Fixed signal ends to cover screen

[pulseview.git] / logicsignal.cpp

diff --git a/logicsignal.cpp b/logicsignal.cpp
index 486c002d7a1ed1179e9979377a4195d15f816c76..79a27ddd05c97996cc6f7332b3b6b3a7ab4e4058 100644 (file)
--- a/logicsignal.cpp
+++ b/logicsignal.cpp
@@ -86,16 +86,16 @@ void LogicSignal::paint(QGLWidget &widget, const QRect &rect,
        const double pixels_offset = offset / scale;
        const double samplerate = _data->get_samplerate();
        const double start_time = _data->get_start_time();
-       const int64_t last_sample = (int64_t)snapshot->get_sample_count() - 1;
+       const int64_t last_sample = snapshot->get_sample_count() - 1;
        const double samples_per_pixel = samplerate * scale;
-       const int64_t start = min(max((int64_t)(samplerate * (offset - start_time)),
-               (int64_t)0), last_sample);
-       const int64_t end = min((int64_t)(start + samples_per_pixel * rect.width()),
-               last_sample);
+       const double start = samplerate * (offset - start_time);
+       const double end = start + samples_per_pixel * rect.width();
        const int64_t quantization_length = 1LL << (int64_t)floorf(
-               max(logf(samples_per_pixel / Log2), 0.0f));
+               max(logf((float)samples_per_pixel) / Log2, 0.0f));
 
-       snapshot->get_subsampled_edges(edges, start, end,
+       snapshot->get_subsampled_edges(edges,
+               min(max((int64_t)floor(start), (int64_t)0), last_sample),
+               min(max((int64_t)ceil(end), (int64_t)0), last_sample),
                quantization_length, _probe_index);
 
        // Paint the edges