commit eda03f0f8888d2cf96fae2ecc5da4a17117148e3
Author:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
AuthorDate: Wed Feb 17 09:30:08 2021 +0100
Commit:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
CommitDate: Wed Feb 17 09:30:26 2021 +0100

    Backport fix for issue #185 "Shared Image reload() loses initial dimensions" from branch 1.4

 src/Fl_Shared_Image.cxx | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git src/Fl_Shared_Image.cxx src/Fl_Shared_Image.cxx
index 3e099ce..9b0004b 100644
--- src/Fl_Shared_Image.cxx
+++ src/Fl_Shared_Image.cxx
@@ -291,7 +291,11 @@ void Fl_Shared_Image::reload() {
     if (alloc_image_) delete image_;
 
     alloc_image_ = 1;
-
+#if FLTK_ABI_VERSION >= 10304
+    image_ = img;
+    int W = w();
+    int H = h();
+#else
     if ((img->w() != w() && w()) || (img->h() != h() && h())) {
       // Make sure the reloaded image is the same size as the existing one.
       Fl_Image *temp = img->copy(w(), h());
@@ -300,8 +304,13 @@ void Fl_Shared_Image::reload() {
     } else {
       image_ = img;
     }
-
+#endif
     update();
+#if FLTK_ABI_VERSION >= 10304
+    // Make sure the reloaded image gets the same drawing size as the existing one.
+    if (W)
+      scale(W, H, 0, 1);
+#endif
   }
 }