From 1fedcf628f8e78641030c0410587b5c6833d050f Mon Sep 17 00:00:00 2001
From: itsmattkc <itsmattkc@gmail.com>
Date: Wed, 29 Dec 2021 10:01:01 -0800
Subject: [PATCH] set dots per meter on image when drawing text

Fixes #1805
---
 app/node/generator/text/text.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/node/generator/text/text.cpp b/app/node/generator/text/text.cpp
index f43908399..458740523 100644
--- a/app/node/generator/text/text.cpp
+++ b/app/node/generator/text/text.cpp
@@ -117,7 +117,13 @@ void TextGenerator::GenerateFrame(FramePtr frame, const GenerateJob& job) const
   QImage img(frame->width(), frame->height(), QImage::Format_Grayscale8);
   img.fill(Qt::transparent);
 
+  // 72 DPI in DPM (72 / 2.54 * 100)
+  const int dpm = 2835;
+  img.setDotsPerMeterX(dpm);
+  img.setDotsPerMeterY(dpm);
+
   QTextDocument text_doc;
+  text_doc.documentLayout()->setPaintDevice(&img);
 
   // Set default font
   QFont default_font;