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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "NavigationBar.h"
#include "NavigationBarItem.h"
#include "TimelineConstants.h"
#include <QtCore/qdebug.h>
NavigationBar::NavigationBar(QWidget *parent)
: QWidget(parent)
{
setMaximumHeight(0);
m_layout = new QHBoxLayout(this);
m_layout->setMargin(4);
m_layout->setSpacing(4);
setLayout(m_layout);
// Initialize hide/show animation
m_expandAnimation.setTargetObject(this);
m_expandAnimation.setPropertyName("maximumHeight");
m_expandAnimation.setDuration(TimelineConstants::EXPAND_ANIMATION_DURATION);
}
void NavigationBar::updateNavigationItems(IBreadCrumbProvider *inBreadCrumbProvider)
{
if (!inBreadCrumbProvider)
return;
m_breadCrumbProvider = inBreadCrumbProvider;
const IBreadCrumbProvider::TTrailList &trailList = m_breadCrumbProvider->GetTrail();
int listSize = (int)trailList.size();
// Remove "stretch" from end
QLayoutItem *stretch = m_layout->takeAt(m_layout->count() - 1);
if (stretch)
delete stretch;
// Update current items or create new as needed
for (int i = 0; i < listSize; ++i) {
SBreadCrumb item = trailList.at(i);
NavigationBarItem *barItem = nullptr;
bool newItem = (m_itemAmount <= 0) || (i > m_itemAmount - 1);
if (newItem) {
barItem = new NavigationBarItem(this);
} else {
// Every other item is NavigationBarItem, every other separator
int barItemIndex = i * 2;
barItem = static_cast<NavigationBarItem *>(
m_layout->itemAt(barItemIndex)->widget());
barItem->setHighlight(false);
}
bool isLastItem = (i == listSize - 1);
barItem->setEnabled(!isLastItem);
barItem->setIndex(i);
barItem->setText(item.m_String);
if (i == 0)
barItem->setIcon(m_breadCrumbProvider->GetRootImage());
else
barItem->setIcon(m_breadCrumbProvider->GetBreadCrumbImage());
if (newItem) {
QObject::connect(barItem, &NavigationBarItem::clicked,
this, &NavigationBar::itemClicked);
if (i != 0) {
// Separator before all items except first
QLabel *separator = new QLabel(this);
separator->setPixmap(m_breadCrumbProvider->GetSeparatorImage());
m_layout->addWidget(separator);
}
m_layout->addWidget(barItem);
}
}
// Remove possible extra items, when user navigates back
// First item (scene) is never removed
QLayoutItem *child;
int lastIndex = (listSize <= 1) ? 1 : (listSize * 2) - 1;
while ((child = m_layout->takeAt(lastIndex)) != 0) {
if (child->widget())
delete child->widget();
delete child;
}
// When list contains single item (scene), hide the bar
setBarVisibility(listSize > 1);
// Stretch at end for proper item sizing
m_layout->addStretch(1);
m_itemAmount = listSize;
}
void NavigationBar::itemClicked(int index)
{
m_breadCrumbProvider->OnBreadCrumbClicked((long)index);
}
void NavigationBar::setBarVisibility(bool visible)
{
int endHeight = visible ? TimelineConstants::NAVIGATION_BAR_H : 0;
if (height() != endHeight) {
m_expandAnimation.setEndValue(endHeight);
m_expandAnimation.start();
}
}
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