On 27.1.2012 20:02, Ian Hickson wrote:
On Thu, 20 Oct 2011, Bronislav Klu�~Mka wrote:
Would it be possible to extend canvas specification to include scroll
bar functionality? To add scroll bar, to manage scroll bar (total size,
page size). Creating control based on canvas that needs scrollbar at
this point is unnecessarily difficult at this point.
It is expected that the component model feature being discussed in the
public-weba...@w3.org mailing list will be how you make widgets on the
platform.
You wouldn't want to put the scrollbar in the canvas itself, since then it
wouldn't follow platform native conventions, for example. Instead, you
would create a widget which uses overflow:scroll with an element of the
right height or width to create scrollbars, and then you would react to
scroll events to repaint the canvas.
How does scrollbar on div, p, textarea etc. follow platform native
conventions but scroll bar on canvas would not?
On Thu, 20 Oct 2011, Bronislav Klu�~Mka wrote:
b) how about creating user controls using canvas? (rich controls are
better doing this way, one has pixel perfect control, full browser
compatibility) like document viewer, rich listview/treeview control...
Generally speaking, canvas isn't intended for anything but the simplest of
interactive controls.
HTH,
Generally speaking, widgets are intended to be HTML container, which
makes them far inferior to possibilities of canvas... simpler, but
inferior (as is any HTML container at this point).
Brona
