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Spec 2.0: The next step on desktop UI

Pharo
Pharo
PharoMaître de conférences at Pharo

Spec 2.0: The next step on desktop UI Talk from PharoDays 2019

Spec 2.0: The next step on desktop UI

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Spec 2.0
The next step on desktop UI
Spec 2 is a team work
–Most requested feature every ESUG (personal survey)
“How to do a desktop application with Pharo?”
How can you do an Application today?
• Morphic
• Spec 1.0
• Glamour
• … others
There has to be only one!
(and it has to be easy to use)
Why Spec?
• Modular design
• Testable
• Morphic is low-level: powerful, but too much when doing a
regular application (same applies to bloc, by the way)
• Spec can cover Glamour specifics easier than Glamour
covering Spec specifics
Ad

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Spec 2.0: The next step on desktop UI

  • 1. Spec 2.0 The next step on desktop UI
  • 2. Spec 2 is a team work
  • 3. –Most requested feature every ESUG (personal survey) “How to do a desktop application with Pharo?”
  • 4. How can you do an Application today? • Morphic • Spec 1.0 • Glamour • … others
  • 5. There has to be only one! (and it has to be easy to use)
  • 6. Why Spec? • Modular design • Testable • Morphic is low-level: powerful, but too much when doing a regular application (same applies to bloc, by the way) • Spec can cover Glamour specifics easier than Glamour covering Spec specifics
  • 8. A composed Presenter ComposablePresenter ComposablePresenter Layout A Layout B LayoutC ComposablePresenter Layout A Layout B LayoutC ComposablePresenter Layout A Layout B LayoutC ComposablePresenter Layout A Layout B LayoutC Layout A Layout B LayoutC
  • 12. The reality • Specs mixed with morphs/ adapters • Presenters design are too contaminated with morph design • Applications need to “jump” layers to do what they need Application Spec MorphicAdapter
  • 13. Spec 2.0! • The design is already there: Spec 2.0 is about making original Spec design to work properly • Remove interpreter (because is not needed) • All Pharo tools needs to be developed with Spec 2.0 - Having a base UI design for everything - Allow to change backends without rewriting the full UI
  • 14. Some new (or/and revisited) concepts…
  • 15. Presenters • A Presenter is the base “presenting” UI mechanism. - They can be composed! • All existing presenters has been revisited (or they will be) • Some of them has been deprecated! (Tree, TabManager…) • Some others has even added (Table, TreeTable, ToolBar, …)
  • 16. Layouts • Instead one big do-it-all layout, small layouts with well defined function - Box (vertical, horizontal) - Paned (vertical, horizontal) - Grid - Scrollable - Others to come • Also layouts can be composed! • Current SpecLayout will be deprecated (and removed)
  • 17. Application • Entry point of any application (including Pharo) • Window flow • Common resources - “UI Manager” for standard dialogs - Icons/images - Theme • Backend
  • 18. Backends • Morphic Backend • Gtk3 Backend • Future: Bloc backend
  • 26. Spec 2.0 summary • Easy way to create REAL desktop applications! • Multiple backends (starting with Morphic and Gtk3, Bloc will be added later) • For Pharo: Easy migration from one backend to another • Coming SOON (™) - Pharo 8 - There will be a migration path (most cases are compatible or straightforward)
  • 27. Extra: Why GTK3? • Cross platform • Open source (LGPL) • Mature • Popular • C bindings
  • 28. Extra: Missing parts • Finish missing/incomplete presenters - Rich text presenter, … - Some layouts • Stabilisation • Pass on API • Pass on features • Headless VM and image-side parts
  • 29. Extra: The place of bloc • Replacement of Morphic (not Spec) • Low level: Applications will still need some higher level layer