kdganttlistviewrowcontroller.cpp

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/****************************************************************************
**
** This file is part of the KD Chart library.
**
** SPDX-FileCopyrightText: 2001 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
**
** SPDX-License-Identifier: MIT
**
****************************************************************************/
 
#include "kdganttlistviewrowcontroller.h"
#include "kdganttlistviewrowcontroller_p.h"
 
#include <QAbstractProxyModel>
#include <QScrollBar>
 
#include <cassert>
 
using namespace KDGantt;
 
ListViewRowController::ListViewRowController(QListView *lv, QAbstractProxyModel *proxy)
    : _d(new Private(lv, proxy))
{
}
 
ListViewRowController::~ListViewRowController()
{
    delete _d;
    _d = nullptr;
}
 
#define d d_func()
 
int ListViewRowController::headerHeight() const
{
    return d->listview->viewport()->y() - d->listview->frameWidth();
}
 
int ListViewRowController::maximumItemHeight() const
{
    return d->listview->fontMetrics().height();
}
 
int ListViewRowController::totalHeight() const
{
    return d->listview->verticalScrollBar()->maximum() + d->listview->viewport()->height();
}
 
bool ListViewRowController::isRowVisible(const QModelIndex &_idx) const
{
    const QModelIndex idx = d->proxy->mapToSource(_idx);
    assert(idx.isValid() ? (idx.model() == d->listview->model()) : (true));
    return d->listview->visualRect(idx).isValid();
}
 
bool ListViewRowController::isRowExpanded(const QModelIndex &_idx) const
{
    Q_UNUSED(_idx);
 
    return false;
}
 
Span ListViewRowController::rowGeometry(const QModelIndex &_idx) const
{
    const QModelIndex idx = d->proxy->mapToSource(_idx);
    assert(idx.isValid() ? (idx.model() == d->listview->model()) : (true));
    QRect r = d->listview->visualRect(idx).translated(QPoint(0,
                                                             static_cast<Private::HackListView *>(d->listview)->verticalOffset()));
    return Span(r.y(), r.height());
}
 
QModelIndex ListViewRowController::indexAt(int height) const
{
    return d->proxy->mapFromSource(d->listview->indexAt(QPoint(1, height)));
}
 
QModelIndex ListViewRowController::indexAbove(const QModelIndex &_idx) const
{
    const QModelIndex idx = d->proxy->mapToSource(_idx);
    return d->proxy->mapFromSource(idx.sibling(idx.row() - 1, idx.column()));
}
 
QModelIndex ListViewRowController::indexBelow(const QModelIndex &_idx) const
{
    const QModelIndex idx = d->proxy->mapToSource(_idx);
    if (!idx.isValid() || idx.column() != 0)
        return QModelIndex();
    if (idx.model()->rowCount(idx.parent()) < idx.row() + 1)
        return QModelIndex();
    return d->proxy->mapFromSource(idx.sibling(idx.row() + 1, idx.column()));
}