quadraticCurveTo.qml Example File

canvas/quadraticCurveTo/quadraticCurveTo.qml
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import QtQuick 2.0 import "../contents" import "../../shared" Item { id:container width:320 height:480 Column { spacing:5 anchors.fill: parent anchors.topMargin: 12 Text { font.pointSize: 24 font.bold: true text: "Quadratic Curve" anchors.horizontalCenter: parent.horizontalCenter color: "#777" } Canvas { id: canvas width: 320 height: 280 property color strokeStyle: Qt.darker(fillStyle, 1.3) property color fillStyle: "#14aaff" // blue property int lineWidth: lineWidthCtrl.value property bool fill: true property bool stroke: true property real alpha: 1.0 property real scale : scaleCtrl.value property real rotate : rotateCtrl.value antialiasing: true onLineWidthChanged:requestPaint(); onFillChanged:requestPaint(); onStrokeChanged:requestPaint(); onScaleChanged:requestPaint(); onRotateChanged:requestPaint(); onPaint: { var ctx = canvas.getContext('2d'); var originX = 75 var originY = 75 ctx.save(); ctx.clearRect(0, 0, canvas.width, canvas.height); ctx.translate(originX, originX); ctx.strokeStyle = canvas.strokeStyle; ctx.fillStyle = canvas.fillStyle; ctx.lineWidth = canvas.lineWidth; ctx.translate(originX, originY) ctx.rotate(canvas.rotate); ctx.scale(canvas.scale, canvas.scale); ctx.translate(-originX, -originY) // ![0] ctx.beginPath(); ctx.moveTo(75,25); ctx.quadraticCurveTo(25,25,25,62.5); ctx.quadraticCurveTo(25,100,50,100); ctx.quadraticCurveTo(50,120,30,125); ctx.quadraticCurveTo(60,120,65,100); ctx.quadraticCurveTo(125,100,125,62.5); ctx.quadraticCurveTo(125,25,75,25); ctx.closePath(); // ![0] if (canvas.fill) ctx.fill(); if (canvas.stroke) ctx.stroke(); // ![1] ctx.fillStyle = "white"; ctx.font = "bold 17px sans-serif"; ctx.fillText("Qt Quick", 40, 70); // ![1] ctx.restore(); } } } Column { anchors.bottom: parent.bottom anchors.bottomMargin: 12 Slider {id:lineWidthCtrl; min:1; max:10; init:2; name:"Outline"} Slider {id:scaleCtrl; min:0.1; max:10; init:1; name:"Scale"} Slider {id:rotateCtrl; min:0; max:Math.PI*2; init:0; name:"Rotate"} } }