From e4a5b8d352e82bae6b02c23a1c1fb54a40667520 Mon Sep 17 00:00:00 2001
From: Chocobo1 <Chocobo1@users.noreply.github.com>
Date: Mon, 20 Mar 2017 14:11:49 +0800
Subject: [PATCH] Setup DPI at startup

---
 src/app/main.cpp | 29 ++++++++++++++++++++++++-----
 1 file changed, 24 insertions(+), 5 deletions(-)

diff --git a/src/app/main.cpp b/src/app/main.cpp
index e5bfbfdaa..7a40680bf 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -40,6 +40,7 @@
 #include <QPen>
 #include <QPushButton>
 #include <QSplashScreen>
+
 #ifdef QBT_STATIC_QT
 #include <QtPlugin>
 #ifdef QBT_USES_QT5
@@ -120,15 +121,20 @@ struct QBtCommandLineParameters
     }
 };
 
-#ifndef DISABLE_GUI
-void showSplashScreen();
-#endif
 void displayVersion();
 void displayUsage(const QString &prg_name);
 bool userAgreesWithLegalNotice();
 void displayBadArgMessage(const QString &message);
 QBtCommandLineParameters parseCommandLine();
 
+#if !defined(DISABLE_GUI)
+void showSplashScreen();
+
+#if defined(Q_OS_UNIX)
+void setupDpi();
+#endif  // Q_OS_UNIX
+#endif  // DISABLE_GUI
+
 // Main
 int main(int argc, char *argv[])
 {
@@ -141,6 +147,11 @@ int main(int argc, char *argv[])
     macMigratePlists();
 #endif
 
+#if !defined(DISABLE_GUI) && defined(Q_OS_UNIX)
+    setupDpi();
+#endif
+
+
 #ifndef DISABLE_GUI
     migrateRSS();
 #endif
@@ -379,7 +390,7 @@ void sigAbnormalHandler(int signum)
 }
 #endif // defined(Q_OS_UNIX) || defined(STACKTRACE_WIN)
 
-#ifndef DISABLE_GUI
+#if !defined(DISABLE_GUI)
 void showSplashScreen()
 {
     QPixmap splash_img(":/icons/skin/splash.png");
@@ -393,7 +404,15 @@ void showSplashScreen()
     QTimer::singleShot(1500, splash, SLOT(deleteLater()));
     qApp->processEvents();
 }
-#endif
+
+#if defined(Q_OS_UNIX)
+void setupDpi()
+{
+    if (qgetenv("QT_AUTO_SCREEN_SCALE_FACTOR").isEmpty())
+        qputenv("QT_AUTO_SCREEN_SCALE_FACTOR", "1");
+}
+#endif  // Q_OS_UNIX
+#endif  // DISABLE_GUI
 
 void displayVersion()
 {