I am a bachelor student at the University of Bern in the Software Composition Group. Under the supervision of Andrei Chiș I work on my thesis in the area of embeding visualisations in user insterface or moldable tools.
I contribute to Pharo and currently work on Brick, a project with the aim of bringing beautiful vector-based widgets on top of Bloc.
As part of Glamorous Toolkit team I am involved in building moldable tools and Pharo IDE.
Sparta is an almost stateless vector graphics API for Pharo that provides bindings to the Moz2D rendering backend. Moz2D is the extracted graphical engine from Mozilla Firefox compiled as standalone shared library together with the extern C bindings required to call the engine from Pharo.
Overview (All images are rendered using Sparta in Pharo)
Moz2D, and as result Sparta, has support of native OS graphic engines, as well as cross platform ones. On all platforms Sparta provides support of Cairo
. Additionally, high performant CoreGraphics and CoreGraphics Accelerated
on Mac OS and Direct2D
on Windows. In total Sparta supports 5 different rendering backends.
One of the biggest improvements compared to existing graphics engines from Pharo is advanced high quality text rendering with multi-language support.
The current Pharo text rendering engines draw a piece of text with one concrete font and style. If the font does not have an appropriate character, a stub glyph will be rendered instead. Sparta introduces a notion of font groups that allow us to achieve a smooth fallback font detection based on the selected font style, language and missing glyphs. Fallback font support requires more complex text measurement, as multiple fonts faces are involved to render a single piece of text.
Since Sparta is based on the Moz2D backend that was designed for web browsers, we can get support for a wide variety of filter primitives
. Sparta provides an ability to compose multiple filter primitives to get a single, advanced filter. For example, with the help of ColorMatrix and TableTransfer filters we can simulate some popular Instagram-like filters, for example Nashville, Inkwell or Brannan.
We should not forget that first of all Sparta is a vector graphics engine. It allows developers to create, fill and stroke custom paths and shapes. Together with gaussian blur, we can achieve astonishing results that were not possible before.
is a set of vector-based material design widgets for Pharo.
sponsored by ESUG as SummerTalk2015 project
search tool for Pharo is my second project which started based on ideas of Tudor Gîrba
. Later on Spotter got a small international community
Spotter won 2015 ESUG Innovation Technology Award
Pager for GT Inspector
My first project in the Software Composition Group was called Pager which supposed to improve
navigation in Moldable inspector
. As part of it I got familiar with Pharo language and started actively participated as contributor and community member.
- The Moldable Inspector. In Proceedings of the 2015 ACM International Symposium on New Ideas, New Paradigms, and Reflections on Programming & Software, Onward! 2015 p. to appear, ACM, New York, NY, USA, 2015. . DOI PDF →
- GTInspector: A Moldable Domain-Aware Object Inspector. In Proceedings of the Companion Publication of the 2015 ACM SIGPLAN Conference on Systems, Programming, and Applications: Software for Humanity, SPLASH ’15 p. to appear, ACM, New York, NY, USA, 2015. . DOI PDF →
- On Understanding How Developers Use the Spotter Search Tool. In Proceedings of 3rd IEEE Working Conference on Software Visualization - New Ideas and Emerging Results, VISSOFT-NIER’15 p. 145—149, IEEE, 2015. . PDF →
- Spotter: towards a unified search interface in IDEs. In Proceedings of the Companion Publication of the 2015 ACM SIGPLAN Conference on Systems, Programming, and Applications: Software for Humanity, SPLASH ’15 p. to appear, ACM, New York, NY, USA, 2015. . DOI PDF →