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/*
metaobjecttreeclientproxymodel.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2016 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Volker Krause <volker.krause@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#include "metaobjecttreeclientproxymodel.h"
#include <ui/uiintegration.h>
#include <common/qmetaobjectvalidatorresult.h>
#include <common/tools/metaobjectbrowser/qmetaobjectmodel.h>
#include <QApplication>
#include <QColor>
#include <QDebug>
#include <QStyle>
using namespace GammaRay;
MetaObjectTreeClientProxyModel::MetaObjectTreeClientProxyModel(QObject *parent)
: QIdentityProxyModel(parent)
{
}
MetaObjectTreeClientProxyModel::~MetaObjectTreeClientProxyModel() = default;
void MetaObjectTreeClientProxyModel::setSourceModel(QAbstractItemModel *source)
{
QIdentityProxyModel::setSourceModel(source);
connect(source, &QAbstractItemModel::rowsInserted, this, &MetaObjectTreeClientProxyModel::findQObjectIndex);
connect(source, &QAbstractItemModel::dataChanged, this, &MetaObjectTreeClientProxyModel::findQObjectIndex);
findQObjectIndex();
}
// 1 / GRADIENT_SCALE_FACTOR is yellow, 2 / GRADIENT_SCALE_FACTOR and beyond is red
static const int GRADIENT_SCALE_FACTOR = 4;
static QColor colorForRatio(double ratio)
{
const auto red = qBound<qreal>(0.0, ratio * GRADIENT_SCALE_FACTOR, 0.5);
const auto green = qBound<qreal>(0.0, 1 - ratio * GRADIENT_SCALE_FACTOR, 0.5);
auto color = QColor(255 * red, 255 * green, 0);
if (!UiIntegration::hasDarkUI())
return color.lighter(300);
return color;
}
static QString issuesToString(QMetaObjectValidatorResult::Results r)
{
QStringList l;
if (r & QMetaObjectValidatorResult::SignalOverride)
l.push_back(MetaObjectTreeClientProxyModel::tr("overrides base class signal"));
if (r & QMetaObjectValidatorResult::UnknownMethodParameterType)
l.push_back(MetaObjectTreeClientProxyModel::tr("method uses parameter type not registered with the meta type system"));
if (r & QMetaObjectValidatorResult::PropertyOverride)
l.push_back(MetaObjectTreeClientProxyModel::tr("overrides base class property"));
if (r & QMetaObjectValidatorResult::UnknownPropertyType)
l.push_back(MetaObjectTreeClientProxyModel::tr("property with type not registered with the meta type system"));
return MetaObjectTreeClientProxyModel::tr("Issues:<ul><li>%1</li></ul>").arg(l.join(QStringLiteral("</li><li>")));
}
QVariant MetaObjectTreeClientProxyModel::data(const QModelIndex &index, int role) const
{
if (!sourceModel() || !index.isValid())
return QVariant();
if (index.column() == QMetaObjectModel::ObjectColumn) {
const auto issues = QIdentityProxyModel::data(index, QMetaObjectModel::MetaObjectIssues).value<QMetaObjectValidatorResult::Results>();
switch (role) {
case Qt::DecorationRole:
if (issues != QMetaObjectValidatorResult::NoIssue)
return qApp->style()->standardIcon(QStyle::SP_MessageBoxWarning);
break;
case Qt::ToolTipRole: {
if (issues != QMetaObjectValidatorResult::NoIssue)
return issuesToString(issues);
const auto invalid = index.sibling(index.row(), QMetaObjectModel::ObjectInclusiveAliveCountColumn).data(QMetaObjectModel::MetaObjectInvalid).toBool();
if (invalid)
return tr("This meta object might have been deleted.");
break;
}
}
return QIdentityProxyModel::data(index, role);
}
if ((role != Qt::BackgroundRole && role != Qt::ToolTipRole) || !m_qobjIndex.isValid())
return QIdentityProxyModel::data(index, role);
if (!needsBackground(index))
return QIdentityProxyModel::data(index, role); // top-level but not QObject, or QObject incl count
const auto count = index.data(Qt::DisplayRole).toInt();
if (count <= 0)
return QIdentityProxyModel::data(index, role);
const auto totalColumn = (index.column() == QMetaObjectModel::ObjectSelfCountColumn || index.column() == QMetaObjectModel::ObjectInclusiveCountColumn) ? QMetaObjectModel::ObjectInclusiveCountColumn : QMetaObjectModel::ObjectInclusiveAliveCountColumn;
const auto totalCount = m_qobjIndex.sibling(m_qobjIndex.row(), totalColumn).data().toInt();
const auto ratio = ( double )count / ( double )totalCount;
// at this point, role can only be background or tooltip
if (role == Qt::BackgroundRole)
return colorForRatio(ratio);
Q_ASSERT(role == Qt::ToolTipRole);
return tr("%1%").arg(ratio * 100.0, 0, 'f', 2);
}
QVariant MetaObjectTreeClientProxyModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role == Qt::DisplayRole && orientation == Qt::Horizontal) {
switch (section) {
case QMetaObjectModel::ObjectColumn:
return tr("Meta Object Class");
case QMetaObjectModel::ObjectSelfCountColumn:
return tr("Self Total");
case QMetaObjectModel::ObjectInclusiveCountColumn:
return tr("Incl. Total");
case QMetaObjectModel::ObjectSelfAliveCountColumn:
return tr("Self Alive");
case QMetaObjectModel::ObjectInclusiveAliveCountColumn:
return tr("Incl. Alive");
default:
return QVariant();
}
} else if (role == Qt::ToolTipRole) {
switch (section) {
case QMetaObjectModel::ObjectColumn:
return tr("This column shows the QMetaObject class hierarchy.");
case QMetaObjectModel::ObjectSelfCountColumn:
return tr("This column shows the number of objects created of a particular type.");
case QMetaObjectModel::ObjectInclusiveCountColumn:
return tr("This column shows the number of objects created that inherit from a particular type.");
case QMetaObjectModel::ObjectSelfAliveCountColumn:
return tr("This column shows the number of objects created and not yet destroyed of a particular type.");
case QMetaObjectModel::ObjectInclusiveAliveCountColumn:
return tr("This column shows the number of objects created and not yet destroyed that inherit from a particular type.");
default:
return QVariant();
}
}
return QIdentityProxyModel::headerData(section, orientation, role);
}
Qt::ItemFlags MetaObjectTreeClientProxyModel::flags(const QModelIndex &index) const
{
auto f = QIdentityProxyModel::flags(index);
if (index.isValid()) {
const auto idx = index.sibling(index.row(), QMetaObjectModel::ObjectInclusiveAliveCountColumn);
const auto invalid = idx.data(QMetaObjectModel::MetaObjectInvalid).toBool();
if (invalid)
f &= ~Qt::ItemIsEnabled;
}
return f;
}
void MetaObjectTreeClientProxyModel::findQObjectIndex()
{
auto idxList = match(index(0, 0), Qt::DisplayRole,
QStringLiteral("QObject"), 1,
Qt::MatchFixedString | Qt::MatchCaseSensitive);
if (idxList.isEmpty())
return;
m_qobjIndex = idxList.first();
disconnect(sourceModel(), &QAbstractItemModel::rowsInserted, this,
&MetaObjectTreeClientProxyModel::findQObjectIndex);
disconnect(sourceModel(), &QAbstractItemModel::dataChanged, this,
&MetaObjectTreeClientProxyModel::findQObjectIndex);
}
bool MetaObjectTreeClientProxyModel::needsBackground(const QModelIndex &index) const
{
if (index.parent().isValid())
return true;
if (index.row() != m_qobjIndex.row())
return true;
if (index.column() == QMetaObjectModel::ObjectInclusiveCountColumn || index.column() == QMetaObjectModel::ObjectInclusiveAliveCountColumn)
return false;
return true;
}
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