From 2c12bf4e1ab93d84a3f6677b7561a1ce4e419f75 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Sat, 9 Feb 2019 16:28:26 +0100
Subject: X11 platform: account for window scaling in drag-n-drop operations.

---
 src/Fl_x.cxx | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/Fl_x.cxx')

diff --git a/src/Fl_x.cxx b/src/Fl_x.cxx
index f3beb582e..6272f8694 100644
--- a/src/Fl_x.cxx
+++ b/src/Fl_x.cxx
@@ -1635,8 +1635,12 @@ int fl_handle(const XEvent& thisevent)
       fl_xmousewin = window;
       in_a_window = true;
       fl_dnd_source_window = data[0];
-      Fl::e_x_root = data[2]>>16;
-      Fl::e_y_root = data[2]&0xFFFF;
+      float s = 1;
+#if USE_XFT
+      if (window) s = Fl::screen_driver()->scale(Fl_Window_Driver::driver(window)->screen_num());
+#endif
+      Fl::e_x_root = (data[2]>>16)/s;
+      Fl::e_y_root = (data[2]&0xFFFF)/s;
       if (window) {
         Fl::e_x = Fl::e_x_root-window->x();
         Fl::e_y = Fl::e_y_root-window->y();
-- 
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