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/*
* Copyright (C) 2012 Felix Geyer <debfx@fobos.de>
*
* 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 2 or (at your option)
* version 3 of the License.
*
* 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 "DragTabBar.h"
#include <QApplication>
#include <QDragEnterEvent>
#include <QTimer>
DragTabBar::DragTabBar(QWidget* parent)
: QTabBar(parent)
, m_tabSwitchTimer(new QTimer(this))
, m_tabSwitchIndex(-1)
{
m_tabSwitchTimer->setSingleShot(true);
connect(m_tabSwitchTimer, SIGNAL(timeout()), SLOT(dragSwitchTab()));
setAcceptDrops(true);
}
void DragTabBar::dragEnterEvent(QDragEnterEvent* event)
{
int tab = tabAt(event->pos());
if (tab != -1) {
if (tab != currentIndex()) {
m_tabSwitchIndex = tab;
m_tabSwitchTimer->start(QApplication::doubleClickInterval() * 2);
}
event->setAccepted(true);
}
else {
QTabBar::dragEnterEvent(event);
}
}
void DragTabBar::dragMoveEvent(QDragMoveEvent* event)
{
int tab = tabAt(event->pos());
if (tab != -1) {
if (tab == currentIndex()) {
m_tabSwitchTimer->stop();
}
else if (tab != m_tabSwitchIndex) {
m_tabSwitchIndex = tab;
m_tabSwitchTimer->start(QApplication::doubleClickInterval() * 2);
}
event->setAccepted(true);
}
else {
m_tabSwitchIndex = -1;
m_tabSwitchTimer->stop();
QTabBar::dragMoveEvent(event);
}
}
void DragTabBar::dragLeaveEvent(QDragLeaveEvent* event)
{
m_tabSwitchIndex = -1;
m_tabSwitchTimer->stop();
QTabBar::dragLeaveEvent(event);
}
void DragTabBar::dropEvent(QDropEvent* event)
{
m_tabSwitchIndex = -1;
m_tabSwitchTimer->stop();
QTabBar::dropEvent(event);
}
void DragTabBar::tabLayoutChange()
{
m_tabSwitchIndex = -1;
m_tabSwitchTimer->stop();
QTabBar::tabLayoutChange();
}
void DragTabBar::dragSwitchTab()
{
int tab = tabAt(mapFromGlobal(QCursor::pos()));
if (tab != -1 && tab == m_tabSwitchIndex) {
m_tabSwitchIndex = -1;
setCurrentIndex(tab);
}
}
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