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/* timeline_delegate.h
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later*/
#ifndef TIMELINE_DELEGATE_H
#define TIMELINE_DELEGATE_H
/*
* @file Timeline delegate.
*
* QStyledItemDelegate subclass that will draw a timeline indicator for
* the specified value.
*
* This is intended to be used in QTreeWidgets to show timelines, e.g. for
* conversations.
* To use it, first call setItemDelegate:
*
* myTreeWidget()->setItemDelegateForColumn(col_time_start_, new TimelineDelegate());
*
* Then, for each QTreeWidgetItem, set or return a timeline_span for the start and end
* of the timeline in pixels relative to the column width.
*
* setData(col_start_, Qt::UserRole, start_span);
* setData(col_end_, Qt::UserRole, end_span);
*
*/
#include <QStyledItemDelegate>
// Pixels are relative to item rect and will be clipped.
struct timeline_span {
int start;
int width;
};
Q_DECLARE_METATYPE(timeline_span)
class TimelineDelegate : public QStyledItemDelegate
{
Q_OBJECT
public:
TimelineDelegate(QWidget *parent = 0);
// Make sure QStyledItemDelegate::paint doesn't draw any text.
virtual QString displayText(const QVariant &, const QLocale &) const { return QString(); }
protected:
void paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const;
private:
};
#endif // TIMELINE_DELEGATE_H
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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