MapCanvas Class Reference

#include <mapcanvas.h>

Inheritance diagram for MapCanvas:

Public Slots
virtual void	setGeometry (int x, int y, int w, int h)
virtual void	setGeometry (const QRect &r)

Public Member Functions
	MapCanvas (QWidget *parent)
	~MapCanvas ()
void	setLocationDialog (LocationDialog *loc)

Protected Member Functions
virtual void	mousePressEvent (QMouseEvent *e)
virtual void	paintEvent (QPaintEvent *e)

Detailed Description

Used in LocationDialog for displaying a map of the Earth.

In addition, cities in the database are drawn as grey or white dots. Also, the widget processes mouse clicks, to trim the list of cities to those near the mouse click. Widget used in the LocationDialog for displaying the world map.

Author

Jason Harris

Version

1.0

Definition at line 39 of file mapcanvas.h.

Constructor & Destructor Documentation

MapCanvas::MapCanvas ( QWidget *  parent )

explicit

Default constructor.

Initialize the widget: create pixmaps, load the world map image

Parameters

parent

pointer to the parent LocationDialog

Definition at line 32 of file mapcanvas.cpp.

MapCanvas::~MapCanvas

(

)

Destructor (empty)

Definition at line 45 of file mapcanvas.cpp.

Member Function Documentation

void MapCanvas::mousePressEvent ( QMouseEvent *  e )

protectedvirtual

Trim the list of cities so that only those within 2 degrees of the mouse click are shown in the list.

See also

LocationDialog

Definition at line 61 of file mapcanvas.cpp.

void MapCanvas::paintEvent ( QPaintEvent *  e )

protectedvirtual

Draw the map.

Draw grey dots on the locations of all cities, and highlight the cities which match the current filters as white dits. Also draw a red crosshairs on the currently-selected city.

See also

LocationDialog

Definition at line 70 of file mapcanvas.cpp.

void MapCanvas::setGeometry ( int  x, int  y, int  w, int  h  )

virtualslot

Set the geometry of the map widget (overloaded from QWidget).

Resizes the size of the map pixmap to match the widget, and resets the Origin QPoint so it remains at the center of the widget.

Note

this is called automatically by resize events. x the x-position of the widget y the y-position of the widget w the width of the widget h the height of the widget

Definition at line 49 of file mapcanvas.cpp.

void MapCanvas::setGeometry ( const QRect &  r )

virtualslot

Set the geometry of the map widget (overloaded from QWidget).

Resizes the size of the map pixmap to match the widget, and resets the Origin QPoint so it remains at the center of the widget. This function behaves just like the above function. It differs only in the data type of its argument.

Note

this is called automatically by resize events. r QRect describing geometry

Definition at line 55 of file mapcanvas.cpp.

void MapCanvas::setLocationDialog ( LocationDialog *  loc )

inline

Set location dialog.

Definition at line 53 of file mapcanvas.h.

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

• mapcanvas.h
• mapcanvas.cpp