From: Soeren Apel <redacted>
Date: Wed, 20 Apr 2016 16:15:12 +0000 (+0200)
Subject: DecodeTrace: Make sure first row's label width can be calculated
X-Git-Tag: pulseview-0.4.0~301
X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=commitdiff_plain;h=cd0c558b8e1dbae12c3faba2349d874942b96066

DecodeTrace: Make sure first row's label width can be calculated

Without a pen set, p.boundingRect() returns 0. All other rows
have their label text width calculated with a pen, which makes
p.boundingRect() work as intended. Fix this by setting a pen
before the first row is processed.
---

diff --git a/pv/view/decodetrace.cpp b/pv/view/decodetrace.cpp
index 20de3755..9e41bc4a 100644
--- a/pv/view/decodetrace.cpp
+++ b/pv/view/decodetrace.cpp
@@ -198,6 +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(