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List: kde-panel-devel
Subject: Re: Is it possible to know when a PlasmaCore IconItem is ready?
From: David Edmundson <david () davidedmundson ! co ! uk>
Date: 2016-07-29 15:41:16
Message-ID: CAGeFrHDBaDXvzvhGLJHUYoQo-s=LumWXUn6sjwnD7-mWXaSvNA () mail ! gmail ! com
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Given you already have
usePlasmaTheme:false
does using QIconItem from KQuickControlsAddons work any better?
David
On Fri, Jul 29, 2016 at 4:35 PM, Michail Vourlakos <mvourlakos@gmail.com>
wrote:
> >
> > Move the IconItem outside the DropShadow.
> > Otherwise you're scaling the source still, which is what we want to
> avoid.
> >
> > Out of curiosity, how are you measuring performance?
> >
>
> David even this way I get the same bad performance... This is the code
> inside a task delegate. I have implemented a qml plasmoid that acts as
> an alternative task list but it mimics the plank animation or mac
> style. The main animation in this case is when the user hovers a task
> and that task is zoomed and its neighbour tasks also. Most of the code
> is based on the current tasks plasmoid of 5.7 except the appearance
> and the animations.
>
> To check the performance I install the plasmoid with "plasmapkg2 -u "
> and after that I use plasmawindowed to watch it. After that I open
> ksysguard and I watch the cpu% that is used when then user hovers the
> tasks and goes its mouse on the task list back and forth. With the
> following code my sluggish old netbook reaches and remain at around
> 80% of cpu cycles when the user hovers tasks in that list, and
> actually there is no smooth animation at all. With the Images solution
> I sent earlier this is at 40% cpu in the same hardware and there is a
> smooth hovering animation.
>
> In my main computer at the office with the following solution I get
> around 25% of cpu with smooth animation but with the Images solution I
> get maximum 9% of cpu
>
>
> -----------------------------------
> PlasmaCore.IconItem {
> id: iconImage
>
> width:64
> height:64
>
> anchors.centerIn: parent
>
> active: true
> enabled: true
> usesPlasmaTheme: false
>
> source: decoration
>
> }
>
> DropShadow {
> id:shadowImageNoActive
>
> width: 64
> height: 64
>
> scale: wrapper.scale * wrapper.appearScale
>
> anchors.centerIn: parent
>
> radius: 7.0
> samples: 10
> color: "#90080808"
> source: ShaderEffectSource {
> id:effectSource
> width: iconImage.width
> height: iconImage.height
> sourceItem: iconImage
> hideSource: true
> live: false
> }
>
> }
> _______________________________________________
> Plasma-devel mailing list
> Plasma-devel@kde.org
> https://mail.kde.org/mailman/listinfo/plasma-devel
>
[Attachment #5 (text/html)]
<div dir="ltr"><div><div><div>Given you already \
have<br><br></div>usePlasmaTheme:false <br><br></div>does using QIconItem from \
KQuickControlsAddons work any \
better?<br><br></div>David<br><div><div><div><div><div><div \
class="gmail_extra"><br><div class="gmail_quote">On Fri, Jul 29, 2016 at 4:35 PM, \
Michail Vourlakos <span dir="ltr"><<a href="mailto:mvourlakos@gmail.com" \
target="_blank">mvourlakos@gmail.com</a>></span> wrote:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"><span class="">><br> > Move the IconItem outside the \
DropShadow.<br> > Otherwise you're scaling the source still, which is what we \
want to avoid.<br> ><br>
> Out of curiosity, how are you measuring performance?<br>
><br>
<br>
</span>David even this way I get the same bad performance... This is the code<br>
inside a task delegate. I have implemented a qml plasmoid that acts as<br>
an alternative task list but it mimics the plank animation or mac<br>
style. The main animation in this case is when the user hovers a task<br>
and that task is zoomed and its neighbour tasks also. Most of the code<br>
is based on the current tasks plasmoid of 5.7 except the appearance<br>
and the animations.<br>
<br>
To check the performance I install the plasmoid with "plasmapkg2 -u "<br>
and after that I use plasmawindowed to watch it. After that I open<br>
ksysguard and I watch the cpu% that is used when then user hovers the<br>
tasks and goes its mouse on the task list back and forth. With the<br>
following code my sluggish old netbook reaches and remain at around<br>
80% of cpu cycles when the user hovers tasks in that list, and<br>
actually there is no smooth animation at all. With the Images solution<br>
I sent earlier this is at 40% cpu in the same hardware and there is a<br>
smooth hovering animation.<br>
<br>
In my main computer at the office with the following solution I get<br>
around 25% of cpu with smooth animation but with the Images solution I<br>
get maximum 9% of cpu<br>
<br>
<br>
-----------------------------------<br>
<div class="HOEnZb"><div class="h5"> PlasmaCore.IconItem {<br>
id: iconImage<br>
<br>
width:64<br>
height:64<br>
<br>
anchors.centerIn: parent<br>
<br>
active: true<br>
enabled: true<br>
usesPlasmaTheme: false<br>
<br>
source: decoration<br>
<br>
}<br>
<br>
DropShadow {<br>
id:shadowImageNoActive<br>
<br>
width: 64<br>
height: 64<br>
<br>
scale: wrapper.scale * wrapper.appearScale<br>
<br>
anchors.centerIn: parent<br>
<br>
radius: 7.0<br>
samples: 10<br>
color: "#90080808"<br>
source: ShaderEffectSource {<br>
id:effectSource<br>
width: iconImage.width<br>
height: iconImage.height<br>
sourceItem: iconImage<br>
hideSource: true<br>
live: false<br>
}<br>
<br>
}<br>
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</div></div></blockquote></div><br></div></div></div></div></div></div></div>
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