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Fixed #9204 -- Added `GIcon` overlay, allowing customization for icons of `GMarker` objects. Thanks to qingfeng for initial ticket/patch, and to prairiedogg for final implementation. 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10021 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Justin Bronn 2009-03-10 18:03:35 +00:00
parent 326c5813b9
commit 6aa5aacc86
4 changed files with 132 additions and 55 deletions
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2
django/contrib/gis/maps/google/__init__.py
View File

@ -57,5 +57,5 @@
version.
"""
from django.contrib.gis.maps.google.gmap import GoogleMap, GoogleMapSet
from django.contrib.gis.maps.google.overlays import GEvent, GMarker, GPolygon, GPolyline
from django.contrib.gis.maps.google.overlays import GEvent, GIcon, GMarker, GPolygon, GPolyline
from django.contrib.gis.maps.google.zoom import GoogleZoom

46
django/contrib/gis/maps/google/gmap.py
View File

@ -4,7 +4,7 @@ from django.template.loader import render_to_string
from django.utils.safestring import mark_safe
class GoogleMapException(Exception): pass
from django.contrib.gis.maps.google.overlays import GPolygon, GPolyline, GMarker
from django.contrib.gis.maps.google.overlays import GPolygon, GPolyline, GMarker, GIcon
# The default Google Maps URL (for the API javascript)
# TODO: Internationalize for Japan, UK, etc.
@ -20,9 +20,10 @@ class GoogleMap(object):
def __init__(self, key=None, api_url=None, version=None,
center=None, zoom=None, dom_id='map',
kml_urls=[], polygons=[], polylines=[], markers=[],
kml_urls=[], polylines=None, polygons=None, markers=None,
template='gis/google/google-single.js',
js_module='geodjango',extra_context={}):
js_module='geodjango',
extra_context={}):
# The Google Maps API Key defined in the settings will be used
# if not passed in as a parameter. The use of an API key is
@ -57,25 +58,21 @@ class GoogleMap(object):
self.kml_urls = kml_urls
# Does the user want any GMarker, GPolygon, and/or GPolyline overlays?
self.polygons, self.polylines, self.markers = [], [], []
if markers:
for point in markers:
if isinstance(point, GMarker):
self.markers.append(point)
overlay_info = [[GMarker, markers, 'markers'],
[GPolygon, polygons, 'polygons'],
[GPolyline, polylines, 'polylines']]
for overlay_class, overlay_list, varname in overlay_info:
setattr(self, varname, [])
if overlay_list:
for overlay in overlay_list:
if isinstance(overlay, overlay_class):
getattr(self, varname).append(overlay)
else:
self.markers.append(GMarker(point))
if polygons:
for poly in polygons:
if isinstance(poly, GPolygon):
self.polygons.append(poly)
else:
self.polygons.append(GPolygon(poly))
if polylines:
for pline in polylines:
if isinstance(pline, GPolyline):
self.polylines.append(pline)
else:
self.polylines.append(GPolyline(pline))
getattr(self, varname).append(overlay_class(overlay))
# Pulling any icons from the markers.
self.icons = [marker.icon for marker in self.markers if marker.icon]
# If GMarker, GPolygons, and/or GPolylines are used the zoom will be
# automatically calculated via the Google Maps API. If both a zoom
@ -105,6 +102,7 @@ class GoogleMap(object):
'zoom' : self.zoom,
'polygons' : self.polygons,
'polylines' : self.polylines,
'icons': self.icons,
'markers' : self.markers,
}
params.update(self.extra_context)
@ -175,6 +173,11 @@ class GoogleMapSet(GoogleMap):
else:
self.maps = args
# Creating the icons sequence from every map in this set.
self.icons = []
for map in self.maps:
self.icons.extend(map.icons)
# Generating DOM ids for each of the maps in the set.
self.dom_ids = ['map%d' % i for i in xrange(len(self.maps))]
@ -205,6 +208,7 @@ class GoogleMapSet(GoogleMap):
params = {'js_module' : self.js_module,
'dom_ids' : self.dom_ids,
'load_map_js' : self.load_map_js(),
'icons' : self.icons,
}
params.update(self.extra_context)
return render_to_string(self.template, params)

70
django/contrib/gis/maps/google/overlays.py
View File

@ -165,6 +165,72 @@ class GPolyline(GOverlayBase):
def js_params(self):
return '%s, "%s", %s, %s' % (self.latlngs, self.color, self.weight, self.opacity)
class GIcon(object):
"""
Creates a GIcon object to pass into a Gmarker object.
The keyword arguments map to instance attributes of the same name. These,
in turn, correspond to a subset of the attributes of the official GIcon
javascript object:
http://code.google.com/apis/maps/documentation/reference.html#GIcon
Because a Google map often uses several different icons, a name field has
been added to the required arguments.
Required Arguments:
varname:
A string which will become the basis for the js variable name of
the marker, for this reason, your code should assign a unique
name for each GIcon you instantiate, otherwise there will be
name space collisions in your javascript.
Keyword Options:
image:
The url of the image to be used as the icon on the map defaults
to 'G_DEFAULT_ICON'
iconsize:
a tuple representing the pixel size of the foreground (not the
shadow) image of the icon, in the format: (width, height) ex.:
GIcon('fast_food',
image="/media/icon/star.png",
iconsize=(15,10))
Would indicate your custom icon was 15px wide and 10px height.
shadow:
the url of the image of the icon's shadow
shadowsize:
a tuple representing the pixel size of the shadow image, format is
the same as ``iconsize``
iconanchor:
a tuple representing the pixel coordinate relative to the top left
corner of the icon image at which this icon is anchored to the map.
In (x, y) format. x increases to the right in the Google Maps
coordinate system and y increases downwards in the Google Maps
coordinate system.)
infowindowanchor:
The pixel coordinate relative to the top left corner of the icon
image at which the info window is anchored to this icon.
"""
def __init__(self, varname, image=None, iconsize=None,
shadow=None, shadowsize=None, iconanchor=None,
infowindowanchor=None):
self.varname = varname
self.image = image
self.iconsize = iconsize
self.shadow = shadow
self.shadowsize = shadowsize
self.iconanchor = iconanchor
self.infowindowanchor = infowindowanchor
class GMarker(GOverlayBase):
"""
A Python wrapper for the Google GMarker object. For more information
@ -184,7 +250,7 @@ class GMarker(GOverlayBase):
return render_to_response('mytemplate.html',
{'google' : GoogleMap(markers=[marker])})
"""
def __init__(self, geom, title=None, draggable=False):
def __init__(self, geom, title=None, draggable=False, icon=None):
"""
The GMarker object may initialize on GEOS Points or a parameter
that may be instantiated into a GEOS point. Keyword options map to
@ -209,6 +275,7 @@ class GMarker(GOverlayBase):
# TODO: Add support for more GMarkerOptions
self.title = title
self.draggable = draggable
self.icon = icon
super(GMarker, self).__init__()
def latlng_from_coords(self, coords):
@ -217,6 +284,7 @@ class GMarker(GOverlayBase):
def options(self):
result = []
if self.title: result.append('title: "%s"' % self.title)
if self.icon: result.append('icon: %s' % self.icon.varname)
if self.draggable: result.append('draggable: true')
return '{%s}' % ','.join(result)

7
django/contrib/gis/templates/gis/google/google-base.js
View File

@ -1,2 +1,7 @@
{% block vars %}var geodjango = {};{% endblock %}
{% block vars %}var geodjango = {};{% for icon in icons %}
var {{ icon.varname }} = new GIcon(G_DEFAULT_ICON);
{% if icon.image %}{{ icon.varname }}.image = "{{ icon.image }}";{% endif %}
{% if icon.shadow %}{{ icon.varname }}.shadow = "{{ icon.shadow }}";{% endif %} {% if icon.shadowsize %}{{ icon.varname }}.shadowSize = new GSize({{ icon.shadowsize.0 }}, {{ icon.shadowsize.1 }});{% endif %}
{% if icon.iconanchor %}{{ icon.varname }}.iconAnchor = new GPoint({{ icon.iconanchor.0 }}, {{ icon.iconanchor.1 }});{% endif %} {% if icon.iconsize %}{{ icon.varname }}.iconSize = new GSize({{ icon.iconsize.0 }}, {{ icon.iconsize.1 }});{% endif %}
{% if icon.infowindowanchor %}{{ icon.varname }}.infoWindowAnchor = new GPoint({{ icon.infowindowanchor.0 }}, {{ icon.infowindowanchor.1 }});{% endif %}{% endfor %}{% endblock %}
{% block functions %}{% endblock %}