2025-summer/team-3
12
Fork 0
Code Issues Pull requests Projects Releases Activity

take shortcut in get_png if this is an empty tile rendering

Browse source
This commit is contained in:
Laura Klünder 2017-10-20 22:37:54 +02:00
parent 6592c344b2
commit cd09cbab68
2 changed files with 10 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
src/c3nav/mapdata/tasks.py
View file

@ -1,4 +1,5 @@
import os import os
from django.conf import settings from django.conf import settings
from c3nav.celery import app from c3nav.celery import app

9
src/c3nav/mapdata/utils/svg.py
View file

@ -85,8 +85,17 @@ class SVGImage:
result += '</svg>' result += '</svg>'
return result return result
empty_tile = (b'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x01\x00\x00\x00\x01\x00\x01\x03\x00\x00\x00f\xbc:%\x00'
b'\x00\x00\x03PLTE\x00\x00\x00\xa7z=\xda\x00\x00\x00\x01tRNS\x00@\xe6\xd8f\x00\x00\x00\x1fIDATh\xde'
b'\xed\xc1\x01\r\x00\x00\x00\xc2\xa0\xf7Om\x0e7\xa0\x00\x00\x00\x00\x00\x00\x00\x00\xbe\r!\x00\x00'
b'\x01\x7f\x19\x9c\xa7\x00\x00\x00\x00IEND\xaeB`\x82')
def get_png(self, f=None): def get_png(self, f=None):
# render the image to png. returns bytes if f is None, otherwise it calls f.write() # render the image to png. returns bytes if f is None, otherwise it calls f.write()
if self.get_dimensions_px(buffer=False) == (256, 256) and not self.g:
return self.empty_tile
if settings.SVG_RENDERER == 'rsvg': if settings.SVG_RENDERER == 'rsvg':
# create buffered surfaces # create buffered surfaces
buffered_surface = cairocffi.SVGSurface(None, *(int(i) for i in self.get_dimensions_px(buffer=True))) buffered_surface = cairocffi.SVGSurface(None, *(int(i) for i in self.get_dimensions_px(buffer=True)))