Re: [PATCH gitweb] Visually indicating patch size with horizontal bars

[Chris Shoemaker <c.shoemaker@cox.net>]

On Mon, Dec 05, 2005 at 01:04:42AM +0100, Petr Baudis wrote:
> Dear diary, on Wed, Nov 02, 2005 at 01:12:06AM CET, I got a letter
> where Chris Shoemaker <c.shoemaker@cox.net> said that...
> > On Wed, Nov 02, 2005 at 12:33:38PM +1300, Martin Langhoff wrote:
> > > On 11/2/05, Petr Baudis <pasky@suse.cz> wrote:
> > > > What about having the color indicate the number of affected files (let's
> > > > say on a blue..red scale) and the width the size of patch?
> > > 
> > > I'm a /little bit/ colour blind on the red scale -- so I vote for 2
> > > bars, each half the heigth of the current bar.  ;-)
> > 
> > I was going to use two bars for add vs. delete, but this could work,
> > too.  I'm intending on getting back to this ASAP, but for now my
> > cvsimport problems are higher priority (see other post).
> 
> Is there any progress, by the way?

A little.  I decided to follow Junio's suggestion of caching the
result of "git-diff-tree -r -p $commit | git-apply --numstat" in a
BerkeleyDB.  (I liked the idea of reusing the cached results on the
commit page, too.)  I got a script to populate the cache, then I
suspect could be easily adapting into a commit-hook.  Then I started
working on the gitweb part and tried to follow another suggestion
(Kay's, I think.) to use CSS instead of (yet another) embedded .png.

This is where I got hung up: I discovered something strange (to me, at
least) about CSS/html: I'm using the <td></td> in the fifth column of
the shortlog.  I tried to use an anchor tag for the added count and
one for the deleted count.  Setting "display:block" and the different
background-colors works (produces stacked horizontal bars), as does
setting various widths (an essential point), but *ONLY* using "width"
in the CSS.  Using width anchor attribute simply doesn't work.

Honestly, html/css is not my strong suit and neither is perl, although
the BerkeleyDB perl API seemed simple enough.

> If you didn't manage to finish it, no big deal - but it would be great
> to have at least the last version you screenshotted, since IIRC I
> couldn't find that one either, and I would like to play with it a bit.

I'm happy for anyone to take this over.  Since my excursion into css
didn't really work, I'd suggest starting with the gitweb-difftreeP.cgi
version.  I will send you (and anyone else who asks) that file and the
cache population script.

-chris