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Re: Parital scrolling of image
From: |
David Kastrup |
Subject: |
Re: Parital scrolling of image |
Date: |
Sun, 23 Jan 2005 20:32:25 +0100 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/21.3.50 (gnu/linux) |
address@hidden (Kim F. Storm) writes:
> David Kastrup <address@hidden> writes:
>
>> address@hidden (Kim F. Storm) writes:
>>
>>> address@hidden (Kim F. Storm) writes:
>>>
>>>> A brief message to let you know that I've started to look into
>>>> the problem of scrolling through images that are higher/wider
>>>> than the current window.
>>>>
>>>> I've already have a working solution for tall images.
>>>
>>> I have installed my changes. They modify line-move and
>>> scroll-up, scroll-down.
>>>
>>> If you have problems with this, set auto-window-vscroll to nil.
>>
>> Cough, cough. If I have a window with the upper half taken up by an
>> image, and point is in some normal text below the image, then pressing
>> C-n will _not_ move to the next line (which is perfectly on screen and
>> quite far from the edge),
>
> I have checked in some patches to fix this. Please try again.
This looks much better. But here are some remarks:
a) an "open preview" that starts on a line of its own in preview-latex
has an overlay starting at the beginning of the line. This overlay
has a before-string consisting of an image (display-property on a
single x character IIRC) followed by \n (so that the image will appear
on a line of its own). Note that the image as well as the \n are not
connected to a character in the buffer, but appear just as
before-string. Nevertheless, previous-line in the first _real_ line
of the overlay will be sufficiently confused as to not move at all.
Never. This effect is probably not related to the very latest
changes, though. I just noticed it when playing with the new code.
It leads to pretty unintuitive results, though.
b) Making a window as small as possible (2 lines or so) means that
scroll-down and scroll-up, that are supposed to scroll by a "near full
screen", namely `next-screen-context-lines' less than a full screen,
scroll, if at all, in the opposite direction than expected. In case
that the `next-screen-context-lines' less than a full screen delivers
a negative or zero value, 1 should rather be substituted.
This should be a general paradigm: all window-based movement/scrolling
commands should make _some_ progress, and in the _expected_ direction.
c) when pressing next-line, an image will get scrolled in smaller
chunks (by the way, maybe one should be able to configure the size of
those chunks). That is nice. previous-line shows no such behavior,
however: it scrolls an image with one big jump. A bit of symmetry
here would probably be nice to have.
That being said, the behavior we now have for next-line is much much
better than what was available at any previous time.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
- Parital scrolling of image, Kim F. Storm, 2005/01/20
- Re: Parital scrolling of image, David Kastrup, 2005/01/20
- Re: Parital scrolling of image, Richard Stallman, 2005/01/21
- Re: Parital scrolling of image, Kim F. Storm, 2005/01/21
- Re: Parital scrolling of image, David Kastrup, 2005/01/22
- Re: Parital scrolling of image, Kim F. Storm, 2005/01/22
- Re: Parital scrolling of image,
David Kastrup <=
- Re: Parital scrolling of image, Kim F. Storm, 2005/01/24
- Re: Parital scrolling of image, Ralf Angeli, 2005/01/24
- Re: Parital scrolling of image, Ralf Angeli, 2005/01/24
- Re: Parital scrolling of image, Kim F. Storm, 2005/01/24
- Re: Parital scrolling of image, Ralf Angeli, 2005/01/24
- Re: Parital scrolling of image, David Kastrup, 2005/01/24
- Re: Parital scrolling of image, David Kastrup, 2005/01/23
- Re: Parital scrolling of image, David Kastrup, 2005/01/23
- Re: Parital scrolling of image, Kim F. Storm, 2005/01/24