[Phpmyadmin-devel] GSoG 2011: Reg Zoom-search idea

[Ammar Yasir]

On Wed, Mar 23, 2011 at 4:33 PM, Piotr Przybylski <piotr.prz at gmail.com>wrote:

> 2011/3/23 Ammar Yasir <ammaryasir.88 at gmail.com>:
> >
> >
> > On Wed, Mar 23, 2011 at 1:01 AM, Piotr Przybylski <piotr.prz at gmail.com>
> > wrote:
> >>
> >> 2011/3/22 Marc Delisle <marc at infomarc.info>:
> >> > Ammar Yasir a écrit :
> >> >>
> >> >>
> >> >> On Tue, Mar 22, 2011 at 11:24 PM, Marc Delisle <marc at infomarc.info
> >> >> <mailto:marc at infomarc.info>> wrote:
> >> >>
> >> >>     Ammar Yasir a écrit :
> >> >>
> >> >>      > May I ask what quality aspect should this system focus on. It
> >> >>     should be
> >> >>      > correct, but what about trade off between system response time
> >> >> and
> >> >>      > functionality. Like for example, Zooming feature. Should it be
> >> >>     like from
> >> >>      > 1X->2X or should the image magnify gradually. Since pchart
> will
> >> >>     produce
> >> >>      > static images, some of these issues will be faced while
> >> >> designing.
> >> >>
> >> >>     I would prefer a gradual zoom but haven't made any research about
> >> >> how to
> >> >>     implement this. If pChart is not the best tool for this, you can
> >> >> look
> >> >>     for a better one. The other day I mentionned pChart because we
> are
> >> >>     currently using it (in phpMyAdmin 3.4) for static charts.
> >> >>
> >> >> So, is it like we can use any type of zoom but whenever the number of
> >> >> points in the screen fall below a certain number, we show labels?
> >> >
> >> > I think it's more when the user ceases to see big clusters of data
> >> > points and is able to perceive the distinct points.
> >> >
> >> >>
> >> >> Also, I think in pChart its not very straight forward to implement
> >> >> clickable items(click data points  to view data row). We would have
> to
> >> >> use CSS with overlaid items.
> >> >>
> >> >>
> >> >>
> >> >>     OTOH if there is no open tool for a gradual zoom (web), going in
> >> >>     increments (say, with buttons) will be fine.
> >> >>
> >> >> I also have never implemented such but I found something on the net,
> >> >> http://www.cssplay.co.uk/menu/image_magnifier2.html . I'll try to
> look
> >> >> for something like this.
> >> >
> >>
> >> Maybe SVG? Vector output would give users faster feedback (no need to
> >> generate big bitmaps on the server and send them) and allow for fluent
> >> scaling in browser. Recently even IE got native support, with the
> >> release of IE 9.
> >>
> > What about JpGraph?
> >
>
> JpGraph generates bitmaps, I am proposing SVG to avoid this and
> provide scaling in browser. With bitmap output any panning and zooming
> will require round trips to server and execution of (almost) the same
> query again. With SVG you can generate one image and process it in
> browser. It will give users faster feedback and save us from including
> another charting library.
>
> I looked around if we can use SVG for this. One thing I found everyone
saying was that SVG integration with HTML, particularly with inline SVG is
someway incomplete. Is it so?
Also, i looked up on jquerySVG(http://keith-wood.name/svg.html). This can
provide for most of the functionality required here.


> --
> Piotr Przybylski
>
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