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Gtk2::ImageView::Zoom.3pm

NAME

Gtk2::ImageView::Zoom - Functions for dealing with zoom factors

DESCRIPTION

GtkImageView uses a discrete amount of zoom factors for determining which zoom to set. Using these functions, it is possible to retrieve information and manipulate a zoom factor.

METHODS

double = Gtk2::ImageView::Zoom->clamp_zoom ($zoom)

*

$zoom (double)

Returns the zoom factor clamped to the minumum and maximum allowed value.

zoom : A zoom factor.

Returns

The zoom factor clamped to the interval [min, max].

double = Gtk2::ImageView::Zoom->get_max_zoom

Returns the maximum allowed zoom factor.

Returns

The maximal zoom factor.

double = Gtk2::ImageView::Zoom->get_min_zoom

Returns the minimum allowed zoom factor.

Returns

The minimal zoom factor.

double = Gtk2::ImageView::Zoom->get_zoom_in ($zoom)

*

$zoom (double)

Returns the zoom factor that is one step larger than the supplied zoom factor.

zoom : A zoom factor.

Returns

a zoom factor that is one step larger than the supplied one

double = Gtk2::ImageView::Zoom->get_zoom_out ($zoom)

*

$zoom (double)

Returns the zoom factor that is one step smaller than the supplied zoom factor.

zoom : A zoom factor.

Returns

a zoom factor that is one step smaller than the supplied one.

SEE ALSO

Gtk2::ImageView

COPYRIGHT

Copyright (C) 2007 by Jeffrey Ratcliffe.

This software is licensed under the GPL-3; see Gtk2::ImageView for a full notice.

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