From d7985607d6dd8308f104d84c778080731fa23c9a Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Wed, 25 Nov 2020 09:21:27 +0100
Subject: Fix for issue #123 - X11 platform

As discussed, only the window position becomes rounded to nearest integer value
when a fractional GUI scale factor is applied.
---
 src/drivers/X11/Fl_X11_Screen_Driver.cxx | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'src/drivers')

diff --git a/src/drivers/X11/Fl_X11_Screen_Driver.cxx b/src/drivers/X11/Fl_X11_Screen_Driver.cxx
index 914104769..90a838126 100644
--- a/src/drivers/X11/Fl_X11_Screen_Driver.cxx
+++ b/src/drivers/X11/Fl_X11_Screen_Driver.cxx
@@ -793,8 +793,11 @@ Fl_RGB_Image *Fl_X11_Screen_Driver::read_win_rectangle(int X, int Y, int w, int
       XTranslateCoordinates(fl_display, xid,
                             RootWindow(fl_display, fl_screen), Xs, Ys, &dx, &dy, &child_win);
       // screen dimensions
-      Fl::screen_xywh(sx, sy, sw, sh, Fl_Window_Driver::driver(win)->screen_num());
-      sx *= s; sy *= s; sw *= s; sh *= s;
+      int ns = Fl_Window_Driver::driver(win)->screen_num();
+      sx = screens[ns].x_org;
+      sy = screens[ns].y_org;
+      sw = screens[ns].width;
+      sh = screens[ns].height;
     }
     if (win && !allow_outside && int(s) != s) {
       ws = (w+1) * s; // matches what Fl_Graphics_Driver::cache_size() does
-- 
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