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Corrects the problem of refreshing synchronized graphs from TimeWidget (1)...
Corrects the problem of refreshing synchronized graphs from TimeWidget (1) Introduces graph flags to set options for the widget
trabillard - - Load All Authors

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r975:de303a265a7e
r1271:87a145505c37
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VisualizationCursorItem.cpp
163 lines | 5.7 KiB | text/x-c | CppLexer
/ gui / src / Visualization / VisualizationCursorItem.cpp
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trabillard
Implements cursor mode
 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) {
trabillard
fix a crash with the cursor in debug
 r975 Q_ASSERT(!impl->m_LineItem && !impl->m_LabelItem);
trabillard
Implements cursor mode
 r960
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 {
trabillard
fix a crash with the cursor in debug
 r975 Q_ASSERT(impl->m_LineItem && impl->m_LabelItem);
trabillard
Implements cursor mode
 r960
// 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();
}