qt5base-lts/tests/auto/gui/text/qstatictext/tst_qstatictext.cpp
Eskil Abrahamsen Blomfeldt 3e238113f8 Accept error margin in QGlyphRun/QStaticText test for decorations
When calculating the width of a text for drawing decorations on top,
we use the effective advance of the whole text after it has been
through the shaper.

However, in the case of QStaticText and QGlyphRun, there is shortcut:
Since we only have the glyph indexes and position of each glyph,
we use the position + advance of the right-most glyph to find the
right-most edge of the decoration. For this, however, we use the
advance of the glyph *out of context* of the rest of the string,
because the whole idea is to avoid doing the shaping of the string
with every draw call. In some rare cases, the advance of the
right-most character, in the context of the string, is different
from the advance of the standalone glyph.

Now, one way of fixing this would be to store the width of the
text in QStaticText and QGlyphRun, but since it is a very rare
artifact which is barely visible, I have opted to just work around
it in the test instead, the workaround being to force integer
metrics so that we don't get the small 0.2 pixel error.

Task-number: QTBUG-55217
Change-Id: I8d16d52f2ef27275cabb7d3865aeeaa31617ba3d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2017-02-02 15:10:41 +00:00

917 lines
26 KiB
C++

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
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#include <QtTest/QtTest>
#include <QtGui/QGuiApplication>
#include <QtGui/QPainter>
#include <QtGui/QImage>
#include <qstatictext.h>
#include <qpaintengine.h>
#ifdef QT_BUILD_INTERNAL
#include <private/qstatictext_p.h>
#endif
// #define DEBUG_SAVE_IMAGE
static inline QImage blankSquare()
{
// a "blank" square; we compare against in our testfunctions to verify
// that we have actually painted something
QPixmap pm(1000, 1000);
pm.fill(Qt::white);
return pm.toImage();
}
class tst_QStaticText: public QObject
{
Q_OBJECT
public:
tst_QStaticText() : m_whiteSquare(blankSquare()) {}
private slots:
void constructionAndDestruction();
void drawToPoint_data();
void drawToPoint();
void drawToRect_data();
void drawToRect();
void setFont();
void setTextWidth();
void prepareToCorrectData();
void prepareToWrongData();
void copyConstructor();
void translatedPainter();
void rotatedPainter();
void scaledPainter();
void projectedPainter();
#if 0
void rotatedScaledAndTranslatedPainter_data();
void rotatedScaledAndTranslatedPainter();
#endif
void transformationChanged();
void plainTextVsRichText();
void setPenPlainText_data();
void setPenPlainText();
void setPenRichText();
void richTextOverridesPen();
void drawStruckOutText();
void drawOverlinedText();
void drawUnderlinedText();
void unprintableCharacter_qtbug12614();
#ifdef QT_BUILD_INTERNAL
void underlinedColor_qtbug20159();
void textDocumentColor();
#endif
void multiLine();
private:
bool supportsTransformations() const;
const QImage m_whiteSquare;
};
Q_DECLARE_METATYPE(QImage::Format);
void tst_QStaticText::constructionAndDestruction()
{
QStaticText text("My text");
}
void tst_QStaticText::copyConstructor()
{
QStaticText text(QLatin1String("My text"));
QTextOption textOption(Qt::AlignRight);
text.setTextOption(textOption);
text.setPerformanceHint(QStaticText::AggressiveCaching);
text.setTextWidth(123.456);
text.setTextFormat(Qt::PlainText);
QStaticText copiedText(text);
copiedText.setText(QLatin1String("Other text"));
QCOMPARE(copiedText.textOption().alignment(), Qt::AlignRight);
QCOMPARE(copiedText.performanceHint(), QStaticText::AggressiveCaching);
QCOMPARE(copiedText.textWidth(), 123.456);
QCOMPARE(copiedText.textFormat(), Qt::PlainText);
QStaticText otherCopiedText(copiedText);
otherCopiedText.setTextWidth(789);
QCOMPARE(otherCopiedText.text(), QString::fromLatin1("Other text"));
}
Q_DECLARE_METATYPE(QStaticText::PerformanceHint)
void tst_QStaticText::drawToPoint_data()
{
QTest::addColumn<QStaticText::PerformanceHint>("performanceHint");
QTest::newRow("Moderate caching") << QStaticText::ModerateCaching;
QTest::newRow("Aggressive caching") << QStaticText::AggressiveCaching;
}
void tst_QStaticText::drawToPoint()
{
QFETCH(QStaticText::PerformanceHint, performanceHint);
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.drawText(11, 12, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.setTextFormat(Qt::PlainText);
text.setPerformanceHint(performanceHint);
p.drawStaticText(QPointF(11, 12 - QFontMetricsF(p.font()).ascent()), text);
}
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
void tst_QStaticText::drawToRect_data()
{
QTest::addColumn<QStaticText::PerformanceHint>("performanceHint");
QTest::newRow("Moderate caching") << QStaticText::ModerateCaching;
QTest::newRow("Aggressive caching") << QStaticText::AggressiveCaching;
}
void tst_QStaticText::drawToRect()
{
QFETCH(QStaticText::PerformanceHint, performanceHint);
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.drawText(QRectF(11, 12, 10, 500), "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.setTextWidth(10),
p.setClipRect(QRectF(11, 12, 10, 500));
text.setPerformanceHint(performanceHint);
text.setTextFormat(Qt::PlainText);
p.drawStaticText(QPointF(11, 12), text);
}
#if defined(DEBUG_SAVE_IMAGE)
imageDrawText.save("drawToRect_imageDrawText.png");
imageDrawStaticText.save("drawToRect_imageDrawStaticText.png");
#endif
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
void tst_QStaticText::prepareToCorrectData()
{
QTransform transform;
transform.scale(2.0, 2.0);
transform.translate(100, 10);
transform.rotate(90, Qt::ZAxis);
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.setTransform(transform);
p.drawText(11, 12, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
p.setTransform(transform);
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.prepare(transform, p.font());
text.setTextFormat(Qt::PlainText);
p.drawStaticText(QPointF(11, 12 - QFontMetricsF(p.font()).ascent()), text);
}
#if defined(DEBUG_SAVE_IMAGE)
imageDrawText.save("prepareToCorrectData_imageDrawText.png");
imageDrawStaticText.save("prepareToCorrectData_imageDrawStaticText.png");
#endif
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
if (!supportsTransformations())
QEXPECT_FAIL("", "Graphics system does not support transformed text on this platform", Abort);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
void tst_QStaticText::prepareToWrongData()
{
QTransform transform;
transform.scale(2.0, 2.0);
transform.rotate(90, Qt::ZAxis);
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.drawText(11, 12, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.prepare(transform, p.font());
text.setTextFormat(Qt::PlainText);
p.drawStaticText(QPointF(11, 12 - QFontMetricsF(p.font()).ascent()), text);
}
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
void tst_QStaticText::setFont()
{
QFont font = QGuiApplication::font();
font.setBold(true);
font.setPointSize(28);
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.drawText(QRectF(0, 0, 1000, 1000), 0, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
p.setFont(font);
p.drawText(QRectF(11, 120, 1000, 1000), 0, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
QStaticText text;
text.setText("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.setTextFormat(Qt::PlainText);
p.drawStaticText(0, 0, text);
p.setFont(font);
p.drawStaticText(11, 120, text);
}
#if defined(DEBUG_SAVE_IMAGE)
imageDrawText.save("setFont_imageDrawText.png");
imageDrawStaticText.save("setFont_imageDrawStaticText.png");
#endif
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
void tst_QStaticText::setTextWidth()
{
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.drawText(QRectF(11, 12, 10, 500), "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.setTextWidth(10);
p.setClipRect(QRectF(11, 12, 10, 500));
p.drawStaticText(QPointF(11, 12), text);
}
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
void tst_QStaticText::translatedPainter()
{
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.translate(100, 200);
p.drawText(11, 12, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
p.translate(100, 200);
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.setTextFormat(Qt::PlainText);
p.drawStaticText(QPointF(11, 12 - QFontMetricsF(p.font()).ascent()), text);
}
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
bool tst_QStaticText::supportsTransformations() const
{
QPixmap pm(10, 10);
QPainter p(&pm);
return p.paintEngine()->type() != QPaintEngine::OpenGL;
}
void tst_QStaticText::rotatedPainter()
{
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.rotate(30.0);
p.drawText(QRectF(0, 0, 1000, 100), 0, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.setTextFormat(Qt::PlainText);
QPainter p(&imageDrawStaticText);
p.rotate(30.0);
p.drawStaticText(QPoint(0, 0), text);
}
#if defined(DEBUG_SAVE_IMAGE)
imageDrawText.save("rotatedPainter_imageDrawText.png");
imageDrawStaticText.save("rotatedPainter_imageDrawStaticText.png");
#endif
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
if (!supportsTransformations())
QEXPECT_FAIL("", "Graphics system does not support transformed text on this platform", Abort);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
void tst_QStaticText::scaledPainter()
{
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.scale(2.0, 0.2);
p.drawText(11, 12, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
p.scale(2.0, 0.2);
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.setTextFormat(Qt::PlainText);
p.drawStaticText(QPointF(11, 12 - QFontMetricsF(p.font()).ascent()), text);
}
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
if (!supportsTransformations())
QEXPECT_FAIL("", "Graphics system does not support transformed text on this platform", Abort);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
void tst_QStaticText::projectedPainter()
{
QTransform transform;
transform.rotate(90, Qt::XAxis);
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.setTransform(transform);
p.drawText(11, 12, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
p.setTransform(transform);
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.setTextFormat(Qt::PlainText);
p.drawStaticText(QPointF(11, 12 - QFontMetricsF(p.font()).ascent()), text);
}
QCOMPARE(imageDrawStaticText, imageDrawText);
}
#if 0
void tst_QStaticText::rotatedScaledAndTranslatedPainter_data()
{
QTest::addColumn<qreal>("offset");
for (int i=0; i<100; ++i) {
qreal offset = 300 + i / 100.;
QTest::newRow(QByteArray::number(offset).constData()) << offset;
}
}
void tst_QStaticText::rotatedScaledAndTranslatedPainter()
{
QFETCH(qreal, offset);
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.translate(offset, 0);
p.rotate(45.0);
p.scale(2.0, 2.0);
p.translate(100, 200);
p.drawText(11, 12, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
p.translate(offset, 0);
p.rotate(45.0);
p.scale(2.0, 2.0);
p.translate(100, 200);
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.setTextFormat(Qt::PlainText);
p.drawStaticText(QPointF(11, 12 - QFontMetricsF(p.font()).ascent()), text);
}
#if defined(DEBUG_SAVE_IMAGE)
imageDrawText.save("rotatedScaledAndPainter_imageDrawText.png");
imageDrawStaticText.save("rotatedScaledAndPainter_imageDrawStaticText.png");
#endif
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
if (!supportsTransformations())
QEXPECT_FAIL("", "Graphics system does not support transformed text on this platform", Abort);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
#endif
void tst_QStaticText::transformationChanged()
{
QPixmap imageDrawText(1000, 1000);
imageDrawText.fill(Qt::white);
{
QPainter p(&imageDrawText);
p.rotate(33.0);
p.scale(0.5, 0.7);
p.drawText(QRectF(0, 0, 1000, 1000), 0, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
p.scale(2.0, 2.5);
p.drawText(QRectF(0, 0, 1000, 1000), 0, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
}
QPixmap imageDrawStaticText(1000, 1000);
imageDrawStaticText.fill(Qt::white);
{
QPainter p(&imageDrawStaticText);
p.rotate(33.0);
p.scale(0.5, 0.7);
QStaticText text("Lorem ipsum dolor sit amet, consectetur adipiscing elit.");
text.setTextFormat(Qt::PlainText);
p.drawStaticText(QPointF(0, 0), text);
p.scale(2.0, 2.5);
p.drawStaticText(QPointF(0, 0), text);
}
#if defined(DEBUG_SAVE_IMAGE)
imageDrawText.save("transformationChanged_imageDrawText.png");
imageDrawStaticText.save("transformationChanged_imageDrawStaticText.png");
#endif
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
if (!supportsTransformations())
QEXPECT_FAIL("", "Graphics system does not support transformed text on this platform", Abort);
QCOMPARE(imageDrawStaticText, imageDrawText);
}
void tst_QStaticText::plainTextVsRichText()
{
QPixmap imagePlainText(1000, 1000);
imagePlainText.fill(Qt::white);
{
QPainter p(&imagePlainText);
QStaticText staticText;
staticText.setText("FOObar");
staticText.setTextFormat(Qt::PlainText);
p.drawStaticText(10, 10, staticText);
}
QPixmap imageRichText(1000, 1000);
imageRichText.fill(Qt::white);
{
QPainter p(&imageRichText);
QStaticText staticText;
staticText.setText("<html><body>FOObar</body></html>");
staticText.setTextFormat(Qt::RichText);
p.drawStaticText(10, 10, staticText);
}
#if defined(DEBUG_SAVE_IMAGE)
imagePlainText.save("plainTextVsRichText_imagePlainText.png");
imageRichText.save("plainTextVsRichText_imageRichText.png");
#endif
QVERIFY(imagePlainText.toImage() != m_whiteSquare);
QCOMPARE(imagePlainText, imageRichText);
}
static bool checkPixels(const QImage &image,
Qt::GlobalColor expectedColor1, Qt::GlobalColor expectedColor2,
QByteArray *errorMessage)
{
const QRgb expectedRgb1 = QColor(expectedColor1).rgba();
const QRgb expectedRgb2 = QColor(expectedColor2).rgba();
for (int x = 0, w = image.width(); x < w; ++x) {
for (int y = 0, h = image.height(); y < h; ++y) {
const QRgb pixel = image.pixel(x, y);
if (pixel != expectedRgb1 && pixel != expectedRgb2) {
QString message;
QDebug(&message) << "Color mismatch in image" << image
<< "at" << x << ',' << y << ':' << showbase << hex << pixel
<< "(expected: " << expectedRgb1 << ',' << expectedRgb2 << ')';
*errorMessage = message.toLocal8Bit();
return false;
}
}
}
return true;
}
void tst_QStaticText::setPenPlainText_data()
{
QTest::addColumn<QImage::Format>("format");
QTest::newRow("argb32pm") << QImage::Format_ARGB32_Premultiplied;
QTest::newRow("rgb32") << QImage::Format_RGB32;
QTest::newRow("rgba8888pm") << QImage::Format_RGBA8888_Premultiplied;
QTest::newRow("rgbx8888") << QImage::Format_RGBX8888;
}
void tst_QStaticText::setPenPlainText()
{
QFETCH(QImage::Format, format);
QFont font = QGuiApplication::font();
font.setStyleStrategy(QFont::NoAntialias);
QFontMetricsF fm(font);
QImage image(qCeil(fm.width("XXXXX")), qCeil(fm.height()), format);
image.fill(Qt::white);
{
QPainter p(&image);
p.setFont(font);
p.setPen(Qt::yellow);
QStaticText staticText("XXXXX");
staticText.setTextFormat(Qt::PlainText);
p.drawStaticText(0, 0, staticText);
}
QByteArray errorMessage;
QVERIFY2(checkPixels(image, Qt::yellow, Qt::white, &errorMessage),
errorMessage.constData());
}
void tst_QStaticText::setPenRichText()
{
QFont font = QGuiApplication::font();
font.setStyleStrategy(QFont::NoAntialias);
QFontMetricsF fm(font);
QPixmap image(qCeil(fm.width("XXXXX")), qCeil(fm.height()));
image.fill(Qt::white);
{
QPainter p(&image);
p.setFont(font);
p.setPen(Qt::green);
QStaticText staticText;
staticText.setText("<html><body>XXXXX</body></html>");
staticText.setTextFormat(Qt::RichText);
p.drawStaticText(0, 0, staticText);
}
QByteArray errorMessage;
QVERIFY2(checkPixels(image.toImage(), Qt::green, Qt::white, &errorMessage),
errorMessage.constData());
}
void tst_QStaticText::richTextOverridesPen()
{
QFont font = QGuiApplication::font();
font.setStyleStrategy(QFont::NoAntialias);
QFontMetricsF fm(font);
QPixmap image(qCeil(fm.width("XXXXX")), qCeil(fm.height()));
image.fill(Qt::white);
{
QPainter p(&image);
p.setFont(font);
p.setPen(Qt::green);
QStaticText staticText;
staticText.setText("<html><body><font color=\"#ff0000\">XXXXX</font></body></html>");
staticText.setTextFormat(Qt::RichText);
p.drawStaticText(0, 0, staticText);
}
QByteArray errorMessage;
QVERIFY2(checkPixels(image.toImage(), Qt::red, Qt::white, &errorMessage),
errorMessage.constData());
}
void tst_QStaticText::drawStruckOutText()
{
QPixmap imageDrawText(1000, 1000);
QPixmap imageDrawStaticText(1000, 1000);
imageDrawText.fill(Qt::white);
imageDrawStaticText.fill(Qt::white);
QString s = QString::fromLatin1("Foobar");
QFont font;
font.setStrikeOut(true);
font.setStyleStrategy(QFont::ForceIntegerMetrics);
{
QPainter p(&imageDrawText);
p.setFont(font);
p.drawText(QPointF(50, 50), s);
}
{
QPainter p(&imageDrawStaticText);
QStaticText text = QStaticText(s);
p.setFont(font);
p.drawStaticText(QPointF(50, 50 - QFontMetricsF(p.font()).ascent()), text);
}
#if defined(DEBUG_SAVE_IMAGE)
imageDrawText.save("drawStruckOutText_imageDrawText.png");
imageDrawStaticText.save("drawStruckOutText_imageDrawStaticText.png");
#endif
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
QCOMPARE(imageDrawText, imageDrawStaticText);
}
void tst_QStaticText::drawOverlinedText()
{
QPixmap imageDrawText(1000, 1000);
QPixmap imageDrawStaticText(1000, 1000);
imageDrawText.fill(Qt::white);
imageDrawStaticText.fill(Qt::white);
QString s = QString::fromLatin1("Foobar");
QFont font;
font.setOverline(true);
font.setStyleStrategy(QFont::ForceIntegerMetrics);
{
QPainter p(&imageDrawText);
p.setFont(font);
p.drawText(QPointF(50, 50), s);
}
{
QPainter p(&imageDrawStaticText);
QStaticText text = QStaticText(s);
p.setFont(font);
p.drawStaticText(QPointF(50, 50 - QFontMetricsF(p.font()).ascent()), text);
}
#if defined(DEBUG_SAVE_IMAGE)
imageDrawText.save("drawOverlinedText_imageDrawText.png");
imageDrawStaticText.save("drawOverlinedText_imageDrawStaticText.png");
#endif
QVERIFY(imageDrawText.toImage() != m_whiteSquare);
QCOMPARE(imageDrawText, imageDrawStaticText);
}
void tst_QStaticText::drawUnderlinedText()
{
QPixmap imageDrawText(1000, 1000);
QPixmap imageDrawStaticText(1000, 1000);
imageDrawText.fill(Qt::white);
imageDrawStaticText.fill(Qt::white);
QString s = QString::fromLatin1("Foobar");
QFont font;
font.setUnderline(true);
font.setStyleStrategy(QFont::ForceIntegerMetrics);
{
QPainter p(&imageDrawText);
p.setFont(font);
p.drawText(QPointF(50, 50), s);
}
{
QPainter p(&imageDrawStaticText);
QStaticText text = QStaticText(s);
p.setFont(font);
p.drawStaticText(QPointF(50, 50 - QFontMetricsF(p.font()).ascent()), text);
}
#if defined(DEBUG_SAVE_IMAGE)
imageDrawText.save("drawUnderlinedText_imageDrawText.png");
imageDrawStaticText.save("drawUnderlinedText_imageDrawStaticText.png");
#endif
QCOMPARE(imageDrawText, imageDrawStaticText);
}
void tst_QStaticText::unprintableCharacter_qtbug12614()
{
QString s(QChar(0x200B)); // U+200B, ZERO WIDTH SPACE
QStaticText staticText(s);
QVERIFY(staticText.size().isValid()); // Force layout. Should not crash.
}
#ifdef QT_BUILD_INTERNAL
void tst_QStaticText::underlinedColor_qtbug20159()
{
QString multiScriptText;
multiScriptText += QChar(0x0410); // Cyrillic 'A'
multiScriptText += QLatin1Char('A');
QStaticText staticText(multiScriptText);
QFont font;
font.setUnderline(true);
staticText.prepare(QTransform(), font);
QStaticTextPrivate *d = QStaticTextPrivate::get(&staticText);
QCOMPARE(d->itemCount, 2);
// The pen should not be marked as dirty when drawing the underline
QVERIFY(!d->items[0].color.isValid());
QVERIFY(!d->items[1].color.isValid());
}
void tst_QStaticText::textDocumentColor()
{
QStaticText staticText("A<font color=\"red\">B</font>");
staticText.setTextFormat(Qt::RichText);
staticText.prepare();
QStaticTextPrivate *d = QStaticTextPrivate::get(&staticText);
QCOMPARE(d->itemCount, 2);
// The pen should not be marked as dirty when drawing the underline
QVERIFY(!d->items[0].color.isValid());
QVERIFY(d->items[1].color.isValid());
QCOMPARE(d->items[1].color, QColor(Qt::red));
}
#endif
class TestPaintEngine: public QPaintEngine
{
public:
void drawTextItem(const QPointF &p, const QTextItem &) Q_DECL_OVERRIDE
{
differentVerticalPositions.insert(qRound(p.y()));
}
void updateState(const QPaintEngineState &) Q_DECL_OVERRIDE {}
void drawPolygon(const QPointF *, int , PolygonDrawMode ) Q_DECL_OVERRIDE {}
bool begin(QPaintDevice *) Q_DECL_OVERRIDE { return true; }
bool end() Q_DECL_OVERRIDE { return true; }
void drawPixmap(const QRectF &, const QPixmap &, const QRectF &) Q_DECL_OVERRIDE {}
Type type() const Q_DECL_OVERRIDE
{
return User;
}
QSet<int> differentVerticalPositions;
};
class TestPixmap: public QPixmap
{
public:
TestPixmap(int w, int h) : QPixmap(w, h), testPaintEngine(new TestPaintEngine) {}
~TestPixmap() { delete testPaintEngine; }
QPaintEngine *paintEngine() const
{
return testPaintEngine;
}
TestPaintEngine *testPaintEngine;
};
void tst_QStaticText::multiLine()
{
TestPixmap pixmap(100, 100);
TestPaintEngine *paintEngine = pixmap.testPaintEngine;
{
QPainter p(&pixmap);
QStaticText text;
text.setText(QLatin1String("line 1") + QChar(QChar::LineSeparator) + QLatin1String("line 2"));
p.drawStaticText(0, 0, text);
}
QCOMPARE(paintEngine->differentVerticalPositions.size(), 2);
}
QTEST_MAIN(tst_QStaticText)
#include "tst_qstatictext.moc"