smile.qml Example File

canvas/smile/smile.qml
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import QtQuick 2.0 import "../contents" import "../../shared" Item { id: container width: 320 height: 480 Column { spacing: 6 anchors.fill: parent anchors.topMargin: 12 Text { font.pointSize: 24 font.bold: true text: "Smile with arcs" anchors.horizontalCenter: parent.horizontalCenter color: "#777" } Canvas { id: canvas width: 320 height: parent.height - controls.height antialiasing: true property color strokeStyle: Qt.darker(fillStyle, 1.6) property color fillStyle: "#e0c31e" // yellow property int lineWidth: lineWidthCtrl.value property bool fill: true property bool stroke: true property real scale : scaleCtrl.value property real rotate : rotateCtrl.value onLineWidthChanged:requestPaint(); onFillChanged:requestPaint(); onStrokeChanged:requestPaint(); onScaleChanged:requestPaint(); onRotateChanged:requestPaint(); onPaint: { var ctx = canvas.getContext('2d'); var originX = 85 var 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) ctx.beginPath(); ctx.moveTo(75 + 50 * Math.cos(0), 75 - 50 * Math.sin(Math.PI*2)); ctx.arc(75,75,50,0,Math.PI*2,true); // Outer circle ctx.moveTo(60,60); ctx.arc(60,60,5,0,Math.PI*2,true); // Left eye ctx.moveTo(90 + 5 * Math.cos(0), 65 - 5 * Math.sin(Math.PI*2)); ctx.moveTo(90,60); ctx.arc(90,60,5,-Math.PI,Math.PI*3,false); // Right eye ctx.moveTo(75,70); ctx.arc(75,70,35,0,Math.PI,false); // Mouth (clockwise) ctx.closePath(); if (canvas.fill) ctx.fill(); if (canvas.stroke) ctx.stroke(); ctx.restore(); } } } Column { id: controls 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"} } }