This library provides a common interface to different image formats. This is achieved by using a strategy pattern in the form of a driver with a set of primitives. These primitives are selected to provide as much functionality for each format as possible, while still retaining a simple and common interface.

The current implementation/version supports the following drawing functions:

• Line
• Rectangle
• Polygon
• Spline
• Ellipse
• Pie slice
• Text output
• Image overlay (”draw” an image)

Supported styles are (also depending on output format):

• Line styles
• Solid
• Thickness
• “Patterned”
• Fills
• Solid
• Alpha blending
• Image fill
• Gradients
• Fonts - Mostly true-types (for server-side at least)

Image_Canvas supports creation of clickable image maps

PEAR::Image_Canvas

API Documentation (version 0.2.1)