Missing clicks inside file dialog

[alexballas]

Describe the bug:

My app is missing clicks when inside the file dialog. At first I thought it was my idea. I tried a different mouse and started clicking fast the various predefined locations to the left (Home/Computer/Documents etc) or just select files. Not all my clicks will trigger the buttons.

Steps to reproduce:

• Open file dialog
• Client randomly (and quickly) the various buttons or files.
• You'll notice that some clicks wont go through
• Click speed seems to affect this. Keeping a delay between my mouse clicks seems to not cause any misses

Device (please complete the following information):

• OS: Ubuntu 18.04
• Go version: 1.7.1
• Fyne version: 2.1.0

I dont have the same issue with release 2.0.3

[tandem97]

Have the same problem on win 10

[alexballas]

Raised PR #2492

[andydotxyz]

Thanks for the fix @alexballas , this is now on develop for wider testing.

[andydotxyz]

Pushed a better fix. The initial one actually created a test failure that we missed (drag up should not result in click).
I realised this change was just hiding an issue that we'd not fixed, just painted over.
Now we don't trigger a drag until > 1pt move - and when it does drag no tap event is emitted.
This fixes the original issue and the test failure resulting from the first change.