Thanks Peter!
Alexandre
> On Apr 13, 2015, at 1:08 PM, Peter Uhnák <i.uh...@gmail.com> wrote:
>
> I think there is a bug in the exporter, because the canvas has a color (which
> is white and _not_ transparent).
> Normally you can set the color of the of the canvas (view canvas color: Color
> purple), but the default exporter (I assume you are exporting it via
> GT-inspector) is ignoring it.
> There is however second exporter which you can use
>
> ~~~~~~~~~~~~~~~~~~~~~
> |v fileName|
> v := RTView new.
> v canvas color: Color purple.
> v addAll: (RTEllipse new color: Color black; size: 30; elementsOn: (1 to:
> 10)).
> RTCircleLayout on: v elements.
>
> fileName := UITheme builder
> fileSave: 'Enter the PNG file name'
> extensions: #('png')
> path: nil.
> "fileName := '/tmp/test.png' asFileReference."
> fileName notNil ifTrue: [
> (DCTRCanvasExporter canvas: v canvas)
> format: #png;
> fileName: fileName fullName;
> export ].
>
> v
> ~~~~~~~~~~~~~~~~~~~~~~~
>
> You could also add the export code (with minor modification) to
> GLMRoassal2Presentation>>defaultActions but there seems to be some kind of
> bug that clears the content of the playground when executed from GLM, which
> is a big wtf, but maybe that's just my mixed up configuration.
>
> Peter
>
>
> On Mon, Apr 13, 2015 at 5:17 PM, Offray Vladimir Luna Cárdenas
> <off...@riseup.net> wrote:
> Hi,
>
> I have finally finished the first part of my visualization project of
> political discourses on Twitter. You can see the details here:
>
> http://mutabit.com/offray/static/blog/output/posts/visualizing-politicianspolitical-discourses-on-twitter.html
>
> (As you can see Pharo was not used to extract the data, just to scrap it,
> structure it and visualize it).
>
> The politicians tag cloud look nice if the background is white, because the
> png background is transparent, but if you share it on Twitter, the black
> background makes the tag cloud invisible. I could use image editing programs
> to change the background from transparent to white, but I would like to know
> if there is a way to make that change inside Pharo/Roasal.
>
> Thanks for all your support in making this ideas possible.
>
> Cheers,
>
> Offray
>
>
--
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Alexandre Bergel http://www.bergel.eu
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