow
  GLYPH_UP_BUTTON,	//!< draw an up arrow in a buttonbox
  GLYPH_DOWN_BUTTON,	//!< draw a down arrow in a buttonbox
  GLYPH_LEFT_BUTTON,	//!< draw a left arrow in a buttonbox
  GLYPH_RIGHT_BUTTON	//!< draw a right arrow in a buttonbox
};
/*! \} */

class FL_API Style {
 public:
  // Everything is public for various back-compatability hacks:
  const Style* parent_;
  Box*		box_;
  Box*		buttonbox_;
  Box*		focusbox_;
  GlyphStyle	glyph_;
  Font*		labelfont_;
  Font*		textfont_;
  LabelType*	labeltype_;
  Color		color_;
  Color		textcolor_;
  Color		selection_color_;
  Color		selection_textcolor_;
  Color		buttoncolor_;
  Color		labelcolor_;
  Color		highlight_color_;
  Color		highlight_textcolor_;
  float		labelsize_;
  float		textsize_;
  float		leading_;
  unsigned char	scrollbar_align_;
  unsigned char	scrollbar_width_;
  bool		dynamic_;
  // global settings:
  static bool	hide_underscore_;
  static bool   draw_boxes_inactive_;
  static int	wheel_scroll_lines_;

  // Get functions, which search parents if value is zero:
  Box*		box()		const;
  Box*		buttonbox()	const;
  Box*		focusbox()	const;
  GlyphStyle	glyph()		const;
  Font*		labelfont()	const;
  Font*		textfont()	const;
  LabelType*	labeltype()	const;
  Color		color()		const;
  Color		textcolor()	const;
  Color		selection_color() const;
  Color		selection_textcolor() const;
  Color		buttoncolor()	const;
  Color		labelcolor()	const;
  Color		highlight_color() const;
  Color		highlight_textcolor() const;
  float		labelsize()	const;
  float		textsize()	const;
  float		leading()	const;
  unsigned char	scrollbar_align() const;
  unsigned char	scrollbar_width() const;

  bool		hide_underscore() const {return hide_underscore_;}
  bool		draw_boxes_inactive() const {return draw_boxes_inactive_;}
  int		wheel_scroll_lines() const {return wheel_scroll_lines_;}

  // Set functions:
  void box		(Box* v)	{box_ = v;		}
  void buttonbox	(Box* v)	{buttonbox_ = v;	}
  void focusbox		(Box* v)	{focusbox_ = v;		}
  void glyph		(GlyphStyle v)	{glyph_ = v; 		}
  void labelfont	(Font* v)	{labelfont_ = v;	}
  void textfont		(Font* v)	{textfont_ = v;		}
  void labeltype	(LabelType* v)	{labeltype_ = v; 	}
  void color		(Color v)	{color_ = v; 		}
  void textcolor	(Color v)	{textcolor_ = v; 	}
  void selection_color	(Color v)	{selection_color_ = v;	}
  void selection_textcolor(Color v)	{selection_textcolor_ = v;}
  void buttoncolor	(Color v)	{buttoncolor_ = v; 	}
  void labelcolor	(Color v)	{labelcolor_ = v; 	}
  void highlight_color	(Color v)	{highlight_color_ = v; 	}
  void highlight_textcolor(Color v)	{highlight_textcolor_ = v;}
  void labelsize	(float v)	{labelsize_ = v;	}
  void textsize		(float v)	{textsize_ = v;		}
  void leading		(float v)	{leading_ = v;		}
  void scrollbar_align	(unsigned char v) {scrollbar_align_ = v;}	
  void scrollbar_width	(unsigned char v) {scrollbar_width_ = v;}	

  void hide_underscore	(bool v)	{hide_underscore_ = v;	}
  void draw_boxes_inactive(bool v)	{draw_boxes_inactive_ = v;}
  void wheel_scroll_lines(int v)	{wheel_scroll_lines_ = v;}

  Style();
  bool dynamic() const {return dynamic_;}

  static Style* find(const char* name);
};

struct FL_API NamedStyle : public Style {
  const char* name;
  void  (*revertfunc)(Style*);
  NamedStyle** back_pointer; // used by StyleSet
  static NamedStyle* first;
  NamedStyle* next;
  NamedStyle(const char* name, void (*revert)(Style*), NamedStyle** backptr);
};

/*! \addtogroup themes
  \{ */
extern "C" {typedef bool (*Theme)();}
extern FL_API Theme theme_;
inline Theme theme() {return theme_;}
inline void theme(Theme f) {theme_ = f;}
FL_API void load_theme();
FL_API void reload_theme();
FL_API bool reset_theme();
/*! \} */ // Doxygen bug(?) requires this

}

/*! \addtogroup themes
  \{ */
extern "C" FL_API bool fltk_theme();
/*! \} */


#endif

//
// End of "$Id: Style.h 4303 2005-05-01 03:33:52Z spitzak $".
//