Index: ps/trunk/libraries/osx/build-osx-libs.sh
===================================================================
--- ps/trunk/libraries/osx/build-osx-libs.sh
+++ ps/trunk/libraries/osx/build-osx-libs.sh
@@ -28,7 +28,7 @@
 # NOTE: remember to also update LIB_URL below when changing version
 BOOST_VERSION="boost_1_74_0"
 # NOTE: remember to also update LIB_URL below when changing version
-WXWIDGETS_VERSION="wxWidgets-3.0.5.1"
+WXWIDGETS_VERSION="wxWidgets-3.1.4"
 # libpng was included as part of X11 but that's removed from Mountain Lion
 # (also the Snow Leopard version was ancient 1.2)
 PNG_VERSION="libpng-1.6.36"
@@ -393,7 +393,7 @@
 LIB_VERSION="${WXWIDGETS_VERSION}"
 LIB_ARCHIVE="$LIB_VERSION.tar.bz2"
 LIB_DIRECTORY="$LIB_VERSION"
-LIB_URL="http://github.com/wxWidgets/wxWidgets/releases/download/v3.0.5.1/"
+LIB_URL="http://github.com/wxWidgets/wxWidgets/releases/download/v3.1.4/"
 
 mkdir -p wxwidgets
 pushd wxwidgets > /dev/null
Index: ps/trunk/source/tools/atlas/AtlasUI/CustomControls/Canvas/Canvas.cpp
===================================================================
--- ps/trunk/source/tools/atlas/AtlasUI/CustomControls/Canvas/Canvas.cpp
+++ ps/trunk/source/tools/atlas/AtlasUI/CustomControls/Canvas/Canvas.cpp
@@ -1,4 +1,4 @@
-/* Copyright (C) 2012 Wildfire Games.
+/* Copyright (C) 2021 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -40,7 +40,9 @@
 	// Be careful not to send 'resize' messages to the game before we've
 	// told it that this canvas exists
 	if (! m_SuppressResize)
-		POST_MESSAGE(ResizeScreen, (GetClientSize().GetWidth(), GetClientSize().GetHeight()));
+		POST_MESSAGE(ResizeScreen, (
+			GetClientSize().GetWidth() * GetContentScaleFactor(),
+			GetClientSize().GetHeight() * GetContentScaleFactor()));
 		// TODO: fix flashing
 }
 
@@ -64,6 +66,9 @@
 
 void Canvas::OnMouse(wxMouseEvent& evt)
 {
+	evt.SetX(evt.GetX() * GetContentScaleFactor());
+	evt.SetY(evt.GetY() * GetContentScaleFactor());
+
 	// Capture on button-down, so we can respond even when the mouse
 	// moves off the window
 	if (!m_MouseCaptured && evt.ButtonDown())
Index: ps/trunk/source/tools/atlas/AtlasUI/ScenarioEditor/ScenarioEditor.cpp
===================================================================
--- ps/trunk/source/tools/atlas/AtlasUI/ScenarioEditor/ScenarioEditor.cpp
+++ ps/trunk/source/tools/atlas/AtlasUI/ScenarioEditor/ScenarioEditor.cpp
@@ -592,7 +592,8 @@
 	POST_MESSAGE(InitSDL, ());
 
 	POST_MESSAGE(SetCanvas, (static_cast<wxGLCanvas*>(canvas),
-		canvas->GetClientSize().GetWidth(), canvas->GetClientSize().GetHeight()));
+		canvas->GetClientSize().GetWidth() * canvas->GetContentScaleFactor(),
+		canvas->GetClientSize().GetHeight() * canvas->GetContentScaleFactor()));
 
 	POST_MESSAGE(InitGraphics, ());