[gtk-server] Re: How to access to the pixbuf data
- From: "Guillaume Legris" <glegris@xxxxxxxxxxxx>
- To: gtk-server@xxxxxxxxxxxxx
- Date: Mon, 30 Apr 2007 12:56:17 +0200
Hi Peter,
Thanks for your answer.
As I have to use the client remotely, I need to add new GTK-SERVER
calls to read/write data at the given address, like:
gtk_server_set_data, NONE, NONE, LONG (address), BASE64 (data)
gtk_server_get_data, NONE, BASE64 (data), LONG (address), LONG (length)
Am I right ?
Regards,
Guillaume Legris
2007/4/28, Peter van Eerten <administrator@xxxxxxxxxxxxxx>:
Hi there,
First I would define the call 'gdk_pixbuf_new_from_data()' in the
configfile as follows:
FUNCTION_NAME = gdk_pixbuf_new_from_data, NONE, WIDGET, 9, STRING,
LONG, BOOL, LONG, LONG, LONG, LONG, NULL, NULL
The keyword 'STRING' in fact represents a C character pointer. If you
define your image somewhere in memory, and pass the pointer to that
memory as a number here, it should work.
If you plan to use 'gdk_pixbuf_get_pixels()' as well:
FUNCTION_NAME = gdk_pixbuf_get_pixels, NONE, STRING, 1, WIDGET
This will return a (char-) pointer, which in fact is a number pointing
to memory.
Please let me know if this works.
Regards
Peter
Quoting Guillaume Legris <glegris@xxxxxxxxxxxx>:
> Hi,
>
> I'm writing a (TCP-based) Java client for GTK-server and I need to
> draw an array of pixels created from the Java side.
>
> I tried gdk_draw_point (as shown in
> http://www.gtk-server.org/fractal.ksh) but it's too slow when there
> are too many pixels to write.
>
> I would like using gdk_pixbuf_new_from_data() and/or accessing to the
> pixbuf pixels with gdk_pixbuf_get_pixels (pixbuf) instead.
>
> How could I pass an array to the gdk_pixbuf_new_from_data() method ?
> Is there a way to access to the pixels ?
>
> Thanks in advance.
>
> Regards,
> Guillaume Legris
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