min Qt 6.4

.ci/compile.sh

@@ -168,6 +168,8 @@ if [[ $RUNNER_OS == macOS ]]; then
   # we use find to get the first subfolder with the name "macos"
   # this works independent of the qt version as there should be only one version installed on the runner at a time
   export QTDIR
+  # Add QTDIR to CMAKE_PREFIX_PATH so CMake can find Qt6
+  export CMAKE_PREFIX_PATH="$QTDIR:$CMAKE_PREFIX_PATH"
 
   if [[ $TARGET_MACOS_VERSION ]]; then
     # CMAKE_OSX_DEPLOYMENT_TARGET is a vanilla cmake flag needed to compile to target macOS version

CMakeLists.txt

@@ -195,6 +195,8 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
   add_definitions("-DSFMT_MEXP=19937")
 endif()
 
+find_package(Qt6 6.4 REQUIRED)
+
 find_package(Threads REQUIRED)
 
 # Determine 32 or 64 bit build
@@ -360,7 +362,6 @@ if(TEST)
   add_subdirectory(tests)
 endif()
 
-if(Qt6_FOUND AND Qt6_VERSION_MINOR GREATER_EQUAL 3)
+if(Qt6_FOUND)
-  # Qt6.3+ requires project finalization to support translations
   qt6_finalize_project()
 endif()

cockatrice/src/interface/card_picture_loader/card_picture_loader.cpp

@@ -221,13 +221,7 @@ bool CardPictureLoader::hasCustomArt()
     // Check if there is at least one non-directory file in the pics path, other
     // than in the "downloadedPics" subdirectory.
     while (it.hasNext()) {
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 3, 0))
         QFileInfo dir(it.nextFileInfo());
-#else
-        // nextFileInfo() is only available in Qt 6.3+, for previous versions, we build
-        // the QFileInfo from a QString which requires more system calls.
-        QFileInfo dir(it.next());
-#endif
 
         if (it.fileName() == "downloadedPics")
             continue;

cockatrice/src/interface/widgets/dialogs/dlg_settings.cpp

@@ -1441,12 +1441,7 @@ MessagesSettingsPage::MessagesSettingsPage()
 
 void MessagesSettingsPage::updateColor(const QString &value)
 {
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 4, 0))
     QColor colorToSet = QColor::fromString("#" + value);
-#else
-    QColor colorToSet;
-    colorToSet.setNamedColor("#" + value);
-#endif
     if (colorToSet.isValid()) {
         SettingsCache::instance().setChatMentionColor(value);
         updateMentionPreview();
@@ -1455,12 +1450,7 @@ void MessagesSettingsPage::updateColor(const QString &value)
 
 void MessagesSettingsPage::updateHighlightColor(const QString &value)
 {
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 4, 0))
     QColor colorToSet = QColor::fromString("#" + value);
-#else
-    QColor colorToSet;
-    colorToSet.setNamedColor("#" + value);
-#endif
     if (colorToSet.isValid()) {
         SettingsCache::instance().setChatHighlightColor(value);
         updateHighlightPreview();

cockatrice/src/interface/widgets/server/chat_view/chat_view.cpp

@@ -517,23 +517,13 @@ void ChatView::showSystemPopup(const QString &userName)
 
 QColor ChatView::getCustomMentionColor()
 {
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 4, 0))
     QColor customColor = QColor::fromString("#" + SettingsCache::instance().getChatMentionColor());
-#else
-    QColor customColor;
-    customColor.setNamedColor("#" + SettingsCache::instance().getChatMentionColor());
-#endif
     return customColor.isValid() ? customColor : DEFAULT_MENTION_COLOR;
 }
 
 QColor ChatView::getCustomHighlightColor()
 {
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 4, 0))
     QColor customColor = QColor::fromString("#" + SettingsCache::instance().getChatMentionColor());
-#else
-    QColor customColor;
-    customColor.setNamedColor("#" + SettingsCache::instance().getChatMentionColor());
-#endif
     return customColor.isValid() ? customColor : DEFAULT_MENTION_COLOR;
 }
 

servatrice/src/smtp/qxthmac.cpp

@@ -167,11 +167,7 @@ bool QxtHmac::verify(const QByteArray& otherInner)
 void QxtHmac::addData(const char* data, int length)
 {
     Q_ASSERT(qxt_d().opad.size());
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 3, 0))
     qxt_d().ihash->addData(QByteArrayView(data, length));
-#else
-    qxt_d().ihash->addData(data, length);
-#endif
     qxt_d().result.clear();
 }