C++ QListView::header方法代码示例

/**
 * Displays a tool-tip according to the current location of the mouse
 * pointer.
 * @param	pt	The mouse pointer coordinates
 */
void ListToolTip::maybeTip(const QPoint& pt)
{
	QString str;
	QListView* pList;
	QListViewItem* pItem;
	
	// Get the item at the given point
	pList = m_pList->getList();
	pItem = pList->itemAt(pt);
	if (pItem == NULL)
		return;

	// Get the tip string for this item
	if (!m_pList->getTip(pItem, str))
		return;

	// Get the bounding rectangle of the item
	const QRect rcItem = pList->itemRect(pItem);
	if (!rcItem.isValid())
		return;

	// Get the header coordinates
	const QRect rcHead = pList->header()->rect();
	if (!rcHead.isValid())
		return;

	// Calculate the tool-tip rectangle
	QRect rcCell(rcHead.left(), rcItem.top(), rcItem.width(), rcItem.height());

	// Display the tool-tip
	tip(rcCell, str);
}

QListViewItem * ListViewDnd::itemAt( QPoint pos )
{
    QListView * src = (QListView *) this->src;
    int headerHeight = (int)(src->header()->height());
    pos.ry() -= headerHeight;
    QListViewItem * result = src->itemAt( pos );

    if ( result && ( pos.ry() < (src->itemPos(result) + result->height()/2) ) )
	result = result->itemAbove();

    // Wind back if has parent, and we're in flat mode
    while ( result && result->parent() && (dMode & Flat) )
	result = result->parent();

    // Wind back if has parent, and we're in flat mode
    while ( result && !result->isVisible() && result->parent() )
	result = result->parent();

    if ( !result && src->firstChild() && (pos.y() > src->itemRect(src->firstChild()).bottom()) ) {
	result = src->lastItem();
	if ( !result->isVisible() )
	    // Handle special case where last item is actually hidden
	    result = result->itemAbove();
    }

    return result;
}

void QMultiCheckListItem::paintCell(QPainter *p,const QColorGroup & cg, int col, int width, int align)
{

  if ( !p )
    return;

  QListView *lv = listView();
  if ( !lv )
    return;

  QListViewItem::paintCell(p,cg,col,width,align );
    
  int marg = lv->itemMargin();
//  int width = BoxSize + marg*2;
  // use a provate color group and set the text/highlighted text colors
  QColorGroup mcg = cg;

  if (checkBoxColumns.testBit(col)) {
    // Bold/Italic/use default checkboxes
    // code allmost identical to QCheckListItem
    Q_ASSERT( lv ); //###
    // I use the text color of defaultStyles[0], normalcol in parent listview
//    mcg.setColor( QColorGroup::Text, ((StyleListView*)lv)->normalcol );
    int x = 0;
    if ( align == AlignCenter ) {
      QFontMetrics fm( lv->font() );
      x = (width - BoxSize - fm.width(text(0)))/2;
    }
    int y = (height() - BoxSize) / 2;

    if ( !isEnabled() || disableStates.testBit(col))
      p->setPen( QPen( lv->palette().color( QPalette::Disabled, QColorGroup::Text ), 2 ) );
    else
      p->setPen( QPen( mcg.text(), 2 ) );
      
    if ( isSelected() && lv->header()->mapToSection( 0 ) != 0 ) {
      p->fillRect( 0, 0, x + marg + BoxSize + 4, height(),
             mcg.brush( QColorGroup::Highlight ) );
      if ( isEnabled() )
        p->setPen( QPen( mcg.highlightedText(), 2 ) ); // FIXME! - use defaultstyles[0].selecol. luckily not used :)
    }
    p->drawRect( x+marg, y+2, BoxSize-4, BoxSize-4 );
    x++;
    y++;
    if ( checkStates.testBit(col) ) {
      QPointArray a( 7*2 );
      int i, xx, yy;
      xx = x+1+marg;
      yy = y+5;
      for ( i=0; i<3; i++ ) {
        a.setPoint( 2*i,   xx, yy );
        a.setPoint( 2*i+1, xx, yy+2 );
        xx++; yy++;
      }
      yy -= 2;
      for ( i=3; i<7; i++ ) {
        a.setPoint( 2*i,   xx, yy );
        a.setPoint( 2*i+1, xx, yy+2 );
        xx++; yy--;
      }
      p->drawLineSegments( a );
    }
    
  }

    
}