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Essential App Engine: Building High-Performance Java Apps with Google App Engine by Adriaan de Jonge

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Chapter 13: Manipulating Images with the App Engine Image Service

Google App Engine does not allow using java.awt.Image and related classes. Instead, it offers its own service for image manipulation. This chapter starts with a brief discussion of when to use the Image API and when not to. Then it provides code examples for frequently used features of the API. Finally, this chapter explores other uses of the API by showing how to place, for example, copyright notices over images.

Minimizing the Use of the Image API

The App Engine provides an Image API allowing you to perform a small number of rudimentary manipulations on images server side. Although it is good to have such an API at your disposal, it should be used sparingly. In many cases, there ...

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