gui2::circle_shape Class Reference

Definition of a circle. More...

#include <canvas_private.hpp>

Inheritance diagram for gui2::circle_shape:

Public Member Functions
	circle_shape (const config &cfg)
	Constructor. More...
void	draw (wfl::map_formula_callable &variables) override
	Draws the canvas. More...
Public Member Functions inherited from gui2::canvas::shape
	shape (const config &cfg)
virtual	~shape ()
bool	immutable () const

Private Attributes
typed_formula< unsigned >	x_
	The center x coordinate of the circle. More...
typed_formula< unsigned >	y_
	The center y coordinate of the circle. More...
typed_formula< unsigned >	radius_
	The radius of the circle. More...
typed_formula< color_t >	border_color_
	The border color of the circle. More...
typed_formula< color_t >	fill_color_
	The fill color of the circle. More...
unsigned int	border_thickness_
	The border thickness of the circle. More...

Detailed Description

Definition of a circle.

When drawing a circle it doesn't get blended on the surface but replaces the pixels instead. A blitting flag might be added later if needed.

Keys:

Key	Type	Default	Description
x	f_unsigned	0	The x coordinate of the center.
y	f_unsigned	0	The y coordinate of the center.
radius	f_unsigned	0	The radius of the circle; if 0 nothing is drawn.
color	color	""	The color of the circle.
debug	string	""	Debug message to show upon creation this message is not stored.

Variables: see line_shape

Drawing outside the area will result in unpredictable results including crashing. (That should be fixed, when encountered.)

Definition at line 262 of file canvas_private.hpp.

Constructor & Destructor Documentation

circle_shape()

gui2::circle_shape::circle_shape ( const config &  cfg )

explicit

Constructor.

Parameters

cfg	The config object to define the circle.

Definition at line 210 of file canvas.cpp.

References DBG_GUI_P, and debug.

Member Function Documentation

draw()

void gui2::circle_shape::draw ( wfl::map_formula_callable &  variables )

overridevirtual

Draws the canvas.

Parameters

variables

The canvas can have formulas in it's definition, this parameter contains the values for these formulas.

Todo:

formulas are now recalculated every draw cycle which is a bit silly unless there has been a resize. So to optimize we should use an extra flag or do the calculation in a separate routine.

Implements gui2::canvas::shape.

Definition at line 225 of file canvas.cpp.

References border_color_, border_thickness_, draw::circle(), DBG_GUI_D, draw::disc(), fill_color_, i, color_t::null(), radius_, x_, and y_.

Member Data Documentation

border_color_

typed_formula<color_t> gui2::circle_shape::border_color_

private

The border color of the circle.

Definition at line 282 of file canvas_private.hpp.

Referenced by draw().

border_thickness_

unsigned int gui2::circle_shape::border_thickness_

private

The border thickness of the circle.

Definition at line 288 of file canvas_private.hpp.

Referenced by draw().

fill_color_

typed_formula<color_t> gui2::circle_shape::fill_color_

private

The fill color of the circle.

Definition at line 285 of file canvas_private.hpp.

Referenced by draw().

radius_

typed_formula<unsigned> gui2::circle_shape::radius_

private

The radius of the circle.

Definition at line 279 of file canvas_private.hpp.

Referenced by draw().

x_

typed_formula<unsigned> gui2::circle_shape::x_

private

The center x coordinate of the circle.

Definition at line 275 of file canvas_private.hpp.

Referenced by draw().

y_

typed_formula<unsigned> gui2::circle_shape::y_

private

The center y coordinate of the circle.

Definition at line 276 of file canvas_private.hpp.

Referenced by draw().

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The documentation for this class was generated from the following files:

• gui/core/canvas_private.hpp
• gui/core/canvas.cpp