def build_image(self, surface, node):
img_bytes = StringIO.StringIO()
img_id = tiletree.build_node_id(node.zoom_level, node.tile_x,
node.tile_y)
surface.write_to_png(img_bytes)
img_bytes = tiletree.palette_png_bytes(
StringIO.StringIO(img_bytes.getvalue()))
return (img_id, img_bytes)
def fetch_helper(self, tile_generator, do_palette=True): output_surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 256, 256) output_context = cairo.Context(output_surface) for tile in tile_generator: if(tile == None): continue tile_img = cairo.ImageSurface.create_from_png(tile) output_context.set_source_surface(tile_img, 0, 0) output_context.paint() output_bytes = StringIO.StringIO() output_surface.write_to_png(output_bytes) if(do_palette): return tiletree.palette_png_bytes(StringIO.StringIO(output_bytes.getvalue())) return StringIO.StringIO(output_bytes.getvalue())
def fetch_helper(self, tile_generator, do_palette=True):
output_surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 256, 256)
output_context = cairo.Context(output_surface)
for tile in tile_generator:
if (tile == None):
continue
tile_img = cairo.ImageSurface.create_from_png(tile)
output_context.set_source_surface(tile_img, 0, 0)
output_context.paint()
output_bytes = StringIO.StringIO()
output_surface.write_to_png(output_bytes)
if (do_palette):
return tiletree.palette_png_bytes(
StringIO.StringIO(output_bytes.getvalue()))
return StringIO.StringIO(output_bytes.getvalue())
def build_image(self, surface, node): img_bytes = StringIO.StringIO() img_id = tiletree.build_node_id(node.zoom_level, node.tile_x, node.tile_y) surface.write_to_png(img_bytes) img_bytes = tiletree.palette_png_bytes(StringIO.StringIO(img_bytes.getvalue())) return (img_id, img_bytes)
