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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick
import QtQuick.Controls
import "../"
Item {
id: root
width: 320
height: 480
Column {
spacing: 5
anchors {
fill: parent
topMargin: 12
}
Label {
anchors.horizontalCenter: parent.horizontalCenter
text: qsTr("Bezier Curve")
color: Qt.lighter(palette.text)
font {
pointSize: 24
bold: true
}
}
Canvas {
id: canvas
readonly property color strokeStyle: Qt.darker(fillStyle, 1.4)
readonly property color fillStyle: "#b40000" // red
readonly property alias lineWidth: lineWidthCtrl.value
readonly property alias fill: toggleFillCheckBox.checked
readonly property alias stroke: toggleStrokeCheckBox.checked
readonly property real alpha: 1.0
readonly property alias scale: scaleCtrl.value
readonly property alias rotate: rotateCtrl.value
width: root.width
height: parent.height - controls.height
antialiasing: true
onLineWidthChanged: requestPaint()
onFillChanged: requestPaint()
onStrokeChanged: requestPaint()
onScaleChanged: requestPaint()
onRotateChanged: requestPaint()
onPaint: function() {
let ctx = canvas.getContext('2d')
const originX = 85
const originY = 75
ctx.save()
ctx.clearRect(0, 0, canvas.width, canvas.height)
ctx.translate(originX, originX)
ctx.globalAlpha = canvas.alpha
ctx.strokeStyle = canvas.strokeStyle
ctx.fillStyle = canvas.fillStyle
ctx.lineWidth = canvas.lineWidth
ctx.translate(originX, originY)
ctx.scale(canvas.scale, canvas.scale)
ctx.rotate(canvas.rotate)
ctx.translate(-originX, -originY)
//! [0]
ctx.beginPath()
ctx.moveTo(75,40)
ctx.bezierCurveTo(75,37,70,25,50,25)
ctx.bezierCurveTo(20,25,20,62.5,20,62.5)
ctx.bezierCurveTo(20,80,40,102,75,120)
ctx.bezierCurveTo(110,102,130,80,130,62.5)
ctx.bezierCurveTo(130,62.5,130,25,100,25)
ctx.bezierCurveTo(85,25,75,37,75,40)
ctx.closePath()
//! [0]
if (canvas.fill)
ctx.fill()
if (canvas.stroke)
ctx.stroke()
ctx.restore()
}
}
}
Column {
id: controls
anchors {
bottom: parent.bottom
bottomMargin: 12
}
LabeledSlider {
id: lineWidthCtrl
name: qsTr("Outline")
min: 1
max: 10
value: 2
width: root.width
}
LabeledSlider {
id: scaleCtrl
name: qsTr("Scale")
min: 0.1
max: 10
value: 1
width: root.width
}
LabeledSlider {
id: rotateCtrl
name: qsTr("Rotate")
min: 0
max: Math.PI * 2
value: 0
width: root.width
}
Row {
CheckBox {
id: toggleFillCheckBox
checked: true
text: qsTr("Toggle fill")
}
CheckBox {
id: toggleStrokeCheckBox
checked: true
text: qsTr("Toggle stroke")
}
}
}
}
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