Re: TMultiView, open-source flexible display component (alpha release)

From: Lauchlan M (LMackinnon_at_NOSPAMHotmail.com)
Date: 06/13/04 

Date: Sun, 13 Jun 2004 14:54:38 +1000

> TMultiView (suggestions for a better name kindly accepted ;)

What about TFlexiRepeater? It seems to me to look a bit like a repeater
control in an ASP.NET webpage, except you are definine the window for it as
well.

Like Herbert, I am having some trouble understanding exactly what the
component does. I am thinking (and I hope!) that each item is perhaps an
object, say with properties WebsiteName, WebsiteLink, NumberVisits, and you
define a template into which you put his information. You then feed your
component a list of objects and it spits out a vertically repeated set of
formatted text? Or does it include controls as well?

Thanks!

Lauchlan M

> is a
> component written in Delphi 6, descended from TCustomControl. I haven't
> seen a Delphi component that does what TMultiView does, although some
> expensive grids can probably display data in a similar fashion. It's a bit
> hard to describe, so here's an example screenshot:
>
> http://www.tranglos.com/delphi/demomv.png
>
> Basic idea: one item consists of one or more rows; each row consists of
one
> or more cells, and the number of cells in each row can be different. (This
> is where it departs from a grid - there's no concept of columns). The
> purpose is to display data that typically would be shown in a listview.
The
> problem with a listview is that not a lot of text fits horizontally, so
> horizontal scrolling is usually required or text is shortened to fit
within
> column width. Using a TMultiView you can allocate as much space as you
need
> for each piece of data (cell), but the number of items visible in the
> client area will be smaller than in a listview, since items tend to be
> tall.
>
> TMultiView does not manage a list of items. It only knows the count of
> items and the layout (same for all items). The component uses events to
> query for data to display in each cell - this is a "virtual" mode familiar
> to those who use MIke Lischke's VirtualTree.
>
> Cells can display text or images, have their own font and color, alignment
> (horizontal and vertical), cursor, hint. Cells can contain multi-line text
> and can display borders.
>
> The component is at a very early alpha stage. It compiles and works to the
> extent that you can get a good idea of what it's supposed to be (check the
> demo), but several important features aren't built in yet. I have decided
> to release the component very early, because I hope to receive comments or
> suggestions on how to proceed further; there are several design decisions
> that need to be made. I don't recommend installing it in IDE, because the
> code is not yet aware of design-time issues and it will be changing often
> (including published properties). This is the first visual component I've
> written from scratch and I'm learning all the steps as I go.
>
> Description, screenshot, full source code, executable demo:
> http://www.tranglos.com/delphi/multiview.html
>
> Please see the demo source code for how to create the component
> dynamically, how to design the layout and how to feed data for display
> using events.
>
> TMultiView is open-source (Mozilla Public License).
>
> .marek
>
> --
> No ads, no nags freeware: http://www.tranglos.com
> (KeyNote, PhoneDeck, KookieJar, Oubliette, URLInject)
>
> Venture capitalists sleep like babies. They sleep for two hours,
> then they wake up and cry, then sleep for two hours...
>

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