The QGeoTiledMapReply class manages a tile fetch operation started by an instance of QGeoTiledManagerEngine. More...
#include <QGeoTiledMapReply>Inherits: QObject.
This class was introduced in Qt Mobility 1.1.
| enum | Error { NoError, CommunicationError, ParseError, UnknownError } |
| QGeoTiledMapReply ( const QGeoTiledMapRequest & request, QObject * parent = 0 ) | |
| QGeoTiledMapReply ( Error error, const QString & errorString, QObject * parent = 0 ) | |
| virtual | ~QGeoTiledMapReply () |
| virtual void | abort () |
| Error | error () const |
| QString | errorString () const |
| bool | isCached () const |
| bool | isFinished () const |
| QByteArray | mapImageData () const |
| QString | mapImageFormat () const |
| QGeoTiledMapRequest | request () const |
| void | error ( QGeoTiledMapReply::Error error, const QString & errorString = QString() ) |
| void | finished () |
| void | setCached ( bool cached ) |
| void | setError ( Error error, const QString & errorString ) |
| void | setFinished ( bool finished ) |
| void | setMapImageData ( const QByteArray & data ) |
| void | setMapImageFormat ( const QString & format ) |
The QGeoTiledMapReply class manages a tile fetch operation started by an instance of QGeoTiledManagerEngine.
Instances of QGeoTiledMapReply manage the state and results of these operations.
The isFinished(), error() and errorString() methods provide information on whether the operation has completed and if it completed successfully.
The finished() and error(QGeoTiledMapReply::Error,QString) signals can be used to monitor the progress of the operation.
It is possible that a newly created QGeoTiledMapReply may be in a finished state, most commonly because an error has occurred. Since such an instance will never emit the finished() or error(QGeoTiledMapReply::Error,QString) signals, it is important to check the result of isFinished() before making the connections to the signals.
If the operation completes successfully the results will be able to be accessed with mapImageData() and mapImageFormat().
Describes an error which prevented the completion of the operation.
| Constant | Value | Description |
|---|---|---|
| QGeoTiledMapReply::NoError | 0 | No error has occurred. |
| QGeoTiledMapReply::CommunicationError | 1 | An error occurred while communicating with the service provider. |
| QGeoTiledMapReply::ParseError | 2 | The response from the service provider was in an unrecognizable format. supported by the service provider. |
| QGeoTiledMapReply::UnknownError | 3 | An error occurred which does not fit into any of the other categories. |
Constructs a tiled map reply object based on request, with parent parent.
This function was introduced in Qt Mobility 1.1.
Constructs a tiled map reply object with a given error and errorString and the specified parent.
This function was introduced in Qt Mobility 1.1.
Destroys this tiled map reply object.
Cancels the operation immediately.
This will do nothing if the reply is finished.
This function was introduced in Qt Mobility 1.1.
Returns the error state of this reply.
If the result is QGeoTiledMapReply::NoError then no error has occurred.
This function was introduced in Qt Mobility 1.1.
See also setError().
This signal is emitted when an error has been detected in the processing of this reply. The finished() signal will probably follow.
The error will be described by the error code error. If errorString is not empty it will contain a textual description of the error.
Note: Do no delete this reply object in the slot connected to this signal. Use deleteLater() instead.
This function was introduced in Qt Mobility 1.1.
Returns the textual representation of the error state of this reply.
If no error has occurred this will return an empty string. It is possible that an error occurred which has no associated textual representation, in which case this will also return an empty string.
To determine whether an error has occurred, check to see if QGeoTiledMapReply::error() is equal to QGeoTiledMapReply::NoError.
This function was introduced in Qt Mobility 1.1.
This signal is emitted when this reply has finished processing.
If error() equals QGeoTiledMapReply::NoError then the processing finished successfully.
Note: Do no delete this reply object in the slot connected to this signal. Use deleteLater() instead.
This function was introduced in Qt Mobility 1.1.
See also setFinished().
Returns whether the reply is coming from a cache.
This function was introduced in Qt Mobility 1.1.
Return true if the operation completed successfully or encountered an error which cause the operation to come to a halt.
This function was introduced in Qt Mobility 1.1.
Returns the tile image data.
This function was introduced in Qt Mobility 1.1.
See also setMapImageData().
Returns the format of the tile image.
This function was introduced in Qt Mobility 1.1.
See also setMapImageFormat().
Returns the request which corresponds to this reply.
This function was introduced in Qt Mobility 1.1.
Sets whether the reply is coming from a cache to cached.
This function was introduced in Qt Mobility 1.1.
See also isCached().
Sets the error state of this reply to error and the textual representation of the error to errorString.
This wil also cause error() and finished() signals to be emitted, in that order.
This function was introduced in Qt Mobility 1.1.
See also error().
Sets whether or not this reply has finished to finished.
If finished is true, this will cause the finished() signal to be emitted.
If the operation completed successfully, QGeoTiledMapReply::setMapImageData() and QGeoTiledMapReply::setTiledMapFormat() should be called before this function. If an error occurred, QGeoTiledMapReply::setError() should be used instead.
This function was introduced in Qt Mobility 1.1.
See also finished().
Sets the tile image data to data.
This function was introduced in Qt Mobility 1.1.
See also mapImageData().
Sets the format of the tile image to format.
This function was introduced in Qt Mobility 1.1.
See also mapImageFormat().