Trackpad unusable for scrolling and zooming (MacOS)

Using the trackpad to scroll through the captured data inadvertently causes zooming in and out, and vise-versa.
This is because the trackpad gesture for scrolling horizontally (two finger left or right swipe) also as a side effect triggers the gesture to zoom in and and out (two finger up or down swipe, which on MacOS trackpad is not zooming but moving up and down, zooming is accomplished using the pinch gesture).
To correct this, we'd need to add "Trackpad / Mouse" toggle, and when in Trackpad mode, the pinch gesture is used to zoom instead of the up/down gesture.
This is a very common issue in cross platform CAD programs (EasyEDA just fixed this recently, as well as Fusion 360).

Encountered the same issue, very annoying!

@hmoazed

@hmoazed
@ddavidebor
Ok,We will check this issue. Thank you!

@hmoazed

@hmoazed
@ddavidebor
We fixed this issue, you can try the new version by the way compile from code source.

This issue still exists on dev-1.3.2 288a459. Moreover, scaling by scrolling on touchpad is basically unusable since its too sensitive to operate and there is no option to adjust it.

Hi, sorry, but this took too long, we will buy from Saleae in the future

I found a hacky fix, in the file DSView/pv/view/viewport.cpp at line 1360 you have to divide the values by something like 16 or 32, like this:

double divisor_zoom = 16; // factor by which it divides
double zoom_scale = delta / 80 / divisor_zoom;

if (ABS_VAL(delta) <= 80){
    zoom_scale = delta > 0 ? 1.5 / divisor_zoom : -1.5 / divisor_zoom;
}

This should probably be made into some kind of setting that users can adjust.

Add a Scroll Speed option and remove the temporary divisor_zoom fix. …

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Trackpad unusable for scrolling and zooming (MacOS) #599

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Trackpad unusable for scrolling and zooming (MacOS) #599

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ddavidebor commented on May 6, 2023

dreamsource-tai commented on Jul 3, 2023

dreamsource-tai commented on Jul 4, 2023

m4tsuri commented on Jan 23, 2024

ddavidebor commented on Jan 30, 2024

FearlessArmada commented on Jan 1, 2025

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