Caching objects for faster display
The Cache Object command can be used to speed up the display of
complex objects. This is useful when a document contains complex
objects that you do not need to edit often. When you cache an object,
Canvas stores a low-resolution preview in memory. The preview can
be displayed quickly when you move the object or change views.
You can cache any type of object for faster display.
To cache an object
1
Select the object to cache.
2
Choose Object > Options > Cache Object.
3
A dialog box appears. Enter a preview resolution value, from 2
to 300 pixels per inch, in the text box. Lower resolutions produce
rougher previews.
4
Click OK. Canvas displays a preview of the cached object at
the resolution you entered.
To uncache an object
The Uncache Object command replaces the preview of a cached
object with the actual object at normal resolution.
1
Select a cached object.
2
Choose Object > Options > Uncache Object. Canvas displays
the object at its normal resolution.
Cache display options
Two options in the Display Options dialog box let you control cach-
ing and display of cached objects. Caching in Canvas is a technique
that can dramatically increase display speed.
When an object is cached, Canvas creates a low-resolution version of
the object to display on screen. This can make it much easier to work
in documents that contain complex vector objects or high-resolution
images, which can significantly slow down zooming and scrolling.
When you are not editing cached objects, it usually wont matter that
they are displayed at lower resolution. Youll enjoy significantly
faster display without losing any capabilities. When you do want to
edit a cached object, Canvas loads the original; you do not need to
take any special action or uncache the object.