Counting references to images displayed in multiple views

摘要

Methods and apparatus provide for a Cache Manager to display a scaled image in an active view. The scaled image comprises the same content as an image from a stored collection of images, which is accessible by a plurality of active views in a user interface. The Cache Manager refreshes the active view to replace the displayed scaled image with a larger-sized image, which comprises the same content as the displayed scaled image. A reference counter associated with the larger-sized image is maintained to keep track of instances of display of the larger-sized image by any of the plurality of active views. The Cache Manager allows any other active view to use the larger-sized image while a current value of the reference counter is greater than zero.