Gregor Klevze
58ee1b3bdd
- New card-renderer FastAPI service (Python 3.11 + Pillow) - GET /health, GET /templates - POST /render (URL input) - POST /render/file (multipart upload) - POST /render/meta (dry-run layout metadata) - nova-artwork-v1 template: cover crop, gradient overlay, text, logo - SSRF-safe async image fetch with redirect validation - Smart center cover crop isolated for future YOLO focal-point support - Graceful font/logo fallback when assets are absent - docker-compose.yml: add card-renderer service + healthcheck; extend gateway with CARD_RENDERER_URL and depends_on - gateway/main.py: proxy endpoints under /cards/* - GET /cards/templates - POST /cards/render - POST /cards/render/file - POST /cards/render/meta All protected by existing APIKeyMiddleware
39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
from __future__ import annotations
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from PIL import Image
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def smart_cover_crop(
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img: Image.Image,
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target_w: int,
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target_h: int,
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) -> tuple[Image.Image, tuple[int, int, int, int]]:
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"""Center-weighted cover crop that fills target_w × target_h exactly.
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The crop box is returned alongside the cropped image so callers can
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record it for metadata or later focal-point refinement.
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"""
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src_w, src_h = img.size
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target_ratio = target_w / target_h
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src_ratio = src_w / src_h
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if src_ratio > target_ratio:
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# Image is wider than needed — crop sides
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crop_h = src_h
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crop_w = int(crop_h * target_ratio)
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left = max((src_w - crop_w) // 2, 0)
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top = 0
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else:
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# Image is taller than needed — crop top/bottom
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crop_w = src_w
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crop_h = int(crop_w / target_ratio)
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left = 0
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top = max((src_h - crop_h) // 2, 0)
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right = min(left + crop_w, src_w)
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bottom = min(top + crop_h, src_h)
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box = (left, top, right, bottom)
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cropped = img.crop(box).resize((target_w, target_h), Image.LANCZOS)
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return cropped, box
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