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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "callgrindcostdelegate.h"
#include "callgrindcostview.h"
#include "callgrindhelper.h"
#include "callgrind/callgrindabstractmodel.h"
#include "callgrind/callgrindparsedata.h"
#include <utils/qtcassert.h>
#include <QApplication>
#include <QPainter>
using namespace Valgrind::Callgrind;
namespace Valgrind {
namespace Internal {
class CostDelegate::Private
{
public:
Private();
QAbstractItemModel *m_model;
CostDelegate::CostFormat m_format;
float relativeCost(const QModelIndex &index) const;
QString displayText(const QModelIndex &index, const QLocale &locale) const;
};
CostDelegate::Private::Private()
: m_model(0)
, m_format(CostDelegate::FormatAbsolute)
{}
static int toNativeRole(CostDelegate::CostFormat format)
{
switch (format)
{
case CostDelegate::FormatAbsolute:
case CostDelegate::FormatRelative:
return Callgrind::RelativeTotalCostRole;
case CostDelegate::FormatRelativeToParent:
return Callgrind::RelativeParentCostRole;
default:
return -1;
}
}
float CostDelegate::Private::relativeCost(const QModelIndex &index) const
{
bool ok = false;
float cost = index.data(toNativeRole(m_format)).toFloat(&ok);
QTC_ASSERT(ok, return 0);
return cost;
}
QString CostDelegate::Private::displayText(const QModelIndex &index, const QLocale &locale) const
{
switch (m_format) {
case FormatAbsolute:
return locale.toString(index.data().toULongLong());
case FormatRelative:
case FormatRelativeToParent:
if (!m_model)
break;
float cost = relativeCost(index) * 100.0f;
return CallgrindHelper::toPercent(cost, locale);
}
return QString();
}
CostDelegate::CostDelegate(QObject *parent)
: QStyledItemDelegate(parent), d(new Private)
{
}
CostDelegate::~CostDelegate()
{
delete d;
}
void CostDelegate::setModel(QAbstractItemModel *model)
{
d->m_model = model;
}
void CostDelegate::setFormat(CostFormat format)
{
d->m_format = format;
}
CostDelegate::CostFormat CostDelegate::format() const
{
return d->m_format;
}
void CostDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
QStyleOptionViewItemV4 opt(option);
initStyleOption(&opt, index);
QStyle *style = opt.widget ? opt.widget->style() : QApplication::style();
// Draw controls, but no text.
opt.text.clear();
style->drawControl(QStyle::CE_ItemViewItem, &opt, painter);
painter->save();
// Draw bar.
float ratio = qBound(0.0f, d->relativeCost(index), 1.0f);
QRect barRect = opt.rect;
barRect.setWidth(opt.rect.width() * ratio);
painter->setPen(Qt::NoPen);
painter->setBrush(CallgrindHelper::colorForCostRatio(ratio));
painter->drawRect(barRect);
// Draw text.
QLocale loc = opt.locale;
loc.setNumberOptions(0);
const QString text = d->displayText(index, loc);
const QBrush &textBrush = (option.state & QStyle::State_Selected ? opt.palette.highlightedText() : opt.palette.text());
painter->setBrush(Qt::NoBrush);
painter->setPen(textBrush.color());
painter->drawText(opt.rect, Qt::AlignRight, text);
painter->restore();
}
QSize CostDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QStyleOptionViewItemV4 opt(option);
initStyleOption(&opt, index);
const QString text = d->displayText(index, opt.locale);
const QSize size = QSize(option.fontMetrics.width(text),
option.fontMetrics.height());
return size;
}
} // namespace Internal
} // namespace Valgrind
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