| Title: | DECWINDOWS 26-JAN-89 to 29-NOV-90 |
| Notice: | See 1639.0 for VMS V5.3 kit; 2043.0 for 5.4 IFT kit |
| Moderator: | STAR::VATNE |
| Created: | Mon Oct 30 1989 |
| Last Modified: | Mon Dec 31 1990 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 3726 |
| Total number of notes: | 19516 |
My customer has nice transformation routines to scale graphic elements (icons) consisting of polygons, squares, arcs... He will be able to port this to Xlib without too big problems, but there is one tricky thing. Inside such an icon there can be text. Now we don't want to use region scaling as a tool, giving a problem on how to scale text. Decwindows gives us a lot of fonts of four or five different point sizes in discrete steps. How could we implement continuous scaling of text inside a graphic icon then ? Or do we have to be satisfied with using discrete scaling steps (100%,50%...) ? Dominique
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1049.1 | PDVAX::P_DAVIS | Peter Davis | Fri Jul 14 1989 18:07 | 14 | |
Well, the "right" way to do it would be to see if there's already a
font for the size of text that would result from the scaling. If there
isn't, then you have to scale an existing font using bitmap scaling
techniques.
The trick is choosing the bitmap font which would give the best results
after scaling. For example, if you had a 6 point font and a 14 point
font, and you wanted twelve, you could just quadruple every bit in the
6 point font to get a 12 point version. This is pretty simple, but the
results would be pretty jagged. You could also use sampling techniques
to get a 12 point font from the 14 point one.
Or, you could wait for Display PostScript.
| |||||