void QgsLayoutItemScaleBar::applyDefaultSize( QgsUnitTypes::DistanceUnit units )
{
mSettings.setUnits( units );
if ( mMap )
{
double upperMagnitudeMultiplier = 1.0;
double widthInSelectedUnits = mapWidth();
double initialUnitsPerSegment = widthInSelectedUnits / 10.0; //default scalebar width equals half the map width
mSettings.setUnitsPerSegment( initialUnitsPerSegment );
setUnitLabel( QgsUnitTypes::toAbbreviatedString( units ) );
upperMagnitudeMultiplier = 1;
double segmentWidth = initialUnitsPerSegment / upperMagnitudeMultiplier;
int segmentMagnitude = std::floor( std::log10( segmentWidth ) );
double unitsPerSegment = upperMagnitudeMultiplier * ( std::pow( 10.0, segmentMagnitude ) );
double multiplier = std::floor( ( widthInSelectedUnits / ( unitsPerSegment * 10.0 ) ) / 2.5 ) * 2.5;
if ( multiplier > 0 )
{
unitsPerSegment = unitsPerSegment * multiplier;
}
mSettings.setUnitsPerSegment( unitsPerSegment );
mSettings.setMapUnitsPerScaleBarUnit( upperMagnitudeMultiplier );
mSettings.setNumberOfSegments( 4 );
mSettings.setNumberOfSegmentsLeft( 2 );
}
refreshSegmentMillimeters();
resizeToMinimumWidth();
emit changed();
}
void QgsComposerScaleBar::applyDefaultSize()
{
if ( mComposerMap )
{
setUnits( Meters );
double widthMeter = mapWidth();
int nUnitsPerSegment = widthMeter / 10.0; //default scalebar width equals half the map width
setNumUnitsPerSegment( nUnitsPerSegment );
if ( nUnitsPerSegment > 1000 )
{
setNumUnitsPerSegment(( int )( numUnitsPerSegment() / 1000.0 + 0.5 ) * 1000 );
setUnitLabeling( tr( "km" ) );
setNumMapUnitsPerScaleBarUnit( 1000 );
}
else
{
setUnitLabeling( tr( "m" ) );
}
setNumSegments( 4 );
setNumSegmentsLeft( 2 );
}
refreshSegmentMillimeters();
adjustBoxSize();
emit itemChanged();
}
void QgsLayoutItemScaleBar::setUnits( QgsUnitTypes::DistanceUnit u )
{
mSettings.setUnits( u );
refreshSegmentMillimeters();
refreshItemSize();
emit changed();
}
bool QgsComposerScaleBar::readXML( const QDomElement& itemElem, const QDomDocument& doc )
{
if ( itemElem.isNull() )
{
return false;
}
mHeight = itemElem.attribute( "height", "5.0" ).toDouble();
mLabelBarSpace = itemElem.attribute( "labelBarSpace", "3.0" ).toDouble();
mBoxContentSpace = itemElem.attribute( "boxContentSpace", "1.0" ).toDouble();
mNumSegments = itemElem.attribute( "numSegments", "2" ).toInt();
mNumSegmentsLeft = itemElem.attribute( "numSegmentsLeft", "0" ).toInt();
mNumUnitsPerSegment = itemElem.attribute( "numUnitsPerSegment", "1.0" ).toDouble();
mSegmentMillimeters = itemElem.attribute( "segmentMillimeters", "0.0" ).toDouble();
mNumMapUnitsPerScaleBarUnit = itemElem.attribute( "numMapUnitsPerScaleBarUnit", "1.0" ).toDouble();
mPen.setWidthF( itemElem.attribute( "outlineWidth", "1.0" ).toDouble() );
mUnitLabeling = itemElem.attribute( "unitLabel" );
QString fontString = itemElem.attribute( "font", "" );
if ( !fontString.isEmpty() )
{
mFont.fromString( fontString );
}
//style
delete mStyle;
mStyle = 0;
QString styleString = itemElem.attribute( "style", "" );
setStyle( tr( styleString.toLocal8Bit().data() ) );
//map
int mapId = itemElem.attribute( "mapId", "-1" ).toInt();
if ( mapId >= 0 )
{
const QgsComposerMap* composerMap = mComposition->getComposerMapById( mapId );
mComposerMap = composerMap;
if ( mComposerMap )
{
connect( mComposerMap, SIGNAL( extentChanged() ), this, SLOT( updateSegmentSize() ) );
connect( mComposerMap, SIGNAL( destroyed( QObject* ) ), this, SLOT( invalidateCurrentMap() ) );
}
}
mUnits = ( ScaleBarUnits )itemElem.attribute( "units" ).toInt();
refreshSegmentMillimeters();
//alignment
mAlignment = ( Alignment )( itemElem.attribute( "alignment", "0" ).toInt() );
//restore general composer item properties
QDomNodeList composerItemList = itemElem.elementsByTagName( "ComposerItem" );
if ( composerItemList.size() > 0 )
{
QDomElement composerItemElem = composerItemList.at( 0 ).toElement();
_readXML( composerItemElem, doc );
}
return true;
}
void QgsLayoutItemScaleBar::setMaximumBarWidth( double maxWidth )
{
if ( !mStyle )
{
mSettings.setMaximumBarWidth( maxWidth );
return;
}
mSettings.setMaximumBarWidth( maxWidth );
refreshSegmentMillimeters();
resizeToMinimumWidth();
}
void QgsLayoutItemScaleBar::setSegmentSizeMode( QgsScaleBarSettings::SegmentSizeMode mode )
{
if ( !mStyle )
{
mSettings.setSegmentSizeMode( mode );
return;
}
mSettings.setSegmentSizeMode( mode );
refreshSegmentMillimeters();
resizeToMinimumWidth();
}
void QgsLayoutItemScaleBar::setUnitsPerSegment( double units )
{
if ( !mStyle )
{
mSettings.setUnitsPerSegment( units );
return;
}
mSettings.setUnitsPerSegment( units );
refreshSegmentMillimeters();
resizeToMinimumWidth();
}
void QgsComposerScaleBar::updateSegmentSize()
{
if ( !mStyle )
{
return;
}
double width = mStyle->calculateBoxSize().width();
refreshSegmentMillimeters();
double widthAfter = mStyle->calculateBoxSize().width();
correctXPositionAlignment( width, widthAfter );
update();
emit itemChanged();
}
void QgsComposerScaleBar::setNumUnitsPerSegment( double units )
{
if ( !mStyle )
{
mNumUnitsPerSegment = units;
return;
}
double width = mStyle->calculateBoxSize().width();
mNumUnitsPerSegment = units;
refreshSegmentMillimeters();
double widthAfter = mStyle->calculateBoxSize().width();
correctXPositionAlignment( width, widthAfter );
emit itemChanged();
}
void QgsComposerScaleBar::setMaxBarWidth( double maxWidth )
{
if ( !mStyle )
{
mMaxBarWidth = maxWidth;
return;
}
double width = mStyle->calculateBoxSize().width();
mMaxBarWidth = maxWidth;
refreshSegmentMillimeters();
double widthAfter = mStyle->calculateBoxSize().width();
correctXPositionAlignment( width, widthAfter );
emit itemChanged();
}
void QgsComposerScaleBar::setComposerMap( const QgsComposerMap* map )
{
disconnect( mComposerMap, SIGNAL( extentChanged() ), this, SLOT( updateSegmentSize() ) );
disconnect( mComposerMap, SIGNAL( destroyed( QObject* ) ), this, SLOT( invalidateCurrentMap() ) );
mComposerMap = map;
if ( !map )
{
return;
}
connect( mComposerMap, SIGNAL( extentChanged() ), this, SLOT( updateSegmentSize() ) );
connect( mComposerMap, SIGNAL( destroyed( QObject* ) ), this, SLOT( invalidateCurrentMap() ) );
refreshSegmentMillimeters();
}
void QgsLayoutItemScaleBar::setLinkedMap( QgsLayoutItemMap *map )
{
disconnectCurrentMap();
mMap = map;
if ( !map )
{
return;
}
connect( mMap, &QgsLayoutItemMap::extentChanged, this, &QgsLayoutItemScaleBar::updateScale );
connect( mMap, &QObject::destroyed, this, &QgsLayoutItemScaleBar::disconnectCurrentMap );
refreshSegmentMillimeters();
emit changed();
}
void QgsComposerScaleBar::applyDefaultSize()
{
if ( mComposerMap )
{
//calculate mNumUnitsPerSegment
QgsRectangle composerMapRect = mComposerMap->extent();
double proposedScaleBarLength = composerMapRect.width() / 4;
int powerOf10 = int ( pow( 10.0, int ( log( proposedScaleBarLength ) / log( 10.0 ) ) ) ); // from scalebar plugin
int nPow10 = proposedScaleBarLength / powerOf10;
mNumSegments = 2;
mNumUnitsPerSegment = ( nPow10 / 2 ) * powerOf10;
}
refreshSegmentMillimeters();
adjustBoxSize();
emit itemChanged();
}
void QgsComposerScaleBar::applyDefaultSettings()
{
mNumSegments = 2;
mNumSegmentsLeft = 0;
mNumMapUnitsPerScaleBarUnit = 1.0;
//style
delete mStyle;
mStyle = new QgsSingleBoxScaleBarStyle( this );
mHeight = 5;
mPen = QPen( QColor( 0, 0, 0 ) );
mPen.setWidthF( 1.0 );
mBrush.setColor( QColor( 0, 0, 0 ) );
mBrush.setStyle( Qt::SolidPattern );
mFont.setPointSizeF( 12.0 );
mLabelBarSpace = 3.0;
mBoxContentSpace = 1.0;
if ( mComposerMap )
{
//calculate mNumUnitsPerSegment
QRectF composerItemRect = mComposerMap->rect();
QgsRectangle composerMapRect = mComposerMap->extent();
double proposedScaleBarLength = composerMapRect.width() / 4;
int powerOf10 = int ( pow( 10.0, int ( log( proposedScaleBarLength ) / log( 10.0 ) ) ) ); // from scalebar plugin
int nPow10 = proposedScaleBarLength / powerOf10;
mNumSegments = 2;
mNumUnitsPerSegment = ( nPow10 / 2 ) * powerOf10;
}
refreshSegmentMillimeters();
adjustBoxSize();
}
void QgsComposerScaleBar::applyDefaultSize( QgsComposerScaleBar::ScaleBarUnits u )
{
if ( mComposerMap )
{
setUnits( u );
double upperMagnitudeMultiplier = 1.0;
double widthInSelectedUnits = mapWidth();
double initialUnitsPerSegment = widthInSelectedUnits / 10.0; //default scalebar width equals half the map width
setNumUnitsPerSegment( initialUnitsPerSegment );
switch ( mUnits )
{
case MapUnits:
{
upperMagnitudeMultiplier = 1.0;
setUnitLabeling( tr( "units" ) );
break;
}
case Meters:
{
if ( initialUnitsPerSegment > 1000.0 )
{
upperMagnitudeMultiplier = 1000.0;
setUnitLabeling( tr( "km" ) );
}
else
{
upperMagnitudeMultiplier = 1.0;
setUnitLabeling( tr( "m" ) );
}
break;
}
case Feet:
{
if ( initialUnitsPerSegment > 5419.95 )
{
upperMagnitudeMultiplier = 5419.95;
setUnitLabeling( tr( "miles" ) );
}
else
{
upperMagnitudeMultiplier = 1.0;
setUnitLabeling( tr( "ft" ) );
}
break;
}
case NauticalMiles:
{
upperMagnitudeMultiplier = 1;
setUnitLabeling( tr( "Nm" ) );
break;
}
}
double segmentWidth = initialUnitsPerSegment / upperMagnitudeMultiplier;
int segmentMagnitude = floor( log10( segmentWidth ) );
double unitsPerSegment = upperMagnitudeMultiplier * ( qPow( 10.0, segmentMagnitude ) );
double multiplier = floor(( widthInSelectedUnits / ( unitsPerSegment * 10.0 ) ) / 2.5 ) * 2.5;
if ( multiplier > 0 )
{
unitsPerSegment = unitsPerSegment * multiplier;
}
setNumUnitsPerSegment( unitsPerSegment );
setNumMapUnitsPerScaleBarUnit( upperMagnitudeMultiplier );
setNumSegments( 4 );
setNumSegmentsLeft( 2 );
}
refreshSegmentMillimeters();
adjustBoxSize();
emit itemChanged();
}
void QgsComposerScaleBar::setUnits( ScaleBarUnits u )
{
mUnits = u;
refreshSegmentMillimeters();
emit itemChanged();
}
void QgsComposerScaleBar::setNumUnitsPerSegment( double units )
{
mNumUnitsPerSegment = units;
refreshSegmentMillimeters();
}
void QgsComposerScaleBar::updateSegmentSize()
{
refreshSegmentMillimeters();
update();
}
void QgsLayoutItemScaleBar::updateScale()
{
refreshSegmentMillimeters();
resizeToMinimumWidth();
update();
}
