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from pathlib import Path |
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import streamlit as st |
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import numpy as np |
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@st.experimental_singleton |
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def get_image_list(): |
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image_dir = Path(__file__).parent.resolve() / "images" |
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return list(image_dir.glob("*.png")) |
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def overflow_text(text: str, max_width: int): |
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return text if len(text) <= max_width - 3 else f"{text[:max_width - 3]}..." |
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def read_png(path: Path): |
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from png import Reader |
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with path.open("rb") as f: |
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reader = Reader(file=f) |
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width, height, pixels, metadata = reader.read_flat() |
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data = np.array(pixels).reshape(height, width, metadata["planes"]) |
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parameters = (metadata["text"] or {}).get("parameters") |
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return width, height, data, parameters |
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image_list = get_image_list() |
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with st.sidebar: |
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image_path = st.radio( |
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"Select an image", image_list, format_func=lambda p: overflow_text(p.name, 30) |
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) |
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if image_path: |
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width, height, image, parameters = read_png(image_path) |
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st.image( |
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image, use_column_width="auto", caption=f"{image_path.name} ({width}x{height})" |
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) |
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if parameters: |
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st.write("Parameters:") |
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st.code(parameters, language="text") |
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