[racket] How to make slide align left in Slideshow

Thank you very much! I know what to do now.

2013-09-14



ironson



发件人：Stephen Chang <stchang at ccs.neu.edu>
发送时间：2013-09-14 01:49
主题：Re: [racket] How to make slide align left in Slideshow
收件人："J. Ian Johnson"<ianj at ccs.neu.edu>
抄送："Racket Users"<users at racket-lang.org>

> I tend to just use (vl-append gap-size items ...) 

That doesn't align left relative to the entire slide. You'd have to 
wrap a para or something else around it. 

Here is a super basic macro that aligns-left everything on a slide: 

(define-syntax-rule (left-slide title x ...) 
  (slide #:title (para title) (para (vl-append gap-size x ...)))) 


(left-slide 
 "Please align left" 
 (t "Hello") 
 (t "World")) 



> -Ian 
> ----- Original Message ----- 
> From: "Laurent" <laurent.orseau at gmail.com> 
> To: "Stephen Chang" <stchang at ccs.neu.edu> 
> Cc: users at racket-lang.org 
> Sent: Friday, September 13, 2013 1:33:58 PM GMT -05:00 US/Canada Eastern 
> Subject: Re: [racket] How to make slide align left in Slideshow 
> 
> 
> 
> In complement, note that it's quite common to use (item "Some text") and (subitem "One precision: ..."), which are left-aligned (but, like `para', has a #:align keyword for another kind of alignment). 
> 
> Laurent 
> 
> 
> 
> 
> On Fri, Sep 13, 2013 at 6:11 PM, Stephen Chang < stchang at ccs.neu.edu > wrote: 
> 
> 
> I dont think there's any way to specify the alignment of the entire 
> slide. You'd have to do each element separately. 
> 
> For example, using 
> 
> (para "Please align left") 
> 
> as the title would align left and 
> 
> (para #:align 'right "Please align left") 
> 
> would align right. 
> 
> If all your slides have the same structure, you could define a new slide macro. 
> 
> 
> 
> 
> 
> On Fri, Sep 13, 2013 at 11:31 AM, ironson < ironson at 126.com > wrote: 
>> Hi all, 
>> 
>> I am writing for a presentation using Slideshow. I want to align picts left. 
>> But it aligns center. Below is my code 
>> 
>> #lang slideshow 
>> 
>> (slide 
>> #:title "Please align left" 
>> (t "Hello") 
>> (t "World")) 
>> Thanks! 
>> 
>> 2013-09-13 
>> ________________________________ 
>> ironson 
>> 
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