X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Flogicsignal.cpp;h=717360b852fa65b9aedf5a513f578d47a45e1e40;hp=573d1b780645dd4304295f1543f66f0fb76f4835;hb=2220e94218298b208041c5e828595d9e1b842c88;hpb=214470fc17e73bbf4664f4c1678a7dd30c905bf2

diff --git a/pv/view/logicsignal.cpp b/pv/view/logicsignal.cpp
index 573d1b78..717360b8 100644
--- a/pv/view/logicsignal.cpp
+++ b/pv/view/logicsignal.cpp
@@ -25,6 +25,7 @@
 
 #include <algorithm>
 
+#include <QApplication>
 #include <QFormLayout>
 #include <QToolBar>
 
@@ -59,9 +60,6 @@ using sigrok::TriggerMatchType;
 namespace pv {
 namespace view {
 
-const int LogicSignal::SignalHeight = 30;
-const int LogicSignal::SignalMargin = 10;
-
 const float LogicSignal::Oversampling = 2.0f;
 
 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
@@ -103,6 +101,7 @@ LogicSignal::LogicSignal(
 	shared_ptr<Channel> channel,
 	shared_ptr<data::Logic> data) :
 	Signal(session, channel),
+	signal_height_(QFontMetrics(QApplication::font()).height() * 2),
 	device_(device),
 	data_(data),
 	trigger_none_(nullptr),
@@ -147,17 +146,21 @@ void LogicSignal::set_logic_data(std::shared_ptr<pv::data::Logic> data)
 
 std::pair<int, int> LogicSignal::v_extents() const
 {
-	return make_pair(-SignalHeight - SignalMargin, SignalMargin);
+	const int signal_margin =
+		QFontMetrics(QApplication::font()).height() / 2;
+	return make_pair(-signal_height_ - signal_margin, signal_margin);
 }
 
 int LogicSignal::scale_handle_offset() const
 {
-	return SignalHeight;
+	return -signal_height_;
 }
 
 void LogicSignal::scale_handle_dragged(int offset)
 {
-	(void)offset;
+	const int font_height = QFontMetrics(QApplication::font()).height();
+	const int units = (-offset / font_height);
+	signal_height_ = ((units < 1) ? 1 : units) * font_height;
 }
 
 void LogicSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
@@ -181,7 +184,7 @@ void LogicSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
 	if (!channel_->enabled())
 		return;
 
-	const float high_offset = y - SignalHeight + 0.5f;
+	const float high_offset = y - signal_height_ + 0.5f;
 	const float low_offset = y + 0.5f;
 
 	const deque< shared_ptr<pv::data::LogicSegment> > &segments =
@@ -268,7 +271,7 @@ void LogicSignal::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
 		const QSize size = pixmap->size();
 		const QPoint point(
 			pp.right() - size.width() - pad * 2,
-			y - (SignalHeight + size.height()) / 2);
+			y - (signal_height_ + size.height()) / 2);
 
 		p.setPen(QPen(TriggerMarkerBackgroundColour.darker()));
 		p.setBrush(TriggerMarkerBackgroundColour);