From: Soeren Apel <soeren@apelpie.net>
Date: Sun, 28 Oct 2018 19:27:07 +0000 (+0100)
Subject: SignalBase: Make sure an invalid color isn't shown as "white"
X-Git-Url: http://git.code-monkey.de/?p=pulseview.git;a=commitdiff_plain;h=e590fc9c4f01fe3a4147c63e85f7aeaffeec5498

SignalBase: Make sure an invalid color isn't shown as "white"

While the color technically is black and not white, an alpha
value of 0 makes it appear as white.
---

diff --git a/pv/data/signalbase.cpp b/pv/data/signalbase.cpp
index 670de49..78633de 100644
--- a/pv/data/signalbase.cpp
+++ b/pv/data/signalbase.cpp
@@ -474,10 +474,14 @@ void SignalBase::restore_settings(QSettings &settings)
 		QVariant value = settings.value("color");
 
 		// Workaround for Qt QColor serialization bug on OSX
-		if (((QMetaType::Type)(value.type()) == QMetaType::QColor) && value.isValid())
+		if ((QMetaType::Type)(value.type()) == QMetaType::QColor)
 			set_color(value.value<QColor>());
 		else
 			set_color(QColor::fromRgba(value.value<uint32_t>()));
+
+		// A color with an alpha value of 0 makes the signal marker invisible
+		if (color() == QColor(0, 0, 0, 0))
+			set_color(Qt::gray);
 	}
 
 	if (settings.contains("conversion_type"))