roundedrect.qml Example File | Qt Quick 5.12.12

- Qt 5.12
- Qt Quick
- Qt Quick Examples - Canvas
- roundedrect.qml Example File
- Qt 5.12.12 Reference Documentation

# roundedrect.qml Example File

canvas/roundedrect/roundedrect.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: "Rounded rectangle"
                 anchors.horizontalCenter: parent.horizontalCenter
                 color: "#777"
             }
             Canvas {
                 id: canvas
                 width: 320
                 height: 280
                 antialiasing: true

                 property int radius: rCtrl.value
                 property int rectx: 60
                 property int recty: 60
                 property int rectWidth: width - 2*rectx
                 property int rectHeight: height - 2*recty
                 property color strokeStyle:  Qt.darker(fillStyle, 1.4)
                 property color fillStyle: "#ae32a0" // purple
                 property int lineWidth: lineWidthCtrl.value
                 property bool fill: true
                 property bool stroke: true
                 property real alpha: 1.0

                 onLineWidthChanged:requestPaint();
                 onFillChanged:requestPaint();
                 onStrokeChanged:requestPaint();
                 onRadiusChanged:requestPaint();

                 onPaint: {
                     var ctx = getContext("2d");
                     ctx.save();
                     ctx.clearRect(0,0,canvas.width, canvas.height);
                     ctx.strokeStyle = canvas.strokeStyle;
                     ctx.lineWidth = canvas.lineWidth
                     ctx.fillStyle = canvas.fillStyle
                     ctx.globalAlpha = canvas.alpha
                     ctx.beginPath();
                     ctx.moveTo(rectx+radius,recty);                 // top side
                     ctx.lineTo(rectx+rectWidth-radius,recty);
                     // draw top right corner
                     ctx.arcTo(rectx+rectWidth,recty,rectx+rectWidth,recty+radius,radius);
                     ctx.lineTo(rectx+rectWidth,recty+rectHeight-radius);    // right side
                     // draw bottom right corner
                     ctx.arcTo(rectx+rectWidth,recty+rectHeight,rectx+rectWidth-radius,recty+rectHeight,radius);
                     ctx.lineTo(rectx+radius,recty+rectHeight);              // bottom side
                     // draw bottom left corner
                     ctx.arcTo(rectx,recty+rectHeight,rectx,recty+rectHeight-radius,radius);
                     ctx.lineTo(rectx,recty+radius);                 // left side
                     // draw top left corner
                     ctx.arcTo(rectx,recty,rectx+radius,recty,radius);
                     ctx.closePath();
                     if (canvas.fill)
                         ctx.fill();
                     if (canvas.stroke)
                         ctx.stroke();
                     ctx.restore();
                 }
             }
         }
         Column {
             anchors.bottom: parent.bottom
             anchors.bottomMargin: 12
             Slider {id: lineWidthCtrl ; min: 1 ; max: 10; init: 2 ; name: "Outline"}
             Slider {id: rCtrl ; min: 10 ; max: 80 ; init: 40 ; name: "Radius"}
         }
     }