Font derivation, plus ConcurrentModificationException on font load

[Phil Race]

There's probably an RFE or bug that mentions the omission of deriveFont
Its the most direct way to say many things such there this font
with all these properties - some of which I may not be aware of -
and I just want it to be bigger/smaller/bolder but otherwise the same
So deriveFont should be added, and JDK 9 would seem a reasonable target 
here.
One thing to note is that 2D  (actually AWT has no part in this),
has built-in support for doing some things that the platforms
may not support. FX delegates to the platform and if the platform
can't oblique a font for you it won't happen even with a deriveFont API.
This is "vice-versa" of course, so there are likely to be things you get
from the platform you won't from cross-platform built-in support,
notably platform-specific rendering.

-phil.


On 12/7/14 2:54 PM, Jeff Hain wrote:
> Hello.
>
>
> Currently discovering JavaFX (using 1.8.0_25-b18),I saw that there is no way to "derive" a font, as could be done in AWT.
> In AWT, if you load "FreeMono.ttf", you get a non-bold font by default, but using
> font.deriveFont(font.BOLD, 1.0f) you can obtain a bold version of it.
> In JavaFX, there is no way to obtain a bold version of "FreeMono.ttf".The best you can do is to load "FreeMonoBold.ttf" and then callFont.load("FreeMono", FontWeight.BOLD, 1.0), but the resulting lookis quite different than AWT's bold FreeMono.ttf.
> ===> Are there plans to add font derivation in JavaFX, so that fonts of various         styles can be obtained from a same ".ttf" file, or will it stay as this?
>
>
> Now code to reproduce a bug :
> ### BEGIN
> import javafx.scene.text.Font;
>
> public class JavaFXCMEOnFontReload {
>      
>      public static void main(String[] args) {
>          
>          /*
>           * java.runtime.version=1.8.0_25-b18
>           */
>          
>          // download: http://www.fonts2u.com/download/free-monospaced.font
>          final String urlStr = "file:src/bugz/FreeMono.ttf";
>          
>          final String initialFontFamily = "AngsanaUPC";
>          System.out.println("font(" + initialFontFamily + ")...");
>          Font.font(initialFontFamily);
>          
>          for (int k=0;k<2;k++) {
>              System.out.println("loadFont(" + urlStr + ")...");
>              final Font font = Font.loadFont(urlStr, 1.0);
>              if (font == null) {
>                  throw new AssertionError("could not load " + urlStr);
>              }
>              
>              System.out.println("font(" + font.getFamily() + ")...");
>              Font.font(font.getFamily());
>          }
>      }
> }
> ### END
>
> Output:font(AngsanaUPC)...
> loadFont(file:src/bugz/FreeMono.ttf)...
> font(FreeMono)...
> loadFont(file:src/bugz/FreeMono.ttf)...
> Exception in thread "main" java.util.ConcurrentModificationException
>      at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429)
>      at java.util.HashMap$KeyIterator.next(HashMap.java:1453)
>      at com.sun.javafx.font.PrismFontFactory.removeEmbeddedFont(PrismFontFactory.java:1550)
>      at com.sun.javafx.font.PrismFontFactory.loadEmbeddedFont(PrismFontFactory.java:1644)
>      at com.sun.javafx.font.PrismFontFactory.loadEmbeddedFont(PrismFontFactory.java:1525)
>      at com.sun.javafx.font.PrismFontLoader.loadFont(PrismFontLoader.java:99)
>      at javafx.scene.text.Font.loadFont(Font.java:400)
>      at bugz.JavaFXCMEOnFontReload.main(JavaFXCMEOnFontReload.java:18)
>
>
>
> -Jeff