On Mon, 2008-12-08 at 10:48 +0100, Stéphane Esté-Gracias wrote:
> I'm try to use Cogl to draw rounded rectangles, but I don't understand
> how to use this package.
> Could you explain with sample code how to use Cogl to draw rounded rectangle ?
The Cogl drawing API needs to be used during a paint run. The easiest
way to do this is to connect to the paint signal of an actor.
You can see what parameters the path_round_rectangle function takes in
the C API docs [1].
Here is an example:
use strict;
use warnings;
use Glib;
use Clutter;
use Glib qw( :constants );
use Clutter qw( :init );
sub paint_round_rect
{
Clutter::Cogl->color(Clutter::Color->new(0xff, 0x00, 0x00, 0xff));
Clutter::Cogl->path_round_rectangle(20, 20, 100, 100, 20, 1);
Clutter::Cogl->path_fill();
}
my $stage = Clutter::Stage->get_default();
# Create a 0x0 sized rectangle so we can hang onto its paint
my $rect = Clutter::Rectangle->new();
# Do our drawing when the rectangle paints
$rect->signal_connect(paint => \&paint_round_rect);
$stage->add($rect);
$stage->show();
Clutter->main();
- Neil
[1] http://tinyurl.com/6ez5rh
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