[layouts] Allow checking all or unchecking all items in the geopdf

export options dialog at once

Right click on the list shows a "Select All"/"Deselect All" option

Fixes #32281

(cherry picked from commit cbfc112)
(cherry picked from commit 4ac5b98)

src/app/layout/qgsgeopdflayertreemodel.cpp

@@ -169,3 +169,13 @@ bool QgsGeoPdfLayerTreeModel::setData( const QModelIndex &index, const QVariant
   }
   return false;
 }
+
+void QgsGeoPdfLayerTreeModel::checkAll( bool checked, const QModelIndex &parent )
+{
+  for ( int row = 0; row < rowCount( parent ); ++row )
+  {
+    const QModelIndex childIndex = index( row, LayerColumn, parent );
+    setData( childIndex, checked ? Qt::Checked : Qt::Unchecked, Qt::CheckStateRole );
+    checkAll( checked, childIndex );
+  }
+}

src/app/layout/qgsgeopdflayertreemodel.h

@@ -38,6 +38,8 @@ class APP_EXPORT QgsGeoPdfLayerTreeModel : public QgsLayerTreeModel
     QVariant data( const QModelIndex &index, int role ) const override;
     bool setData( const QModelIndex &index, const QVariant &value, int role ) override;
 
+    void checkAll( bool checked, const QModelIndex &parent = QModelIndex() );
+
   private:
     enum Columns
     {

src/app/layout/qgslayoutpdfexportoptionsdialog.cpp

@@ -26,12 +26,15 @@
 
 #include <QCheckBox>
 #include <QPushButton>
+#include <QMenu>
 
 QgsLayoutPdfExportOptionsDialog::QgsLayoutPdfExportOptionsDialog( QWidget *parent, Qt::WindowFlags flags )
   : QDialog( parent, flags )
 {
   setupUi( this );
 
+  mGeoPdfStructureTreeMenu = new QMenu( this );
+
   mTextRenderFormatComboBox->addItem( tr( "Always Export Text as Paths (Recommended)" ), QgsRenderContext::TextFormatAlwaysOutlines );
   mTextRenderFormatComboBox->addItem( tr( "Always Export Text as Text Objects" ), QgsRenderContext::TextFormatAlwaysText );
 
@@ -64,12 +67,20 @@ QgsLayoutPdfExportOptionsDialog::QgsLayoutPdfExportOptionsDialog( QWidget *paren
     mThemesList->addItem( item );
   }
 
-  QgsGeoPdfLayerTreeModel *model = new QgsGeoPdfLayerTreeModel( QgsProject::instance()->layerTreeRoot(), this );
-  mGeoPdfStructureTree->setModel( model );
+  mGeoPdfStructureModel = new QgsGeoPdfLayerTreeModel( QgsProject::instance()->layerTreeRoot(), this );
+  mGeoPdfStructureTree->setModel( mGeoPdfStructureModel );
   mGeoPdfStructureTree->resizeColumnToContents( 0 );
   mGeoPdfStructureTree->header()->show();
   mGeoPdfStructureTree->setSelectionMode( QAbstractItemView::NoSelection );
 
+  mGeoPdfStructureTree->setContextMenuPolicy( Qt::CustomContextMenu );
+  connect( mGeoPdfStructureTree, &QTreeView::customContextMenuRequested, this, [ = ]( const QPoint & point )
+  {
+    const QModelIndex index = mGeoPdfStructureTree->indexAt( point );
+    if ( index.isValid() )
+      showContextMenuForGeoPdfStructure( point, index );
+  } );
+
   connect( buttonBox, &QDialogButtonBox::helpRequested, this, &QgsLayoutPdfExportOptionsDialog::showHelp );
   QgsGui::enableAutoGeometryRestore( this );
 }
@@ -226,3 +237,36 @@ void QgsLayoutPdfExportOptionsDialog::showHelp()
 {
   QgsHelp::openHelp( QStringLiteral( "print_composer/create_output.html" ) );
 }
+
+void QgsLayoutPdfExportOptionsDialog::showContextMenuForGeoPdfStructure( QPoint point, const QModelIndex &index )
+{
+  mGeoPdfStructureTreeMenu->clear();
+
+  switch ( index.column() )
+  {
+    case 0:
+    {
+      QAction *selectAll = new QAction( tr( "Select All" ), mGeoPdfStructureTreeMenu );
+      mGeoPdfStructureTreeMenu->addAction( selectAll );
+      connect( selectAll, &QAction::triggered, this, [ = ]
+      {
+        mGeoPdfStructureModel->checkAll( true );
+      } );
+      QAction *deselectAll = new QAction( tr( "Deselect All" ), mGeoPdfStructureTreeMenu );
+      mGeoPdfStructureTreeMenu->addAction( deselectAll );
+      connect( deselectAll, &QAction::triggered, this, [ = ]
+      {
+        mGeoPdfStructureModel->checkAll( false );
+      } );
+      break;
+    }
+
+    default:
+      break;
+  }
+
+  if ( !mGeoPdfStructureTreeMenu->actions().empty() )
+  {
+    mGeoPdfStructureTreeMenu->exec( mGeoPdfStructureTree->mapToGlobal( point ) );
+  }
+}

src/app/layout/qgslayoutpdfexportoptionsdialog.h

@@ -23,6 +23,8 @@
 
 #include "qgsrendercontext.h"
 
+class QgsGeoPdfLayerTreeModel;
+
 /**
  * A dialog for customizing the properties of an exported PDF file from a layout.
 */
@@ -67,10 +69,13 @@ class QgsLayoutPdfExportOptionsDialog: public QDialog, private Ui::QgsPdfExportO
   private slots:
 
     void showHelp();
+    void showContextMenuForGeoPdfStructure( QPoint point, const QModelIndex &index );
 
   private:
 
     bool mGeopdfAvailable = true;
+    QgsGeoPdfLayerTreeModel *mGeoPdfStructureModel = nullptr;
+    QMenu *mGeoPdfStructureTreeMenu = nullptr;
 
 };