ROOT: Native Graphics on Mac OS X

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ROOT: native graphics on Mac OS X T. Pocheptsov 1) 1) CERN, PH-SFT – European Organization for Nuclear Research, Geneva, Switzerland; JINR – Joint Institute for Nuclear Research, Dubna, Russian Federation. The ROOT’s GUI classes support an extensive and rich set of widgets. These widget classes interface to the underlying graphics system and OS via abstract classes - TVirtualX and TSystem. Concrete versions were implemented for X11/*nix, Win32, Qt and now Mac OS X: ROOT GUI applications (browsers, canvases, treeplayers, event displays) and user GUI applications. ROOT GUI framework (windows/widgets/controls classes) Abstraction layer: TSystem , TVirtualX TMacOSXSystem: event handling/dispatch (mouse/ TGCocoa/TGQuartz : 2D/3D graphics (“graphical keyboard/geometry change/repaint events, I/O activity, back-end”), window management, font management, etc.) cursors, drag and drop, etc. New graphical back-end for Mac OS X: Components (implementation): • Window manager uses Apple’s Cocoa • Is a complete implementation of TVirtualX interface; framework (object oriented framework written • uses native APIs directly, no external X11-server application in Obj-C) and Apple’s Quartz Window (XQuartz) required; Server API. • 2D graphics – font, line, polygon anti-aliasing; • I/O activity, GUI events, event loop - based • 2D graphics – transparency and gradients; on Cocoa and Apple’s Core Foundation • “retina friendly”; framework • can mix with native GUI-controls (Apple’s Aqua UI) • “Event translator” – translates native GUI • In future can support multi-threaded GUI; events into “X11-like” events/emulates X11 • Implemented in Objective-C++ events (X11 events required by ROOT’s GUI to work) Availability: • 2D graphics – implemented with Apple’s • Mac OS X v >= 10.7 Quartz 2D API, Core Image and Core Text • XCode >= 4.x (Apple-provided clang version??) frameworks • Part of ROOT v. 5-34 (--enable-cocoa configure option) • 3D graphics (OpenGL): window/context/ • Default in the trunk version (still can be disabled with – pixel format management – Cocoa disable-cocoa). framework. Examples: ROOT GUI OpenGL Transparency, gradients For more information see: http://root.cern.ch For any questions please use following address: [email protected] .

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