check for installed Source Sans on Windows (fix for #4747)

app/src/processing/app/ui/Toolkit.java

@@ -69,6 +69,7 @@ import javax.swing.JPopupMenu;
 import javax.swing.JRootPane;
 import javax.swing.KeyStroke;
 
+import processing.app.Base;
 import processing.app.Language;
 import processing.app.Messages;
 import processing.app.Platform;
@@ -963,8 +964,25 @@ public class Toolkit {
   static public Font getSansFont(int size, int style) {
     if (sansFont == null) {
       try {
-        sansFont = createFont("SourceSansPro-Regular.ttf", size);
-        sansBoldFont = createFont("SourceSansPro-Semibold.ttf", size);
+        // check for an installed version, because they cause nasty conflicts
+        // https://github.com/processing/processing/issues/4747
+        if (Platform.isWindows()) {
+          sansFont = new Font("Source Sans Pro", Font.PLAIN, size);
+          // the ps name will be Dialog.plain (or similar) if not installed
+          if (!sansFont.getPSName().startsWith("Source")) {
+            sansFont = null;
+          }
+          sansBoldFont = new Font("Source Sans Pro Semibold", Font.PLAIN, size);
+          if (!sansBoldFont.getPSName().startsWith("Source")) {
+            sansBoldFont = null;
+          }
+        }
+        if (sansFont == null) {
+          sansFont = createFont("SourceSansPro-Regular.ttf", size);
+        }
+        if (sansBoldFont == null) {
+          sansBoldFont = createFont("SourceSansPro-Semibold.ttf", size);
+        }
 
         // additional language constraints
         if ("el".equals(Language.getLanguage())) {

core/todo.txt

@@ -21,6 +21,10 @@ cleaning
 o probably should also check to make sure PApplet running JVM 8
 X   or compile against 1.8 and force it?
 
+andres
+X PShape array index out of bounds when using P3D 
+X   https://github.com/processing/processing/issues/4773
+
 _ no prompt shows with selectInput() on 10.11 and 10.12
 _   https://github.com/processing/processing/issues/4758
 

todo.txt

@@ -22,6 +22,9 @@ _ blank window on startup where the "welcome" screen should be
 _   https://github.com/processing/processing/issues/3933
 _   this may be fixed (removed invokeLater() on startup), unconfirmed
 
+_ Spaces not handled correctly in when installing "processing-java" on macOS
+_   https://github.com/processing/processing/issues/4779
+
 contrib
 X Added the remove filter feature
 X   https://github.com/processing/processing/pull/3890