DA Class Reference

The drawing area used to draw vectors. More...

#include <da.h>

List of all members.

Public Member Functions
	DA (NTab &nt, GVectors::VectorStore &vs)
virtual	~DA ()
void	set_line_width (double lw)
double	get_line_width () const
void	set_scale (double s)
void	set_rotation (GVectors::Rotation &r)
double	get_scale () const
GVectors::Rotation	get_rotation () const
void	check_dimension ()
	Gets the minimum and maximum x and y values used to project the vectors on a 2D plane using the vector store function.
Protected Member Functions
bool	on_expose_event (GdkEventExpose *event)
	The expose event.
bool	on_button_press_event (GdkEventButton *be)
	button presse event.
bool	on_button_release_event (GdkEventButton *be)
	button release event.
bool	on_motion_notify_event (GdkEventMotion *em)
	Notifications about mouse motion.
void	prepare_vectors ()
	Prepares the vectors for drawing.
void	prepare_for_drawing ()
	Prepares the object for drawing.
Private Attributes
Glib::RefPtr< Gdk::Window >	window
	The window to drawin in.
GVectors::Coordinates	common_origin
	The origin used for all top level vectors.
Gtk::Allocation	allocation
	Allocation used to get some information about the drawing area.
double	height
	The height of the drawing area.
double	width
	The width of the drawing area.
double	line_width
	The line width of the vectors.
GVectors::VectorStore &	vstore
	Reference to the vector store associated with the NTab class.
double	scale
	The current scale used.
GVectors::Rotation	rotation
	A rotation.
bool	left_mouse_button_pressed
bool	use_mouse_coords_1
	Indicates which coordinates to fill next.
GVectors::Coordinates	mouse_coords_1
	First set of coordinates used to calculate the mouse motion.
GVectors::Coordinates	mouse_coords_2
	Second set of coordinates used to calculate the mouse motion.
NTab &	nt
	Reference to the NTab object holding this DA.

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Detailed Description

The drawing area used to draw vectors.

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Constructor & Destructor Documentation

DA::DA	(	NTab &	n,
		GVectors::VectorStore &	vs
	)

Parameters:

	n	The reference to the parent NTab object.
	vs	The reference to the vector store associated with the parent NTab object.

DA::~DA

(

)

[virtual]

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Member Function Documentation

bool DA::on_expose_event

(

GdkEventExpose *

event

)

[protected]

The expose event.

Used to draw the vectors.

bool DA::on_button_press_event

(

GdkEventButton *

be

)

[protected]

button presse event.

Used for the rotation of vectors using the mouse.

bool DA::on_button_release_event

(

GdkEventButton *

be

)

[protected]

button release event.

Used for the rotation of vectors using the mouse.

bool DA::on_motion_notify_event

(

GdkEventMotion *

em

)

[protected]

Notifications about mouse motion.

Used to rotate the vectors using the mouse.

void DA::prepare_vectors

(

)

[protected]

Prepares the vectors for drawing.

void DA::prepare_for_drawing

(

)

[protected]

Prepares the object for drawing.

void DA::set_line_width

(

double

lw

)

double DA::get_line_width

(

)

const

void DA::set_scale

(

double

s

)

void DA::set_rotation

(

GVectors::Rotation &

r

)

double DA::get_scale

(

)

const

GVectors::Rotation DA::get_rotation

(

)

const

void DA::check_dimension

(

)

Gets the minimum and maximum x and y values used to project the vectors on a 2D plane using the vector store function.

Based on the difference of the min/max retrieved, we decide whether or not we have to enlarge the drawing area.

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Member Data Documentation

Glib::RefPtr<Gdk::Window> DA::window [private]

The window to drawin in.

GVectors::Coordinates DA::common_origin [private]

The origin used for all top level vectors.

Gtk::Allocation DA::allocation [private]

Allocation used to get some information about the drawing area.

double DA::height [private]

The height of the drawing area.

double DA::width [private]

The width of the drawing area.

double DA::line_width [private]

The line width of the vectors.

Warning:

Not used so far.

GVectors::VectorStore& DA::vstore [private]

Reference to the vector store associated with the NTab class.

double DA::scale [private]

The current scale used.

GVectors::Rotation DA::rotation [private]

A rotation.

bool DA::left_mouse_button_pressed [private]

bool DA::use_mouse_coords_1 [private]

Indicates which coordinates to fill next.

If set to true, the first set of coordinates are filled, if set to false, the second set of coordinates are filled.

This is used to compute the mouse motion in order to use the mouse to rotate the vectors.

GVectors::Coordinates DA::mouse_coords_1 [private]

First set of coordinates used to calculate the mouse motion.

GVectors::Coordinates DA::mouse_coords_2 [private]

Second set of coordinates used to calculate the mouse motion.

NTab& DA::nt [private]

Reference to the NTab object holding this DA.

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

• da.h
• da.cc

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