@RichardSmith Shortest script
import console
from objc_util import *
import ctypes
import ui
class CLLocationCoordinate2D (Structure):
_fields_ = [('latitude', c_double), ('longitude', c_double)]
class MKCoordinateSpan (Structure):
_fields_ = [('d_lat', c_double), ('d_lon', c_double)]
class MKCoordinateRegion (Structure):
_fields_ = [('center', CLLocationCoordinate2D), ('span', MKCoordinateSpan)]
MKPointAnnotation = ObjCClass('MKPointAnnotation')
MKPinAnnotationView = ObjCClass('MKPinAnnotationView')
MKAnnotationView = ObjCClass('MKAnnotationView')
UIColor = ObjCClass('UIColor') # used to set pin color
def mapView_viewForAnnotation_(self,cmd,mk_mapview,mk_annotation):
try:
# not specially called in the same sequence as pins created
# should have one MK(Pin)AnnotationView by type (ex: pin color)
annotation = ObjCInstance(mk_annotation)
mapView = ObjCInstance(mk_mapview)
if annotation.isKindOfClass_(MKPointAnnotation):
tit = str(annotation.title())
subtit = str(annotation.subtitle())
pin_color = annotation.pin_color
id = tit
pinView = mapView.dequeueReusableAnnotationViewWithIdentifier_(id)
if not pinView:
pinView = MKPinAnnotationView.alloc().initWithAnnotation_reuseIdentifier_(annotation,id)
pinView.canShowCallout = True # tap-> show title
pinView.animatesDrop = False # not Animated pin falls like a drop
pinView.pinColor = pin_color # 0=red 1=green 2=purple
else:
pinView.annotation = annotation
return pinView.ptr
return None
except Exception as e:
print('Error on line {}'.format(sys.exc_info()[-1].tb_lineno), type(e).__name__, e)
# Build method of MKMapView Delegate
methods = [mapView_viewForAnnotation_]
protocols = ['MKMapViewDelegate']
try:
MyMapViewDelegate = ObjCClass('MyMapViewDelegate')
except Exception as e:
MyMapViewDelegate = create_objc_class('MyMapViewDelegate', methods=methods, protocols=protocols)
#MyMapViewDelegate = create_objc_class('MyMapViewDelegate', NSObject, methods=methods, protocols=protocols)
class MapView(ui.View):
@on_main_thread
def __init__(self, *args, **kwargs):
ui.View.__init__(self, *args, **kwargs)
MKMapView = ObjCClass('MKMapView')
frame = CGRect(CGPoint(0, 0), CGSize(self.width, self.height))
self.mk_map_view = MKMapView.alloc().initWithFrame_(frame)
flex_width, flex_height = (1<<1), (1<<4)
self.mk_map_view.setAutoresizingMask_(flex_width|flex_height)
self_objc = ObjCInstance(self)
self_objc.addSubview_(self.mk_map_view)
self.mk_map_view.release()
# Set Delegate of mk_map_view
map_delegate = MyMapViewDelegate.alloc().init()#.autorelease()
self.mk_map_view.setDelegate_(map_delegate)
@on_main_thread
def add_pin(self, lat, lon, color, title, subtitle):
global all_points
'''Add a pin annotation to the map'''
MKPointAnnotation = ObjCClass('MKPointAnnotation')
coord = CLLocationCoordinate2D(lat, lon)
all_points.append(coord) # store all pin's for MKPolyline
annotation = MKPointAnnotation.alloc().init().autorelease()
annotation.setTitle_(title)
annotation.setSubtitle_(str(subtitle))
annotation.setCoordinate_(coord, restype=None, argtypes=[CLLocationCoordinate2D])
annotation.pin_color = color
self.mk_map_view.addAnnotation_(annotation)
@on_main_thread
def set_region(self, lat, lon, d_lat, d_lon, animated=False):
'''Set latitude/longitude of the view's center and the zoom level (specified implicitly as a latitude/longitude delta)'''
region = MKCoordinateRegion(CLLocationCoordinate2D(lat, lon), MKCoordinateSpan(d_lat, d_lon))
self.mk_map_view.setRegion_animated_(region, animated, restype=None, argtypes=[MKCoordinateRegion, c_bool])
def main():
global all_points
#----- Main process -----
console.clear()
# Hide script
back = MapView()
back.background_color='white'
back.name = 'Test for @RichardSmith'
back.present('fullscreen', hide_title_bar=False)
map_points = []
# assume infos come from a CSV file
map_points.append((0.5830414, 32.5316170, 0, 'Yoweri Museveni', '12 years, supported since 01/02/2019'))
map_points.append((0.2986261, 32.6033583, 1, "The Uganda National N.G.O Forum", 'since 1997, Providing a Sharing and Reflection Platform for NGOs in Uganda'))
# min and max of latitude and longitude
min_lat = min(map_points,key = lambda x:x[0])[0]
max_lat = max(map_points,key = lambda x:x[0])[0]
min_lon = min(map_points,key = lambda x:x[1])[1]
max_lon = max(map_points,key = lambda x:x[1])[1]
# Display map, center and zoom so all points are visible
back.set_region((min_lat+max_lat)/2,(min_lon+max_lon)/2, 4*(max_lat-min_lat), 4*(max_lon-min_lon), animated=True)
# Display pin's
all_points = []
for point in map_points:
back.add_pin(point[0],point[1],point[2],point[3],point[4])
# Protect against import
if __name__ == '__main__':
main()
