- Qt 5.5
- Qt Quick
- Qt Quick Examples - Canvas
- tiger.qml Example File
- Qt 5.5.1 Reference Documentation

# tiger.qml Example File

canvas/tiger/tiger.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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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"}
        }
    }