99 lines
3.5 KiB
C++
99 lines
3.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 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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#include "visualtestutil.h"
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#include <QtQuick/QQuickItem>
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#include <QtCore/QDebug>
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bool QQuickVisualTestUtil::delegateVisible(QQuickItem *item)
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{
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return item->isVisible() && !QQuickItemPrivate::get(item)->culled;
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}
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QQuickItem *QQuickVisualTestUtil::findVisibleChild(QQuickItem *parent, const QString &objectName)
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{
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QQuickItem *item = 0;
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QList<QQuickItem*> items = parent->findChildren<QQuickItem*>(objectName);
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for (int i = 0; i < items.count(); ++i) {
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if (items.at(i)->isVisible() && !QQuickItemPrivate::get(items.at(i))->culled) {
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item = items.at(i);
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break;
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}
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}
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return item;
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}
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void QQuickVisualTestUtil::dumpTree(QQuickItem *parent, int depth)
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{
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static QString padding(" ");
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for (int i = 0; i < parent->childItems().count(); ++i) {
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QQuickItem *item = qobject_cast<QQuickItem*>(parent->childItems().at(i));
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if (!item)
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continue;
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qDebug() << padding.left(depth*2) << item;
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dumpTree(item, depth+1);
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}
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}
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// A custom compare function to avoid issues such as:
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// When running on native Nvidia graphics cards on linux, the
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// distance field glyph pixels have a measurable, but not visible
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// pixel error. This was GT-216 with the ubuntu "nvidia-319" driver package.
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// llvmpipe does not show the same issue.
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bool QQuickVisualTestUtil::compareImages(const QImage &ia, const QImage &ib)
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{
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if (ia.size() != ib.size())
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qDebug() << "images are of different size" << ia.size() << ib.size();
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Q_ASSERT(ia.size() == ib.size());
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Q_ASSERT(ia.format() == ib.format());
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int w = ia.width();
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int h = ia.height();
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const int tolerance = 5;
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for (int y=0; y<h; ++y) {
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const uint *as= (const uint *) ia.constScanLine(y);
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const uint *bs= (const uint *) ib.constScanLine(y);
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for (int x=0; x<w; ++x) {
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uint a = as[x];
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uint b = bs[x];
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// No tolerance for error in the alpha.
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if ((a & 0xff000000) != (b & 0xff000000))
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return false;
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if (qAbs(qRed(a) - qRed(b)) > tolerance)
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return false;
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if (qAbs(qRed(a) - qRed(b)) > tolerance)
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return false;
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if (qAbs(qRed(a) - qRed(b)) > tolerance)
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return false;
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}
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}
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return true;
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}
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