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Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 131
Developing JavaFX Apps for Tablets(JavaFX Multi-touch Features)
Jim Weaver
Java Technology Ambassador
Oracle Corporation
@JavaFXpert
Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 132 Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 16
JavaFXMulti-touch Features
Touch Gestures
– Swipe, Scroll, Rotate, Zoom
Touch Event and Touch Points
The Pagination Control
Accommodating Fingers
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Please note
The following is intended to outline our general product
direction. It is intended for information purposes only, and
may not be incorporated into any contract. It is not a
commitment to deliver any material, code, or functionality,
and should not be relied upon in making purchasing
decisions. The development, release, and timing of any
features or functionality described for Oracle’s products
remains at the sole discretion of Oracle.
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Touch Gestures
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The Swipe Gesture
Commonly a finger drag in one direction
A single event is produced for the gesture
May be left, right, up, or down
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Handling the Swipe Gesture (SwipeEvent)
Note: Lambda expressions from JDK 8 are used here to simplify event handling
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Handling the Swipe Gesture (SwipeEvent)
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The Scroll Gesture
User turns mouse wheel, drags finger on
touch screen, etc.
Scroll events are continuously generated,
containing x/y position-related info
Events are pixel-based or character/line-
based
If inertia is supported, scroll events may
be generated after user quits scrolling
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Handling the Scroll Gesture (ScrollEvent)
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The Rotate Gesture
User typically drags two fingers around
each other
Rotate events are continuously generated,
containing angle-related info
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Handling the Rotate Gesture (RotateEvent)
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The Zoom Gesture
User typically drags two fingers apart or
closer together
Zoom events are continuously generated,
containing zoom factor-related info
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Handling the Zoom Gesture (ZoomEvent)
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Touch Event and Touch Points
Thomas Laenner - http://thomas.laenner.dk/
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Handling Touch (TouchEvent/TouchPoint)
A TouchEvent contains information about
a touch, including:
– Event type: Pressed, released, moved, or
stationary
– Touch points: The TouchPoint instances
that represent each of the points that were
touched
Each TouchEvent has a unique ID to identify the
events and touch points in a multi-touch action
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Responding to Touch Events
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A Touch Demo from the JavaFX Community
Touchyfxy app by Danno Ferrin http://speling.shemnon.com/
Touchfxy is an open source JavaFX
application developed by Danno Ferrin to
demonstrate gestures and touch events
To obtain Touchfxy, see Danno’s blog at
http://speling.shenmon.com
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The Pagination Control
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Using the Pagination Control
The Pagination control is used for
navigation between pages
Each page is a Node subclass
Numeric page indicators, or bullet-style
indicators, may be set with the style class STYLE_CLASS_BULLET
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Using the Pagination Control
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Accommodating Fingers
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Making UI Controls Larger for Touching
The default sizes for
JavaFX UI controls are
conducive to using a
mouse as a pointing device
An easy way to modify the
default sizes is to use CSS
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Making UI Controls Larger for Touching
Specify an -fx-font-size
property in the #root selector
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Start Here: http://javafxcommunity.com
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Download JDK 8 Early Access Release
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Visit Here: http://fxexperience.com
Tip: This site is authored by Oracle JavaFXEngineers
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Questions?
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Developing JavaFX Apps for Tablets(JavaFX Multi-touch Features)
Jim Weaver
Java Technology Ambassador
Oracle Corporation
@JavaFXpert
Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 1329
