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qgslayoutitemmapgrid.cpp
2647 lines (2334 loc) · 99 KB
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qgslayoutitemmapgrid.cpp
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/***************************************************************************
qgslayoutitemmapgrid.cpp
----------------------
begin : October 2017
copyright : (C) 2017 by Marco Hugentobler, Nyall Dawson
email : marco dot hugentobler at sourcepole dot ch
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsmessagelog.h"
#include "qgslayoutitemmapgrid.h"
#include "qgslayoututils.h"
#include "qgsclipper.h"
#include "qgsgeometry.h"
#include "qgslayoutitemmap.h"
#include "qgslayout.h"
#include "qgsmapsettings.h"
#include "qgspathresolver.h"
#include "qgsreadwritecontext.h"
#include "qgsrendercontext.h"
#include "qgssymbollayerutils.h"
#include "qgssymbol.h"
#include "qgscoordinatereferencesystem.h"
#include "qgslogger.h"
#include "qgsfontutils.h"
#include "qgsexpressioncontext.h"
#include "qgsexception.h"
#include "qgssettings.h"
#include "qgscoordinateformatter.h"
#include "qgsstyleentityvisitor.h"
#include "qgstextrenderer.h"
#include "qgslinesymbol.h"
#include "qgsmarkersymbol.h"
#include <QVector2D>
#include <math.h>
#include <QPainter>
#include <QPen>
#define MAX_GRID_LINES 1000 //maximum number of horizontal or vertical grid lines to draw
QgsLayoutItemMapGridStack::QgsLayoutItemMapGridStack( QgsLayoutItemMap *map )
: QgsLayoutItemMapItemStack( map )
{
}
void QgsLayoutItemMapGridStack::addGrid( QgsLayoutItemMapGrid *grid )
{
QgsLayoutItemMapItemStack::addItem( grid );
}
void QgsLayoutItemMapGridStack::removeGrid( const QString &gridId )
{
QgsLayoutItemMapItemStack::removeItem( gridId );
}
void QgsLayoutItemMapGridStack::moveGridUp( const QString &gridId )
{
QgsLayoutItemMapItemStack::moveItemUp( gridId );
}
void QgsLayoutItemMapGridStack::moveGridDown( const QString &gridId )
{
QgsLayoutItemMapItemStack::moveItemDown( gridId );
}
QgsLayoutItemMapGrid *QgsLayoutItemMapGridStack::grid( const QString &gridId ) const
{
QgsLayoutItemMapItem *item = QgsLayoutItemMapItemStack::item( gridId );
return qobject_cast<QgsLayoutItemMapGrid *>( item );
}
QgsLayoutItemMapGrid *QgsLayoutItemMapGridStack::grid( const int index ) const
{
QgsLayoutItemMapItem *item = QgsLayoutItemMapItemStack::item( index );
return qobject_cast<QgsLayoutItemMapGrid *>( item );
}
QList<QgsLayoutItemMapGrid *> QgsLayoutItemMapGridStack::asList() const
{
QList< QgsLayoutItemMapGrid * > list;
for ( QgsLayoutItemMapItem *item : mItems )
{
if ( QgsLayoutItemMapGrid *grid = qobject_cast<QgsLayoutItemMapGrid *>( item ) )
{
list.append( grid );
}
}
return list;
}
QgsLayoutItemMapGrid &QgsLayoutItemMapGridStack::operator[]( int idx )
{
QgsLayoutItemMapItem *item = mItems.at( idx );
QgsLayoutItemMapGrid *grid = qobject_cast<QgsLayoutItemMapGrid *>( item );
return *grid;
}
bool QgsLayoutItemMapGridStack::readXml( const QDomElement &elem, const QDomDocument &doc, const QgsReadWriteContext &context )
{
removeItems();
//read grid stack
const QDomNodeList mapGridNodeList = elem.elementsByTagName( QStringLiteral( "ComposerMapGrid" ) );
for ( int i = 0; i < mapGridNodeList.size(); ++i )
{
const QDomElement mapGridElem = mapGridNodeList.at( i ).toElement();
QgsLayoutItemMapGrid *mapGrid = new QgsLayoutItemMapGrid( mapGridElem.attribute( QStringLiteral( "name" ) ), mMap );
mapGrid->readXml( mapGridElem, doc, context );
mItems.append( mapGrid );
}
return true;
}
double QgsLayoutItemMapGridStack::maxGridExtension() const
{
double top = 0.0;
double right = 0.0;
double bottom = 0.0;
double left = 0.0;
calculateMaxGridExtension( top, right, bottom, left );
return std::max( std::max( std::max( top, right ), bottom ), left );
}
void QgsLayoutItemMapGridStack::calculateMaxGridExtension( double &top, double &right, double &bottom, double &left ) const
{
top = 0.0;
right = 0.0;
bottom = 0.0;
left = 0.0;
for ( QgsLayoutItemMapItem *item : mItems )
{
if ( QgsLayoutItemMapGrid *grid = qobject_cast<QgsLayoutItemMapGrid *>( item ) )
{
double gridTop = 0.0;
double gridRight = 0.0;
double gridBottom = 0.0;
double gridLeft = 0.0;
grid->calculateMaxExtension( gridTop, gridRight, gridBottom, gridLeft );
top = std::max( top, gridTop );
right = std::max( right, gridRight );
bottom = std::max( bottom, gridBottom );
left = std::max( left, gridLeft );
}
}
}
//
// QgsLayoutItemMapGrid
//
QVector2D borderToVector2D( QgsLayoutItemMapGrid::BorderSide border )
{
// returns a border as a vector2D for vector arithmetic
switch ( border )
{
case QgsLayoutItemMapGrid::Left:
return QVector2D( 0, 1 );
case QgsLayoutItemMapGrid::Top:
return QVector2D( -1, 0 );
case QgsLayoutItemMapGrid::Right:
return QVector2D( 0, -1 );
case QgsLayoutItemMapGrid::Bottom:
return QVector2D( 1, 0 );
}
return QVector2D();
}
QVector2D borderToNormal2D( QgsLayoutItemMapGrid::BorderSide border )
{
// returns a border normal (towards center) as a vector2D for vector arithmetic
const QVector2D borderVector = borderToVector2D( border );
return QVector2D( borderVector.y(), -borderVector.x() );
}
QgsLayoutItemMapGrid::QgsLayoutItemMapGrid( const QString &name, QgsLayoutItemMap *map )
: QgsLayoutItemMapItem( name, map )
, mGridFrameSides( QgsLayoutItemMapGrid::FrameLeft | QgsLayoutItemMapGrid::FrameRight |
QgsLayoutItemMapGrid::FrameTop | QgsLayoutItemMapGrid::FrameBottom )
{
//get default layout font from settings
const QgsSettings settings;
const QString defaultFontString = settings.value( QStringLiteral( "LayoutDesigner/defaultFont" ), QVariant(), QgsSettings::Gui ).toString();
if ( !defaultFontString.isEmpty() )
{
QFont font;
font.setFamily( defaultFontString );
mAnnotationFormat.setFont( font );
}
createDefaultGridLineSymbol();
createDefaultGridMarkerSymbol();
connect( mMap, &QgsLayoutItemMap::extentChanged, this, &QgsLayoutItemMapGrid::refreshDataDefinedProperties );
connect( mMap, &QgsLayoutItemMap::mapRotationChanged, this, &QgsLayoutItemMapGrid::refreshDataDefinedProperties );
connect( mMap, &QgsLayoutItemMap::crsChanged, this, [ = ]
{
if ( !mCRS.isValid() )
emit crsChanged();
} );
}
QgsLayoutItemMapGrid::~QgsLayoutItemMapGrid() = default;
void QgsLayoutItemMapGrid::createDefaultGridLineSymbol()
{
QVariantMap properties;
properties.insert( QStringLiteral( "color" ), QStringLiteral( "0,0,0,255" ) );
properties.insert( QStringLiteral( "width" ), QStringLiteral( "0.3" ) );
properties.insert( QStringLiteral( "capstyle" ), QStringLiteral( "flat" ) );
mGridLineSymbol.reset( QgsLineSymbol::createSimple( properties ) );
}
void QgsLayoutItemMapGrid::createDefaultGridMarkerSymbol()
{
QVariantMap properties;
properties.insert( QStringLiteral( "name" ), QStringLiteral( "circle" ) );
properties.insert( QStringLiteral( "size" ), QStringLiteral( "2.0" ) );
properties.insert( QStringLiteral( "color" ), QStringLiteral( "0,0,0,255" ) );
mGridMarkerSymbol.reset( QgsMarkerSymbol::createSimple( properties ) );
}
void QgsLayoutItemMapGrid::setGridLineWidth( const double width )
{
if ( mGridLineSymbol )
{
mGridLineSymbol->setWidth( width );
}
}
void QgsLayoutItemMapGrid::setGridLineColor( const QColor &c )
{
if ( mGridLineSymbol )
{
mGridLineSymbol->setColor( c );
}
}
bool QgsLayoutItemMapGrid::writeXml( QDomElement &elem, QDomDocument &doc, const QgsReadWriteContext &context ) const
{
if ( elem.isNull() )
{
return false;
}
QDomElement mapGridElem = doc.createElement( QStringLiteral( "ComposerMapGrid" ) );
mapGridElem.setAttribute( QStringLiteral( "gridStyle" ), mGridStyle );
mapGridElem.setAttribute( QStringLiteral( "intervalX" ), qgsDoubleToString( mGridIntervalX ) );
mapGridElem.setAttribute( QStringLiteral( "intervalY" ), qgsDoubleToString( mGridIntervalY ) );
mapGridElem.setAttribute( QStringLiteral( "offsetX" ), qgsDoubleToString( mGridOffsetX ) );
mapGridElem.setAttribute( QStringLiteral( "offsetY" ), qgsDoubleToString( mGridOffsetY ) );
mapGridElem.setAttribute( QStringLiteral( "crossLength" ), qgsDoubleToString( mCrossLength ) );
QDomElement lineStyleElem = doc.createElement( QStringLiteral( "lineStyle" ) );
const QDomElement gridLineStyleElem = QgsSymbolLayerUtils::saveSymbol( QString(), mGridLineSymbol.get(), doc, context );
lineStyleElem.appendChild( gridLineStyleElem );
mapGridElem.appendChild( lineStyleElem );
QDomElement markerStyleElem = doc.createElement( QStringLiteral( "markerStyle" ) );
const QDomElement gridMarkerStyleElem = QgsSymbolLayerUtils::saveSymbol( QString(), mGridMarkerSymbol.get(), doc, context );
markerStyleElem.appendChild( gridMarkerStyleElem );
mapGridElem.appendChild( markerStyleElem );
mapGridElem.setAttribute( QStringLiteral( "gridFrameStyle" ), mGridFrameStyle );
mapGridElem.setAttribute( QStringLiteral( "gridFrameSideFlags" ), mGridFrameSides );
mapGridElem.setAttribute( QStringLiteral( "gridFrameWidth" ), qgsDoubleToString( mGridFrameWidth ) );
mapGridElem.setAttribute( QStringLiteral( "gridFrameMargin" ), qgsDoubleToString( mGridFrameMargin ) );
mapGridElem.setAttribute( QStringLiteral( "gridFramePenThickness" ), qgsDoubleToString( mGridFramePenThickness ) );
mapGridElem.setAttribute( QStringLiteral( "gridFramePenColor" ), QgsSymbolLayerUtils::encodeColor( mGridFramePenColor ) );
mapGridElem.setAttribute( QStringLiteral( "frameFillColor1" ), QgsSymbolLayerUtils::encodeColor( mGridFrameFillColor1 ) );
mapGridElem.setAttribute( QStringLiteral( "frameFillColor2" ), QgsSymbolLayerUtils::encodeColor( mGridFrameFillColor2 ) );
mapGridElem.setAttribute( QStringLiteral( "leftFrameDivisions" ), mLeftFrameDivisions );
mapGridElem.setAttribute( QStringLiteral( "rightFrameDivisions" ), mRightFrameDivisions );
mapGridElem.setAttribute( QStringLiteral( "topFrameDivisions" ), mTopFrameDivisions );
mapGridElem.setAttribute( QStringLiteral( "bottomFrameDivisions" ), mBottomFrameDivisions );
mapGridElem.setAttribute( QStringLiteral( "rotatedTicksLengthMode" ), mRotatedTicksLengthMode );
mapGridElem.setAttribute( QStringLiteral( "rotatedTicksEnabled" ), mRotatedTicksEnabled );
mapGridElem.setAttribute( QStringLiteral( "rotatedTicksMinimumAngle" ), QString::number( mRotatedTicksMinimumAngle ) );
mapGridElem.setAttribute( QStringLiteral( "rotatedTicksMarginToCorner" ), QString::number( mRotatedTicksMarginToCorner ) );
mapGridElem.setAttribute( QStringLiteral( "rotatedAnnotationsLengthMode" ), mRotatedAnnotationsLengthMode );
mapGridElem.setAttribute( QStringLiteral( "rotatedAnnotationsEnabled" ), mRotatedAnnotationsEnabled );
mapGridElem.setAttribute( QStringLiteral( "rotatedAnnotationsMinimumAngle" ), QString::number( mRotatedAnnotationsMinimumAngle ) );
mapGridElem.setAttribute( QStringLiteral( "rotatedAnnotationsMarginToCorner" ), QString::number( mRotatedAnnotationsMarginToCorner ) );
if ( mCRS.isValid() )
{
mCRS.writeXml( mapGridElem, doc );
}
mapGridElem.setAttribute( QStringLiteral( "annotationFormat" ), mGridAnnotationFormat );
mapGridElem.setAttribute( QStringLiteral( "showAnnotation" ), mShowGridAnnotation );
mapGridElem.setAttribute( QStringLiteral( "annotationExpression" ), mGridAnnotationExpressionString );
mapGridElem.setAttribute( QStringLiteral( "leftAnnotationDisplay" ), mLeftGridAnnotationDisplay );
mapGridElem.setAttribute( QStringLiteral( "rightAnnotationDisplay" ), mRightGridAnnotationDisplay );
mapGridElem.setAttribute( QStringLiteral( "topAnnotationDisplay" ), mTopGridAnnotationDisplay );
mapGridElem.setAttribute( QStringLiteral( "bottomAnnotationDisplay" ), mBottomGridAnnotationDisplay );
mapGridElem.setAttribute( QStringLiteral( "leftAnnotationPosition" ), mLeftGridAnnotationPosition );
mapGridElem.setAttribute( QStringLiteral( "rightAnnotationPosition" ), mRightGridAnnotationPosition );
mapGridElem.setAttribute( QStringLiteral( "topAnnotationPosition" ), mTopGridAnnotationPosition );
mapGridElem.setAttribute( QStringLiteral( "bottomAnnotationPosition" ), mBottomGridAnnotationPosition );
mapGridElem.setAttribute( QStringLiteral( "leftAnnotationDirection" ), mLeftGridAnnotationDirection );
mapGridElem.setAttribute( QStringLiteral( "rightAnnotationDirection" ), mRightGridAnnotationDirection );
mapGridElem.setAttribute( QStringLiteral( "topAnnotationDirection" ), mTopGridAnnotationDirection );
mapGridElem.setAttribute( QStringLiteral( "bottomAnnotationDirection" ), mBottomGridAnnotationDirection );
mapGridElem.setAttribute( QStringLiteral( "frameAnnotationDistance" ), QString::number( mAnnotationFrameDistance ) );
mapGridElem.appendChild( mAnnotationFormat.writeXml( doc, context ) );
mapGridElem.setAttribute( QStringLiteral( "annotationPrecision" ), mGridAnnotationPrecision );
mapGridElem.setAttribute( QStringLiteral( "unit" ), mGridUnit );
mapGridElem.setAttribute( QStringLiteral( "blendMode" ), mBlendMode );
mapGridElem.setAttribute( QStringLiteral( "minimumIntervalWidth" ), QString::number( mMinimumIntervalWidth ) );
mapGridElem.setAttribute( QStringLiteral( "maximumIntervalWidth" ), QString::number( mMaximumIntervalWidth ) );
const bool ok = QgsLayoutItemMapItem::writeXml( mapGridElem, doc, context );
elem.appendChild( mapGridElem );
return ok;
}
bool QgsLayoutItemMapGrid::readXml( const QDomElement &itemElem, const QDomDocument &doc, const QgsReadWriteContext &context )
{
Q_UNUSED( doc )
if ( itemElem.isNull() )
{
return false;
}
const bool ok = QgsLayoutItemMapItem::readXml( itemElem, doc, context );
//grid
mGridStyle = QgsLayoutItemMapGrid::GridStyle( itemElem.attribute( QStringLiteral( "gridStyle" ), QStringLiteral( "0" ) ).toInt() );
mGridIntervalX = itemElem.attribute( QStringLiteral( "intervalX" ), QStringLiteral( "0" ) ).toDouble();
mGridIntervalY = itemElem.attribute( QStringLiteral( "intervalY" ), QStringLiteral( "0" ) ).toDouble();
mGridOffsetX = itemElem.attribute( QStringLiteral( "offsetX" ), QStringLiteral( "0" ) ).toDouble();
mGridOffsetY = itemElem.attribute( QStringLiteral( "offsetY" ), QStringLiteral( "0" ) ).toDouble();
mCrossLength = itemElem.attribute( QStringLiteral( "crossLength" ), QStringLiteral( "3" ) ).toDouble();
mGridFrameStyle = static_cast< QgsLayoutItemMapGrid::FrameStyle >( itemElem.attribute( QStringLiteral( "gridFrameStyle" ), QStringLiteral( "0" ) ).toInt() );
mGridFrameSides = static_cast< QgsLayoutItemMapGrid::FrameSideFlags >( itemElem.attribute( QStringLiteral( "gridFrameSideFlags" ), QStringLiteral( "15" ) ).toInt() );
mGridFrameWidth = itemElem.attribute( QStringLiteral( "gridFrameWidth" ), QStringLiteral( "2.0" ) ).toDouble();
mGridFrameMargin = itemElem.attribute( QStringLiteral( "gridFrameMargin" ), QStringLiteral( "0.0" ) ).toDouble();
mGridFramePenThickness = itemElem.attribute( QStringLiteral( "gridFramePenThickness" ), QStringLiteral( "0.3" ) ).toDouble();
mGridFramePenColor = QgsSymbolLayerUtils::decodeColor( itemElem.attribute( QStringLiteral( "gridFramePenColor" ), QStringLiteral( "0,0,0" ) ) );
mGridFrameFillColor1 = QgsSymbolLayerUtils::decodeColor( itemElem.attribute( QStringLiteral( "frameFillColor1" ), QStringLiteral( "255,255,255,255" ) ) );
mGridFrameFillColor2 = QgsSymbolLayerUtils::decodeColor( itemElem.attribute( QStringLiteral( "frameFillColor2" ), QStringLiteral( "0,0,0,255" ) ) );
mLeftFrameDivisions = QgsLayoutItemMapGrid::DisplayMode( itemElem.attribute( QStringLiteral( "leftFrameDivisions" ), QStringLiteral( "0" ) ).toInt() );
mRightFrameDivisions = QgsLayoutItemMapGrid::DisplayMode( itemElem.attribute( QStringLiteral( "rightFrameDivisions" ), QStringLiteral( "0" ) ).toInt() );
mTopFrameDivisions = QgsLayoutItemMapGrid::DisplayMode( itemElem.attribute( QStringLiteral( "topFrameDivisions" ), QStringLiteral( "0" ) ).toInt() );
mBottomFrameDivisions = QgsLayoutItemMapGrid::DisplayMode( itemElem.attribute( QStringLiteral( "bottomFrameDivisions" ), QStringLiteral( "0" ) ).toInt() );
mRotatedTicksLengthMode = TickLengthMode( itemElem.attribute( QStringLiteral( "rotatedTicksLengthMode" ), QStringLiteral( "0" ) ).toInt() );
mRotatedTicksEnabled = itemElem.attribute( QStringLiteral( "rotatedTicksEnabled" ), QStringLiteral( "0" ) ) != QLatin1String( "0" );
mRotatedTicksMinimumAngle = itemElem.attribute( QStringLiteral( "rotatedTicksMinimumAngle" ), QStringLiteral( "0" ) ).toDouble();
mRotatedTicksMarginToCorner = itemElem.attribute( QStringLiteral( "rotatedTicksMarginToCorner" ), QStringLiteral( "0" ) ).toDouble();
mRotatedAnnotationsLengthMode = TickLengthMode( itemElem.attribute( QStringLiteral( "rotatedAnnotationsLengthMode" ), QStringLiteral( "0" ) ).toInt() );
mRotatedAnnotationsEnabled = itemElem.attribute( QStringLiteral( "rotatedAnnotationsEnabled" ), QStringLiteral( "0" ) ) != QLatin1String( "0" );
mRotatedAnnotationsMinimumAngle = itemElem.attribute( QStringLiteral( "rotatedAnnotationsMinimumAngle" ), QStringLiteral( "0" ) ).toDouble();
mRotatedAnnotationsMarginToCorner = itemElem.attribute( QStringLiteral( "rotatedAnnotationsMarginToCorner" ), QStringLiteral( "0" ) ).toDouble();
const QDomElement lineStyleElem = itemElem.firstChildElement( QStringLiteral( "lineStyle" ) );
if ( !lineStyleElem.isNull() )
{
const QDomElement symbolElem = lineStyleElem.firstChildElement( QStringLiteral( "symbol" ) );
if ( !symbolElem.isNull() )
{
mGridLineSymbol.reset( QgsSymbolLayerUtils::loadSymbol<QgsLineSymbol>( symbolElem, context ) );
}
}
else
{
//old project file, read penWidth /penColorRed, penColorGreen, penColorBlue
mGridLineSymbol.reset( QgsLineSymbol::createSimple( QVariantMap() ) );
mGridLineSymbol->setWidth( itemElem.attribute( QStringLiteral( "penWidth" ), QStringLiteral( "0" ) ).toDouble() );
mGridLineSymbol->setColor( QColor( itemElem.attribute( QStringLiteral( "penColorRed" ), QStringLiteral( "0" ) ).toInt(),
itemElem.attribute( QStringLiteral( "penColorGreen" ), QStringLiteral( "0" ) ).toInt(),
itemElem.attribute( QStringLiteral( "penColorBlue" ), QStringLiteral( "0" ) ).toInt() ) );
}
const QDomElement markerStyleElem = itemElem.firstChildElement( QStringLiteral( "markerStyle" ) );
if ( !markerStyleElem.isNull() )
{
const QDomElement symbolElem = markerStyleElem.firstChildElement( QStringLiteral( "symbol" ) );
if ( !symbolElem.isNull() )
{
mGridMarkerSymbol.reset( QgsSymbolLayerUtils::loadSymbol<QgsMarkerSymbol>( symbolElem, context ) );
}
}
if ( !mCRS.readXml( itemElem ) )
mCRS = QgsCoordinateReferenceSystem();
mBlendMode = static_cast< QPainter::CompositionMode >( itemElem.attribute( QStringLiteral( "blendMode" ), QStringLiteral( "0" ) ).toUInt() );
//annotation
mShowGridAnnotation = ( itemElem.attribute( QStringLiteral( "showAnnotation" ), QStringLiteral( "0" ) ) != QLatin1String( "0" ) );
mGridAnnotationFormat = QgsLayoutItemMapGrid::AnnotationFormat( itemElem.attribute( QStringLiteral( "annotationFormat" ), QStringLiteral( "0" ) ).toInt() );
mGridAnnotationExpressionString = itemElem.attribute( QStringLiteral( "annotationExpression" ) );
mGridAnnotationExpression.reset();
mLeftGridAnnotationPosition = QgsLayoutItemMapGrid::AnnotationPosition( itemElem.attribute( QStringLiteral( "leftAnnotationPosition" ), QStringLiteral( "0" ) ).toInt() );
mRightGridAnnotationPosition = QgsLayoutItemMapGrid::AnnotationPosition( itemElem.attribute( QStringLiteral( "rightAnnotationPosition" ), QStringLiteral( "0" ) ).toInt() );
mTopGridAnnotationPosition = QgsLayoutItemMapGrid::AnnotationPosition( itemElem.attribute( QStringLiteral( "topAnnotationPosition" ), QStringLiteral( "0" ) ).toInt() );
mBottomGridAnnotationPosition = QgsLayoutItemMapGrid::AnnotationPosition( itemElem.attribute( QStringLiteral( "bottomAnnotationPosition" ), QStringLiteral( "0" ) ).toInt() );
mLeftGridAnnotationDisplay = QgsLayoutItemMapGrid::DisplayMode( itemElem.attribute( QStringLiteral( "leftAnnotationDisplay" ), QStringLiteral( "0" ) ).toInt() );
mRightGridAnnotationDisplay = QgsLayoutItemMapGrid::DisplayMode( itemElem.attribute( QStringLiteral( "rightAnnotationDisplay" ), QStringLiteral( "0" ) ).toInt() );
mTopGridAnnotationDisplay = QgsLayoutItemMapGrid::DisplayMode( itemElem.attribute( QStringLiteral( "topAnnotationDisplay" ), QStringLiteral( "0" ) ).toInt() );
mBottomGridAnnotationDisplay = QgsLayoutItemMapGrid::DisplayMode( itemElem.attribute( QStringLiteral( "bottomAnnotationDisplay" ), QStringLiteral( "0" ) ).toInt() );
mLeftGridAnnotationDirection = QgsLayoutItemMapGrid::AnnotationDirection( itemElem.attribute( QStringLiteral( "leftAnnotationDirection" ), QStringLiteral( "0" ) ).toInt() );
mRightGridAnnotationDirection = QgsLayoutItemMapGrid::AnnotationDirection( itemElem.attribute( QStringLiteral( "rightAnnotationDirection" ), QStringLiteral( "0" ) ).toInt() );
mTopGridAnnotationDirection = QgsLayoutItemMapGrid::AnnotationDirection( itemElem.attribute( QStringLiteral( "topAnnotationDirection" ), QStringLiteral( "0" ) ).toInt() );
mBottomGridAnnotationDirection = QgsLayoutItemMapGrid::AnnotationDirection( itemElem.attribute( QStringLiteral( "bottomAnnotationDirection" ), QStringLiteral( "0" ) ).toInt() );
mAnnotationFrameDistance = itemElem.attribute( QStringLiteral( "frameAnnotationDistance" ), QStringLiteral( "0" ) ).toDouble();
if ( !itemElem.firstChildElement( "text-style" ).isNull() )
{
mAnnotationFormat.readXml( itemElem, context );
}
else
{
QFont font;
if ( !QgsFontUtils::setFromXmlChildNode( font, itemElem, "annotationFontProperties" ) )
{
font.fromString( itemElem.attribute( "annotationFont", QString() ) );
}
mAnnotationFormat.setFont( font );
mAnnotationFormat.setSize( font.pointSizeF() );
mAnnotationFormat.setSizeUnit( QgsUnitTypes::RenderPoints );
mAnnotationFormat.setColor( QgsSymbolLayerUtils::decodeColor( itemElem.attribute( "annotationFontColor", "0,0,0,255" ) ) );
}
mGridAnnotationPrecision = itemElem.attribute( QStringLiteral( "annotationPrecision" ), QStringLiteral( "3" ) ).toInt();
const int gridUnitInt = itemElem.attribute( QStringLiteral( "unit" ), QString::number( MapUnit ) ).toInt();
mGridUnit = ( gridUnitInt <= static_cast< int >( DynamicPageSizeBased ) ) ? static_cast< GridUnit >( gridUnitInt ) : MapUnit;
mMinimumIntervalWidth = itemElem.attribute( QStringLiteral( "minimumIntervalWidth" ), QStringLiteral( "50" ) ).toDouble();
mMaximumIntervalWidth = itemElem.attribute( QStringLiteral( "maximumIntervalWidth" ), QStringLiteral( "100" ) ).toDouble();
refreshDataDefinedProperties();
return ok;
}
void QgsLayoutItemMapGrid::setCrs( const QgsCoordinateReferenceSystem &crs )
{
if ( mCRS == crs )
return;
mCRS = crs;
mTransformDirty = true;
emit crsChanged();
}
bool QgsLayoutItemMapGrid::usesAdvancedEffects() const
{
return mBlendMode != QPainter::CompositionMode_SourceOver;
}
QPolygonF QgsLayoutItemMapGrid::scalePolygon( const QPolygonF &polygon, const double scale ) const
{
const QTransform t = QTransform::fromScale( scale, scale );
return t.map( polygon );
}
void QgsLayoutItemMapGrid::drawGridCrsTransform( QgsRenderContext &context, double dotsPerMM, bool calculateLinesOnly ) const
{
if ( !mMap || !mEvaluatedEnabled )
{
return;
}
//has map extent/scale changed?
const QPolygonF mapPolygon = mMap->transformedMapPolygon();
if ( mapPolygon != mPrevMapPolygon )
{
mTransformDirty = true;
mPrevMapPolygon = mapPolygon;
}
if ( mTransformDirty )
{
calculateCrsTransformLines();
}
//draw lines
if ( !calculateLinesOnly )
{
if ( mGridStyle == QgsLayoutItemMapGrid::Solid )
{
QList< GridLine >::const_iterator gridIt = mGridLines.constBegin();
for ( ; gridIt != mGridLines.constEnd(); ++gridIt )
{
drawGridLine( scalePolygon( gridIt->line, dotsPerMM ), context );
}
}
else if ( mGridStyle == QgsLayoutItemMapGrid::Cross || mGridStyle == QgsLayoutItemMapGrid::Markers )
{
const double maxX = mMap->rect().width();
const double maxY = mMap->rect().height();
QList< QgsPointXY >::const_iterator intersectionIt = mTransformedIntersections.constBegin();
for ( ; intersectionIt != mTransformedIntersections.constEnd(); ++intersectionIt )
{
const double x = intersectionIt->x();
const double y = intersectionIt->y();
if ( mGridStyle == QgsLayoutItemMapGrid::Cross )
{
//ensure that crosses don't overshoot the map item bounds
const QLineF line1 = QLineF( x - mEvaluatedCrossLength, y, x + mEvaluatedCrossLength, y );
line1.p1().rx() = line1.p1().x() < 0 ? 0 : line1.p1().x();
line1.p2().rx() = line1.p2().x() > maxX ? maxX : line1.p2().x();
const QLineF line2 = QLineF( x, y - mEvaluatedCrossLength, x, y + mEvaluatedCrossLength );
line2.p1().ry() = line2.p1().y() < 0 ? 0 : line2.p1().y();
line2.p2().ry() = line2.p2().y() > maxY ? maxY : line2.p2().y();
//draw line using coordinates scaled to dots
drawGridLine( QLineF( line1.p1() * dotsPerMM, line1.p2() * dotsPerMM ), context );
drawGridLine( QLineF( line2.p1() * dotsPerMM, line2.p2() * dotsPerMM ), context );
}
else if ( mGridStyle == QgsLayoutItemMapGrid::Markers )
{
drawGridMarker( QPointF( x, y ) * dotsPerMM, context );
}
}
}
}
}
void QgsLayoutItemMapGrid::calculateCrsTransformLines() const
{
QgsRectangle crsBoundingRect;
QgsCoordinateTransform inverseTr;
if ( crsGridParams( crsBoundingRect, inverseTr ) != 0 )
{
return;
}
// calculate grid lines
mGridLines.clear();
xGridLinesCrsTransform( crsBoundingRect, inverseTr );
yGridLinesCrsTransform( crsBoundingRect, inverseTr );
if ( mGridStyle == QgsLayoutItemMapGrid::Cross || mGridStyle == QgsLayoutItemMapGrid::Markers )
{
//cross or markers style - we also need to calculate intersections of lines
//first convert lines to QgsGeometry
QList< QgsGeometry > xLines;
QList< QgsGeometry > yLines;
QList< GridLine >::const_iterator gridIt = mGridLines.constBegin();
for ( ; gridIt != mGridLines.constEnd(); ++gridIt )
{
QgsPolylineXY line;
for ( int i = 0; i < gridIt->line.size(); ++i )
{
line.append( QgsPointXY( gridIt->line.at( i ).x(), gridIt->line.at( i ).y() ) );
}
if ( gridIt->coordinateType == AnnotationCoordinate::Longitude )
yLines << QgsGeometry::fromPolylineXY( line );
else if ( gridIt->coordinateType == AnnotationCoordinate::Latitude )
xLines << QgsGeometry::fromPolylineXY( line );
}
//now, loop through geometries and calculate intersection points
mTransformedIntersections.clear();
QList< QgsGeometry >::const_iterator yLineIt = yLines.constBegin();
for ( ; yLineIt != yLines.constEnd(); ++yLineIt )
{
QList< QgsGeometry >::const_iterator xLineIt = xLines.constBegin();
for ( ; xLineIt != xLines.constEnd(); ++xLineIt )
{
//look for intersections between lines
const QgsGeometry intersects = ( *yLineIt ).intersection( ( *xLineIt ) );
if ( intersects.isNull() )
continue;
//go through all intersections and draw grid markers/crosses
int i = 0;
QgsPointXY vertex = intersects.vertexAt( i );
while ( !vertex.isEmpty() )
{
mTransformedIntersections << vertex;
i = i + 1;
vertex = intersects.vertexAt( i );
}
}
}
}
mTransformDirty = false;
}
void QgsLayoutItemMapGrid::draw( QPainter *p )
{
if ( !mMap || !mEvaluatedEnabled )
{
return;
}
QPaintDevice *paintDevice = p->device();
if ( !paintDevice )
{
return;
}
p->save();
p->setCompositionMode( mBlendMode );
p->setRenderHint( QPainter::Antialiasing, mMap->layout()->renderContext().flags() & QgsLayoutRenderContext::FlagAntialiasing );
const QRectF thisPaintRect = QRectF( 0, 0, mMap->rect().width(), mMap->rect().height() );
p->setClipRect( thisPaintRect );
if ( thisPaintRect != mPrevPaintRect )
{
//rect has changed, so need to recalculate transform
mTransformDirty = true;
mPrevPaintRect = thisPaintRect;
}
//setup painter scaling to dots so that raster symbology is drawn to scale
const double dotsPerMM = paintDevice->logicalDpiX() / 25.4;
p->scale( 1 / dotsPerMM, 1 / dotsPerMM ); //scale painter from mm to dots
//setup render context
QgsRenderContext context = QgsLayoutUtils::createRenderContextForLayout( mLayout, p );
context.setForceVectorOutput( true );
context.setFlag( QgsRenderContext::ApplyScalingWorkaroundForTextRendering, true );
const QgsExpressionContext expressionContext = createExpressionContext();
context.setExpressionContext( expressionContext );
//is grid in a different crs than map?
switch ( mGridUnit )
{
case MapUnit:
case DynamicPageSizeBased:
if ( mCRS.isValid() && mCRS != mMap->crs() )
{
drawGridCrsTransform( context, dotsPerMM );
break;
}
FALLTHROUGH
case CM:
case MM:
drawGridNoTransform( context, dotsPerMM );
break;
}
p->restore();
p->setClipping( false );
#ifdef Q_OS_MAC
//QPainter::setClipping(false) seems to be broken on OSX (#12747). So we hack around it by
//setting a larger clip rect
p->setClipRect( mMap->mapRectFromScene( mMap->sceneBoundingRect() ).adjusted( -10, -10, 10, 10 ) );
#endif
if ( mGridFrameStyle != QgsLayoutItemMapGrid::NoFrame || mShowGridAnnotation )
updateGridLinesAnnotationsPositions();
if ( mGridFrameStyle != QgsLayoutItemMapGrid::NoFrame )
{
drawGridFrame( p );
}
if ( mShowGridAnnotation )
{
drawCoordinateAnnotations( context, context.expressionContext() );
}
}
void QgsLayoutItemMapGrid::updateGridLinesAnnotationsPositions() const
{
QList< GridLine >::iterator it = mGridLines.begin();
for ( ; it != mGridLines.end(); ++it )
{
it->startAnnotation.border = borderForLineCoord( it->line.first(), it->coordinateType );
it->endAnnotation.border = borderForLineCoord( it->line.last(), it->coordinateType );
it->startAnnotation.position = QVector2D( it->line.first() );
it->endAnnotation.position = QVector2D( it->line.last() );
it->startAnnotation.vector = QVector2D( it->line.at( 1 ) - it->line.first() ).normalized();
it->endAnnotation.vector = QVector2D( it->line.at( it->line.count() - 2 ) - it->line.last() ).normalized();
const QVector2D normS = borderToNormal2D( it->startAnnotation.border );
it->startAnnotation.angle = atan2( it->startAnnotation.vector.x() * normS.y() - it->startAnnotation.vector.y() * normS.x(), it->startAnnotation.vector.x() * normS.x() + it->startAnnotation.vector.y() * normS.y() );
const QVector2D normE = borderToNormal2D( it->endAnnotation.border );
it->endAnnotation.angle = atan2( it->endAnnotation.vector.x() * normE.y() - it->endAnnotation.vector.y() * normE.x(), it->endAnnotation.vector.x() * normE.x() + it->endAnnotation.vector.y() * normE.y() );
}
}
void QgsLayoutItemMapGrid::drawGridNoTransform( QgsRenderContext &context, double dotsPerMM, bool calculateLinesOnly ) const
{
//get line positions
mGridLines.clear();
yGridLines();
xGridLines();
if ( calculateLinesOnly )
return;
QList< GridLine >::const_iterator vIt = mGridLines.constBegin();
QList< GridLine >::const_iterator hIt = mGridLines.constBegin();
//simple approach: draw vertical lines first, then horizontal ones
if ( mGridStyle == QgsLayoutItemMapGrid::Solid )
{
//we need to scale line coordinates to dots, rather than mm, since the painter has already been scaled to dots
//this is done by multiplying each line coordinate by dotsPerMM
QLineF line;
for ( ; vIt != mGridLines.constEnd(); ++vIt )
{
if ( vIt->coordinateType != AnnotationCoordinate::Longitude )
continue;
line = QLineF( vIt->line.first() * dotsPerMM, vIt->line.last() * dotsPerMM );
drawGridLine( line, context );
}
for ( ; hIt != mGridLines.constEnd(); ++hIt )
{
if ( hIt->coordinateType != AnnotationCoordinate::Latitude )
continue;
line = QLineF( hIt->line.first() * dotsPerMM, hIt->line.last() * dotsPerMM );
drawGridLine( line, context );
}
}
else if ( mGridStyle != QgsLayoutItemMapGrid::FrameAnnotationsOnly ) //cross or markers
{
QLineF l1, l2;
QPointF intersectionPoint, crossEnd1, crossEnd2;
for ( ; vIt != mGridLines.constEnd(); ++vIt )
{
if ( vIt->coordinateType != AnnotationCoordinate::Longitude )
continue;
l1 = QLineF( vIt->line.first(), vIt->line.last() );
//test for intersection with every horizontal line
hIt = mGridLines.constBegin();
for ( ; hIt != mGridLines.constEnd(); ++hIt )
{
if ( hIt->coordinateType != AnnotationCoordinate::Latitude )
continue;
l2 = QLineF( hIt->line.first(), hIt->line.last() );
#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
if ( l2.intersect( l1, &intersectionPoint ) == QLineF::BoundedIntersection )
#else
if ( l2.intersects( l1, &intersectionPoint ) == QLineF::BoundedIntersection )
#endif
{
if ( mGridStyle == QgsLayoutItemMapGrid::Cross )
{
//apply a threshold to avoid calculate point if the two points are very close together (can lead to artifacts)
crossEnd1 = ( ( intersectionPoint - l1.p1() ).manhattanLength() > 0.01 ) ?
QgsSymbolLayerUtils::pointOnLineWithDistance( intersectionPoint, l1.p1(), mEvaluatedCrossLength ) : intersectionPoint;
crossEnd2 = ( ( intersectionPoint - l1.p2() ).manhattanLength() > 0.01 ) ?
QgsSymbolLayerUtils::pointOnLineWithDistance( intersectionPoint, l1.p2(), mEvaluatedCrossLength ) : intersectionPoint;
//draw line using coordinates scaled to dots
drawGridLine( QLineF( crossEnd1 * dotsPerMM, crossEnd2 * dotsPerMM ), context );
}
else if ( mGridStyle == QgsLayoutItemMapGrid::Markers )
{
drawGridMarker( intersectionPoint * dotsPerMM, context );
}
}
}
}
if ( mGridStyle == QgsLayoutItemMapGrid::Markers )
{
//markers mode, so we have no need to process horizontal lines (we've already
//drawn markers on the intersections between horizontal and vertical lines)
return;
}
hIt = mGridLines.constBegin();
for ( ; hIt != mGridLines.constEnd(); ++hIt )
{
if ( hIt->coordinateType != AnnotationCoordinate::Latitude )
continue;
l1 = QLineF( hIt->line.first(), hIt->line.last() );
vIt = mGridLines.constBegin();
for ( ; vIt != mGridLines.constEnd(); ++vIt )
{
if ( vIt->coordinateType != AnnotationCoordinate::Longitude )
continue;
l2 = QLineF( vIt->line.first(), vIt->line.last() );
#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
if ( l2.intersect( l1, &intersectionPoint ) == QLineF::BoundedIntersection )
#else
if ( l2.intersects( l1, &intersectionPoint ) == QLineF::BoundedIntersection )
#endif
{
//apply a threshold to avoid calculate point if the two points are very close together (can lead to artifacts)
crossEnd1 = ( ( intersectionPoint - l1.p1() ).manhattanLength() > 0.01 ) ?
QgsSymbolLayerUtils::pointOnLineWithDistance( intersectionPoint, l1.p1(), mEvaluatedCrossLength ) : intersectionPoint;
crossEnd2 = ( ( intersectionPoint - l1.p2() ).manhattanLength() > 0.01 ) ?
QgsSymbolLayerUtils::pointOnLineWithDistance( intersectionPoint, l1.p2(), mEvaluatedCrossLength ) : intersectionPoint;
//draw line using coordinates scaled to dots
drawGridLine( QLineF( crossEnd1 * dotsPerMM, crossEnd2 * dotsPerMM ), context );
}
}
}
}
}
void QgsLayoutItemMapGrid::drawGridFrame( QPainter *p, GridExtension *extension ) const
{
if ( p )
{
p->save();
p->setRenderHint( QPainter::Antialiasing, mMap->layout()->renderContext().flags() & QgsLayoutRenderContext::FlagAntialiasing );
}
switch ( mGridFrameStyle )
{
case QgsLayoutItemMapGrid::Zebra:
case QgsLayoutItemMapGrid::ZebraNautical:
drawGridFrameZebra( p, extension );
break;
case QgsLayoutItemMapGrid::InteriorTicks:
case QgsLayoutItemMapGrid::ExteriorTicks:
case QgsLayoutItemMapGrid::InteriorExteriorTicks:
drawGridFrameTicks( p, extension );
break;
case QgsLayoutItemMapGrid::LineBorder:
case QgsLayoutItemMapGrid::LineBorderNautical:
drawGridFrameLine( p, extension );
break;
case QgsLayoutItemMapGrid::NoFrame:
break;
}
if ( p )
p->restore();
}
void QgsLayoutItemMapGrid::drawGridLine( const QLineF &line, QgsRenderContext &context ) const
{
QPolygonF poly;
poly << line.p1() << line.p2();
drawGridLine( poly, context );
}
void QgsLayoutItemMapGrid::drawGridLine( const QPolygonF &line, QgsRenderContext &context ) const
{
if ( !mMap || !mMap->layout() || !mGridLineSymbol )
{
return;
}
mGridLineSymbol->startRender( context );
mGridLineSymbol->renderPolyline( line, nullptr, context );
mGridLineSymbol->stopRender( context );
}
void QgsLayoutItemMapGrid::drawGridMarker( QPointF point, QgsRenderContext &context ) const
{
if ( !mMap || !mMap->layout() || !mGridMarkerSymbol )
{
return;
}
mGridMarkerSymbol->startRender( context );
mGridMarkerSymbol->renderPoint( point, nullptr, context );
mGridMarkerSymbol->stopRender( context );
}
void QgsLayoutItemMapGrid::drawGridFrameZebra( QPainter *p, GridExtension *extension ) const
{
if ( testFrameSideFlag( QgsLayoutItemMapGrid::FrameLeft ) )
{
drawGridFrameZebraBorder( p, QgsLayoutItemMapGrid::Left, extension ? &extension->left : nullptr );
}
if ( testFrameSideFlag( QgsLayoutItemMapGrid::FrameRight ) )
{
drawGridFrameZebraBorder( p, QgsLayoutItemMapGrid::Right, extension ? &extension->right : nullptr );
}
if ( testFrameSideFlag( QgsLayoutItemMapGrid::FrameTop ) )
{
drawGridFrameZebraBorder( p, QgsLayoutItemMapGrid::Top, extension ? &extension->top : nullptr );
}
if ( testFrameSideFlag( QgsLayoutItemMapGrid::FrameBottom ) )
{
drawGridFrameZebraBorder( p, QgsLayoutItemMapGrid::Bottom, extension ? &extension->bottom : nullptr );
}
}
void QgsLayoutItemMapGrid::drawGridFrameZebraBorder( QPainter *p, BorderSide border, double *extension ) const
{
if ( !mMap )
{
return;
}
if ( extension )
{
*extension = mEvaluatedGridFrameMargin + mEvaluatedGridFrameWidth + mEvaluatedGridFrameLineThickness / 2.0;
return;
}
double currentCoord = 0.0;
bool color1 = false;
double x = 0;
double y = 0;
double width = 0;
double height = 0;
bool drawTLBox = false;
bool drawTRBox = false;
bool drawBLBox = false;
bool drawBRBox = false;
QMap< double, double > pos = QMap< double, double >();
QList< GridLine >::const_iterator it = mGridLines.constBegin();
for ( ; it != mGridLines.constEnd(); ++it )
{
// for first and last point of the line
for ( int i = 0 ; i < 2 ; ++i )
{
const GridLineAnnotation annot = ( i == 0 ) ? it->startAnnotation : it->endAnnotation;
// we skip if the point is on another border
if ( annot.border != border )
continue;
if ( ! shouldShowDivisionForSide( it->coordinateType, annot.border ) )
continue;
if ( border == QgsLayoutItemMapGrid::Left || border == QgsLayoutItemMapGrid::Right )
pos.insert( annot.position.y(), it->coordinate );
else
pos.insert( annot.position.x(), it->coordinate );
}
}
if ( border == QgsLayoutItemMapGrid::Left || border == QgsLayoutItemMapGrid::Right )
{
pos.insert( mMap->rect().height(), mMap->rect().height() );
if ( testFrameSideFlag( QgsLayoutItemMapGrid::FrameBottom ) )
{
drawBLBox = border == QgsLayoutItemMapGrid::Left;
drawBRBox = border == QgsLayoutItemMapGrid::Right;
}
if ( testFrameSideFlag( QgsLayoutItemMapGrid::FrameTop ) )
{
drawTLBox = border == QgsLayoutItemMapGrid::Left;
drawTRBox = border == QgsLayoutItemMapGrid::Right;
}
if ( !drawTLBox && border == QgsLayoutItemMapGrid::Left )
color1 = true;
}
else if ( border == QgsLayoutItemMapGrid::Top || border == QgsLayoutItemMapGrid::Bottom )
{
pos.insert( mMap->rect().width(), mMap->rect().width() );
}
//set pen to current frame pen
QPen framePen = QPen( mGridFramePenColor );
framePen.setWidthF( mEvaluatedGridFrameLineThickness );
framePen.setJoinStyle( Qt::MiterJoin );
p->setPen( framePen );
QMap< double, double >::const_iterator posIt = pos.constBegin();
for ( ; posIt != pos.constEnd(); ++posIt )
{
p->setBrush( QBrush( color1 ? mGridFrameFillColor1 : mGridFrameFillColor2 ) );
if ( border == QgsLayoutItemMapGrid::Left || border == QgsLayoutItemMapGrid::Right )
{
height = posIt.key() - currentCoord;
width = mEvaluatedGridFrameWidth;
x = ( border == QgsLayoutItemMapGrid::Left ) ? -( mEvaluatedGridFrameWidth + mEvaluatedGridFrameMargin ) : mMap->rect().width() + mEvaluatedGridFrameMargin;
y = currentCoord;
}
else //top or bottom
{
height = mEvaluatedGridFrameWidth;
width = posIt.key() - currentCoord;
x = currentCoord;
y = ( border == QgsLayoutItemMapGrid::Top ) ? -( mEvaluatedGridFrameWidth + mEvaluatedGridFrameMargin ) : mMap->rect().height() + mEvaluatedGridFrameMargin;
}
p->drawRect( QRectF( x, y, width, height ) );
currentCoord = posIt.key();
color1 = !color1;
}
if ( mGridFrameStyle == ZebraNautical || qgsDoubleNear( mEvaluatedGridFrameMargin, 0.0 ) )
{
//draw corners
width = height = ( mEvaluatedGridFrameWidth + mEvaluatedGridFrameMargin ) ;