Running the ConferenceScheduleApp on a Raspberry Pi

[thilo-openjfx-dev at gebit.de]

Hi,

just in case someone wants to run the ConferenceScheduleApp that was 
demoed at JavaOne 2012 on a Raspberry Pi here's a few hints because it 
wasn't that straight forward...

First of all you have to patch the source code because it uses removed 
(internal) methods ScrollEvent.impl_scrollEvent(...) and 
KeyEvent.impl_keyEvent(...). I'm not 100% sure whether my patch is right 
but at least the application runs. (See patch at the end of this mail.)

I decided to compile it on the Raspberry Pi itself using JDK 8 (with 
JavaFX) for ARM Early Access to avoid problems with incompatible changes. 
The version I used was from openjfx/8/master/rt.

In directory rt/apps/experiments/ConferenceScheduleApp compile with

    ant -Dplatforms.Default_JavaFX_Platform.home=/opt/jdk1.8.0 
-Djavafx.runtime=/opt/jdk1.8.0/jre

Packaging didn't quite work yet so I simply ran it from the build 
directory with

    java -Djavafx.platform=eglfb -cp 
/opt/jdk1.8.0/jre/lib/jfxrt.jar:classes 
com.javafx.experiments.scheduleapp.ConferenceScheduleApp

Maybe it runs not as fast as the BeagleBoard version shown at JavaOne but 
performance is still quite impressive. And of course the 
ConferenceScheduleApp itself is an outstanding example of the powers of 
JavaFX! Great work, lads!

Cheers...
Thilo



diff -r e25ee61a987d 
apps/experiments/ConferenceScheduleApp/src/com/javafx/experiments/scheduleapp/TouchScrollEventSynthesizer.java
--- 
a/apps/experiments/ConferenceScheduleApp/src/com/javafx/experiments/scheduleapp/TouchScrollEventSynthesizer.java 
Thu Jan 03 14:35:53 2013 -0800
+++ 
b/apps/experiments/ConferenceScheduleApp/src/com/javafx/experiments/scheduleapp/TouchScrollEventSynthesizer.java 
Thu Jan 10 21:53:05 2013 +0100
@@ -116,17 +116,18 @@
                 }
                 if (clickThresholdBroken) {
                     // TODO
-                    Event.fireEvent(e.getTarget(), 
ScrollEvent.impl_scrollEvent(
-                            ScrollEvent.SCROLL,
+                   ScrollEvent tempScrollEvent = new ScrollEvent(null, 
e.getTarget(),
+                           ScrollEvent.SCROLL,
                             scrollDistX, scrollDistY,
                             scrollDistX, scrollDistY,
+                            me.isShiftDown(), me.isControlDown(), 
me.isAltDown(), me.isMetaDown(),
+                           true, false,
+                            me.getX(), me.getY(),
+                            me.getSceneX(), me.getSceneY(),
                             ScrollEvent.HorizontalTextScrollUnits.NONE, 
0,
                             ScrollEvent.VerticalTextScrollUnits.NONE, 0,
-                            0,
-                            me.getX(), me.getY(),
-                            me.getSceneX(), me.getSceneY(),
-                            me.isShiftDown(), me.isControlDown(), 
me.isAltDown(), me.isMetaDown(),
-                            true, false));
+                           0);
+                    Event.fireEvent(e.getTarget(), tempScrollEvent);
                 }
             } else if (e.getEventType() == MouseEvent.MOUSE_RELEASED) {
                 handleRelease(me);
@@ -179,17 +180,18 @@
                     final double dragStepY = mouseY - lastMouseY;
 
                     if (Math.abs(dragStepX) >= 1.0 || Math.abs(dragStepY) 
>= 1.0) {
-                        Event.fireEvent(me.getTarget(), 
ScrollEvent.impl_scrollEvent(
-                                ScrollEvent.SCROLL,
+                       ScrollEvent tempScrollEvent = new 
ScrollEvent(null, me.getTarget(),
+                               ScrollEvent.SCROLL,
                                 dragStepX, dragStepY,
                                 (distanceX * get()), (distanceY * get()),
+                                me.isShiftDown(), me.isControlDown(), 
me.isAltDown(), me.isMetaDown(),
+                               true, true,
+                                me.getX(), me.getY(),
+                                me.getSceneX(), me.getSceneY(),
 ScrollEvent.HorizontalTextScrollUnits.NONE, 0,
                                 ScrollEvent.VerticalTextScrollUnits.NONE, 
0,
-                                0,
-                                me.getX(), me.getY(),
-                                me.getSceneX(), me.getSceneY(),
-                                me.isShiftDown(), me.isControlDown(), 
me.isAltDown(), me.isMetaDown(),
-                                true, true));
+                                0);
+                        Event.fireEvent(me.getTarget(), tempScrollEvent);
                     }
                     lastMouseX = mouseX;
                     lastMouseY = mouseY;
diff -r e25ee61a987d 
apps/experiments/ConferenceScheduleApp/src/com/javafx/experiments/scheduleapp/control/VirtualKeyboardSkin.java
--- 
a/apps/experiments/ConferenceScheduleApp/src/com/javafx/experiments/scheduleapp/control/VirtualKeyboardSkin.java 
Thu Jan 03 14:35:53 2013 -0800
+++ 
b/apps/experiments/ConferenceScheduleApp/src/com/javafx/experiments/scheduleapp/control/VirtualKeyboardSkin.java 
Thu Jan 10 21:53:05 2013 +0100
@@ -259,8 +259,8 @@
         }
 
         protected KeyEvent event(EventType<KeyEvent> type) {
-            return KeyEvent.impl_keyEvent(getSkinnable(), chars, "", 0,
-                                          shiftDown, false, false, false, 
type);
+            // TODO: how to pass getSkinnable()?
+           return new KeyEvent(type, chars, "", 0, shiftDown, false, 
false, false);
         }
     }
 
@@ -341,8 +341,8 @@
 
         protected KeyEvent event(EventType<KeyEvent> type) {
             if (type == KeyEvent.KEY_PRESSED || type == 
KeyEvent.KEY_RELEASED) {
-                return KeyEvent.impl_keyEvent(getSkinnable(), chars, 
chars, code.impl_getCode(),
-                                              shiftDown, false, false, 
false, type);
+                // TODO: how to pass getSkinnable()?
+               return new KeyEvent(type, chars, chars, 
code.impl_getCode(), shiftDown, false, false, false);
             } else {
                 return super.event(type);
             }