More about Drawing

In Squeak, the programmer can choose between different drawing tools. It is even possible to use serveral drawing tools to create one drawing (in very much the same way as you can combine different materials and techniques to create a painting). The available drawing tools are:

• BitBlt
  to draw lines, to fill rectangular areas and to move parts of an image. Like all drawing tools, BitBlt maintains a clipping rectangle.
• Pen
  an enhanced form of BitBlt that adds protocol to move a pen and to change its state. This is sometimes called "turtle graphics".
• GrafPort
  an enhanced BitBlt that offers support for translucent colors and filled contours
• WarpPort
  an enhanced BitBlt that offers support for rotated images
• FormCanvas
  a tool that uses a GrafPort for some drawing operations and a BalloonCanvas for others.
• BalloonCanvas
  an enhanced FormCanvas that offers support for antialiasing, for gradient filling and geometric transformations. BalloonCanvas is a suitable tool for scalable vector graphics. BalloonCanvas uses a plugin (encapsulated in BalloonEngine) for rapid drawing.