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#!/usr/bin/python2.7
import os
import sys
import random
import re
import urllib
from config import *
import lib.utils as utils
import simplejson as json
from PIL import Image
import uuid
FUSE_MODE="Pin_Light"
class Pattern:
def __init__(self, **kwargs):
self.params = {}
self.tag = "imPattern";
self._pid = str(os.getpid())
self.commands = [];
self.height = ""
self.width = ""
self._required_keys = [
#FIXME change name to username in js
#FIXME change js api
"pattern_url",
"pattern_data",
"username",
"image_url",
]
self.files_created = []
for k in self._required_keys:
if k in kwargs:
if k in [ 'pattern_url', 'image_url' ]:
self.params[k] = kwargs[k]
elif k == 'pattern_data':
self.params[k] = kwargs[k] #FIXME add conversion data
else:
self.params[k] = utils.sanitize(kwargs[k])
else:
self.params[k] = False;
if not self.params['image_url']:
sys.stderr.write('no image url');
raise ValueError
self.params = utils.dotdict(self.params)
self.basename, self._format = self._get_filename();
#FIXME omit file extension for downloaded files
self._downloaded_file = os.path.join(WORKING_DIR, "IMPATTERNTMP_DL{}_{}.{}".format(self.basename, self._pid, self._format)) # same here
#lets go back to this in a second
self._pattern_file = os.path.join(WORKING_DIR, "IMPATTERNTMP_PTN{}_{}.{}".format(self.basename, self._pid, self._format)) # this
self._download(self.params.image_url, self._downloaded_file)
self.width, self.height = utils.dimensions(self._downloaded_file) # same here
self.filename = "{}.{}".format(self.basename, self._format)
self.filepath = os.path.join(WORKING_DIR, self.filename)
if self.params['pattern_url']:
self._download(self.params['pattern_url'], self._pattern_file)
elif self.params['pattern_data']:
self._from_pattern_data()
else:
sys.stderr.write("pattern must be supplied as json array or as a png url")
raise ValueError;
def _download(self, url, dest):
try:
utils.download(url, dest)
self.files_created.append(dest)
except Exception as e:
sys.stderr.write(str(e))
raise;
def _call_cmd(self, cmd):
try:
utils.call_cmd(cmd)
self.commands.append(" ".join(cmd));
except Exception:
raise Exception("Unable to call cmd {}".format(str(cmd)))
def _from_pattern_data(self):
def boolToColor(boolean):
if boolean:
return (0,0,0,255);
else:
return (255,255,255,255)
specs = json.loads(self.params.pattern_data);
if int(specs['width']) > 100 or int(specs['height']) > 100:
raise ValueError
sys.stderr.write("height and width need to be less than 100 px")
img = Image.new('RGBA', (int(specs['width']), int(specs['height'])));
pixels = img.load();
for i in range(0, len(specs['matrix'])):
for j in range(0, len(specs['matrix'][i])):
pixels[j,i] = boolToColor(int(specs['matrix'][i][j]));
img.save(self._pattern_file, "PNG")
def _get_filename (self):
url = self.params.image_url
name_part = "";
file_format = "";
if "?" in url:
url = url.split("?")[0]
if "/" in url:
url = urllib.unquote(url).replace(" ","")
name_part = url.split("/")[-1]
try:
parts = name_part.split(".")
name_part = utils.sanitize(parts[-2])
file_format = utils.sanitize(parts[-1])
if not name_part or not file_format:
sys.stderr.write( "Incompatible input file type")
raise;
except Exception as e:
sys.stderr.write( "Incompatible input file type")
raise;
else:
sys.stderr.write( "Incompatible url")
raise;
if (len(name_part) > 20):
name_part = name_part[:-20]
return "{}{}_{}_{}".format(self.tag, name_part, utils.now(), self.params.username or ""), file_format
def _cleanup(self):
cmd = ["rm"]+self.files_created
self._call_cmd(cmd)
#first step
def _make_canvas(self):
cmd = [BIN_CONVERT,"-size",self.width+"x"+self.height,"canvas:transparent", self.filepath]
self._call_cmd(cmd)
#second step use the Canvas as a background
def _make_mask(self):
#tile the pattern pattern on the canvas
cmd = [BIN_COMPOSITE,"-tile", self._pattern_file, self.filepath, self.filepath];
self._call_cmd(cmd)
#fuse the tiled file to create a mask
#convert thebg.gif -compose Dst_In null: thefile.gif -matte -layers composite new.gif
cmd = [BIN_CONVERT, self.filepath, "-compose", "Dst_In", "null:",
self._downloaded_file, "-matte", "-layers", "composite", self.filepath]
self._call_cmd(cmd)
#third step
def _fuse_mask(self, fuse_mode=FUSE_MODE):
cmd = [BIN_CONVERT, "-dispose", "2", self.filepath, "null:",
self._downloaded_file, "-matte", "-compose", fuse_mode, "-layers", "composite",
self.filepath]
self._call_cmd(cmd)
def create(self):
self._make_canvas();
self._make_mask()
self._fuse_mask();
if __name__ == "__main__":
TEST_PARAMS = {
# "pattern_url" : "http://asdf.us/impattern/patterns/1.png",
"pattern_data" : '{"matrix":[["0","0","0","0","0","1","0","0","0","0"],["0","0","0","0","1","1","1","0","0","0"],["0","0","1","1","1","0","1","0","0","0"],["0","1","1","0","0","0","0","0","0","0"],["0","1","0","0","1","0","0","0","0","0"],["0","1","0","0","1","0","0","0","1","0"],["0","1","0","0","1","1","0","0","1","0"],["0","1","0","0","0","1","1","1","1","0"],["0","1","1","1","1","0","0","0","0","0"],["0","0","0","0","1","0","0","0","0","0"]],"width":"10","height":"10"}',
# "username" : "garfield",
"image_url" : "http://i.asdf.us/im/be/PinkHijab_1425078647_reye.gif",
}
p = Pattern(**TEST_PARAMS)
p.create()
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