Good questions. I've had experience with some of these, building a GUI
designer. At this stage customers will use it to build input forms.
Later it is supposed to grow into sort of a report designer.
The core is a custom component containing a ScrollPane containing a
content pane. And that pane has several transparent layers spanning the
whole (scrolled) content area. There are layers for a grid, the content
items, selection, decoration, and hints. There've been rough edges and
workarounds but I am quite happy with the result. This would have been
more difficult in Swing.
On 24.07.2013 01:21, Daniel Zwolenski wrote:
- How best to represent large numbers of complex shapes efficiently, and when
to add shapes to the scene (add all and let jfx clip, or manually work out what
should be showing, etc)
Fortunately my scenes are usually not that complex. A few 10k nodes can
be expected.
- How best to handle font scaling and image scaling when rendered in a zoomed
in/out viewport
I have not looked into this. I guess it would be relevant for us to
support touch.
- How best to do panning and zooming with dynamic level of detail
Dynamic level of detail is another important one. We may need to address
this for a different component, showing tons of data which can be zoomed
in/out.
- How best to do the top level display in terms of panes vs regions vs canvas,
vs whatever, how to manage overlays and layers (sharing same coordinate space,
etc)
- How best to do picking, mouse overs, dragging across the 'display'
- How best to do infinite or dynamic bounds so you can add and move shapes and
the scrolling adjusts accordingly.
As described above, several pane/region based layers in a scrollpane
work satisfactorily for us. Bounds are already dynamic, simply resize
the ScrollPane content node. Mouse picking, dragging, etc. works with
mouse event filters on the scrolled content node.
Werner
