[Qgis-developer] API functions

[Martin Dobias]

On 6/28/06, Mathieu Ouimet <noryoku at gmail.com> wrote:
> Hi,
>
> Is it possible to obtain a position on the map ( well-known text (wkt) or
> well-known binary (wkb) ) by the click of the mouse in the map canvas???  Is
> there a fonction in the Qgis API who does that??

Hi Mathieu,

yes this is possible in current development version (which will be
version 0.8). You can create a plugin with your custom class derived
from QgsMapCanvasTool which will handle clicks on map canvas and use
the position for any use you might want.

>
> Also, with a position in the wkt or wkb format, is it possible to zoom to
> the position.  Is there a fonction in the Api like
> "zoomToPosition(position)" where the position is a wkt or wkb.

You can use function QgsMapCanvas::setExtent to change extent of the
map canvas. For conversion from/to wkt/wkb use class QgsGeometry.


Martin

>
> Thx a lot :)
>
> --
> Mathieu Ouimet
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