From: Soeren Apel <redacted>
Date: Wed, 24 May 2017 11:45:04 +0000 (+0200)
Subject: Fix #942 by making sure we always have at least one positive div
X-Git-Tag: pulseview-0.4.0~79
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=80067e4944e111bfa8d6b399812dddaa29d5a4ab;p=pulseview.git

Fix #942 by making sure we always have at least one positive div
---

diff --git a/pv/view/analogsignal.cpp b/pv/view/analogsignal.cpp
index 8f6027b7..63e759f9 100644
--- a/pv/view/analogsignal.cpp
+++ b/pv/view/analogsignal.cpp
@@ -737,6 +737,13 @@ void AnalogSignal::on_pos_vdivs_changed(int vdivs)
 
 	pos_vdivs_ = vdivs;
 
+	// There has to be at least one div, positive or negative
+	if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
+		pos_vdivs_ = 1;
+		if (pvdiv_sb_)
+			pvdiv_sb_->setValue(pos_vdivs_);
+	}
+
 	if (autoranging_) {
 		perform_autoranging(true, true);
 
@@ -761,6 +768,13 @@ void AnalogSignal::on_neg_vdivs_changed(int vdivs)
 
 	neg_vdivs_ = vdivs;
 
+	// There has to be at least one div, positive or negative
+	if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
+		pos_vdivs_ = 1;
+		if (pvdiv_sb_)
+			pvdiv_sb_->setValue(pos_vdivs_);
+	}
+
 	if (autoranging_) {
 		perform_autoranging(true, true);