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from config import BIN_CONVERT, BIN_COMPOSITE
from pb import Pb
from PIL import Image
_FUSE_MODE="Pin_Light"
class PbPattern(Pb):
example_params = {
"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"}',
"image_url" : "http://i.asdf.us/im/be/PinkHijab_1425078647_reye.gif",
# "username" : "garfield",
# "pattern_url" : "http://asdf.us/impattern/patterns/1.png",
}
def __init__(self, **kwargs):
super(PbPattern, self).__init__(**kwargs)
_definitions = {
'image_url': {'type':'img_url'},
'pattern_url': {'type':'img_url'},
'pattern_data': {'type':'json'},
'username': {'type':'string'},
}
self.params.definitions_import(_definitions, kwargs, classname=self.__class__.__name__)
self.filename, self.filepath = self._filename_filepath_create(
url=self.params.image_url['url'], extension=self.params.image_url['mimetype']
)
if self.params.pattern_data:
_pattern_filename, self._pattern_filepath = self._filename_filepath_create(namepart="pattern")
self._from_pattern_data()
elif not self.params.pattern_url:
self.err_warn("pattern must be supplied as json array or as a png url")
else:
self._pattern_filepath = self.params.pattern_url['path']
self._db_url_param = str(self.params.image_url.url)
def _from_pattern_data(self):
def boolToColor(boolean):
if boolean:
return (0, 0, 0, 255)
else:
return (255, 255, 255, 255)
specs = self.params.pattern_data.value
if int(specs['width']) > 100 or int(specs['height']) > 100:
self.err_warn("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_filepath, "PNG")
#first step
def _make_canvas(self):
_width, _height = self._dimensions(self.params.image_url['path']) # same here
cmd = [BIN_CONVERT, "-size", _width + "x" + _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_filepath, 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.params.image_url['path'], "-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.params.image_url['path'], "-matte", "-compose", fuse_mode, "-layers", "composite",
self.filepath
]
self._call_cmd(cmd)
def create(self):
self._make_canvas()
self._make_mask()
self._fuse_mask()
super(PbPattern, self).create()
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