[QGIS-trac] [Quantum GIS] #3008: Reimplement map decorations as annotation widgets

[Quantum GIS]

#3008: Reimplement map decorations as annotation widgets
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   Reporter:  timlinux                       |              Owner:  timlinux     
       Type:  patch                          |             Status:  new          
   Priority:  minor: annoyance               |          Milestone:  Version 1.6.0
  Component:  MapCanvas                      |            Version:  Trunk        
   Keywords:  mapcanvas map widget scalebar  |   Platform_version:               
   Platform:  All                            |           Must_fix:  No           
Status_info:  0                              |  
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 Our plugins menu is cluttered already and some of the plugins would be
 better suited to being implemented as core functionality (e.g. scalebar,
 north arrow etc. For a long time I have wanted to implement the idea of
 mapwidgets - small widgets that can be dragged and arbitrarily placed on
 the map. Marco's mapannotation tools actually take us towards that idea
 nicely so I thought I would start reimplementing some decorations as
 subclasses of QgsMapAnnotation to get a feel of how suitable the api would
 be for generic widget api.

 I'm attaching my first proof of concept for this (warning its still rough
 around the edges) which implements the scalebar as a widget. My idea to
 build out the widgets list at the upcoming hackfest in Wroclaw, Poland.

 Also we should give some thought to making the implementation more generic
 (e.g. a special type of plugin?) so that it is not needed to do so many
 changes to app and gui for each new widget type.

 I welcome comments and suggestions and will update the patch (with aim
 including in 1.6 if I can get it all polished nicely).

 Tim

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/3008>
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