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<title>Qt Mobility 1.2: QGeoTiledMapData Class Reference</title>
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<a href="index.html" class="qtref"><span>QtMobility Reference Documentation</span></a>
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<li>QGeoTiledMapData</li>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#protected-functions">Protected Functions</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QGeoTiledMapData Class Reference</h1>
<!-- $$$QGeoTiledMapData-brief -->
<p>The QGeoTiledMapData class is a subclass of <a href="qgeomapdata.html">QGeoMapData</a> provided to make working with tile based mapping services more convenient. <a href="#details">More...</a></p>
<!-- @@@QGeoTiledMapData -->
<pre class="cpp"> <span class="preprocessor">#include <QGeoTiledMapData></span></pre><p><b>Inherits: </b><a href="qgeomapdata.html">QGeoMapData</a>.</p>
<p>This class was introduced in Qt Mobility 1.1.</p>
<ul>
<li><a href="qgeotiledmapdata-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#QGeoTiledMapData">QGeoTiledMapData</a></b> ( QGeoMappingManagerEngine * <i>engine</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#dtor.QGeoTiledMapData">~QGeoTiledMapData</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QPoint </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#coordinateToWorldReferencePosition">coordinateToWorldReferencePosition</a></b> ( const QGeoCoordinate & <i>coordinate</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#triggerUpdateMapDisplay">triggerUpdateMapDisplay</a></b> ( const QRectF & <i>target</i> = QRectF() )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QGeoCoordinate </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#worldReferencePositionToCoordinate">worldReferencePositionToCoordinate</a></b> ( const QPoint & <i>pixel</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QSize </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#worldReferenceSize">worldReferenceSize</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QPoint </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#worldReferenceViewportCenter">worldReferenceViewportCenter</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QRect </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#worldReferenceViewportRect">worldReferenceViewportRect</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#zoomFactor">zoomFactor</a></b> () const</td></tr>
</table>
<a name="reimplemented-public-functions"></a>
<h2>Reimplemented Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual QGeoCoordinate </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#center">center</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QPointF </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#coordinateToScreenPosition">coordinateToScreenPosition</a></b> ( const QGeoCoordinate & <i>coordwgs</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#fitInViewport">fitInViewport</a></b> ( const QGeoBoundingBox & <i>bounds</i>, bool <i>preserveViewportCenter</i> = false )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QList<QGeoMapObject *> </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#mapObjectsAtScreenPosition">mapObjectsAtScreenPosition</a></b> ( const QPointF & <i>screenPosition</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QList<QGeoMapObject *> </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#mapObjectsInScreenRect">mapObjectsInScreenRect</a></b> ( const QRectF & <i>screenRect</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#pan">pan</a></b> ( int <i>dx</i>, int <i>dy</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QGeoCoordinate </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#screenPositionToCoordinate">screenPositionToCoordinate</a></b> ( const QPointF & <i>screenPosition</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#setCenter">setCenter</a></b> ( const QGeoCoordinate & <i>center</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#setConnectivityMode">setConnectivityMode</a></b> ( QGraphicsGeoMap::ConnectivityMode <i>connectivityMode</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#setMapType">setMapType</a></b> ( QGraphicsGeoMap::MapType <i>mapType</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#setWindowSize">setWindowSize</a></b> ( const QSizeF & <i>size</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#setZoomLevel">setZoomLevel</a></b> ( qreal <i>zoomLevelf</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QGeoBoundingBox </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#viewport">viewport</a></b> () const</td></tr>
</table>
<ul>
<li class="fn">36 public functions inherited from <a href="qgeomapdata.html#public-functions">QGeoMapData</a></li>
<li class="fn">29 public functions inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#public-functions">QObject</a></li>
</ul>
<a name="reimplemented-protected-functions"></a>
<h2>Reimplemented Protected Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual QGeoMapObjectInfo * </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#createMapObjectInfo">createMapObjectInfo</a></b> ( QGeoMapObject * <i>mapObject</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#paintMap">paintMap</a></b> ( QPainter * <i>painter</i>, const QStyleOptionGraphicsItem * <i>option</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qgeotiledmapdata.html#paintObjects">paintObjects</a></b> ( QPainter * <i>painter</i>, const QStyleOptionGraphicsItem * <i>option</i> )</td></tr>
</table>
<ul>
<li class="fn">7 protected functions inherited from <a href="qgeomapdata.html#protected-functions">QGeoMapData</a></li>
<li class="fn">7 protected functions inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#protected-functions">QObject</a></li>
</ul>
<h3>Additional Inherited Members</h3>
<ul>
<li class="fn">11 properties inherited from <a href="qgeomapdata.html#properties">QGeoMapData</a></li>
<li class="fn">1 property inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#properties">QObject</a></li>
<li class="fn">1 public slot inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#public-slots">QObject</a></li>
<li class="fn">8 signals inherited from <a href="qgeomapdata.html#signals">QGeoMapData</a></li>
<li class="fn">1 signal inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#signals">QObject</a></li>
<li class="fn">1 public variable inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#public-variables">QObject</a></li>
<li class="fn">4 static public members inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#static-public-members">QObject</a></li>
<li class="fn">7 protected functions inherited from <a href="qgeomapdata.html#protected-functions">QGeoMapData</a></li>
<li class="fn">7 protected functions inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#protected-functions">QObject</a></li>
<li class="fn">2 protected variables inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#protected-variables">QObject</a></li>
</ul>
<a name="details"></a>
<!-- $$$QGeoTiledMapData-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QGeoTiledMapData class is a subclass of <a href="qgeomapdata.html">QGeoMapData</a> provided to make working with tile based mapping services more convenient.</p>
<p>This class assumes that at a zoom level of z the world is represented as a 2^z by 2^z grid of tiles, and that the Mercator projection is used to map back and forth between coordinate and positions on the map.</p>
<p>Different projections can be provided by reimplementing <a href="qgeotiledmapdata.html#coordinateToWorldReferencePosition">coordinateToWorldReferencePosition</a>() and <a href="qgeotiledmapdata.html#worldReferencePositionToCoordinate">worldReferencePositionToCoordinate</a>().</p>
<p>Many of the internal calculations deal with positions as though they are pixel positions on the map at the maximum zoom level. Several functions are provided which expose information about the map and the viewport onto the map in these terms for use with custom <a href="qgeomapobjectinfo.html">QGeoMapObjectInfo</a> subclasses.</p>
<p>These functions include <a href="qgeotiledmapdata.html#worldReferenceViewportCenter">worldReferenceViewportCenter</a>(), <a href="qgeotiledmapdata.html#worldReferenceSize">worldReferenceSize</a>() and <a href="qgeotiledmapdata.html#worldReferenceViewportRect">worldReferenceViewportRect</a>().</p>
<p>NOTE: QGeoTiledMapData blocks property change signals from <a href="qgeomapdata.html">QGeoMapData</a> by calling <a href="qgeomapdata.html#setBlockPropertyChangeSignals">QGeoMapData::setBlockPropertyChangeSignals</a>() with true. Changing this in QGeoTiledMapData subclasses will cause the signals being emitted at wrong time.</p>
</div>
<!-- @@@QGeoTiledMapData -->
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QGeoTiledMapData[overload1]$$$QGeoTiledMapDataQGeoMappingManagerEngine* -->
<h3 class="fn"><a name="QGeoTiledMapData"></a>QGeoTiledMapData::<span class="name">QGeoTiledMapData</span> ( <span class="type"><a href="qgeomappingmanagerengine.html">QGeoMappingManagerEngine</a></span> * <i>engine</i> )</h3>
<p>Constructs a new tiled map data object, which makes use of the functionality provided by <i>engine</i>.</p>
<!-- @@@QGeoTiledMapData -->
<!-- $$$~QGeoTiledMapData[overload1]$$$~QGeoTiledMapData -->
<h3 class="fn"><a name="dtor.QGeoTiledMapData"></a>QGeoTiledMapData::<span class="name">~QGeoTiledMapData</span> ()<tt> [virtual]</tt></h3>
<p>Destroys this tiled map data object.</p>
<!-- @@@~QGeoTiledMapData -->
<!-- $$$center[overload1]$$$center -->
<h3 class="fn"><a name="center"></a><span class="type"><a href="qgeocoordinate.html">QGeoCoordinate</a></span> QGeoTiledMapData::<span class="name">center</span> () const<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#center-prop">QGeoMapData::center</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<p><b>See also </b><a href="qgeotiledmapdata.html#setCenter">setCenter</a>().</p>
<!-- @@@center -->
<!-- $$$coordinateToScreenPosition[overload1]$$$coordinateToScreenPositionconstQGeoCoordinate& -->
<h3 class="fn"><a name="coordinateToScreenPosition"></a><span class="type"><a href="http://qt.nokia.com/doc/4.7/qpointf.html">QPointF</a></span> QGeoTiledMapData::<span class="name">coordinateToScreenPosition</span> ( const <span class="type"><a href="qgeocoordinate.html">QGeoCoordinate</a></span> & <i>coordwgs</i> ) const<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#coordinateToScreenPosition">QGeoMapData::coordinateToScreenPosition</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@coordinateToScreenPosition -->
<!-- $$$coordinateToWorldReferencePosition[overload1]$$$coordinateToWorldReferencePositionconstQGeoCoordinate& -->
<h3 class="fn"><a name="coordinateToWorldReferencePosition"></a><span class="type"><a href="http://qt.nokia.com/doc/4.7/qpoint.html">QPoint</a></span> QGeoTiledMapData::<span class="name">coordinateToWorldReferencePosition</span> ( const <span class="type"><a href="qgeocoordinate.html">QGeoCoordinate</a></span> & <i>coordinate</i> ) const<tt> [virtual]</tt></h3>
<p>Converts the coordinate <i>coordinate</i> to a pixel position on the entire map at the maximum zoom level.</p>
<p>The default implementation is based on the Mercator projection.</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@coordinateToWorldReferencePosition -->
<!-- $$$createMapObjectInfo[overload1]$$$createMapObjectInfoQGeoMapObject* -->
<h3 class="fn"><a name="createMapObjectInfo"></a><span class="type"><a href="qgeomapobjectinfo.html">QGeoMapObjectInfo</a></span> * QGeoTiledMapData::<span class="name">createMapObjectInfo</span> ( <span class="type"><a href="qgeomapobject.html">QGeoMapObject</a></span> * <i>mapObject</i> )<tt> [virtual protected]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#createMapObjectInfo">QGeoMapData::createMapObjectInfo</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@createMapObjectInfo -->
<!-- $$$fitInViewport[overload1]$$$fitInViewportconstQGeoBoundingBox&bool -->
<h3 class="fn"><a name="fitInViewport"></a><span class="type">void</span> QGeoTiledMapData::<span class="name">fitInViewport</span> ( const <span class="type"><a href="qgeoboundingbox.html">QGeoBoundingBox</a></span> & <i>bounds</i>, <span class="type">bool</span> <i>preserveViewportCenter</i> = false )<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#fitInViewport">QGeoMapData::fitInViewport</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@fitInViewport -->
<!-- $$$mapObjectsAtScreenPosition[overload1]$$$mapObjectsAtScreenPositionconstQPointF& -->
<h3 class="fn"><a name="mapObjectsAtScreenPosition"></a><span class="type"><a href="http://qt.nokia.com/doc/4.7/qlist.html">QList</a></span><<span class="type"><a href="qgeomapobject.html">QGeoMapObject</a></span> *> QGeoTiledMapData::<span class="name">mapObjectsAtScreenPosition</span> ( const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qpointf.html">QPointF</a></span> & <i>screenPosition</i> ) const<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#mapObjectsAtScreenPosition">QGeoMapData::mapObjectsAtScreenPosition</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@mapObjectsAtScreenPosition -->
<!-- $$$mapObjectsInScreenRect[overload1]$$$mapObjectsInScreenRectconstQRectF& -->
<h3 class="fn"><a name="mapObjectsInScreenRect"></a><span class="type"><a href="http://qt.nokia.com/doc/4.7/qlist.html">QList</a></span><<span class="type"><a href="qgeomapobject.html">QGeoMapObject</a></span> *> QGeoTiledMapData::<span class="name">mapObjectsInScreenRect</span> ( const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qrectf.html">QRectF</a></span> & <i>screenRect</i> ) const<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#mapObjectsInScreenRect">QGeoMapData::mapObjectsInScreenRect</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@mapObjectsInScreenRect -->
<!-- $$$paintMap[overload1]$$$paintMapQPainter*constQStyleOptionGraphicsItem* -->
<h3 class="fn"><a name="paintMap"></a><span class="type">void</span> QGeoTiledMapData::<span class="name">paintMap</span> ( <span class="type"><a href="http://qt.nokia.com/doc/4.7/qpainter.html">QPainter</a></span> * <i>painter</i>, const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qstyleoptiongraphicsitem.html">QStyleOptionGraphicsItem</a></span> * <i>option</i> )<tt> [virtual protected]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#paintMap">QGeoMapData::paintMap</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@paintMap -->
<!-- $$$paintObjects[overload1]$$$paintObjectsQPainter*constQStyleOptionGraphicsItem* -->
<h3 class="fn"><a name="paintObjects"></a><span class="type">void</span> QGeoTiledMapData::<span class="name">paintObjects</span> ( <span class="type"><a href="http://qt.nokia.com/doc/4.7/qpainter.html">QPainter</a></span> * <i>painter</i>, const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qstyleoptiongraphicsitem.html">QStyleOptionGraphicsItem</a></span> * <i>option</i> )<tt> [virtual protected]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#paintObjects">QGeoMapData::paintObjects</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@paintObjects -->
<!-- $$$pan[overload1]$$$panintint -->
<h3 class="fn"><a name="pan"></a><span class="type">void</span> QGeoTiledMapData::<span class="name">pan</span> ( <span class="type">int</span> <i>dx</i>, <span class="type">int</span> <i>dy</i> )<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#pan">QGeoMapData::pan</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@pan -->
<!-- $$$screenPositionToCoordinate[overload1]$$$screenPositionToCoordinateconstQPointF& -->
<h3 class="fn"><a name="screenPositionToCoordinate"></a><span class="type"><a href="qgeocoordinate.html">QGeoCoordinate</a></span> QGeoTiledMapData::<span class="name">screenPositionToCoordinate</span> ( const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qpointf.html">QPointF</a></span> & <i>screenPosition</i> ) const<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#screenPositionToCoordinate">QGeoMapData::screenPositionToCoordinate</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@screenPositionToCoordinate -->
<!-- $$$setCenter[overload1]$$$setCenterconstQGeoCoordinate& -->
<h3 class="fn"><a name="setCenter"></a><span class="type">void</span> QGeoTiledMapData::<span class="name">setCenter</span> ( const <span class="type"><a href="qgeocoordinate.html">QGeoCoordinate</a></span> & <i>center</i> )<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#center-prop">QGeoMapData::setCenter</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<p><b>See also </b><a href="qgeotiledmapdata.html#center">center</a>().</p>
<!-- @@@setCenter -->
<!-- $$$setConnectivityMode[overload1]$$$setConnectivityModeQGraphicsGeoMap::ConnectivityMode -->
<h3 class="fn"><a name="setConnectivityMode"></a><span class="type">void</span> QGeoTiledMapData::<span class="name">setConnectivityMode</span> ( <span class="type"><a href="qgraphicsgeomap.html#ConnectivityMode-enum">QGraphicsGeoMap::ConnectivityMode</a></span> <i>connectivityMode</i> )<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#connectivityMode-prop">QGeoMapData::setConnectivityMode</a>().</p>
<!-- @@@setConnectivityMode -->
<!-- $$$setMapType[overload1]$$$setMapTypeQGraphicsGeoMap::MapType -->
<h3 class="fn"><a name="setMapType"></a><span class="type">void</span> QGeoTiledMapData::<span class="name">setMapType</span> ( <span class="type"><a href="qgraphicsgeomap.html#MapType-enum">QGraphicsGeoMap::MapType</a></span> <i>mapType</i> )<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#mapType-prop">QGeoMapData::setMapType</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@setMapType -->
<!-- $$$setWindowSize[overload1]$$$setWindowSizeconstQSizeF& -->
<h3 class="fn"><a name="setWindowSize"></a><span class="type">void</span> QGeoTiledMapData::<span class="name">setWindowSize</span> ( const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qsizef.html">QSizeF</a></span> & <i>size</i> )<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#windowSize-prop">QGeoMapData::setWindowSize</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@setWindowSize -->
<!-- $$$setZoomLevel[overload1]$$$setZoomLevelqreal -->
<h3 class="fn"><a name="setZoomLevel"></a><span class="type">void</span> QGeoTiledMapData::<span class="name">setZoomLevel</span> ( <span class="type"><a href="http://qt.nokia.com/doc/4.7/qtglobal.html#qreal-typedef">qreal</a></span> <i>zoomLevelf</i> )<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#zoomLevel-prop">QGeoMapData::setZoomLevel</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@setZoomLevel -->
<!-- $$$triggerUpdateMapDisplay[overload1]$$$triggerUpdateMapDisplayconstQRectF& -->
<h3 class="fn"><a name="triggerUpdateMapDisplay"></a><span class="type">void</span> QGeoTiledMapData::<span class="name">triggerUpdateMapDisplay</span> ( const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qrectf.html">QRectF</a></span> & <i>target</i> = QRectF() )</h3>
<p>Forces the map display to update in the region specified by <i>target</i>.</p>
<p>If <i>target</i> is empty the entire map display will be updated.</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@triggerUpdateMapDisplay -->
<!-- $$$viewport[overload1]$$$viewport -->
<h3 class="fn"><a name="viewport"></a><span class="type"><a href="qgeoboundingbox.html">QGeoBoundingBox</a></span> QGeoTiledMapData::<span class="name">viewport</span> () const<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qgeomapdata.html#viewport">QGeoMapData::viewport</a>().</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@viewport -->
<!-- $$$worldReferencePositionToCoordinate[overload1]$$$worldReferencePositionToCoordinateconstQPoint& -->
<h3 class="fn"><a name="worldReferencePositionToCoordinate"></a><span class="type"><a href="qgeocoordinate.html">QGeoCoordinate</a></span> QGeoTiledMapData::<span class="name">worldReferencePositionToCoordinate</span> ( const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qpoint.html">QPoint</a></span> & <i>pixel</i> ) const<tt> [virtual]</tt></h3>
<p>Converts the pixel position <i>pixel</i> on the map to a coordinate.</p>
<p>The pixel position is relative the entire map at the maximum zoom level.</p>
<p>The default implementation is based on the Mercator projection.</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@worldReferencePositionToCoordinate -->
<!-- $$$worldReferenceSize[overload1]$$$worldReferenceSize -->
<h3 class="fn"><a name="worldReferenceSize"></a><span class="type"><a href="http://qt.nokia.com/doc/4.7/qsize.html">QSize</a></span> QGeoTiledMapData::<span class="name">worldReferenceSize</span> () const</h3>
<p>Returns the size, in pixels, of the entire map as a pixmap at the maximum zoom level.</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@worldReferenceSize -->
<!-- $$$worldReferenceViewportCenter[overload1]$$$worldReferenceViewportCenter -->
<h3 class="fn"><a name="worldReferenceViewportCenter"></a><span class="type"><a href="http://qt.nokia.com/doc/4.7/qpoint.html">QPoint</a></span> QGeoTiledMapData::<span class="name">worldReferenceViewportCenter</span> () const</h3>
<p>Returns the center of the viewport, in pixels on the entire map as a pixmap at the maximum zoom level.</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@worldReferenceViewportCenter -->
<!-- $$$worldReferenceViewportRect[overload1]$$$worldReferenceViewportRect -->
<h3 class="fn"><a name="worldReferenceViewportRect"></a><span class="type"><a href="http://qt.nokia.com/doc/4.7/qrect.html">QRect</a></span> QGeoTiledMapData::<span class="name">worldReferenceViewportRect</span> () const</h3>
<p>Returns the visible screen rectangle, in pixels on the entire map as a pixmap at the maximum zoom level.</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@worldReferenceViewportRect -->
<!-- $$$zoomFactor[overload1]$$$zoomFactor -->
<h3 class="fn"><a name="zoomFactor"></a><span class="type">int</span> QGeoTiledMapData::<span class="name">zoomFactor</span> () const</h3>
<p>Returns the ratio between a single pixel on the screen and a pixel on the entire map as a pixmap at the maximum zoom level.</p>
<p>This function was introduced in Qt Mobility 1.1.</p>
<!-- @@@zoomFactor -->
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