You could also have two different TreeMap: one
that use the edges to do the nesting, and another that use the nesting.
There is no problem to include your layout in Mondrian once it is stable and properly
tested.
I will probably use your layout for Roassal, a visualization engine I am working on.
Alexandre
On 28 Feb 2012, at 12:02, Dennis Schenk wrote:
Hi,
I'm working on a treemap layout in Mondrian. I created the basic functionality but am
far from finished.
For the current progress see the following screenshots:
http://cl.ly/342z261g021c3X1j3X2b - A visualization of a very simple java system
(
https://github.com/mircealungu/SimpleSample)
http://cl.ly/3H3x1K1y3O3j430S0a2z - A visualization of FAMIX itself.
The following is an example of how one sets up the layout:
viewTreemapOn: view
view nodes: self nodes.
view edges: self nodes
from: [ :each | each ]
toAll: [ :each | each children ].
view layout: (MOTreeMapLayoutIncubation withWeightBlock: [ :e |
| model |
model := e model.
model isNil ifTrue: [
0.
]
ifFalse: [
e model entity numberOfLinesOfCode.
].
]).
The tree structure is given by the edges definition. The layout is created with a weight
block (lines of code here, but could be anything).
At the end I'd like to have something like:
http://cl.ly/3v1L3O2a2n1H1C2x3J0V - TreeMap in Softwarenaut in VisualWorks.
This is the first code that I'm writing with Mondrian, so I'm sure it could be
improved in many areas. If anyone sees a problem with how I set up the layout. please do
tell. If anyone wants to look at the code in detail please take a look at
MOTreeMapLayoutIncubation in my Softwarenaut repository (I'm creating the tree map
layout as part of the Softwarenaut port to Pharo):
MCHttpRepository
location: 'http://www.squeaksource.com/Softwarenaut'
user: ''
password: ''
The layout is currently in this repo, if it is more mature, it would be cool to add it to
Mondrian itself. I'd like to make it as generic as possible.
Now for some specific questions:
The red colors you see in the screenshots is actually a bug. What I would like to do is
only color the leaf nodes, but somehow (my guess is, it has something to do with shape
caching?), it also colors the containment blocks.
The way I do it is, while ging through the nodes (MONode) to draw them
If it is a leaf
node shape fillColor: ((Color fromString: '#ff0000') alpha: 0.1).
If it is a containment block:
node shape fillColor: (Color fromString: '#eeeeee').
But somehow all shapes (except the root node) are colored with the red translucent color.
Does anyone have an idea why this could be the case?
In general: I'm doing the styling of the nodes (also tried to add some interactivity)
directly inside the layout, but I'm not sure if this is the Mondrian way to do this,
since normally shape definitions and interaction is defined when creating the view. Is
this okay? Or should I do this in another way?
My thought was that I'd like to have a treemap layout with default, nice looking
interactions, colors etc. without having to define them outside, when defining the view,
so it needs as little setup as possible.
Any inputs in general are greatly appreciated.
Cheers,
Dennis
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