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qgscomposition.cpp
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qgscomposition.cpp
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/***************************************************************************
qgscomposition.cpp
-------------------
begin : January 2005
copyright : (C) 2005 by Radim Blazek
email : blazek@itc.it
***************************************************************************/
/***************************************************************************
* *
* 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 "qgscomposition.h"
#include "qgscomposerutils.h"
#include "qgscomposerarrow.h"
#include "qgscomposerframe.h"
#include "qgscomposerhtml.h"
#include "qgscomposerlabel.h"
#include "qgscomposerlegend.h"
#include "qgscomposermap.h"
#include "qgscomposermapoverview.h"
#include "qgscomposermousehandles.h"
#include "qgscomposeritemgroup.h"
#include "qgscomposerpicture.h"
#include "qgscomposerscalebar.h"
#include "qgscomposershape.h"
#include "qgscomposerlabel.h"
#include "qgscomposermodel.h"
#include "qgscomposerattributetable.h"
#include "qgscomposerattributetablev2.h"
#include "qgsaddremovemultiframecommand.h"
#include "qgscomposermultiframecommand.h"
#include "qgspaintenginehack.h"
#include "qgspaperitem.h"
#include "qgsproject.h"
#include "qgsgeometry.h"
#include "qgsvectorlayer.h"
#include "qgsvectordataprovider.h"
#include "qgsexpression.h"
#include "qgssymbolv2.h"
#include "qgssymbollayerv2utils.h"
#include "qgsdatadefined.h"
#include "qgslogger.h"
#include <QDomDocument>
#include <QDomElement>
#include <QGraphicsRectItem>
#include <QGraphicsView>
#include <QPainter>
#include <QPrinter>
#include <QSettings>
#include <QDir>
#include <limits>
QgsComposition::QgsComposition( QgsMapRenderer* mapRenderer )
: QGraphicsScene( 0 )
, mMapRenderer( mapRenderer )
, mMapSettings( mapRenderer->mapSettings() )
, mAtlasComposition( this )
{
init();
}
QgsComposition::QgsComposition( const QgsMapSettings& mapSettings )
: QGraphicsScene( 0 )
, mMapRenderer( 0 )
, mMapSettings( mapSettings )
, mAtlasComposition( this )
{
init();
}
void QgsComposition::init()
{
// these members should be ideally in constructor's initialization list, but now we have two constructors...
mPlotStyle = QgsComposition::Preview;
mPageWidth = 297;
mPageHeight = 210;
mSpaceBetweenPages = 10;
mPageStyleSymbol = 0;
mPrintAsRaster = false;
mGenerateWorldFile = false;
mWorldFileMap = 0;
mUseAdvancedEffects = true;
mSnapToGrid = false;
mGridVisible = false;
mSnapGridResolution = 0;
mSnapGridOffsetX = 0;
mSnapGridOffsetY = 0;
mAlignmentSnap = true;
mGuidesVisible = true;
mSmartGuides = true;
mSnapTolerance = 0;
mBoundingBoxesVisible = true;
mSelectionHandles = 0;
mActiveItemCommand = 0;
mActiveMultiFrameCommand = 0;
mAtlasMode = QgsComposition::AtlasOff;
mPreventCursorChange = false;
mItemsModel = 0;
mUndoStack = new QUndoStack();
//data defined strings
mDataDefinedNames.insert( QgsComposerObject::PresetPaperSize, QString( "dataDefinedPaperSize" ) );
mDataDefinedNames.insert( QgsComposerObject::PaperWidth, QString( "dataDefinedPaperWidth" ) );
mDataDefinedNames.insert( QgsComposerObject::PaperHeight, QString( "dataDefinedPaperHeight" ) );
mDataDefinedNames.insert( QgsComposerObject::NumPages, QString( "dataDefinedNumPages" ) );
mDataDefinedNames.insert( QgsComposerObject::PaperOrientation, QString( "dataDefinedPaperOrientation" ) );
//connect to atlas toggling on/off and coverage layer and feature changes
//to update data defined values
connect( &mAtlasComposition, SIGNAL( toggled( bool ) ), this, SLOT( refreshDataDefinedProperty() ) );
connect( &mAtlasComposition, SIGNAL( coverageLayerChanged( QgsVectorLayer* ) ), this, SLOT( refreshDataDefinedProperty() ) );
connect( &mAtlasComposition, SIGNAL( featureChanged( QgsFeature* ) ), this, SLOT( refreshDataDefinedProperty() ) );
//also, refreshing composition triggers a recalculation of data defined properties
connect( this, SIGNAL( refreshItemsTriggered() ), this, SLOT( refreshDataDefinedProperty() ) );
//toggling atlas or changing coverage layer requires data defined expressions to be reprepared
connect( &mAtlasComposition, SIGNAL( toggled( bool ) ), this, SLOT( prepareAllDataDefinedExpressions() ) );
connect( &mAtlasComposition, SIGNAL( coverageLayerChanged( QgsVectorLayer* ) ), this, SLOT( prepareAllDataDefinedExpressions() ) );
setBackgroundBrush( QColor( 215, 215, 215 ) );
createDefaultPageStyleSymbol();
addPaperItem();
updateBounds();
//add mouse selection handles to composition, and initially hide
mSelectionHandles = new QgsComposerMouseHandles( this );
addItem( mSelectionHandles );
mSelectionHandles->hide();
mSelectionHandles->setZValue( 500 );
mPrintResolution = 300; //hardcoded default
//load default composition settings
loadDefaults();
loadSettings();
mItemsModel = new QgsComposerModel( this );
}
/*
QgsComposition::QgsComposition()
: QGraphicsScene( 0 ),
mMapRenderer( 0 ),
mPlotStyle( QgsComposition::Preview ),
mPageWidth( 297 ),
mPageHeight( 210 ),
mSpaceBetweenPages( 10 ),
mPageStyleSymbol( 0 ),
mPrintAsRaster( false ),
mGenerateWorldFile( false ),
mWorldFileMap( 0 ),
mUseAdvancedEffects( true ),
mSnapToGrid( false ),
mGridVisible( false ),
mSnapGridResolution( 0 ),
mSnapGridTolerance( 0 ),
mSnapGridOffsetX( 0 ),
mSnapGridOffsetY( 0 ),
mAlignmentSnap( true ),
mGuidesVisible( true ),
mSmartGuides( true ),
mAlignmentSnapTolerance( 0 ),
mSelectionHandles( 0 ),
mActiveItemCommand( 0 ),
mActiveMultiFrameCommand( 0 ),
mAtlasComposition( this ),
mAtlasMode( QgsComposition::AtlasOff ),
mPreventCursorChange( false ),
mItemsModel( 0 )
{
//load default composition settings
loadDefaults();
loadSettings();
mItemsModel = new QgsComposerModel( this );
}*/
QgsComposition::~QgsComposition()
{
removePaperItems();
deleteAndRemoveMultiFrames();
// make sure that all composer items are removed before
// this class is deconstructed - to avoid segfaults
// when composer items access in destructor composition that isn't valid anymore
QList<QGraphicsItem*> itemList = items();
qDeleteAll( itemList );
// clear pointers to QgsDataDefined objects
qDeleteAll( mDataDefinedProperties );
mDataDefinedProperties.clear();
//order is important here - we need to delete model last so that all items have already
//been deleted. Deleting the undo stack will also delete any items which have been
//removed from the scene, so this needs to be done before deleting the model
delete mUndoStack;
delete mActiveItemCommand;
delete mActiveMultiFrameCommand;
delete mPageStyleSymbol;
delete mItemsModel;
}
void QgsComposition::loadDefaults()
{
QSettings settings;
mSnapGridResolution = settings.value( "/Composer/defaultSnapGridResolution", 10.0 ).toDouble();
mSnapGridOffsetX = settings.value( "/Composer/defaultSnapGridOffsetX", 0 ).toDouble();
mSnapGridOffsetY = settings.value( "/Composer/defaultSnapGridOffsetY", 0 ).toDouble();
mSnapTolerance = settings.value( "/Composer/defaultSnapTolerancePixels", 5 ).toInt();
}
void QgsComposition::updateBounds()
{
setSceneRect( compositionBounds() );
}
void QgsComposition::refreshItems()
{
emit refreshItemsTriggered();
//force a redraw on all maps
QList<QgsComposerMap*> maps;
composerItems( maps );
QList<QgsComposerMap*>::iterator mapIt = maps.begin();
for ( ; mapIt != maps.end(); ++mapIt )
{
( *mapIt )->cache();
( *mapIt )->update();
}
}
void QgsComposition::setSelectedItem( QgsComposerItem *item )
{
setAllUnselected();
if ( item )
{
item->setSelected( true );
emit selectedItemChanged( item );
}
}
void QgsComposition::setAllUnselected()
{
//we can't use QGraphicsScene::clearSelection, as that emits no signals
//and we don't know which items are being unselected
//accordingly, we can't inform the composition model of selection changes
//instead, do the clear selection manually...
QList<QGraphicsItem *> selectedItemList = selectedItems();
QList<QGraphicsItem *>::iterator itemIter = selectedItemList.begin();
for ( ; itemIter != selectedItemList.end(); ++itemIter )
{
QgsComposerItem* composerItem = dynamic_cast<QgsComposerItem *>( *itemIter );
if ( composerItem )
{
composerItem->setSelected( false );
}
}
}
void QgsComposition::refreshDataDefinedProperty( const QgsComposerObject::DataDefinedProperty property )
{
//updates data defined properties and redraws composition to match
if ( property == QgsComposerObject::NumPages || property == QgsComposerObject::AllProperties )
{
setNumPages( numPages() );
}
if ( property == QgsComposerObject::PaperWidth || property == QgsComposerObject::PaperHeight ||
property == QgsComposerObject::PaperOrientation || property == QgsComposerObject::PresetPaperSize ||
property == QgsComposerObject::AllProperties )
{
refreshPageSize();
}
}
QRectF QgsComposition::compositionBounds() const
{
//start with an empty rectangle
QRectF bounds = QRectF( 0, 0, 0, 0 );
//add all QgsComposerItems and QgsPaperItems which are in the composition
QList<QGraphicsItem *> itemList = items();
QList<QGraphicsItem *>::iterator itemIt = itemList.begin();
for ( ; itemIt != itemList.end(); ++itemIt )
{
const QgsComposerItem* composerItem = dynamic_cast<const QgsComposerItem *>( *itemIt );
const QgsPaperItem* paperItem = dynamic_cast<const QgsPaperItem*>( *itemIt );
if (( composerItem || paperItem ) )
{
//expand bounds with current item's bounds
bounds = bounds.united(( *itemIt )->sceneBoundingRect() );
}
}
//finally, expand bounds out by 5% page size to give a bit of a margin
bounds.adjust( -mPageWidth * 0.05, -mPageWidth * 0.05, mPageWidth * 0.05, mPageWidth * 0.05 );
return bounds;
}
void QgsComposition::setPaperSize( const double width, const double height )
{
if ( width == mPageWidth && height == mPageHeight )
{
return;
}
//update item positions
QList<QGraphicsItem *> itemList = items();
QList<QGraphicsItem *>::iterator itemIt = itemList.begin();
for ( ; itemIt != itemList.end(); ++itemIt )
{
QgsComposerItem* composerItem = dynamic_cast<QgsComposerItem *>( *itemIt );
if ( composerItem )
{
composerItem->updatePagePos( width, height );
}
}
//update guide positions and size
QList< QGraphicsLineItem* >* guides = snapLines();
QList< QGraphicsLineItem* >::iterator guideIt = guides->begin();
double totalHeight = ( height + spaceBetweenPages() ) * ( numPages() - 1 ) + height;
for ( ; guideIt != guides->end(); ++guideIt )
{
QLineF line = ( *guideIt )->line();
if ( line.dx() == 0 )
{
//vertical line, change height of line
( *guideIt )->setLine( line.x1(), 0, line.x1(), totalHeight );
}
else
{
//horizontal line
//move to new vertical position and change width of line
QPointF curPagePos = positionOnPage( line.p1() );
int curPage = pageNumberForPoint( line.p1() ) - 1;
double newY = curPage * ( height + spaceBetweenPages() ) + curPagePos.y();
( *guideIt )->setLine( 0, newY, width, newY );
}
}
mPageWidth = width;
mPageHeight = height;
double currentY = 0;
for ( int i = 0; i < mPages.size(); ++i )
{
mPages.at( i )->setSceneRect( QRectF( 0, currentY, width, height ) );
currentY += ( height + mSpaceBetweenPages );
}
QgsProject::instance()->dirty( true );
updateBounds();
emit paperSizeChanged();
}
double QgsComposition::paperHeight() const
{
return mPageHeight;
}
double QgsComposition::paperWidth() const
{
return mPageWidth;
}
void QgsComposition::setNumPages( const int pages )
{
int currentPages = numPages();
int desiredPages = pages;
//data defined num pages set?
QVariant exprVal;
if ( dataDefinedEvaluate( QgsComposerObject::NumPages, exprVal, &mDataDefinedProperties ) )
{
bool ok = false;
int pagesD = exprVal.toInt( &ok );
QgsDebugMsg( QString( "exprVal NumPages:%1" ).arg( pagesD ) );
if ( ok )
{
desiredPages = pagesD;
}
}
int diff = desiredPages - currentPages;
if ( diff >= 0 )
{
for ( int i = 0; i < diff; ++i )
{
addPaperItem();
}
}
else
{
diff = -diff;
for ( int i = 0; i < diff; ++i )
{
delete mPages.last();
mPages.removeLast();
}
}
//update vertical guide height
QList< QGraphicsLineItem* >* guides = snapLines();
QList< QGraphicsLineItem* >::iterator guideIt = guides->begin();
double totalHeight = ( mPageHeight + spaceBetweenPages() ) * ( pages - 1 ) + mPageHeight;
for ( ; guideIt != guides->end(); ++guideIt )
{
QLineF line = ( *guideIt )->line();
if ( line.dx() == 0 )
{
//vertical line, change height of line
( *guideIt )->setLine( line.x1(), 0, line.x1(), totalHeight );
}
}
//update the corresponding variable
QgsExpression::setSpecialColumn( "$numpages", QVariant(( int )numPages() ) );
QgsProject::instance()->dirty( true );
updateBounds();
emit nPagesChanged();
}
int QgsComposition::numPages() const
{
return mPages.size();
}
bool QgsComposition::pageIsEmpty( const int page ) const
{
//get all items on page
QList<QgsComposerItem*> items;
//composerItemsOnPage uses 0-based page numbering
composerItemsOnPage( items, page - 1 );
//loop through and check for non-paper items
QList<QgsComposerItem*>::const_iterator itemIt = items.constBegin();
for ( ; itemIt != items.constEnd(); ++itemIt )
{
//is item a paper item?
QgsPaperItem* paper = dynamic_cast<QgsPaperItem*>( *itemIt );
if ( !paper )
{
//item is not a paper item, so we have other items on the page
return false;
}
}
//no non-paper items
return true;
}
bool QgsComposition::shouldExportPage( const int page ) const
{
if ( page > numPages() || page < 1 )
{
//page number out of range
return false;
}
//check all frame items on page
QList<QgsComposerFrame*> frames;
//composerItemsOnPage uses 0 based page numbering
composerItemsOnPage( frames, page - 1 );
QList<QgsComposerFrame*>::const_iterator frameIt = frames.constBegin();
for ( ; frameIt != frames.constEnd(); ++frameIt )
{
if (( *frameIt )->hidePageIfEmpty() && ( *frameIt )->isEmpty() )
{
//frame is set to hide page if empty, and frame is empty, so we don't want to export this page
return false;
}
}
return true;
}
void QgsComposition::setPageStyleSymbol( QgsFillSymbolV2* symbol )
{
delete mPageStyleSymbol;
mPageStyleSymbol = symbol;
QgsProject::instance()->dirty( true );
}
void QgsComposition::createDefaultPageStyleSymbol()
{
delete mPageStyleSymbol;
QgsStringMap properties;
properties.insert( "color", "white" );
properties.insert( "style", "solid" );
properties.insert( "style_border", "no" );
properties.insert( "joinstyle", "miter" );
mPageStyleSymbol = QgsFillSymbolV2::createSimple( properties );
}
QPointF QgsComposition::positionOnPage( const QPointF & position ) const
{
double y;
if ( position.y() > ( mPages.size() - 1 ) * ( paperHeight() + spaceBetweenPages() ) )
{
//y coordinate is greater then the end of the last page, so return distance between
//top of last page and y coordinate
y = position.y() - ( mPages.size() - 1 ) * ( paperHeight() + spaceBetweenPages() );
}
else
{
//y coordinate is less then the end of the last page
y = fmod( position.y(), ( paperHeight() + spaceBetweenPages() ) );
}
return QPointF( position.x(), y );
}
int QgsComposition::pageNumberForPoint( const QPointF & position ) const
{
int pageNumber = qFloor( position.y() / ( paperHeight() + spaceBetweenPages() ) ) + 1;
pageNumber = pageNumber < 1 ? 1 : pageNumber;
pageNumber = pageNumber > mPages.size() ? mPages.size() : pageNumber;
return pageNumber;
}
void QgsComposition::setStatusMessage( const QString & message )
{
emit statusMsgChanged( message );
}
QgsComposerItem* QgsComposition::composerItemAt( const QPointF & position, const bool ignoreLocked ) const
{
return composerItemAt( position, 0, ignoreLocked );
}
QgsComposerItem* QgsComposition::composerItemAt( const QPointF & position, const QgsComposerItem* belowItem, const bool ignoreLocked ) const
{
//get a list of items which intersect the specified position, in descending z order
QList<QGraphicsItem*> itemList;
itemList = items( position, Qt::IntersectsItemShape, Qt::DescendingOrder );
QList<QGraphicsItem *>::iterator itemIt = itemList.begin();
bool foundBelowItem = false;
for ( ; itemIt != itemList.end(); ++itemIt )
{
QgsComposerItem* composerItem = dynamic_cast<QgsComposerItem *>( *itemIt );
QgsPaperItem* paperItem = dynamic_cast<QgsPaperItem*>( *itemIt );
if ( composerItem && !paperItem )
{
// If we are not checking for a an item below a specified item, or if we've
// already found that item, then we've found our target
if (( ! belowItem || foundBelowItem ) && ( !ignoreLocked || !composerItem->positionLock() ) )
{
return composerItem;
}
else
{
if ( composerItem == belowItem )
{
//Target item is next in list
foundBelowItem = true;
}
}
}
}
return 0;
}
int QgsComposition::pageNumberAt( const QPointF& position ) const
{
return position.y() / ( paperHeight() + spaceBetweenPages() );
}
int QgsComposition::itemPageNumber( const QgsComposerItem* item ) const
{
return pageNumberAt( QPointF( item->pos().x(), item->pos().y() ) );
}
QList<QgsComposerItem*> QgsComposition::selectedComposerItems( const bool includeLockedItems )
{
QList<QgsComposerItem*> composerItemList;
QList<QGraphicsItem *> graphicsItemList = selectedItems();
QList<QGraphicsItem *>::iterator itemIter = graphicsItemList.begin();
for ( ; itemIter != graphicsItemList.end(); ++itemIter )
{
QgsComposerItem* composerItem = dynamic_cast<QgsComposerItem *>( *itemIter );
if ( composerItem && ( includeLockedItems || !composerItem->positionLock() ) )
{
composerItemList.push_back( composerItem );
}
}
return composerItemList;
}
QList<const QgsComposerMap*> QgsComposition::composerMapItems() const
{
QList<const QgsComposerMap*> resultList;
QList<QGraphicsItem *> itemList = items();
QList<QGraphicsItem *>::iterator itemIt = itemList.begin();
for ( ; itemIt != itemList.end(); ++itemIt )
{
const QgsComposerMap* composerMap = dynamic_cast<const QgsComposerMap *>( *itemIt );
if ( composerMap )
{
resultList.push_back( composerMap );
}
}
return resultList;
}
const QgsComposerMap* QgsComposition::getComposerMapById( const int id ) const
{
QList<QGraphicsItem *> itemList = items();
QList<QGraphicsItem *>::iterator itemIt = itemList.begin();
for ( ; itemIt != itemList.end(); ++itemIt )
{
const QgsComposerMap* composerMap = dynamic_cast<const QgsComposerMap *>( *itemIt );
if ( composerMap )
{
if ( composerMap->id() == id )
{
return composerMap;
}
}
}
return 0;
}
const QgsComposerHtml* QgsComposition::getComposerHtmlByItem( QgsComposerItem *item ) const
{
// an html item will be a composer frame and if it is we can try to get
// its multiframe parent and then try to cast that to a composer html
const QgsComposerFrame* composerFrame =
dynamic_cast<const QgsComposerFrame *>( item );
if ( composerFrame )
{
const QgsComposerMultiFrame * mypMultiFrame = composerFrame->multiFrame();
const QgsComposerHtml* composerHtml =
dynamic_cast<const QgsComposerHtml *>( mypMultiFrame );
if ( composerHtml )
{
return composerHtml;
}
}
return 0;
}
const QgsComposerItem* QgsComposition::getComposerItemById( const QString theId ) const
{
QList<QGraphicsItem *> itemList = items();
QList<QGraphicsItem *>::iterator itemIt = itemList.begin();
for ( ; itemIt != itemList.end(); ++itemIt )
{
const QgsComposerItem* mypItem = dynamic_cast<const QgsComposerItem *>( *itemIt );
if ( mypItem )
{
if ( mypItem->id() == theId )
{
return mypItem;
}
}
}
return 0;
}
#if 0
const QgsComposerItem* QgsComposition::getComposerItemByUuid( QString theUuid, bool inAllComposers ) const
{
//This does not work since it seems impossible to get the QgisApp::instance() from here... Is there a workaround ?
QSet<QgsComposer*> composers = QSet<QgsComposer*>();
if ( inAllComposers )
{
composers = QgisApp::instance()->printComposers();
}
else
{
composers.insert( this )
}
QSet<QgsComposer*>::const_iterator it = composers.constBegin();
for ( ; it != composers.constEnd(); ++it )
{
QList<QGraphicsItem *> itemList = ( *it )->items();
QList<QGraphicsItem *>::iterator itemIt = itemList.begin();
for ( ; itemIt != itemList.end(); ++itemIt )
{
const QgsComposerItem* mypItem = dynamic_cast<const QgsComposerItem *>( *itemIt );
if ( mypItem )
{
if ( mypItem->uuid() == theUuid )
{
return mypItem;
}
}
}
}
return 0;
}
#endif
const QgsComposerItem* QgsComposition::getComposerItemByUuid( const QString theUuid ) const
{
QList<QGraphicsItem *> itemList = items();
QList<QGraphicsItem *>::iterator itemIt = itemList.begin();
for ( ; itemIt != itemList.end(); ++itemIt )
{
const QgsComposerItem* mypItem = dynamic_cast<const QgsComposerItem *>( *itemIt );
if ( mypItem )
{
if ( mypItem->uuid() == theUuid )
{
return mypItem;
}
}
}
return 0;
}
void QgsComposition::setPrintResolution( const int dpi )
{
mPrintResolution = dpi;
emit printResolutionChanged();
QgsProject::instance()->dirty( true );
}
void QgsComposition::setUseAdvancedEffects( const bool effectsEnabled )
{
mUseAdvancedEffects = effectsEnabled;
//toggle effects for all composer items
QList<QGraphicsItem*> itemList = items();
QList<QGraphicsItem*>::const_iterator itemIt = itemList.constBegin();
for ( ; itemIt != itemList.constEnd(); ++itemIt )
{
QgsComposerItem* composerItem = dynamic_cast<QgsComposerItem*>( *itemIt );
if ( composerItem )
{
composerItem->setEffectsEnabled( effectsEnabled );
}
}
}
int QgsComposition::pixelFontSize( double pointSize ) const
{
return qRound( QgsComposerUtils::pointsToMM( pointSize ) ); //round to nearest mm
}
double QgsComposition::pointFontSize( int pixelSize ) const
{
return QgsComposerUtils::mmToPoints( pixelSize );
}
bool QgsComposition::writeXML( QDomElement& composerElem, QDomDocument& doc )
{
if ( composerElem.isNull() )
{
return false;
}
QDomElement compositionElem = doc.createElement( "Composition" );
compositionElem.setAttribute( "paperWidth", QString::number( mPageWidth ) );
compositionElem.setAttribute( "paperHeight", QString::number( mPageHeight ) );
compositionElem.setAttribute( "numPages", mPages.size() );
QDomElement pageStyleElem = QgsSymbolLayerV2Utils::saveSymbol( QString(), mPageStyleSymbol, doc );
compositionElem.appendChild( pageStyleElem );
//snapping
if ( mSnapToGrid )
{
compositionElem.setAttribute( "snapping", "1" );
}
else
{
compositionElem.setAttribute( "snapping", "0" );
}
if ( mGridVisible )
{
compositionElem.setAttribute( "gridVisible", "1" );
}
else
{
compositionElem.setAttribute( "gridVisible", "0" );
}
compositionElem.setAttribute( "snapGridResolution", QString::number( mSnapGridResolution ) );
compositionElem.setAttribute( "snapGridOffsetX", QString::number( mSnapGridOffsetX ) );
compositionElem.setAttribute( "snapGridOffsetY", QString::number( mSnapGridOffsetY ) );
//custom snap lines
QList< QGraphicsLineItem* >::const_iterator snapLineIt = mSnapLines.constBegin();
for ( ; snapLineIt != mSnapLines.constEnd(); ++snapLineIt )
{
QDomElement snapLineElem = doc.createElement( "SnapLine" );
QLineF line = ( *snapLineIt )->line();
snapLineElem.setAttribute( "x1", QString::number( line.x1() ) );
snapLineElem.setAttribute( "y1", QString::number( line.y1() ) );
snapLineElem.setAttribute( "x2", QString::number( line.x2() ) );
snapLineElem.setAttribute( "y2", QString::number( line.y2() ) );
compositionElem.appendChild( snapLineElem );
}
compositionElem.setAttribute( "printResolution", mPrintResolution );
compositionElem.setAttribute( "printAsRaster", mPrintAsRaster );
compositionElem.setAttribute( "generateWorldFile", mGenerateWorldFile ? 1 : 0 );
if ( mGenerateWorldFile && mWorldFileMap )
{
compositionElem.setAttribute( "worldFileMap", mWorldFileMap->id() );
}
compositionElem.setAttribute( "alignmentSnap", mAlignmentSnap ? 1 : 0 );
compositionElem.setAttribute( "guidesVisible", mGuidesVisible ? 1 : 0 );
compositionElem.setAttribute( "smartGuides", mSmartGuides ? 1 : 0 );
compositionElem.setAttribute( "snapTolerancePixels", mSnapTolerance );
//save items except paper items and frame items (they are saved with the corresponding multiframe)
QList<QGraphicsItem*> itemList = items();
QList<QGraphicsItem*>::const_iterator itemIt = itemList.constBegin();
for ( ; itemIt != itemList.constEnd(); ++itemIt )
{
const QgsComposerItem* composerItem = dynamic_cast<const QgsComposerItem*>( *itemIt );
if ( composerItem )
{
if ( composerItem->type() != QgsComposerItem::ComposerPaper && composerItem->type() != QgsComposerItem::ComposerFrame )
{
composerItem->writeXML( compositionElem, doc );
}
}
}
//save multiframes
QSet<QgsComposerMultiFrame*>::const_iterator multiFrameIt = mMultiFrames.constBegin();
for ( ; multiFrameIt != mMultiFrames.constEnd(); ++multiFrameIt )
{
( *multiFrameIt )->writeXML( compositionElem, doc );
}
composerElem.appendChild( compositionElem );
//data defined properties
QgsComposerUtils::writeDataDefinedPropertyMap( compositionElem, doc, &mDataDefinedNames, &mDataDefinedProperties );
return true;
}
bool QgsComposition::readXML( const QDomElement& compositionElem, const QDomDocument& doc )
{
Q_UNUSED( doc );
if ( compositionElem.isNull() )
{
return false;
}
//create pages
bool widthConversionOk, heightConversionOk;
mPageWidth = compositionElem.attribute( "paperWidth" ).toDouble( &widthConversionOk );
mPageHeight = compositionElem.attribute( "paperHeight" ).toDouble( &heightConversionOk );
emit paperSizeChanged();
int numPages = compositionElem.attribute( "numPages", "1" ).toInt();
QDomElement pageStyleSymbolElem = compositionElem.firstChildElement( "symbol" );
if ( !pageStyleSymbolElem.isNull() )
{
delete mPageStyleSymbol;
mPageStyleSymbol = QgsSymbolLayerV2Utils::loadSymbol<QgsFillSymbolV2>( pageStyleSymbolElem );
}
if ( widthConversionOk && heightConversionOk )
{
removePaperItems();
for ( int i = 0; i < numPages; ++i )
{
addPaperItem();
}
}
//snapping
mSnapToGrid = compositionElem.attribute( "snapping", "0" ).toInt() == 0 ? false : true;
mGridVisible = compositionElem.attribute( "gridVisible", "0" ).toInt() == 0 ? false : true;
mSnapGridResolution = compositionElem.attribute( "snapGridResolution" ).toDouble();
mSnapGridOffsetX = compositionElem.attribute( "snapGridOffsetX" ).toDouble();
mSnapGridOffsetY = compositionElem.attribute( "snapGridOffsetY" ).toDouble();
mAlignmentSnap = compositionElem.attribute( "alignmentSnap", "1" ).toInt() == 0 ? false : true;
mGuidesVisible = compositionElem.attribute( "guidesVisible", "1" ).toInt() == 0 ? false : true;
mSmartGuides = compositionElem.attribute( "smartGuides", "1" ).toInt() == 0 ? false : true;
mSnapTolerance = compositionElem.attribute( "snapTolerancePixels", "10" ).toInt();
//custom snap lines
QDomNodeList snapLineNodes = compositionElem.elementsByTagName( "SnapLine" );
for ( int i = 0; i < snapLineNodes.size(); ++i )
{
QDomElement snapLineElem = snapLineNodes.at( i ).toElement();
QGraphicsLineItem* snapItem = addSnapLine();
double x1 = snapLineElem.attribute( "x1" ).toDouble();
double y1 = snapLineElem.attribute( "y1" ).toDouble();
double x2 = snapLineElem.attribute( "x2" ).toDouble();
double y2 = snapLineElem.attribute( "y2" ).toDouble();
snapItem->setLine( x1, y1, x2, y2 );
}
mPrintAsRaster = compositionElem.attribute( "printAsRaster" ).toInt();
mPrintResolution = compositionElem.attribute( "printResolution", "300" ).toInt();
mGenerateWorldFile = compositionElem.attribute( "generateWorldFile", "0" ).toInt() == 1 ? true : false;
//data defined properties
QgsComposerUtils::readDataDefinedPropertyMap( compositionElem, &mDataDefinedNames, &mDataDefinedProperties );
updatePaperItems();
updateBounds();
return true;
}
bool QgsComposition::loadFromTemplate( const QDomDocument& doc, QMap<QString, QString>* substitutionMap, bool addUndoCommands, const bool clearComposition )
{
if ( clearComposition )
{
deleteAndRemoveMultiFrames();
//delete all non paper items and emit itemRemoved signal
QList<QGraphicsItem *> itemList = items();
QList<QGraphicsItem *>::iterator itemIter = itemList.begin();
for ( ; itemIter != itemList.end(); ++itemIter )
{
QgsComposerItem* cItem = dynamic_cast<QgsComposerItem*>( *itemIter );
QgsPaperItem* pItem = dynamic_cast<QgsPaperItem*>( *itemIter );
if ( cItem && !pItem )
{
removeItem( cItem );
emit itemRemoved( cItem );
delete cItem;
}
}
mItemsModel->clear();
removePaperItems();
mUndoStack->clear();
}
QDomDocument importDoc;
if ( substitutionMap )
{
QString xmlString = doc.toString();
QMap<QString, QString>::const_iterator sIt = substitutionMap->constBegin();
for ( ; sIt != substitutionMap->constEnd(); ++sIt )
{
xmlString = xmlString.replace( "[" + sIt.key() + "]", encodeStringForXML( sIt.value() ) );
}
QString errorMsg;
int errorLine, errorColumn;
if ( !importDoc.setContent( xmlString, &errorMsg, &errorLine, &errorColumn ) )
{
return false;
}
}
else
{
importDoc = doc;
}
//read general settings
QDomElement atlasElem;
if ( clearComposition )
{
QDomElement compositionElem = importDoc.documentElement().firstChildElement( "Composition" );
if ( compositionElem.isNull() )
{
return false;
}
bool ok = readXML( compositionElem, importDoc );
if ( !ok )
{
return false;
}
// read atlas parameters - must be done before adding items
atlasElem = importDoc.documentElement().firstChildElement( "Atlas" );
atlasComposition().readXML( atlasElem, importDoc );
}
// remove all uuid attributes since we don't want duplicates UUIDS
QDomNodeList composerItemsNodes = importDoc.elementsByTagName( "ComposerItem" );
for ( int i = 0; i < composerItemsNodes.count(); ++i )
{
QDomNode composerItemNode = composerItemsNodes.at( i );
if ( composerItemNode.isElement() )