01-20-2013
Cache is a very good thing. It improves the performance of the OS. Do not reboot your server to clear cache.
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LEARN ABOUT DEBIAN
gtk2::gdk::pixbuf::draw::cache
Gtk2::Gdk::Pixbuf::Draw::Cache(3pm) User Contributed Perl Documentation Gtk2::Gdk::Pixbuf::Draw::Cache(3pm)
NAME
Gtk2::Gdk::Pixbuf::Draw::Cache - Cache for drawing scaled pixbufs
DESCRIPTION
Gtk2::Gdk::Pixbuf::Draw::Cache provides a cache that should be used by the Gtk2::ImageView::Tool when redrawing the Gtk2::ImageView.
HIERARCHY
Glib::Boxed
+----Gtk2::Gdk::Pixbuf::Draw::Cache
METHODS
cache = Gtk2::Gdk::Pixbuf::Draw::Cache->new
Returns a new pixbuf draw cache.
$cache->draw ($opts, $drawable)
o $opts (Gtk2::Gdk::Pixbuf::Draw::Opts)
o $drawable (Gtk2::Gdk::Drawable)
Redraws the area specified in the pixbuf draw options in an efficient way by using caching.
cache : a GdkPixbufDrawCache
opts : the Gtk2::Gdk::Pixbuf::Draw::Opts to use in this draw
drawable : a GdkDrawable to draw on
$cache->free
Deallocates a pixbuf draw cache and all its data.
$cache->invalidate
Force the pixbuf draw cache to scale the pixbuf at the next draw.
Gtk2::Gdk::Pixbuf::Draw::Cache tries to minimize the number of scale operations needed by caching the last drawn pixbuf. It would be
inefficient to check the individual pixels inside the pixbuf so it assumes that if the memory address of the pixbuf has not changed, then
the cache is good to use.
However, when the image data is modified, this assumtion breaks, which is why this method must be used to tell draw cache about it.
method = Gtk2::Gdk::Pixbuf::Draw::Cache->get_method ($old, $new)
o $old (Gtk2::Gdk::Pixbuf::Draw::Opts)
o $new (Gtk2::Gdk::Pixbuf::Draw::Opts)
Gets the fastest method to draw the specified draw options. old is assumed to be the last PixbufDrawOpts used and new is the one to use
this time.
ENUMS AND FLAGS
enum Gtk2::Gdk::Pixbuf::Draw::Method
o 'scale' / 'GDK_PIXBUF_DRAW_METHOD_SCALE'
o 'contains' / 'GDK_PIXBUF_DRAW_METHOD_CONTAINS'
o 'scroll' / 'GDK_PIXBUF_DRAW_METHOD_SCROLL'
SEE ALSO
Gtk2::ImageView, Glib::Boxed
COPYRIGHT
Copyright (C) 2007 by Jeffrey Ratcliffe.
This software is licensed under the GPL-3; see Gtk2::ImageView for a full notice.
perl v5.14.2 2011-11-16 Gtk2::Gdk::Pixbuf::Draw::Cache(3pm)