enum Vips::Enums::Signal

Overview

Signals that can be used on an Image. See GObject#signal_connect

Defined in:

vips/enums.cr

Enum Members

PreEval = 0

Evaluation is starting The preeval signal is emitted once before computation of Image starts. It's a good place to set up evaluation feedback.

Eval = 1

The eval signal is emitted once per work unit (typically a 128 x 128 are of pixels) during image computation

You can use this signal to update user-interfaces with progress feedback. Beware of updating too frequently: you will usually need some throttling mechanism

PostEval = 2

Ealuation is ending The posteval signal is emitted once at the end of the computation of Image. It's a good place to shut down evaluation feedback.

Instance Method Summary

Instance Method Detail

def eval? #

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def post_eval? #

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def pre_eval? #

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