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https://issues.apache.org/jira/browse/GUACAMOLE-187?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Jumper updated GUACAMOLE-187:
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Fix Version/s: 0.9.12-incubating
> Improve performance of layer/surface resize
> -------------------------------------------
>
> Key: GUACAMOLE-187
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-187
> Project: Guacamole
> Issue Type: Improvement
> Components: guacamole-common-js, guacamole-server
> Reporter: Michael Jumper
> Assignee: Michael Jumper
> Fix For: 0.9.12-incubating
>
>
> Resizing a layer is an expensive operation within the client, as it requires
> making a full copy of the contents of the canvas backing the layer. By the
> standard, the contents of the canvas tag must be cleared when the size is
> changed, thus the Guacamole client needs to save and restore the graphical
> state of the canvas prior to resizing.
> Similarly, on the server, resizing a surface involves allocating enough space
> to hold the new image and copying the data over. For large surfaces, this can
> be expensive.
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