int KateLayoutCache::lastViewLine(int realLine)
{
if (!m_renderer->view()->dynWordWrap()) return 0;
KateLineLayoutPtr l = line(realLine);
Q_ASSERT(l);
return l->viewLineCount() - 1;
}
/**
* This returns the view line upon which realCursor is situated.
* The view line is the number of lines in the view from the first line
* The supplied cursor should be in real lines.
*/
int KateLayoutCache::viewLine(const KTextEditor::Cursor& realCursor)
{
if (realCursor.column() <= 0 || realCursor.line() < 0) return 0;
KateLineLayoutPtr thisLine = line(realCursor.line());
for (int i = 0; i < thisLine->viewLineCount(); ++i) {
const KateTextLayout& l = thisLine->viewLine(i);
if (realCursor.column() >= l.startCol() && realCursor.column() < l.endCol())
return i;
}
return thisLine->viewLineCount() - 1;
}
KateLineLayoutPtr KateLayoutCache::line( int realLine, int virtualLine )
{
if (m_lineLayouts.contains(realLine)) {
KateLineLayoutPtr l = m_lineLayouts[realLine];
// ensure line is OK
Q_ASSERT (l->line() == realLine);
Q_ASSERT (realLine < m_renderer->doc()->buffer().lines());
if (virtualLine != -1)
l->setVirtualLine(virtualLine);
if (!l->isValid())
{
l->setUsePlainTextLine (acceptDirtyLayouts());
l->textLine (!acceptDirtyLayouts());
m_renderer->layoutLine(l, wrap() ? m_viewWidth : -1, enableLayoutCache);
}
else if (l->isLayoutDirty() && !acceptDirtyLayouts())
{
// reset textline
l->setUsePlainTextLine (false);
l->textLine (true);
m_renderer->layoutLine(l, wrap() ? m_viewWidth : -1, enableLayoutCache);
}
Q_ASSERT(l->isValid() && (!l->isLayoutDirty() || acceptDirtyLayouts()));
return l;
}
if (realLine < 0 || realLine >= m_renderer->doc()->lines())
return KateLineLayoutPtr();
KateLineLayoutPtr l(new KateLineLayout(*m_renderer));
l->setLine(realLine, virtualLine);
// Mark it dirty, because it may not have the syntax highlighting applied
// mark this here, to allow layoutLine to use plainLines...
if (acceptDirtyLayouts())
l->setUsePlainTextLine (true);
m_renderer->layoutLine(l, wrap() ? m_viewWidth : -1, enableLayoutCache);
Q_ASSERT(l->isValid());
if (acceptDirtyLayouts())
l->setLayoutDirty (true);
m_lineLayouts.insert(realLine, l);
return l;
}
void KateLayoutCache::updateViewCache(const KTextEditor::Cursor& startPos, int newViewLineCount, int viewLinesScrolled)
{
//kDebug( 13033 ) << startPos << " nvlc " << newViewLineCount << " vls " << viewLinesScrolled;
int oldViewLineCount = m_textLayouts.count();
if (newViewLineCount == -1)
newViewLineCount = oldViewLineCount;
enableLayoutCache = true;
int realLine;
if (newViewLineCount == -1)
realLine = m_renderer->folding().visibleLineToLine(m_renderer->folding().lineToVisibleLine(startPos.line()));
else
realLine = m_renderer->folding().visibleLineToLine(startPos.line());
int _viewLine = 0;
if (wrap()) {
// TODO check these assumptions are ok... probably they don't give much speedup anyway?
if (startPos == m_startPos && m_textLayouts.count()) {
_viewLine = m_textLayouts.first().viewLine();
} else if (viewLinesScrolled > 0 && viewLinesScrolled < m_textLayouts.count()) {
_viewLine = m_textLayouts[viewLinesScrolled].viewLine();
} else {
KateLineLayoutPtr l = line(realLine);
if (l) {
Q_ASSERT(l->isValid());
Q_ASSERT(l->length() >= startPos.column() || m_renderer->view()->wrapCursor());
for (; _viewLine < l->viewLineCount(); ++_viewLine) {
const KateTextLayout& t = l->viewLine(_viewLine);
if (t.startCol() >= startPos.column() || _viewLine == l->viewLineCount() - 1)
goto foundViewLine;
}
// FIXME FIXME need to calculate past-end-of-line position here...
Q_ASSERT(false);
foundViewLine:
Q_ASSERT(true);
}
}
}
m_startPos = startPos;
// Move the text layouts if we've just scrolled...
if (viewLinesScrolled != 0) {
// loop backwards if we've just scrolled up...
bool forwards = viewLinesScrolled >= 0 ? true : false;
for (int z = forwards ? 0 : m_textLayouts.count() - 1; forwards ? (z < m_textLayouts.count()) : (z >= 0); forwards ? z++ : z--) {
int oldZ = z + viewLinesScrolled;
if (oldZ >= 0 && oldZ < m_textLayouts.count())
m_textLayouts[z] = m_textLayouts[oldZ];
}
}
// Resize functionality
if (newViewLineCount > oldViewLineCount) {
m_textLayouts.reserve(newViewLineCount);
} else if (newViewLineCount < oldViewLineCount) {
/* FIXME reintroduce... check we're not missing any
int lastLine = m_textLayouts[newSize - 1].line();
for (int i = oldSize; i < newSize; i++) {
const KateTextLayout& layout = m_textLayouts[i];
if (layout.line() > lastLine && !layout.viewLine())
layout.kateLineLayout()->layout()->setCacheEnabled(false);
}*/
m_textLayouts.resize(newViewLineCount);
}
KateLineLayoutPtr l = line(realLine);
for (int i = 0; i < newViewLineCount; ++i) {
if (!l) {
if (i < m_textLayouts.count()) {
if (m_textLayouts[i].isValid())
m_textLayouts[i] = KateTextLayout::invalid();
} else {
m_textLayouts.append(KateTextLayout::invalid());
}
continue;
}
Q_ASSERT(l->isValid());
Q_ASSERT(_viewLine < l->viewLineCount());
if (i < m_textLayouts.count()) {
bool dirty = false;
if (m_textLayouts[i].line() != realLine || m_textLayouts[i].viewLine() != _viewLine || (!m_textLayouts[i].isValid() && l->viewLine(_viewLine).isValid()))
dirty = true;
m_textLayouts[i] = l->viewLine(_viewLine);
if (dirty)
m_textLayouts[i].setDirty(true);
} else {
m_textLayouts.append(l->viewLine(_viewLine));
}
//kDebug( 13033 ) << "Laid out line " << realLine << " (" << l << "), viewLine " << _viewLine << " (" << m_textLayouts[i].kateLineLayout().data() << ")";
//m_textLayouts[i].debugOutput();
_viewLine++;
if (_viewLine > l->viewLineCount() - 1) {
int virtualLine = l->virtualLine() + 1;
realLine = m_renderer->folding().visibleLineToLine(virtualLine);
_viewLine = 0;
if (realLine < m_renderer->doc()->lines()) {
l = line(realLine, virtualLine);
} else {
l = 0;
}
}
}
enableLayoutCache = false;
}
/*
The ultimate line painting function.
Currently missing features:
- draw indent lines
*/
void KateRenderer::paintTextLine(QPainter& paint, KateLineLayoutPtr range, int xStart, int xEnd, const KTextEditor::Cursor* cursor)
{
Q_ASSERT(range->isValid());
// kDebug( 13033 )<<"KateRenderer::paintTextLine";
// font data
const QFontMetricsF &fm = config()->fontMetrics();
int currentViewLine = -1;
if (cursor && cursor->line() == range->line())
currentViewLine = range->viewLineForColumn(cursor->column());
paintTextLineBackground(paint, range, currentViewLine, xStart, xEnd);
if (range->layout()) {
bool drawSelection = m_view->selection() && showSelections() && m_view->selectionRange().overlapsLine(range->line());
// Draw selection in block selecton mode. We need 2 kinds of selections that QTextLayout::draw can't render:
// - past-end-of-line selection and
// - 0-column-wide selection (used to indicate where text will be typed)
if (drawSelection && m_view->blockSelection()) {
int selectionStartColumn = m_doc->fromVirtualColumn(range->line(), m_doc->toVirtualColumn(m_view->selectionRange().start()));
int selectionEndColumn = m_doc->fromVirtualColumn(range->line(), m_doc->toVirtualColumn(m_view->selectionRange().end()));
QBrush selectionBrush = config()->selectionColor();
if (selectionStartColumn != selectionEndColumn) {
KateTextLayout lastLine = range->viewLine(range->viewLineCount() - 1);
if (selectionEndColumn > lastLine.startCol()) {
int selectionStartX = (selectionStartColumn > lastLine.startCol()) ? cursorToX(lastLine, selectionStartColumn, true) : 0;
int selectionEndX = cursorToX(lastLine, selectionEndColumn, true);
paint.fillRect(QRect(selectionStartX - xStart, (int)lastLine.lineLayout().y(), selectionEndX - selectionStartX, lineHeight()), selectionBrush);
}
} else {
const int selectStickWidth = 2;
KateTextLayout selectionLine = range->viewLine(range->viewLineForColumn(selectionStartColumn));
int selectionX = cursorToX(selectionLine, selectionStartColumn, true);
paint.fillRect(QRect(selectionX - xStart, (int)selectionLine.lineLayout().y(), selectStickWidth, lineHeight()), selectionBrush);
}
}
QVector<QTextLayout::FormatRange> additionalFormats;
if (range->length() > 0) {
// We may have changed the pen, be absolutely sure it gets set back to
// normal foreground color before drawing text for text that does not
// set the pen color
paint.setPen(attribute(KTextEditor::HighlightInterface::dsNormal)->foreground().color());
// Draw the text :)
if (drawSelection) {
// FIXME toVector() may be a performance issue
additionalFormats = decorationsForLine(range->textLine(), range->line(), true).toVector();
range->layout()->draw(&paint, QPoint(-xStart,0), additionalFormats);
} else {
range->layout()->draw(&paint, QPoint(-xStart,0));
}
}
QBrush backgroundBrush;
bool backgroundBrushSet = false;
// Loop each individual line for additional text decoration etc.
QListIterator<QTextLayout::FormatRange> it = range->layout()->additionalFormats();
QVectorIterator<QTextLayout::FormatRange> it2 = additionalFormats;
for (int i = 0; i < range->viewLineCount(); ++i) {
KateTextLayout line = range->viewLine(i);
// Determine the background to use, if any, for the end of this view line
backgroundBrushSet = false;
while (it2.hasNext()) {
const QTextLayout::FormatRange& fr = it2.peekNext();
if (fr.start > line.endCol())
break;
if (fr.start + fr.length > line.endCol()) {
if (fr.format.hasProperty(QTextFormat::BackgroundBrush)) {
backgroundBrushSet = true;
backgroundBrush = fr.format.background();
}
goto backgroundDetermined;
}
it2.next();
}
while (it.hasNext()) {
const QTextLayout::FormatRange& fr = it.peekNext();
if (fr.start > line.endCol())
break;
if (fr.start + fr.length > line.endCol()) {
if (fr.format.hasProperty(QTextFormat::BackgroundBrush)) {
backgroundBrushSet = true;
backgroundBrush = fr.format.background();
}
break;
}
it.next();
}
backgroundDetermined:
// Draw selection or background color outside of areas where text is rendered
if (!m_printerFriendly ) {
bool draw = false;
QBrush drawBrush;
if (m_view->selection() && !m_view->blockSelection() && m_view->lineEndSelected(line.end(true))) {
draw = true;
drawBrush = config()->selectionColor();
} else if (backgroundBrushSet && !m_view->blockSelection()) {
draw = true;
drawBrush = backgroundBrush;
}
if (draw) {
int fillStartX = line.endX() - line.startX() + line.xOffset() - xStart;
int fillStartY = lineHeight() * i;
int width= xEnd - xStart - fillStartX;
int height= lineHeight();
// reverse X for right-aligned lines
if (range->layout()->textOption().alignment() == Qt::AlignRight)
fillStartX = 0;
if (width > 0) {
QRect area(fillStartX, fillStartY, width, height);
paint.fillRect(area, drawBrush);
}
}
}
// Draw indent lines
if (showIndentLines() && i == 0)
{
const qreal w = spaceWidth();
const int lastIndentColumn = range->textLine()->indentDepth(m_tabWidth);
for (int x = m_indentWidth; x < lastIndentColumn; x += m_indentWidth)
{
paintIndentMarker(paint, x * w + 1 - xStart, range->line());
}
}
// draw an open box to mark non-breaking spaces
const QString& text = range->textLine()->string();
int y = lineHeight() * i + fm.ascent() - fm.strikeOutPos();
int nbSpaceIndex = text.indexOf(nbSpaceChar, line.lineLayout().xToCursor(xStart));
while (nbSpaceIndex != -1 && nbSpaceIndex < line.endCol()) {
int x = line.lineLayout().cursorToX(nbSpaceIndex);
if (x > xEnd)
break;
paintNonBreakSpace(paint, x - xStart, y);
nbSpaceIndex = text.indexOf(nbSpaceChar, nbSpaceIndex + 1);
}
// draw tab stop indicators
if (showTabs()) {
int tabIndex = text.indexOf(tabChar, line.lineLayout().xToCursor(xStart));
while (tabIndex != -1 && tabIndex < line.endCol()) {
int x = line.lineLayout().cursorToX(tabIndex);
if (x > xEnd)
break;
paintTabstop(paint, x - xStart + spaceWidth()/2.0, y);
tabIndex = text.indexOf(tabChar, tabIndex + 1);
}
}
// draw trailing spaces
if (showTrailingSpaces()) {
int spaceIndex = line.endCol() - 1;
int trailingPos = range->textLine()->lastChar();
if (trailingPos < 0)
trailingPos = 0;
if (spaceIndex >= trailingPos) {
while (spaceIndex >= line.startCol() && text.at(spaceIndex).isSpace()) {
if (text.at(spaceIndex) != '\t' || !showTabs())
paintTrailingSpace(paint, line.lineLayout().cursorToX(spaceIndex) - xStart + spaceWidth()/2.0, y);
--spaceIndex;
}
}
}
}
// draw word-wrap-honor-indent filling
if ( (range->viewLineCount() > 1) && range->shiftX() && (range->shiftX() > xStart) )
{
if (backgroundBrushSet)
paint.fillRect(0, lineHeight(), range->shiftX() - xStart, lineHeight() * (range->viewLineCount() - 1),
backgroundBrush);
paint.fillRect(0, lineHeight(), range->shiftX() - xStart, lineHeight() * (range->viewLineCount() - 1),
QBrush(config()->wordWrapMarkerColor(), Qt::Dense4Pattern));
}
// Draw caret
if (drawCaret() && cursor && range->includesCursor(*cursor)) {
int caretWidth, lineWidth = 2;
QColor color;
QTextLine line = range->layout()->lineForTextPosition(qMin(cursor->column(), range->length()));
// Determine the caret's style
caretStyles style = caretStyle();
// Make the caret the desired width
if (style == Line) {
caretWidth = lineWidth;
} else if (line.isValid() && cursor->column() < range->length()) {
caretWidth = int(line.cursorToX(cursor->column() + 1) - line.cursorToX(cursor->column()));
if (caretWidth < 0) {
caretWidth = -caretWidth;
}
} else {
caretWidth = spaceWidth();
}
// Determine the color
if (m_caretOverrideColor.isValid()) {
// Could actually use the real highlighting system for this...
// would be slower, but more accurate for corner cases
color = m_caretOverrideColor;
} else {
// search for the FormatRange that includes the cursor
foreach (const QTextLayout::FormatRange &r, range->layout()->additionalFormats()) {
if ((r.start <= cursor->column() ) && ( (r.start + r.length) > cursor->column())) {
// check for Qt::NoBrush, as the returned color is black() and no invalid QColor
QBrush foregroundBrush = r.format.foreground();
if (foregroundBrush != Qt::NoBrush) {
color = r.format.foreground().color();
}
break;
}
}
// still no color found, fall back to default style
if (!color.isValid())
color = attribute(KTextEditor::HighlightInterface::dsNormal)->foreground().color();
}
// Clip the caret - Qt's caret has a habit of intruding onto other lines.
paint.save();
paint.setClipRect(0, line.lineNumber() * lineHeight(), xEnd - xStart, lineHeight());
switch(style) {
case Line :
paint.setPen(QPen(color, caretWidth));
break;
case Block :
// use a gray caret so it's possible to see the character
color.setAlpha(128);
paint.setPen(QPen(color, caretWidth));
break;
case Underline :
paint.setClipRect(0, lineHeight() - lineWidth, xEnd - xStart, lineWidth);
break;
case Half :
color.setAlpha(128);
paint.setPen(QPen(color, caretWidth));
paint.setClipRect(0, lineHeight() / 2, xEnd - xStart, lineHeight() / 2);
break;
}
if (cursor->column() <= range->length()) {
range->layout()->drawCursor(&paint, QPoint(-xStart,0), cursor->column(), caretWidth);
} else {
// Off the end of the line... must be block mode. Draw the caret ourselves.
const KateTextLayout& lastLine = range->viewLine(range->viewLineCount() - 1);
int x = cursorToX(lastLine, KTextEditor::Cursor(range->line(), cursor->column()), true);
if ((x >= xStart) && (x <= xEnd)) {
paint.fillRect(x - xStart, (int)lastLine.lineLayout().y(), caretWidth, lineHeight(), color);
}
}
paint.restore();
}
void KateRenderer::paintTextLineBackground(QPainter& paint, KateLineLayoutPtr layout, int currentViewLine, int xStart, int xEnd)
{
if (isPrinterFriendly())
return;
// Normal background color
QColor backgroundColor( config()->backgroundColor() );
// paint the current line background if we're on the current line
QColor currentLineColor = config()->highlightedLineColor();
// Check for mark background
int markRed = 0, markGreen = 0, markBlue = 0, markCount = 0;
// Retrieve marks for this line
uint mrk = m_doc->mark( layout->line() );
if (mrk)
{
for (uint bit = 0; bit < 32; bit++)
{
KTextEditor::MarkInterface::MarkTypes markType = (KTextEditor::MarkInterface::MarkTypes)(1<<bit);
if (mrk & markType)
{
QColor markColor = config()->lineMarkerColor(markType);
if (markColor.isValid()) {
markCount++;
markRed += markColor.red();
markGreen += markColor.green();
markBlue += markColor.blue();
}
}
} // for
} // Marks
if (markCount) {
markRed /= markCount;
markGreen /= markCount;
markBlue /= markCount;
backgroundColor.setRgb(
int((backgroundColor.red() * 0.9) + (markRed * 0.1)),
int((backgroundColor.green() * 0.9) + (markGreen * 0.1)),
int((backgroundColor.blue() * 0.9) + (markBlue * 0.1))
);
}
// Draw line background
paint.fillRect(0, 0, xEnd - xStart, lineHeight() * layout->viewLineCount(), backgroundColor);
// paint the current line background if we're on the current line
if (currentViewLine != -1) {
if (markCount) {
markRed /= markCount;
markGreen /= markCount;
markBlue /= markCount;
currentLineColor.setRgb(
int((currentLineColor.red() * 0.9) + (markRed * 0.1)),
int((currentLineColor.green() * 0.9) + (markGreen * 0.1)),
int((currentLineColor.blue() * 0.9) + (markBlue * 0.1))
);
}
paint.fillRect(0, lineHeight() * currentViewLine, xEnd - xStart, lineHeight(), currentLineColor);
}
}
