Hi,
Not sure if I've found a bug or am simply thick. I'm going with the
latter :D
At: https://git.gnome.org/browse/vala/plain/vapi/cairo.vapi
Down near the end, under the public struct Matrix, look for:
public void multiply (Matrix a, Matrix b);
In the Cairo C docs, it looks like this:
void
On 16/12/2014 12:01, Luca Bruno wrote:
.multiply() is a method of Mmatrix. Therefore you call multiply on an
instance of Matrix which is the one that will get modified.
Ah, thanks Luca.
\d
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On 25/11/2013 16:07, r...@no-log.org wrote:
It's my first attempt in vala :
https://sourceforge.net/projects/valatreeobjects/files/
Thanks for your reply. I just had a look at some of the code and it
feels a little over my head. I'll try again when I get a moment.
Any chance of you
Anyone?
Is there anything in the glibrary that I should look into? Or maybe
generators, like Python has?
\d
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I have a tree of nodes, something like this in pseudocode:
class Node
ArrayList kidnodes
Node parent
So - each node has kids and a parent.
I find myself wanting to foreach over the tree from code that is not
within a Node.
Right now, I'm doing this kind of thing:
class Node
...
public
On 19/11/2013 10:12, Abderrahim Kitouni wrote:
%p.printf(your_object)
Ah. Big thanks!
btw, you don't need when dealing with instances of classes,
Ahhh two :D Will have a look.
your classes inherit from GLib.Object, you can use
your_object.get_type().name() (I'm writing this from memory,
Here's some code:
---
public class Obj : Object {
public string foo;
}
public void main() {
var o = new Obj();
var o1 = new Obj();
var o2 = new Obj();
stdout.printf(o %p\n, o);
stdout.printf(o1 %p\n, o1);
stdout.printf(o2 %p\n, o2);
//YAY!!!
string s =
On 19/11/2013 10:50, Nor Jaidi Tuah wrote:
The answer will be obvious if you try this:
var b = new Obj();
var b1 = b;
print (%p %p %p %p, b, b1, b, b1);
Obvious might be a little bold :)
I get these numbers:
0xffa0c0 0xffa0c0 0x7fffbbedcfe0 0x7fffbbedcfe8
I read the first two as
On 20/11/2013 02:12, Nor Jaidi Tuah wrote:
Exactly. Told you it's obvious :-)
Ha ha! You did. Thanks for your help.
\d
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On 17/11/2013 11:14, Luca Bruno wrote:
https://developer.gnome.org/gobject/stable/gobject-The-Base-Object-Type.html#GObject-notify
In vala should be obj.notify.connect (...).
Sweet, thanks.
Small demo:
public class Stuff : Object {
public string prop1 {get;set;}
public string prop2
Hi,
In python one can print (someobject) and get a nice hash kind of
thing. Is there any equiv way of printf-ing an object in vala/gobj?
e.g. __main__.A instance at 0x1989320
At the moment I'm making a repr() method (via a static counter to
generate a unique number per new instance) and
On 17/11/2013 16:03, Luca Bruno wrote:
It's not possible to do that for every type.
Anything wrong with this approach?
public class Obj : Object {
public string foo;
}
public void main() {
var o = new Obj();
var o1 = new Obj();
var o2 = new Obj();
stdout.printf(%p\n, o); //-- gives
Hi,
Let's say I have a class that holds a bunch of properties:
public class Prop : Object {
public double x {get; set; default=0.0;}
public double y {get; set; default=0.0;}
public double r {get; set; default=0.0;}
public double g {get; set; default=0.0;}
public double b
On 08/11/2013 02:43, Daniel Espinosa wrote:
Do you know how can I change default nick?
I'm not sure - haven't had a chance to try this yet - but have a look at
this link:
http://blog.yorba.org/jim/2011/05/a-few-of-my-favorite-vala-things-enums.html
\d
On 30 October 2013 18:45, Evan Nemerson e...@coeus-group.com wrote:
Use the relevant Gdk.Event member instead:
Gdk.EventButton eb = event.button;
Ah! Super thanks.
\d
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Hi,
Apologies if this is OT. I am trying to do this in Vala.
This is a general tree walking question. I'm a bit thick and trees
really kill my brain. Here's the situation:
I have a Thing class that contains an ArrayList of (potentially)
many other Things. This all results in a tree where Things
On 28 October 2013 19:50, Andre Masella an...@masella.name wrote:
Andre, Just a quick thanks for your help.
\d
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Hello; partial code:
--
private bool handle_events(Gdk.Event event) {
if (event.type == Gdk.EventType.BUTTON_PRESS)
{
Gdk.EventButton eb = (Gdk.EventButton) event;
//Now I can use eb for e.g. eb.state or eb.x
... etc.
--
When I try to compile, I get an error. It seems to be an
On 27 October 2013 15:59, Andre Masella an...@masella.name wrote:
The increase in reference happens inside ArrayList *before* it returns the
value.
Ok, got it.
You can't assign an owned variable to an unowned variable and expect good
things to happen because there might be no other owners
On 26 October 2013 16:08, Andre Masella an...@masella.name wrote:
If you look at the generated code, after the printf method, it will free the
temporary variable created when it accessed L[0].
Ah. I see.
Is there no way to assign L[0] to some kind of weak variable so there's no inc?
I tried:
Hi,
Probably a silly question from a permanent newb. See this code:
using Gee;
int main() {
var L = new ArrayListint();
L.add(10);
L.add(20);
L.add(30);
L.insert (2, 50);
int x=0;
foreach (int i in L) {
//This line shows indexes 0,1,2,3
stdout.printf (%d and %d\n, i,
On 26 October 2013 10:47, Nor Jaidi Tuah norjaidi.t...@ubd.edu.bn wrote:
Concerning L.index_of(x):
L.index_of(0) = -1 because 0 is not in L.
L.index_of(1) = -1 because 1 is not in L.
Concerning L.index_of(i):
L.index_of(10) = 0 because L[0] is 10.
L.index_of(20) = 1
Hello again,
Another newb question about ref counts:
---
using Gee;
public class Obj : Object {
public string id;
public Obj(string id) {
this.id = id;
}
}
public void foo( Obj o) {
//It seems o here is a pointer - i.e. it has not inc the ref_count.
stdout.printf(In func foo, o
Evan, thanks for that detailed email. There's a lot to digest, so I better
get on it.
All the best,
/d
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Hello,
I'm sure this is my small brain and lack of experience, but I can't
get past this compile error. I will paste a complete sample below.
---
using Gee;
using Cairo;
// Compile with: valac --pkg gee-1.0 --pkg gtk+-3.0 -X -lm
cairopath.compile.bug.vala -o test
public abstract class Shape :
array.. A quick glance at the cairo vapi, and I think you really want this?:
Cairo.PathData[] data = path.data;
I feel disturbed by that ;) Not sure why.
The code I'm trying to Vala-ize is here:
http://cairographics.org/manual/cairo-Paths.html#cairo-path-data-t
(scroll down a wee bit to
On 22/05/2013 17:59, Mario Daniel Ruiz Saavedra wrote:
I asked that some time ago, and no, there isn't anything like that,
Yeah, I figured :) Ah well.
\d
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On 22/05/2013 18:19, Steven Oliver wrote:
Interesting idea in this case though. You want a tool to translate
(C) to a language (Vala) which in turn just translates it back to its
original language (C).
To bad the compiler doesn't have a reverse gear! Ha!
Indeed. calav -o
On 18/05/2013 16:57, Jonas Kulla wrote:
It's basically the same as declaring foreign functions in C.
Let's say you want to use the function 'int cairo_do_foo()' from Vala,
you would write something like:
namespace Cairo {
[CCode (cname=cairo_do_foo)]
extern int do_foo();
}
The
On 18/05/2013 16:46, Jonas Kulla wrote:
i.e. How do you create a class that does*not* inherit from GObject?
By not specifying a parent class, ie. just class MyKlass { ... }.
Thanks!
\d
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On 18/05/2013 12:15, Luca Bruno wrote:
You can use classes that don't inherit from GObject, which are lighter.
Are such classes the [Compact] classes, or is any class that does not
specify a parent class automatically a light class?
\d
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On 18/05/2013 13:40, Jonas Kulla wrote:
no, compact classes are even simpler than non-Gobject classes. The
latter still have reference count and can be extended, whereas
compact classes are mostly classified structs without ref count
which also cannot be extended in subclasses.
Okay, but did
On 15/05/2013 02:23, Evan Nemerson wrote:
I just pushed a bunch of changes to the vala cairo bindings. If
something is still missing, please file a bug.
Thanks Evan, however I'm not sure where these bindings can be found online.
Once fetched, would I simply drop them over my current file:
On 14/05/2013 19:59, Jonas Kulla wrote:
some vapis are auto-generated (mostly for glib based libraries I think),
but most are hand written and maintained AFAIK.
Okay, thanks. I didn't know this. I was wondering how the appropriate
cairo_destroy stuff got into my code when I never call these
On 15/05/2013 15:05, Evan Nemerson wrote:
https://git.gnome.org/browse/vala/plain/vapi/cairo.vapi
Great, thanks.
pass a --vapidir option to valac so it knows where to look for it.
I'm also using gtk, and I see a deps file that specifies 'cairo' - this
is all in /usr/share/vala/vapi
Hi,
Vapi files mystify me. Does anyone know where I can get a vapi (and
anything else I'd need) such that I can use Cairo 1.12?
Or, perhaps someone can help me generate it?
BTW - The valadoc.org/cairo seems to be about version 1.0 of cairo - so
it's also out of date.
\d
Hi,
Doing some of the samples and hit a problem with libgee.
I'm getting this error:
The root namespace already contains a definition for `Gee'
Specs:
Vala 0.18.1 on (Ubuntu 12.10)
libgee-dev 0.6.4-2
Source to reproduce is from the samples:
--
Using Gee;
void main () {
var list = new
On 26/04/2013 09:07, Donn wrote:
I'm getting this error:
The root namespace already contains a definition for `Gee'
Got it. The problem was:
Using Gee;
It should be lower-case using Gee; - Sheesh!
\d
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On 26/04/2013 19:21, Canek Peláez Valdés wrote:
It's using (lowcase u), not Using.
Thanks Canek; I also figured that out - but no thanks to that error message!
\d
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On 23/04/2013 09:46, Andres G. Aragoneses wrote:
On 23/04/13 08:15, Luca Bruno wrote:
Il 23/04/2013 00:54, Andres G. Aragoneses ha scritto:
Hello, I'm kind of a Vala newbie, can anyone tell me a quick way,
or a proper URL where to get some docs, about how to generate
.gir files from a Vala
On 20/04/2013 21:14, Evan Nemerson wrote:
.. it's generally a good idea to use
GObject-style construction [1]. In your original example, simply
replace public RedSquare() with construct and it should work as
expected.
Appreciate that, thanks. I shall read up and hack it thus.
A question?
On 21/04/2013 09:53, Evan Nemerson wrote:
When you load a shared library the memory actually used is shared not
just within the same process, but across all processes using that
library. In all likelihood, some other process (like gnome-shell) is
already using Clutter and your program using
A follow-up.
Progress
In the python file (test.py) I got the idea to explicitly call the new()
method of the RedSquare object. I saw it when I did a dir() in Python.
(I first got the idea when I saw how a Clutter.Color was instanced -
with Clutter.Color.new() - in Python, this is
On 20/04/2013 16:27, Sam Wilson wrote:
I could be mistaken, but python uses line buffering, so if you put a
'\n' on the end of your printf's you might get the text to show up right
away.
You, Sir, are a genius. Hat tip.
\d
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Hi,
(I have attached three files - hope that's ok.)
I'm trying to make library that I then employ within Python3. I am
hacking from the awesome work done here:
https://github.com/tliron/pygobject-example
(The example Logging object works very well.)
I'm trying to make a Clutter Actor (in
On 10/04/2013 19:12, Erick Pérez Castellanos wrote:
What you're missing is this:
Ah, thanks! I'll poke around now.
Although I'm not pretty sure, you should check about the preferred
way of custom painting an actor.
Speaking of this, here's a vala-related question:
On 11/04/2013 10:58, Arnel A. Borja wrote:
Vala will automatically add code to decrease its references by one
(unref) once the block where it belongs ends (in this case, the class
constructor).
Gotcha. Thanks for the help.
\d
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On 11/04/2013 15:40, Alex Stefan Kaye wrote:
def on_clicked(ev:Clutter.ButtonEvent)
This gives me the following
error: error: Argument 1: Cannot convert from `MyClass.on_click' to
`Clutter.Actor.button_press_event'
Nearest I can tell with my own Newb-o-vision ;) is that the signature of
On 09/04/2013 17:16, JM wrote:
Have you tried the clutter sample code from the vala site?
https://live.gnome.org/Vala/ClutterSamples
Hi,
Yes, I've certainly been there. The code on that page does not include a
way to sub class* a Clutter.Actor
* Make a class from. Not sure if my wording is
Greetings, hope this is the right list for getting help.
I'm fiddling with Vala and am interested in Clutter + Cairo. (I come
from Python, so this whole gObject and C world is very scary.)
Below's the short code I am trying to get working. I wanted to create an
Actor class and then add it to
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