Marble/Marble 2.0: Difference between revisions

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** Qt Quick 2.0 related interactive classes
** Qt Quick 2.0 related interactive classes
** Dependency to QtQuick, libMarbleMap, libMarbleCore
** Dependency to QtQuick, libMarbleMap, libMarbleCore
* Further possible ones (see also plugins below): MarbleRouting, MarbleTours, MarbleMapEditor


== Header normalization ==
== Header normalization ==
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* Require KDE Frameworks 5 (optional, but kdelibs 4.x not supported)
* Require KDE Frameworks 5 (optional, but kdelibs 4.x not supported)
* Require Qt Quick 2.0 (optional, but Qt Quick 1.1 not supported)
* Require Qt Quick 2.0 (optional, but Qt Quick 1.1 not supported)
== Plugin sanitization ==
* Clearly split between the loading mechanism and the interface (API) such that extensions can be realized both inside a library and via plugins without hassles (emphasis on without hassles)
* Deleting plugins should be possible and remove the feature provided by it, but it should not be advertized as a feature
* No mandatory plugins (e.g. KML parsing). Mandatory "plugins" must be part of a library
* Decide on criteria what to realize as plugins and what as modules (libraries). E.g. only do plugins where a common API is easily identified and at least three plugins of that type are provided by Marble itself

Revision as of 13:07, 19 May 2014

Refactoring goals towards a Marble 2.0 version.

Marble Library Split

Split libmarblewidget into several libraries:

  • libMarbleCore
    • Non-interactive classes, e.g. geodata, file parsing
    • No dependency to QWidgets or Qt Quick
  • libMarbleMap
    • Interactive, UI toolkit independent classes, e.g. layers, graphicsview
    • Dependency to MarbleCore
    • No dependency to QWidgets or Qt Quick
  • libMarbleWidgets
    • QWidget related interactive classes
    • Dependency to QWidget, libMarbleMap, libMarbleCore
  • libMarbleQuick
    • Qt Quick 2.0 related interactive classes
    • Dependency to QtQuick, libMarbleMap, libMarbleCore
  • Further possible ones (see also plugins below): MarbleRouting, MarbleTours, MarbleMapEditor

Header normalization

  • The header structure in src/lib/ should match the exported headers in include/. No "flattening" as it happens currently where e.g. marble/geodata/* is copied to /marble/.
  • During compilation, the subdirectories of marble/ are not added to the compiler search path anymore, so #include statements need to use the full path marble/$module/$class.h for files outside their directory.
  • Headers follow the directory structure marble/$module/$path, where $path is either a filename or a directory + filename, but not deeper nested

Qt version dependency bump

  • Require at least Qt 5.0 to avoid a maintenance nightmare
  • Require KDE Frameworks 5 (optional, but kdelibs 4.x not supported)
  • Require Qt Quick 2.0 (optional, but Qt Quick 1.1 not supported)

Plugin sanitization

  • Clearly split between the loading mechanism and the interface (API) such that extensions can be realized both inside a library and via plugins without hassles (emphasis on without hassles)
  • Deleting plugins should be possible and remove the feature provided by it, but it should not be advertized as a feature
  • No mandatory plugins (e.g. KML parsing). Mandatory "plugins" must be part of a library
  • Decide on criteria what to realize as plugins and what as modules (libraries). E.g. only do plugins where a common API is easily identified and at least three plugins of that type are provided by Marble itself