The QGeoMapCircleObject class is a QGeoMapObject used to draw the region within a given distance of a coordinate. More...
#include <QGeoMapCircleObject>
Inherits: QGeoMapObject.
This class was introduced in Qt Mobility 1.1.
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QGeoMapCircleObject () | |
QGeoMapCircleObject ( const QGeoBoundingCircle & circle ) | |
QGeoMapCircleObject ( const QGeoCoordinate & center, qreal radius ) | |
~QGeoMapCircleObject () | |
QBrush | brush () const |
QGeoCoordinate | center () const |
QGeoBoundingCircle | circle () const |
QPen | pen () const |
quint32 | pointCount () const |
qreal | radius () const |
void | setBrush ( const QBrush & brush ) |
void | setCenter ( const QGeoCoordinate & center ) |
void | setCircle ( const QGeoBoundingCircle & circle ) |
void | setPen ( const QPen & pen ) |
void | setPointCount ( quint32 pointCount ) |
void | setRadius ( qreal radius ) |
virtual bool | contains ( const QGeoCoordinate & coordinate ) const |
virtual QGeoMapObject::Type | type () const |
void | brushChanged ( const QBrush & brush ) |
void | centerChanged ( const QGeoCoordinate & center ) |
void | penChanged ( const QPen & pen ) |
void | radiusChanged ( qreal radius ) |
The QGeoMapCircleObject class is a QGeoMapObject used to draw the region within a given distance of a coordinate.
The circle is specified by either a valid QGeoBoundingCircle instance or a valid QGeoCoordinate instance and a qreal with value greater than 0.0, which represent the center of the circle and the radius of the circle in metres respectively.
The circle may appear as an ellipse on maps which use the Mercator projection. This is done so that the circle accurately covers all points at a distance of the radius or less from the center.
This property holds the brush that will be used to draw this object.
The brush is used to fill in circle.
The outline around the perimeter of the circle is drawn using the QGeoMapCircleObject::pen property.
This property was introduced in Qt Mobility 1.1.
Access functions:
QBrush | brush () const |
void | setBrush ( const QBrush & brush ) |
Notifier signal:
void | brushChanged ( const QBrush & brush ) |
This property holds the coordinate of the center of the circle to be drawn by this circle object.
The default value of this property is an invalid coordinate. While the value of this property is invalid the circle object will not be displayed.
This property was introduced in Qt Mobility 1.1.
Access functions:
QGeoCoordinate | center () const |
void | setCenter ( const QGeoCoordinate & center ) |
Notifier signal:
void | centerChanged ( const QGeoCoordinate & center ) |
This property holds the pen that will be used to draw this object.
The pen is used to draw an outline around the circle. The circle is filled using the QGeoMapCircleObject::brush property.
The pen will be treated as a cosmetic pen, which means that the width of the pen will be independent of the zoom level of the map.
This property was introduced in Qt Mobility 1.1.
Access functions:
QPen | pen () const |
void | setPen ( const QPen & pen ) |
Notifier signal:
void | penChanged ( const QPen & pen ) |
This property holds the number of vertices used in an approximate polygon.
For a circle using ExactTransform, this property describes the number of sides that should be used to generate a polygonal approximation which is then transformed vertex-by-vertex into screen coordinates.
This property was introduced in Qt Mobility 1.2.
Access functions:
quint32 | pointCount () const |
void | setPointCount ( quint32 pointCount ) |
This property holds the radius in metres of the circle that will be drawn by this circle object.
The default value of this property is -1.0. While the value of this property is not greater than 0 the circle object will not be displayed.
This property was introduced in Qt Mobility 1.1.
Access functions:
qreal | radius () const |
void | setRadius ( qreal radius ) |
Notifier signal:
void | radiusChanged ( qreal radius ) |
Constructs a new circle object.
Constructs a new circle object based on the circle circle.
This function was introduced in Qt Mobility 1.1.
Constructs a new circle object with a center at coordinate center and a radius in meters of radius.
This function was introduced in Qt Mobility 1.1.
Destroys this circle object.
This signal is emitted when the brush used to fill the inside of the circle object has changed.
The new value is brush.
This function was introduced in Qt Mobility 1.1.
This signal is emitted when the center of the circle object has changed.
The new value is center.
This function was introduced in Qt Mobility 1.1.
Returns a QGeoBoundingCircle instance which corresponds to the circle that will be drawn by this object.
This is equivalent to
QGeoMapCircleObject *object; // setup object QGeoBoundingCircle(object->center(), object->radius());
This function was introduced in Qt Mobility 1.1.
See also setCircle().
Reimplemented from QGeoMapObject::contains().
This function was introduced in Qt Mobility 1.2.
This signal is emitted when the pen used to draw the edge of the circle object has changed.
The new value is pen.
This function was introduced in Qt Mobility 1.1.
This signal is emitted when the radius of the circle object has changed.
The new value is radius.
This function was introduced in Qt Mobility 1.1.
Sets the circle that will be drawn by this object to circle.
This is equivalent to
QGeoMapCircleObject *object; // setup object object->setCenter(circle.center()); object->setRadius(circle.radius());
This function was introduced in Qt Mobility 1.1.
See also circle().
Reimplemented from QGeoMapObject::type().
This function was introduced in Qt Mobility 1.1.