X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fdecodetrace.cpp;h=c2369e866fbe3b7286c602adc41735ed1c6a579b;hp=6bafa11e8c3a8d3ad2075fa0e7107fe51e073fdb;hb=a303c2d88f424fa7d548d74b335965ce29154166;hpb=4fb5fb99ba0453af3080e82e4f3e2f295a55616b

diff --git a/pv/view/decodetrace.cpp b/pv/view/decodetrace.cpp
index 6bafa11e..c2369e86 100644
--- a/pv/view/decodetrace.cpp
+++ b/pv/view/decodetrace.cpp
@@ -44,6 +44,7 @@ extern "C" {
 #include "decodetrace.hpp"
 
 #include <pv/session.hpp>
+#include <pv/strnatcmp.hpp>
 #include <pv/data/decoderstack.hpp>
 #include <pv/data/decode/decoder.hpp>
 #include <pv/data/logic.hpp>
@@ -140,6 +141,10 @@ DecodeTrace::DecodeTrace(pv::Session &session,
 {
 	assert(decoder_stack_);
 
+	// Determine shortest string we want to see displayed in full
+	QFontMetrics m(QApplication::font());
+	min_useful_label_width_ = m.width("XX"); // e.g. two hex characters
+
 	set_colour(DecodeColours[index % countof(DecodeColours)]);
 
 	connect(decoder_stack_.get(), SIGNAL(new_decode_data()),
@@ -164,7 +169,10 @@ pair<int, int> DecodeTrace::v_extents() const
 {
 	const int row_height = (ViewItemPaintParams::text_height() * 6) / 4;
 
-	return make_pair(-row_height, row_height * max_visible_rows_);
+	// Make an empty decode trace appear symmetrical
+	const int row_count = max(1, max_visible_rows_);
+
+	return make_pair(-row_height, row_height * row_count);
 }
 
 void DecodeTrace::paint_back(QPainter &p, const ViewItemPaintParams &pp)
@@ -190,6 +198,9 @@ void DecodeTrace::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
 		return;
 	}
 
+	// Set default pen to allow for text width calculation
+	p.setPen(Qt::black);
+
 	// Iterate through the rows
 	int y = get_visual_y();
 	pair<uint64_t, uint64_t> sample_range = get_sample_range(
@@ -234,6 +245,9 @@ void DecodeTrace::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
 	// Draw the hatching
 	draw_unresolved_period(p, annotation_height, pp.left(), pp.right());
 
+	if ((int)visible_rows_.size() > max_visible_rows_)
+		owner_->extents_changed(false, true);
+
 	// Update the maximum row count if needed
 	max_visible_rows_ = std::max(max_visible_rows_, (int)visible_rows_.size());
 }
@@ -372,7 +386,7 @@ void DecodeTrace::draw_annotations(vector<pv::data::decode::Annotation> annotati
 		bool a_is_separate = false;
 
 		// Annotation wider than the threshold for a useful label width?
-		if (a_width > 20) {
+		if (a_width >= min_useful_label_width_) {
 			for (const QString &ann_text : a.annotations()) {
 				const int w = p.boundingRect(QRectF(), 0, ann_text).width();
 				// Annotation wide enough to fit a label? Don't put it in a block then
@@ -835,7 +849,8 @@ QComboBox* DecodeTrace::create_channel_selector(
 	vector< shared_ptr<Signal> > sig_list(sigs.begin(), sigs.end());
 	std::sort(sig_list.begin(), sig_list.end(),
 		[](const shared_ptr<Signal> &a, const shared_ptr<Signal> b) {
-			return a->name().compare(b->name()) < 0; });
+			return strnatcasecmp(a->name().toStdString(),
+				b->name().toStdString()) < 0; });
 
 	assert(decoder_stack_);
 	const auto channel_iter = dec->channels().find(pdch);