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Past, Present & Future
Alexander Nyßen
itemis AG
Past
It all began...
... at IBM, of course (etools).
Image: winnond / FreeDigitalPhotos.net
It‘s Birthday Time!
Draw2d & GEF (MVC)
• Initial contribution of Draw2d & GEF (MVC) by IBM in 2002.
GEF (MVC) - an interactive model-view-cont...
Draw2d & GEF (MVC)
GEF 3.0 (2004)
• Most of the features that make up GEF where introduced:
• Rulers & Guides, Grid
• Snap-to-Geometry, Cente...
But that's not all ...
Image: renjith krishnan / FreeDigitalPhotos.net
Zest
• Initial contribution of Zest by University of Victoria and IBM
Centre for Advanced Studies as part of Mylyn in 2005...
Zest
GEF 3.4 / Zest 1.0 (2008)
• Modularization into two
components:
• Draw2d
• GEF (MVC)
• Integration of Zest as third
compon...
GEF 3.5 / Zest 1.1 (2009)
• Support for SWT line style attributes (Draw2d)
• Advanced Graphics support (Draw2d)
• Curved C...
GEF 3.6 / Zest 1.2 (2010)
• Improved clipping via IClippingStrategy (Draw2d)
• Scrollable Feedback support (GEF)
GEF 3.7 / Zest 1.3 (2011)
• Refactoring of Draw2d geometry classes (inconsistencies)
• Refactoring of FlowLayout and Toolb...
Present
GEF - Facts & Figures
• 10 committers (5 currently active, 2 new in 2012)
• Alex Boyko
• Anthony Hunter (Project Lead)
• A...
GEF 3.8 / Zest 1.4 (2012)
• Migration of source code repository from CVS to Git
• Migration of release engineering infrast...
GEF 3.8 / Zest 1.4
• Currently we have around ~400 open bugs/CRs.
• Our quality of processing is improving...
• A lot of i...
Zest 2 (since 2010)
• A provisional Zest 2 component was initiated in 2010, to
develop the next generation Zest API.
• Dev...
Zest 2 - New Features
• Dot 4 Zest
• Cloudio
GEF4 (since 2011)
• GEF4 was initiated - according to Zest 2 - to develop the next
generation API for Draw2d and GEF (MVC)...
GEF4 Geometry*
• No low and high precision, just a single double-precision API
(with built-in imprecision for comparisons)...
GEF4 Planar Geometry*
*) CQ 6363 incorporated
GEF4 Geometry - Examples*
*) CQ 6363 incorporated
Future
GEF4 + Zest 2 = GEF4
Unification of both approaches after Juno!
GEF4 - A Unified Approach
• A unified approach with a shared code base and a
common namespace (org.eclipse.gef4) for all plu...
SomeTopics for GEF4
• Re-thinking current componentization
• Support for the E4 application model
• Support for rotation a...
Just one more thing...
• It's an often requested feature to use GEF in the web.
• This is out of scope for the GEF project...
ThankYou! Questions?
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GEF - Past, Present, and Future

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Talk at EclipseCon North America 2012, Reston (VA)

Published in: Software
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GEF - Past, Present, and Future

  1. 1. Past, Present & Future Alexander Nyßen itemis AG
  2. 2. Past
  3. 3. It all began... ... at IBM, of course (etools). Image: winnond / FreeDigitalPhotos.net
  4. 4. It‘s Birthday Time!
  5. 5. Draw2d & GEF (MVC) • Initial contribution of Draw2d & GEF (MVC) by IBM in 2002. GEF (MVC) - an interactive model-view-controller framework, which fosters the implementation of SWT- based tree editors and Draw2d-based graphical editors (and views) for the Eclipse UI Workbench. Draw2d - 2D rendering framework; lightweight extension to SWT. May be used stand-alone or as visualization technology for GEF (MVC).
  6. 6. Draw2d & GEF (MVC)
  7. 7. GEF 3.0 (2004) • Most of the features that make up GEF where introduced: • Rulers & Guides, Grid • Snap-to-Geometry, Centered Resize, Match Size , Constraint Move and Resize, Cloning, Panning • PaletteView, Flyout Palette, Palette Stacks • Shortest Path Connection Routing • Since then, the APIs of Draw2d and GEF (MVC) have stayed backwards compatible.
  8. 8. But that's not all ... Image: renjith krishnan / FreeDigitalPhotos.net
  9. 9. Zest • Initial contribution of Zest by University of Victoria and IBM Centre for Advanced Studies as part of Mylyn in 2005. • Joined in on GEF as third component with the 3.4 release in 2007. Zest - a visualization toolkit based on SWT and Draw2d to support the implementation of views with automatic or semi-automatic layout for the Eclipse Workbench UI.
  10. 10. Zest
  11. 11. GEF 3.4 / Zest 1.0 (2008) • Modularization into two components: • Draw2d • GEF (MVC) • Integration of Zest as third component. • GEF releng moved to common modeling build tools. • Redesigned UI for Palette (GEF)
  12. 12. GEF 3.5 / Zest 1.1 (2009) • Support for SWT line style attributes (Draw2d) • Advanced Graphics support (Draw2d) • Curved Connections (Zest) • Nested content provider (Zest)
  13. 13. GEF 3.6 / Zest 1.2 (2010) • Improved clipping via IClippingStrategy (Draw2d) • Scrollable Feedback support (GEF)
  14. 14. GEF 3.7 / Zest 1.3 (2011) • Refactoring of Draw2d geometry classes (inconsistencies) • Refactoring of FlowLayout and ToolbarLayout (introduced OrderedLayout) • Refactoring of LayoutEditPolicies • Constraint Size-On-Drop Creation • Additional Marquee Selection strategies • Refactoring of UndoablePropertySheetPage (undo/redo support while editor is inactive; opened for subclassing)
  15. 15. Present
  16. 16. GEF - Facts & Figures • 10 committers (5 currently active, 2 new in 2012) • Alex Boyko • Anthony Hunter (Project Lead) • Alexander Nyßen • Cherie Revells • Fabian Steeg • 3 Git repositories (gef, gef4, zest) • 4 Hudson jobs (gef-nightly-tycho, gef4-nightly-tycho, gef-zest-nightly, gef-zest-integration) • Ian Bull • Marc Gobeil • Nick Boldt • Stephan Schwiebert • Zoltan Ujhelyi
  17. 17. GEF 3.8 / Zest 1.4 (2012) • Migration of source code repository from CVS to Git • Migration of release engineering infrastructure from common modeling build to Tycho/Hudson: • gef-nightly-tycho build on hudson.eclipse.org • nightly builds as well as weekly integration builds are now publicly available • Bug fixes, clean-ups, no major new-and-noteworthy features
  18. 18. GEF 3.8 / Zest 1.4 • Currently we have around ~400 open bugs/CRs. • Our quality of processing is improving... • A lot of issues will not be resolvable without breaking API. Metric calculated according to http://bugzillametrics.sourceforge.net/Process_Quality_Eclipse.pdf • How long does it take to fix a new CR? • How often has a fixed CR to be reopened? • How friction-less is the processing of CRs? 0" 0,5" 1" 1,5" 2" 2,5" 3" 3,5" 2005" 2006" 2007" 2008" 2009" 2010" 2011" 2012*" D.#Quality#of#Processing#the#CRs# GEF" Pla3orm"
  19. 19. Zest 2 (since 2010) • A provisional Zest 2 component was initiated in 2010, to develop the next generation Zest API. • Development takes place in parallel to maintenance of Zest 1.x in its own Git repository. • API is regarded to be provisional up to the final graduation. • Results are not provided as part of GEF 3.x / Zest 1.x but published via Eclipse Marketplace.
  20. 20. Zest 2 - New Features • Dot 4 Zest • Cloudio
  21. 21. GEF4 (since 2011) • GEF4 was initiated - according to Zest 2 - to develop the next generation API for Draw2d and GEF (MVC). • Development is to take place in parallel to maintenance of Draw2d / GEF (MVC) 3.x in its own repository. • Results are not provided provided as part of GEF 3.x / Zest 1.x but on own update-sites. • Plan: • Create new double-precision Geometry API before 3.8. • Migrate the Draw2d and GEF (MVC) 3.8 code base afterwards.
  22. 22. GEF4 Geometry* • No low and high precision, just a single double-precision API (with built-in imprecision for comparisons). • Different geometric abstractions for different purposes: • Euclidean (Vector, Straight) • Projective+ (Vector3D+, Straight3D+) • Planar+ (IGeometry+, ICurve, IShape, IPolyCurve, IPolyShape) +) If you have a good idea how to alternatively name these abstractions, please let me know...*) CQ 6363 incorporated
  23. 23. GEF4 Planar Geometry* *) CQ 6363 incorporated
  24. 24. GEF4 Geometry - Examples* *) CQ 6363 incorporated
  25. 25. Future
  26. 26. GEF4 + Zest 2 = GEF4 Unification of both approaches after Juno!
  27. 27. GEF4 - A Unified Approach • A unified approach with a shared code base and a common namespace (org.eclipse.gef4) for all plug-ins. • Advantages: • Clear distinction between GEF proper as the production component and GEF4 as the provisional one • Chance to not only refactor GEF components but the componentization itself, which is only "historically" justified.
  28. 28. SomeTopics for GEF4 • Re-thinking current componentization • Support for the E4 application model • Support for rotation and other transformations • Support for B-Spline-connections • Better integrability of native SWT widgets • Multi-touch gestures support • Revision of the command framework • Revision of connection handling (clipping container) • Various renamings and restructurings on the detail level...
  29. 29. Just one more thing... • It's an often requested feature to use GEF in the web. • This is out of scope for the GEF project itself, while GEF4 might do what is possible to better enable it. • Ports based on GEF 3.x / Zest 1.x: • RAP Incubator - GEF-Port • Architexa: http://www.codemaps.org/e/Eclipse_GEF • GEFGWT (GWT): http://gefgwt.org/ • There is an active discussion on gef-dev mailing list. Participate!
  30. 30. ThankYou! Questions?

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