Re: A simple GtkSpinner is very costly in CPU cycles

["Lucky B.C" <lblackc13 gmail com>]

Well the Gtk main loop can not break out, it means you can not play
animation of the GtkSpinner as slow as you want. I'm sorry I had not used
the GtkSpinner before, then I just did a test on the widget, so I see we
only make it playing or stop animation by setting it's "active" property
TRUE or FALSE.


On Wed, Mar 21, 2018 at 2:50 PM, Kian Karas <kian karas dev gmail com>
wrote:

> Hi Lucky
>
> I don't understand what it is you suggest. Could you elaborate?
>
> Regards
>
> On Tue, Mar 20, 2018 at 3:35 PM, Lucky B.C <lblackc13 gmail com> wrote:
>
> > Hi,
> > I am not sure about playing animation of the spinner to cause the high
> > cost. But you can try to have a callback from the g_timeout_add function
> > for starting (gtk_spinner_start) and stopping (gtk_spinner_stop) the
> > animation.
> >
> > On Tue, Mar 20, 2018, 21:07 Kian Karas <kian karas dev gmail com> wrote:
> >
> > > Hi smart people
> > >
> > > I just introduced animation, in the form of a GtkSpinner, to my
> > > application
> > > for the first time. When the spinner is animating, the application takes
> > > up
> > > 45 % of the CPU resources (the application is otherwise idle at 0-2,6 %).
> > > The CPU is a single core ARM Cortex-A7 running at 528 MHz (maximum).
> > >
> > > This seems like a lot of MIPS for rotating an image of approximately
> > > 20x20
> > > px.
> > >
> > > Could it be caused by a simple misconfiguration?
> > >
> > > Any suggestions on how I can reduce the load without disabling animation
> > > completely?
> > >
> > > Is it possible to slow down the frame rate of animations some how?
> > >
> > > Thanks!
> > > Kian
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