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 /**
  * This file is part of the html renderer for KDE.
  *
  * Copyright (C) 2000-2003 Lars Knoll (knoll@kde.org)
  *
  * 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.
  *
  */
 #include "rendering/render_body.h"
 #include "rendering/render_canvas.h"
 #include "html/html_baseimpl.h"
 #include "xml/dom_docimpl.h"
 #include "khtmlview.h"
 
 #include "khtml_debug.h"
 
 #include <QScrollBar>
 
 using namespace khtml;
 using namespace DOM;
 
 RenderBody::RenderBody(HTMLBodyElementImpl *element)
     : RenderBlock(element)
 {
     scrollbarsStyled = false;
 }
 
 RenderBody::~RenderBody()
 {
 }
 
 void RenderBody::setStyle(RenderStyle *style)
 {
     RenderBlock::setStyle(style);
     document()->setTextColor(style->color());
     scrollbarsStyled = false;
 }
 
 void RenderBody::paintBoxDecorations(PaintInfo &paintInfo, int _tx, int _ty)
 {
     //qCDebug(KHTML_LOG) << renderName() << "::paintDecorations()";
     QColor bgColor;
     const BackgroundLayer *bgLayer = nullptr;
 
     if (parent()->style()->hasBackground()) {
         // the root element already has a non-transparent background of its own
         // so we must fork our own. (CSS2.1 - 14.2 §4)
         bgColor =  style()->backgroundColor();
         bgLayer = style()->backgroundLayers();
     }
 
     int w = width();
     int h = height() + borderTopExtra() + borderBottomExtra();
     _ty -= borderTopExtra();
     QRect cr = QRect(_tx, _ty, w, h).intersected(paintInfo.r);
 
     paintAllBackgrounds(paintInfo.p, bgColor, bgLayer, cr, _tx, _ty, w, h);
 
     if (style()->hasBorder()) {
         paintBorder(paintInfo.p, _tx, _ty, w, h, style());
     }
 
 }
 
 void RenderBody::repaint(Priority p)
 {
     RenderObject *cb = containingBlock();
     if (cb) {
         cb->repaint(p);
     }
 }
 
 void RenderBody::layout()
 {
     // in quirk mode, we'll need to have our margins determined
     // for percentage height calculations
     if (style()->htmlHacks()) {
         calcHeight();
     }
     RenderBlock::layout();
 
     if (!scrollbarsStyled) {
         RenderCanvas *canvas = this->canvas();
         if (canvas->view()) {
             canvas->view()->horizontalScrollBar()->setPalette(style()->palette());
             canvas->view()->verticalScrollBar()->setPalette(style()->palette());
         }
         scrollbarsStyled = true;
     }
 }
 
 int RenderBody::availableHeight() const
 {
     int h = RenderBlock::availableHeight();
 
     if (style()->marginTop().isFixed()) {
         h  -= style()->marginTop().value();
     }
     if (style()->marginBottom().isFixed()) {
         h -= style()->marginBottom().value();
     }
 
     return qMax(0, h);
 }