KDE Plasma Netbook
 The big road ahead




     Marco Martin
Components
●   Shell
●   Three containment types
    ●   SAL
    ●   Newspaper
    ●   Simple panel
●   One applet: curren...
Shell
●   Simpler than desktop
●   Exactly one main view and one panel
    ●   Future: multiscreen support?
●   UnDesktop:...
Search and Launch
         ●   Menus, more or less
             traditional are
             crowded and complex
         ...
Search and Launch
●   The two “Item views” aren't real item views
●   Similar to KDE3 itmviews, each item is exactly
    r...
Search and launch
●   Search is done by runners      [Desktop Entry]
                                   Name=Education
●  ...
Search and launch
●   Very flexible for distributors
●   Not so much for users
●   “aplications categories” don't follow w...
Search and launch: post 4.4
●   Drag and drop favourites reordering
●   Drag and drop from results to favourites
●   They ...
Newspaper
●   What content we would like to see on a computer?
    Basically 3 categories:
    ●   Ephemeral attention: in...
Newspaper
●   The newspaper activity type is designed
    to accomodate the first two types of
    content: it will be eno...
Newspaper
●   Small screen ->no room for “free” layout desktop
    widgets
●   No free positioning: items in ordered colum...
Newspaper
●   The layout is an horizontal
    QgraphicsLinearLayout of an arbitrary number
    of vertical layouts
●   It ...
Newspaper
●   How we represent the concept of “maybe
    important” information?
●   In 4.4, Plasma widgets gained a littl...
Newspaper: future
●   Useful for application dashboards: Skrooge and
    Kontact
    ●   Make application access row/colum...
Developing a newspaper widget
●   If standard API will be used, like Popupapplet
    and ScrollWidget sizing will be handl...
Future
●   For KDE SC 4.5:
    ●   Bugfixing
    ●   Bugfixing
    ●   Offline behaviour
    ●   Different form factors: t...
Questions?
Upcoming SlideShare
Loading in …5
×

Tokamak 4: KDE Plasma Netbook

1,306 views
1,227 views

Published on

introduction on KDE Palsma Netbook shell done at Tokamak 4 February 2010

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,306
On SlideShare
0
From Embeds
0
Number of Embeds
12
Actions
Shares
0
Downloads
4
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Tokamak 4: KDE Plasma Netbook

  1. 1. KDE Plasma Netbook The big road ahead Marco Martin
  2. 2. Components ● Shell ● Three containment types ● SAL ● Newspaper ● Simple panel ● One applet: current application control ● Not used in default setup: applet and dataengine to remote control SAL
  3. 3. Shell ● Simpler than desktop ● Exactly one main view and one panel ● Future: multiscreen support? ● UnDesktop: normal window -> handy for Plasma mobile too ● Panel: single, configurable location and being autohide ● More flexibility not needed here
  4. 4. Search and Launch ● Menus, more or less traditional are crowded and complex ● Trees aren't human friendly ● SAL is completely based on search or a completely flat menu
  5. 5. Search and Launch ● The two “Item views” aren't real item views ● Similar to KDE3 itmviews, each item is exactly represented by an icon ● Slow with big datasets ● Luckily runner result sets must be small to be useful ● Qt views aren't really up to the job ● We need real itemviews with QgraphicsView awesomeness, but until then, this does the job in the best way possible ● Optional “Horizontal” mode, intended for a small touchscreen shell, not to be user configurable
  6. 6. Search and launch ● Search is done by runners [Desktop Entry] Name=Education ● Favourites are saved Comment=Educational applications results of queries – restore Icon=applications-education is done by krunner too ● Problem: sync queries Type=Service ● The “menu” is done with X-KDE-ServiceTypes=Plasma/Sal/Menu krunner quries too X-KDE-PluginInfo-Name=plasma-sal- education ● They are desktop files describing the query X-Plasma-Sal-Query=education X-Plasma-Sal-Runner=services X-Plasma-Sal-Relevance=1
  7. 7. Search and launch ● Very flexible for distributors ● Not so much for users ● “aplications categories” don't follow what is decided on Kmenuedit, only freedesktop's categories ● Kcm are probably unwanted there ● Solution: tweak services runner, a KserviceGroup runner or using it directly
  8. 8. Search and launch: post 4.4 ● Drag and drop favourites reordering ● Drag and drop from results to favourites ● They are necessary for touchscreens ● Not done with “real” drag and drop, just moves items. ● For reordering it's better ● For drag between results and favourites real drag and drop could be necessary
  9. 9. Newspaper ● What content we would like to see on a computer? Basically 3 categories: ● Ephemeral attention: information that is useful but is enough to quickly look at it. Eg. Time, weather, microblogs. ● Maybe important: information that i need to halways have handy to quickly look at it usually enough but there could be an important item that will require attention: news feeds, email, appointments. ● Always important: content that always need my full atetion to be useful: watching videos, performing a search on the internet, writing a document
  10. 10. Newspaper ● The newspaper activity type is designed to accomodate the first two types of content: it will be enough to have a weather or a microblog widget there without ever needing a web browser or a specialized app. ● I can have the last news headers or last unread emails there. If it seems there is something important, i will ask for Kmail, Akregator, a web browser or whatever
  11. 11. Newspaper ● Small screen ->no room for “free” layout desktop widgets ● No free positioning: items in ordered columns ● No space -> scrolling view -> “infinite” vertical space ● Scrolling is done with Plasma::Scrollview: big widget inside a smaller one with ItemClipsChildrenToShape flag set ● Helped fixing several Qt bugs and a QtWebkit one ;) ● Can be either really fast or very slow
  12. 12. Newspaper ● The layout is an horizontal QgraphicsLinearLayout of an arbitrary number of vertical layouts ● It is NOT a grid because each widget has its own optiomal size, while is reasonable to give the same width to each one just compare the optimal height for Microblog and weather
  13. 13. Newspaper ● How we represent the concept of “maybe important” information? ● In 4.4, Plasma widgets gained a little “maximize” button ● Private class AssociatedApplicationManager ● Applet::setAssociatedApplication(QString) ● Applet::setAssociatedApplicationUrls(KUrl::List) ● Applet::runAssociatedApplication()
  14. 14. Newspaper: future ● Useful for application dashboards: Skrooge and Kontact ● Make application access row/column info: scripting or API? ● Free resizing of widgets in it? ● Advantages? ● Disadvantages? ● Offline behaviour ● caching in all dataengines ● better look for widgets without data
  15. 15. Developing a newspaper widget ● If standard API will be used, like Popupapplet and ScrollWidget sizing will be handled autmagically ● Scrollwidgets will try to enlarge as much as possible to avoid ugly “scrollbar in scrollbar” look
  16. 16. Future ● For KDE SC 4.5: ● Bugfixing ● Bugfixing ● Offline behaviour ● Different form factors: touchscreen friendlyness, on screen kryboard really working ● Beyond ● Plasma mobile: not reinventing the wheel, as much contact points as possible
  17. 17. Questions?

×