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::addToSceneGraph(QQuickTextNode *parentNode,
QQuickText::TextStyle style,
const QColor &styleColor)
{
if (m_currentLine.isValid())
processCurrentLine();
QList<BinaryTreeNode *> nodes;
QList<BinaryTreeNode *> imageNodes;
mergeProcessedNodes(&nodes, &imageNodes);
for (int i = 0; i < m_backgrounds.size(); ++i) {
const QRectF &rect = m_backgrounds.at(i).first;
const QColor &color = m_backgrounds.at(i).second;
parentNode->addRectangleNode(rect, color);
}
// Add all unselected text first
for (int i = 0; i < nodes.size(); ++i) {
const BinaryTreeNode *node = nodes.at(i);
if (node->selectionState == Unselected)
parentNode->addGlyphs(node->position, node->glyphRun, node->color, style, styleColor, 0);
}
for (int i = 0; i < imageNodes.size(); ++i) {
const BinaryTreeNode *node = imageNodes.at(i);
if (node->selectionState == Unselected)
parentNode->addImage(node->boundingRect, node->image);
}
// Then, prepend all selection rectangles to the tree
for (int i = 0; i < m_selectionRects.size(); ++i) {
const QRectF &rect = m_selectionRects.at(i);
parentNode->addRectangleNode(rect, m_selectionColor);
}
// Add decorations for each node to the tree.
for (int i = 0; i < m_lines.size(); ++i) {
const TextDecoration &textDecoration = m_lines.at(i);
QColor color = textDecoration.selectionState == Selected
? m_selectedTextColor
: textDecoration.color;
parentNode->addRectangleNode(textDecoration.rect, color);
}
// Finally add the selected text on top of everything
for (int i = 0; i < nodes.size(); ++i) {
const BinaryTreeNode *node = nodes.at(i);
QQuickDefaultClipNode *clipNode = node->clipNode;
if (clipNode != 0 && clipNode->parent() == 0)
parentNode->appendChildNode(clipNode);
if (node->selectionState == Selected) {
QColor color = m_selectedTextColor;
int previousNodeIndex = i - 1;
int nextNodeIndex = i + 1;
const BinaryTreeNode *previousNode = previousNodeIndex < 0 ? 0 : nodes.at(previousNodeIndex);
while (previousNode != 0 && qFuzzyCompare(previousNode->boundingRect.left(), node->boundingRect.left()))
previousNode = --previousNodeIndex < 0 ? 0 : nodes.at(previousNodeIndex);
const BinaryTreeNode *nextNode = nextNodeIndex == nodes.size() ? 0 : nodes.at(nextNodeIndex);
if (previousNode != 0 && previousNode->selectionState == Unselected)
parentNode->addGlyphs(previousNode->position, previousNode->glyphRun, color, style, styleColor, clipNode);
if (nextNode != 0 && nextNode->selectionState == Unselected)
parentNode->addGlyphs(nextNode->position, nextNode->glyphRun, color, style, styleColor, clipNode);
// If the previous or next node completely overlaps this one, then we have already drawn the glyphs of
// this node
bool drawCurrent = false;
if (previousNode != 0 || nextNode != 0) {
for (int i = 0; i < node->ranges.size(); ++i) {
const QPair<int, int> &range = node->ranges.at(i);
int rangeLength = range.second - range.first + 1;
if (previousNode != 0) {
for (int j = 0; j < previousNode->ranges.size(); ++j) {
const QPair<int, int> &otherRange = previousNode->ranges.at(j);
if (range.first <= otherRange.second && range.second >= otherRange.first) {
int start = qMax(range.first, otherRange.first);
int end = qMin(range.second, otherRange.second);
rangeLength -= end - start + 1;
if (rangeLength == 0)
break;
}
}
}
if (nextNode != 0 && rangeLength > 0) {
for (int j = 0; j < nextNode->ranges.size(); ++j) {
const QPair<int, int> &otherRange = nextNode->ranges.at(j);
if (range.first <= otherRange.second && range.second >= otherRange.first) {
int start = qMax(range.first, otherRange.first);
int end = qMin(range.second, otherRange.second);
rangeLength -= end - start + 1;
if (rangeLength == 0)
break;
}
}
}
if (rangeLength > 0) {
drawCurrent = true;
break;
}
}
} else {
drawCurrent = true;
}
if (drawCurrent)
parentNode->addGlyphs(node->position, node->glyphRun, color, style, styleColor, clipNode);
}
}
for (int i = 0; i < imageNodes.size(); ++i) {
const BinaryTreeNode *node = imageNodes.at(i);
if (node->selectionState == Selected) {
parentNode->addImage(node->boundingRect, node->image);
if (node->selectionState == Selected) {
QColor color = m_selectionColor;
color.setAlpha(128);
parentNode->addRectangleNode(node->boundingRect, color);
}
}
}
}
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;
}
