[Interest] simulating pinch

Christopher Probst christop.probst at gmail.com
Wed Jan 10 21:18:17 CET 2018

Thank-you Shawn, this is very helpful, I am going to try to use both
testing approaches one in QML and one in C++. And I will post here what
happens. But thanks again!

On 10 January 2018 at 15:04, Shawn Rutledge <Shawn.Rutledge at qt.io> wrote:

> On Jan 9, 2018, at 18:21, Christopher Probst <christop.probst at gmail.com>
> wrote:
> Hello,
> I am trying to use the QML test framework to simulate a pinch. The API
> which is here
> http://doc.qt.io/qt-5/qml-qttest-testcase.html
> does not provide any methods to simulate a pinch. This seems like an
> oversight.
> There is code that shows how to do this here:
> http://code.qt.io/cgit/qt/qtdeclarative.git/tree/tests/
> auto/quick/qquickpincharea/tst_qquickpincharea.cpp
> A pinch is a touch event with two touch points.  You can see how QTest::touchEvent
> is started on line 222 for example, on line 234 it moves both touch points
> simultaneously, etc.  So that’s an example of how to write a pinch test in
> C++ (which I recommend, if you can: mainly because the C++ debugger is
> nicer to use than the QML one, IMO, and tests always seem to end up needing
> debugging at some point).
> If you want to write the test in QML, see http://doc.qt.io/qt-5/qml-
> qttest-testcase.html#touchEvent-method and http://code.qt.io/cgit/qt/
> qtdeclarative.git/tree/tests/auto/qmltest/events/tst_touch.qml#n146
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