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Diffstat (limited to 'app/DashboardGaugeStyle.qml')
| -rw-r--r-- | app/DashboardGaugeStyle.qml | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/app/DashboardGaugeStyle.qml b/app/DashboardGaugeStyle.qml new file mode 100644 index 0000000..d765a70 --- /dev/null +++ b/app/DashboardGaugeStyle.qml @@ -0,0 +1,175 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, you may use this file under the terms of the BSD license +** as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of The Qt Company Ltd nor the names of its +** contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +import QtQuick 2.2 +import QtQuick.Controls.Styles 1.4 + +CircularGaugeStyle { + tickmarkInset: toPixels(0.04) + minorTickmarkInset: tickmarkInset + labelStepSize: 20 + labelInset: toPixels(0.23) + + property real xCenter: outerRadius + property real yCenter: outerRadius + property real needleLength: outerRadius - tickmarkInset * 1.25 + property real needleTipWidth: toPixels(0.02) + property real needleBaseWidth: toPixels(0.06) + property bool halfGauge: false + + function toPixels(percentage) { + return percentage * outerRadius; + } + + function degToRad(degrees) { + return degrees * (Math.PI / 180); + } + + function radToDeg(radians) { + return radians * (180 / Math.PI); + } + + function paintBackground(ctx) { + if (halfGauge) { + ctx.beginPath(); + ctx.rect(0, 0, ctx.canvas.width, ctx.canvas.height / 2); + ctx.clip(); + } + + ctx.beginPath(); + ctx.fillStyle = "black"; + ctx.ellipse(0, 0, ctx.canvas.width, ctx.canvas.height); + ctx.fill(); + + ctx.beginPath(); + ctx.lineWidth = tickmarkInset; + ctx.strokeStyle = "black"; + ctx.arc(xCenter, yCenter, outerRadius - ctx.lineWidth / 2, outerRadius - ctx.lineWidth / 2, 0, Math.PI * 2); + ctx.stroke(); + + ctx.beginPath(); + ctx.lineWidth = tickmarkInset / 2; + ctx.strokeStyle = "#222"; + ctx.arc(xCenter, yCenter, outerRadius - ctx.lineWidth / 2, outerRadius - ctx.lineWidth / 2, 0, Math.PI * 2); + ctx.stroke(); + + ctx.beginPath(); + var gradient = ctx.createRadialGradient(xCenter, yCenter, 0, xCenter, yCenter, outerRadius * 1.5); + gradient.addColorStop(0, Qt.rgba(1, 1, 1, 0)); + gradient.addColorStop(0.7, Qt.rgba(1, 1, 1, 0.13)); + gradient.addColorStop(1, Qt.rgba(1, 1, 1, 1)); + ctx.fillStyle = gradient; + ctx.arc(xCenter, yCenter, outerRadius - tickmarkInset, outerRadius - tickmarkInset, 0, Math.PI * 2); + ctx.fill(); + } + + background: Canvas { + onPaint: { + var ctx = getContext("2d"); + ctx.reset(); + paintBackground(ctx); + } + + Text { + id: speedText + font.pixelSize: toPixels(0.3) + text: kphInt + color: "white" + horizontalAlignment: Text.AlignRight + anchors.horizontalCenter: parent.horizontalCenter + anchors.top: parent.verticalCenter + anchors.topMargin: toPixels(0.1) + + readonly property int kphInt: control.value + } + Text { + text: "km/h" + color: "white" + font.pixelSize: toPixels(0.09) + anchors.top: speedText.bottom + anchors.horizontalCenter: parent.horizontalCenter + } + } + + needle: Canvas { + implicitWidth: needleBaseWidth + implicitHeight: needleLength + + property real xCenter: width / 2 + property real yCenter: height / 2 + + onPaint: { + var ctx = getContext("2d"); + ctx.reset(); + + ctx.beginPath(); + ctx.moveTo(xCenter, height); + ctx.lineTo(xCenter - needleBaseWidth / 2, height - needleBaseWidth / 2); + ctx.lineTo(xCenter - needleTipWidth / 2, 0); + ctx.lineTo(xCenter, yCenter - needleLength); + ctx.lineTo(xCenter, 0); + ctx.closePath(); + ctx.fillStyle = Qt.rgba(0.66, 0, 0, 0.66); + ctx.fill(); + + ctx.beginPath(); + ctx.moveTo(xCenter, height) + ctx.lineTo(width, height - needleBaseWidth / 2); + ctx.lineTo(xCenter + needleTipWidth / 2, 0); + ctx.lineTo(xCenter, 0); + ctx.closePath(); + ctx.fillStyle = Qt.lighter(Qt.rgba(0.66, 0, 0, 0.66)); + ctx.fill(); + } + } + + foreground: null +} |