add example folder
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31
examples/sobel_filter/index.html
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31
examples/sobel_filter/index.html
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<!DOCTYPE html>
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<html lang="en" style="width: 100%;height: 100%">
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<head id="head">
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<!-- Bootstrap CSS -->
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<link href="./resources/bootstrap.css" rel="stylesheet">
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<link rel="stylesheet" href="./resources/pyscript.css" />
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<script defer src="./resources/pyscript.js"></script>
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<title>sobel_filter</title>
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<py-env>
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- numpy
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- scikit-image
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- ./resources/pyscript_bootstrap_templates-0.1.0-py3-none-any.whl
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</py-env>
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</head>
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<body style="width: 100%; height: 100%">
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<div id="pyscript_app" style="height: 100%; min-height: 100%"></div>
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<py-script src="./main.py"></py-script>
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<script src="./resources/bootstrap.js"></script>
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</body>
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</html>
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41
examples/sobel_filter/main.py
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examples/sobel_filter/main.py
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from pyscript_bootstrap_templates import bootstrap_templates
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from pyscript_bootstrap_templates import bootstrap_HTML as bHTML
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from pyscript_bootstrap_templates import bootstrap_inputs as bInputs
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from pyscript_bootstrap_templates import HTML as HTML
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import numpy as np
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from PIL import Image
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from io import BytesIO
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from skimage import filters
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# create a sobel image with skimage
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def sobel_image(img):
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if len(img.shape) == 3:
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img = img[:,:,0] + img[:,:,1] + img[:,:,2]
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img = img / 3
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img_sobel = filters.sobel(img)
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return ((255 * img_sobel) / img_sobel.max()).astype(np.uint8)
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app = bootstrap_templates.PyScriptBootstrapDashboard(parent_element="pyscript_app", brand_name="Image Filter Example")
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image_input = bInputs.InputFile(label_text="choose image file", parent=app.sidebar)
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image_input.set_attribute("accept", "image/*")
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def on_image_change(f, *args):
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print("image changed")
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print(f)
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f.seek(0)
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img = Image.open(f)
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img = sobel_image(np.array(img))
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output = bHTML.Image.from_numpy_array(img, parent=app.main_area)
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output.rounded = True
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output.rounded_size = 10
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output.shadow = bHTML.Shadow.LARGE
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image_input.onchange = on_image_change
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7
examples/sobel_filter/resources/bootstrap.css
vendored
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7
examples/sobel_filter/resources/bootstrap.css
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7
examples/sobel_filter/resources/bootstrap.js
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7
examples/sobel_filter/resources/bootstrap.js
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14
examples/sobel_filter/resources/pyscript.css
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14
examples/sobel_filter/resources/pyscript.css
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4
examples/sobel_filter/resources/pyscript.js
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4
examples/sobel_filter/resources/pyscript.js
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424
examples/sobel_filter/resources/pyscript.py
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424
examples/sobel_filter/resources/pyscript.py
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import asyncio
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import base64
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import io
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import sys
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import time
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from textwrap import dedent
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import micropip # noqa: F401
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from js import console, document
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loop = asyncio.get_event_loop()
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MIME_METHODS = {
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"__repr__": "text/plain",
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"_repr_html_": "text/html",
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"_repr_markdown_": "text/markdown",
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"_repr_svg_": "image/svg+xml",
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"_repr_png_": "image/png",
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"_repr_pdf_": "application/pdf",
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"_repr_jpeg_": "image/jpeg",
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"_repr_latex": "text/latex",
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"_repr_json_": "application/json",
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"_repr_javascript_": "application/javascript",
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"savefig": "image/png",
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}
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def render_image(mime, value, meta):
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data = f"data:{mime};charset=utf-8;base64,{value}"
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attrs = " ".join(['{k}="{v}"' for k, v in meta.items()])
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return f'<img src="{data}" {attrs}</img>'
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def identity(value, meta):
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return value
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MIME_RENDERERS = {
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"text/plain": identity,
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"text/html": identity,
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"image/png": lambda value, meta: render_image("image/png", value, meta),
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"image/jpeg": lambda value, meta: render_image("image/jpeg", value, meta),
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"image/svg+xml": identity,
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"application/json": identity,
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"application/javascript": lambda value, meta: f"<script>{value}</script>",
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}
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def eval_formatter(obj, print_method):
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"""
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Evaluates a formatter method.
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"""
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if print_method == "__repr__":
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return repr(obj)
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elif hasattr(obj, print_method):
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if print_method == "savefig":
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buf = io.BytesIO()
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obj.savefig(buf, format="png")
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buf.seek(0)
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return base64.b64encode(buf.read()).decode("utf-8")
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return getattr(obj, print_method)()
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elif print_method == "_repr_mimebundle_":
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return {}, {}
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return None
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def format_mime(obj):
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"""
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Formats object using _repr_x_ methods.
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"""
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if isinstance(obj, str):
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return obj, "text/plain"
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mimebundle = eval_formatter(obj, "_repr_mimebundle_")
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if isinstance(mimebundle, tuple):
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format_dict, _ = mimebundle
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else:
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format_dict = mimebundle
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output, not_available = None, []
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for method, mime_type in reversed(MIME_METHODS.items()):
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if mime_type in format_dict:
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output = format_dict[mime_type]
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else:
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output = eval_formatter(obj, method)
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if output is None:
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continue
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elif mime_type not in MIME_RENDERERS:
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not_available.append(mime_type)
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continue
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break
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if output is None:
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if not_available:
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console.warning(
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f"Rendered object requested unavailable MIME renderers: {not_available}"
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)
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output = repr(output)
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mime_type = "text/plain"
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elif isinstance(output, tuple):
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output, meta = output
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else:
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meta = {}
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return MIME_RENDERERS[mime_type](output, meta), mime_type
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class PyScript:
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loop = loop
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@staticmethod
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def write(element_id, value, append=False, exec_id=0):
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"""Writes value to the element with id "element_id"""
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console.log(f"APPENDING: {append} ==> {element_id} --> {value}")
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if append:
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child = document.createElement("div")
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element = document.querySelector(f"#{element_id}")
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if not element:
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return
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exec_id = exec_id or element.childElementCount + 1
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element_id = child.id = f"{element_id}-{exec_id}"
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element.appendChild(child)
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element = document.getElementById(element_id)
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html, mime_type = format_mime(value)
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if mime_type in ("application/javascript", "text/html"):
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script_element = document.createRange().createContextualFragment(html)
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element.appendChild(script_element)
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else:
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element.innerHTML = html
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@staticmethod
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def run_until_complete(f):
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_ = loop.run_until_complete(f)
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class Element:
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def __init__(self, element_id, element=None):
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self._id = element_id
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self._element = element
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@property
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def id(self):
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return self._id
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@property
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def element(self):
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"""Return the dom element"""
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if not self._element:
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self._element = document.querySelector(f"#{self._id}")
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return self._element
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@property
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def value(self):
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return self.element.value
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@property
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def innerHtml(self):
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return self.element.innerHtml
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def write(self, value, append=False):
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console.log(f"Element.write: {value} --> {append}")
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# TODO: it should be the opposite... pyscript.write should use the Element.write
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# so we can consolidate on how we write depending on the element type
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pyscript.write(self._id, value, append=append)
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def clear(self):
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if hasattr(self.element, "value"):
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self.element.value = ""
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else:
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self.write("", append=False)
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def select(self, query, from_content=False):
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el = self.element
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if from_content:
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el = el.content
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_el = el.querySelector(query)
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if _el:
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return Element(_el.id, _el)
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else:
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console.log(f"WARNING: can't find element matching query {query}")
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def clone(self, new_id=None, to=None):
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if new_id is None:
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new_id = self.element.id
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clone = self.element.cloneNode(True)
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clone.id = new_id
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if to:
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to.element.appendChild(clone)
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# Inject it into the DOM
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self.element.after(clone)
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return Element(clone.id, clone)
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def remove_class(self, classname):
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if isinstance(classname, list):
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for cl in classname:
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self.remove_class(cl)
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else:
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self.element.classList.remove(classname)
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def add_class(self, classname):
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self.element.classList.add(classname)
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def add_classes(element, class_list):
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for klass in class_list.split(" "):
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element.classList.add(klass)
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def create(what, id_=None, classes=""):
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element = document.createElement(what)
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if id_:
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element.id = id_
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add_classes(element, classes)
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return Element(id_, element)
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class PyWidgetTheme:
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def __init__(self, main_style_classes):
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self.main_style_classes = main_style_classes
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def theme_it(self, widget):
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for klass in self.main_style_classes.split(" "):
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widget.classList.add(klass)
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class PyItemTemplate(Element):
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label_fields = None
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def __init__(self, data, labels=None, state_key=None, parent=None):
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self.data = data
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self.register_parent(parent)
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if not labels:
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labels = list(self.data.keys())
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self.labels = labels
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self.state_key = state_key
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super().__init__(self._id)
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def register_parent(self, parent):
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self._parent = parent
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if parent:
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self._id = f"{self._parent._id}-c-{len(self._parent._children)}"
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self.data["id"] = self._id
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else:
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self._id = None
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def create(self):
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console.log("creating section")
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new_child = create("section", self._id, "task bg-white my-1")
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console.log("creating values")
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console.log("creating innerHtml")
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new_child._element.innerHTML = dedent(
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f"""
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<label for="flex items-center p-2 ">
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<input class="mr-2" type="checkbox" class="task-check">
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<p class="m-0 inline">{self.render_content()}</p>
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</label>
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"""
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)
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console.log("returning")
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return new_child
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def on_click(self, evt):
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pass
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def pre_append(self):
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pass
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def post_append(self):
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self.element.click = self.on_click
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self.element.onclick = self.on_click
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self._post_append()
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def _post_append(self):
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pass
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def strike(self, value, extra=None):
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if value:
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self.add_class("line-through")
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else:
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self.remove_class("line-through")
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def render_content(self):
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return " - ".join([self.data[f] for f in self.labels])
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class PyListTemplate:
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theme = PyWidgetTheme("flex flex-col-reverse mt-8 mx-8")
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item_class = PyItemTemplate
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def __init__(self, parent):
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self.parent = parent
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self._children = []
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self._id = self.parent.id
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@property
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def children(self):
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return self._children
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@property
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def data(self):
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return [c.data for c in self._children]
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def render_children(self):
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binds = {}
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for i, c in enumerate(self._children):
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txt = c.element.innerHTML
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rnd = str(time.time()).replace(".", "")[-5:]
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new_id = f"{c.element.id}-{i}-{rnd}"
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binds[new_id] = c.element.id
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txt = txt.replace(">", f" id='{new_id}'>")
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print(txt)
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def foo(evt):
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console.log(evt)
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evtEl = evt.srcElement
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srcEl = Element(binds[evtEl.id])
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srcEl.element.onclick()
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evtEl.classList = srcEl.element.classList
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for new_id in binds:
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Element(new_id).element.onclick = foo
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def connect(self):
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self.md = main_div = document.createElement("div")
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main_div.id = self._id + "-list-tasks-container"
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if self.theme:
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self.theme.theme_it(main_div)
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self.parent.appendChild(main_div)
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def add(self, *args, **kws):
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if not isinstance(args[0], self.item_class):
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child = self.item_class(*args, **kws)
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else:
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child = args[0]
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child.register_parent(self)
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return self._add(child)
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def _add(self, child_elem):
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console.log("appending child", child_elem.element)
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self.pre_child_append(child_elem)
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child_elem.pre_append()
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self._children.append(child_elem)
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self.md.appendChild(child_elem.create().element)
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child_elem.post_append()
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self.child_appended(child_elem)
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return child_elem
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def pre_child_append(self, child):
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pass
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def child_appended(self, child):
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"""Overwrite me to define logic"""
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pass
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class OutputCtxManager:
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def __init__(self, out=None, output_to_console=True, append=True):
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self._out = out
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self._prev = out
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self.output_to_console = output_to_console
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self._append = append
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def change(self, out=None, err=None, output_to_console=True, append=True):
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self._prev = self._out
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self._out = out
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self.output_to_console = output_to_console
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self._append = append
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console.log("----> changed out to", self._out, self._append)
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def revert(self):
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console.log("----> reverted")
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self._out = self._prev
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def write(self, txt):
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console.log("writing to", self._out, txt, self._append)
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if self._out:
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pyscript.write(self._out, txt, append=self._append)
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if self.output_to_console:
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console.log(self._out, txt)
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class OutputManager:
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def __init__(self, out=None, err=None, output_to_console=True, append=True):
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sys.stdout = self._out_manager = OutputCtxManager(
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out, output_to_console, append
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)
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sys.stderr = self._err_manager = OutputCtxManager(
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err, output_to_console, append
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)
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self.output_to_console = output_to_console
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self._append = append
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def change(self, out=None, err=None, output_to_console=True, append=True):
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self._out_manager.change(out, output_to_console, append)
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sys.stdout = self._out_manager
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self._err_manager.change(err, output_to_console, append)
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sys.stderr = self._err_manager
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self.output_to_console = output_to_console
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self.append = append
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def revert(self):
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self._out_manager.revert()
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self._err_manager.revert()
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sys.stdout = self._out_manager
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sys.stderr = self._err_manager
|
||||
console.log("----> reverted")
|
||||
|
||||
|
||||
pyscript = PyScript()
|
||||
output_manager = OutputManager()
|
||||
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Reference in New Issue
Block a user