peskin@caip.rutgers.edu (R. L. Peskin) (04/05/91)
Under PPS 2.5 we were able to rotate strings, because we could convert strings to Images. Does anyone know how this can be done under PPS Re. 4? It appears that Text is directly written to the display surface in the appropriate GraphicsContext (like it is in X). Any ideas on how to convert a String to an Image (short of a set of new primitives)? --dick peskin %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Richard L. Peskin Computational Engineering Systems Lab CAIP Center P. O. Box 1390 Rutgers University Piscataway, N. J. 08855-1390 net: peskin@caip.rutgers.edu AppleLink: D6615 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
bjorne@nada.kth.se (Bj|rn Eiderb{ck) (04/05/91)
In article <Apr.4.17.23.12.1991.18245@caip.rutgers.edu> peskin@caip.rutgers.edu (R. L. Peskin) writes: > >Under PPS 2.5 we were able to rotate strings, because we could convert strings >to Images. Does anyone know how this can be done under PPS Re. 4? It appears >that Text is directly written to the display surface in the appropriate >GraphicsContext (like it is in X). Any ideas on how to convert a String to an >Image (short of a set of new primitives)? > >--dick peskin > > >%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% > Richard L. Peskin Computational Engineering Systems Lab > CAIP Center P. O. Box 1390 Rutgers University > Piscataway, N. J. 08855-1390 > net: peskin@caip.rutgers.edu AppleLink: D6615 >%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% > > You could for example create an instance of a Pixmap and do the following: 1) send the message displayString:at: to the pixmaps graphicsContext with the string and position as arguments. 2) convert the pixmap to an image via the method asImage. 3) finally rotate and display the image via the messages rotatedByQuadrants: and displayOn:. Here is a simple example of this (in the class Pixmap): exampleRotatedText "Pixmap exampleRotatedText" | ext pix gc | ext := 400 @ 20. pix := self extent: ext. pix graphicsContext displayString: 'This is the string that should be rotated!' at: 0 @ 10. gc := ScheduledControllers activeController view graphicsContext. (pix asImage rotatedByQuadrants: 1) displayOn: gc -- bjorn eiderback *************************************************************** Bjorn Eiderback Department of Numerical Analysis and Computing Science Royal Institute of Technology S-100 44 Stockholm Sweden e-mail: bjorne@nada.kt.se voice: +46 (8) 790 6277 ***************************************************************