Copyright (C) 2012-2020 Rudolf Cardinal (email@example.com).
This file is part of CamCOPS.
CamCOPS 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 3 of the License, or
(at your option) any later version.
CamCOPS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with CamCOPS. If not, see <http://www.gnu.org/licenses/>.
class VerticalScrollAreaViewport : public QWidget
// Class intended as the viewport widget for VerticalScrollArea, to
// replace the default implementation of QScrollArea, which uses a plain
// QWidget as its viewport.
// The main thing is that it has a DIRECT CHILD WIDGET, given to it by
// the scroll area, not a layout.
// And the thing we need to avoid is that the child widget gets its height
// set based on its sizeHint(), without any reference to heightForWidth().
// HOWEVER, resizeEvent() is not called when we resize the
// VerticalScrollArea, and setGeometry() is not virtual, so this is not
// much use. (If called via a QWidget*, as in
// QAbstractScrollAreaPrivate::layoutChildren(), the base class
// QWidget::setGeometry() will be called.)
VerticalScrollAreaViewport(QWidget* parent = nullptr);
// Perform debugging checks. Report to the debugging stream.
void checkChildSize() const;