Fix #719 by calculating the decoder trace height dynamically

diff --git a/pv/view/decodetrace.cpp b/pv/view/decodetrace.cpp
index 31ea9d73647f42ba7436753a305f267a235337d3..dd39b321b9d789208d1e341dec55260e67efd181 100644 (file)
--- a/pv/view/decodetrace.cpp
+++ b/pv/view/decodetrace.cpp
@@ -160,10 +160,10 @@ const std::shared_ptr<pv::data::DecoderStack>& DecodeTrace::decoder() const
 
 pair<int, int> DecodeTrace::v_extents() const
 {
-       /// @todo Replace this with an implementation that knows the true
-       /// height of the trace
        const int row_height = (ViewItemPaintParams::text_height() * 6) / 4;
-       return make_pair(-row_height / 2, row_height * 7 / 2);
+       const int rows = visible_rows_.size();
+
+       return make_pair(-row_height, row_height * rows);
 }
 
 void DecodeTrace::paint_back(QPainter &p, const ViewItemPaintParams &pp)