tiger.qml Example File | Qt Quick 5.12.9

- Qt 5.12
- Qt Quick
- Qt Quick Examples - Canvas
- tiger.qml Example File
- Qt 5.12.9 Reference Documentation

# tiger.qml Example File

canvas/tiger/tiger.qml

     /****************************************************************************
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     ** This file is part of the examples of the Qt Toolkit.
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     import QtQuick 2.0
     import "../contents"
     import "../../shared"
     import "tiger.js" as Tiger

     Item {
         id: container
         width: 320
         height: 480

         Column {
             spacing: 6
             anchors.fill: parent
             anchors.topMargin: 12

             Text {
                 font.pointSize: 24
                 font.bold: true
                 text: "Tiger with SVG path"
                 anchors.horizontalCenter: parent.horizontalCenter
                 color: "#777"
             }

             Canvas {
                 id: canvas
                 width: 320
                 height: 280
                 antialiasing: true

                 property string strokeStyle: "steelblue"
                 property string fillStyle: "yellow"
                 property bool fill: true
                 property bool stroke: true
                 property real alpha: alphaCtrl.value
                 property real scale: scaleCtrl.value
                 property real rotate: rotateCtrl.value
                 property int frame: 0

                 onFillChanged: requestPaint();
                 onStrokeChanged: requestPaint();
                 onAlphaChanged: requestPaint();
                 onScaleChanged: requestPaint();
                 onRotateChanged: requestPaint();

                 onPaint: {
                     var ctx = canvas.getContext('2d');
                     var originX = canvas.width/2 + 30
                     var originY = canvas.height/2 + 60

                     ctx.save();
                     ctx.clearRect(0, 0, canvas.width, canvas.height);
                     ctx.globalAlpha = canvas.alpha;
                     ctx.globalCompositeOperation = "source-over";

                     ctx.translate(originX, originY)
                     ctx.scale(canvas.scale, canvas.scale);
                     ctx.rotate(canvas.rotate);
                     ctx.translate(-originX, -originY)

                     ctx.strokeStyle = Qt.rgba(.3, .3, .3,1);
                     ctx.lineWidth = 1;

                     for (var i = 0; i < Tiger.tiger.length; i++) {
                         if (Tiger.tiger[i].width != undefined)
                             ctx.lineWidth = Tiger.tiger[i].width;

                         if (Tiger.tiger[i].path != undefined)
                             ctx.path = Tiger.tiger[i].path;

                         if (Tiger.tiger[i].fill != undefined) {
                             ctx.fillStyle = Tiger.tiger[i].fill;
                             ctx.fill();
                         }

                         if (Tiger.tiger[i].stroke != undefined) {
                             ctx.strokeStyle = Tiger.tiger[i].stroke;
                             ctx.stroke();
                         }
                     }
                     ctx.restore();
                 }
             }
         }
         Column {
             id: controls
             anchors.bottom: parent.bottom
             anchors.bottomMargin: 12
             Slider {id: scaleCtrl ; min: 0.1 ; max: 1 ; init: 0.3 ; name: "Scale"}
             Slider {id: rotateCtrl ; min: 0 ; max: Math.PI*2 ; init: 0 ; name: "Rotate"}
             Slider {id: alphaCtrl ; min: 0 ; max: 1 ; init: 1 ; name: "Alpha"}
         }
     }