render_frames.cpp

konqueror3 embedded版本, KDE环境下的当家浏览器的嵌入式版本源码包.

#ifdef DEBUG_LAYOUT
      kdDebug(6040) << "child frame at (" << xPos << "/" << yPos << ") size (" << m_gridLayout[1][c] << "/" << m_gridLayout[0][r] << ")" << endl;
#endif
      // has to be resized and itself resize its contents
      if ((m_gridLayout[1][c] != child->width()) || (m_gridLayout[0][r] != child->height())) {
          child->setWidth( m_gridLayout[1][c] );
          child->setHeight( m_gridLayout[0][r] );
          child->setNeedsLayout(true);
          child->layout();
      }

      xPos += m_gridLayout[1][c] + element()->border();
      child = child->nextSibling();

      if ( !child )
        return;

    }

    yPos += m_gridLayout[0][r] + element()->border();
  }

  // all the remaining frames are hidden to avoid ugly
  // spurious unflowed frames
  while ( child ) {
      child->setWidth( 0 );
      child->setHeight( 0 );
      child->setNeedsLayout(false);

      child = child->nextSibling();
  }
}

bool RenderFrameSet::userResize( MouseEventImpl *evt )
{
    if (needsLayout()) return false;

  bool res = false;
  int _x = evt->clientX();
  int _y = evt->clientY();

  if ( !m_resizing && evt->id() == EventImpl::MOUSEMOVE_EVENT || evt->id() == EventImpl::MOUSEDOWN_EVENT )
  {
#ifdef DEBUG_LAYOUT
    kdDebug( 6031 ) << "mouseEvent:check" << endl;
#endif

    m_hSplit = -1;
    m_vSplit = -1;
    //bool resizePossible = true;

    // check if we're over a horizontal or vertical boundary
    int pos = m_gridLayout[1][0] + xPos();
    for(int c = 1; c < element()->totalCols(); c++)
    {
      if(_x >= pos && _x <= pos+element()->border())
      {
        if(m_vSplitVar && m_vSplitVar[c-1] == true) m_vSplit = c-1;
#ifdef DEBUG_LAYOUT
        kdDebug( 6031 ) << "vsplit!" << endl;
#endif
        res = true;
        break;
      }
      pos += m_gridLayout[1][c] + element()->border();
    }

    pos = m_gridLayout[0][0] + yPos();
    for(int r = 1; r < element()->totalRows(); r++)
    {
      if( _y >= pos && _y <= pos+element()->border())
      {
        if(m_hSplitVar && m_hSplitVar[r-1] == true) m_hSplit = r-1;
#ifdef DEBUG_LAYOUT
        kdDebug( 6031 ) << "hsplitvar = " << m_hSplitVar << endl;
        kdDebug( 6031 ) << "hsplit!" << endl;
#endif
        res = true;
        break;
      }
      pos += m_gridLayout[0][r] + element()->border();
    }
#ifdef DEBUG_LAYOUT
    kdDebug( 6031 ) << m_hSplit << "/" << m_vSplit << endl;
#endif
  }


  m_cursor = Qt::ArrowCursor;
  if(m_hSplit != -1 && m_vSplit != -1)
      m_cursor = Qt::SizeAllCursor;
  else if( m_vSplit != -1 )
      m_cursor = Qt::SizeHorCursor;
  else if( m_hSplit != -1 )
      m_cursor = Qt::SizeVerCursor;

  if(!m_resizing && evt->id() == EventImpl::MOUSEDOWN_EVENT)
  {
      setResizing(true);
      KApplication::setOverrideCursor(QCursor(m_cursor));
      m_vSplitPos = _x;
      m_hSplitPos = _y;
      m_oldpos = -1;
  }

  // ### check the resize is not going out of bounds.
  if(m_resizing && evt->id() == EventImpl::MOUSEUP_EVENT)
  {
    setResizing(false);
    KApplication::restoreOverrideCursor();

    if(m_vSplit != -1 )
    {
#ifdef DEBUG_LAYOUT
      kdDebug( 6031 ) << "split xpos=" << _x << endl;
#endif
      int delta = m_vSplitPos - _x;
      m_gridDelta[1][m_vSplit] -= delta;
      m_gridDelta[1][m_vSplit+1] += delta;
    }
    if(m_hSplit != -1 )
    {
#ifdef DEBUG_LAYOUT
      kdDebug( 6031 ) << "split ypos=" << _y << endl;
#endif
      int delta = m_hSplitPos - _y;
      m_gridDelta[0][m_hSplit] -= delta;
      m_gridDelta[0][m_hSplit+1] += delta;
    }

    // this just schedules the relayout
    // important, otherwise the moving indicator is not correctly erased
    setNeedsLayout(true);
  }

  KHTMLView *view = canvas()->view();
  if ((m_resizing || evt->id() == EventImpl::MOUSEUP_EVENT) && view) {
      QPainter paint( view );
      paint.setPen( Qt::gray );
      paint.setBrush( Qt::gray );
      paint.setRasterOp( Qt::XorROP );
      QRect r(xPos(), yPos(), width(), height());
      const int rBord = 3;
      int sw = element()->border();
      int p = m_resizing ? (m_vSplit > -1 ? _x : _y) : -1;
      if (m_vSplit > -1) {
          if ( m_oldpos >= 0 )
              paint.drawRect( m_oldpos + sw/2 - rBord , r.y(),
                              2*rBord, r.height() );
          if ( p >= 0 )
              paint.drawRect( p  + sw/2 - rBord, r.y(), 2*rBord, r.height() );
      } else {
          if ( m_oldpos >= 0 )
              paint.drawRect( r.x(), m_oldpos + sw/2 - rBord,
                              r.width(), 2*rBord );
          if ( p >= 0 )
              paint.drawRect( r.x(), p + sw/2 - rBord, r.width(), 2*rBord );
      }
      m_oldpos = p;
  }

  return res;
}

void RenderFrameSet::setResizing(bool e)
{
      m_resizing = e;
      for (RenderObject* p = parent(); p; p = p->parent())
          if (p->isFrameSet()) static_cast<RenderFrameSet*>(p)->m_clientresizing = m_resizing;
}

bool RenderFrameSet::canResize( int _x, int _y )
{
    // if we haven't received a layout, then the gridLayout doesn't contain useful data yet
    if (needsLayout() || !m_gridLayout[0] || !m_gridLayout[1] ) return false;

    // check if we're over a horizontal or vertical boundary
    int pos = m_gridLayout[1][0];
    for(int c = 1; c < element()->totalCols(); c++)
        if(_x >= pos && _x <= pos+element()->border())
            return true;

    pos = m_gridLayout[0][0];
    for(int r = 1; r < element()->totalRows(); r++)
        if( _y >= pos && _y <= pos+element()->border())
            return true;

    return false;
}

#ifdef ENABLE_DUMP
void RenderFrameSet::dump(QTextStream &stream, const QString &ind) const
{
    RenderBox::dump(stream,ind);
    stream << " totalrows=" << element()->totalRows();
    stream << " totalcols=" << element()->totalCols();

    if ( m_hSplitVar )
        for (uint i = 0; i < (uint)element()->totalRows(); i++) {
            stream << " hSplitvar(" << i << ")=" << m_hSplitVar[i];
        }

    if ( m_vSplitVar )
        for (uint i = 0; i < (uint)element()->totalCols(); i++)
            stream << " vSplitvar(" << i << ")=" << m_vSplitVar[i];
}
#endif

/**************************************************************************************/

RenderPart::RenderPart(DOM::HTMLElementImpl* node)
    : RenderWidget(node)
{
    // init RenderObject attributes
    setInline(false);
}

void RenderPart::setWidget( QWidget *widget )
{
#ifdef DEBUG_LAYOUT
    kdDebug(6031) << "RenderPart::setWidget()" << endl;
#endif

    setQWidget( widget );
    widget->setFocusPolicy(QWidget::WheelFocus);
    if(widget->inherits("KHTMLView"))
        connect( widget, SIGNAL( cleared() ), this, SLOT( slotViewCleared() ) );

    setNeedsLayoutAndMinMaxRecalc();

    // make sure the scrollbars are set correctly for restore
    // ### find better fix
    slotViewCleared();
}

bool RenderPart::partLoadingErrorNotify(khtml::ChildFrame *, const KURL& , const QString& )
{
    return false;
}

short RenderPart::intrinsicWidth() const
{
    return 300;
}

int RenderPart::intrinsicHeight() const
{
    return 200;
}

void RenderPart::slotViewCleared()
{
}

/***************************************************************************************/

RenderFrame::RenderFrame( DOM::HTMLFrameElementImpl *frame )
    : RenderPart(frame)
{
    setInline( false );
}

void RenderFrame::slotViewCleared()
{
    if(m_widget->inherits("QScrollView")) {
#ifdef DEBUG_LAYOUT
        kdDebug(6031) << "frame is a scrollview!" << endl;
#endif
        QScrollView *view = static_cast<QScrollView *>(m_widget);
        if(!element()->frameBorder || !((static_cast<HTMLFrameSetElementImpl *>(element()->parentNode()))->frameBorder()))
            view->setFrameStyle(QFrame::NoFrame);
	    view->setVScrollBarMode(element()->scrolling );
	    view->setHScrollBarMode(element()->scrolling );
        if(view->inherits("KHTMLView")) {
#ifdef DEBUG_LAYOUT
            kdDebug(6031) << "frame is a KHTMLview!" << endl;
#endif
            KHTMLView *htmlView = static_cast<KHTMLView *>(view);
            if(element()->marginWidth != -1) htmlView->setMarginWidth(element()->marginWidth);
            if(element()->marginHeight != -1) htmlView->setMarginHeight(element()->marginHeight);
        }
    }
}

/****************************************************************************************/

RenderPartObject::RenderPartObject( DOM::HTMLElementImpl* element )
    : RenderPart( element )
{
    // init RenderObject attributes
    setInline(true);
}

void RenderPartObject::updateWidget()
{
  QString url;
  KHTMLPart *part = m_view->part();