[poincare] Fix LayoutNode::canBeOmittedMultiplicationRightFactor

poincare/include/poincare/char_layout.h

@@ -28,6 +28,7 @@ public:
   int serialize(char * buffer, int bufferSize, Preferences::PrintFloatMode floatDisplayMode, int numberOfSignificantDigits) const override;
   bool isChar() const override { return true; }
   bool isCollapsable(int * numberOfOpenParenthesis, bool goingLeft) const override;
+  bool canBeOmittedMultiplicationRightFactor() const override;
 
   // TreeNode
   size_t size() const override { return sizeof(CharLayoutNode); }

poincare/include/poincare/vertical_offset_layout.h

@@ -31,6 +31,7 @@ public:
   int serialize(char * buffer, int bufferSize, Preferences::PrintFloatMode floatDisplayMode, int numberOfSignificantDigits) const override;
   bool mustHaveLeftSibling() const override { return true; }
   bool isVerticalOffset() const override { return true; }
+  bool canBeOmittedMultiplicationRightFactor() const override { return false; }
 
   // TreeNode
   size_t size() const override { return sizeof(VerticalOffsetLayoutNode); }

poincare/src/char_layout.cpp

@@ -65,6 +65,13 @@ bool CharLayoutNode::isCollapsable(int * numberOfOpenParenthesis, bool goingLeft
   return true;
 }
 
+bool CharLayoutNode::canBeOmittedMultiplicationRightFactor() const {
+  if (m_char == '!') {
+    return false;
+  }
+  return LayoutNode::canBeOmittedMultiplicationRightFactor();
+}
+
 // Sizing and positioning
 KDSize CharLayoutNode::computeSize() {
   return m_font->glyphSize();

poincare/src/layout_node.cpp

@@ -123,7 +123,7 @@ bool LayoutNode::canBeOmittedMultiplicationRightFactor() const {
    * functions changes, it might not be the case anymore so make sure to modify
    * canBeOmittedMultiplicationRightFactor if needed. */
   int numberOfOpenParentheses = 0;
-  return isCollapsable(&numberOfOpenParentheses, false) && !isVerticalOffset();
+  return isCollapsable(&numberOfOpenParentheses, false);
 }
 
 // Private