void FilterExpressionsPreferencesFrame::keyPressEvent(QKeyEvent *evt)
{
    if (cur_line_edit_ && cur_line_edit_->hasFocus()) {
        switch (evt->key()) {
        case Qt::Key_Escape:
            cur_line_edit_->setText(saved_col_string_);
            /* Fall Through */
        case Qt::Key_Enter:
        case Qt::Key_Return:
            switch (cur_column_) {
            case label_col_:
                labelEditingFinished();
                break;
            case expression_col_:
                expressionEditingFinished();
                break;
            default:
                break;
            }

            delete cur_line_edit_;
            return;
        default:
            break;
        }
    }
    QFrame::keyPressEvent(evt);
}
예제 #2
0
QgsFieldExpressionWidget::QgsFieldExpressionWidget( QWidget *parent )
    : QWidget( parent )
    , mExpressionDialogTitle( tr( "Expression dialog" ) )
    , mDa( 0 )
{
  QHBoxLayout* layout = new QHBoxLayout( this );
  layout->setContentsMargins( 0, 0, 0, 0 );
  mCombo = new QComboBox( this );
  mCombo->setEditable( true );
  mCombo->setSizePolicy( QSizePolicy::MinimumExpanding, QSizePolicy::Minimum );
  mFieldProxyModel = new QgsFieldProxyModel( mCombo );
  mFieldProxyModel->sourceFieldModel()->setAllowExpression( true );
  mCombo->setModel( mFieldProxyModel );

  mButton = new QToolButton( this );
  mButton->setSizePolicy( QSizePolicy::Minimum, QSizePolicy::Minimum );
  mButton->setIcon( QgsApplication::getThemeIcon( "/mIconExpression.svg" ) );

  layout->addWidget( mCombo );
  layout->addWidget( mButton );

  // give focus to the combo
  // hence if the widget is used as a delegate
  // it will allow pressing on the expression dialog button
  setFocusProxy( mCombo );

  connect( mCombo->lineEdit(), SIGNAL( textEdited( QString ) ), this, SLOT( expressionEdited( QString ) ) );
  connect( mCombo->lineEdit(), SIGNAL( editingFinished() ), this, SLOT( expressionEditingFinished() ) );
  connect( mCombo, SIGNAL( activated( int ) ), this, SLOT( currentFieldChanged() ) );
  connect( mButton, SIGNAL( clicked() ), this, SLOT( editExpression() ) );
  connect( mCombo->lineEdit(), SIGNAL( returnPressed() ), this, SIGNAL( returnPressed() ) );
}
void FilterExpressionsPreferencesFrame::on_expressionTreeWidget_itemActivated(QTreeWidgetItem *item, int column)
{
    if (!item || cur_line_edit_) return;

    QWidget *editor = NULL;
    cur_column_ = column;

    switch (column) {
    case label_col_:
    {
        cur_line_edit_ = new QLineEdit();
        cur_column_ = column;
        saved_col_string_ = item->text(label_col_);
        connect(cur_line_edit_, SIGNAL(editingFinished()), this, SLOT(labelEditingFinished()));
        editor = cur_line_edit_;
        break;
    }
    case expression_col_:
    {
        SyntaxLineEdit *syntax_edit = new SyntaxLineEdit();
        saved_col_string_ = item->text(expression_col_);
        connect(syntax_edit, SIGNAL(textChanged(QString)),
                this, SLOT(expressionTextChanged(QString)));
        connect(syntax_edit, SIGNAL(editingFinished()), this, SLOT(expressionEditingFinished()));
        editor = cur_line_edit_ = syntax_edit;
        break;
    }
    default:
        return;
    }

    if (cur_line_edit_) {
        cur_line_edit_->setText(saved_col_string_);
        cur_line_edit_->selectAll();
        connect(cur_line_edit_, SIGNAL(destroyed()), this, SLOT(lineEditDestroyed()));
    }

    if (editor) {
        QFrame *edit_frame = new QFrame();
        QHBoxLayout *hb = new QHBoxLayout();
        QSpacerItem *spacer = new QSpacerItem(5, 10);

        hb->addWidget(editor, 0);
        hb->addSpacerItem(spacer);
        hb->setStretch(1, 1);
        hb->setContentsMargins(0, 0, 0, 0);

        edit_frame->setLineWidth(0);
        edit_frame->setFrameStyle(QFrame::NoFrame);
        // The documentation suggests setting autoFillbackground. That looks silly
        // so we clear the item text instead.
        item->setText(cur_column_, "");
        edit_frame->setLayout(hb);
        ui->expressionTreeWidget->setItemWidget(item, cur_column_, edit_frame);
        editor->setFocus();
    }
}
예제 #4
0
QgsFieldExpressionWidget::QgsFieldExpressionWidget( QWidget *parent )
    : QWidget( parent )
    , mExpressionDialogTitle( tr( "Expression dialog" ) )
    , mDa( nullptr )
    , mExpressionContextCallback( nullptr )
    , mExpressionContextCallbackContext( nullptr )
{
  QHBoxLayout* layout = new QHBoxLayout( this );
  layout->setContentsMargins( 0, 0, 0, 0 );

  mCombo = new QComboBox( this );
  mCombo->setEditable( true );
  mCombo->setSizePolicy( QSizePolicy::MinimumExpanding, QSizePolicy::Minimum );
  int width = mCombo->minimumSizeHint().width();
  mCombo->setMinimumWidth( width );

  mFieldProxyModel = new QgsFieldProxyModel( mCombo );
  mFieldProxyModel->sourceFieldModel()->setAllowExpression( true );
  mCombo->setModel( mFieldProxyModel );

  mButton = new QToolButton( this );
  mButton->setSizePolicy( QSizePolicy::Minimum, QSizePolicy::Minimum );
  mButton->setIcon( QgsApplication::getThemeIcon( "/mIconExpression.svg" ) );

  layout->addWidget( mCombo );
  layout->addWidget( mButton );

  // give focus to the combo
  // hence if the widget is used as a delegate
  // it will allow pressing on the expression dialog button
  setFocusProxy( mCombo );

  connect( mCombo->lineEdit(), SIGNAL( textEdited( QString ) ), this, SLOT( expressionEdited( QString ) ) );
  connect( mCombo->lineEdit(), SIGNAL( editingFinished() ), this, SLOT( expressionEditingFinished() ) );
  connect( mCombo, SIGNAL( activated( int ) ), this, SLOT( currentFieldChanged() ) );
  connect( mButton, SIGNAL( clicked() ), this, SLOT( editExpression() ) );
  connect( mFieldProxyModel, SIGNAL( modelAboutToBeReset() ), this, SLOT( beforeResetModel() ) );
  connect( mFieldProxyModel, SIGNAL( modelReset() ), this, SLOT( afterResetModel() ) );
  // NW TODO - Fix in 2.6
//  connect( mCombo->lineEdit(), SIGNAL( returnPressed() ), this, SIGNAL( returnPressed() ) );

  mExpressionContext.reset( new QgsExpressionContext() );
  mExpressionContext->appendScope( QgsExpressionContextUtils::globalScope() );
  mExpressionContext->appendScope( QgsExpressionContextUtils::projectScope() );
}