Signal

VipsImage::eval

Declaration

void
eval (
  VipsImage* self,
  VipsProgress* progress,
  gpointer user_data
)

Description [src]

The ::eval signal is emitted once per work unit (typically a 128 x 128 area 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.

Use vips_image_set_progress() to turn on progress reporting for an image.

Default handler:

The default handler is called after the handlers added via g_signal_connect().

Parameters

`progress`	`VipsProgress`
	`VipsProgress` for this image.
	The data is owned by the caller of the function.