PlotMM::Symbol Class Reference

List of all members.

---

Detailed Description

A class for drawing symbols.

Symbols are used by Curve to draw individual data points. There are various kinds of symbols that can be used like ellipses, rectangles, triangles (with different orientations) and crosses. Additional symbols can be implemented by overloading draw_vfunc_().

See also:

Curve::set_symbol()

Public Member Functions
	Symbol (SymbolStyleID st=SYMBOL_NONE, int size=1, int sizeb=-1)
virtual	~Symbol ()
bool	operator!= (const Symbol &) const
bool	operator== (const Symbol &) const
void	set_size (int a, int b=-1)
void	set_style (SymbolStyleID s)
Glib::RefPtr< Paint >	paint () const
int	size () const
int	size_aux () const
SymbolStyleID	style () const
void	draw (const Glib::RefPtr< Gdk::Drawable > &p, const Gdk::Point &pt) const
void	draw (const Glib::RefPtr< Gdk::Drawable > &p, const Gdk::Rectangle &r) const
void	draw (const Glib::RefPtr< Gdk::Drawable > &p, int x, int y, int w=-1, int h=-1) const
Protected Member Functions
virtual void	draw_vfunc_ (const Glib::RefPtr< Gdk::Drawable > &p, int x, int y, int w, int h) const

---

Constructor & Destructor Documentation

Symbol::Symbol (  SymbolStyleID  style = SYMBOL_NONE, int  size = 1, int  sizeb = -1 )

Constructor. Parameters: style  Symbol Style size  horizontal size sizeb  optional vertical size (defaults to horizontal size)

Symbol::~Symbol (   )  [virtual]

Destructor.

---

Member Function Documentation

void Symbol::draw (  const Glib::RefPtr< Gdk::Drawable > &  p, int  x, int  y, int  w = -1, int  h = -1 )  const

Draw the symbol at the specified position with optionally specified size.

void Symbol::draw (  const Glib::RefPtr< Gdk::Drawable > &  p, const Gdk::Rectangle &  r )  const

Draw the symbol at a point (x,y).

void Symbol::draw (  const Glib::RefPtr< Gdk::Drawable > &  painter, const Gdk::Point &  pos )  const

Draw the symbol at a specified point. Parameters: painter  Painter pos  Center of the symbol

void Symbol::draw_vfunc_ (  const Glib::RefPtr< Gdk::Drawable > &  painter, int  x1, int  y1, int  w, int  h )  const [protected, virtual]

overload this function to provide additional symbol styles To draw the symbol this function makes use of paint() - the pen is used to draw outlines whilst the brush is used to fill the symbol.

bool Symbol::operator!= (  const Symbol &   )  const

!= operator

bool Symbol::operator== (  const Symbol &   )  const

== operator

Glib::RefPtr< Paint > Symbol::paint (   )  const

Return a reference to the Paint the symbol is drawn with

void Symbol::set_size (  int  w, int  h = -1 )

Specify the symbol's size. In most cases, the vertical size is the same as the horizontal size. It is perfectly sufficient to set the horizontal size. size() and size_aux() will return the same value, then. Parameters: w  horizontal size h  optional vertical size (defaults to horizontal size)

void Symbol::set_style (  SymbolStyleID  s  )

Specify the symbol style. The following styles are defined: SYMBOL_NONE No Style. The symbol cannot be drawn. SYMBOL_ELLIPSE Ellipse or circle SYMBOL_RECTANGLE Rectangle SYMBOL_DIAMOND Diamond SYMBOL_TRIANGLE Triangle pointing upwards SYMBOL_D_TRIANGLE Triangle pointing downwards SYMBOL_U_TRIANGLE Triangle pointing upwards SYMBOL_L_TRIANGLE Triangle pointing left SYMBOL_R_TRIANGLE Triangle pointing right SYMBOL_CROSS Cross SYMBOL_XCROSS Diagonal cross Parameters: s  style

int PlotMM::Symbol::size (   )  const

Return Size.

int PlotMM::Symbol::size_aux (   )  const

Return auxiliary size or, if unset, size().

SymbolStyleID PlotMM::Symbol::style (   )  const

Return SymbolStyle.

---