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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QTest>
#include <QPainter>
#include <private/qtextimagehandler_p.h>
using namespace Qt::StringLiterals;
// #define DEBUG_WRITE_HTML
class tst_QTextImageHandler : public QObject
{
Q_OBJECT
public:
tst_QTextImageHandler();
private slots:
void init();
void cleanup();
void cleanupTestCase();
void loadAtNImages_data();
#ifndef QT_NO_TEXTHTMLPARSER
void loadAtNImages();
void maxWidth_data();
void maxWidth();
#endif
};
tst_QTextImageHandler::tst_QTextImageHandler()
{
}
void tst_QTextImageHandler::init()
{
}
void tst_QTextImageHandler::cleanup()
{
}
void tst_QTextImageHandler::cleanupTestCase()
{
}
void tst_QTextImageHandler::loadAtNImages_data()
{
QTest::addColumn<QString>("imageFile");
QTest::addRow("file") << QFINDTESTDATA("data/image.png");
QTest::addRow("file_url") << QUrl::fromLocalFile(QFINDTESTDATA("data/image.png")).toString();
QTest::addRow("resource") << ":/data/image.png";
QTest::addRow("qrc_url") << "qrc:/data/image.png";
}
#ifndef QT_NO_TEXTHTMLPARSER
void tst_QTextImageHandler::loadAtNImages()
{
QFETCH(QString, imageFile);
QTextDocument doc;
QTextCursor c(&doc);
c.insertHtml("<img src=\"" + imageFile + "\">");
const auto formats = doc.allFormats();
const auto it = std::find_if(formats.begin(), formats.end(), [](const auto &format){
return format.objectType() == QTextFormat::ImageObject;
});
QCOMPARE_NE(it, formats.end());
const QTextImageFormat format = (*it).toImageFormat();
QTextImageHandler handler;
for (const auto &dpr : {1, 2}) {
QImage img(20, 20, QImage::Format_ARGB32_Premultiplied);
img.fill(Qt::white);
img.setDevicePixelRatio(dpr);
QPainter p(&img);
handler.drawObject(&p, QRect(0, 0, 20, 20), &doc, 0, format);
p.end();
QVERIFY(!img.isNull());
const auto expectedColor = dpr == 1 ? Qt::red : Qt::green;
QCOMPARE(img.pixelColor(0, 0), expectedColor);
}
}
void tst_QTextImageHandler::maxWidth_data()
{
QTest::addColumn<QString>("imageFile");
QTest::addColumn<QSizeF>("pageSize");
QTest::addColumn<QTextLength>("maxWidth");
QTest::addColumn<QSizeF>("expectedSize");
QTest::addRow("constrained-percentage") << QFINDTESTDATA("data/image.png") << QSizeF(16, 16) << QTextLength(QTextLength::PercentageLength, 100) << QSizeF(12, 12);
QTest::addRow("not-constrained-percentage") << QFINDTESTDATA("data/image.png") << QSizeF(200, 200) << QTextLength(QTextLength::PercentageLength, 100) << QSizeF(16, 16);
QTest::addRow("constrained-fixed") << QFINDTESTDATA("data/image.png") << QSizeF(16, 16) << QTextLength(QTextLength::FixedLength, 5) << QSizeF(5, 5);
QTest::addRow("not-constrained-fixed") << QFINDTESTDATA("data/image.png") << QSizeF(200, 200) << QTextLength(QTextLength::FixedLength, 5) << QSizeF(5, 5);
QTest::addRow("not-constrained-default") << QFINDTESTDATA("data/image.png") << QSizeF(200, 200) << QTextLength(QTextLength::VariableLength, 5) << QSizeF(16, 16);
}
void tst_QTextImageHandler::maxWidth()
{
QFETCH(QString, imageFile);
QFETCH(QSizeF, pageSize);
QFETCH(QTextLength, maxWidth);
QFETCH(QSizeF, expectedSize);
QTextDocument doc;
doc.setPageSize(pageSize);
doc.setDocumentMargin(2);
QTextCursor c(&doc);
QString style;
if (maxWidth.type() == QTextLength::PercentageLength)
style = " style=\"max-width:"_L1 + QString::number(maxWidth.rawValue()) + "%;\""_L1;
else if (maxWidth.type() == QTextLength::FixedLength)
style = " style=\"max-width:"_L1 + QString::number(maxWidth.rawValue()) + "px;\""_L1;
const QString html = "<img src=\"" + imageFile + u'\"' + style + "\">";
c.insertHtml(html);
#ifdef DEBUG_WRITE_HTML
{
QFile out("/tmp/" + QLatin1String(QTest::currentDataTag()) + ".html");
out.open(QFile::WriteOnly);
out.write(html.toLatin1());
out.close();
}
{
QFile out("/tmp/" + QLatin1String(QTest::currentDataTag()) + "_rewrite.html");
out.open(QFile::WriteOnly);
out.write(doc.toHtml().toLatin1());
out.close();
}
#endif
const auto formats = doc.allFormats();
const auto it = std::find_if(formats.begin(), formats.end(), [](const auto &format){
return format.objectType() == QTextFormat::ImageObject;
});
QCOMPARE_NE(it, formats.end());
const QTextImageFormat format = (*it).toImageFormat();
QTextImageHandler handler;
QCOMPARE(handler.intrinsicSize(&doc, 0, format), expectedSize);
}
#endif
QTEST_MAIN(tst_QTextImageHandler)
#include "tst_qtextimagehandler.moc"
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