[Qgis-user] Adapt GVSig script to QGIS

[sinorfavela]

Hi all,

I prepared, with a huge help of the Spannish community, a script for GVSig
that save a view (in png) of each element into a layer centered in the
viewport. Now I'm using QGis and I need to adapt the same script. Anyone
could help me?


#---------><-- script start --><-----------------

from gvsig import *
from commonsdialog import *
from geom import *
from com.sun.jimi.core import Jimi
from org.gvsig.app import ApplicationLocator

import time

def centrarEnPunto(mapcontext, punto):
      # 1 - To obtain the extension of the map
      envelope = mapcontext.getViewPort().getAdjustedEnvelope()
      
      # 2 - To calcule the displacement of the map to center it in the
desired point
      movX = punto.getX()-envelope.getCenter(0)
      movY = punto.getY()-envelope.getCenter(1)

      # 3 - To calcule new corner of the view.
      minx = envelope.getLowerCorner().getX() + movX;
      miny = envelope.getLowerCorner().getY() + movY;
      maxX = envelope.getUpperCorner().getX() + movX;
      maxY = envelope.getUpperCorner().getY() + movY;

      # 4 - To define the new envelope of the view
      newenvelope = GeometryLocator.getGeometryManager().createEnvelope(
            minx, miny,
            maxX, maxY,
            Geometry.SUBTYPES.GEOM2D);

      # 5 - Asignamos el nuevo encuadre
      mapcontext.getViewPort().setEnvelope(newenvelope);

def main(*args):
  application = ApplicationLocator.getManager()
  docvista = currentView()
  capa = currentLayer()
  if docvista == None:
    msgbox("An active viewport is needed")
    return
  if capa == None:
    msgbox("An active layer with geometries is needed")
    return
    
  docwin = application.getDocumentWindow(docvista())
  n = 1
  for f in capa.features():
    
    # 6 - To select the element  
    capa.getSelection().deselectAll()
    capa.getSelection().select(f)

    # 7 - To center the view in the selected geometry
    centrarEnPunto(docvista.getMapContext(), f.geometry().centroid() )
    # 8- To wait a time to paint the view.
    time.sleep(2) 
    #9 - To obtain the image of the view
    img = docwin.getMapControl().getImage()
    pathname = "C:\\Users\\fmgm\\Desktop/kk/Barrios/Barrios%02d.png" % n
    #msgbox(pathname)
    Jimi.putImage(img,pathname)
    n += 1
  
#---------><-- script end --><-----------------





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