[Calculator] Swipe to delete a calculation is hard

[Leo Arias]

The new ubuntu ui toolkit will remove the swipe to delete from right to left. So now the only way to delete an old calculation will be swiping from left to right.

This is hard to do, because there's a section on the left side of the calculator screen that's used to assign labels to the operations. If I start the swipe on that section nothing happens, so my first impression was that I can't delete the calculation swiping.

After playing more with the app, I found that the swipe works, but I have to start it either really close to the left edge or from 1/3 of the width of the screen.
The first option is hard to do because you might show the launcher instead. The second one is hard to discover because I'm not used to swipe things from the center.

It would be really nice if the app noticed that I am doing a swipe instead of a tap, and in that case it ignores the labels section sending the input directly to the list item in order to show the delete confirmation.

To reproduce:
1. Open the calculator
2. Enter 9 + 3 =
3. Swipe the screen to the top, in order to store the calculation.
4. Try to delete the calculation swiping from left to right.
Try starting close to the edge, not so close to the edge, and close to the center.

[PS Jenkins bot (ps-jenkins)]

Fix committed into lp:ubuntu-calculator-app at revision 282, scheduled for release in ubuntu-calculator-app, milestone 1.6

[Leo Arias (elopio)]

My branch on the calculator doesn't fix the issue. It just deals with it during the test.

[Riccardo Padovani (rpadovani)]

Hey Leo,
thanks for the report.

It's an issue with textfield and flickable that I noticed some weeks ago, and I talked about it with zsombi during the Malta Sprint.
Before QT5.x it works as we expected:
- If the textfield isn't focused, it pass the swype to the flickable under it.
- If the textfield is focused, with swype you can select some text

After QT5.x we can choose only one of two possibility: OR we ALWAYS pass the swype to the flickable OR we ALWAYS select some text.

I tried to find an hack, but until now I find nothing.

I add also ubuntu-ui-toolkit to the bug, hope they reintroduce expected behavior, but talking with zsombi seems improbable they do it.
I'll continue to look for a solution!

Also, this is the reason we disabled copy and paste from calculator: https://bugs.launchpad.net/ubuntu-calculator-app/+bug/1267821/comments/6

[Riccardo Padovani (rpadovani)]

Due https://bugs.launchpad.net/ubuntu-calculator-app/+bug/1365564 this becomes invalid, swipe is now easy to do