|
|
#include "Visualization/VisualizationGraphRenderingDelegate.h"
|
|
|
#include "Visualization/VisualizationGraphWidget.h"
|
|
|
#include "Visualization/qcustomplot.h"
|
|
|
|
|
|
#include <Common/DateUtils.h>
|
|
|
|
|
|
#include <SqpApplication.h>
|
|
|
|
|
|
namespace {
|
|
|
|
|
|
const auto DATETIME_FORMAT = QStringLiteral("yyyy/MM/dd hh:mm:ss:zzz");
|
|
|
|
|
|
/// Name of the overlay layer in QCustomPlot
|
|
|
const auto OVERLAY_LAYER = QStringLiteral("overlay");
|
|
|
|
|
|
const auto TOOLTIP_FORMAT = QStringLiteral("key: %1\nvalue: %2");
|
|
|
|
|
|
/// Offset used to shift the tooltip of the mouse
|
|
|
const auto TOOLTIP_OFFSET = QPoint{20, 20};
|
|
|
|
|
|
/// Tooltip display rectangle (the tooltip is hidden when the mouse leaves this rectangle)
|
|
|
const auto TOOLTIP_RECT = QRect{10, 10, 10, 10};
|
|
|
|
|
|
/// Timeout after which the tooltip is displayed
|
|
|
const auto TOOLTIP_TIMEOUT = 500;
|
|
|
|
|
|
/// Formats a data value according to the axis on which it is present
|
|
|
QString formatValue(double value, const QCPAxis &axis)
|
|
|
{
|
|
|
// If the axis is a time axis, formats the value as a date
|
|
|
if (auto axisTicker = qSharedPointerDynamicCast<QCPAxisTickerDateTime>(axis.ticker())) {
|
|
|
return DateUtils::dateTime(value, axisTicker->dateTimeSpec()).toString(DATETIME_FORMAT);
|
|
|
}
|
|
|
else {
|
|
|
return QString::number(value);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void initPointTracerStyle(QCPItemTracer &tracer) noexcept
|
|
|
{
|
|
|
tracer.setInterpolating(false);
|
|
|
tracer.setStyle(QCPItemTracer::tsCircle);
|
|
|
tracer.setSize(3);
|
|
|
tracer.setPen(QPen(Qt::black));
|
|
|
tracer.setBrush(Qt::black);
|
|
|
}
|
|
|
|
|
|
void initClosePixmapStyle(QCPItemPixmap &pixmap) noexcept
|
|
|
{
|
|
|
// Icon
|
|
|
pixmap.setPixmap(
|
|
|
sqpApp->style()->standardIcon(QStyle::SP_TitleBarCloseButton).pixmap(QSize{16, 16}));
|
|
|
|
|
|
// Position
|
|
|
pixmap.topLeft->setType(QCPItemPosition::ptAxisRectRatio);
|
|
|
pixmap.topLeft->setCoords(1, 0);
|
|
|
pixmap.setClipToAxisRect(false);
|
|
|
|
|
|
// Can be selected
|
|
|
pixmap.setSelectable(true);
|
|
|
}
|
|
|
|
|
|
void initTitleTextStyle(QCPItemText &text) noexcept
|
|
|
{
|
|
|
// Font and background styles
|
|
|
text.setColor(Qt::gray);
|
|
|
text.setBrush(Qt::white);
|
|
|
|
|
|
// Position
|
|
|
text.setPositionAlignment(Qt::AlignTop | Qt::AlignLeft);
|
|
|
text.position->setType(QCPItemPosition::ptAxisRectRatio);
|
|
|
text.position->setCoords(0.5, 0);
|
|
|
}
|
|
|
|
|
|
} // namespace
|
|
|
|
|
|
struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate {
|
|
|
explicit VisualizationGraphRenderingDelegatePrivate(VisualizationGraphWidget &graphWidget)
|
|
|
: m_Plot{graphWidget.plot()},
|
|
|
m_PointTracer{new QCPItemTracer{&m_Plot}},
|
|
|
m_TracerTimer{},
|
|
|
m_ClosePixmap{new QCPItemPixmap{&m_Plot}},
|
|
|
m_TitleText{new QCPItemText{&m_Plot}}
|
|
|
{
|
|
|
initPointTracerStyle(*m_PointTracer);
|
|
|
|
|
|
m_TracerTimer.setInterval(TOOLTIP_TIMEOUT);
|
|
|
m_TracerTimer.setSingleShot(true);
|
|
|
|
|
|
// Inits "close button" in plot overlay
|
|
|
m_ClosePixmap->setLayer(OVERLAY_LAYER);
|
|
|
initClosePixmapStyle(*m_ClosePixmap);
|
|
|
// Inits graph name in plot overlay
|
|
|
m_TitleText->setLayer(OVERLAY_LAYER);
|
|
|
m_TitleText->setText(graphWidget.name());
|
|
|
initTitleTextStyle(*m_TitleText);
|
|
|
}
|
|
|
|
|
|
QCustomPlot &m_Plot;
|
|
|
QCPItemTracer *m_PointTracer;
|
|
|
QTimer m_TracerTimer;
|
|
|
QCPItemPixmap *m_ClosePixmap; /// Graph's close button
|
|
|
QCPItemText *m_TitleText; /// Graph's title
|
|
|
};
|
|
|
|
|
|
VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(
|
|
|
VisualizationGraphWidget &graphWidget)
|
|
|
: impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(graphWidget)}
|
|
|
{
|
|
|
}
|
|
|
|
|
|
void VisualizationGraphRenderingDelegate::onMouseMove(QMouseEvent *event) noexcept
|
|
|
{
|
|
|
// Cancels pending refresh
|
|
|
impl->m_TracerTimer.disconnect();
|
|
|
|
|
|
// Reinits tracers
|
|
|
impl->m_PointTracer->setGraph(nullptr);
|
|
|
impl->m_PointTracer->setVisible(false);
|
|
|
impl->m_Plot.replot();
|
|
|
|
|
|
// Gets the graph under the mouse position
|
|
|
auto eventPos = event->pos();
|
|
|
if (auto graph = qobject_cast<QCPGraph *>(impl->m_Plot.plottableAt(eventPos))) {
|
|
|
auto mouseKey = graph->keyAxis()->pixelToCoord(eventPos.x());
|
|
|
auto graphData = graph->data();
|
|
|
|
|
|
// Gets the closest data point to the mouse
|
|
|
auto graphDataIt = graphData->findBegin(mouseKey);
|
|
|
if (graphDataIt != graphData->constEnd()) {
|
|
|
auto key = formatValue(graphDataIt->key, *graph->keyAxis());
|
|
|
auto value = formatValue(graphDataIt->value, *graph->valueAxis());
|
|
|
|
|
|
// Displays point tracer
|
|
|
impl->m_PointTracer->setGraph(graph);
|
|
|
impl->m_PointTracer->setGraphKey(graphDataIt->key);
|
|
|
impl->m_PointTracer->setLayer(
|
|
|
impl->m_Plot.layer("main")); // Tracer is set on top of the plot's main layer
|
|
|
impl->m_PointTracer->setVisible(true);
|
|
|
impl->m_Plot.replot();
|
|
|
|
|
|
// Starts timer to show tooltip after timeout
|
|
|
auto showTooltip = [ tooltip = TOOLTIP_FORMAT.arg(key, value), eventPos, this ]()
|
|
|
{
|
|
|
QToolTip::showText(impl->m_Plot.mapToGlobal(eventPos) + TOOLTIP_OFFSET, tooltip,
|
|
|
&impl->m_Plot, TOOLTIP_RECT);
|
|
|
};
|
|
|
|
|
|
QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTooltip);
|
|
|
impl->m_TracerTimer.start();
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
