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Scalebar uses preferred units now

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This commit is contained in:
Magnus Homann 2012-08-29 22:56:51 +02:00
parent 0a1270b9fc
commit 3237577ed1
2 changed files with 20 additions and 2 deletions
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21
src/app/qgsdecorationscalebar.cpp
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@ -23,6 +23,7 @@ email : sbr00pwb@users.sourceforge.net
#include "qgsdecorationscalebardialog.h"
#include "qgis.h"
#include "qgisapp.h"
#include "qgslogger.h"
#include "qgsmapcanvas.h"
@ -119,6 +120,7 @@ void QgsDecorationScaleBar::render( QPainter * theQPainter )
//projections) and that just confuses the rest of the code in this
//function, so force to a positive number.
double myMapUnitsPerPixelDouble = qAbs( canvas->mapUnitsPerPixel() );
double myActualSize = mPreferredSize;
// Exit if the canvas width is 0 or layercount is 0 or QGIS will freeze
int myLayerCount = canvas->layerCount();
@ -131,9 +133,25 @@ void QgsDecorationScaleBar::render( QPainter * theQPainter )
// Hard coded sizes
int myMajorTickSize = 8;
int myTextOffsetX = 3;
double myActualSize = mPreferredSize;
int myMargin = 20;
QSettings settings;
QGis::UnitType myPreferredUnits = QGis::fromLiteral( settings.value( "/qgis/measure/displayunits", QGis::toLiteral( QGis::Meters ) ).toString() );
QGis::UnitType myMapUnits = canvas->mapUnits();
// Adjust units meter/feet or vice versa
if ( myMapUnits == QGis::Meters && myPreferredUnits == QGis::Feet )
{
// From meter to feet
myMapUnits = QGis::Feet;
myMapUnitsPerPixelDouble /= 0.3084;
}
else if ( myMapUnits == QGis::Feet && myPreferredUnits == QGis::Meters )
{
// From feet to meter
myMapUnits = QGis::Meters;
myMapUnitsPerPixelDouble *= 0.3084;
}
//Calculate size of scale bar for preferred number of map units
double myScaleBarWidth = mPreferredSize / myMapUnitsPerPixelDouble;
@ -164,7 +182,6 @@ void QgsDecorationScaleBar::render( QPainter * theQPainter )
}
//Get type of map units and set scale bar unit label text
QGis::UnitType myMapUnits = canvas->mapUnits();
QString myScaleBarUnitLabel;
switch ( myMapUnits )
{

1
src/app/qgsdecorationscalebar.h
View File

@ -21,6 +21,7 @@ email : sbr00pwb@users.sourceforge.net
#ifndef QGSCALEBARPLUGIN
#define QGSCALEBARPLUGIN
#include "qgis.h"
#include "qgsdecorationitem.h"
class QPainter;