/** * This file is part of the DOM implementation for KDE. * * Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org) * (C) 2000-2003 Dirk Mueller (mueller@kde.org) * (C) 2003 Apple Computer, Inc. * (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * */ //#define DEBUG_LAYOUT //#define BIDI_DEBUG #ifdef HAVE_CONFIG_H #include #endif #include "rendering/render_text.h" #include "rendering/render_canvas.h" #include "rendering/break_lines.h" #include "rendering/render_arena.h" #include "xml/dom_nodeimpl.h" #include "misc/loader.h" #include "misc/helper.h" #include #include #include #include #include #include #include #include #ifdef HAVE_ALLOCA_H // explicitly included for systems that don't provide it in stdlib.h #include #else #include #endif using namespace khtml; using namespace DOM; #ifndef NDEBUG static bool inInlineTextBoxDetach; #endif void InlineTextBox::detach(RenderArena* renderArena) { if (m_parent) m_parent->removeFromLine(this); #ifndef NDEBUG inInlineTextBoxDetach = true; #endif delete this; #ifndef NDEBUG inInlineTextBoxDetach = false; #endif // Recover the size left there for us by operator delete and free the memory. 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); // Stash size where detach can find it. *(size_t *)ptr = sz; } void InlineTextBox::selectionStartEnd(int& sPos, int& ePos) { int startPos, endPos; if (object()->selectionState() == RenderObject::SelectionInside) { startPos = 0; endPos = renderText()->string()->l; } else { renderText()->selectionStartEnd(startPos, endPos); if (object()->selectionState() == RenderObject::SelectionStart) endPos = renderText()->string()->l; else if (object()->selectionState() == RenderObject::SelectionEnd) startPos = 0; } sPos = kMax(startPos - m_start, 0); ePos = kMin(endPos - m_start, (int)m_len); } RenderObject::SelectionState InlineTextBox::selectionState() { RenderObject::SelectionState state = object()->selectionState(); if (state == RenderObject::SelectionStart || state == RenderObject::SelectionEnd || state == RenderObject::SelectionBoth) { int startPos, endPos; renderText()->selectionStartEnd(startPos, endPos); bool start = (state != RenderObject::SelectionEnd && startPos >= m_start && startPos < m_start + m_len); bool end = (state != RenderObject::SelectionStart && endPos > m_start && endPos <= m_start + m_len); if (start && end) state = RenderObject::SelectionBoth; else if (start) state = RenderObject::SelectionStart; else if (end) state = RenderObject::SelectionEnd; else if ((state == RenderObject::SelectionEnd || startPos < m_start) && (state == RenderObject::SelectionStart || endPos > m_start + m_len)) state = RenderObject::SelectionInside; } return state; } void InlineTextBox::paint(RenderObject::PaintInfo& i, int tx, int ty) { if (object()->isBR() || object()->style()->visibility() != VISIBLE || m_truncation == cFullTruncation || i.phase == PaintActionOutline) return; if (i.phase == PaintActionSelection && object()->selectionState() == RenderObject::SelectionNone) // When only painting the selection, don't bother to paint if there is none. return; int xPos = tx + m_x; int w = width(); if ((xPos >= i.r.x() + i.r.width()) || (xPos + w <= i.r.x())) return; // Set our font. RenderStyle* styleToUse = object()->style(m_firstLine); int d = styleToUse->textDecorationsInEffect(); if (styleToUse->font() != i.p->font()) i.p->setFont(styleToUse->font()); const Font *font = &styleToUse->htmlFont(); bool haveSelection = selectionState() != RenderObject::SelectionNone; // Now calculate startPos and endPos, for painting selection. // We paint selection while endPos > 0 int ePos = 0, sPos = 0; if (haveSelection && !object()->canvas()->staticMode()) { selectionStartEnd(sPos, ePos); } if (styleToUse->color() != i.p->pen().color()) i.p->setPen(styleToUse->color()); if (m_len > 0 && i.phase != PaintActionSelection) { int endPoint = m_len; if (m_truncation != cNoTruncation) endPoint = m_truncation - m_start; if (styleToUse->textShadow()) paintShadow(i.p, font, tx, ty, styleToUse->textShadow()); if (!haveSelection || sPos != 0 || ePos != m_len) { font->drawText(i.p, m_x + tx, m_y + ty + m_baseline, renderText()->string()->s, renderText()->string()->l, m_start, endPoint, m_toAdd, m_reversed ? TQPainter::RTL : TQPainter::LTR); } } if (d != TDNONE && i.phase != PaintActionSelection && styleToUse->htmlHacks()) { i.p->setPen(styleToUse->color()); paintDecoration(i.p, font, tx, ty, d); } if (haveSelection && i.phase == PaintActionSelection) { //kdDebug(6040) << this << " paintSelection with startPos=" << sPos << " endPos=" << ePos << endl; if ( sPos < ePos ) paintSelection(font, renderText(), i.p, styleToUse, tx, ty, sPos, ePos, d); } } /** returns the proper ::selection pseudo style for the given element * @return the style or 0 if no ::selection pseudo applies. */ inline const RenderStyle *retrieveSelectionPseudoStyle(const RenderObject *obj) { // http://www.w3.org/Style/CSS/Test/CSS3/Selectors/20021129/html/tests/css3-modsel-162.html // is of the opinion that ::selection of parent elements is also to be applied // to children, so let's do it. while (obj) { const RenderStyle *style = obj->style()->getPseudoStyle(RenderStyle::SELECTION); if (style) return style; obj = obj->parent(); }/*wend*/ return 0; } void InlineTextBox::paintSelection(const Font *f, RenderText *text, TQPainter *p, RenderStyle* style, int tx, int ty, int startPos, int endPos, int deco) { if(startPos > m_len) return; if(startPos < 0) startPos = 0; TQColor hc; TQColor hbg; const RenderStyle* pseudoStyle = retrieveSelectionPseudoStyle(text); if (pseudoStyle) { // ### support outline (mandated by CSS3) // ### support background-image? (optional by CSS3) if (pseudoStyle->backgroundColor().isValid()) hbg = pseudoStyle->backgroundColor(); hc = pseudoStyle->color(); } else { const TQColorGroup &grp = style->palette().active(); hc = grp.highlightedText(); hbg = grp.highlight(); // ### should be at most retrieved once per render text TQColor bg = khtml::retrieveBackgroundColor(text); // It may happen that the contrast is -- well -- virtually non existent. // In this case, simply swap the colors, thus in compliance with // NN4 (win32 only), IE, and Mozilla. if (!khtml::hasSufficientContrast(hbg, bg)) tqSwap(hc, hbg); } p->setPen(hc); //kdDebug( 6040 ) << "textRun::painting(" << TQConstString(text->str->s + m_start, m_len).string().left(30) << ") at(" << m_x+tx << "/" << m_y+ty << ")" << endl; const bool needClipping = startPos != 0 || endPos != m_len; if (needClipping) { p->save(); int visualSelectionStart = f->width(text->str->s, text->str->l, m_start, startPos, m_start, m_start + m_len, m_toAdd); int visualSelectionEnd = f->width(text->str->s, text->str->l, m_start, endPos, m_start, m_start + m_len, m_toAdd); int visualSelectionWidth = visualSelectionEnd - visualSelectionStart; if (m_reversed) { visualSelectionStart = f->width(text->str->s, text->str->l, m_start, m_len) - visualSelectionEnd; } TQRect selectionRect(m_x + tx + visualSelectionStart, m_y + ty, visualSelectionWidth, height()); TQRegion r(selectionRect); if (p->hasClipping()) r &= p->clipRegion(TQPainter::CoordPainter); p->setClipRegion(r, TQPainter::CoordPainter); } f->drawText(p, m_x + tx, m_y + ty + m_baseline, text->str->s, text->str->l, m_start, m_len, m_toAdd, m_reversed ? TQPainter::RTL : TQPainter::LTR, needClipping ? 0 : startPos, needClipping ? m_len : endPos, hbg, m_y + ty, height(), deco); if (needClipping) p->restore(); } void InlineTextBox::paintDecoration( TQPainter *pt, const Font *f, int _tx, int _ty, int deco) { _tx += m_x; _ty += m_y; if (m_truncation == cFullTruncation) return; int width = m_width - 1; if (m_truncation != cNoTruncation) { width = static_cast(m_object)->width(m_start, m_truncation - m_start, m_firstLine); } RenderObject *p = object(); TQColor underline, overline, linethrough; p->getTextDecorationColors(deco, underline, overline, linethrough, p->style()->htmlHacks()); if(deco & UNDERLINE){ pt->setPen(underline); f->drawDecoration(pt, _tx, _ty, baseline(), width, height(), Font::UNDERLINE); } if (deco & OVERLINE) { pt->setPen(overline); f->drawDecoration(pt, _tx, _ty, baseline(), width, height(), Font::OVERLINE); } if(deco & LINE_THROUGH) { pt->setPen(linethrough); f->drawDecoration(pt, _tx, _ty, baseline(), width, height(), Font::LINE_THROUGH); } // NO! Do NOT add BLINK! It is the most annouing feature of Netscape, and IE has a reason not to // support it. Lars } void InlineTextBox::paintShadow(TQPainter *pt, const Font *f, int _tx, int _ty, const ShadowData *shadow ) { int x = m_x + _tx + shadow->x; int y = m_y + _ty + shadow->y; const RenderText* text = renderText(); if (shadow->blur <= 0) { TQColor c = pt->pen().color(); pt->setPen(shadow->color); f->drawText(pt, x, y+m_baseline, text->str->s, text->str->l, m_start, m_len, m_toAdd, m_reversed ? TQPainter::RTL : TQPainter::LTR); pt->setPen(c); } else { const int thickness = shadow->blur; const int w = m_width+2*thickness; const int h = m_height+2*thickness; const TQRgb color = shadow->color.rgb(); const int gray = tqGray(color); const bool inverse = (gray < 100); const TQRgb bgColor = (inverse) ? tqRgb(255,255,255) : tqRgb(0,0,0); TQPixmap pixmap(w, h); pixmap.fill(bgColor); TQPainter p; p.begin(&pixmap); p.setPen(shadow->color); p.setFont(pt->font()); f->drawText(&p, thickness, thickness+m_baseline, text->str->s, text->str->l, m_start, m_len, m_toAdd, m_reversed ? TQPainter::RTL : TQPainter::LTR); p.end(); TQImage img = TQT_TQIMAGE_OBJECT(pixmap.convertToImage()).convertDepth(32); int md = thickness*thickness; // max-dist^2 // blur map (division cache) float *bmap = (float*)alloca(sizeof(float)*(md+1)); for(int n=0; n<=md; n++) { float f; f = n/(float)(md+1); f = 1.0 - f*f; bmap[n] = f; } float factor = 0.0; // maximal potential opacity-sum for(int n=-thickness; n<=thickness; n++) for(int m=-thickness; m<=thickness; m++) { int d = n*n+m*m; if (d<=md) factor += bmap[d]; } // arbitratry factor adjustment to make shadows solid. factor = factor/1.333; // alpha map float* amap = (float*)alloca(sizeof(float)*(h*w)); memset(amap, 0, h*w*(sizeof(float))); for(int j=thickness; jmd) continue; float f = bmap[d]; amap[(i+m)+(j+n)*w] += (g*f); } } } } TQImage res(w,h,32); res.setAlphaBuffer(true); int r = tqRed(color); int g = tqGreen(color); int b = tqBlue(color); // divide by factor factor = 1.0/factor; for(int j=0; j 255) a = 255; res.setPixel(i,j, tqRgba(r,g,b,a)); } } pt->drawImage(x-thickness, y-thickness, res, 0, 0, -1, -1, Qt::DiffuseAlphaDither | Qt::ColorOnly | Qt::PreferDither); } // Paint next shadow effect if (shadow->next) paintShadow(pt, f, _tx, _ty, shadow->next); } /** * Distributes pixels to justify text. * @param numSpaces spaces left, will be decremented by one * @param toAdd number of pixels left to be distributed, will have the * amount of pixels distributed during this call subtracted. * @return number of pixels to distribute */ static inline int justifyWidth(int &numSpaces, int &toAdd) { int a = 0; if ( numSpaces ) { a = toAdd/numSpaces; toAdd -= a; numSpaces--; }/*end if*/ return a; } FindSelectionResult InlineTextBox::checkSelectionPoint(int _x, int _y, int _tx, int _ty, const Font *f, RenderText *text, int & offset, short lineHeight) { // kdDebug(6040) << "InlineTextBox::checkSelectionPoint " << this << " _x=" << _x << " _y=" << _y // << " _tx+m_x=" << _tx+m_x << " _ty+m_y=" << _ty+m_y << endl; offset = 0; if ( _y < _ty + m_y ) return SelectionPointBefore; // above -> before if ( _y > _ty + m_y + lineHeight ) { // below -> after // Set the offset to the max offset = m_len; return SelectionPointAfter; } if ( _x > _tx + m_x + m_width ) { // to the right return SelectionPointAfterInLine; } // The Y matches, check if we're on the left if ( _x < _tx + m_x ) { return SelectionPointBeforeInLine; } // consider spacing for justified text int toAdd = m_toAdd; bool justified = text->style()->textAlign() == JUSTIFY && toAdd > 0; int numSpaces = 0; if (justified) { for( int i = 0; i < m_len; i++ ) if ( text->str->s[m_start+i].category() == TQChar::Separator_Space ) numSpaces++; }/*end if*/ int delta = _x - (_tx + m_x); //kdDebug(6040) << "InlineTextBox::checkSelectionPoint delta=" << delta << endl; 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); if (justified && text->str->s[m_start + pos].category() == TQChar::Separator_Space) w += justifyWidth(numSpaces, toAdd); 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); if (justified && text->str->s[m_start + pos].category() == TQChar::Separator_Space) w += justifyWidth(numSpaces, toAdd); int w2 = w/2; w -= w2; delta -= w2; if(delta <= 0) break; pos++; delta -= w; } } // kdDebug( 6040 ) << " Text --> inside at position " << pos << endl; offset = pos; return SelectionPointInside; } int InlineTextBox::offsetForPoint(int _x, int &ax) const { // Do binary search for finding out offset, saves some time for long // runs. int start = 0; int end = m_len; ax = m_x; int offset = (start + end) / 2; while (end - start > 0) { // always snap to the right column. This makes up for "jumpy" vertical // navigation. if (end - start == 1) start = end; offset = (start + end) / 2; ax = m_x + widthFromStart(offset); if (ax > _x) end = offset; else if (ax < _x) start = offset; else break; } return m_start + offset; } int InlineTextBox::widthFromStart(int pos) const { // gasp! sometimes pos is i < 0 which crashes Font::width pos = kMax(pos, 0); const RenderText *t = renderText(); Q_ASSERT(t->isText()); const Font *f = t->htmlFont(m_firstLine); const TQFontMetrics &fm = t->fontMetrics(m_firstLine); int numSpaces = 0; // consider spacing for justified text bool justified = t->style()->textAlign() == JUSTIFY; //kdDebug(6000) << "InlineTextBox::width(int)" << endl; if (justified && m_toAdd > 0) do { //kdDebug(6000) << "justify" << endl; // TQConstString cstr = TQConstString(t->str->s + m_start, m_len); for( int i = 0; i < m_len; i++ ) if ( t->str->s[m_start+i].category() == TQChar::Separator_Space ) numSpaces++; if (numSpaces == 0) break; int toAdd = m_toAdd; int w = 0; // accumulated width int start = 0; // start of non-space sequence int current = 0; // current position while (current < pos) { // add spacing while (current < pos && t->str->s[m_start + current].category() == TQChar::Separator_Space) { w += f->getWordSpacing(); w += f->getLetterSpacing(); w += justifyWidth(numSpaces, toAdd); w += fm.width(' '); // ### valid assumption? (LS) current++; start++; }/*wend*/ if (current >= pos) break; // seek next space while (current < pos && t->str->s[m_start + current].category() != TQChar::Separator_Space) current++; // check run without spaces if ( current > start ) { w += f->width(t->str->s + m_start, m_len, start, current - start); start = current; } } return w; } while(false);/*end if*/ //kdDebug(6000) << "default" << endl; // else use existing width function return f->width(t->str->s + m_start, m_len, 0, pos); } long InlineTextBox::minOffset() const { return m_start; } long InlineTextBox::maxOffset() const { return m_start + m_len; } int InlineTextBox::placeEllipsisBox(bool ltr, int blockEdge, int ellipsisWidth, bool& foundBox) { if (foundBox) { m_truncation = cFullTruncation; return -1; } int ellipsisX = ltr ? blockEdge - ellipsisWidth : blockEdge + ellipsisWidth; // For LTR, if the left edge of the ellipsis is to the left of our text run, then we are the run that will get truncated. if (ltr) { if (ellipsisX <= m_x) { // Too far. Just set full truncation, but return -1 and let the ellipsis just be placed at the edge of the box. m_truncation = cFullTruncation; foundBox = true; return -1; } if (ellipsisX < m_x + m_width) { if (m_reversed) return -1; // FIXME: Support LTR truncation when the last run is RTL someday. foundBox = true; int ax; int offset = offsetForPoint(ellipsisX, ax) - 1; if (offset <= m_start) { // No characters should be rendered. Set ourselves to full truncation and place the ellipsis at the min of our start // and the ellipsis edge. m_truncation = cFullTruncation; return kMin(ellipsisX, (int)m_x); } // Set the truncation index on the text run. The ellipsis needs to be placed just after the last visible character. m_truncation = offset; return widthFromStart(offset - m_start); } } else { // FIXME: Support RTL truncation someday, including both modes (when the leftmost run on the line is either RTL or LTR) } return -1; } // ----------------------------------------------------------------------------- InlineTextBoxArray::InlineTextBoxArray() { setAutoDelete(false); } int InlineTextBoxArray::compareItems( Item d1, Item d2 ) { assert(d1); assert(d2); return static_cast(d1)->m_y - static_cast(d2)->m_y; } // remove this once TQVector::bsearch is fixed 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 ) // null item greater res = -1; else res = ((TQGVector*)this)->compareItems( d, (*this)[mid] ); if ( res < 0 ) n2 = mid - 1; else if ( res > 0 ) n1 = mid + 1; else { // found it found = true; break; } } /* if ( !found ) return -1; */ // search to first one equal or bigger while ( found && (mid > 0) && !((TQGVector*)this)->compareItems(d, (*this)[mid-1]) ) mid--; return mid; } // ------------------------------------------------------------------------------------- RenderText::RenderText(DOM::NodeImpl* node, DOMStringImpl *_str) : RenderObject(node) { // init RenderObject attributes setRenderText(); // our object inherits from RenderText m_minWidth = -1; m_maxWidth = -1; str = _str; if(str) str->ref(); KHTMLAssert(!str || !str->l || str->s); m_selectionState = SelectionNone; m_hasReturn = true; #ifdef DEBUG_LAYOUT TQConstString 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 changedText = ((!style() && ( _style->textTransform() != TTNONE || !_style->preserveLF() || !_style->preserveWS() )) || (style() && (style()->textTransform() != _style->textTransform() || style()->whiteSpace() != _style->whiteSpace()))); RenderObject::setStyle( _style ); m_lineHeight = RenderObject::lineHeight(false); if (!isBR() && changedText) { DOM::DOMStringImpl* textToTransform = originalString(); if (textToTransform) setText(textToTransform, true); } } } RenderText::~RenderText() { KHTMLAssert(m_lines.count() == 0); if(str) str->deref(); } void RenderText::deleteInlineBoxes(RenderArena* arena) { // this is a slight variant of TQArray::clear(). // We don't delete the array itself here because its // likely to be used in the same size later again, saves // us resize() calls unsigned int len = m_lines.size(); if (len) { if (!arena) 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; } InlineTextBox * RenderText::findInlineTextBox( int offset, int &pos, bool checkFirstLetter ) { // The text boxes point to parts of the rendertext's str string // (they don't include '\n') // Find the text box that includes the character at @p offset // and return pos, which is the position of the char in the run. // FIXME: make this use binary search? Dirk says it won't work :-( (LS) (void)checkFirstLetter; #if 0 if (checkFirstLetter && forcedMinOffset()) { // kdDebug(6040) << "checkFirstLetter: forcedMinOffset: " << forcedMinOffset() << endl; RenderFlow *firstLetter = static_cast(previousSibling()); if (firstLetter && firstLetter->isFlow() && firstLetter->isFirstLetter()) { RenderText *letterText = static_cast(firstLetter->firstChild()); //kdDebug(6040) << "lettertext: " << letterText << " minOfs: " << letterText->minOffset() << " maxOfs: " << letterText->maxOffset() << endl; if (offset >= letterText->minOffset() && offset <= letterText->maxOffset()) { InlineTextBox *result = letterText->findInlineTextBox(offset, pos, false); //kdDebug(6040) << "result: " << result << endl; if (result) return result; } } } #endif if ( m_lines.isEmpty() ) return 0L; // The text boxes don't resemble a contiguous coverage of the text, there // may be holes. Therefore, we snap to the nearest previous text box if // the given offset happens to point to such a hole. InlineTextBox* s = m_lines[0]; uint count = m_lines.count(); uint si = 0; uint nearest_idx = 0; // index of nearest text box int nearest = INT_MAX; // nearest distance //kdDebug(6040) << "s[" << si << "] m_start " << s->m_start << " m_end " << (s->m_start + s->m_len) << endl; while(!(offset >= s->m_start && offset <= s->m_start + s->m_len) && ++si < count) { int dist = offset - (s->m_start + s->m_len); //kdDebug(6040) << "dist " << dist << " nearest " << nearest << endl; if (dist >= 0 && dist <= nearest) { nearest = dist; nearest_idx = si - 1; }/*end if*/ s = m_lines[si]; //kdDebug(6040) << "s[" << si << "] m_start " << s->m_start << " m_end " << (s->m_start + s->m_len) << endl; } //kdDebug(6040) << "nearest_idx " << nearest_idx << " count " << count << endl; if (si >= count) s = m_lines[nearest_idx]; // we are now in the correct text box pos = kMin(offset - s->m_start, int( s->m_len )); //kdDebug(6040) << "offset=" << offset << " s->m_start=" << s->m_start << endl; return s; } bool RenderText::nodeAtPoint(NodeInfo& info, int _x, int _y, int _tx, int _ty, HitTestAction /*hitTestAction*/, bool /*inBox*/) { assert(parent()); bool inside = false; if (style()->visibility() != HIDDEN) { 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->m_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; } } // #### ported over from Safari. Can this happen at all? (lars) if (inside && element()) { if (info.innerNode() && info.innerNode()->renderer() && !info.innerNode()->renderer()->isInline()) { // Within the same layer, inlines are ALWAYS fully above blocks. Change inner node. info.setInnerNode(element()); // Clear everything else. info.setInnerNonSharedNode(0); info.setURLElement(0); } if (!info.innerNode()) info.setInnerNode(element()); if(!info.innerNonSharedNode()) info.setInnerNonSharedNode(element()); } return inside; } FindSelectionResult RenderText::checkSelectionPoint(int _x, int _y, int _tx, int _ty, DOM::NodeImpl*& node, int &offset, SelPointState &) { // kdDebug(6040) << "RenderText::checkSelectionPoint " << this << " _x=" << _x << " _y=" << _y // << " _tx=" << _tx << " _ty=" << _ty << endl; //kdDebug(6040) << renderName() << "::checkSelectionPoint x=" << xPos() << " y=" << yPos() << " w=" << width() << " h=" << height() << " m_lines.count=" << m_lines.count() << endl; NodeImpl *lastNode = 0; int lastOffset = 0; FindSelectionResult lastResult = SelectionPointAfter; for(unsigned int si = 0; si < m_lines.count(); si++) { InlineTextBox* s = m_lines[si]; FindSelectionResult result; const Font *f = htmlFont( si==0 ); result = s->checkSelectionPoint(_x, _y, _tx, _ty, f, this, offset, m_lineHeight); // kdDebug(6040) << "RenderText::checkSelectionPoint " << this << " line " << si << " result=" << result << " offset=" << offset << endl; if ( result == SelectionPointInside ) // x,y is inside the textrun { offset += s->m_start; // add the offset from the previous lines // kdDebug(6040) << "RenderText::checkSelectionPoint inside -> " << offset << endl; node = element(); return SelectionPointInside; } else if ( result == SelectionPointBefore ) { if (!lastNode) { // x,y is before the textrun -> stop here offset = 0; // kdDebug(6040) << "RenderText::checkSelectionPoint " << this << "before us -> returning Before" << endl; node = element(); return SelectionPointBefore; } } else if ( result == SelectionPointBeforeInLine ) { offset = s->m_start; node = element(); return SelectionPointInside; } else if ( result == SelectionPointAfterInLine ) { lastOffset = s->m_start + s->m_len; lastNode = element(); lastResult = result; // no return here } } if (lastNode) { offset = lastOffset; node = lastNode; // kdDebug(6040) << "RenderText::checkSelectionPoint: lastNode " << lastNode << " lastOffset " << lastOffset << endl; return lastResult; } // set offset to max offset = str->l; //qDebug("setting node to %p", element()); node = element(); // kdDebug(6040) << "RenderText::checkSelectionPoint: node " << node << " offset " << offset << endl; return SelectionPointAfter; } void RenderText::caretPos(int offset, int flags, int &_x, int &_y, int &width, int &height) { if (!m_lines.count()) { _x = _y = height = -1; width = 1; return; } int pos; InlineTextBox * s = findInlineTextBox( offset, pos, true ); RenderText *t = s->renderText(); // kdDebug(6040) << "offset="<m_x="<m_x << " s->m_start"<m_start << " s->m_len" << s->m_len << " _y=" << _y << endl; #endif int absx, absy; if (absolutePosition(absx,absy)) { //kdDebug(6040) << "absx=" << absx << " absy=" << absy << endl; _x += absx; _y += absy; } else { // we don't know our absolute position, and there is no point returning // just a relative one _x = _y = -1; } } long RenderText::minOffset() const { if (!m_lines.count()) return 0; // FIXME: it is *not* guaranteed that the first run contains the lowest offset // Either make this a linear search (slow), // or maintain an index (needs much mem), // or calculate and store it in bidi.cpp (needs calculation even if not needed) // (LS) return m_lines[0]->m_start; } long RenderText::maxOffset() const { int count = m_lines.count(); if (!count) return str->l; // FIXME: it is *not* guaranteed that the last run contains the highest offset // Either make this a linear search (slow), // or maintain an index (needs much mem), // or calculate and store it in bidi.cpp (needs calculation even if not needed) // (LS) return m_lines[count - 1]->m_start + m_lines[count - 1]->m_len; } bool RenderText::absolutePosition(int &xPos, int &yPos, bool) const { return RenderObject::absolutePosition(xPos, yPos, false); } bool RenderText::posOfChar(int chr, int &x, int &y) { if (!parent()) return false; parent()->absolutePosition( x, y, false ); int pos; InlineTextBox * s = findInlineTextBox( chr, pos ); if ( s ) { // s is the line containing the character x += s->m_x; // this is the x of the beginning of the line, but it's good enough for now y += s->m_y; return true; } return false; } void RenderText::paint( PaintInfo& /*pI*/, int /*tx*/, int /*ty*/) { KHTMLAssert( false ); } void RenderText::calcMinMaxWidth() { KHTMLAssert( !minMaxKnown() ); // ### calc Min and Max width... 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; // ### not 100% correct for first-line const Font *f = htmlFont( false ); int wordSpacing = style()->wordSpacing(); int len = str->l; bool isSpace = false; bool firstWord = true; bool firstLine = true; for(int i = 0; i < len; i++) { unsigned short c = str->s[i].tqunicode(); bool isNewline = false; // If line-breaks survive to here they are preserved if ( c == '\n' ) { m_hasBreak = true; isNewline = true; isSpace = false; } else isSpace = c == ' '; if ((isSpace || isNewline) && i == 0) m_hasBeginWS = true; if ((isSpace || isNewline) && i == len-1) m_hasEndWS = true; if (i && c == SOFT_HYPHEN) continue; int wordlen = 0; while( i+wordlen < len && (i+wordlen == 0 || str->s[i+wordlen].tqunicode() != SOFT_HYPHEN) && !(isBreakable( str->s, i+wordlen, str->l )) ) wordlen++; if (wordlen) { #ifndef APPLE_CHANGES int w = f->width(str->s, str->l, i, wordlen); #else int w = widthFromCache(f, i, wordlen); #endif currMinWidth += w; currMaxWidth += w; // Add in wordspacing to our maxwidth, but not if this is the last word. if (wordSpacing && !containsOnlyWhitespace(i+wordlen, len-(i+wordlen))) currMaxWidth += wordSpacing; if (firstWord) { firstWord = false; m_beginMinWidth = w; } m_endMinWidth = w; if(currMinWidth > m_minWidth) m_minWidth = currMinWidth; currMinWidth = 0; i += wordlen-1; } else { // Nowrap can never be broken, so don't bother setting the // breakable character boolean. Pre can only be broken if we encounter a newline. if (style()->autoWrap() || isNewline) m_hasBreakableChar = true; if(currMinWidth > m_minWidth) m_minWidth = currMinWidth; currMinWidth = 0; if (isNewline) // Only set if isPre was true and we saw a newline. { 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()->autoWrap()) { m_minWidth = m_maxWidth; if (style()->preserveLF()) { if (firstLine) m_beginMinWidth = m_maxWidth; m_endMinWidth = currMaxWidth; } } setMinMaxKnown(); //kdDebug( 6040 ) << "Text::calcMinMaxWidth(): min = " << m_minWidth << " max = " << m_maxWidth << endl; } int RenderText::minXPos() const { if (!m_lines.count()) return 0; int retval=6666666; for (unsigned i=0;i < m_lines.count(); i++) { retval = kMin ( retval, int( m_lines[i]->m_x )); } return retval; } int RenderText::inlineXPos() const { return minXPos(); } int RenderText::inlineYPos() const { return m_lines.isEmpty() ? 0 : m_lines[0]->yPos(); } const TQFont &RenderText::font() { return style()->font(); } void RenderText::setText(DOMStringImpl *text, bool force) { if( !force && str == text ) return; DOMStringImpl *oldstr = str; if(text && style()) str = text->collapseWhiteSpace(style()->preserveLF(), style()->preserveWS()); else str = text; if(str) str->ref(); if(oldstr) oldstr->deref(); if ( str && style() ) { oldstr = str; switch(style()->textTransform()) { case CAPITALIZE: { RenderObject *o; bool runOnString = false; // find previous non-empty text renderer if one exists for (o = previousRenderer(); o; o = o->previousRenderer()) { if (!o->isInlineFlow()) { if (!o->isText()) break; DOMStringImpl *prevStr = static_cast(o)->string(); // !prevStr can happen with css like "content:open-quote;" if (!prevStr) break; if (prevStr->length() == 0) continue; TQChar c = (*prevStr)[prevStr->length() - 1]; if (!c.isSpace()) runOnString = true; break; } } str = str->capitalize(runOnString); } break; case UPPERCASE: str = str->upper(); break; case LOWERCASE: str = str->lower(); break; case NONE: default:; } str->ref(); oldstr->deref(); } // ### what should happen if we change the text of a // RenderBR object ? KHTMLAssert(!isBR() || (str->l == 1 && (*str->s) == '\n')); KHTMLAssert(!str->l || str->s); setNeedsLayoutAndMinMaxRecalc(); #ifdef BIDI_DEBUG TQConstString cstr(str->s, str->l); kdDebug( 6040 ) << "RenderText::setText( " << cstr.string().length() << " ) '" << cstr.string() << "'" << endl; #endif } int RenderText::height() const { int retval; if ( m_lines.count() ) retval = m_lines[m_lines.count()-1]->m_y + m_lineHeight - m_lines[0]->m_y; else retval = metrics( false ).height(); return retval; } short RenderText::lineHeight( bool firstLine ) const { if ( firstLine ) return RenderObject::lineHeight( firstLine ); return m_lineHeight; } short RenderText::baselinePosition( bool firstLine ) const { const TQFontMetrics &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) { //kdDebug(6040) << "position: from="<m_start << " m_len: " << s->m_len << endl; if(m_lines.count() == m_lines.size()) m_lines.resize(m_lines.size()*2+1); m_lines.insert(m_lines.count(), s); //kdDebug(6040) << this << " " << renderName() << "::position inserted" << endl; } 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; if ( f == &style()->htmlFont() && from == 0 && len == str->l ) return m_maxWidth; int w = f->width(str->s, str->l, from, len ); //kdDebug( 6040 ) << "RenderText::width(" << from << ", " << len << ") = " << w << endl; return w; } short RenderText::width() const { int w; int minx = 100000000; int maxx = 0; // slooow 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 = kMax(0, maxx-minx); return w; } void RenderText::tqrepaint(Priority p) { RenderObject *cb = containingBlock(); if(cb) cb->tqrepaint(p); } bool RenderText::isFixedWidthFont() const { return TQFontInfo(style()->font()).fixedPitch(); } short RenderText::verticalPositionHint( bool firstLine ) const { return parent()->verticalPositionHint( firstLine ); } const TQFontMetrics &RenderText::metrics(bool firstLine) const { if( firstLine && hasFirstLine() ) { RenderStyle *pseudoStyle = style()->getPseudoStyle(RenderStyle::FIRST_LINE); if ( pseudoStyle ) return pseudoStyle->fontMetrics(); } return style()->fontMetrics(); } const Font *RenderText::htmlFont(bool firstLine) const { const Font *f = 0; if( firstLine && hasFirstLine() ) { RenderStyle *pseudoStyle = style()->getPseudoStyle(RenderStyle::FIRST_LINE); if ( pseudoStyle ) f = &pseudoStyle->htmlFont(); } else { f = &style()->htmlFont(); } return f; } 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].direction() == TQChar::DirWS); currPos++); return currPos >= (from+len); } 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 preserveWS = style()->preserveWS(); bool preserveLF = style()->preserveLF(); bool autoWrap = style()->autoWrap(); if (preserveWS) 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].direction() == TQChar::DirWS || (!preserveLF && str->s[0] == '\n'))) { const Font *f = htmlFont( false ); TQChar space[1]; space[0] = ' '; int spaceWidth = f->width(space, 1, 0); maxW -= spaceWidth; } stripFrontSpaces = !preserveWS && m_hasEndWS; if (!autoWrap) minW = maxW; else if (minW > maxW) minW = maxW; // Compute our max widths by scanning the string for newlines. 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) { #ifndef 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) // A
 run that ends with a newline, as in, e.g.,
	        // 
Some text\n\nMore text
endMaxW = 0; } } } #ifdef ENABLE_DUMP static TQString quoteAndEscapeNonPrintables(const TQString &s) { TQString result; result += '"'; for (uint i = 0; i != s.length(); ++i) { TQChar c = s.at(i); if (c == '\\') { result += "\\\\"; } else if (c == '"') { result += "\\\""; } else { ushort u = c.tqunicode(); if (u >= 0x20 && u < 0x7F) { result += c; } else { TQString hex; hex.sprintf("\\x{%X}", u); result += hex; } } } result += '"'; return result; } static void writeTextRun(TQTextStream &ts, const RenderText &o, const InlineTextBox &run) { ts << "text run at (" << run.m_x << "," << run.m_y << ") width " << run.m_width << ": " << quoteAndEscapeNonPrintables(o.data().string().mid(run.m_start, run.m_len)); } void RenderText::dump(TQTextStream &stream, const TQString &ind) const { RenderObject::dump( stream, ind ); for (unsigned int i = 0; i < m_lines.count(); i++) { stream << endl << ind << " "; writeTextRun(stream, *this, *m_lines[i]); } } #endif 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