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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< Paintpaint () 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.


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