matrixion/src/Splitter.cpp

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/*
* nheko Copyright (C) 2017 Konstantinos Sideris <siderisk@auth.gr>
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QApplication>
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#include <QDebug>
#include <QDesktopWidget>
#include <QSettings>
#include <QShortcut>
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#include "Config.h"
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#include "Splitter.h"
constexpr auto MaxWidth = (1 << 24) - 1;
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Splitter::Splitter(QWidget *parent)
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: QSplitter(parent)
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, sz_{utils::calculateSidebarSizes(QFont{})}
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{
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connect(this, &QSplitter::splitterMoved, this, &Splitter::onSplitterMoved);
setChildrenCollapsible(false);
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setStyleSheet("QSplitter::handle { image: none; }");
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}
void
Splitter::restoreSizes(int fallback)
{
QSettings settings;
int savedWidth = settings.value("sidebar/width").toInt();
auto left = widget(0);
if (savedWidth == 0) {
hideSidebar();
return;
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} else if (savedWidth == sz_.small) {
if (left) {
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left->setMinimumWidth(sz_.small);
left->setMaximumWidth(sz_.small);
return;
}
}
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left->setMinimumWidth(sz_.normal);
left->setMaximumWidth(2 * sz_.normal);
setSizes({sz_.normal, fallback - sz_.normal});
setStretchFactor(0, 0);
setStretchFactor(1, 1);
}
Splitter::~Splitter()
{
auto left = widget(0);
if (left) {
QSettings settings;
settings.setValue("sidebar/width", left->width());
}
}
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void
Splitter::onSplitterMoved(int pos, int index)
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{
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Q_UNUSED(pos);
Q_UNUSED(index);
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auto s = sizes();
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if (s.count() < 2) {
qWarning() << "Splitter needs at least two children";
return;
}
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if (s[0] == sz_.normal) {
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rightMoveCount_ += 1;
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if (rightMoveCount_ > moveEventLimit_) {
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auto left = widget(0);
auto cursorPosition = left->mapFromGlobal(QCursor::pos());
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// if we are coming from the right, the cursor should
// end up on the first widget.
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if (left->rect().contains(cursorPosition)) {
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left->setMinimumWidth(sz_.small);
left->setMaximumWidth(sz_.small);
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rightMoveCount_ = 0;
}
}
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} else if (s[0] == sz_.small) {
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leftMoveCount_ += 1;
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if (leftMoveCount_ > moveEventLimit_) {
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auto left = widget(0);
auto right = widget(1);
auto cursorPosition = right->mapFromGlobal(QCursor::pos());
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// We move the start a little further so the transition isn't so abrupt.
auto extended = right->rect();
extended.translate(100, 0);
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// if we are coming from the left, the cursor should
// end up on the second widget.
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if (extended.contains(cursorPosition) &&
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right->size().width() >= sz_.collapsePoint + sz_.normal) {
left->setMinimumWidth(sz_.normal);
left->setMaximumWidth(2 * sz_.normal);
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leftMoveCount_ = 0;
}
}
}
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}
void
Splitter::hideSidebar()
{
auto left = widget(0);
if (left)
left->hide();
}
void
Splitter::showChatView()
{
auto left = widget(0);
auto right = widget(1);
if (right->isHidden()) {
left->hide();
right->show();
// Restore previous size.
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if (left->minimumWidth() == sz_.small) {
left->setMinimumWidth(sz_.small);
left->setMaximumWidth(sz_.small);
} else {
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left->setMinimumWidth(sz_.normal);
left->setMaximumWidth(2 * sz_.normal);
}
}
}
void
Splitter::showFullRoomList()
{
auto left = widget(0);
auto right = widget(1);
right->hide();
left->show();
left->setMaximumWidth(MaxWidth);
}