[gimp/gimp-2-10] plug-ins: fix integer overflow in print-draw-page.c

[Jacob Boerema <jboerema src gnome org>]

commit 96edeb02a49e366ad8b6f55238994d6530da8a5b
Author: Jacob Boerema <jgboerema gmail com>
Date:   Mon Apr 25 14:21:01 2022 -0400

    plug-ins: fix integer overflow in print-draw-page.c
    
    As mentioned by Massimo in issue #6618, part of the problem there is an
    integer overflow when using large size images when computing the offset
    in pixels.
    
    Let's fix our part of the problem by casting to guint64.
    Besides that, also use casts to correctly compute progress for very
    large images.
    
    (cherry picked from commit cd4401fee470438a7ca9201822d2e891415fdb31)

 plug-ins/print/print-draw-page.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/plug-ins/print/print-draw-page.c b/plug-ins/print/print-draw-page.c
index 7fb023971b..22c313d04e 100644
--- a/plug-ins/print/print-draw-page.c
+++ b/plug-ins/print/print-draw-page.c
@@ -99,7 +99,7 @@ print_surface_from_drawable (gint32   drawable_ID,
   guchar             *pixels;
   gint                stride;
   guint               count    = 0;
-  guint               done     = 0;
+  guint64             done     = 0;
 
   if (gimp_drawable_has_alpha (drawable_ID))
     format = babl_format ("cairo-ARGB32");
@@ -145,7 +145,7 @@ print_surface_from_drawable (gint32   drawable_ID,
   while (gegl_buffer_iterator_next (iter))
     {
       const guchar *src  = iter->items[0].data;
-      guchar       *dest = pixels + iter->items[0].roi.y * stride + iter->items[0].roi.x * 4;
+      guchar       *dest = pixels + (guint64) iter->items[0].roi.y * stride + iter->items[0].roi.x * 4;
       gint          y;
 
       for (y = 0; y < iter->items[0].roi.height; y++)
@@ -156,10 +156,10 @@ print_surface_from_drawable (gint32   drawable_ID,
           dest += stride;
         }
 
-      done += iter->items[0].roi.height * iter->items[0].roi.width;
+      done += (guint64) iter->items[0].roi.height * iter->items[0].roi.width;
 
       if (count++ % 16 == 0)
-        gimp_progress_update ((gdouble) done / (width * height));
+        gimp_progress_update ((gdouble) done / ((gdouble) width * height));
     }
 
   g_object_unref (buffer);