From 488e7363bc1f41c310024847c6dbc3034fda47dd Mon Sep 17 00:00:00 2001
From: AtesComp <atescomp@gmail.com>
Date: Thu, 30 Apr 2026 18:24:53 -0400
Subject: [PATCH] Add support for private fonts to wxQt

Use QFontDatabase::addApplicationFont() to implement AddPrivateFont().

Closes #26403.

Closes #26419.
---
 build/cmake/options.cmake |  2 +-
 configure                 |  2 +-
 configure.ac              |  2 +-
 include/wx/chkconf.h      |  2 +-
 src/qt/font.cpp           | 27 +++++++++++++++++++++++++++
 5 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/build/cmake/options.cmake b/build/cmake/options.cmake
index 87b310732f..8ab7d6caf6 100644
--- a/build/cmake/options.cmake
+++ b/build/cmake/options.cmake
@@ -470,7 +470,7 @@ wx_option(wxUSE_DRAGIMAGE "use wxDragImage")
 wx_option(wxUSE_UIACTIONSIMULATOR "use wxUIActionSimulator (experimental)")
 wx_option(wxUSE_DC_TRANSFORM_MATRIX "use wxDC::SetTransformMatrix and related")
 wx_option(wxUSE_WEBVIEW_WEBKIT "use wxWebView WebKit backend")
-if(WIN32 OR APPLE)
+if(WIN32 OR APPLE OR WXQT)
     set(wxUSE_PRIVATE_FONTS_DEFAULT ON)
 else()
     set(wxUSE_PRIVATE_FONTS_DEFAULT OFF)
diff --git a/configure b/configure
index f70cafdeaf..70612cf21d 100755
--- a/configure
+++ b/configure
@@ -39708,7 +39708,7 @@ $as_echo "yes" >&6; }
 
 fi
         fi
-    elif test "$wxUSE_MAC" = 1 -o "$wxUSE_MSW" = 1; then
+    elif test "$wxUSE_QT" = 1 -o "$wxUSE_MAC" = 1 -o "$wxUSE_MSW" = 1; then
                 $as_echo "#define wxUSE_PRIVATE_FONTS 1" >>confdefs.h
 
     fi
diff --git a/configure.ac b/configure.ac
index 3736030019..967585ec0c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6800,7 +6800,7 @@ if test "$wxUSE_PRIVATE_FONTS" = "yes"; then
                               ],
                               [AC_MSG_WARN([run-time font loading won't be supported by wxFont])])
         fi
-    elif test "$wxUSE_MAC" = 1 -o "$wxUSE_MSW" = 1; then
+    elif test "$wxUSE_QT" = 1 -o "$wxUSE_MAC" = 1 -o "$wxUSE_MSW" = 1; then
         dnl In these ports we don't need anything special.
         AC_DEFINE(wxUSE_PRIVATE_FONTS)
     fi
diff --git a/include/wx/chkconf.h b/include/wx/chkconf.h
index 50890aa85f..5113339f8b 100644
--- a/include/wx/chkconf.h
+++ b/include/wx/chkconf.h
@@ -2300,7 +2300,7 @@
 #endif /* wxUSE_PREFERENCES_EDITOR */
 
 #if wxUSE_PRIVATE_FONTS
-#   if !defined(__WXMSW__) && !defined(__WXGTK__) && !defined(__WXOSX__)
+#   if !defined(__WXMSW__) && !defined(__WXGTK__) && !defined(__WXQT__) && !defined(__WXOSX__)
 #       undef wxUSE_PRIVATE_FONTS
 #       define wxUSE_PRIVATE_FONTS 0
 #   endif
diff --git a/src/qt/font.cpp b/src/qt/font.cpp
index faa1467f18..2b3ff8f1d6 100644
--- a/src/qt/font.cpp
+++ b/src/qt/font.cpp
@@ -623,3 +623,30 @@ wxString wxNativeFontInfo::ToUserString() const
 {
     return ToString();
 }
+
+// ----------------------------------------------------------------------------
+// Support for adding private fonts
+// ----------------------------------------------------------------------------
+
+#if wxUSE_PRIVATE_FONTS
+
+#include "wx/fontenum.h"
+
+#include <QtGui/QFontDatabase>
+
+bool wxFontBase::AddPrivateFont(const wxString& strFilename)
+{
+    const int iFontID =
+        QFontDatabase::addApplicationFont( wxQtConvertString(strFilename) );
+    if ( iFontID == -1 )
+        return false;
+
+    // Ensure that the face names defined by private fonts are recognized by
+    // our SetFaceName() which uses wxFontEnumerator to check if the name is in
+    // the list of available faces.
+    wxFontEnumerator::InvalidateCache();
+
+    return true;
+}
+
+#endif // wxUSE_PRIVATE_FONTS