87 lines
2.5 KiB
QML
87 lines
2.5 KiB
QML
/****************************************************************************
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**
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** Copyright (C) 2019 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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import QtQuick 2.4
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import QtTest 1.1
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Item {
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id: root
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width: 500
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height: 500
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Timer {
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id: timer
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interval: 1
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running: true
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repeat: true
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onTriggered: {
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if (myCanvas.parent == root) {
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myCanvas.parent = null
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} else {
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myCanvas.parent = root
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}
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}
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}
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Canvas {
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id: myCanvas
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anchors.fill: parent
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property var paintContext: null
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function paint() {
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paintContext.fillStyle = Qt.rgba(1, 0, 0, 1);
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paintContext.fillRect(0, 0, width, height);
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requestAnimationFrame(paint);
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}
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onAvailableChanged: {
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if (available) {
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paintContext = getContext("2d")
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requestAnimationFrame(paint);
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}
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}
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}
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TestCase {
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name: "invalidContext"
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when: myCanvas.parent === null && myCanvas.paintContext !== null
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function test_paintContextInvalid() {
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verify(myCanvas.paintContext);
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var caught = false;
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try {
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console.log(myCanvas.paintContext.fillStyle);
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} catch(e) {
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caught = true;
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}
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verify(caught);
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timer.running = false
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}
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}
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}
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