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47 lines
1.2 KiB
QML
47 lines
1.2 KiB
QML
/*
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SPDX-FileCopyrightText: 2019 Michail Vourlakos <mvourlakos@gmail.com>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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import QtQuick 2.1
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MouseArea{
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id: __scrollArea
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property bool wheelIsBlocked: false
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property bool delayIsEnabled: true
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property int delay: 75
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signal scrolledUp(QtObject wheel);
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signal scrolledDown(QtObject wheel);
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onWheel: {
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if (delayIsEnabled && wheelIsBlocked){
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return;
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} else {
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wheelIsBlocked = true;
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__scrollDelayer.start();
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}
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var angle = wheel.angleDelta.y / 8;
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if (angle > 12) {
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//positive direction
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__scrollArea.scrolledUp(wheel);
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} else if (angle < -12) {
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//negative direction
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__scrollArea.scrolledDown(wheel);
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}
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}
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//! A timer is needed in order to handle also touchpads that probably
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//! send too many signals very fast. This way the signals per sec are limited.
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//! The user needs to have a steady normal scroll in order to not
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//! notice a annoying delay
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Timer{
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id: __scrollDelayer
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interval: __scrollArea.delay
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onTriggered: __scrollArea.wheelIsBlocked = false;
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}
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}
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