Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 131 insertions, 0 deletions

diff --git a/Source/WebCore/svg/SVGLength.h b/Source/WebCore/svg/SVGLength.h
new file mode 100644
index 0000000..a256ed3
--- /dev/null
+++ b/Source/WebCore/svg/SVGLength.h
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
+ * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@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.
+ */
+
+#ifndef SVGLength_h
+#define SVGLength_h
+
+#if ENABLE(SVG)
+#include "ExceptionCode.h"
+#include "SVGPropertyTraits.h"
+
+namespace WebCore {
+
+class CSSPrimitiveValue;
+
+enum SVGLengthType {
+    LengthTypeUnknown = 0,
+    LengthTypeNumber = 1,
+    LengthTypePercentage = 2,
+    LengthTypeEMS = 3,
+    LengthTypeEXS = 4,
+    LengthTypePX = 5,
+    LengthTypeCM = 6,
+    LengthTypeMM = 7,
+    LengthTypeIN = 8,
+    LengthTypePT = 9,
+    LengthTypePC = 10
+};
+
+enum SVGLengthMode {
+    LengthModeWidth = 0,
+    LengthModeHeight,
+    LengthModeOther
+};
+
+class SVGElement;
+
+class SVGLength {
+public:
+    // Forward declare these enums in the w3c naming scheme, for IDL generation
+    enum {
+        SVG_LENGTHTYPE_UNKNOWN = LengthTypeUnknown,
+        SVG_LENGTHTYPE_NUMBER = LengthTypeNumber,
+        SVG_LENGTHTYPE_PERCENTAGE = LengthTypePercentage,
+        SVG_LENGTHTYPE_EMS = LengthTypeEMS,
+        SVG_LENGTHTYPE_EXS = LengthTypeEXS,
+        SVG_LENGTHTYPE_PX = LengthTypePX,
+        SVG_LENGTHTYPE_CM = LengthTypeCM,
+        SVG_LENGTHTYPE_MM = LengthTypeMM,
+        SVG_LENGTHTYPE_IN = LengthTypeIN,
+        SVG_LENGTHTYPE_PT = LengthTypePT,
+        SVG_LENGTHTYPE_PC = LengthTypePC
+    };
+
+    SVGLength(SVGLengthMode mode = LengthModeOther, const String& valueAsString = String());
+    SVGLength(const SVGLength&);
+
+    SVGLengthType unitType() const;
+
+    bool operator==(const SVGLength&) const;
+    bool operator!=(const SVGLength&) const;
+
+    float value(const SVGElement* context) const;
+    float value(const SVGElement* context, ExceptionCode&) const;
+    void setValue(float, const SVGElement* context, ExceptionCode&);
+
+    float valueInSpecifiedUnits() const { return m_valueInSpecifiedUnits; }
+    void setValueInSpecifiedUnits(float value) { m_valueInSpecifiedUnits = value; }
+
+    float valueAsPercentage() const;
+
+    String valueAsString() const;
+    void setValueAsString(const String&, ExceptionCode&);
+
+    void newValueSpecifiedUnits(unsigned short, float valueInSpecifiedUnits, ExceptionCode&);
+    void convertToSpecifiedUnits(unsigned short, const SVGElement* context, ExceptionCode&);
+
+    // Helper functions
+    inline bool isRelative() const
+    {
+        SVGLengthType type = unitType();
+        return type == LengthTypePercentage || type == LengthTypeEMS || type == LengthTypeEXS;
+    }
+
+    static SVGLength fromCSSPrimitiveValue(CSSPrimitiveValue*);
+    static PassRefPtr<CSSPrimitiveValue> toCSSPrimitiveValue(const SVGLength&);
+
+private:
+    bool determineViewport(const SVGElement* context, float& width, float& height) const;
+
+    float convertValueFromPercentageToUserUnits(float value, const SVGElement* context, ExceptionCode&) const;
+    float convertValueFromUserUnitsToPercentage(float value, const SVGElement* context, ExceptionCode&) const;
+
+    float convertValueFromUserUnitsToEMS(float value, const SVGElement* context, ExceptionCode&) const;
+    float convertValueFromEMSToUserUnits(float value, const SVGElement* context, ExceptionCode&) const;
+
+    float convertValueFromUserUnitsToEXS(float value, const SVGElement* context, ExceptionCode&) const;
+    float convertValueFromEXSToUserUnits(float value, const SVGElement* context, ExceptionCode&) const;
+
+private:
+    float m_valueInSpecifiedUnits;
+    unsigned int m_unit;
+};
+
+template<>
+struct SVGPropertyTraits<SVGLength> {
+    static SVGLength initialValue() { return SVGLength(); }
+    static String toString(const SVGLength& type) { return type.valueAsString(); }
+};
+
+
+} // namespace WebCore
+
+#endif // ENABLE(SVG)
+#endif // SVGLength_h