[QGIS-trac] [Quantum GIS] #1323: Overview map - usability improvements

[Quantum GIS]

#1323: Overview map - usability improvements
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   Reporter:  smizuno                          |              Owner:  nobody       
       Type:  patch                            |             Status:  new          
   Priority:  minor: annoyance or enhancement  |          Milestone:  Version 1.0.0
  Component:  GUI                              |            Version:  HEAD         
   Keywords:                                   |   Platform_version:               
   Platform:  All                              |           Must_fix:  No           
Status_info:  0                                |  
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 Two minor problems with the overview map have been annoying me for a
 while: the hand cursor covers the extent rectangle in certain situations
 making it hard to position the rectangle accurately; when the extent
 rectangle is at minimum size it would drift to the right and down as you
 zoom in, also making it hard to position.

 The patch provided:

 1. Changes the mouse cursor hot spot to 0,0. Now, the rectangle can be
 positioned with its lower right corner in the space between the thumb and
 forefinger of the hand keeping the rectangle and what it is over visible.

 The idea is to position the extent rectangle, rather than the hand, over
 the desired area on the map.

 2.  Fix up the position calculations to account for the extent rectangle
 minimum size. Also includes tests to be sure the x,y values won't
 underflow when the location is adjusted.

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/1323>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats