AnalogSignal: Make sure the trace is redrawn when changing vdiv count

[pulseview.git] / pv / view / analogsignal.cpp

diff --git a/pv/view/analogsignal.cpp b/pv/view/analogsignal.cpp
index 7e5bcd11facdb6d1a81368c27fd866da1afc6ff9..9001924a687f4f301e63c4fcc1bec24aae4d7b69 100644 (file)
--- a/pv/view/analogsignal.cpp
+++ b/pv/view/analogsignal.cpp
@@ -58,8 +58,8 @@ const QColor AnalogSignal::SignalColours[4] = {
        QColor(0x4E, 0x9A, 0x06)        // Green
 };
 
-const QColor AnalogSignal::GridMajorColor = QColor(0xB0, 0xB0, 0xB0);
-const QColor AnalogSignal::GridMinorColor = QColor(0xD0, 0xD0, 0xD0);
+const QColor AnalogSignal::GridMajorColor = QColor(0, 0, 0, 40*256/100);
+const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20*256/100);
 
 const float AnalogSignal::EnvelopeThreshold = 256.0f;
 
@@ -200,16 +200,18 @@ void AnalogSignal::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
 
 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
 {
-       p.setPen(QPen(GridMajorColor, 0.5, Qt::DashLine));
+       p.setRenderHint(QPainter::Antialiasing, false);
+
+       p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
        for (int i = 1; i <= vdivs_; i++) {
-               const int dy = i * div_height_;
+               const float dy = i * div_height_;
                p.drawLine(QLineF(left, y - dy, right, y - dy));
                p.drawLine(QLineF(left, y + dy, right, y + dy));
        }
 
-       p.setPen(QPen(GridMinorColor, 0.5, Qt::DashLine));
+       p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
        for (int i = 0; i < vdivs_; i++) {
-               const int dy = i * div_height_;
+               const float dy = i * div_height_;
                const float dy25 = dy + (0.25 * div_height_);
                const float dy50 = dy + (0.50 * div_height_);
                const float dy75 = dy + (0.75 * div_height_);
@@ -220,6 +222,8 @@ void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
                p.drawLine(QLineF(left, y - dy75, right, y - dy75));
                p.drawLine(QLineF(left, y + dy75, right, y + dy75));
        }
+
+       p.setRenderHint(QPainter::Antialiasing, true);
 }
 
 void AnalogSignal::paint_trace(QPainter &p,
@@ -356,8 +360,11 @@ void AnalogSignal::on_vdivs_changed(int vdivs)
 {
        vdivs_ = vdivs;
 
-       if (owner_)
+       if (owner_) {
+               // Call order is important, otherwise the lazy event handler won't work
                owner_->extents_changed(false, true);
+               owner_->row_item_appearance_changed(false, true);
+       }
 }
 
 void AnalogSignal::on_resolution_changed(int index)