QSGNode *QQuickTextField::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *data)
{
QQuickDefaultClipNode *clipNode = static_cast<QQuickDefaultClipNode *>(oldNode);
if (!clipNode)
clipNode = new QQuickDefaultClipNode(QRectF());
clipNode->setRect(clipRect().adjusted(leftPadding(), topPadding(), -rightPadding(), -bottomPadding()));
clipNode->update();
QSGNode *textNode = QQuickTextInput::updatePaintNode(clipNode->firstChild(), data);
if (!textNode->parent())
clipNode->appendChildNode(textNode);
return clipNode;
}
void QQuickTextNodeEngine::processCurrentLine()
{
// No glyphs, do nothing
if (m_currentLineTree.isEmpty())
return;
// 1. Go through current line and get correct decoration position for each node based on
// neighbouring decorations. Add decoration to global list
// 2. Create clip nodes for all selected text. Try to merge as many as possible within
// the line.
// 3. Add QRects to a list of selection rects.
// 4. Add all nodes to a global processed list
QVarLengthArray<int> sortedIndexes; // Indexes in tree sorted by x position
BinaryTreeNode::inOrder(m_currentLineTree, &sortedIndexes);
Q_ASSERT(sortedIndexes.size() == m_currentLineTree.size());
SelectionState currentSelectionState = Unselected;
QRectF currentRect;
QQuickTextNode::Decorations currentDecorations = QQuickTextNode::NoDecoration;
qreal underlineOffset = 0.0;
qreal underlineThickness = 0.0;
qreal overlineOffset = 0.0;
qreal overlineThickness = 0.0;
qreal strikeOutOffset = 0.0;
qreal strikeOutThickness = 0.0;
QRectF decorationRect = currentRect;
QColor lastColor;
QColor lastBackgroundColor;
QVarLengthArray<TextDecoration> pendingUnderlines;
QVarLengthArray<TextDecoration> pendingOverlines;
QVarLengthArray<TextDecoration> pendingStrikeOuts;
if (!sortedIndexes.isEmpty()) {
QQuickDefaultClipNode *currentClipNode = m_hasSelection ? new QQuickDefaultClipNode(QRectF()) : 0;
bool currentClipNodeUsed = false;
for (int i=0; i<=sortedIndexes.size(); ++i) {
BinaryTreeNode *node = 0;
if (i < sortedIndexes.size()) {
int sortedIndex = sortedIndexes.at(i);
Q_ASSERT(sortedIndex < m_currentLineTree.size());
node = m_currentLineTree.data() + sortedIndex;
}
if (i == 0)
currentSelectionState = node->selectionState;
// Update decorations
if (currentDecorations != QQuickTextNode::NoDecoration) {
decorationRect.setY(m_position.y() + m_currentLine.y());
decorationRect.setHeight(m_currentLine.height());
if (node != 0)
decorationRect.setRight(node->boundingRect.left());
TextDecoration textDecoration(currentSelectionState, decorationRect, lastColor);
if (currentDecorations & QQuickTextNode::Underline)
pendingUnderlines.append(textDecoration);
if (currentDecorations & QQuickTextNode::Overline)
pendingOverlines.append(textDecoration);
if (currentDecorations & QQuickTextNode::StrikeOut)
pendingStrikeOuts.append(textDecoration);
if (currentDecorations & QQuickTextNode::Background)
m_backgrounds.append(qMakePair(decorationRect, lastBackgroundColor));
}
// If we've reached an unselected node from a selected node, we add the
// selection rect to the graph, and we add decoration every time the
// selection state changes, because that means the text color changes
if (node == 0 || node->selectionState != currentSelectionState) {
currentRect.setY(m_position.y() + m_currentLine.y());
currentRect.setHeight(m_currentLine.height());
if (currentSelectionState == Selected)
m_selectionRects.append(currentRect);
if (currentClipNode != 0) {
if (!currentClipNodeUsed) {
delete currentClipNode;
} else {
currentClipNode->setIsRectangular(true);
currentClipNode->setRect(currentRect);
currentClipNode->update();
}
}
if (node != 0 && m_hasSelection)
currentClipNode = new QQuickDefaultClipNode(QRectF());
else
currentClipNode = 0;
currentClipNodeUsed = false;
if (node != 0) {
currentSelectionState = node->selectionState;
currentRect = node->boundingRect;
// Make sure currentRect is valid, otherwise the unite won't work
if (currentRect.isNull())
currentRect.setSize(QSizeF(1, 1));
}
} else {
if (currentRect.isNull())
currentRect = node->boundingRect;
else
currentRect = currentRect.united(node->boundingRect);
}
if (node != 0) {
if (node->selectionState == Selected) {
node->clipNode = currentClipNode;
currentClipNodeUsed = true;
}
decorationRect = node->boundingRect;
// If previous item(s) had underline and current does not, then we add the
// pending lines to the lists and likewise for overlines and strikeouts
if (!pendingUnderlines.isEmpty()
&& !(node->decorations & QQuickTextNode::Underline)) {
addTextDecorations(pendingUnderlines, underlineOffset, underlineThickness);
pendingUnderlines.clear();
underlineOffset = 0.0;
underlineThickness = 0.0;
}
// ### Add pending when overlineOffset/thickness changes to minimize number of
// nodes
if (!pendingOverlines.isEmpty()) {
addTextDecorations(pendingOverlines, overlineOffset, overlineThickness);
pendingOverlines.clear();
overlineOffset = 0.0;
overlineThickness = 0.0;
}
// ### Add pending when overlineOffset/thickness changes to minimize number of
// nodes
if (!pendingStrikeOuts.isEmpty()) {
addTextDecorations(pendingStrikeOuts, strikeOutOffset, strikeOutThickness);
pendingStrikeOuts.clear();
strikeOutOffset = 0.0;
strikeOutThickness = 0.0;
}
// Merge current values with previous. Prefer greatest thickness
QRawFont rawFont = node->glyphRun.rawFont();
if (node->decorations & QQuickTextNode::Underline) {
if (rawFont.lineThickness() > underlineThickness) {
underlineThickness = rawFont.lineThickness();
underlineOffset = rawFont.underlinePosition();
}
}
if (node->decorations & QQuickTextNode::Overline) {
overlineOffset = -rawFont.ascent();
overlineThickness = rawFont.lineThickness();
}
if (node->decorations & QQuickTextNode::StrikeOut) {
strikeOutThickness = rawFont.lineThickness();
strikeOutOffset = rawFont.ascent() / -3.0;
}
currentDecorations = node->decorations;
lastColor = node->color;
lastBackgroundColor = node->backgroundColor;
m_processedNodes.append(*node);
}
}
if (!pendingUnderlines.isEmpty())
addTextDecorations(pendingUnderlines, underlineOffset, underlineThickness);
if (!pendingOverlines.isEmpty())
addTextDecorations(pendingOverlines, overlineOffset, overlineThickness);
if (!pendingStrikeOuts.isEmpty())
addTextDecorations(pendingStrikeOuts, strikeOutOffset, strikeOutThickness);
}
m_currentLineTree.clear();
m_currentLine = QTextLine();
m_hasSelection = false;
}