On Dec 23, 2011 2:43 PM, "Jeffrey Palmer" <jeffrey.t.pal...@gmail.com>
wrote:
>
> I just realized this was discussed on Github, so you can probably
> ignore what I wrote.
>
> Regarding the surface, SDLx::App is a SDLx::Surface. That's what I
> was referring to. I don't think it's safe to make any assumptions
> about what's behind the text, so it should be the module user's
> responsibility to clear whatever is behind it.
Hmm can we just not make the blit for clearing the text surface? Cause it
wraps an sdl::surface.
>
> On Fri, Dec 23, 2011 at 2:39 PM, Kartik Thakore
> <thakore.kar...@gmail.com> wrote:
> > But the surface is not an SDLx::Surface ... maybe we should change that
at
> > least on the text surface. I think that once you decide to rewrite on
the
> > text surface it should do that.
> >
> > How about we add $text->clear(); ?
> >
> > On Fri, Dec 23, 2011 at 2:37 PM, Jeffrey Palmer <
jeffrey.t.pal...@gmail.com>
> > wrote:
> >>
> >> Hi Alex,
> >>
> >> This is actually the correct behavior. You need to redraw the
> >> background before writing the new text. The easiest way to do that is
> >> with:
> >> $app->draw_rect( undef, 0x000000FF );
> >>
> >> The undef there indicates that the entire surface should be used as
> >> the rectangle. See draw_rect in SDLx::Surface for more information.
> >>
> >> Cheers,
> >> Jeff
> >>
> >> On Wed, Dec 21, 2011 at 6:17 PM, Alex <cap...@gmx.de> wrote:
> >> > Dear all!
> >> >
> >> > I want to replace an SDLx::Text by some other text.
> >> > Do I have to redraw the whole surface that was covered by the old
text
> >> > in
> >> > order to "replace" it by a new text?
> >> >
> >> > The following script demonstrates my problem:
> >> >
> >> > [code]
> >> > #!perl
> >> >
> >> > use strict;
> >> > use warnings;
> >> > use SDL;
> >> >
> >> > use SDL;
> >> > use SDLx::App;
> >> > use SDLx::Text;
> >> >
> >> > my $app = SDLx::App->new(
> >> > exit_on_quit => 1,
> >> > );
> >> >
> >> > my $message = SDLx::Text->new;
> >> >
> >> > $message->write_to( $app, "Hello, World!" );
> >> > $app->update;
> >> >
> >> > $message->text('Susan');
> >> > $message->write_to( $app );
> >> > $app->update();
> >> >
> >> > $app->run();
> >> > [/code]
> >> >
> >> > First, the text "Hello World!" is drawn to the surface. Then, I alter
> >> > the
> >> > text and draw it again. But the old hello world text still remains on
> >> > the
> >> > surface.
> >> > I don't want that. I want "Hello World!" to disappear and Susan so
show
> >> > up.
> >> >
> >> > How do I do that?
> >> >
> >> > Best regards,
> >> > Alex
> >> >
> >
> >
>
>
>
> --
> Jeffrey T. Palmer
