Re: A92: Non-wrapping text?
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Re: A92: Non-wrapping text?
Another thing you could do is use the functions I wrote to get the width of a
string in pixels.
Bryan Christopher Turner wrote:
> > >
> > > > Is there any way to use the TI-92:s built-in text output functions
> > > > without
> > > > wrapping? It looks kinda ugly...
> > > >
> > > My idea about this would be, to program an own DrawStrXY function, using
> > > the DrawCharXY function,
> > > or using the character table in the TI-92's ROM (I think, it's address
> > > can be got by the tios-pseudolib)
> >
> > That would work, but it would be *very* slow. I think the TI-OS must be
> > able to do this somehow - just look at the history of the main screen
> > when you input something long enough.
>
> If you use a function to draw the characters from ROM, and a little counter
> to make sure the text doesn't draw off the edge of the screen, it would be
> remarkably fast. Then you could scroll the line by incrementing the text
> pointer by one char and reprinting the line, scroll back by decrementing.
> Then, never allow the pointer to decrement further back than the beginning of
> the string, and never allow it to increment more than ScreenCharWidth from the
> end. If you wanna get fancy, after drawing the string on the screen, if the
> string pointer is not at the beginning, print a <- at the front, and if the
> string extends beyond the edge of the screen, print a ->.
>
> I'm sure the function is probably in ROM somewhere, try searching for the <-
> and -> symbols in ROM. Then disassembling in that area.
>
> --Bryan
> bcturner@eos.ncsu.edu
References: