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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file GUI/View/Plotter/PlotStatusLabel.cpp
//! @brief Implements class PlotStatusLabel.
//!
//! @homepage http://www.bornagainproject.org
//! @license GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
// ************************************************************************************************
#include "GUI/View/Plotter/PlotStatusLabel.h"
#include "GUI/View/Base/Fontsize.h"
#include "GUI/View/Plotter/MousyPlot.h"
#include <QColor>
#include <QFont>
#include <QPainter>
namespace {
int default_text_size()
{
return GUI::Font::fontSizeRegular();
}
int default_label_height()
{
return GUI::Font::SizeOfLetterM().height() * 1.75;
}
} // namespace
PlotStatusLabel::PlotStatusLabel(const std::vector<MousyPlot*>& plots)
: m_font("Monospace", default_text_size(), QFont::Normal, false)
, m_plots(plots)
{
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
setFixedHeight(default_label_height());
for (auto* plot : m_plots) {
// Enables/disables showing of label for given plot.
// Connects with colorMap's status string signal.
plot->setMouseTrackingEnabled(true);
connect(plot, &MousyPlot::positionChanged,
[this, plot](double x, double y) { setLabelText(plot, x, y); });
connect(plot, &MousyPlot::leavingPlot, this, &PlotStatusLabel::clearLabelText);
connect(plot, &QObject::destroyed, this, &PlotStatusLabel::onPlotDestroyed);
}
}
void PlotStatusLabel::setLabelText(const MousyPlot* plot, double x, double y)
{
m_text = plot->infoString(x, y);
update();
}
void PlotStatusLabel::clearLabelText()
{
m_text = "";
update();
}
void PlotStatusLabel::paintEvent(QPaintEvent* event)
{
QWidget::paintEvent(event);
QPainter painter(this);
painter.setBrush(QColor(Qt::black));
painter.setPen(QColor(Qt::black));
painter.setFont(m_font);
QRect textRect(0, 0, geometry().width(), geometry().height());
painter.fillRect(textRect, QColor(Qt::white));
painter.drawText(textRect, m_alignment, m_text);
}
void PlotStatusLabel::onPlotDestroyed(QObject* obj)
{
if (auto* old_plot = dynamic_cast<MousyPlot*>(obj)) {
for (auto it = m_plots.begin(); it != m_plots.end(); ++it)
if (*it == old_plot)
m_plots.erase(it);
}
}
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