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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 <QSettings>
#include "Logging.h"
#include "Splitter.h"
constexpr auto MaxWidth = (1 << 24) - 1;
Splitter::Splitter(QWidget *parent)
: QSplitter(parent)
, sz_{splitter::calculateSidebarSizes(QFont{})}
{
connect(this, &QSplitter::splitterMoved, this, &Splitter::onSplitterMoved);
setChildrenCollapsible(false);
setStyleSheet("QSplitter::handle { image: none; }");
}
void
Splitter::restoreSizes(int fallback)
{
QSettings settings;
int savedWidth = settings.value("sidebar/width").toInt();
auto left = widget(0);
if (savedWidth == 0) {
hideSidebar();
return;
} else if (savedWidth == sz_.small) {
if (left) {
left->setMinimumWidth(sz_.small);
left->setMaximumWidth(sz_.small);
return;
}
}
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());
}
}
void
Splitter::onSplitterMoved(int pos, int index)
{
Q_UNUSED(pos);
Q_UNUSED(index);
auto s = sizes();
if (s.count() < 2) {
nhlog::ui()->warn("Splitter needs at least two children");
return;
}
if (s[0] == sz_.normal) {
rightMoveCount_ += 1;
if (rightMoveCount_ > moveEventLimit_) {
auto left = widget(0);
auto cursorPosition = left->mapFromGlobal(QCursor::pos());
// if we are coming from the right, the cursor should
// end up on the first widget.
if (left->rect().contains(cursorPosition)) {
left->setMinimumWidth(sz_.small);
left->setMaximumWidth(sz_.small);
rightMoveCount_ = 0;
}
}
} else if (s[0] == sz_.small) {
leftMoveCount_ += 1;
if (leftMoveCount_ > moveEventLimit_) {
auto left = widget(0);
auto right = widget(1);
auto cursorPosition = right->mapFromGlobal(QCursor::pos());
// We move the start a little further so the transition isn't so abrupt.
auto extended = right->rect();
extended.translate(100, 0);
// if we are coming from the left, the cursor should
// end up on the second widget.
if (extended.contains(cursorPosition) &&
right->size().width() >= sz_.collapsePoint + sz_.normal) {
left->setMinimumWidth(sz_.normal);
left->setMaximumWidth(2 * sz_.normal);
leftMoveCount_ = 0;
}
}
}
}
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.
if (left->minimumWidth() == sz_.small) {
left->setMinimumWidth(sz_.small);
left->setMaximumWidth(sz_.small);
} else {
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);
}
splitter::SideBarSizes
splitter::calculateSidebarSizes(const QFont &f)
{
const auto height = static_cast<double>(QFontMetrics{f}.lineSpacing());
SideBarSizes sz;
sz.small = std::ceil(3.5 * height + height / 4.0);
sz.normal = std::ceil(16 * height);
sz.groups = std::ceil(3 * height);
sz.collapsePoint = 2 * sz.normal;
return sz;
}
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