def create_thumbnail(self, width=None, height=None):
elements = self.get_patterns_as_json()
elements.sort(cmp=lambda x, y: cmp(x['z_index'], y['z_index']))
if not width or not height:
max_width = 0
max_height = 0
for el in elements:
bounds = MyMath.get_bounds(el['left'], el['top'], el['width'], el['height'], el['rotation'])
if max_width < bounds[0]:
max_width = bounds[0]
if max_height < bounds[1]:
max_height = bounds[1]
width, height = int(max_width * 1.1), int(max_height * 1.1)
dest_img = Image.new("RGBA", (width, height), "rgb(255,255,255)")
dest_img.putalpha(1)
try:
font = ImageFont.truetype(settings.DRAW_TEXT_FONT, 18)
except Exception:
logger.error("Couldn't use font from settings.DRAW_TEXT_FONT: %s" % getattr(settings, 'DRAW_TEXT_FONT', None))
font = None
for el in elements:
curr_img = Image.new("RGBA", (el['width'], el['height']), "rgb(200,200,200)")
draw = ImageDraw.Draw(curr_img)
draw.rectangle((1, 1, el['width'] - 1, el['height'] - 1), fill="rgb(255,240,200)", outline="rgb(128,128,128)")
if font and el['label']:
w, h = draw.textsize(el['label'], font=font)
draw.text((max(0, el['width'] - w) / 2, max(0, el['height'] - h) / 2), el['label'], fill="black")
bounds = MyMath.get_bounds(0, 0, el['width'], el['height'], el['rotation'])
final_left = el['left'] - (bounds[0] - el['width']) / 2
final_top = el['top'] - (bounds[1] - el['height']) / 2
if el['rotation']:
curr_img = curr_img.rotate(-el['rotation'], Image.BICUBIC, expand=True)
dest_img.paste(curr_img, (final_left, final_top), curr_img)
pixels = dest_img.load()
width, height = dest_img.size
for x in xrange(width):
for y in xrange(height):
r, g, b, a = pixels[x, y]
if a == 0:
pixels[x, y] = (255, 255, 255, 255)
dest_img = dest_img.convert('RGB')
new_size = _calc_size_min(dest_img.size, 200)
dest_img = dest_img.resize(new_size, Image.ANTIALIAS)
dest_buff = StringIO()
dest_img.save(dest_buff, 'JPEG')
dest_buff.seek(0)
if getattr(settings, 'LOCAL_PATH_FILE_SAVE', False):
dest_img.save('%s/final_%s.png' % (settings.LOCAL_PATH_FILE_SAVE, self.id), 'PNG')
else:
self.thumbnail.save("%s_%s.jpg" % (slugify(self.name), self.id), File(dest_buff))
def create_thumbnail(self, width=None, height=None):
elements = self.get_elements_as_json()
elements.sort(cmp=lambda x, y: cmp(x['z_index'], y['z_index']))
if not width or not height:
max_width = 0
max_height = 0
for el in elements:
bounds = MyMath.get_bounds(el['left'], el['top'], el['width'], el['height'], el['rotation'])
if max_width < bounds[0]:
max_width = bounds[0]
if max_height < bounds[1]:
max_height = bounds[1]
width, height = max_width, max_height
dest_img = Image.new("RGBA", (width, height), "rgb(255,255,255)")
dest_img.putalpha(1)
for el in elements:
bounds = MyMath.get_bounds(0, 0, el['width'], el['height'], el['rotation'])
final_left = el['left'] - (bounds[0] - el['width']) / 2
final_top = el['top'] - (bounds[1] - el['height']) / 2
url = el.get('image', {}).get('src')
if not url:
continue
if url.startswith('//'):
url = 'http:' + url
try:
if re.search('^https?://', url, re.I):
content = urllib2.urlopen(url).read()
else:
content = global_storage.open(url).read()
except Exception:
raise
curr_img = Image.open(cStringIO.StringIO(content))
new_size = _calc_max_width_height(curr_img.size, el['width'], el['height'])
if int(el['image']['scale'] * 20.0) != 20:
new_size = (int(new_size[0] * el['image']['scale']), int(new_size[1] * el['image']['scale']))
if new_size != curr_img.size:
curr_img = curr_img.resize(new_size, Image.ANTIALIAS)
if int(el['image']['scale'] * 20.0) != 20 or el['image']['offset_x'] or el['image']['offset_y']:
crop_params = [(new_size[0] - el['width']) / 2 - el['image']['offset_x'],
(new_size[1] - el['height']) / 2 - el['image']['offset_y']]
img_bckg = Image.new("RGBA", (abs(crop_params[0]) + el['width'], abs(crop_params[1]) + el['height']), "rgb(255,255,255)")
img_bckg.putalpha(1)
paste_x, paste_y = 0, 0
if crop_params[0] < 0:
paste_x = -crop_params[0]
crop_params[0] = 0
if crop_params[1] < 0:
paste_y = -crop_params[1]
crop_params[1] = 0
img_bckg.paste(curr_img, (paste_x, paste_y))
curr_img = img_bckg.crop((crop_params[0], crop_params[1], crop_params[0] + el['width'], crop_params[1] + el['height']))
if el['rotation']:
curr_img = curr_img.rotate(-el['rotation'], Image.BICUBIC, expand=True)
dest_img.paste(curr_img, (final_left, final_top), curr_img)
pixels = dest_img.load()
width, height = dest_img.size
for x in xrange(width):
for y in xrange(height):
r, g, b, a = pixels[x, y]
if a == 0:
pixels[x, y] = (255, 255, 255, 255)
dest_img = dest_img.convert('RGB')
new_size = _calc_size_min(dest_img.size, 200)
dest_img = dest_img.resize(new_size, Image.ANTIALIAS)
dest_buff = StringIO()
dest_img.save(dest_buff, 'JPEG')
dest_buff.seek(0)
self.thumbnail.save("%s_%s.jpg" % (slugify(self.name), self.id), File(dest_buff))
