Fixed pref size calculation and will not throw exceptions on parse error

build.gradle

@@ -100,7 +100,7 @@ uploadArchives {
 }
 
 task wrapper(type: Wrapper) {
-    gradleVersion = '2.8'
+    gradleVersion = '4.3.1'
 }
 
 

gradle.properties

@@ -1 +1 @@
-version=0.3.2
+version=0.3.3

src/main/java/com/proudapes/jlatexmathfx/Control/LateXMathSkin.java

@@ -5,6 +5,7 @@
 import javafx.geometry.VPos;
 import javafx.scene.canvas.Canvas;
 import javafx.scene.control.SkinBase;
+import org.scilab.forge.jlatexmath.ParseException;
 import org.scilab.forge.jlatexmath.TeXConstants;
 import org.scilab.forge.jlatexmath.TeXFormula;
 import org.scilab.forge.jlatexmath.TeXIcon;
@@ -42,9 +43,18 @@ public LateXMathSkin(LateXMathControl control) {
     }
 
     protected void updateTeXIcon() {
-        TeXFormula teXFormula = new TeXFormula(getSkinnable().getFormula());
-        teXIcon= teXFormula.createTeXIcon(TeXConstants.STYLE_DISPLAY, getSkinnable().getSize()/11);
-        teXIcon.setInsets(new Insets(1, 1, 1, 1));
+        try {
+
+            TeXFormula teXFormula = new TeXFormula(getSkinnable().getFormula());
+            teXIcon = teXFormula.createTeXIcon(TeXConstants.STYLE_DISPLAY, getSkinnable().getSize() / 11);
+            teXIcon.setInsets(new Insets(1, 1, 1, 1));
+        }
+        catch (ParseException p) {
+            getSkinnable().setFormula("\\text{Invalid Formula}");
+            TeXFormula teXFormula = new TeXFormula(getSkinnable().getFormula());
+            teXIcon = teXFormula.createTeXIcon(TeXConstants.STYLE_DISPLAY, getSkinnable().getSize() / 11);
+            teXIcon.setInsets(new Insets(1, 1, 1, 1));
+        }
 
         getSkinnable().requestLayout();
     }
@@ -75,7 +85,7 @@ protected void layoutChildren(double contentX, double contentY, double contentWi
 
     @Override
     protected double computeMaxWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset) {
-        return computePrefHeight(height, topInset, rightInset, bottomInset, leftInset);
+        return computePrefWidth(height, topInset, rightInset, bottomInset, leftInset);
     }
 
     @Override

src/test/java/com/proudapes/jlatexmathfx/test/NoExceptionOnWrongFormula.java

@@ -0,0 +1,32 @@
+package com.proudapes.jlatexmathfx.test;
+
+import javafx.application.Application;
+import javafx.scene.Scene;
+import javafx.scene.layout.VBox;
+import javafx.stage.Stage;
+import com.proudapes.jlatexmathfx.Control.LateXMathControl;
+
+public class NoExceptionOnWrongFormula extends Application {
+    @Override
+    public void start(Stage primaryStage) throws Exception {
+        String latex = "\\beginError{array}{l}";
+        VBox pane=new VBox();
+        LateXMathControl lc=new LateXMathControl(latex);
+        lc.setSize(24);
+        pane.getChildren().addAll(lc);
+
+        Scene scene=new Scene(pane);
+        primaryStage.setScene(scene);
+        primaryStage.setWidth(800);
+        primaryStage.setHeight(600);
+
+        primaryStage.show();
+
+
+    }
+
+    public static void main(String[] args) {
+        launch(args);
+    }
+
+}