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Enable non-linear network traffic graph

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This commit is contained in:
R E Broadley 2021-11-15 15:22:05 +01:00
parent 8864a1f790
commit ad431ff5d1
2 changed files with 28 additions and 14 deletions
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40
src/qt/trafficgraphwidget.cpp
View File

@ -50,7 +50,7 @@ int TrafficGraphWidget::getGraphRangeMins() const
int TrafficGraphWidget::y_value(float value) int TrafficGraphWidget::y_value(float value)
{ {
int h = height() - YMARGIN * 2; int h = height() - YMARGIN * 2;
return YMARGIN + h - (h * 1.0 * value / fMax); return YMARGIN + h - (h * 1.0 * (fToggle ? (pow(value, 0.30102) / pow(fMax, 0.30102)) : (value / fMax)));
} }
void TrafficGraphWidget::paintPath(QPainterPath &path, QQueue<float> &samples) void TrafficGraphWidget::paintPath(QPainterPath &path, QQueue<float> &samples)
@ -69,6 +69,13 @@ void TrafficGraphWidget::paintPath(QPainterPath &path, QQueue<float> &samples)
} }
} }
void TrafficGraphWidget::mousePressEvent(QMouseEvent *event)
{
QWidget::mousePressEvent(event);
fToggle = !fToggle;
update();
}
void TrafficGraphWidget::paintEvent(QPaintEvent *) void TrafficGraphWidget::paintEvent(QPaintEvent *)
{ {
QPainter painter(this); QPainter painter(this);
@ -88,28 +95,33 @@ void TrafficGraphWidget::paintEvent(QPaintEvent *)
const QString units = tr("kB/s"); const QString units = tr("kB/s");
const float yMarginText = 2.0; const float yMarginText = 2.0;
// draw lines // if we drew 10 or 3 fewer lines, break them up at the next lower order of magnitude
painter.setPen(axisCol); if(fMax / val <= (fToggle ? 10.0f : 3.0f)) {
painter.drawText(XMARGIN, y_value(val)-yMarginText, QString("%1 %2").arg(val).arg(units)); float oldval = val;
for(float y = val; y < fMax; y += val) {
int yy = YMARGIN + h - h * y / fMax;
painter.drawLine(XMARGIN, yy, width() - XMARGIN, yy);
}
// if we drew 3 or fewer lines, break them up at the next lower order of magnitude
if(fMax / val <= 3.0f) {
axisCol = axisCol.darker();
val = pow(10.0f, base - 1); val = pow(10.0f, base - 1);
painter.setPen(axisCol); painter.setPen(axisCol.darker());
painter.drawText(XMARGIN, y_value(val)-yMarginText, QString("%1 %2").arg(val).arg(units)); painter.drawText(XMARGIN, y_value(val)-yMarginText, QString("%1 %2").arg(val).arg(units));
if (fToggle) {
int yy = y_value(val*0.1);
painter.drawText(XMARGIN, yy-yMarginText, QString("%1 %2").arg(val*0.1).arg(units));
painter.drawLine(XMARGIN, yy, width() - XMARGIN, yy);
}
int count = 1; int count = 1;
for(float y = val; y < fMax; y += val, count++) { for(float y = val; y < (!fToggle || fMax / val < 20 ? fMax : oldval); y += val, count++) {
// don't overwrite lines drawn above
if(count % 10 == 0) if(count % 10 == 0)
continue; continue;
int yy = y_value(y); int yy = y_value(y);
painter.drawLine(XMARGIN, yy, width() - XMARGIN, yy); painter.drawLine(XMARGIN, yy, width() - XMARGIN, yy);
} }
val = oldval;
} }
// draw lines
painter.setPen(axisCol);
for(float y = val; y < fMax; y += val) {
int yy = y_value(y);
painter.drawLine(XMARGIN, yy, width() - XMARGIN, yy);
}
painter.drawText(XMARGIN, y_value(val)-yMarginText, QString("%1 %2").arg(val).arg(units));
painter.setRenderHint(QPainter::Antialiasing); painter.setRenderHint(QPainter::Antialiasing);
if(!vSamplesIn.empty()) { if(!vSamplesIn.empty()) {

2
src/qt/trafficgraphwidget.h
View File

@ -27,6 +27,8 @@ public:
protected: protected:
void paintEvent(QPaintEvent *) override; void paintEvent(QPaintEvent *) override;
int y_value(float value); int y_value(float value);
void mousePressEvent(QMouseEvent *event) override;
bool fToggle = true;
public Q_SLOTS: public Q_SLOTS:
void updateRates(); void updateRates();