Concerning the second part, have a look at Roassal Easel > Example >
ROExample > basic > composing
and also
(btw Alexandre, outter should be spelled with a single "t")
cheers -ben
roberto.minelli(a)usi.ch wrote:
Hi,
It's me again! ;) I'm building a calendar visualization inspired by
http://www.xconomy.com/wordpress/wp-content/images/2012/11/skeuo-calendar.p….
Each node of visualization will be a month that contains:
- An header (with (a) the name of the month and (b) the headers for the columns
containing 'Mon' 'Tue' 'Wed' etc.)
- Inner nodes for the days
I created such visualization without the headers and now I'm wondering which is the
clearer solution to add them.
As I wrote in the previous mail, I'm using nodes:forEach: to generate the
visualization with inner nodes.
The first solution that came to my mind is to nest another nodes:forEach to draw the
headers. Let me explain:
view nodes: months forEach: [ :month |
…
headers := OrderedCollection with: month name .
headers addAll: #('Sun' 'Mon' 'Tue' 'Wed' 'Thu'
'Fri' 'Sat' ).
view nodes: headers forFirst: [ :header |
'The first header is an instance of the Month class, which is used as a key in the
Dictionary that represents my data.'
'Thus I use that to recover the days for the current month from the
dictionary'
days := myData at: header.
view nodes: days.
]
]
Notice that nodes:forFirst: is a message I implemented that works like nodes:forEach: but
only considers the first node of nodes and attaches the inner nodes only to that element.
I feel this solution is a bit of a hack. How would you do it in a cleaner way?
____
Another question concerns drag & drop. I set my inner nodes (i.e, days) to be not
draggable since I do not want the user to drag them, but I want the user to be able to
drag the entire shape representing a month (i.e., outer node). As an effect to drag the
month you should explicitly start the dragging from the outer node but this is counter
intuitive. I'd like to be able to drag the month also from its inner nodes (days).
Is there a way to propagate the interaction and from the inner nodes I can drag the
container shape?
____
Thanks in advance,
Roberto
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