klemek
113 lines
3.8 KiB
Python
113 lines
3.8 KiB
Python
from typing import Optional, Tuple, List
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import re
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from PIL import Image
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from io import BytesIO
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from .types import Text, Pos
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from . import img_factory
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from . import meme_db
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from . import utils
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right_wmark = Text("Made with meme-otron")
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right_wmark.position = Pos.SE
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right_wmark.fill = (128, 128, 128, 128)
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right_wmark.font_size = 0.02
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right_wmark.x_range = [0.005, 0.995]
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right_wmark.y_range = [0.005, 0.995]
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left_wmark = Text()
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left_wmark.position = Pos.SW
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left_wmark.fill = (128, 128, 128, 128)
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left_wmark.font_size = 0.02
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left_wmark.x_range = [0.005, 0.995]
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left_wmark.y_range = [0.005, 0.995]
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simple_text = Text()
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simple_text.align = "left"
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simple_text.position = Pos.W
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simple_text.font_size = 0.04
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simple_text.x_range = [0.01, 0.99]
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simple_text.y_range = [0.2, 0.8]
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def compute(*args: str, input_data: Optional[bytes] = None,
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wmark: bool = True, left_wmark_text: Optional[str] = None,
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max_file_size: Optional[int] = None,
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debug: bool = False) -> Tuple[Optional[Image.Image], List[str]]:
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if len(args) < 1:
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return None, ['Not enough arguments']
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parts = utils.split_arguments(args, "-")
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images = []
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errors = []
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for part in parts:
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img, err = compute_part(*part, input_data=input_data, max_file_size=max_file_size, debug=debug)
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if img is not None:
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images += [img]
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else:
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errors += [err]
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if len(images) == 0:
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return None, errors
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output_image = img_factory.compose_image(images)
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if wmark:
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watermarks = [right_wmark]
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if left_wmark_text is not None:
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watermarks += [left_wmark.variant(left_wmark_text)]
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output_image = img_factory.apply_texts(output_image, watermarks, debug=debug)
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if max_file_size is not None:
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with BytesIO() as img_file:
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output_image.save(img_file, 'JPEG')
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if img_file.tell() > max_file_size:
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return None, ['Output image too big']
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return output_image, errors
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def compute_part(*args: str, input_data: Optional[bytes] = None,
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max_file_size: Optional[int] = None,
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debug: bool = False) -> Tuple[Optional[Image.Image], Optional[str]]:
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meme_id = utils.sanitize_input(args[0])
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if meme_id == "text":
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if len(args) <= 1:
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return None, 'Text: not enough arguments'
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texts = [simple_text.variant(arg) for arg in args[1:]]
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return img_factory.build_text_only(texts, debug=debug), None
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elif meme_id == "image":
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if input_data is None or len(input_data) == 0:
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if len(args) <= 1:
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return None, 'Image: received no input data nor URL'
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else:
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input_data, err = utils.read_web_file(args[1], max_file_size=max_file_size)
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if input_data is None:
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return None, 'Image: ' + err
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img = img_factory.build_image_only(input_data)
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if img is None:
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return None, 'Image: invalid image format'
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else:
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return img, None
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else:
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meme = meme_db.get_meme(meme_id)
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if meme is None:
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error = f"Template: '{meme_id}' not found."
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proposal = meme_db.find_nearest(meme_id)
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if proposal is not None:
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error += f" Did you mean '{proposal}'?"
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return None, error
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if len(args) > 1:
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c = 0
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for i in range(len(meme.texts)):
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if meme.texts[i].text_ref is None:
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if c < len(args) - 1:
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meme.texts[i].text = args[c + 1].replace("\\n", "\n")
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else:
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meme.texts[i].text = ""
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c += 1
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else:
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meme.texts[i].text = meme.texts[meme.texts[i].text_ref].text
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return img_factory.build_from_template(meme.template, meme.texts, debug=debug), None
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