From 5ca81ad837c32d502fd810893495857670a45211 Mon Sep 17 00:00:00 2001
From: Andrey Rodionov <roand@inbox.ru>
Date: Sat, 9 Jan 2021 19:55:26 +0300
Subject: [PATCH] Add support Qt6

---
 CMakeLists.txt | 11 +++++++----
 rtptheme.h     |  4 ++--
 2 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5d8079d..cb75633 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.16)
 
 project(rtptheme LANGUAGES CXX)
 
@@ -9,7 +9,10 @@ set(CMAKE_AUTORCC ON)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-find_package(Qt5 COMPONENTS Widgets REQUIRED)
+if(NOT QT_DEFAULT_MAJOR_VERSION)
+    set(QT_DEFAULT_MAJOR_VERSION 5 CACHE STRING "Qt version to use (5 or 6), defaults to 5")
+endif()
+find_package(Qt${QT_DEFAULT_MAJOR_VERSION} COMPONENTS Widgets REQUIRED)
 
 add_library(rtptheme SHARED
   main.cpp  
@@ -18,8 +21,8 @@ add_library(rtptheme SHARED
   rtptheme.json
 )
 
-target_link_libraries(rtptheme PRIVATE Qt5::Widgets)
-target_link_libraries(rtptheme PRIVATE Qt5::GuiPrivate)
+target_link_libraries(rtptheme PRIVATE Qt::Widgets)
+target_link_libraries(rtptheme PRIVATE Qt::GuiPrivate)
 
 target_compile_definitions(rtptheme PRIVATE RTPTHEME_LIBRARY)
 
diff --git a/rtptheme.h b/rtptheme.h
index ed03684..f16c7e5 100644
--- a/rtptheme.h
+++ b/rtptheme.h
@@ -1,4 +1,4 @@
-#ifndef RTPTHEME_H
+#ifndef RTPTHEME_H
 #define RTPTHEME_H
 
 #include <qpa/qplatformtheme.h>
@@ -33,7 +33,7 @@ public:
 
     QPixmap standardPixmap(StandardPixmap sp, const QSizeF &size) const override;
     QIcon fileIcon(const QFileInfo &fileInfo,
-                   QPlatformTheme::IconOptions iconOptions = nullptr) const override;
+                   QPlatformTheme::IconOptions iconOptions = {}) const override;
 
     QIconEngine *createIconEngine(const QString &iconName) const override;