Method keyPressEvent

MiniZincIDE/codeeditor.cpp:200–293

}

void CodeEditor::keyPressEvent(QKeyEvent *e)
{
    if (completer->popup()->isVisible()) {
        switch (e->key()) {
        case Qt::Key_Enter:
        case Qt::Key_Return:
        case Qt::Key_Escape:
        case Qt::Key_Tab:
        case Qt::Key_Backtab:
            e->ignore();
            return; // let the completer do default behavior
        default:
            break;
        }
    }
    if (e->key() == Qt::Key_Backtab) {
        e->accept();
        shiftLeft();
        ensureCursorVisible();
    } else if (e->key() == Qt::Key_Tab) {
        e->accept();
        auto cursor = textCursor();
        auto startBlock = document()->findBlock(cursor.selectionStart());
        auto endBlock = document()->findBlock(cursor.selectionEnd());
        auto partialLineSelection = startBlock.position() != cursor.selectionStart()
                || endBlock.position() + endBlock.length() - 1 != cursor.selectionEnd();
        if (!cursor.hasSelection() || (startBlock == endBlock && partialLineSelection)) {
            if (useTabs) {
                cursor.insertText("\t");
            } else {
                auto posInLine = cursor.selectionStart() - startBlock.position();
                auto distanceFromTabStop = 0;
                auto line = startBlock.text();
                for (int i = 0; i < posInLine; i++) {
                    if (line[i] == '\t') {
                        distanceFromTabStop = 0;
                    } else if (line[i].isSpace()) {
                        distanceFromTabStop++;
                    } else {
                        break;
                    }
                }
                auto toAdd = distanceFromTabStop % indentSize;
                if (toAdd == 0) {
                    toAdd = indentSize;
                }
                cursor.insertText(QString(" ").repeated(toAdd));
            }
        } else {
            shiftRight();
        }
        ensureCursorVisible();
    } else if (e->key() == Qt::Key_Return) {
        e->accept();
        QTextCursor cursor(textCursor());
        QString curLine = cursor.block().text();
        QRegularExpression leadingWhitespace("^(\\s*)");
        cursor.insertText("\n");