QgsMapCanvasRendererSync::QgsMapCanvasRendererSync( QgsMapCanvas* canvas, QgsMapRenderer* renderer )
: QObject( canvas )
, mCanvas( canvas )
, mRenderer( renderer )
, mSyncingExtent( false )
{
connect( mCanvas, SIGNAL( extentsChanged() ), this, SLOT( onExtentC2R() ) );
connect( mRenderer, SIGNAL( extentsChanged() ), this, SLOT( onExtentR2C() ) );
connect( mCanvas, SIGNAL( mapUnitsChanged() ), this, SLOT( onMapUnitsC2R() ) );
connect( mRenderer, SIGNAL( mapUnitsChanged() ), this, SLOT( onMapUnitsR2C() ) );
connect( mCanvas, SIGNAL( rotationChanged( double ) ), this, SLOT( onMapRotationC2R() ) );
connect( mRenderer, SIGNAL( rotationChanged( double ) ), this, SLOT( onMapRotationR2C() ) );
connect( mCanvas, SIGNAL( hasCrsTransformEnabledChanged( bool ) ), this, SLOT( onCrsTransformC2R() ) );
connect( mRenderer, SIGNAL( hasCrsTransformEnabled( bool ) ), this, SLOT( onCrsTransformR2C() ) );
connect( mCanvas, SIGNAL( destinationCrsChanged() ), this, SLOT( onDestCrsC2R() ) );
connect( mRenderer, SIGNAL( destinationSrsChanged() ), this, SLOT( onDestCrsR2C() ) );
connect( mCanvas, SIGNAL( layersChanged() ), this, SLOT( onLayersC2R() ) );
// TODO: layers R2C ? (should not happen!)
}
QgsDecorationGrid::QgsDecorationGrid( QObject* parent )
: QgsDecorationItem( parent )
{
setName( "Grid" );
mLineSymbol = nullptr;
mMarkerSymbol = nullptr;
projectRead();
connect( QgisApp::instance()->mapCanvas(), SIGNAL( mapUnitsChanged() ),
this, SLOT( checkMapUnitsChanged() ) );
}
void QgsMapCanvas::setMapUnits( QGis::UnitType u )
{
if ( mSettings.mapUnits() == u )
return;
QgsDebugMsg( "Setting map units to " + QString::number( static_cast<int>( u ) ) );
mSettings.setMapUnits( u );
updateScale();
refresh(); // this will force the scale bar to be updated
emit mapUnitsChanged();
}
