Slow refresh rate when dragging a map with the left mouse button

freeplane / freeplane

Application for Mind Mapping, Knowledge Management, Project Management. Develop, organize and communicate your ideas and knowledge in the most effective way.

https://www.freeplane.org

GNU General Public License v2.0

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Slow refresh rate when dragging a map with the left mouse button #1893

Open krislabs opened 1 week ago

krislabs commented 1 week ago

Describe the bug At first run even a small mindmap is choppy when moved via dragging with the left mouse button. It fixes itself when for example the Preferences window is opened & closed.

To Reproduce Steps to reproduce the behavior:

Open a mindmap.
Try dragging it around with the left mouse button - movement / render refreshing is choppy.
Open & close Preferences window - problem is gone.

Expected behavior Smooth dragging / moving of a mindmap.

Mind map files It happens for a text-only map with over 150 nodes. A map with around 10 nodes doesn't have that problem.

Screenshots

Desktop

OS: Windows
Version: 11
Java Version: 15.0.10
Display: 4K 100% scaling

Additional context

Freeplane Version: 1.11.14

macmarrum commented 1 week ago

I noticed that when I disable Preferences…->Appearance->Antialias->Antialias, the scrolling and/or dragging of the map is less choppy.

krislabs commented 1 week ago

I noticed that when I disable Preferences…->Appearance->Antialias->Antialias, the scrolling and/or dragging of the map is less choppy.

In my case disabling antialiasing helped a bit but it's still choppy.

dpolivaev commented 6 days ago

It is a bit hard to observe. I have quite old Windows laptop. and I do not see any significant difference before and after opening the preferences window

Timberjaw commented 1 day ago

I'm seeing a similar choppiness on Linux.

OS: EndeavourOS (6.9.7-arch1-1), KDE Plasma 6.1.1, Wayland
Java Version: 21 (also in Java 17)
Freeplane Version: 1.11.14
Display: 1440p, 100% scaling, 60hz or 144hz

Some observations:

Opening and closing preferences alone does not have an impact for me.
Disabling antialiasing helps quite a bit, but causes artifacting/holes inside node corners.
Choppiness seems strongly correlated with the pixel dimensions of the repainted area. Zooming in to fill the viewport with a single node = choppy. Zooming out to make the entire tree a postage stamp = smooth.

theelectricsoul commented 8 hours ago

@krislabs you got an example map? Because I have huge maps and they scroll just fine.