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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Quick Extras module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
import QtQuick 2.2
import QtQuick.Extras 1.4
import QtQuick.Extras.Private 1.0
QtObject {
id: circularButtonStyleHelper
property Item control
property color buttonColorUpTop: "#e3e3e3"
property color buttonColorUpBottom: "#b3b3b3"
property color buttonColorDownTop: "#d3d3d3"
property color buttonColorDownBottom: "#939393"
property color outerArcColorTop: "#9c9c9c"
property color outerArcColorBottom: Qt.rgba(0.941, 0.941, 0.941, 0.29)
property color innerArcColorTop: "#e3e3e3"
property color innerArcColorBottom: "#acacac"
property real innerArcColorBottomStop: 0.4
property color shineColor: Qt.rgba(1, 1, 1, 0.29)
property real smallestAxis: control ? Math.min(control.width, control.height) : 0
property real outerArcLineWidth: smallestAxis * 0.04
property real innerArcLineWidth: Math.max(1, outerArcLineWidth * 0.1)
property real shineArcLineWidth: Math.max(1, outerArcLineWidth * 0.1)
property real implicitWidth: Math.round(TextSingleton.implicitHeight * 8)
property real implicitHeight: Math.round(TextSingleton.implicitHeight * 8)
property color textColorUp: "#4e4e4e"
property color textColorDown: "#303030"
property color textRaisedColorUp: "#ffffff"
property color textRaisedColorDown: "#e3e3e3"
property real radius: (smallestAxis * 0.5) - outerArcLineWidth - innerArcLineWidth
property real halfRadius: radius / 2
property real outerArcRadius: innerArcRadius + outerArcLineWidth / 2
property real innerArcRadius: radius + innerArcLineWidth / 2
property real shineArcRadius: outerArcRadius + outerArcLineWidth / 2 - shineArcLineWidth / 2
property real zeroAngle: Math.PI * 0.5
property color buttonColorTop: control && control.pressed ? buttonColorDownTop : buttonColorUpTop
property color buttonColorBottom: control && control.pressed ? buttonColorDownBottom : buttonColorUpBottom
function toPixels(percentageOfSmallestAxis) {
return percentageOfSmallestAxis * smallestAxis;
}
function paintBackground(ctx) {
ctx.reset();
if (outerArcRadius < 0 || radius < 0)
return;
var xCenter = ctx.canvas.width / 2;
var yCenter = ctx.canvas.height / 2;
/* Draw outer arc */
ctx.beginPath();
ctx.lineWidth = outerArcLineWidth;
ctx.arc(xCenter, yCenter, outerArcRadius, 0, Math.PI * 2, false);
var gradient = ctx.createRadialGradient(xCenter, yCenter - halfRadius,
0, xCenter, yCenter - halfRadius, radius * 1.5);
gradient.addColorStop(0, outerArcColorTop);
gradient.addColorStop(1, outerArcColorBottom);
ctx.strokeStyle = gradient;
ctx.stroke();
/* Draw the shine along the bottom */
ctx.beginPath();
ctx.lineWidth = shineArcLineWidth;
ctx.arc(xCenter, yCenter, shineArcRadius, 0, Math.PI, false);
gradient = ctx.createLinearGradient(xCenter, yCenter + radius, xCenter, yCenter);
gradient.addColorStop(0, shineColor);
gradient.addColorStop(0.5, "rgba(255, 255, 255, 0)");
ctx.strokeStyle = gradient;
ctx.stroke();
/* Draw inner arc */
ctx.beginPath();
ctx.lineWidth = innerArcLineWidth + 1;
ctx.arc(xCenter, yCenter, innerArcRadius, 0, Math.PI * 2, false);
gradient = ctx.createLinearGradient(xCenter, yCenter - halfRadius,
xCenter, yCenter + halfRadius);
gradient.addColorStop(0, innerArcColorTop);
gradient.addColorStop(innerArcColorBottomStop, innerArcColorBottom);
ctx.strokeStyle = gradient;
ctx.stroke();
/* Draw the button's body */
ctx.beginPath();
ctx.ellipse(xCenter - radius, yCenter - radius, radius * 2, radius * 2);
gradient = ctx.createRadialGradient(xCenter, yCenter + radius * 0.85, 0,
xCenter, yCenter + radius * 0.85, radius * (0.85 * 2));
gradient.addColorStop(1, buttonColorTop);
gradient.addColorStop(0, buttonColorBottom);
ctx.fillStyle = gradient;
ctx.fill();
}
}
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