1/* 2 * Copyright (C) 2009 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#ifndef RenderMeter_h 22#define RenderMeter_h 23 24#include "core/rendering/RenderBlock.h" 25#include "core/rendering/RenderWidget.h" 26 27namespace WebCore { 28 29class HTMLMeterElement; 30 31class RenderMeter FINAL : public RenderBlock { 32public: 33 explicit RenderMeter(HTMLElement*); 34 virtual ~RenderMeter(); 35 36 HTMLMeterElement* meterElement() const; 37 virtual void updateFromElement(); 38 39private: 40 virtual void updateLogicalWidth() OVERRIDE; 41 virtual void computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues&) const OVERRIDE; 42 43 virtual const char* renderName() const { return "RenderMeter"; } 44 virtual bool isMeter() const { return true; } 45 virtual bool requiresForcedStyleRecalcPropagation() const { return true; } 46 47 double valueRatio() const; 48}; 49 50inline RenderMeter* toRenderMeter(RenderObject* object) 51{ 52 ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isMeter()); 53 return static_cast<RenderMeter*>(object); 54} 55 56// This will catch anyone doing an unnecessary cast. 57void toRenderMeter(const RenderMeter*); 58 59} // namespace WebCore 60 61#endif // RenderMeter_h 62