/**
* Updates the internal bounding box.
*/
void RSpline::updateBoundingBox() const {
//getExploded();
RPainterPath pp;
pp.addSpline(*this);
boundingBox = pp.getBoundingBox();
}
/**
* Renders the text data into painter paths.
*/
void RTextRenderer::render() {
boundingBox = RBox();
painterPaths.clear();
richText = "";
QString text = textData.getEscapedText();
//RVector position = textData.getPosition();
RVector position = textData.getAlignmentPoint();
double textHeight = textData.getTextHeight();
RS::VAlign verticalAlignment = textData.getVAlign();
RS::HAlign horizontalAlignment = textData.getHAlign();
double lineSpacingFactor = textData.getLineSpacingFactor();
QString fontName = textData.getFontName();
bool bold = textData.isBold();
bool italic = textData.isItalic();
double angle = textData.getAngle();
//RColor color = textData.getColor(true);
// split up text where separation is required due to line feed,
// or any type of height change (\P, \H[0-9]*.?[0-9]+;, \S*/*;)
// split up text at every formatting change:
QRegExp regExpAll(rxAll);
QStringList literals = text.split(regExpAll);
// collect formatting change information for every literal:
QStringList formattings;
int pos = 0;
while ((pos = regExpAll.indexIn(text, pos)) != -1) {
formattings << regExpAll.cap(1);
pos += regExpAll.matchedLength();
}
// x position in real units:
double xCursor = 0.0;
// y position for next text line:
double yCursor = 0.0;
// painter paths for current text line:
QList<RPainterPath> linePaths;
// max ascent of current text line:
double maxAscent = 0.0;
// max descent of current line:
double minDescent = 0.0;
// max descent of _previous_ line:
double minDescentPrevious = 0.0;
// true for the first block of the current line:
bool firstBlockInLine = true;
// current line has leading spaces:
bool leadingSpaces = false;
// current line has trailing spaces:
bool trailingSpaces = false;
// text has leading empty lines:
bool leadingEmptyLines = false;
// text has trailing empty lines:
bool trailingEmptyLines = false;
int lineCounter = 0;
QString textBlock;
QList<QTextLayout::FormatRange> formats;
bool blockChangedHeightOrFont = false;
// implicit top level format block:
QTextCharFormat f;
f.setForeground(QBrush(QColor()));
currentFormat.push(f);
QTextLayout::FormatRange fr;
fr.start = 0;
fr.length = 0;
fr.format = currentFormat.top();
formats.append(fr);
blockHeight.push(textHeight);
blockFont.push(fontName);
blockBold.push(bold);
blockItalic.push(italic);
useCadFont.push(RFontList::isCadFont(fontName));
openTags.push(QStringList());
width = 0.0;
height = 0.0;
// iterate through all text blocks:
for (int i=0; i<literals.size(); ++i) {
// the literal text, e.g. "ABC":
QString literal = literals.at(i);
// the formatting _after_ the text, e.g. "\C1;"
QString formatting;
if (i<formattings.size()) {
formatting = formattings.at(i);
}
// qDebug() << "block: " << i;
// qDebug() << " literal: " << literal;
// qDebug() << " literal length: " << literal.length();
// qDebug() << " formatting: " << formatting;
// qDebug() << " font: " << blockFont.top();
// qDebug() << " height: " << blockHeight.top();
// qDebug() << " cad font: " << useCadFont.top();
// qDebug() << " xCursor: " << xCursor;
// handle literal:
textBlock.append(literal);
if (firstBlockInLine) {
if (!literal.isEmpty()) {
if (literal.at(0).isSpace()) {
leadingSpaces = true;
}
}
else {
if (formatting=="\\~") {
leadingSpaces = true;
}
}
firstBlockInLine = false;
}
bool lineFeed = false;
bool paragraphFeed = false;
bool heightChange = false;
bool stackedText = false;
bool fontChange = false;
bool colorChange = false;
bool blockEnd = false;
// detect formatting that ends the current text block:
if (!formatting.isEmpty()) {
fontChange = QRegExp(rxFontChangeTtf).exactMatch(formatting) ||
QRegExp(rxFontChangeCad).exactMatch(formatting);
colorChange = QRegExp(rxColorChangeCustom).exactMatch(formatting) ||
QRegExp(rxColorChangeIndex).exactMatch(formatting);
heightChange = QRegExp(rxHeightChange).exactMatch(formatting);
stackedText = QRegExp(rxStackedText).exactMatch(formatting);
lineFeed = QRegExp(rxLineFeed).exactMatch(formatting);
paragraphFeed = QRegExp(rxParagraphFeed).exactMatch(formatting);
blockEnd = QRegExp(rxEndBlock).exactMatch(formatting);
}
bool start = (i==0);
bool end = (i==literals.size()-1);
// first line is empty:
if (textBlock.trimmed().isEmpty() && (lineFeed || paragraphFeed || end)) {
if (start) {
leadingEmptyLines = true;
}
else if (end) {
trailingEmptyLines = true;
}
}
// reached a new text block that needs to be rendered separately
// due to line feed, height change, font change, ...:
if (target==RichText ||
lineFeed || paragraphFeed || heightChange || stackedText ||
fontChange || colorChange || end
|| (blockEnd && blockChangedHeightOrFont)) {
// render block _before_ format change that requires new block:
if (textBlock!="") {
// fix format lengths to match up. each format stops where
// the next one starts. formatting that is carried over is set
// again for the new format.
for (int i=0; i<formats.size(); i++) {
int nextStart;
if (i<formats.size()-1) {
nextStart = formats[i+1].start;
}
else {
nextStart = textBlock.length();
}
formats[i].length = nextStart - formats[i].start;
}
if (target==RichText) {
richText += getRichTextForBlock(
textBlock, formats);
}
if (target==PainterPaths) {
double horizontalAdvance = 0.0;
double horizontalAdvanceNoSpacing = 0.0;
double ascent = 0.0;
double descent = 0.0;
QList<RPainterPath> paths;
// get painter paths for current text block at height 1.0:
paths = getPainterPathsForBlock(
textBlock, formats,
horizontalAdvance,
horizontalAdvanceNoSpacing,
ascent, descent);
// transform to scale text from 1.0 to current text height:
QTransform sizeTransform;
sizeTransform.scale(blockHeight.top(), blockHeight.top());
// transform for current block due to xCursor position:
QTransform blockTransform;
blockTransform.translate(xCursor, 0);
// combine transforms for current text block:
QTransform allTransforms = sizeTransform;
allTransforms *= blockTransform;
maxAscent = qMax(maxAscent, ascent * blockHeight.top());
minDescent = qMin(minDescent, descent * blockHeight.top());
// transform paths of current block and append to paths
// of current text line:
for (int i=0; i<paths.size(); ++i) {
RPainterPath p = paths.at(i);
p.transform(allTransforms);
linePaths.append(p);
}
xCursor += horizontalAdvance * blockHeight.top();
}
}
// empty text, might be line feed, we need ascent, descent anyway:
else if (lineFeed || paragraphFeed || end) {
if (target==PainterPaths) {
double horizontalAdvance = 0.0;
double horizontalAdvanceNoSpacing = 0.0;
double ascent = 0.0;
double descent = 0.0;
// get painter paths for current text block at height 1.0:
getPainterPathsForBlock(
"A", QList<QTextLayout::FormatRange>(),
horizontalAdvance,
horizontalAdvanceNoSpacing,
ascent, descent);
maxAscent = qMax(maxAscent, ascent * blockHeight.top());
minDescent = qMin(minDescent, descent * blockHeight.top());
}
}
// handle stacked text:
if (stackedText) {
QRegExp reg;
reg.setPattern(rxStackedText);
reg.exactMatch(formatting);
if (target==PainterPaths) {
double horizontalAdvance[2];
horizontalAdvance[0] = 0.0;
horizontalAdvance[1] = 0.0;
double horizontalAdvanceNoSpacing[2];
horizontalAdvanceNoSpacing[0] = 0.0;
horizontalAdvanceNoSpacing[1] = 0.0;
double heightFactor = 0.4;
// s==0: superscript, s==1: subscript:
for (int s=0; s<=1; ++s) {
QString script = reg.cap(s+1);
QList<RPainterPath> paths;
double ascent = 0.0;
double descent = 0.0;
QList<QTextLayout::FormatRange> localFormats;
QTextLayout::FormatRange fr;
fr.start = 0;
fr.length = script.length();
fr.format = currentFormat.top();
localFormats.append(fr);
// get painter paths for superscript at height 1.0:
paths = getPainterPathsForBlock(
script, localFormats,
horizontalAdvance[s],
horizontalAdvanceNoSpacing[s],
ascent, descent);
if (s==0) {
maxAscent = qMax(maxAscent, ascent * blockHeight.top() * heightFactor + blockHeight.top()*(1.0-heightFactor));
}
else {
minDescent = qMin(minDescent, descent * blockHeight.top() * heightFactor);
}
// transform to scale text from 1.0 to current text height * 0.4:
QTransform sizeTransform;
sizeTransform.scale(blockHeight.top()*heightFactor, blockHeight.top()*heightFactor);
// move top text more to the right for italic texts:
double xOffset = 0.0;
if (s==0 && blockItalic.top()==true) {
double y = blockHeight.top()*(1.0-heightFactor);
// assume italic means roughly 12 degrees:
xOffset = tan(RMath::deg2rad(12)) * y;
}
// transform for current block due to xCursor position
// and top or bottom text position:
QTransform blockTransform;
blockTransform.translate(xCursor + xOffset,
s==0 ? blockHeight.top()*(1.0-heightFactor) : 0.0);
horizontalAdvance[s] += xOffset / (blockHeight.top() * heightFactor);
// combine transforms for current text block:
QTransform allTransforms = sizeTransform;
allTransforms *= blockTransform;
// transform paths of current block and append to paths
// of current text line:
for (int i=0; i<paths.size(); ++i) {
RPainterPath p = paths.at(i);
p.transform(allTransforms);
linePaths.append(p);
}
}
xCursor += qMax(horizontalAdvance[0], horizontalAdvance[1]) * blockHeight.top() * heightFactor;
}
if (target==RichText) {
QString super = reg.cap(1);
QString sub = reg.cap(2);
if (!super.isEmpty()) {
richText += QString("<span style=\"vertical-align:super;\">%1</span>").arg(super);
}
if (!sub.isEmpty()) {
richText += QString("<span style=\"vertical-align:sub;\">%1</span>").arg(sub);
}
}
}
// prepare for next text block:
if (lineFeed || paragraphFeed || end) {
if (!textBlock.isEmpty()) {
if (textBlock.at(textBlock.length()-1).isSpace()) {
trailingSpaces = true;
}
}
// else {
// if (formatting=="\\~") {
// trailingSpaces = true;
// }
// }
}
textBlock = "";
formats.clear();
QTextLayout::FormatRange fr;
fr.start = 0;
fr.length = 0;
fr.format = currentFormat.top();
formats.append(fr);
// handle text line.
// add all painter paths of the current line to result set of
// painter paths. apply line feed transformations.
if (lineFeed || paragraphFeed || end) {
// qDebug() << "lineFeed: adding text line:";
// qDebug() << " maxAscent: " << maxAscent;
// qDebug() << " minDescent: " << minDescent;
// qDebug() << " minDescentPrevious: " << minDescentPrevious;
// qDebug() << "got line feed or end";
// qDebug() << " trailingSpaces: " << trailingSpaces;
if (target==RichText) {
if (lineFeed || paragraphFeed) {
richText += "<br/>";
}
}
if (lineCounter!=0) {
yCursor += (minDescentPrevious - maxAscent) * lineSpacingFactor;
}
// calculate line bounding box for alignment without spaces at borders:
RBox lineBoundingBox;
for (int i=0; i<linePaths.size(); ++i) {
RPainterPath p = linePaths.at(i);
lineBoundingBox.growToInclude(p.getBoundingBox());
}
double featureSize = lineBoundingBox.getHeight();
QTransform lineTransform;
switch (horizontalAlignment) {
case RS::HAlignAlign:
case RS::HAlignFit:
case RS::HAlignLeft:
if (!leadingSpaces) {
// move completely to the left (left border is 0.0):
lineTransform.translate(
-lineBoundingBox.getMinimum().x,
yCursor);
}
else {
lineTransform.translate(0, yCursor);
}
break;
case RS::HAlignMid:
case RS::HAlignCenter:
if (!leadingSpaces && !trailingSpaces) {
lineTransform.translate(
-(lineBoundingBox.getMinimum().x +
lineBoundingBox.getMaximum().x)/2.0,
yCursor);
}
else {
lineTransform.translate(-xCursor/2.0, yCursor);
}
break;
case RS::HAlignRight:
if (!trailingSpaces) {
lineTransform.translate(-lineBoundingBox.getMaximum().x, yCursor);
}
else {
lineTransform.translate(-xCursor, yCursor);
}
break;
}
width = qMax(width, lineBoundingBox.getMaximum().x - qMin(0.0, lineBoundingBox.getMinimum().x));
// add current text line to result set:
QPen pen;
for (int i=0; i<linePaths.size(); ++i) {
RPainterPath p = linePaths[i];
if (i==0) {
pen = p.getPen();
if (pen.style()==Qt::NoPen) {
pen = QPen(p.getBrush().color());
}
}
p.transform(lineTransform);
p.setFeatureSize(featureSize);
painterPaths.append(p);
boundingBox.growToInclude(p.getBoundingBox());
}
RPainterPath bbPath;
bbPath.addBox(lineBoundingBox);
bbPath.transform(lineTransform);
bbPath.setFeatureSize(-featureSize);
bbPath.setPen(pen);
painterPaths.append(bbPath);
lineCounter++;
xCursor = 0.0;
maxAscent = 0.0;
minDescentPrevious = minDescent;
minDescent = 0.0;
linePaths.clear();
firstBlockInLine = true;
leadingSpaces = false;
trailingSpaces = false;
}
}
// handle formatting after text block, that applies either
// to the next text block(s) or the rest of the current text block:
if (formatting.isEmpty()) {
continue;
}
QRegExp reg;
// unicode:
reg.setPattern(rxUnicode);
if (reg.exactMatch(formatting)) {
textBlock += QChar(reg.cap(1).toInt(0, 16));
continue;
}
// curly braket open:
reg.setPattern(rxCurlyOpen);
if (reg.exactMatch(formatting)) {
textBlock += "{";
continue;
}
// curly braket close:
reg.setPattern(rxCurlyClose);
if (reg.exactMatch(formatting)) {
textBlock += "}";
continue;
}
// degree:
reg.setPattern(rxDegree);
if (reg.exactMatch(formatting)) {
textBlock += chDegree;
continue;
}
// plus/minus:
reg.setPattern(rxPlusMinus);
if (reg.exactMatch(formatting)) {
textBlock += chPlusMinus;
continue;
}
// diameter:
reg.setPattern(rxDiameter);
if (reg.exactMatch(formatting)) {
textBlock += chDiameter;
continue;
}
// backslash:
reg.setPattern(rxBackslash);
if (reg.exactMatch(formatting)) {
textBlock += "\\";
continue;
}
// non-breaking space:
reg.setPattern(rxNonBreakingSpace);
if (reg.exactMatch(formatting)) {
if (target==PainterPaths) {
textBlock += QChar(Qt::Key_nobreakspace);
}
if (target==RichText) {
textBlock += " ";
}
continue;
}
// font change (TTF):
reg.setPattern(rxFontChangeTtf);
if (reg.exactMatch(formatting)) {
blockFont.top() = reg.cap(1);
blockBold.top() = (reg.cap(2).toInt()!=0);
blockItalic.top() = (reg.cap(3).toInt()!=0);
useCadFont.top() = false;
blockChangedHeightOrFont = true;
if (target==RichText) {
QString style;
style += QString("font-family:%1;").arg(blockFont.top());
style += QString("font-weight:%1;").arg(blockBold.top() ? "bold" : "normal");
style += QString("font-style:%1;").arg(blockItalic.top() ? "italic" : "normal");
richText += QString("<span style=\"%1\">").arg(style);
openTags.top().append("span");
}
continue;
}
// font change (CAD):
reg.setPattern(rxFontChangeCad);
if (reg.exactMatch(formatting)) {
blockFont.top() = reg.cap(1);
useCadFont.top() = true;
if (xCursor>RS::PointTolerance) {
RFont* f = RFontList::get(blockFont.top());
if (f!=NULL && f->isValid()) {
xCursor += f->getLetterSpacing() / 9.0;
}
}
blockChangedHeightOrFont = true;
if (target==RichText) {
QString style;
style += QString("font-family:%1;").arg(blockFont.top());
richText += QString("<span style=\"%1\">").arg(style);
openTags.top().append("span");
}
continue;
}
// height change:
reg.setPattern(rxHeightChange);
if (reg.exactMatch(formatting)) {
bool factor = reg.cap(2)=="x";
if (factor) {
blockHeight.top() *= reg.cap(1).toDouble();
}
else {
blockHeight.top() = reg.cap(1).toDouble();
}
blockChangedHeightOrFont = true;
if (target==RichText) {
QString style;
style += QString("font-size:%1pt;").arg(blockHeight.top() * fontHeightFactor);
richText += QString("<span style=\"%1\">").arg(style);
openTags.top().append("span");
}
continue;
}
QTextLayout::FormatRange fr;
fr.start = textBlock.length();
fr.length = 0;
// start format block:
reg.setPattern(rxBeginBlock);
if (reg.exactMatch(formatting)) {
currentFormat.push(currentFormat.top());
blockFont.push(blockFont.top());
blockBold.push(blockBold.top());
blockItalic.push(blockItalic.top());
blockHeight.push(blockHeight.top());
useCadFont.push(useCadFont.top());
if (target==RichText) {
openTags.push(QStringList());
}
blockChangedHeightOrFont = false;
continue;
}
// end format block:
reg.setPattern(rxEndBlock);
if (reg.exactMatch(formatting)) {
currentFormat.pop();
fr.format = currentFormat.top();
formats.append(fr);
blockFont.pop();
blockBold.pop();
blockItalic.pop();
blockHeight.pop();
useCadFont.pop();
blockChangedHeightOrFont = false;
if (target==RichText) {
// close all tags that were opened in this block:
for (int i=openTags.top().size()-1; i>=0; --i) {
QString tag = openTags.top().at(i);
richText += QString("</%1>").arg(tag);
}
openTags.pop();
}
continue;
}
// color change (indexed):
reg.setPattern(rxColorChangeIndex);
if (reg.exactMatch(formatting)) {
RColor blockColor = RColor::createFromCadIndex(reg.cap(1));
if (blockColor.isByLayer()) {
currentFormat.top().setForeground(RColor::CompatByLayer);
} else if (blockColor.isByBlock()) {
currentFormat.top().setForeground(RColor::CompatByBlock);
}
else {
currentFormat.top().setForeground(blockColor);
}
fr.format = currentFormat.top();
formats.append(fr);
if (target==RichText) {
QString style;
style += QString("color:%1;").arg(blockColor.name());
richText += QString("<span style=\"%1\">").arg(style);
openTags.top().append("span");
}
continue;
}
// color change (custom):
reg.setPattern(rxColorChangeCustom);
if (reg.exactMatch(formatting)) {
RColor blockColor = RColor::createFromCadCustom(reg.cap(1));
currentFormat.top().setForeground(blockColor);
fr.format = currentFormat.top();
formats.append(fr);
if (target==RichText) {
QString style;
style += QString("color:%1;").arg(blockColor.name());
richText += QString("<span style=\"%1\">").arg(style);
openTags.top().append("span");
}
continue;
}
}
if (target==PainterPaths) {
// at this point, the text is at 0/0 with the base line of the
// first text line at y==0
// vertical alignment:
double topLine = qMax(textHeight, boundingBox.getMaximum().y);
double bottomLine = qMin(0.0, boundingBox.getMinimum().y);
QTransform globalTransform;
globalTransform.translate(position.x, position.y);
globalTransform.rotate(RMath::rad2deg(angle));
switch (verticalAlignment) {
case RS::VAlignTop:
//if (!leadingEmptyLines) {
globalTransform.translate(0.0, -topLine);
//}
break;
case RS::VAlignMiddle:
if (leadingEmptyLines || trailingEmptyLines) {
globalTransform.translate(0.0, -(yCursor+textHeight)/2.0);
}
else {
globalTransform.translate(0.0, -(bottomLine + topLine) / 2.0);
}
break;
case RS::VAlignBottom:
case RS::VAlignBase:
if (trailingEmptyLines) {
globalTransform.translate(0.0, -yCursor);
}
else {
globalTransform.translate(0.0, -bottomLine);
}
break;
}
height = boundingBox.getHeight();
// apply global transform for position, angle and vertical alignment:
boundingBox = RBox();
for (int i=0; i<painterPaths.size(); ++i) {
painterPaths[i].transform(globalTransform);
boundingBox.growToInclude(painterPaths[i].getBoundingBox());
}
}
if (target==RichText) {
// close all tags that were opened:
for (int i=openTags.top().size()-1; i>=0; --i) {
QString tag = openTags.top().at(i);
richText += QString("</%1>").arg(tag);
}
}
}