Implement binary class selector

[pulseview.git] / pv / views / decoder_output / QHexView.cpp

diff --git a/pv/views/decoder_output/QHexView.cpp b/pv/views/decoder_output/QHexView.cpp
index 2289a07d509fd6bff90d5360b42b4a67a42df9ab..586a5cdac373da49b36515b1903349c7500e1d5a 100644 (file)
--- a/pv/views/decoder_output/QHexView.cpp
+++ b/pv/views/decoder_output/QHexView.cpp
@@ -69,6 +69,8 @@ void QHexView::setData(QByteArray *data)
        data_ = data;
        cursorPos_ = 0;
        resetSelection(0);
+
+       viewport()->update();
 }
 
 void QHexView::showFromOffset(size_t offset)
@@ -79,12 +81,16 @@ void QHexView::showFromOffset(size_t offset)
                int cursorY = cursorPos_ / (2 * BYTES_PER_LINE);
                verticalScrollBar() -> setValue(cursorY);
        }
+
+       viewport()->update();
 }
 
 void QHexView::clear()
 {
        verticalScrollBar()->setValue(0);
        data_ = nullptr;
+
+       viewport()->update();
 }
 
 QSize QHexView::getFullSize() const
@@ -121,7 +127,7 @@ void QHexView::paintEvent(QPaintEvent *event)
        // Fill widget background
        painter.fillRect(event->rect(), palette().color(QPalette::Base));
 
-       if (!data_) {
+       if (!data_ || (data_->size() == 0)) {
                painter.setPen(palette().color(QPalette::Text));
                QString s = tr("No data available");
                int x = (areaSize.width() - fontMetrics().boundingRect(s).width()) / 2;