generated from hjess/PythonTemplateProject
Henrik Jess Nielsen
bde441326b
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73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
import os
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from PIL import Image
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class ImageHandler:
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def __init__(self, base_dir: str):
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"""
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Initialize the ImageHandler.
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:param base_dir: Base directory for storing and retrieving images.
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"""
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self.base_dir = base_dir
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def get_image_path(self, filename: str) -> str:
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"""
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Construct the full path for a given image file.
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:param filename: Relative filename of the image.
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:return: Full path to the image.
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"""
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return os.path.join(self.base_dir, filename)
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def get_resized_image_path(self, filename: str, width: int, height: int) -> str:
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"""
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Construct the path for a resized image.
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:param filename: Original image filename.
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:param width: Desired width.
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:param height: Desired height.
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:return: Path to the resized image.
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"""
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return os.path.join(self.base_dir, f"resized_{width}x{height}_{filename}")
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def resize_and_save(self, original_path: str, resized_path: str, width: int, height: int):
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"""
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Resize and save the image if it doesn't already exist.
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:param original_path: Path to the original image file.
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:param resized_path: Path to save the resized image.
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:param width: Desired width.
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:param height: Desired height.
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"""
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if not os.path.exists(resized_path):
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with Image.open(original_path) as img:
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img_resized = img.resize((width, height))
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img_resized.save(resized_path, format="JPEG")
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def generate_image_tag(self, src: str, width: int, height: int, css_class: str = "", alt: str = "") -> str:
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"""
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Generate an HTML <img> tag and ensure the image exists with the specified dimensions.
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:param src: Relative path to the original image.
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:param width: Desired width of the image.
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:param height: Desired height of the image.
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:param css_class: Optional CSS class to add to the <img> tag.
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:param alt: Alternative text for the image.
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:return: HTML <img> tag.
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"""
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original_path = self.get_image_path(src)
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if not os.path.isfile(original_path):
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raise FileNotFoundError(f"Image not found: {src}")
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# Construct resized image path
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resized_filename = f"resized_{width}x{height}_{os.path.basename(src)}"
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resized_path = self.get_resized_image_path(src, width, height)
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# Resize and save the image if necessary
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self.resize_and_save(original_path, resized_path, width, height)
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# Return the <img> tag
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class_attr = f' class="{css_class}"' if css_class else ""
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alt_attr = f' alt="{alt}"' if alt else ""
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return f'<img src="/{resized_path}" width="{width}" height="{height}"{alt_attr}{class_attr}>'
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