how does a scrolling rectangle area get implemented?

chjj / blessed

A high-level terminal interface library for node.js.

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how does a scrolling rectangle area get implemented? #402

Open xetum opened 4 years ago

xetum commented 4 years ago

out of curiosity, how is scrolling in a box implemented? I guess CSR cannot be used because scrolling would take effect outside of the rectangle. Have box contents to be fully rewritten?