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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "contentwidget.h"
#include <QChart>
#include <QChartView>
#include <QFont>
#include <QLabel>
#include <QVBoxLayout>
ContentWidget::ContentWidget(QWidget *parent)
: QWidget(parent)
{
}
void ContentWidget::load()
{
if (m_loaded || layout())
return;
if (!doLoad()) {
auto errorLabel = new QLabel(this);
auto errorLayout = new QVBoxLayout(this);
errorLabel->setText(tr("Error loading the example:\n%1").arg(m_loadError));
QFont font = errorLabel->font();
font.setPointSize(20);
errorLabel->setFont(font);
errorLabel->setAlignment(Qt::AlignCenter);
errorLayout->addWidget(errorLabel);
setLayout(errorLayout);
}
m_loaded = true;
}
bool ContentWidget::doLoad()
{
// Most examples do their initialization in constructor.
// Only those that can fail and show error message need to reimplement this method.
return true;
}
void ContentWidget::resizeEvent(QResizeEvent *)
{
if (m_defaultChartView)
m_defaultChartView->resize(size());
}
// Most examples are simple and need only basic chart view widget, so provide it in this base class
// to avoid duplicating code
void ContentWidget::createDefaultChartView(QChart *chart)
{
m_defaultChartView = new QChartView(chart, this);
m_defaultChartView->setRenderHint(QPainter::Antialiasing);
}
void ContentWidget::setDefaultChartView(QChartView *view)
{
m_defaultChartView = view;
m_defaultChartView->setRenderHint(QPainter::Antialiasing);
}