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      1 /*
      2  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  *
     19  */
     20 
     21 #include "config.h"
     22 
     23 #include "core/rendering/RenderMeter.h"
     24 
     25 #include "core/html/HTMLMeterElement.h"
     26 #include "core/rendering/RenderTheme.h"
     27 
     28 using namespace std;
     29 
     30 namespace WebCore {
     31 
     32 using namespace HTMLNames;
     33 
     34 RenderMeter::RenderMeter(HTMLElement* element)
     35     : RenderBlock(element)
     36 {
     37 }
     38 
     39 RenderMeter::~RenderMeter()
     40 {
     41 }
     42 
     43 HTMLMeterElement* RenderMeter::meterElement() const
     44 {
     45     ASSERT(node());
     46 
     47     if (isHTMLMeterElement(node()))
     48         return toHTMLMeterElement(node());
     49 
     50     ASSERT(node()->shadowHost());
     51     return toHTMLMeterElement(node()->shadowHost());
     52 }
     53 
     54 void RenderMeter::updateLogicalWidth()
     55 {
     56     RenderBox::updateLogicalWidth();
     57 
     58     IntSize frameSize = theme()->meterSizeForBounds(this, pixelSnappedIntRect(frameRect()));
     59     setLogicalWidth(isHorizontalWritingMode() ? frameSize.width() : frameSize.height());
     60 }
     61 
     62 void RenderMeter::computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues& computedValues) const
     63 {
     64     RenderBox::computeLogicalHeight(logicalHeight, logicalTop, computedValues);
     65 
     66     LayoutRect frame = frameRect();
     67     if (isHorizontalWritingMode())
     68         frame.setHeight(computedValues.m_extent);
     69     else
     70         frame.setWidth(computedValues.m_extent);
     71     IntSize frameSize = theme()->meterSizeForBounds(this, pixelSnappedIntRect(frame));
     72     computedValues.m_extent = isHorizontalWritingMode() ? frameSize.height() : frameSize.width();
     73 }
     74 
     75 double RenderMeter::valueRatio() const
     76 {
     77     return meterElement()->valueRatio();
     78 }
     79 
     80 void RenderMeter::updateFromElement()
     81 {
     82     repaint();
     83 }
     84 
     85 } // namespace WebCore
     86