Enabling and Disabling Annotations!

[Aadil-5122]

Good Evening Sir,

I want to cover/hide a text in a PDF and also, unhide/un-cover the same when needed,

I used a "rectangular annotation" for the same the code for which is as follows:

rect= (386.2793884277344, 711.2273559570312, 470.71710205078125, 723.1173095703125)
annot1= page.add_rect_annot(rect)

for unhiding:

annot1.set_colors(fill=None, stroke=None)
annot1.set_opacity(0)
annot1.update( )
page= doc.reload_page(page)

for hiding:

annot1.set_colors(fill=(1, 1, 1), stroke=(1, 1, 1))
annot1.set_opacity(1)
annot1.update()
page= doc.reload_page(page)

for again unhiding/un-covering:

annot1.set_colors(fill=None, stroke=None)
annot1.set_opacity(0)
annot1.update( )
page= doc.reload_page(page)

The Problem i am facing is that once i have hide the text (using above specified code), i am not able to see it (the text) when i try to unhide it (using the above specified code).

where am i going wrong?

[JorjMcKie]

This works as it should:

import fitz
from PIL import Image
import io

doc = fitz.open()
page = doc.new_page()
r = fitz.Rect(100, 100, 300, 300)
text = """Some text to be visible,
to be visible depending on an
annotation overlaying it."""

# insert text and show the page
page.insert_textbox(r, text)
fp = io.BytesIO(page.get_pixmap().tobytes())
img = Image.open(fp)
img.show()

# cover text by white rect annot and show
a = page.add_rect_annot(r)
a.set_colors(fill=(1, 1, 1), stroke=(1, 1, 1))
a.update()
page = doc.reload_page(page)
fp = io.BytesIO(page.get_pixmap().tobytes())
img = Image.open(fp)
img.show()

# set annot to fully transparent and show again
a.set_opacity(0)
a.update()
page = doc.reload_page(page)
fp = io.BytesIO(page.get_pixmap().tobytes())
img = Image.open(fp)
img.show()

page = None
doc.close()