bezierCurve.qml Example File
canvas/bezierCurve/bezierCurve.qml
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: "Bezier Curve"
anchors.horizontalCenter: parent.horizontalCenter
color: "#777"
}
Canvas {
id:canvas
width:320
height:280
property color strokeStyle: Qt.darker(fillStyle, 1.4)
property color fillStyle: "#b40000"
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 = 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(75,40);
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();
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"}
}
}