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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** 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.
**
****************************************************************************/
#ifndef FLAMEGRAPH_H
#define FLAMEGRAPH_H
#include <QQuickItem>
#include <QAbstractItemModel>
namespace QmlProfilerExtension {
namespace Internal {
class FlameGraphAttached : public QObject
{
Q_OBJECT
Q_PROPERTY(qreal relativeSize READ relativeSize WRITE setRelativeSize
NOTIFY relativeSizeChanged)
Q_PROPERTY(qreal relativePosition READ relativePosition WRITE setRelativePosition
NOTIFY relativePositionChanged)
Q_PROPERTY(bool dataValid READ isDataValid NOTIFY dataValidChanged)
public:
FlameGraphAttached(QObject *parent = 0) :
QObject(parent), m_relativeSize(0), m_relativePosition(0) {}
Q_INVOKABLE QVariant data(int role) const;
bool isDataValid() const
{
return m_data.isValid();
}
qreal relativeSize() const
{
return m_relativeSize;
}
void setRelativeSize(qreal relativeSize)
{
if (relativeSize != m_relativeSize) {
m_relativeSize = relativeSize;
emit relativeSizeChanged();
}
}
qreal relativePosition() const
{
return m_relativePosition;
}
void setRelativePosition(qreal relativePosition)
{
if (relativePosition != m_relativePosition) {
m_relativePosition = relativePosition;
emit relativePositionChanged();
}
}
void setModelIndex(const QModelIndex &data)
{
if (data != m_data) {
bool validChanged = (data.isValid() != m_data.isValid());
m_data = data;
if (validChanged)
emit dataValidChanged();
emit dataChanged();
}
}
signals:
void dataChanged();
void dataValidChanged();
void relativeSizeChanged();
void relativePositionChanged();
private:
QPersistentModelIndex m_data;
qreal m_relativeSize;
qreal m_relativePosition;
};
class FlameGraph : public QQuickItem
{
Q_OBJECT
Q_PROPERTY(QQmlComponent* delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)
Q_PROPERTY(QAbstractItemModel* model READ model WRITE setModel NOTIFY modelChanged)
Q_PROPERTY(int sizeRole READ sizeRole WRITE setSizeRole NOTIFY sizeRoleChanged)
Q_PROPERTY(qreal sizeThreshold READ sizeThreshold WRITE setSizeThreshold
NOTIFY sizeThresholdChanged)
Q_PROPERTY(int depth READ depth NOTIFY depthChanged)
public:
FlameGraph(QQuickItem *parent = 0);
QQmlComponent *delegate() const;
void setDelegate(QQmlComponent *delegate);
QAbstractItemModel *model() const;
void setModel(QAbstractItemModel *model);
int sizeRole() const;
void setSizeRole(int sizeRole);
qreal sizeThreshold() const;
void setSizeThreshold(qreal sizeThreshold);
int depth() const;
static FlameGraphAttached *qmlAttachedProperties(QObject *object);
signals:
void delegateChanged(QQmlComponent *delegate);
void modelChanged(QAbstractItemModel *model);
void sizeRoleChanged(int role);
void sizeThresholdChanged(qreal threshold);
void depthChanged(int depth);
private slots:
void rebuild();
private:
QQmlComponent *m_delegate;
QAbstractItemModel *m_model;
int m_sizeRole;
int m_depth;
qreal m_sizeThreshold;
int buildNode(const QModelIndex &parentIndex, QObject *parentObject, int depth);
QObject *appendChild(QObject *parentObject, QQuickItem *parentItem, QQmlContext *context,
const QModelIndex &childIndex, qreal position, qreal size);
};
}
}
QML_DECLARE_TYPEINFO(QmlProfilerExtension::Internal::FlameGraph, QML_HAS_ATTACHED_PROPERTIES)
#endif // FLAMEGRAPH_H
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