VisualizationCursorItem.cpp
163 lines
| 5.7 KiB
| text/x-c
|
CppLexer
| r960 | #include <Common/DateUtils.h> | |||
| #include <Visualization/VisualizationCursorItem.h> | ||||
| #include <Visualization/qcustomplot.h> | ||||
| /// Width of the cursor in pixel | ||||
| const auto CURSOR_WIDTH = 3; | ||||
| /// Color of the cursor in the graph | ||||
| const auto CURSOR_COLOR = QColor{68, 114, 196}; | ||||
| /// Line style of the cursor in the graph | ||||
| auto CURSOR_PEN_STYLE = Qt::DotLine; | ||||
| struct VisualizationCursorItem::VisualizationCursorItemPrivate { | ||||
| QCustomPlot *m_Plot = nullptr; | ||||
| QCPItemStraightLine *m_LineItem = nullptr; | ||||
| QCPItemText *m_LabelItem = nullptr; | ||||
| Qt::Orientation m_Orientation; | ||||
| double m_Position = 0.0; | ||||
| bool m_IsAbsolutePosition = false; | ||||
| QString m_LabelText; | ||||
| explicit VisualizationCursorItemPrivate(QCustomPlot *plot) | ||||
| : m_Plot(plot), m_Orientation(Qt::Vertical) | ||||
| { | ||||
| } | ||||
| void updateOrientation() | ||||
| { | ||||
| if (m_LineItem) { | ||||
| switch (m_Orientation) { | ||||
| case Qt::Vertical: | ||||
| m_LineItem->point1->setTypeX(m_IsAbsolutePosition | ||||
| ? QCPItemPosition::ptAbsolute | ||||
| : QCPItemPosition::ptPlotCoords); | ||||
| m_LineItem->point1->setTypeY(QCPItemPosition::ptAxisRectRatio); | ||||
| m_LineItem->point2->setTypeX(m_IsAbsolutePosition | ||||
| ? QCPItemPosition::ptAbsolute | ||||
| : QCPItemPosition::ptPlotCoords); | ||||
| m_LineItem->point2->setTypeY(QCPItemPosition::ptAxisRectRatio); | ||||
| m_LabelItem->setPositionAlignment(Qt::AlignLeft | Qt::AlignTop); | ||||
| break; | ||||
| case Qt::Horizontal: | ||||
| m_LineItem->point1->setTypeX(QCPItemPosition::ptAxisRectRatio); | ||||
| m_LineItem->point1->setTypeY(m_IsAbsolutePosition | ||||
| ? QCPItemPosition::ptAbsolute | ||||
| : QCPItemPosition::ptPlotCoords); | ||||
| m_LineItem->point2->setTypeX(QCPItemPosition::ptAxisRectRatio); | ||||
| m_LineItem->point2->setTypeY(m_IsAbsolutePosition | ||||
| ? QCPItemPosition::ptAbsolute | ||||
| : QCPItemPosition::ptPlotCoords); | ||||
| m_LabelItem->setPositionAlignment(Qt::AlignRight | Qt::AlignBottom); | ||||
| } | ||||
| } | ||||
| } | ||||
| void updateCursorPosition() | ||||
| { | ||||
| if (m_LineItem) { | ||||
| switch (m_Orientation) { | ||||
| case Qt::Vertical: | ||||
| m_LineItem->point1->setCoords(m_Position, 0); | ||||
| m_LineItem->point2->setCoords(m_Position, 1); | ||||
| m_LabelItem->position->setCoords(5, 5); | ||||
| break; | ||||
| case Qt::Horizontal: | ||||
| m_LineItem->point1->setCoords(1, m_Position); | ||||
| m_LineItem->point2->setCoords(0, m_Position); | ||||
| m_LabelItem->position->setCoords(-5, -5); | ||||
| } | ||||
| } | ||||
| } | ||||
| void updateLabelText() | ||||
| { | ||||
| if (m_LabelItem) { | ||||
| m_LabelItem->setText(m_LabelText); | ||||
| } | ||||
| } | ||||
| }; | ||||
| VisualizationCursorItem::VisualizationCursorItem(QCustomPlot *plot) | ||||
| : impl{spimpl::make_unique_impl<VisualizationCursorItemPrivate>(plot)} | ||||
| { | ||||
| } | ||||
| void VisualizationCursorItem::setVisible(bool value) | ||||
| { | ||||
| if (value != isVisible()) { | ||||
| if (value) { | ||||
| Q_ASSERT(!impl->m_LineItem && !impl->m_Plot); | ||||
| impl->m_LineItem = new QCPItemStraightLine{impl->m_Plot}; | ||||
| auto pen = QPen{CURSOR_PEN_STYLE}; | ||||
| pen.setColor(CURSOR_COLOR); | ||||
| pen.setWidth(CURSOR_WIDTH); | ||||
| impl->m_LineItem->setPen(pen); | ||||
| impl->m_LineItem->setSelectable(false); | ||||
| impl->m_LabelItem = new QCPItemText{impl->m_Plot}; | ||||
| impl->m_LabelItem->setColor(CURSOR_COLOR); | ||||
| impl->m_LabelItem->setSelectable(false); | ||||
| impl->m_LabelItem->position->setParentAnchor(impl->m_LineItem->point1); | ||||
| impl->m_LabelItem->position->setTypeX(QCPItemPosition::ptAbsolute); | ||||
| impl->m_LabelItem->position->setTypeY(QCPItemPosition::ptAbsolute); | ||||
| auto font = impl->m_LabelItem->font(); | ||||
| font.setPointSize(10); | ||||
| font.setBold(true); | ||||
| impl->m_LabelItem->setFont(font); | ||||
| impl->updateOrientation(); | ||||
| impl->updateLabelText(); | ||||
| impl->updateCursorPosition(); | ||||
| } | ||||
| else { | ||||
| Q_ASSERT(impl->m_LineItem && impl->m_Plot); | ||||
| // Note: the items are destroyed by QCustomPlot in removeItem | ||||
| impl->m_Plot->removeItem(impl->m_LineItem); | ||||
| impl->m_LineItem = nullptr; | ||||
| impl->m_Plot->removeItem(impl->m_LabelItem); | ||||
| impl->m_LabelItem = nullptr; | ||||
| } | ||||
| } | ||||
| } | ||||
| bool VisualizationCursorItem::isVisible() const | ||||
| { | ||||
| return impl->m_LineItem != nullptr; | ||||
| } | ||||
| void VisualizationCursorItem::setPosition(double value) | ||||
| { | ||||
| impl->m_Position = value; | ||||
| impl->m_IsAbsolutePosition = false; | ||||
| impl->updateLabelText(); | ||||
| impl->updateCursorPosition(); | ||||
| } | ||||
| void VisualizationCursorItem::setAbsolutePosition(double value) | ||||
| { | ||||
| setPosition(value); | ||||
| impl->m_IsAbsolutePosition = true; | ||||
| } | ||||
| void VisualizationCursorItem::setOrientation(Qt::Orientation orientation) | ||||
| { | ||||
| impl->m_Orientation = orientation; | ||||
| impl->updateLabelText(); | ||||
| impl->updateOrientation(); | ||||
| impl->updateCursorPosition(); | ||||
| } | ||||
| void VisualizationCursorItem::setLabelText(const QString &text) | ||||
| { | ||||
| impl->m_LabelText = text; | ||||
| impl->updateLabelText(); | ||||
| } | ||||
