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Qt QML 6.2.1. How to identify the direction of the dragging event in MouseArea?
CuriousPan last edited by CuriousPan
I'm using MouseArea and I'd like to identify whether user drags the mouse to the right or to the left. There's a signal
positionChanged(MouseEvent mouse), but it neither provides information about the direction nor about the previous and current coordinates. Do you have any advices? Thank you in advance.
CuriousPan last edited by
I found a solutions by myself. The only thing you need to do is to introduce a variable which stores a previous position of the cursor. Then you compare it with the current mouse X position each time mouse is moved (
onPositionChanged()). If mouse X position is bigger, then this is a right move gesture. If mouse X position is smaller, then this is a left move gesture.
Note: exclude 0 as it leads to undesired behaviour.
Don't forget to update the variable storing the last cursor's position. From my experiece the difference would always be 1, 0 or -1 (we handled 0 case), because the signal is emitted each time the mouse moves (even on a signle pixel).