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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* https://lxqt.org
*
* Copyright: 2011 Razor team
* 2014 LXQt team
* Authors:
* Alexander Sokoloff <sokoloff.a@gmail.com>
* Maciej Płaza <plaza.maciej@gmail.com>
* Kuzma Shapran <kuzma.shapran@gmail.com>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#include "lxqtgrouppopup.h"
#include "lxqttaskgroup.h"
#include <QEnterEvent>
#include <QDrag>
#include <QMimeData>
#include <QLayout>
#include <QPainter>
#include <QStyleOption>
#include <QDebug>
/************************************************
this class is just a container of window buttons
the main purpose is showing window buttons in
vertical layout and drag&drop feature inside
group
************************************************/
LXQtGroupPopup::LXQtGroupPopup(LXQtTaskGroup *group):
QFrame(group),
mGroup(group)
{
Q_ASSERT(group);
setAcceptDrops(true);
setWindowFlags(Qt::FramelessWindowHint | Qt::ToolTip);
setAttribute(Qt::WA_AlwaysShowToolTips);
setAttribute(Qt::WA_TranslucentBackground);
setLayout(new QVBoxLayout);
layout()->setSpacing(3);
layout()->setContentsMargins(3, 3, 3, 3);
connect(&mCloseTimer, &QTimer::timeout, this, &LXQtGroupPopup::closeTimerSlot);
mCloseTimer.setSingleShot(true);
mCloseTimer.setInterval(400);
}
LXQtGroupPopup::~LXQtGroupPopup() = default;
void LXQtGroupPopup::dropEvent(QDropEvent *event)
{
qlonglong temp;
QDataStream stream(event->mimeData()->data(LXQtTaskButton::mimeDataFormat()));
stream >> temp;
WId window = (WId) temp;
LXQtTaskButton *button = nullptr;
int oldIndex(0);
// get current position of the button being dragged
for (int i = 0; i < layout()->count(); i++)
{
LXQtTaskButton *b = qobject_cast<LXQtTaskButton*>(layout()->itemAt(i)->widget());
if (b && b->windowId() == window)
{
button = b;
oldIndex = i;
break;
}
}
if (button == nullptr)
return;
int newIndex = -1;
// find the new position to place it in
for (int i = 0; i < oldIndex && newIndex == -1; i++)
{
QWidget *w = layout()->itemAt(i)->widget();
if (w && w->pos().y() + w->height() / 2 > event->position().y())
newIndex = i;
}
const int size = layout()->count();
for (int i = size - 1; i > oldIndex && newIndex == -1; i--)
{
QWidget *w = layout()->itemAt(i)->widget();
if (w && w->pos().y() + w->height() / 2 < event->position().y())
newIndex = i;
}
if (newIndex == -1 || newIndex == oldIndex)
return;
QVBoxLayout * l = qobject_cast<QVBoxLayout *>(layout());
l->takeAt(oldIndex);
l->insertWidget(newIndex, button);
l->invalidate();
}
void LXQtGroupPopup::dragEnterEvent(QDragEnterEvent *event)
{
event->accept();
QWidget::dragEnterEvent(event);
}
void LXQtGroupPopup::dragLeaveEvent(QDragLeaveEvent *event)
{
hide(false/*not fast*/);
QFrame::dragLeaveEvent(event);
}
/************************************************
*
************************************************/
void LXQtGroupPopup::leaveEvent(QEvent * /*event*/)
{
mCloseTimer.start();
}
/************************************************
*
************************************************/
void LXQtGroupPopup::enterEvent(QEnterEvent * /*event*/)
{
mCloseTimer.stop();
}
void LXQtGroupPopup::paintEvent(QPaintEvent * /*event*/)
{
QPainter p(this);
QStyleOption opt;
opt.initFrom(this);
style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
}
void LXQtGroupPopup::hide(bool fast)
{
if (fast)
close();
else
mCloseTimer.start();
}
void LXQtGroupPopup::show()
{
mCloseTimer.stop();
QFrame::show();
}
int LXQtGroupPopup::indexOf(LXQtTaskButton *button)
{
return layout()->indexOf(button);
}
void LXQtGroupPopup::addButton(LXQtTaskButton *button)
{
layout()->addWidget(button);
}
void LXQtGroupPopup::closeTimerSlot()
{
bool button_has_dnd_hover = false;
QLayout* l = layout();
for (int i = 0; l->count() > i; ++i)
{
LXQtTaskButton const * const button = dynamic_cast<LXQtTaskButton const *>(l->itemAt(i)->widget());
if (nullptr != button && button->hasDragAndDropHover())
{
button_has_dnd_hover = true;
break;
}
}
if (!button_has_dnd_hover)
close();
}
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