def generate_pdf(self):
from localground.apps.site import models
from localground.apps.lib.helpers import generic, StaticMap, Report
import os
# use static map helper function to calculate additional geometric
# calculations
m = StaticMap()
map_width = self.layout.map_width_pixels
map_height = self.layout.map_height_pixels
path = settings.USER_MEDIA_ROOT + '/prints/' + self.uuid
os.mkdir(path) # create new directory
file_name = 'Print_' + self.uuid + '.pdf'
layers = self.embedded_layers
scans = self.embedded_scans
info = m.get_basemap_and_extents(
self.map_provider, self.zoom, self.center, map_width, map_height)
map_image = info.get('map_image')
northeast = info.get('northeast')
southwest = info.get('southwest')
bbox = (northeast.coords, southwest.coords)
bbox = [element for tupl in bbox for element in tupl]
extents = Polygon.from_bbox(bbox)
qr_size = self.layout.qr_size_pixels
border_width = self.layout.border_width
overlay_image = m.get_map(
layers,
southwest=southwest,
northeast=northeast,
scans=scans,
height=map_height,
width=map_width,
show_north_arrow=True)
map_image.paste(overlay_image, (0, 0), overlay_image)
if self.layout.is_data_entry:
map_image = map_image.convert("L") # convert to black and white
map_image.save(path + '/map.jpg')
# add border around map:
map_image = StaticMap.draw_border(map_image, border_width)
map_width, map_height = map_image.size
map_image.save(path + '/map_with_border.jpg')
# generate thumbnail:
size = map_width / 3, map_height / 3
thumbnail = map_image.copy()
thumbnail.thumbnail(size, Image.ANTIALIAS)
thumbnail.save(path + '/thumbnail.jpg')
# generate QR code
qr_image_1 = StaticMap.generate_qrcode(
self.uuid,
1,
path,
qr_size,
border_width)
qr_size = qr_image_1.size[0]
# generate PDF
pdf_report = Report(
path,
file_name=self.pdf_path,
is_landscape=self.layout.is_landscape,
author=self.owner.username,
title=self.name)
##########
# Page 1 #
##########
# build from the bottom up:
# (x & y dependencies are additive from bottom up)
# add footer:
if self.layout.is_data_entry:
pdf_report.add_footer(qr_image_1, self.uuid, self.description)
# add map:
pdf_report.add_map(map_image, is_data_entry=self.layout.is_data_entry)
# add header:
pdf_report.add_header(
is_data_entry=self.layout.is_data_entry,
is_map_page=True)
pdf_report.save()
def insert_print_record(cls, user, project, layout, map_provider, zoom,
center, host, map_title=None, instructions=None,
layer_ids=None, scan_ids=None,
do_save=True):
from localground.apps.site import models
from localground.apps.lib.helpers import generic, StaticMap
layers, scans = None, None
if layer_ids is not None:
layers = models.WMSOverlay.objects.filter(id__in=layer_ids)
if scan_ids is not None:
scans = models.Scan.objects.filter(id__in=scan_ids)
if instructions is not None: # preserve line breaks in the pdf report
instructions = '<br/>'.join(instructions.splitlines())
# use static map helper function to calculate additional geometric
# calculations
m = StaticMap()
info = m.get_basemap_and_extents(
map_provider, zoom, center,
layout.map_width_pixels, layout.map_height_pixels
)
map_image = info.get('map_image')
northeast = info.get('northeast')
southwest = info.get('southwest')
bbox = (northeast.coords, southwest.coords)
bbox = [element for tupl in bbox for element in tupl]
extents = Polygon.from_bbox(bbox)
# Save the print
p = Print()
p.uuid = generic.generateID()
p.project = project
p.zoom = zoom
p.map_width = layout.map_width_pixels
p.map_height = layout.map_height_pixels
p.map_provider = map_provider
p.owner = user
p.last_updated_by = user
p.layout = layout
p.host = host
p.map_image_path = 'map.jpg'
p.pdf_path = 'Print_' + p.uuid + '.pdf'
p.preview_image_path = 'thumbnail.jpg'
p.name = map_title
p.description = instructions
p.center = center
p.northeast = northeast
p.southwest = southwest
p.extents = extents
p.virtual_path = p.generate_relative_path()
#raise Exception(p.to_dict())
if do_save:
p.save()
# todo: come back to this (if we want MapServer to render layers)
if layers:
for layer in layers:
p.stash(l, user)
if scans:
for scan in scans:
p.stash(scan, user)
return p