GIT_REPOSITORIES/LPP/Users/mperrinel/SciQLop-fork Commit - r1065:2ecd8b335419

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#include "Visualization/VisualizationGraphRenderingDelegate.h"

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#include "Visualization/VisualizationGraphRenderingDelegate.h"

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#include "Visualization/AxisRenderingUtils.h"

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#include "Visualization/AxisRenderingUtils.h"

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#include "Visualization/ColorScaleEditor.h"

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#include "Visualization/ColorScaleEditor.h"

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#include "Visualization/PlottablesRenderingUtils.h"

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#include "Visualization/PlottablesRenderingUtils.h"

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#include "Visualization/SqpColorScale.h"

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#include "Visualization/SqpColorScale.h"

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#include "Visualization/VisualizationGraphWidget.h"

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#include "Visualization/VisualizationGraphWidget.h"

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#include "Visualization/qcustomplot.h"

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#include "Visualization/qcustomplot.h"

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#include <Common/DateUtils.h>

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#include <Common/DateUtils.h>

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#include <Data/IDataSeries.h>

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#include <Data/IDataSeries.h>

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#include <SqpApplication.h>

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#include <SqpApplication.h>

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namespace {

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namespace {

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/// Name of the axes layer in QCustomPlot

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/// Name of the axes layer in QCustomPlot

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const auto AXES_LAYER = QStringLiteral("axes");

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const auto AXES_LAYER = QStringLiteral("axes");

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/// Icon used to show x-axis properties

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/// Icon used to show x-axis properties

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const auto HIDE_AXIS_ICON_PATH = QStringLiteral(":/icones/down.png");

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const auto HIDE_AXIS_ICON_PATH = QStringLiteral(":/icones/down.png");

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/// Name of the overlay layer in QCustomPlot

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/// Name of the overlay layer in QCustomPlot

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const auto OVERLAY_LAYER = QStringLiteral("overlay");

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const auto OVERLAY_LAYER = QStringLiteral("overlay");

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/// Pixmap used to show x-axis properties

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/// Pixmap used to show x-axis properties

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const auto SHOW_AXIS_ICON_PATH = QStringLiteral(":/icones/up.png");

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const auto SHOW_AXIS_ICON_PATH = QStringLiteral(":/icones/up.png");

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const auto TOOLTIP_FORMAT = QStringLiteral("key: %1\nvalue: %2");

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/// Tooltip format for graphs

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const auto GRAPH_TOOLTIP_FORMAT = QStringLiteral("key: %1\nvalue: %2");

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/// Offset used to shift the tooltip of the mouse

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/// Offset used to shift the tooltip of the mouse

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const auto TOOLTIP_OFFSET = QPoint{20, 20};

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const auto TOOLTIP_OFFSET = QPoint{20, 20};

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/// Tooltip display rectangle (the tooltip is hidden when the mouse leaves this rectangle)

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/// Tooltip display rectangle (the tooltip is hidden when the mouse leaves this rectangle)

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const auto TOOLTIP_RECT = QRect{10, 10, 10, 10};

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const auto TOOLTIP_RECT = QRect{10, 10, 10, 10};

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/// Timeout after which the tooltip is displayed

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/// Timeout after which the tooltip is displayed

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const auto TOOLTIP_TIMEOUT = 500;

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const auto TOOLTIP_TIMEOUT = 500;

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void initPointTracerStyle(QCPItemTracer &tracer) noexcept

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void initPointTracerStyle(QCPItemTracer &tracer) noexcept

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{

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{

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tracer.setInterpolating(false);

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tracer.setInterpolating(false);

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tracer.setStyle(QCPItemTracer::tsCircle);

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tracer.setStyle(QCPItemTracer::tsCircle);

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tracer.setSize(3);

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tracer.setSize(3);

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tracer.setPen(QPen(Qt::black));

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tracer.setPen(QPen(Qt::black));

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tracer.setBrush(Qt::black);

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tracer.setBrush(Qt::black);

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}

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}

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QPixmap pixmap(const QString &iconPath) noexcept

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QPixmap pixmap(const QString &iconPath) noexcept

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{

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{

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return QIcon{iconPath}.pixmap(QSize{16, 16});

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return QIcon{iconPath}.pixmap(QSize{16, 16});

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}

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}

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void initClosePixmapStyle(QCPItemPixmap &pixmap) noexcept

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void initClosePixmapStyle(QCPItemPixmap &pixmap) noexcept

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{

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{

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// Icon

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// Icon

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pixmap.setPixmap(

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pixmap.setPixmap(

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sqpApp->style()->standardIcon(QStyle::SP_TitleBarCloseButton).pixmap(QSize{16, 16}));

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sqpApp->style()->standardIcon(QStyle::SP_TitleBarCloseButton).pixmap(QSize{16, 16}));

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// Position

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// Position

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pixmap.topLeft->setType(QCPItemPosition::ptAxisRectRatio);

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pixmap.topLeft->setType(QCPItemPosition::ptAxisRectRatio);

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pixmap.topLeft->setCoords(1, 0);

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pixmap.topLeft->setCoords(1, 0);

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pixmap.setClipToAxisRect(false);

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pixmap.setClipToAxisRect(false);

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// Can be selected

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// Can be selected

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pixmap.setSelectable(true);

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pixmap.setSelectable(true);

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}

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}

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void initXAxisPixmapStyle(QCPItemPixmap &itemPixmap) noexcept

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void initXAxisPixmapStyle(QCPItemPixmap &itemPixmap) noexcept

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{

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{

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// Icon

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// Icon

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itemPixmap.setPixmap(pixmap(HIDE_AXIS_ICON_PATH));

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itemPixmap.setPixmap(pixmap(HIDE_AXIS_ICON_PATH));

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// Position

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// Position

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itemPixmap.topLeft->setType(QCPItemPosition::ptAxisRectRatio);

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itemPixmap.topLeft->setType(QCPItemPosition::ptAxisRectRatio);

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itemPixmap.topLeft->setCoords(0, 1);

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itemPixmap.topLeft->setCoords(0, 1);

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itemPixmap.setClipToAxisRect(false);

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itemPixmap.setClipToAxisRect(false);

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// Can be selected

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// Can be selected

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itemPixmap.setSelectable(true);

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itemPixmap.setSelectable(true);

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}

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}

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void initTitleTextStyle(QCPItemText &text) noexcept

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void initTitleTextStyle(QCPItemText &text) noexcept

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{

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{

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// Font and background styles

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// Font and background styles

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text.setColor(Qt::gray);

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text.setColor(Qt::gray);

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text.setBrush(Qt::white);

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text.setBrush(Qt::white);

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// Position

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// Position

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text.setPositionAlignment(Qt::AlignTop | Qt::AlignLeft);

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text.setPositionAlignment(Qt::AlignTop | Qt::AlignLeft);

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text.position->setType(QCPItemPosition::ptAxisRectRatio);

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text.position->setType(QCPItemPosition::ptAxisRectRatio);

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text.position->setCoords(0.5, 0);

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text.position->setCoords(0.5, 0);

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}

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}

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} // namespace

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} // namespace

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struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate {

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struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate {

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explicit VisualizationGraphRenderingDelegatePrivate(VisualizationGraphWidget &graphWidget)

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explicit VisualizationGraphRenderingDelegatePrivate(VisualizationGraphWidget &graphWidget)

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: m_Plot{graphWidget.plot()},

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: m_Plot{graphWidget.plot()},

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m_PointTracer{new QCPItemTracer{&m_Plot}},

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m_PointTracer{new QCPItemTracer{&m_Plot}},

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m_TracerTimer{},

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m_TracerTimer{},

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m_ClosePixmap{new QCPItemPixmap{&m_Plot}},

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m_ClosePixmap{new QCPItemPixmap{&m_Plot}},

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m_TitleText{new QCPItemText{&m_Plot}},

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m_TitleText{new QCPItemText{&m_Plot}},

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m_XAxisPixmap{new QCPItemPixmap{&m_Plot}},

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m_XAxisPixmap{new QCPItemPixmap{&m_Plot}},

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m_ShowXAxis{true},

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m_ShowXAxis{true},

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m_XAxisLabel{},

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m_XAxisLabel{},

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m_ColorScale{SqpColorScale{m_Plot}}

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m_ColorScale{SqpColorScale{m_Plot}}

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{

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{

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initPointTracerStyle(*m_PointTracer);

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initPointTracerStyle(*m_PointTracer);

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m_TracerTimer.setInterval(TOOLTIP_TIMEOUT);

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m_TracerTimer.setInterval(TOOLTIP_TIMEOUT);

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m_TracerTimer.setSingleShot(true);

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m_TracerTimer.setSingleShot(true);

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// Inits "close button" in plot overlay

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// Inits "close button" in plot overlay

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m_ClosePixmap->setLayer(OVERLAY_LAYER);

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m_ClosePixmap->setLayer(OVERLAY_LAYER);

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initClosePixmapStyle(*m_ClosePixmap);

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initClosePixmapStyle(*m_ClosePixmap);

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// Connects pixmap selection to graph widget closing

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// Connects pixmap selection to graph widget closing

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QObject::connect(m_ClosePixmap, &QCPItemPixmap::selectionChanged,

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QObject::connect(m_ClosePixmap, &QCPItemPixmap::selectionChanged,

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[&graphWidget](bool selected) {

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[&graphWidget](bool selected) {

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if (selected) {

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if (selected) {

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graphWidget.close();

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graphWidget.close();

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}

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}

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});

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});

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// Inits graph name in plot overlay

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// Inits graph name in plot overlay

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m_TitleText->setLayer(OVERLAY_LAYER);

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m_TitleText->setLayer(OVERLAY_LAYER);

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m_TitleText->setText(graphWidget.name());

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m_TitleText->setText(graphWidget.name());

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initTitleTextStyle(*m_TitleText);

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initTitleTextStyle(*m_TitleText);

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// Inits "show x-axis button" in plot overlay

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// Inits "show x-axis button" in plot overlay

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m_XAxisPixmap->setLayer(OVERLAY_LAYER);

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m_XAxisPixmap->setLayer(OVERLAY_LAYER);

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initXAxisPixmapStyle(*m_XAxisPixmap);

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initXAxisPixmapStyle(*m_XAxisPixmap);

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// Connects pixmap selection to graph x-axis showing/hiding

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// Connects pixmap selection to graph x-axis showing/hiding

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QObject::connect(m_XAxisPixmap, &QCPItemPixmap::selectionChanged, [this]() {

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QObject::connect(m_XAxisPixmap, &QCPItemPixmap::selectionChanged, [this]() {

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if (m_XAxisPixmap->selected()) {

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if (m_XAxisPixmap->selected()) {

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// Changes the selection state and refreshes the x-axis

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// Changes the selection state and refreshes the x-axis

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m_ShowXAxis = !m_ShowXAxis;

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m_ShowXAxis = !m_ShowXAxis;

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updateXAxisState();

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updateXAxisState();

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m_Plot.layer(AXES_LAYER)->replot();

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m_Plot.layer(AXES_LAYER)->replot();

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// Deselects the x-axis pixmap and updates icon

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// Deselects the x-axis pixmap and updates icon

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m_XAxisPixmap->setSelected(false);

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m_XAxisPixmap->setSelected(false);

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m_XAxisPixmap->setPixmap(

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m_XAxisPixmap->setPixmap(

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pixmap(m_ShowXAxis ? HIDE_AXIS_ICON_PATH : SHOW_AXIS_ICON_PATH));

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pixmap(m_ShowXAxis ? HIDE_AXIS_ICON_PATH : SHOW_AXIS_ICON_PATH));

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m_Plot.layer(OVERLAY_LAYER)->replot();

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m_Plot.layer(OVERLAY_LAYER)->replot();

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}

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}

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});

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});

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}

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}

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/// Updates state of x-axis according to the current selection of x-axis pixmap

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/// Updates state of x-axis according to the current selection of x-axis pixmap

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/// @remarks the method doesn't call plot refresh

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/// @remarks the method doesn't call plot refresh

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void updateXAxisState() noexcept

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void updateXAxisState() noexcept

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{

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{

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m_Plot.xAxis->setTickLabels(m_ShowXAxis);

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m_Plot.xAxis->setTickLabels(m_ShowXAxis);

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m_Plot.xAxis->setLabel(m_ShowXAxis ? m_XAxisLabel : QString{});

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m_Plot.xAxis->setLabel(m_ShowXAxis ? m_XAxisLabel : QString{});

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}

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}

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QCustomPlot &m_Plot;

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QCustomPlot &m_Plot;

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QCPItemTracer *m_PointTracer;

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QCPItemTracer *m_PointTracer;

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QTimer m_TracerTimer;

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QTimer m_TracerTimer;

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QCPItemPixmap *m_ClosePixmap; /// Graph's close button

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QCPItemPixmap *m_ClosePixmap; /// Graph's close button

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QCPItemText *m_TitleText; /// Graph's title

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QCPItemText *m_TitleText; /// Graph's title

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QCPItemPixmap *m_XAxisPixmap;

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QCPItemPixmap *m_XAxisPixmap;

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bool m_ShowXAxis; /// X-axis properties are shown or hidden

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bool m_ShowXAxis; /// X-axis properties are shown or hidden

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QString m_XAxisLabel;

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QString m_XAxisLabel;

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SqpColorScale m_ColorScale; /// Color scale used for some types of graphs (as spectrograms)

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SqpColorScale m_ColorScale; /// Color scale used for some types of graphs (as spectrograms)

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};

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};

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VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(

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VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(

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VisualizationGraphWidget &graphWidget)

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VisualizationGraphWidget &graphWidget)

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: impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(graphWidget)}

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: impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(graphWidget)}

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{

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{

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}

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}

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void VisualizationGraphRenderingDelegate::onMouseDoubleClick(QMouseEvent *event) noexcept

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void VisualizationGraphRenderingDelegate::onMouseDoubleClick(QMouseEvent *event) noexcept

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{

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{

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// Opens color scale editor if color scale is double clicked

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// Opens color scale editor if color scale is double clicked

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auto colorScale = dynamic_cast<QCPColorScale *>(impl->m_Plot.layoutElementAt(event->pos()));

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auto colorScale = dynamic_cast<QCPColorScale *>(impl->m_Plot.layoutElementAt(event->pos()));

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if (impl->m_ColorScale.m_Scale == colorScale) {

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if (impl->m_ColorScale.m_Scale == colorScale) {

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if (ColorScaleEditor{impl->m_ColorScale}.exec() == QDialog::Accepted) {

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if (ColorScaleEditor{impl->m_ColorScale}.exec() == QDialog::Accepted) {

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impl->m_Plot.replot();

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impl->m_Plot.replot();

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}

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}

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}

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}

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}

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}

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void VisualizationGraphRenderingDelegate::onMouseMove(QMouseEvent *event) noexcept

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void VisualizationGraphRenderingDelegate::onMouseMove(QMouseEvent *event) noexcept

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{

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{

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// Cancels pending refresh

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// Cancels pending refresh

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impl->m_TracerTimer.disconnect();

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impl->m_TracerTimer.disconnect();

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// Reinits tracers

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// Reinits tracers

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impl->m_PointTracer->setGraph(nullptr);

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impl->m_PointTracer->setGraph(nullptr);

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impl->m_PointTracer->setVisible(false);

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impl->m_PointTracer->setVisible(false);

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impl->m_Plot.replot();

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impl->m_Plot.replot();

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QString tooltip{};

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// Gets the graph under the mouse position

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// Gets the graph under the mouse position

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auto eventPos = event->pos();

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auto eventPos = event->pos();

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if (auto graph = qobject_cast<QCPGraph *>(impl->m_Plot.plottableAt(eventPos))) {

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if (auto graph = qobject_cast<QCPGraph *>(impl->m_Plot.plottableAt(eventPos))) {

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auto mouseKey = graph->keyAxis()->pixelToCoord(eventPos.x());

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auto mouseKey = graph->keyAxis()->pixelToCoord(eventPos.x());

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auto graphData = graph->data();

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auto graphData = graph->data();

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// Gets the closest data point to the mouse

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// Gets the closest data point to the mouse

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auto graphDataIt = graphData->findBegin(mouseKey);

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auto graphDataIt = graphData->findBegin(mouseKey);

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if (graphDataIt != graphData->constEnd()) {

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if (graphDataIt != graphData->constEnd()) {

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// Sets tooltip

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auto key = formatValue(graphDataIt->key, *graph->keyAxis());

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auto key = formatValue(graphDataIt->key, *graph->keyAxis());

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auto value = formatValue(graphDataIt->value, *graph->valueAxis());

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auto value = formatValue(graphDataIt->value, *graph->valueAxis());

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tooltip = GRAPH_TOOLTIP_FORMAT.arg(key, value);

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// Displays point tracer

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// Displays point tracer

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impl->m_PointTracer->setGraph(graph);

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impl->m_PointTracer->setGraph(graph);

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impl->m_PointTracer->setGraphKey(graphDataIt->key);

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impl->m_PointTracer->setGraphKey(graphDataIt->key);

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impl->m_PointTracer->setLayer(

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impl->m_PointTracer->setLayer(

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impl->m_Plot.layer("main")); // Tracer is set on top of the plot's main layer

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impl->m_Plot.layer("main")); // Tracer is set on top of the plot's main layer

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impl->m_PointTracer->setVisible(true);

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impl->m_PointTracer->setVisible(true);

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impl->m_Plot.replot();

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impl->m_Plot.replot();

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}

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}

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else if (auto colorMap = qobject_cast<QCPColorMap *>(impl->m_Plot.plottableAt(eventPos))) {

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/// @todo

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tooltip = "TODO";

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}

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// Starts timer to show tooltip after timeout

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if (!tooltip.isEmpty()) {

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auto showTooltip = [ tooltip = TOOLTIP_FORMAT.arg(key, value), eventPos, this ]()

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// Starts timer to show tooltip after timeout

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{

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auto showTooltip = [tooltip, eventPos, this]() {

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QToolTip::showText(impl->m_Plot.mapToGlobal(eventPos) + TOOLTIP_OFFSET, tooltip,

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QToolTip::showText(impl->m_Plot.mapToGlobal(eventPos) + TOOLTIP_OFFSET, tooltip,

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&impl->m_Plot, TOOLTIP_RECT);

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&impl->m_Plot, TOOLTIP_RECT);

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};

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};

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QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTooltip);

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QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTooltip);

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impl->m_TracerTimer.start();

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impl->m_TracerTimer.start();

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}

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}

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}

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}

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}

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void VisualizationGraphRenderingDelegate::onPlotUpdated() noexcept

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void VisualizationGraphRenderingDelegate::onPlotUpdated() noexcept

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{

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{

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// Updates color scale bounds

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// Updates color scale bounds

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impl->m_ColorScale.updateDataRange();

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impl->m_ColorScale.updateDataRange();

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impl->m_Plot.replot();

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impl->m_Plot.replot();

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}

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}

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void VisualizationGraphRenderingDelegate::setAxesProperties(

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void VisualizationGraphRenderingDelegate::setAxesProperties(

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std::shared_ptr<IDataSeries> dataSeries) noexcept

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std::shared_ptr<IDataSeries> dataSeries) noexcept

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{

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{

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// Stores x-axis label to be able to retrieve it when x-axis pixmap is unselected

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// Stores x-axis label to be able to retrieve it when x-axis pixmap is unselected

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impl->m_XAxisLabel = dataSeries->xAxisUnit().m_Name;

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impl->m_XAxisLabel = dataSeries->xAxisUnit().m_Name;

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auto axisHelper = IAxisHelperFactory::create(dataSeries);

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auto axisHelper = IAxisHelperFactory::create(dataSeries);

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axisHelper->setProperties(impl->m_Plot, impl->m_ColorScale);

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axisHelper->setProperties(impl->m_Plot, impl->m_ColorScale);

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// Updates x-axis state

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// Updates x-axis state

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impl->updateXAxisState();

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impl->updateXAxisState();

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impl->m_Plot.layer(AXES_LAYER)->replot();

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impl->m_Plot.layer(AXES_LAYER)->replot();

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}

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}

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void VisualizationGraphRenderingDelegate::setPlottablesProperties(

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void VisualizationGraphRenderingDelegate::setPlottablesProperties(

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std::shared_ptr<IDataSeries> dataSeries, PlottablesMap &plottables) noexcept

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std::shared_ptr<IDataSeries> dataSeries, PlottablesMap &plottables) noexcept

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{

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{

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auto plottablesHelper = IPlottablesHelperFactory::create(dataSeries);

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auto plottablesHelper = IPlottablesHelperFactory::create(dataSeries);

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plottablesHelper->setProperties(plottables);

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plottablesHelper->setProperties(plottables);

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}

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}

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void VisualizationGraphRenderingDelegate::showGraphOverlay(bool show) noexcept

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void VisualizationGraphRenderingDelegate::showGraphOverlay(bool show) noexcept

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{

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{

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auto overlay = impl->m_Plot.layer(OVERLAY_LAYER);

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auto overlay = impl->m_Plot.layer(OVERLAY_LAYER);

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overlay->setVisible(show);

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overlay->setVisible(show);

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overlay->replot();

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overlay->replot();

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}

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}

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             #include "Visualization/VisualizationGraphRenderingDelegate.h"
             #include "Visualization/AxisRenderingUtils.h"
             #include "Visualization/ColorScaleEditor.h"
             #include "Visualization/PlottablesRenderingUtils.h"
             #include "Visualization/SqpColorScale.h"
             #include "Visualization/VisualizationGraphWidget.h"
             #include "Visualization/qcustomplot.h"
             #include <Common/DateUtils.h>
             #include <Data/IDataSeries.h>
             #include <SqpApplication.h>
             namespace {
             /// Name of the axes layer in QCustomPlot
             const auto AXES_LAYER = QStringLiteral("axes");
             /// Icon used to show x-axis properties
             const auto HIDE_AXIS_ICON_PATH = QStringLiteral(":/icones/down.png");
             /// Name of the overlay layer in QCustomPlot
             const auto OVERLAY_LAYER = QStringLiteral("overlay");
             /// Pixmap used to show x-axis properties
             const auto SHOW_AXIS_ICON_PATH = QStringLiteral(":/icones/up.png");
-            const auto TOOLTIP_FORMAT = QStringLiteral("key: %1\nvalue: %2");
+            /// Tooltip format for graphs
+            const auto GRAPH_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;
             void initPointTracerStyle(QCPItemTracer &tracer) noexcept
             {
                 tracer.setInterpolating(false);
                 tracer.setStyle(QCPItemTracer::tsCircle);
                 tracer.setSize(3);
                 tracer.setPen(QPen(Qt::black));
                 tracer.setBrush(Qt::black);
             }
             QPixmap pixmap(const QString &iconPath) noexcept
             {
                 return QIcon{iconPath}.pixmap(QSize{16, 16});
             }
             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 initXAxisPixmapStyle(QCPItemPixmap &itemPixmap) noexcept
             {
                 // Icon
                 itemPixmap.setPixmap(pixmap(HIDE_AXIS_ICON_PATH));
                 // Position
                 itemPixmap.topLeft->setType(QCPItemPosition::ptAxisRectRatio);
                 itemPixmap.topLeft->setCoords(0, 1);
                 itemPixmap.setClipToAxisRect(false);
                 // Can be selected
                 itemPixmap.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}},
                           m_XAxisPixmap{new QCPItemPixmap{&m_Plot}},
                           m_ShowXAxis{true},
                           m_XAxisLabel{},
                           m_ColorScale{SqpColorScale{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);
                     // Connects pixmap selection to graph widget closing
                     QObject::connect(m_ClosePixmap, &QCPItemPixmap::selectionChanged,
                                      [&graphWidget](bool selected) {
                                          if (selected) {
                                              graphWidget.close();
                                          }
                                      });
                     // Inits graph name in plot overlay
                     m_TitleText->setLayer(OVERLAY_LAYER);
                     m_TitleText->setText(graphWidget.name());
                     initTitleTextStyle(*m_TitleText);
                     // Inits "show x-axis button" in plot overlay
                     m_XAxisPixmap->setLayer(OVERLAY_LAYER);
                     initXAxisPixmapStyle(*m_XAxisPixmap);
                     // Connects pixmap selection to graph x-axis showing/hiding
                     QObject::connect(m_XAxisPixmap, &QCPItemPixmap::selectionChanged, [this]() {
                         if (m_XAxisPixmap->selected()) {
                             // Changes the selection state and refreshes the x-axis
                             m_ShowXAxis = !m_ShowXAxis;
                             updateXAxisState();
                             m_Plot.layer(AXES_LAYER)->replot();
                             // Deselects the x-axis pixmap and updates icon
                             m_XAxisPixmap->setSelected(false);
                             m_XAxisPixmap->setPixmap(
                                 pixmap(m_ShowXAxis ? HIDE_AXIS_ICON_PATH : SHOW_AXIS_ICON_PATH));
                             m_Plot.layer(OVERLAY_LAYER)->replot();
                         }
                     });
                 }
                 /// Updates state of x-axis according to the current selection of x-axis pixmap
                 /// @remarks the method doesn't call plot refresh
                 void updateXAxisState() noexcept
                 {
                     m_Plot.xAxis->setTickLabels(m_ShowXAxis);
                     m_Plot.xAxis->setLabel(m_ShowXAxis ? m_XAxisLabel : QString{});
                 }
                 QCustomPlot &m_Plot;
                 QCPItemTracer *m_PointTracer;
                 QTimer m_TracerTimer;
                 QCPItemPixmap *m_ClosePixmap; /// Graph's close button
                 QCPItemText *m_TitleText;     /// Graph's title
                 QCPItemPixmap *m_XAxisPixmap;
                 bool m_ShowXAxis; /// X-axis properties are shown or hidden
                 QString m_XAxisLabel;
                 SqpColorScale m_ColorScale; /// Color scale used for some types of graphs (as spectrograms)
             };
             VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(
                 VisualizationGraphWidget &graphWidget)
                     : impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(graphWidget)}
             {
             }
             void VisualizationGraphRenderingDelegate::onMouseDoubleClick(QMouseEvent *event) noexcept
             {
                 // Opens color scale editor if color scale is double clicked
                 auto colorScale = dynamic_cast<QCPColorScale *>(impl->m_Plot.layoutElementAt(event->pos()));
                 if (impl->m_ColorScale.m_Scale == colorScale) {
                     if (ColorScaleEditor{impl->m_ColorScale}.exec() == QDialog::Accepted) {
                         impl->m_Plot.replot();
                     }
                 }
             }
             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();
+                QString tooltip{};
                 // 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()) {
+                        // Sets tooltip
                         auto key = formatValue(graphDataIt->key, *graph->keyAxis());
                         auto value = formatValue(graphDataIt->value, *graph->valueAxis());
+                        tooltip = GRAPH_TOOLTIP_FORMAT.arg(key, value);
                         // 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();
+                    }
+                }
+                else if (auto colorMap = qobject_cast<QCPColorMap *>(impl->m_Plot.plottableAt(eventPos))) {
+                    /// @todo
+                    tooltip = "TODO";
+                }
-                        // Starts timer to show tooltip after timeout
+                if (!tooltip.isEmpty()) {
-                        auto showTooltip = [ tooltip = TOOLTIP_FORMAT.arg(key, value), eventPos, this ]()
+                    // Starts timer to show tooltip after timeout
+                    auto showTooltip = [tooltip, eventPos, this]() {
-                            QToolTip::showText(impl->m_Plot.mapToGlobal(eventPos) + TOOLTIP_OFFSET, tooltip,
+                        QToolTip::showText(impl->m_Plot.mapToGlobal(eventPos) + TOOLTIP_OFFSET, tooltip,
-                                               &impl->m_Plot, TOOLTIP_RECT);
+                                           &impl->m_Plot, TOOLTIP_RECT);
-                        };
+                    };
-                        QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTooltip);
+                    QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTooltip);
-                        impl->m_TracerTimer.start();
+                    impl->m_TracerTimer.start();
                 }
             }
             void VisualizationGraphRenderingDelegate::onPlotUpdated() noexcept
             {
                 // Updates color scale bounds
                 impl->m_ColorScale.updateDataRange();
                 impl->m_Plot.replot();
             }
             void VisualizationGraphRenderingDelegate::setAxesProperties(
                 std::shared_ptr<IDataSeries> dataSeries) noexcept
             {
                 // Stores x-axis label to be able to retrieve it when x-axis pixmap is unselected
                 impl->m_XAxisLabel = dataSeries->xAxisUnit().m_Name;
                 auto axisHelper = IAxisHelperFactory::create(dataSeries);
                 axisHelper->setProperties(impl->m_Plot, impl->m_ColorScale);
                 // Updates x-axis state
                 impl->updateXAxisState();
                 impl->m_Plot.layer(AXES_LAYER)->replot();
             }
             void VisualizationGraphRenderingDelegate::setPlottablesProperties(
                 std::shared_ptr<IDataSeries> dataSeries, PlottablesMap &plottables) noexcept
             {
                 auto plottablesHelper = IPlottablesHelperFactory::create(dataSeries);
                 plottablesHelper->setProperties(plottables);
             }
             void VisualizationGraphRenderingDelegate::showGraphOverlay(bool show) noexcept
             {
                 auto overlay = impl->m_Plot.layer(OVERLAY_LAYER);
                 overlay->setVisible(show);
                 overlay->replot();
             }