Re: [edk2] Console Text Output to last row/column without scrolling?

Subject: Re: [edk2] Console Text Output to last row/column without scrolling?

From: "David F." <df7729@gmail.com>

To: "edk2-devel@lists.sourceforge.net" <edk2-devel@lists.sourceforge.net>

Date: 2013-09-03 07:18:26

Hi,

Having a no scroll option (or no line wrap) has been around for
decades in all kinds of devices - even in dumb terminals with
ANSI/VT100 codes needing it, etc..  Obviously a framework of a console
interface with status bars/etc that go all the way to the end of the
screen, but that will have to be left out so there will be a black
hole in the lower right corner.  You can't update the entire screen
since nothing can exist in that corner.




On Mon, Sep 2, 2013 at 4:25 PM, Andrew Fish  wrote:
>
> On Sep 2, 2013, at 3:19 PM, David F.  wrote:
>
>> Hi,
>>
>> Does anyone have a solution to the subject line.  It really causes a
>> lot of problems that you can't output anything to the last row/column
>> without the screen scrolling because you can never go back and update
>> that spot without things scrolling on you again.
>>
>
> Repaint the entire screen? Or don't use the last line.
>
>> Seems like the details of why you may not want scrolling were
>> overlooked in the text out protocol, perhaps a new Ex protocol is in
>> order?
>>
>
> No it was done to be more compatible with terminal emulation at the time (late 1990's) as the goal was to make terminal emulation 1st class citizens. The initial target of the specification was servers.
>
> There has not been much demand for this. So I don't think the spec would need to change.
>
>
> What are you trying to do? Are you trying to port some existing code? Maybe it is an issue with the glue with the code you are porting.
>
>> TIA!!
>>
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