Resolved the crash when inverting the worksheet (#1951)

wxMaxima-developers · Sep 5, 2024 · 83722f8 · 83722f8
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diff --git a/NEWS.md b/NEWS.md
@@ -1,6 +1,7 @@
 # Current
 
 - A Spanish translation update by cyphra.
+- Resolved a crash when inverting the worksheet (#1951)
 
 # 24.08.0
 

diff --git a/src/Configuration.cpp b/src/Configuration.cpp
@@ -1411,9 +1411,12 @@ wxColor Configuration::MakeColorDifferFromBackground(wxColor color) {
     return InvertColour(color);
   } else {
     int maxOldCol = std::max(std::max(color.Red(), color.Green()), color.Blue());
-    return wxColour(newBrightness * color.Red() / maxOldCol,
-                    newBrightness * color.Green() / maxOldCol,
-                    newBrightness * color.Blue() / maxOldCol);
+    if (maxOldCol < 1)
+      return *wxWHITE;
+    else
+      return wxColour(newBrightness * color.Red() / maxOldCol,
+                      newBrightness * color.Green() / maxOldCol,
+                      newBrightness * color.Blue() / maxOldCol);
   }
 }