TachometerStyle.qml Example File

dashboard/qml/TachometerStyle.qml
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import QtQuick 2.2 import QtQuick.Controls.Styles 1.4 import QtQuick.Extras 1.4 DashboardGaugeStyle { id: tachometerStyle tickmarkStepSize: 1 labelStepSize: 1 needleLength: toPixels(0.85) needleBaseWidth: toPixels(0.08) needleTipWidth: toPixels(0.03) tickmark: Rectangle { implicitWidth: toPixels(0.03) antialiasing: true implicitHeight: toPixels(0.08) color: styleData.index === 7 || styleData.index === 8 ? Qt.rgba(0.5, 0, 0, 1) : "#c8c8c8" } minorTickmark: null tickmarkLabel: Text { font.pixelSize: Math.max(6, toPixels(0.12)) text: styleData.value color: styleData.index === 7 || styleData.index === 8 ? Qt.rgba(0.5, 0, 0, 1) : "#c8c8c8" antialiasing: true } background: Canvas { onPaint: { var ctx = getContext("2d"); ctx.reset(); paintBackground(ctx); ctx.beginPath(); ctx.lineWidth = tachometerStyle.toPixels(0.08); ctx.strokeStyle = Qt.rgba(0.5, 0, 0, 1); var warningCircumference = maximumValueAngle - minimumValueAngle * 0.1; var startAngle = maximumValueAngle - 90; ctx.arc(outerRadius, outerRadius, // Start the line in from the decorations, and account for the width of the line itself. outerRadius - tickmarkInset - ctx.lineWidth / 2, degToRad(startAngle - angleRange / 8 + angleRange * 0.015), degToRad(startAngle - angleRange * 0.015), false); ctx.stroke(); } Text { id: rpmText font.pixelSize: tachometerStyle.toPixels(0.3) text: rpmInt color: "white" horizontalAlignment: Text.AlignRight anchors.horizontalCenter: parent.horizontalCenter anchors.top: parent.verticalCenter anchors.topMargin: 20 readonly property int rpmInt: valueSource.rpm } Text { text: "x1000" color: "white" font.pixelSize: tachometerStyle.toPixels(0.1) anchors.top: parent.top anchors.topMargin: parent.height / 4 anchors.horizontalCenter: parent.horizontalCenter } Text { text: "RPM" color: "white" font.pixelSize: tachometerStyle.toPixels(0.1) anchors.top: rpmText.bottom anchors.horizontalCenter: parent.horizontalCenter } } }