Re: [LAD] C/gtk3/cairo meter widget

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To: linux-audio-dev@lists.linuxaudio.org <linux-audio-dev@...>

Subject: Re: [LAD] C/gtk3/cairo meter widget

Date: Wednesday, February 13, 2013 - 10:12 pm

On Thu, February 14, 2013 3:43 am, Patrick Shirkey wrote:

quoted text> On Tue, February 12, 2013 9:00 pm, SxDx wrote:

>> On 02/12/2013 09:56 AM, Patrick Shirkey wrote:

>>>

>>> On Tue, February 12, 2013 3:50 am, Paul Davis wrote:

>>>> On Mon, Feb 11, 2013 at 11:44 AM, Patrick Shirkey <

>>>> pshirkey@boosthardware.com> wrote:

>>>>

>>>>>

>>>>> Thanks for the tip. Will save me some braincells.

>>>>>

>>>>> Found it here:

>>>>>

>>>>>

>>>>> http://guitarix.sourcearchive.com/documentation/0.10.0-2/GtkFastMeter_8c...

>>>>>

>>>>> http://guitarix.sourcearchive.com/documentation/0.10.0-2/GtkFastMeter_8h...

>>>>>

>>>>

>>>> the code in ardour3 doesn't use pixbufs and is entirely drawn directly

>>>> with

>>>> cairo. you may or may not care.

>>>>

>>>

>>> It's a multistep process to get it all integrated. I couldn't find

>>> anything specific online for making a custom widget with gtk3 so I have

>>> copied the structure and methods from the gtkscale/gtkrange widgets.

>>>

>>> http://git.gnome.org/browse/gtk+/tree/gtk/gtkscale.c?h=gtk-3-6

>>> http://git.gnome.org/browse/gtk+/tree/gtk/gtkrange.c?h=gtk-3-6

>>>

>>> I got it to the point where it the class is building and init() is

>>> being

>>> called but I am having a problem with assigning the correct TYPE for

>>> GTK_METER and getting the draw/realize methods to fire.

>>>

>>> http://boosthardware.com/code/jamin/

>>

>> Can you provide a small main.c or something?

>> All I see in there are static init functions never called.

>>

>

> Yeah it's just the class, no wrapping.

>

> It can be called like this:

>

> GtkWidget *gtkmeter;

> GtkAdjustment *adjustment = (GtkAdjustment*) gtk_adjustment_new(0.0, -40,

> 6, 0.0, 0.0, 0.0);

>

> meter = gtk_meter_net(adjustment, GTK_METER_UP,  0. -40, 6);

>

>
Turns out there were a couple of small items that needed to be changed. I

had to disable the additional params in the call to g_object_new() in

gtk_meter_init() and fix the Type Declaration.
I have updated the files.    http://boosthardware.com/code/jamin/
At the moment I have a meter that doesn't update which shouldn't take long

to fix. However what I am aiming for is to integrate the different cairo

meters into one class.
fastmeter - ardour

vumeter - scenic

GtkMeter - jackeq
Any ideas or suggestions on how to make that work for the GtkMeter class?
--

Patrick Shirkey

Boost Hardware Ltd

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