Michael Jumper created GUACAMOLE-187:
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Summary: 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
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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