Re: Gtk2::Image Loading a png from scalar

If these libraries can create uncompressed image data, then you can
create an image without going to disk through the
Gtk2::Gdk::Pixbuf->new_from_data function. I'm using it e.g. to
directly display piddles (Perl Data Language structures). Here 
is what I do:

    my($w,$h) = ($rgb->dims)[1,2];
    my $img = Gtk2::Gdk::Pixbuf->new_from_data(${$rgb->get_dataref},
                                              0, 8,
                                              $w,$h, $w*3);

The $rgb->get_dataref call returns (a reference to) a scalar
containing the RGB values.

The pixbuf is then easily placed in an Gtk::Image .

There doesn't seem to be a way of doing the same with compressed
png data though...


On Tue, Aug 03, 2004 at 12:13:39PM -0400, William B Carlson wrote:
I have a library (GD::Graph, GD::Dashboard, etc) that can create an image 
and put it in scalar reference.  It can also make a physical file on the 
file system which I can load in with 
What I want to know is if there is a way to take the scalar
( my $image = $dash->png() ) that the library can produce and load that 
into the application without having to write the file to the file system 
and read it again. 

Thanks for your time, 

Ben Carlson 

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