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qTox/src/widget/splitterrestorer.cpp

70 lines
2.3 KiB
C++

/*
Copyright © 2017 by The qTox Project Contributors
This file is part of qTox, a Qt-based graphical interface for Tox.
qTox is libre 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.
qTox 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 qTox. If not, see <http://www.gnu.org/licenses/>.
*/
#include "src/widget/splitterrestorer.h"
#include <QSplitter>
/**
* @class SplitterRestorer
* @brief Restore splitter from saved state and reset to default
*/
/**
* @brief The width of the default splitter handles.
* By default, this property contains a value that depends on the user's
* platform and style preferences.
*/
static int defaultWidth = 0;
/**
* @brief Width of left splitter size in percents.
*/
const static int leftWidthPercent = 33;
SplitterRestorer::SplitterRestorer(QSplitter* splitter)
: splitter{splitter}
{
if (defaultWidth == 0) {
defaultWidth = QSplitter().handleWidth();
}
}
/**
* @brief Restore splitter from state. And reset in case of error.
* Set the splitter to a reasonnable width by default and on first start
* @param state State saved by QSplitter::saveState()
* @param windowSize Widnow size (used to calculate splitter size)
*/
void SplitterRestorer::restore(const QByteArray& state, const QSize& windowSize)
{
bool brokenSplitter = !splitter->restoreState(state) || splitter->orientation() != Qt::Horizontal
|| splitter->handleWidth() > defaultWidth;
if (splitter->count() == 2 && brokenSplitter) {
splitter->setOrientation(Qt::Horizontal);
splitter->setHandleWidth(defaultWidth);
splitter->resize(windowSize);
QList<int> sizes = splitter->sizes();
sizes[0] = splitter->width() * leftWidthPercent / 100;
sizes[1] = splitter->width() - sizes[0];
splitter->setSizes(sizes);
}
}