def _build_texts(self, image):
"""Draw texts on a PIL image (PIL is used instead of OpenCV
because it is able to draw any fonts without ext).
:param image: PIL.Image instance
:type image: object
"""
offset_generator = self._iter_texts_rect()
draw = ImageDraw.Draw(image)
for text, font_name, color, align in self._texts:
text_x, text_y, max_width, max_height = next(offset_generator)
if not text: # Empty string: go to next text position
continue
# Use PIL to draw text because better support for fonts than OpenCV
font = fonts.get_pil_font(text, font_name, max_width, max_height)
_, text_height = font.getsize(text)
(text_width, _baseline), (offset_x,
offset_y) = font.font.getsize(text)
if align == self.CENTER:
text_x += (max_width - text_width) // 2
elif align == self.RIGHT:
text_x += (max_width - text_width)
draw.text((text_x - offset_x // 2, text_y +
(max_height - text_height) // 2 - offset_y // 2),
text,
color,
font=font)
def _build_texts(self, image):
"""Draw texts on a PIL image.
:param image: image to draw on
:type image: :py:class:`PIL.Image`
"""
offset_generator = self._iter_texts_rects()
for text, font_name, color, align in self._texts:
pos_x, pos_y, max_w, max_h, angle = next(offset_generator)
if not text: # Empty string: go to next text position
continue
rect = Image.new('RGBA', (max_w, max_h), (255, 0, 0, 0))
draw = ImageDraw.Draw(rect)
font = fonts.get_pil_font(text, font_name, max_w, max_h)
_, text_height = font.getsize(text)
(text_width, _baseline), (offset_x,
offset_y) = font.font.getsize(text)
x = 0
if align == self.CENTER:
x += (max_w - text_width) // 2
elif align == self.RIGHT:
x += (max_w - text_width)
draw.text((x - offset_x // 2,
(max_h - text_height) // 2 - offset_y // 2),
text,
color,
font=font)
self._image_paste(rect, image, pos_x, pos_y, angle)
def build_overlay(self, size, text, alpha):
"""Return a PIL image with the given text that can be used
as an overlay for the camera.
"""
image = Image.new('RGBA', size)
draw = ImageDraw.Draw(image)
font = fonts.get_pil_font(text, fonts.CURRENT, 0.9 * size[0], 0.9 * size[1])
txt_width, txt_height = draw.textsize(text, font=font)
position = ((size[0] - txt_width) // 2, (size[1] - txt_height) // 2 - size[1] // 10)
draw.text(position, text, (255, 255, 255, alpha), font=font)
return image
def create_qr_code_print(qr_code_image, result_image, texts, pic_crypt_name):
width = 580
background = Image.new('RGB', (width, 650), color=(255, 255, 255))
img_qr = Image.open(qr_code_image)
qr_size = (int(400), int(400))
resized_img_qr = img_qr.resize(qr_size, Image.ANTIALIAS)
background.paste(resized_img_qr, (90 + 30,0))
#('Amatic-Bold', 'AmaticSC-Regular'),
draw = ImageDraw.Draw(background)
text_y = 370
font_string = 'Roboto-Light'
help = ["http://example.org", "Code: {}".format(pic_crypt_name)]
max_width = 500
max_height = 50
color = (0, 0, 0)
font_name = fonts.get_filename(font_string)
# Use PIL to draw text because better support for fonts than OpenCV
font = fonts.get_pil_font(help[0], font_name, max_width, max_height)
for text in help:
text_x = 70
_, text_height = font.getsize(text)
(text_width, _baseline), (offset_x, offset_y) = font.font.getsize(text)
text_x += (max_width - text_width) // 2
draw.text((text_x - offset_x // 2,
text_y + (max_height - text_height) // 2 - offset_y // 2),
text, color, font=font)
text_y += text_height
# text_y = 400
font_string = 'Amatic-Bold'
max_height = (650 - text_y )/2
for text in texts:
if not text: # Empty string: go to next text position
continue
max_width = 520
text_x = 60
color = (0, 0, 0)
font_name = fonts.get_filename(font_string)
# Use PIL to draw text because better support for fonts than OpenCV
font = fonts.get_pil_font(text, font_name, max_width, max_height)
_, text_height = font.getsize(text)
(text_width, _baseline), (offset_x, offset_y) = font.font.getsize(text)
text_x += (max_width - text_width) // 2
draw.text((text_x - offset_x // 2,
text_y + (max_height - text_height) // 2 - offset_y // 2),
text, color, font=font)
text_y += text_height
background.save(result_image)
return background