QGIS API Documentation 3.27.0-Master (9c08adf5ef)
qgslayoutqptdrophandler.cpp
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1/***************************************************************************
2 qgslayoutqptdrophandler.cpp
3 ------------------------------
4 begin : December 2017
5 copyright : (C) 2017 by nyall Dawson
6 email : nyall dot dawson at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
18#include "qgslayout.h"
19#include "qgsreadwritecontext.h"
20#include "qgsproject.h"
21#include "qgslayoutview.h"
22#include <QMessageBox>
23
26{
27
28}
29
30bool QgsLayoutQptDropHandler::handleFileDrop( QgsLayoutDesignerInterface *iface, QPointF, const QString &file )
31{
32 const QFileInfo fi( file );
33 if ( fi.suffix().compare( QLatin1String( "qpt" ), Qt::CaseInsensitive ) != 0 )
34 return false;
35
36 QFile templateFile( file );
37 if ( !templateFile.open( QIODevice::ReadOnly ) )
38 {
39 QMessageBox::warning( iface->view(), tr( "Load from Template" ), tr( "Could not read template file." ) );
40 return true;
41 }
42
43 QDomDocument templateDoc;
44 QgsReadWriteContext context;
45 context.setPathResolver( QgsProject::instance()->pathResolver() );
46 if ( templateDoc.setContent( &templateFile ) )
47 {
48 bool ok = false;
49 const QList< QgsLayoutItem * > items = iface->layout()->loadFromTemplate( templateDoc, context, false, &ok );
50 if ( !ok )
51 {
52 QMessageBox::warning( iface->view(), tr( "Load from Template" ), tr( "Could not read template file." ) );
53 return true;
54 }
55 else
56 {
57 whileBlocking( iface->layout() )->deselectAll();
58 iface->selectItems( items );
59 }
60 }
61
62 return true;
63}
Abstract base class that may be implemented to handle new types of data to be dropped or pasted in QG...
A common interface for layout designer dialogs and widgets.
virtual QgsLayoutView * view()=0
Returns the layout view utilized by the designer.
virtual void selectItems(const QList< QgsLayoutItem * > &items)=0
Selects the specified items.
virtual QgsLayout * layout()=0
Returns the current layout displayed in the designer.
bool handleFileDrop(QgsLayoutDesignerInterface *iface, QPointF point, const QString &file) override
Called when the specified file has been dropped onto a QGIS layout.
QgsLayoutQptDropHandler(QObject *parent=nullptr)
constructor
QList< QgsLayoutItem * > loadFromTemplate(const QDomDocument &document, const QgsReadWriteContext &context, bool clearExisting=true, bool *ok=nullptr)
Load a layout template document.
Definition: qgslayout.cpp:609
static QgsProject * instance()
Returns the QgsProject singleton instance.
Definition: qgsproject.cpp:480
The class is used as a container of context for various read/write operations on other objects.
void setPathResolver(const QgsPathResolver &resolver)
Sets up path resolver for conversion between relative and absolute paths.
QgsSignalBlocker< Object > whileBlocking(Object *object)
Temporarily blocks signals from a QObject while calling a single method from the object.
Definition: qgis.h:2330