1/* 2 * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org> 3 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21#ifndef SVGLength_h 22#define SVGLength_h 23 24#include "bindings/v8/ExceptionMessages.h" 25#include "bindings/v8/ExceptionStatePlaceholder.h" 26#include "core/svg/SVGLengthContext.h" 27#include "core/svg/properties/SVGProperty.h" 28#include "platform/heap/Handle.h" 29 30namespace WebCore { 31 32class CSSPrimitiveValue; 33class ExceptionState; 34class QualifiedName; 35 36enum SVGLengthNegativeValuesMode { 37 AllowNegativeLengths, 38 ForbidNegativeLengths 39}; 40 41class SVGLengthTearOff; 42 43class SVGLength FINAL : public SVGPropertyBase { 44public: 45 typedef SVGLengthTearOff TearOffType; 46 47 static PassRefPtr<SVGLength> create(SVGLengthMode mode = LengthModeOther) 48 { 49 return adoptRef(new SVGLength(mode)); 50 } 51 52 PassRefPtr<SVGLength> clone() const; 53 virtual PassRefPtr<SVGPropertyBase> cloneForAnimation(const String&) const OVERRIDE; 54 55 SVGLengthType unitType() const { return static_cast<SVGLengthType>(m_unitType); } 56 void setUnitType(SVGLengthType); 57 SVGLengthMode unitMode() const { return static_cast<SVGLengthMode>(m_unitMode); } 58 59 bool operator==(const SVGLength&) const; 60 bool operator!=(const SVGLength& other) const { return !operator==(other); } 61 62 float value(const SVGLengthContext& context) const 63 { 64 return value(context, IGNORE_EXCEPTION); 65 } 66 float value(const SVGLengthContext&, ExceptionState&) const; 67 void setValue(float, const SVGLengthContext&, ExceptionState&); 68 69 float valueInSpecifiedUnits() const { return m_valueInSpecifiedUnits; } 70 void setValueInSpecifiedUnits(float value) { m_valueInSpecifiedUnits = value; } 71 72 float valueAsPercentage() const; 73 74 virtual String valueAsString() const OVERRIDE; 75 void setValueAsString(const String&, ExceptionState&); 76 77 void newValueSpecifiedUnits(SVGLengthType, float valueInSpecifiedUnits); 78 void convertToSpecifiedUnits(SVGLengthType, const SVGLengthContext&, ExceptionState&); 79 80 // Helper functions 81 inline bool isRelative() const 82 { 83 return m_unitType == LengthTypePercentage 84 || m_unitType == LengthTypeEMS 85 || m_unitType == LengthTypeEXS; 86 } 87 88 bool isZero() const 89 { 90 return !m_valueInSpecifiedUnits; 91 } 92 93 static PassRefPtr<SVGLength> fromCSSPrimitiveValue(CSSPrimitiveValue*); 94 static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> toCSSPrimitiveValue(PassRefPtr<SVGLength>); 95 static SVGLengthMode lengthModeForAnimatedLengthAttribute(const QualifiedName&); 96 97 PassRefPtr<SVGLength> blend(PassRefPtr<SVGLength> from, float progress) const; 98 99 virtual void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) OVERRIDE; 100 virtual void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> from, PassRefPtr<SVGPropertyBase> to, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement) OVERRIDE; 101 virtual float calculateDistance(PassRefPtr<SVGPropertyBase> to, SVGElement* contextElement) OVERRIDE; 102 103 static AnimatedPropertyType classType() { return AnimatedLength; } 104 105private: 106 SVGLength(SVGLengthMode); 107 SVGLength(const SVGLength&); 108 109 float m_valueInSpecifiedUnits; 110 unsigned m_unitMode : 2; 111 unsigned m_unitType : 4; 112}; 113 114inline PassRefPtr<SVGLength> toSVGLength(PassRefPtr<SVGPropertyBase> passBase) 115{ 116 RefPtr<SVGPropertyBase> base = passBase; 117 ASSERT(base->type() == SVGLength::classType()); 118 return static_pointer_cast<SVGLength>(base.release()); 119} 120 121} // namespace WebCore 122 123#endif // SVGLength_h 124