Preferences: arrange checkboxes into two columns

Author: facchinm

app/src/cc/arduino/view/preferences/Preferences.java

@@ -248,7 +248,7 @@ public void mouseEntered(java.awt.event.MouseEvent evt) {
     arduinoNotRunningLabel.setForeground(Color.GRAY);
     arduinoNotRunningLabel.setText(tr("(edit only when Arduino is not running)"));
 
-    checkboxesContainer.setLayout(new javax.swing.BoxLayout(checkboxesContainer, javax.swing.BoxLayout.Y_AXIS));
+    checkboxesContainer.setLayout(new GridLayout(0,2));
 
     displayLineNumbersBox.setText(tr("Display line numbers"));
     checkboxesContainer.add(displayLineNumbersBox);
@@ -322,7 +322,7 @@ public void itemStateChanged(java.awt.event.ItemEvent evt) {
         .addContainerGap()
         .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
           .addGroup(jPanel1Layout.createSequentialGroup()
-            .addComponent(sketchbookLocationField, javax.swing.GroupLayout.DEFAULT_SIZE, 553, Short.MAX_VALUE)
+            .addComponent(sketchbookLocationField, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
             .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
             .addComponent(browseButton))
           .addComponent(checkboxesContainer, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
@@ -631,13 +631,13 @@ public void actionPerformed(java.awt.event.ActionEvent evt) {
     getContentPane().setLayout(layout);
     layout.setHorizontalGroup(
       layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
-      .addGap(0, 691, Short.MAX_VALUE)
+      .addGap(0, 800, Short.MAX_VALUE)
       .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
         .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
     );
     layout.setVerticalGroup(
       layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
-      .addGap(0, 580, Short.MAX_VALUE)
+      .addGap(0, 400, Short.MAX_VALUE)
       .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
         .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
     );