[Cuis-dev] Slow keyboard input

[Luciano Notarfrancesco]

Fantastic, this solved most of the problems, thank you! I’m using
HybridCanvas for now and it feels very smooth.

Part of the problem was that my window manager was stepping every 1 second
to make sure that windows were properly layedout (to account for when the
Cuis window changes size, for example). This was a bug, and was causing
everything to be redrawn every second, but it was not slow enough to be
noticeable until I tried it with full vector graphics. Now I fixed it to
avoid unnecessary redraws.

I still think there might be a bug somewhere. The fact that a browser with
halo feels slower than a browser with no halo is kind of weird. Also text
input shouldn’t feel much slower with vector graphics, I suspect something
is being unnecessarily redrawn on every keystroke.

On Fri, 28 Jan 2022 at 9:55 PM Juan Vuletich <JuanVuletich at zoho.com> wrote:

> On 1/28/2022 8:39 AM, Luciano Notarfrancesco via Cuis-dev wrote:
>
> This is very weird, I’m having lots of problems. I tried the new VM with
> the old image and seems to work fine. Perhaps the VectorEngine plugin is
> outdated? Now with just a few windows open (3 browsers, one workspace, one
> message set) everything becomes super slow and it takes over one second to
> react to clicks. Also, when I left-click a method in the method list of a
> browser sometimes it selects the method and sometimes it opens the menu (as
> if I had right-clicked)… super weird, any clue?
>
> On Fri, 28 Jan 2022 at 4:29 PM Luciano Notarfrancesco <luchiano at gmail.com>
> wrote:
>
>> Yes, that’s the one I’m using with the “fast” image. But it doesnt work
>> with the new image because it doesn’t have the VectorGraphics plugin.
>>
>> On Fri, 28 Jan 2022 at 4:05 PM Nicola Mingotti <nmingotti at gmail.com>
>> wrote:
>>
>>>
>>> hi Luciano,
>>>
>>> I didn't notice it, it may be just the vm.
>>>
>>> some months ago we agreed to run on this VM by default:
>>>
>>> wget -O cogspur.tgz https://github.com/OpenSmalltalk/opensmalltalk-vm/releases/download/202003021730/squeak.cog.spur_linux64x64_202003021730.tar.gz
>>>
>>>
>>> See, here
>>>
>>> https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev/blob/master/Documentation/GettingStarted.md
>>>
>>> bye
>>>
>>> Nicola
>>>
>>>
>>>
>>>
>>> On 1/28/22 09:56, Luciano Notarfrancesco via Cuis-dev wrote:
>>>
>>> The newest Cuis image feels much slower compared with my 1 year old
>>> image. Typing a single character in an empty workspace there’s a noticeable
>>> lag (like 200 ms, maybe). This is in a new and fast laptop. Anyone
>>> experienced anything like this? I don’t think the problem is
>>> VectorGraphics, because typing a single character shouldn’t take any
>>> noticeable time even without the plugin, and I think the glyph is cached
>>> anyway right? Maybe the problem is the VM? I’m using
>>>
>>> https://github.com/OpenSmalltalk/opensmalltalk-vm/releases/download/202112201228/squeak.cog.spur_linux64x64.tar.gz
>>>
>>>
>>>
> Hi Luciano,
>
> This may be due to using VectorCanvas for all drawing. Try evaluating
> `MorphicCanvas activeSubclass: HybridCanvas.` to use BitBlt for
> unzoomed/unrotated windows, with full VG capabilities, or `MorphicCanvas
> activeSubclass: BitBltCanvas.` to completely disable VG (while keeping TTF
> working).
>
> Please tell how it goes.
>
> Thanks,
>
> --
> Juan Vuletichwww.cuis-smalltalk.orghttps://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Devhttps://github.com/jvuletichhttps://www.linkedin.com/in/juan-vuletich-75611b3https://independent.academia.edu/JuanVuletichhttps://www.researchgate.net/profile/Juan-Vuletichhttps://patents.justia.com/inventor/juan-manuel-vuletich
> @JuanVuletich
>
>
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