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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.
**
****************************************************************************/
#include "qmlprofilerstatewidget.h"
#include <utils/qtcassert.h>
#include <utils/theme/theme.h>
#include <QPainter>
#include <QVBoxLayout>
#include <QLabel>
#include <QProgressBar>
#include <QTime>
#include <QDebug>
#include <QTimer>
#include <QPointer>
#include <functional>
namespace QmlProfiler {
namespace Internal {
class QmlProfilerStateWidget::QmlProfilerStateWidgetPrivate
{
public:
QmlProfilerStateWidgetPrivate(QmlProfilerStateWidget *qq) : text(nullptr) { Q_UNUSED(qq); }
QLabel *text;
QPointer<QmlProfilerStateManager> m_profilerState;
QPointer<QmlProfilerModelManager> m_modelManager;
QTimer timer;
};
QmlProfilerStateWidget::QmlProfilerStateWidget(QmlProfilerStateManager *stateManager,
QmlProfilerModelManager *modelManager, QWidget *parent)
: QFrame(parent), d(new QmlProfilerStateWidgetPrivate(this))
{
setObjectName(QLatin1String("QML Profiler State Display"));
setFrameStyle(QFrame::StyledPanel);
// UI elements
auto layout = new QVBoxLayout(this);
resize(200,70);
d->text = new QLabel(this);
d->text->setAlignment(Qt::AlignCenter);
setAutoFillBackground(true);
layout->addWidget(d->text);
setLayout(layout);
// profiler state
d->m_modelManager = modelManager;
modelManager->registerFeatures(0, QmlProfilerModelManager::QmlEventLoader(),
std::bind(&QmlProfilerStateWidget::initialize, this),
std::bind(&QmlProfilerStateWidget::clear, this),
std::bind(&QmlProfilerStateWidget::clear, this));
d->m_profilerState = stateManager;
connect(&d->timer, &QTimer::timeout, this, &QmlProfilerStateWidget::updateDisplay);
d->timer.setInterval(1000);
setVisible(false);
}
QmlProfilerStateWidget::~QmlProfilerStateWidget()
{
delete d;
}
void QmlProfilerStateWidget::reposition()
{
QWidget *parentWidget = qobject_cast<QWidget *>(parent());
// positioning it at 2/3 height (it looks better)
move(parentWidget->width()/2 - width()/2, parentWidget->height()/3 - height()/2);
}
void QmlProfilerStateWidget::initialize()
{
connect(d->m_profilerState, &QmlProfilerStateManager::stateChanged,
this, &QmlProfilerStateWidget::updateDisplay);
connect(d->m_profilerState, &QmlProfilerStateManager::serverRecordingChanged,
this, &QmlProfilerStateWidget::updateDisplay);
d->timer.start();
updateDisplay();
}
void QmlProfilerStateWidget::showText(const QString &text)
{
setVisible(true);
d->text->setText(text);
resize(300, 70);
reposition();
}
void QmlProfilerStateWidget::clear()
{
disconnect(d->m_profilerState, &QmlProfilerStateManager::stateChanged,
this, &QmlProfilerStateWidget::updateDisplay);
disconnect(d->m_profilerState, &QmlProfilerStateManager::serverRecordingChanged,
this, &QmlProfilerStateWidget::updateDisplay);
d->timer.stop();
setVisible(false);
}
void QmlProfilerStateWidget::updateDisplay()
{
QTC_ASSERT(d->m_modelManager, return);
QTC_ASSERT(d->m_profilerState, return);
// When application is being profiled
if (d->m_profilerState->serverRecording()) {
// Heuristic to not show the number if the application will only send the events when it
// stops. The number is still > 0 then because we get some StartTrace etc.
const int numEvents = d->m_modelManager->numEvents();
showText(numEvents > 256 ? tr("Profiling application: %n events", nullptr, numEvents) :
tr("Profiling application"));
} else if (d->m_modelManager->traceDuration() > 0 && d->m_modelManager->isEmpty()) {
// After profiling, there is an empty trace
showText(tr("No QML events recorded"));
} else if (!d->m_modelManager->isEmpty()) {
// When datamodel is acquiring data
if (d->m_profilerState->currentState() != QmlProfilerStateManager::Idle) {
// we don't know how much more, so progress numbers are strange here
showText(tr("Loading buffered data: %n events", nullptr,
d->m_modelManager->numEvents()));
} else {
// Application died before all data could be read
showText(tr("Loading offline data: %n events", nullptr,
d->m_modelManager->numEvents()));
}
} else {
showText(tr("Waiting for data"));
}
}
} // namespace Internal
} // namespace QmlProfiler
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