int TextDocumentStructureModel::rowCount(const QModelIndex &index) const
{
kDebug(32500) << "-------------------------- index:"<<index<<m_textDocument;
if (! m_textDocument) {
return 0;
}
if (! index.isValid()) {
// one root frame
return 1;
}
Q_ASSERT(index.internalId() < uint(m_nodeDataTable.count()));
const NodeData &nodeData = m_nodeDataTable.at(index.internalId());
if (nodeData.type == NodeData::Frame) {
QTextFrame* frame = nodeData.frame;
// count frames and blocks
int count = 0;
for (QTextFrame::iterator iterator = frame->begin(); !iterator.atEnd(); ++iterator) {
++count;
}
return count;
}
// should be a block then, no childs for now
return 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;
}
void QSGTextNode::addTextDocument(const QPointF &position, QTextDocument *textDocument, const QColor &color,
QSGText::TextStyle style, const QColor &styleColor)
{
Q_UNUSED(position)
QTextFrame *textFrame = textDocument->rootFrame();
QPointF p = textDocument->documentLayout()->frameBoundingRect(textFrame).topLeft();
QTextFrame::iterator it = textFrame->begin();
while (!it.atEnd()) {
addTextBlock(p, textDocument, it.currentBlock(), color, style, styleColor);
++it;
}
}
void QQuickTextNode::addTextDocument(const QPointF &position, QTextDocument *textDocument,
const QColor &textColor,
QQuickText::TextStyle style, const QColor &styleColor,
const QColor &anchorColor,
const QColor &selectionColor, const QColor &selectedTextColor,
int selectionStart, int selectionEnd)
{
QQuickTextNodeEngine engine;
engine.setTextColor(textColor);
engine.setSelectedTextColor(selectedTextColor);
engine.setSelectionColor(selectionColor);
engine.setAnchorColor(anchorColor);
engine.setPosition(position);
QList<QTextFrame *> frames;
frames.append(textDocument->rootFrame());
while (!frames.isEmpty()) {
QTextFrame *textFrame = frames.takeFirst();
frames.append(textFrame->childFrames());
engine.addFrameDecorations(textDocument, textFrame);
if (textFrame->firstPosition() > textFrame->lastPosition()
&& textFrame->frameFormat().position() != QTextFrameFormat::InFlow) {
const int pos = textFrame->firstPosition() - 1;
ProtectedLayoutAccessor *a = static_cast<ProtectedLayoutAccessor *>(textDocument->documentLayout());
QTextCharFormat format = a->formatAccessor(pos);
QRectF rect = a->frameBoundingRect(textFrame);
QTextBlock block = textFrame->firstCursorPosition().block();
engine.setCurrentLine(block.layout()->lineForTextPosition(pos - block.position()));
engine.addTextObject(rect.topLeft(), format, QQuickTextNodeEngine::Unselected, textDocument,
pos, textFrame->frameFormat().position());
} else {
QTextFrame::iterator it = textFrame->begin();
while (!it.atEnd()) {
Q_ASSERT(!engine.currentLine().isValid());
QTextBlock block = it.currentBlock();
engine.addTextBlock(textDocument, block, position, textColor, anchorColor, selectionStart, selectionEnd);
++it;
}
}
}
engine.addToSceneGraph(this, style, styleColor);
}
// 遍历框架
void MainWindow::showTextFrame()
{
QTextDocument *document = ui->textEdit->document();
QTextFrame *frame = document->rootFrame();
// 建立QTextFrame类的迭代器
QTextFrame::iterator it;
for (it = frame->begin(); !(it.atEnd()); ++it) {
// 获取当前框架的指针
QTextFrame *childFrame = it.currentFrame();
// 获取当前文本块
QTextBlock childBlock = it.currentBlock();
if (childFrame)
qDebug() << "frame";
else if (childBlock.isValid())
qDebug() << "block:" << childBlock.text();
}
}
QModelIndex TextDocumentStructureModel::parent(const QModelIndex &index) const
{
kDebug(32500) << "-------------------------- index:"<<index<<m_textDocument;
if (! m_textDocument || ! index.isValid()) {
return QModelIndex();
}
Q_ASSERT(index.internalId() < uint(m_nodeDataTable.count()));
const NodeData &nodeData = m_nodeDataTable.at(index.internalId());
QTextFrame* parentFrame;
if (nodeData.type == NodeData::Frame) {
parentFrame = nodeData.frame->parentFrame();
} else {
QTextBlock block = m_textDocument->findBlockByNumber(nodeData.blockNumber);
Q_ASSERT(block.isValid());
// QTextBlock's API has no option to query the parentframe, so get it via a cursor
QTextCursor cursor(block);
parentFrame = cursor.currentFrame();
}
if (! parentFrame) {
return QModelIndex();
}
QTextFrame* grandParentFrame = parentFrame->parentFrame();
// parent is root frame?
if (! grandParentFrame) {
Q_ASSERT(parentFrame == m_textDocument->rootFrame());
return createIndex(0, 0, static_cast<quintptr>(0));
}
// find position of parentFrame
bool posFound = false;
int row = 0;
for (QTextFrame::iterator iterator = grandParentFrame->begin(); !iterator.atEnd(); ++iterator) {
if (iterator.currentFrame() == parentFrame) {
posFound = true;
break;
}
++row;
}
Q_ASSERT(posFound);Q_UNUSED(posFound);
return createIndex(row, 0, frameIndex(parentFrame));
}
QModelIndex TextDocumentStructureModel::index(int row, int column, const QModelIndex &parentIndex) const
{
kDebug(32500) << "-------------------------- row:" << row << "column:"<<column << "index:"<<parentIndex<<m_textDocument;
if (! m_textDocument) {
return QModelIndex();
}
if (! parentIndex.isValid()) {
return createIndex(row, column, static_cast<quintptr>(0));
}
Q_ASSERT(parentIndex.internalId() < uint(m_nodeDataTable.count()));
const NodeData &nodeData = m_nodeDataTable.at(parentIndex.internalId());
// can be only frame for now
Q_ASSERT(nodeData.type == NodeData::Frame);
QTextFrame* parentFrame = nodeData.frame;
int index = -1;
int count = 0;
for (QTextFrame::iterator iterator = parentFrame->begin(); !iterator.atEnd(); ++iterator) {
if (count == row) {
QTextFrame *frame = iterator.currentFrame();
if (frame) {
index = frameIndex(frame);
break;
} else {
QTextBlock block = iterator.currentBlock();
if (block.isValid()) {
index = blockIndex(block);
break;
}
}
}
++count;
}
Q_ASSERT(index != -1);
return createIndex(row, column, index);
}
void MainWindow::showList()
{
QTextCursor cursor = editor->textCursor();
QTextFrame *frame = cursor.currentFrame();
if (!frame)
return;
QTreeWidget *treeWidget = new QTreeWidget;
treeWidget->setColumnCount(1);
QStringList headerLabels;
headerLabels << tr("Lists");
treeWidget->setHeaderLabels(headerLabels);
QTreeWidgetItem *parentItem = 0;
QTreeWidgetItem *item;
QTreeWidgetItem *lastItem = 0;
parentItems.clear();
previousItems.clear();
//! [3]
QTextFrame::iterator it;
for (it = frame->begin(); !(it.atEnd()); ++it) {
QTextBlock block = it.currentBlock();
if (block.isValid()) {
QTextList *list = block.textList();
if (list) {
int index = list->itemNumber(block);
//! [3]
if (index == 0) {
parentItems.append(parentItem);
previousItems.append(lastItem);
listStructures.append(list);
parentItem = lastItem;
lastItem = 0;
if (parentItem != 0)
item = new QTreeWidgetItem(parentItem, lastItem);
else
item = new QTreeWidgetItem(treeWidget, lastItem);
} else {
while (parentItem != 0 && listStructures.last() != list) {
listStructures.pop_back();
parentItem = parentItems.takeLast();
lastItem = previousItems.takeLast();
}
if (parentItem != 0)
item = new QTreeWidgetItem(parentItem, lastItem);
else
item = new QTreeWidgetItem(treeWidget, lastItem);
}
item->setText(0, block.text());
lastItem = item;
/*
//! [4]
processListItem(list, index);
//! [4]
*/
//! [5]
}
//! [5] //! [6]
}
//! [6] //! [7]
}
//! [7]
treeWidget->setWindowTitle(tr("List Contents"));
treeWidget->show();
}
void QQuickTextNode::updateNodes()
{
return;
deleteContent();
if (m_text.isEmpty())
return;
if (m_usePixmapCache) {
// ### gunnar: port properly
// QPixmap pixmap = generatedPixmap();
// if (pixmap.isNull())
// return;
// QSGImageNode *pixmapNode = m_context->createImageNode();
// pixmapNode->setRect(pixmap.rect());
// pixmapNode->setSourceRect(pixmap.rect());
// pixmapNode->setOpacity(m_opacity);
// pixmapNode->setClampToEdge(true);
// pixmapNode->setLinearFiltering(m_linearFiltering);
// appendChildNode(pixmapNode);
} else {
if (m_text.isEmpty())
return;
// Implement styling by drawing text several times at slight shifts. shiftForStyle
// contains the sequence of shifted positions at which to draw the text. All except
// the last will be drawn with styleColor.
QList<QPointF> shiftForStyle;
switch (m_textStyle) {
case OutlineTextStyle:
// ### Should be made faster by implementing outline material
shiftForStyle << QPointF(-1, 0);
shiftForStyle << QPointF(0, -1);
shiftForStyle << QPointF(1, 0);
shiftForStyle << QPointF(0, 1);
break;
case SunkenTextStyle:
shiftForStyle << QPointF(0, -1);
break;
case RaisedTextStyle:
shiftForStyle << QPointF(0, 1);
break;
default:
break;
}
shiftForStyle << QPointF(0, 0); // Regular position
while (!shiftForStyle.isEmpty()) {
QPointF shift = shiftForStyle.takeFirst();
// Use styleColor for all but last shift
if (m_richText) {
QColor overrideColor = shiftForStyle.isEmpty() ? QColor() : m_styleColor;
QTextFrame *textFrame = m_textDocument->rootFrame();
QPointF p = m_textDocument->documentLayout()->frameBoundingRect(textFrame).topLeft();
QTextFrame::iterator it = textFrame->begin();
while (!it.atEnd()) {
addTextBlock(shift + p, it.currentBlock(), overrideColor);
++it;
}
} else {
addTextLayout(shift, m_textLayout, shiftForStyle.isEmpty()
? m_color
: m_styleColor);
}
}
}
}
