Is it possible to (halfway easily) implement "typewriter" scrolling on the basis of an editor-canvas% and text%. I've discovered scroll-with-bottom-base which already goes in the right direction. Now here is what I'm looking for:
- Editing always takes place on the same line, the edit line, whose location is user-definable e.g. as the 20th line from the topmost visible line or x pixels from the top or bottom of the editor canvas. - Scrolling up: the cursor stays on the edit line and the text around it scrolls down a line. (So part of the text might show up below the edit line.) - Scrolling down: the cursor stays on the edit line and the text around it moves up a line (if there is more text below the edit line.) - Editing: like scroll-with-bottom-base but on the user-defined edit line (usually somewhere in the middle of third half of the canvas, but must be definable somehow) Is this possible? Any ideas how? Are there some internal classes I could modify? Best, Erich _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
