#include "rendering/render_canvas.h"
#include "rendering/render_text.h"
#include "rendering/break_lines.h"
#include "xml/dom_nodeimpl.h"
#include "xml/dom_docimpl.h"
#include "render_arena.h"
#include "misc/loader.h"
#include <qpainter.h>
#include <kdebug.h>
#include <assert.h>
using namespace khtml;
using namespace DOM;
#ifndef NDEBUG
static bool inInlineTextBoxDetach;
#endif
void InlineTextBox::detach(RenderArena* renderArena)
{
#ifndef NDEBUG
inInlineTextBoxDetach = true;
#endif
delete this;
#ifndef NDEBUG
inInlineTextBoxDetach = false;
#endif
renderArena->free(*(size_t *)this, this);
}
void* InlineTextBox::operator new(size_t sz, RenderArena* renderArena) throw()
{
return renderArena->allocate(sz);
}
void InlineTextBox::operator delete(void* ptr, size_t sz)
{
assert(inInlineTextBoxDetach);
*(size_t *)ptr = sz;
}
void InlineTextBox::paintSelection(const Font *f, RenderText *text, QPainter *p, RenderStyle* style, int tx, int ty, int startPos, int endPos)
{
if(startPos > m_len) return;
if(startPos < 0) startPos = 0;
p->save();
#if APPLE_CHANGES
QColor textColor = style->color();
QColor c = p->selectedTextBackgroundColor();
if (textColor == c)
c = QColor(0xff - c.red(), 0xff - c.green(), 0xff - c.blue());
RenderStyle* pseudoStyle = object()->getPseudoStyle(RenderStyle::SELECTION);
if (pseudoStyle && pseudoStyle->backgroundColor().isValid())
c = pseudoStyle->backgroundColor();
p->setPen(c);
#else
QColor c = style->color();
p->setPen(QColor(0xff-c.red(),0xff-c.green(),0xff-c.blue()));
#endif
ty += m_baseline;
#if APPLE_CHANGES
f->drawHighlightForText(p, m_x + tx, m_y + ty, text->str->s, text->str->l, m_start, m_len,
m_toAdd, m_reversed ? QPainter::RTL : QPainter::LTR, style->visuallyOrdered(), startPos, endPos, c);
#else
f->drawHighlightForText(p, m_x + tx, m_y + ty, text->str->s, text->str->l, m_start, m_len,
m_toAdd, m_reversed ? QPainter::RTL : QPainter::LTR, startPos, endPos, c);
#endif
p->restore();
}
#ifdef APPLE_CHANGES
void InlineTextBox::paintDecoration( QPainter *pt, int _tx, int _ty, int deco)
{
_tx += m_x;
_ty += m_y;
QColor underline, overline, linethrough;
object()->getTextDecorationColors(deco, underline, overline, linethrough, true);
if (deco & UNDERLINE) {
pt->setPen(underline);
pt->drawLineForText(_tx, _ty, m_baseline, m_width);
}
if (deco & OVERLINE) {
pt->setPen(overline);
pt->drawLineForText(_tx, _ty, 0, m_width);
}
if (deco & LINE_THROUGH) {
pt->setPen(linethrough);
pt->drawLineForText(_tx, _ty, 2*m_baseline/3, m_width);
}
}
#else
void InlineTextBox::paintDecoration( QPainter *pt, int _tx, int _ty, int decoration)
{
_tx += m_x;
_ty += m_y;
int width = m_width - 1;
QColor underline, overline, linethrough;
object()->getTextDecorationColors(decoration, underline, overline, linethrough, true);
int underlineOffset = ( pt->fontMetrics().height() + m_baseline ) / 2;
if(underlineOffset <= m_baseline) underlineOffset = m_baseline+1;
if(deco & UNDERLINE){
pt->setPen(underline);
pt->drawLine(_tx, _ty + underlineOffset, _tx + width, _ty + underlineOffset );
}
if (deco & OVERLINE) {
pt->setPen(overline);
pt->drawLine(_tx, _ty, _tx + width, _ty );
}
if(deco & LINE_THROUGH) {
pt->setPen(linethrough);
pt->drawLine(_tx, _ty + 2*m_baseline/3, _tx + width, _ty + 2*m_baseline/3 );
}
}
#endif
#define LOCAL_WIDTH_BUF_SIZE 1024
FindSelectionResult InlineTextBox::checkSelectionPoint(int _x, int _y, int _tx, int _ty, const Font *f, RenderText *text, int & offset, short lineHeight)
{
offset = 0;
if ( _y < _ty + m_y )
return SelectionPointBefore;
if ( _y > _ty + m_y + m_height ) {
offset = m_len;
return SelectionPointAfter;
}
if ( _x > _tx + m_x + m_width ) {
return m_reversed ? SelectionPointBeforeInLine : SelectionPointAfterInLine;
}
if ( _x < _tx + m_x ) {
return m_reversed ? SelectionPointAfterInLine : SelectionPointBeforeInLine;
}
#if APPLE_CHANGES
int pos = f->checkSelectionPoint (text->str->s, text->str->l, m_start, m_len, m_toAdd, _x - (_tx + m_x), m_reversed);
#else
int delta = _x - (_tx + m_x);
int pos = 0;
if ( m_reversed ) {
delta -= m_width;
while(pos < m_len) {
int w = f->width( text->str->s, text->str->l, m_start + pos);
int w2 = w/2;
w -= w2;
delta += w2;
if(delta >= 0) break;
pos++;
delta += w;
}
} else {
while(pos < m_len) {
int w = f->width( text->str->s, text->str->l, m_start + pos);
int w2 = w/2;
w -= w2;
delta -= w2;
if(delta <= 0) break;
pos++;
delta -= w;
}
}
#endif
offset = pos;
return SelectionPointInside;
}
InlineTextBoxArray::InlineTextBoxArray()
{
setAutoDelete(false);
}
int InlineTextBoxArray::compareItems( Item d1, Item d2 )
{
assert(d1);
assert(d2);
return static_cast<InlineTextBox*>(d1)->m_y - static_cast<InlineTextBox*>(d2)->m_y;
}
int InlineTextBoxArray::findFirstMatching(Item d) const
{
int len = count();
if ( !len )
return -1;
if ( !d )
return -1;
int n1 = 0;
int n2 = len - 1;
int mid = 0;
bool found = FALSE;
while ( n1 <= n2 ) {
int res;
mid = (n1 + n2)/2;
if ( (*this)[mid] == 0 ) res = -1;
else
res = ((QGVector*)this)->compareItems( d, (*this)[mid] );
if ( res < 0 )
n2 = mid - 1;
else if ( res > 0 )
n1 = mid + 1;
else { found = TRUE;
break;
}
}
while ( found && (mid > 0) && !((QGVector*)this)->compareItems(d, (*this)[mid-1]) )
mid--;
return mid;
}
RenderText::RenderText(DOM::NodeImpl* node, DOMStringImpl *_str)
: RenderObject(node)
{
setRenderText();
m_minWidth = -1;
m_maxWidth = -1;
#ifdef APPLE_CHANGES
m_monospaceCharacterWidth = 0;
m_allAsciiChecked = false;
m_allAscii = false;
#endif
str = _str;
if (str) {
str = str->replace('\\', backslashAsCurrencySymbol());
str->ref();
}
KHTMLAssert(!str || !str->l || str->s);
m_selectionState = SelectionNone;
#ifdef DEBUG_LAYOUT
QConstString cstr(str->s, str->l);
kdDebug( 6040 ) << "RenderText ctr( "<< cstr.string().length() << " ) '" << cstr.string() << "'" << endl;
#endif
}
void RenderText::setStyle(RenderStyle *_style)
{
if ( style() != _style ) {
bool needToTransformText = (!style() && _style->textTransform() != TTNONE) ||
(style() && style()->textTransform() != _style->textTransform());
RenderObject::setStyle( _style );
m_lineHeight = RenderObject::lineHeight(false);
if (needToTransformText) {
DOM::DOMStringImpl* textToTransform = originalString();
if (textToTransform)
setText(textToTransform, true);
}
#if APPLE_CHANGES
else
cacheWidths();
#endif
}
}
RenderText::~RenderText()
{
if(str) str->deref();
}
void RenderText::detach()
{
deleteRuns();
RenderObject::detach();
}
void RenderText::deleteRuns()
{
unsigned int len = m_lines.size();
if (len) {
RenderArena* arena = renderArena();
for(unsigned int i=0; i < len; i++) {
InlineTextBox* s = m_lines.at(i);
if (s)
s->detach(arena);
m_lines.remove(i);
}
}
KHTMLAssert(m_lines.count() == 0);
}
bool RenderText::isTextFragment() const
{
return false;
}
DOM::DOMStringImpl* RenderText::originalString() const
{
return element() ? element()->string() : 0;
}
void RenderText::absoluteRects(QValueList<QRect>& rects, int _tx, int _ty)
{
for (unsigned int i = 0; i < m_lines.count(); i++)
rects.append(QRect(_tx + m_lines[i]->xPos(),
_ty + m_lines[i]->yPos(),
m_lines[i]->width(),
m_lines[i]->height()));
}
InlineTextBox * RenderText::findNextInlineTextBox( int offset, int &pos )
{
if ( m_lines.isEmpty() )
return 0L;
InlineTextBox* s = m_lines[0];
uint si = 1;
int off = s->m_len;
while(offset > off && si < m_lines.count())
{
s = m_lines[si++];
off = s->m_start + s->m_len;
}
pos = (offset > off ? s->m_len : s->m_len - (off - offset) );
return s;
}
bool RenderText::nodeAtPoint(NodeInfo& info, int _x, int _y, int _tx, int _ty,
HitTestAction hitTestAction, bool inside)
{
assert(parent());
InlineTextBox *s = m_lines.count() ? m_lines[0] : 0;
int si = 0;
while(s) {
if((_y >=_ty + s->m_y) && (_y < _ty + s->m_y + s->height()) &&
(_x >= _tx + s->m_x) && (_x <_tx + s->m_x + s->m_width) ) {
inside = true;
break;
}
s = si < (int) m_lines.count()-1 ? m_lines[++si] : 0;
}
if (inside && element()) {
if (info.innerNode() && info.innerNode()->renderer() &&
!info.innerNode()->renderer()->isInline()) {
info.setInnerNode(element());
info.setInnerNonSharedNode(0);
info.setURLElement(0);
}
if (!info.innerNode())
info.setInnerNode(element());
if (!info.innerNonSharedNode())
info.setInnerNonSharedNode(element());
}
return inside;
}
FindSelectionResult RenderText::checkSelectionPointIgnoringContinuations(int _x, int _y, int _tx, int _ty, DOM::NodeImpl*& node, int &offset)
{
InlineTextBox *lastPointAfterInline=0;
for(unsigned int si = 0; si < m_lines.count(); si++)
{
InlineTextBox* s = m_lines[si];
int result;
const Font *f = htmlFont( si==0 );
result = s->checkSelectionPoint(_x, _y, _tx, _ty, f, this, offset, m_lineHeight);
if ( result == SelectionPointInside ) {
offset += s->m_start; node = element();
return SelectionPointInside;
} else if ( result == SelectionPointBefore ) {
if ( si > 0 && lastPointAfterInline ) {
offset = lastPointAfterInline->m_start + lastPointAfterInline->m_len;
node = element();
return SelectionPointInside;
} else {
offset = 0;
node = element();
return SelectionPointBefore;
}
} else if ( result == SelectionPointAfterInLine ) {
lastPointAfterInline = s;
}
}
offset = str->l;
node = element();
return SelectionPointAfter;
}
void RenderText::cursorPos(int offset, int &_x, int &_y, int &height)
{
if (!m_lines.count()) {
_x = _y = height = -1;
return;
}
int pos;
InlineTextBox * s = findNextInlineTextBox( offset, pos );
_y = s->m_y;
height = s->m_height;
const QFontMetrics &fm = metrics( s->m_firstLine );
QString tekst(str->s + s->m_start, s->m_len);
_x = s->m_x + (fm.boundingRect(tekst, pos)).right();
if(pos)
_x += fm.rightBearing( *(str->s + s->m_start + pos - 1 ) );
int absx, absy;
absolutePosition(absx,absy);
_x += absx;
_y += absy;
}
void RenderText::posOfChar(int chr, int &x, int &y)
{
absolutePosition( x, y, false );
int pos;
InlineTextBox * s = findNextInlineTextBox( chr, pos );
if ( s )
{
x += s->m_x; y += s->m_y;
}
}
int RenderText::rightmostPosition() const
{
if (style()->whiteSpace() != NORMAL)
return maxWidth();
return 0;
}
static int
simpleDifferenceBetweenColors(QColor c1, QColor c2)
{
return abs(c1.red() - c2.red()) + abs(c1.green() - c2.green()) + abs(c1.blue() - c2.blue());
}
static QColor
correctedTextColor(QColor textColor, QColor backgroundColor)
{
int d = simpleDifferenceBetweenColors(textColor, backgroundColor);
if (d > 255) {
return textColor;
}
int distanceFromWhite = simpleDifferenceBetweenColors(textColor, Qt::white);
int distanceFromBlack = simpleDifferenceBetweenColors(textColor, Qt::black);
if (distanceFromWhite < distanceFromBlack) {
return textColor.dark();
}
return textColor.light();
}
void RenderText::paintObject(QPainter *p, int , int y, int , int h,
int tx, int ty, PaintAction paintAction)
{
RenderStyle* pseudoStyle = style(true);
if (pseudoStyle == style()) pseudoStyle = 0;
int d = style()->textDecorationsInEffect();
InlineTextBox f(0, y-ty);
int si = m_lines.findFirstMatching(&f);
bool isPrinting = (p->device()->devType() == QInternal::Printer);
if(si >= 0)
{
while(si > 0 && m_lines[si-1]->checkVerticalPoint(y, ty, h))
si--;
int endPos, startPos;
if (!isPrinting && (selectionState() != SelectionNone)) {
if (selectionState() == SelectionInside) {
startPos = 0;
endPos = str->l;
} else {
selectionStartEnd(startPos, endPos);
if(selectionState() == SelectionStart)
endPos = str->l;
else if(selectionState() == SelectionEnd)
startPos = 0;
}
}
InlineTextBox* s;
const Font *font = &style()->htmlFont();
#if APPLE_CHANGES
bool haveSelection = startPos != endPos && !isPrinting && selectionState() != SelectionNone;
if (!haveSelection && paintAction == PaintActionSelection) {
return;
}
int startLine = si;
for (int pass = 0; pass < (haveSelection ? 2 : 1); pass++) {
si = startLine;
bool drawSelectionBackground = haveSelection && pass == 0 && paintAction != PaintActionSelection;
bool drawText = !haveSelection || pass == 1;
#endif
do {
s = m_lines[si];
if (isPrinting)
{
if (ty+s->m_y < y)
{
continue;
}
if (ty+s->m_y+s->height() > y+h)
{
RenderCanvas* canvasObj = canvas();
if (ty+s->m_y < canvasObj->truncatedAt())
#if APPLE_CHANGES
canvasObj->setBestTruncatedAt(ty+s->m_y, this);
#else
canvasObj->setTruncatedAt(ty+s->m_y);
#endif
break;
}
}
RenderStyle* _style = pseudoStyle && s->m_firstLine ? pseudoStyle : style();
if (_style->font() != p->font())
p->setFont(_style->font());
font = &_style->htmlFont();
#if APPLE_CHANGES
if (drawText) {
#endif
QColor textColor = _style->color();
if (_style->shouldCorrectTextColor()) {
textColor = correctedTextColor(textColor, _style->backgroundColor());
}
if(textColor != p->pen().color())
p->setPen(textColor);
#if APPLE_CHANGES
bool setShadow = false;
if (_style->textShadow()) {
p->setShadow(_style->textShadow()->x, _style->textShadow()->y,
_style->textShadow()->blur, _style->textShadow()->color);
setShadow = true;
}
#endif
if (s->m_len > 0) {
bool paintSelectedTextOnly = (paintAction == PaintActionSelection);
bool paintSelectedTextSeparately = false; QColor selectionColor = p->pen().color();
ShadowData* selectionTextShadow = 0;
if (haveSelection) {
RenderStyle* pseudoStyle = getPseudoStyle(RenderStyle::SELECTION);
if (pseudoStyle) {
if (pseudoStyle->color() != selectionColor || pseudoStyle->textShadow()) {
if (!paintSelectedTextOnly)
paintSelectedTextSeparately = true;
if (pseudoStyle->color() != selectionColor)
selectionColor = pseudoStyle->color();
if (pseudoStyle->textShadow())
selectionTextShadow = pseudoStyle->textShadow();
}
}
}
if (!paintSelectedTextOnly && !paintSelectedTextSeparately) {
#if APPLE_CHANGES
font->drawText(p, s->m_x + tx, s->m_y + ty + s->m_baseline,
str->s, str->l, s->m_start, s->m_len,
s->m_toAdd, s->m_reversed ? QPainter::RTL : QPainter::LTR, style()->visuallyOrdered());
#else
font->drawText(p, s->m_x + tx, s->m_y + ty + s->m_baseline,
str->s, str->l, s->m_start, s->m_len,
s->m_toAdd, s->m_reversed ? QPainter::RTL : QPainter::LTR);
#endif
}
else {
int offset = s->m_start;
int sPos = QMAX( startPos - offset, 0 );
int ePos = QMIN( endPos - offset, s->m_len );
if (paintSelectedTextSeparately) {
if (sPos >= ePos)
#if APPLE_CHANGES
font->drawText(p, s->m_x + tx, s->m_y + ty + s->m_baseline,
str->s, str->l, s->m_start, s->m_len,
s->m_toAdd, s->m_reversed ? QPainter::RTL : QPainter::LTR, style()->visuallyOrdered());
#else
font->drawText(p, s->m_x + tx, s->m_y + ty + s->m_baseline,
str->s, str->l, s->m_start, s->m_len,
s->m_toAdd, s->m_reversed ? QPainter::RTL : QPainter::LTR);
#endif
else {
if (sPos-1 >= 0)
#if APPLE_CHANGES
font->drawText(p, s->m_x + tx, s->m_y + ty + s->m_baseline, str->s,
str->l, s->m_start, s->m_len,
s->m_toAdd, s->m_reversed ? QPainter::RTL : QPainter::LTR, style()->visuallyOrdered(), 0, sPos);
#else
font->drawText(p, s->m_x + tx, s->m_y + ty + s->m_baseline, str->s,
str->l, s->m_start, s->m_len,
s->m_toAdd, s->m_reversed ? QPainter::RTL : QPainter::LTR, 0, sPos);
#endif
if (ePos < s->m_start+s->m_len)
#if APPLE_CHANGES
font->drawText(p, s->m_x + tx, s->m_y + ty + s->m_baseline, str->s,
str->l, s->m_start, s->m_len,
s->m_toAdd, s->m_reversed ? QPainter::RTL : QPainter::LTR, style()->visuallyOrdered(), ePos, -1);
#else
font->drawText(p, s->m_x + tx, s->m_y + ty + s->m_baseline, str->s,
str->l, s->m_start, s->m_len,
s->m_toAdd, s->m_reversed ? QPainter::RTL : QPainter::LTR, ePos, -1);
#endif
}
}
if ( sPos < ePos ) {
if (selectionColor != p->pen().color())
p->setPen(selectionColor);
#if APPLE_CHANGES
if (selectionTextShadow)
p->setShadow(selectionTextShadow->x,
selectionTextShadow->y,
selectionTextShadow->blur,
selectionTextShadow->color);
#endif
#if APPLE_CHANGES
font->drawText(p, s->m_x + tx, s->m_y + ty + s->m_baseline, str->s,
str->l, s->m_start, s->m_len,
s->m_toAdd, s->m_reversed ? QPainter::RTL : QPainter::LTR, style()->visuallyOrdered(), sPos, ePos);
#else
font->drawText(p, s->m_x + tx, s->m_y + ty + s->m_baseline, str->s,
str->l, s->m_start, s->m_len,
s->m_toAdd, s->m_reversed ? QPainter::RTL : QPainter::LTR, sPos, ePos);
#endif
#if APPLE_CHANGES
if (selectionTextShadow)
p->clearShadow();
#endif
}
}
}
if (d != TDNONE && paintAction == PaintActionForeground &&
style()->htmlHacks()) {
p->setPen(_style->color());
s->paintDecoration(p, tx, ty, d);
}
#if APPLE_CHANGES
if (setShadow)
p->clearShadow();
} #endif
#if APPLE_CHANGES
if (drawSelectionBackground)
#endif
if (!isPrinting && (selectionState() != SelectionNone))
{
int offset = s->m_start;
int sPos = QMAX( startPos - offset, 0 );
int ePos = QMIN( endPos - offset, s->m_len );
if ( sPos < ePos )
s->paintSelection(font, this, p, _style, tx, ty, sPos, ePos);
}
#ifdef BIDI_DEBUG
{
int h = lineHeight( false ) + paddingTop() + paddingBottom() + borderTop() + borderBottom();
QColor c2 = QColor("#0000ff");
drawBorder(p, tx, ty, tx+1, ty + h,
RenderObject::BSLeft, c2, c2, SOLID, 1, 1);
drawBorder(p, tx + s->m_width, ty, tx + s->m_width + 1, ty + h,
RenderObject::BSRight, c2, c2, SOLID, 1, 1);
}
#endif
} while (++si < (int)m_lines.count() && m_lines[si]->checkVerticalPoint(y, ty, h));
#if APPLE_CHANGES
} #endif
}
}
void RenderText::paint(QPainter *p, int x, int y, int w, int h,
int tx, int ty, PaintAction paintAction)
{
if (paintAction != PaintActionForeground && paintAction != PaintActionSelection)
return;
if (style()->visibility() != VISIBLE)
return;
int s = m_lines.count() - 1;
if ( s < 0 )
return;
if (ty + m_lines[0]->yPos() > y + h) return;
if (ty + m_lines[s]->yPos() + m_lines[s]->height() < y ) return;
paintObject(p, x, y, w, h, tx, ty, paintAction);
}
#ifdef APPLE_CHANGES
bool RenderText::allAscii() const
{
if (m_allAsciiChecked)
return m_allAscii;
m_allAsciiChecked = true;
unsigned int i;
for (i = 0; i < str->l; i++){
if (str->s[i].unicode() >= 0x7f){
m_allAscii = false;
return m_allAscii;
}
}
m_allAscii = true;
return m_allAscii;
}
bool RenderText::shouldUseMonospaceCache(const Font *f) const
{
return (f && f->isFixedPitch() && allAscii() && !style()->htmlFont().isSmallCaps());
}
void RenderText::cacheWidths()
{
const Font *f = htmlFont( false );
if (shouldUseMonospaceCache(f)){
float fw;
QChar c(' ');
f->floatCharacterWidths( &c, 1, 0, 1, 0, &fw);
m_monospaceCharacterWidth = (int)fw;
}
else
m_monospaceCharacterWidth = 0;
}
inline int RenderText::widthFromCache(const Font *f, int start, int len) const
{
if (m_monospaceCharacterWidth != 0){
int i, w = 0;
for (i = start; i < start+len; i++){
int dir = str->s[i].direction();
if (dir != QChar::DirNSM && dir != QChar::DirBN)
w += m_monospaceCharacterWidth;
}
return w;
}
return f->width(str->s, str->l, start, len);
}
#ifdef XXX
inline int RenderText::widthFromCache(const Font *f, int start, int len) const
{
if (m_monospaceCharacterWidth != 0){
return len * m_monospaceCharacterWidth;
}
return f->width(str->s, str->l, start, len);
}
#endif
#endif
void RenderText::trimmedMinMaxWidth(short& beginMinW, bool& beginWS,
short& endMinW, bool& endWS,
bool& hasBreakableChar, bool& hasBreak,
short& beginMaxW, short& endMaxW,
short& minW, short& maxW, bool& stripFrontSpaces)
{
bool isPre = style()->whiteSpace() == PRE;
if (isPre)
stripFrontSpaces = false;
int len = str->l;
if (len == 0 || (stripFrontSpaces && str->containsOnlyWhitespace())) {
maxW = 0;
hasBreak = false;
return;
}
minW = m_minWidth;
maxW = m_maxWidth;
beginWS = stripFrontSpaces ? false : m_hasBeginWS;
endWS = m_hasEndWS;
beginMinW = m_beginMinWidth;
endMinW = m_endMinWidth;
hasBreakableChar = m_hasBreakableChar;
hasBreak = m_hasBreak;
if (stripFrontSpaces && (str->s[0] == ' ' || (!isPre && str->s[0] == '\n'))) {
const Font *f = htmlFont( false );
QChar space[1]; space[0] = ' ';
int spaceWidth = f->width(space, 1, 0);
maxW -= spaceWidth;
}
stripFrontSpaces = !isPre && m_hasEndWS;
if (style()->whiteSpace() == NOWRAP)
minW = maxW;
else if (minW > maxW)
minW = maxW;
if (hasBreak) {
const Font *f = htmlFont( false );
bool firstLine = true;
beginMaxW = endMaxW = maxW;
for (int i = 0; i < len; i++)
{
int linelen = 0;
while (i+linelen < len && str->s[i+linelen] != '\n')
linelen++;
if (linelen)
{
#if !APPLE_CHANGES
endMaxW = f->width(str->s, str->l, i, linelen);
#else
endMaxW = widthFromCache(f, i, linelen);
#endif
if (firstLine) {
firstLine = false;
beginMaxW = endMaxW;
}
i += linelen;
}
else if (firstLine) {
beginMaxW = 0;
firstLine = false;
}
if (i == len-1)
endMaxW = 0;
}
}
}
void RenderText::calcMinMaxWidth()
{
KHTMLAssert( !minMaxKnown() );
m_minWidth = m_beginMinWidth = m_endMinWidth = 0;
m_maxWidth = 0;
if (isBR())
return;
int currMinWidth = 0;
int currMaxWidth = 0;
m_hasBreakableChar = m_hasBreak = m_hasBeginWS = m_hasEndWS = false;
const Font *f = htmlFont( false );
int wordSpacing = style()->wordSpacing();
int len = str->l;
bool ignoringSpaces = false;
bool isSpace = false;
bool isPre = style()->whiteSpace() == PRE;
bool firstWord = true;
bool firstLine = true;
for(int i = 0; i < len; i++)
{
const QChar c = str->s[i];
bool previousCharacterIsSpace = isSpace;
bool isNewline = false;
if (c == '\n') {
if (isPre) {
m_hasBreak = true;
isNewline = true;
isSpace = false;
}
else
isSpace = true;
} else {
isSpace = c == ' ';
}
if ((isSpace || isNewline) && i == 0)
m_hasBeginWS = true;
if ((isSpace || isNewline) && i == len-1)
m_hasEndWS = true;
if (!ignoringSpaces && !isPre && previousCharacterIsSpace && isSpace)
ignoringSpaces = true;
if (ignoringSpaces && !isSpace)
ignoringSpaces = false;
if (ignoringSpaces)
continue;
int wordlen = 0;
while (i+wordlen < len && str->s[i+wordlen] != '\n' && str->s[i+wordlen] != ' ' &&
(wordlen == 0 || !isBreakable( str->s, i+wordlen, str->l)))
wordlen++;
if (wordlen)
{
#if !APPLE_CHANGES
int w = f->width(str->s, str->l, i, wordlen);
#else
int w = widthFromCache(f, i, wordlen);
#endif
currMinWidth += w;
currMaxWidth += w;
bool isBreakableCharSpace = (i+wordlen < len) ? ((!isPre && str->s[i+wordlen] == '\n') ||
str->s[i+wordlen] == ' ') : false;
if (i+wordlen < len && style()->whiteSpace() == NORMAL)
m_hasBreakableChar = true;
if (wordSpacing && isBreakableCharSpace && !containsOnlyWhitespace(i+wordlen, len-(i+wordlen)))
currMaxWidth += wordSpacing;
if (firstWord) {
firstWord = false;
bool hasBreak = isBreakable(str->s, i, str->l);
if (hasBreak)
m_hasBreakableChar = true;
m_beginMinWidth = hasBreak ? 0 : w;
}
m_endMinWidth = w;
if (currMinWidth > m_minWidth) m_minWidth = currMinWidth;
currMinWidth = 0;
i += wordlen-1;
}
else {
if (style()->whiteSpace() == NORMAL || isNewline)
m_hasBreakableChar = true;
if (currMinWidth > m_minWidth) m_minWidth = currMinWidth;
currMinWidth = 0;
if (isNewline) {
if (firstLine) {
firstLine = false;
m_beginMinWidth = currMaxWidth;
}
if (currMaxWidth > m_maxWidth) m_maxWidth = currMaxWidth;
currMaxWidth = 0;
}
else
{
currMaxWidth += f->width( str->s, str->l, i + wordlen );
}
}
}
if(currMinWidth > m_minWidth) m_minWidth = currMinWidth;
if(currMaxWidth > m_maxWidth) m_maxWidth = currMaxWidth;
if (style()->whiteSpace() != NORMAL)
m_minWidth = m_maxWidth;
if (isPre) {
if (firstLine)
m_beginMinWidth = m_maxWidth;
m_endMinWidth = currMaxWidth;
}
setMinMaxKnown();
}
bool RenderText::containsOnlyWhitespace(unsigned int from, unsigned int len) const
{
unsigned int currPos;
for (currPos = from;
currPos < from+len && (str->s[currPos] == '\n' || str->s[currPos].unicode() == ' ');
currPos++);
return currPos >= (from+len);
}
int RenderText::minXPos() const
{
if (!m_lines.count())
return 0;
int retval=6666666;
for (unsigned i=0;i < m_lines.count(); i++)
{
retval = QMIN ( retval, m_lines[i]->m_x);
}
return retval;
}
int RenderText::xPos() const
{
if (m_lines.count())
return m_lines[0]->m_x;
else
return 0;
}
int RenderText::yPos() const
{
if (m_lines.count())
return m_lines[0]->m_y;
else
return 0;
}
const QFont &RenderText::font()
{
return style()->font();
}
void RenderText::setText(DOMStringImpl *text, bool force)
{
#if APPLE_CHANGES
if (!text)
return;
#endif
if( !force && str == text ) return;
if(str) str->deref();
str = text;
if (str) {
str = str->replace('\\', backslashAsCurrencySymbol());
if ( style() ) {
switch(style()->textTransform()) {
case CAPITALIZE: str = str->capitalize(); break;
case UPPERCASE: str = str->upper(); break;
case LOWERCASE: str = str->lower(); break;
case NONE:
default:;
}
}
str->ref();
}
#if APPLE_CHANGES
cacheWidths();
#endif
KHTMLAssert(!isBR() || (str->l == 1 && (*str->s) == '\n'));
KHTMLAssert(!str->l || str->s);
setNeedsLayout(true);
#ifdef BIDI_DEBUG
QConstString cstr(str->s, str->l);
kdDebug( 6040 ) << "RenderText::setText( " << cstr.string().length() << " ) '" << cstr.string() << "'" << endl;
#endif
}
int RenderText::height() const
{
int retval = 0;
if ( m_lines.count() )
retval = m_lines[m_lines.count()-1]->m_y + m_lineHeight - m_lines[0]->m_y;
return retval;
}
short RenderText::lineHeight( bool firstLine, bool ) const
{
if ( firstLine )
return RenderObject::lineHeight( firstLine );
return m_lineHeight;
}
short RenderText::baselinePosition( bool firstLine, bool ) const
{
const QFontMetrics &fm = metrics( firstLine );
return fm.ascent() +
( lineHeight( firstLine ) - fm.height() ) / 2;
}
InlineBox* RenderText::createInlineBox(bool, bool isRootLineBox)
{
KHTMLAssert(!isRootLineBox);
return new (renderArena()) InlineTextBox(this);
}
void RenderText::position(InlineBox* box, int from, int len, bool reverse)
{
InlineTextBox *s = static_cast<InlineTextBox*>(box);
if (len == 0 || isBR()) {
s->detach(renderArena());
return;
}
reverse = reverse && !style()->visuallyOrdered();
#ifdef DEBUG_LAYOUT
QChar *ch = str->s+from;
QConstString cstr(ch, len);
qDebug("setting run text to *%s*, len=%d, w)=%d" , cstr.string().latin1(), len, width );#endif
s->m_reversed = reverse;
s->m_start = from;
s->m_len = len;
if(m_lines.count() == m_lines.size())
m_lines.resize(m_lines.size()*2+1);
m_lines.insert(m_lines.count(), s);
}
unsigned int RenderText::width(unsigned int from, unsigned int len, bool firstLine) const
{
if(!str->s || from > str->l ) return 0;
if ( from + len > str->l ) len = str->l - from;
const Font *f = htmlFont( firstLine );
return width( from, len, f );
}
unsigned int RenderText::width(unsigned int from, unsigned int len, const Font *f) const
{
if(!str->s || from > str->l ) return 0;
if ( from + len > str->l ) len = str->l - from;
int w;
if ( f == &style()->htmlFont() && from == 0 && len == str->l )
w = m_maxWidth;
#if APPLE_CHANGES
else if (f == &style()->htmlFont())
w = widthFromCache (f, from, len);
#endif
else
w = f->width(str->s, str->l, from, len );
return w;
}
short RenderText::width() const
{
int w;
int minx = 100000000;
int maxx = 0;
for(unsigned int si = 0; si < m_lines.count(); si++) {
InlineTextBox* s = m_lines[si];
if(s->m_x < minx)
minx = s->m_x;
if(s->m_x + s->m_width > maxx)
maxx = s->m_x + s->m_width;
}
w = QMAX(0, maxx-minx);
return w;
}
QRect RenderText::getAbsoluteRepaintRect()
{
RenderObject *cb = containingBlock();
return cb->getAbsoluteRepaintRect();
}
bool RenderText::isFixedWidthFont() const
{
return QFontInfo(style()->font()).fixedPitch();
}
short RenderText::verticalPositionHint( bool firstLine ) const
{
return parent()->verticalPositionHint( firstLine );
}
const QFontMetrics &RenderText::metrics(bool firstLine) const
{
return style(firstLine)->fontMetrics();
}
const Font *RenderText::htmlFont(bool firstLine) const
{
return &style(firstLine)->htmlFont();
}
RenderTextFragment::RenderTextFragment(DOM::NodeImpl* _node, DOM::DOMStringImpl* _str,
int startOffset, int endOffset)
:RenderText(_node, _str->substring(startOffset, endOffset)),
m_start(startOffset), m_end(endOffset), m_generatedContentStr(0)
{}
RenderTextFragment::RenderTextFragment(DOM::NodeImpl* _node, DOM::DOMStringImpl* _str)
:RenderText(_node, _str), m_start(0)
{
m_generatedContentStr = _str;
if (_str) {
_str->ref();
m_end = _str->l;
}
else
m_end = 0;
}
RenderTextFragment::~RenderTextFragment()
{
if (m_generatedContentStr)
m_generatedContentStr->deref();
}
bool RenderTextFragment::isTextFragment() const
{
return true;
}
DOM::DOMStringImpl* RenderTextFragment::originalString() const
{
DOM::DOMStringImpl* result = 0;
if (element())
result = element()->string();
else
result = contentString();
if (result && (start() > 0 || start() < result->l))
result = result->substring(start(), end());
return result;
}
#undef BIDI_DEBUG
#undef DEBUG_LAYOUT