Cura/resources/qml/Widgets/SingleSettingSlider.qml

// Copyright (c) 2022 UltiMaker
// Cura is released under the terms of the LGPLv3 or higher.

import QtQuick 2.7
import QtQuick.Controls 2.15

import UM 1.7 as UM
import Cura 1.7 as Cura

// This silder allows changing of a single setting. Only the setting name has to be passed in to "settingName".
// All of the setting updating logic is handled by this component.
// This component allows you to choose values between minValue -> maxValue and rounds them to the nearest 10.
// If the setting is limited to a single extruder or is settable with different values per extruder use "updateAllExtruders: true"
UM.Slider
{
    id: settingSlider

    property alias settingName: propertyProvider.key

    // If true, all extruders will have "settingName" property updated.
    // The displayed value will be read from the extruder with index "defaultExtruderIndex" instead of the machine.
    property bool updateAllExtruders: false
    // This is only used if updateAllExtruders == true
    property int defaultExtruderIndex: Cura.ExtruderManager.activeExtruderIndex
    property int previousValue: -1

    // set range from 0 to 100
    from: 0; to: 100
    // set stepSize to 10 and set snapMode to snap on release snapMode is needed
    // otherwise the used percentage and slider handle show different values
    stepSize: 10; snapMode: Slider.SnapOnRelease

    UM.SettingPropertyProvider
    {
        id: propertyProvider
        containerStackId: updateAllExtruders ? Cura.ExtruderManager.extruderIds[defaultExtruderIndex] : Cura.MachineManager.activeMachine.id
        watchedProperties: ["value", "validationState",  "resolve"]
        removeUnusedValue: false
        storeIndex: 0
    }

    // set initial value from stack
    value: parseInt(propertyProvider.properties.value)

    // When the slider is released trigger an update immediately. This forces the slider to snap to the rounded value.
    onPressedChanged: function(pressed)
    {
        if(!pressed)
        {
            updateSetting(settingSlider.value);
        }
    }

    Connections
    {
        target: propertyProvider
        function onContainerStackChanged()
        {
            updateTimer.restart()
        }
        function onIsValueUsedChanged()
        {
            updateTimer.restart()
        }
    }

    // Updates to the setting are delayed by interval. This reduces lag by waiting a bit after a setting change to update the slider contents.
    Timer
    {
        id: updateTimer
        interval: 100
        repeat: false
        onTriggered: parseValueUpdateSetting(false)
    }

    function updateSlider(value)
    {
        settingSlider.value = value
    }

    function parseValueUpdateSetting(triggerUpdate)
    {
        // Only run when the setting value is updated by something other than the slider.
        // This sets the slider value based on the setting value, it does not update the setting value.

        if (parseInt(propertyProvider.properties.value) == settingSlider.value)
        {
            return
        }

        settingSlider.value = propertyProvider.properties.value
    }

    // Override this function to update a setting differently
    function updateSetting(value)
    {
        if (updateAllExtruders)
        {
            Cura.MachineManager.setSettingForAllExtruders(propertyProvider.key, "value", value)
        }
        else
        {
            propertyProvider.setPropertyValue("value", value)
        }
    }
}