void TextLabel::drawTextLayout(QPainter *painter, const QTextLayout &layout, const QRect &rect)
{
if (rect.width() < 1 || rect.height() < 1) {
return;
}
QPixmap pixmap(rect.size());
pixmap.fill(Qt::transparent);
QPainter p(&pixmap);
p.setPen(painter->pen());
// Create the alpha gradient for the fade out effect
QLinearGradient alphaGradient(0, 0, 1, 0);
alphaGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
if (layout.textOption().textDirection() == Qt::LeftToRight) {
alphaGradient.setColorAt(0, QColor(0, 0, 0, 255));
alphaGradient.setColorAt(1, QColor(0, 0, 0, 0));
} else {
alphaGradient.setColorAt(0, QColor(0, 0, 0, 0));
alphaGradient.setColorAt(1, QColor(0, 0, 0, 255));
}
QFontMetrics fm(layout.font());
int textHeight = layout.lineCount() * fm.lineSpacing();
QPointF position(0, (rect.height() - textHeight) / 2);
QList<QRect> fadeRects;
int fadeWidth = 30;
// Draw each line in the layout
for (int i = 0; i < layout.lineCount(); i++) {
QTextLine line = layout.lineAt(i);
line.draw(&p, position);
// Add a fade out rect to the list if the line is too long
if (line.naturalTextWidth() > rect.width())
{
int x = int(qMin(line.naturalTextWidth(), (qreal)pixmap.width())) - fadeWidth;
int y = int(line.position().y() + position.y());
QRect r = QStyle::visualRect(layout.textOption().textDirection(), pixmap.rect(),
QRect(x, y, fadeWidth, int(line.height())));
fadeRects.append(r);
}
}
// Reduce the alpha in each fade out rect using the alpha gradient
if (!fadeRects.isEmpty()) {
p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
foreach (const QRect &rect, fadeRects) {
p.fillRect(rect, alphaGradient);
}
void tst_QTextFormat::testTabsUsed()
{
QTextDocument doc;
QTextCursor cursor(&doc);
QList<QTextOption::Tab> tabs;
QTextBlockFormat format;
QTextOption::Tab tab;
tab.position = 100;
tabs.append(tab);
format.setTabPositions(tabs);
cursor.mergeBlockFormat(format);
cursor.insertText("foo\tbar");
//doc.setPageSize(QSizeF(200, 200));
doc.documentLayout()->pageCount(); // force layout;
QTextBlock block = doc.begin();
QTextLayout *layout = block.layout();
QVERIFY(layout);
QCOMPARE(layout->lineCount(), 1);
QTextLine line = layout->lineAt(0);
QCOMPARE(line.cursorToX(4), 100.);
QTextOption option = layout->textOption();
QCOMPARE(option.tabs().count(), tabs.count());
}
void TestDocumentLayout::placeAnchoredFrame()
{
initForNewTest(QString());
MockShape *picture = new MockShape();
picture->setSize(QSizeF(100, 100));
KTextAnchor *anchor = new KTextAnchor(picture);
anchor->setOffset(QPointF(23, 45));
QTextCursor cursor(doc);
KInlineTextObjectManager *manager = new KInlineTextObjectManager();
layout->setInlineTextObjectManager(manager);
MockLayoutState *state = new MockLayoutState(doc);
layout->setLayout(state);
state->shape = shape1;
QCOMPARE(doc->begin().text().length(), 0);
manager->insertInlineObject(cursor, anchor);
QCOMPARE(doc->begin().text().length(), 1);
QCOMPARE(cursor.position(), 1);
shape1->setPosition(QPointF(300, 300));
layout->layout();
QCOMPARE(picture->parent(), shape1);
QCOMPARE(picture->position(), QPointF(23, 59.4));
cursor.setPosition(0);
cursor.insertText("foo"); // moves my anchors slightly to the right/down and gives line height
layout->layout();
QCOMPARE(picture->parent(), shape1);
QPointF newPos = picture->position();
QVERIFY(newPos.x() > 23);
QVERIFY(newPos.y() > 45); // it adds the baseline now
cursor.movePosition(QTextCursor::End);
cursor.insertText("\nNew Line\nAnd another");
layout->layout();
QCOMPARE(picture->position(), newPos);
QTextLayout *firstLineLayout = doc->begin().layout();
QTextOption option = firstLineLayout->textOption();
option.setAlignment(Qt::AlignHCenter);
firstLineLayout->setTextOption(option);
layout->layout();
QTextLine first = doc->begin().layout()->lineAt(0);
QVERIFY(first.isValid());
QVERIFY(first.naturalTextRect().x() > 10);
newPos.setX(newPos.x() + first.naturalTextRect().x()); // text is moved due to alignment
QCOMPARE(picture->position(), newPos);
anchor->setOffset(QPointF());
anchor->setAlignment(KTextAnchor::Left);
anchor->setAlignment(KTextAnchor::TopOfParagraph);
layout->layout();
// image is 100 wide, now centered in a parent of 200 so X = 50
QCOMPARE(picture->position(), QPointF(50, 0));
}
int KTextDocumentLayout::hitTestIterated(QTextFrame::iterator begin, QTextFrame::iterator end, const QPointF &point, Qt::HitTestAccuracy accuracy) const
{
int position = -1;
QTextFrame::iterator it = begin;
for (it = begin; it != end; ++it) {
QTextBlock block = it.currentBlock();
QTextTable *table = qobject_cast<QTextTable*>(it.currentFrame());
QTextFrame *subFrame = it.currentFrame();
if (table) {
QTextTableCell cell = m_state->hitTestTable(table, point);
if (cell.isValid()) {
position = hitTestIterated(cell.begin(), cell.end(), point,
accuracy);
if (position == -1)
position = cell.lastPosition();
return position;
}
continue;
} else if (subFrame) {
position = hitTestIterated(subFrame->begin(), subFrame->end(), point, accuracy);
if (position != -1)
return position;
continue;
} else {
if (!block.isValid())
continue;
}
// kDebug(32500) <<"hitTest[" << point.x() <<"," << point.y() <<"]";
QTextLayout *layout = block.layout();
if (point.y() > layout->boundingRect().bottom()) {
// just skip this block. position = block.position() + block.length() - 1;
continue;
}
for (int i = 0; i < layout->lineCount(); i++) {
QTextLine line = layout->lineAt(i);
// kDebug(32500) <<" + line[" << line.textStart() <<"]:" << line.y() <<"-" << line.height();
if (point.y() > line.y() + line.height()) {
position = line.textStart() + line.textLength();
continue;
}
if (accuracy == Qt::ExactHit && point.y() < line.y()) // between lines
return -1;
if (accuracy == Qt::ExactHit && // left or right of line
(point.x() < line.x() || point.x() > line.x() + line.width()))
return -1;
if (point.x() > line.width() && layout->textOption().textDirection() == Qt::RightToLeft) {
// totally right of RTL text means the position is the start of the text.
return block.position() + line.textStart();
}
return block.position() + line.xToCursor(point.x());
}
}
return -1;
}
