WebCore/svg/SVGPreserveAspectRatio.h
changeset 0 4f2f89ce4247
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/svg/SVGPreserveAspectRatio.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,95 @@
+/*
+    Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
+                  2004, 2005, 2006, 2007 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 SVGPreserveAspectRatio_h
+#define SVGPreserveAspectRatio_h
+
+#if ENABLE(SVG)
+#include "FloatRect.h"
+#include "PlatformString.h"
+#include "SVGNames.h"
+
+namespace WebCore {
+
+    class String;
+    class AffineTransform;
+
+    class SVGPreserveAspectRatio {
+    public:
+        enum SVGPreserveAspectRatioType {
+            SVG_PRESERVEASPECTRATIO_UNKNOWN     = 0,
+            SVG_PRESERVEASPECTRATIO_NONE        = 1,
+            SVG_PRESERVEASPECTRATIO_XMINYMIN    = 2,
+            SVG_PRESERVEASPECTRATIO_XMIDYMIN    = 3,
+            SVG_PRESERVEASPECTRATIO_XMAXYMIN    = 4,
+            SVG_PRESERVEASPECTRATIO_XMINYMID    = 5,
+            SVG_PRESERVEASPECTRATIO_XMIDYMID    = 6,
+            SVG_PRESERVEASPECTRATIO_XMAXYMID    = 7,
+            SVG_PRESERVEASPECTRATIO_XMINYMAX    = 8,
+            SVG_PRESERVEASPECTRATIO_XMIDYMAX    = 9,
+            SVG_PRESERVEASPECTRATIO_XMAXYMAX    = 10
+        };
+
+        enum SVGMeetOrSliceType {
+            SVG_MEETORSLICE_UNKNOWN    = 0,
+            SVG_MEETORSLICE_MEET       = 1,
+            SVG_MEETORSLICE_SLICE      = 2
+        };
+
+        SVGPreserveAspectRatio();
+        virtual ~SVGPreserveAspectRatio();
+
+        void setAlign(unsigned short);
+        unsigned short align() const;
+
+        void setMeetOrSlice(unsigned short);
+        unsigned short meetOrSlice() const;
+
+        void transformRect(FloatRect& destRect, FloatRect& srcRect);
+        
+        AffineTransform getCTM(double logicX, double logicY,
+                               double logicWidth, double logicHeight,
+                               double physX, double physY,
+                               double physWidth, double physHeight) const;
+
+        template<class Consumer>
+        static bool parsePreserveAspectRatio(Consumer* consumer, const String& value, bool validate = true)
+        {
+            bool result = false;
+            const UChar* begin = value.characters();
+            const UChar* end = begin + value.length();
+            consumer->setPreserveAspectRatioBaseValue(parsePreserveAspectRatio(begin, end, validate, result));
+            return result;
+        }
+
+        // It's recommended to use the method above, only SVGViewSpec needs this parsing method
+        static SVGPreserveAspectRatio parsePreserveAspectRatio(const UChar*& currParam, const UChar* end, bool validate, bool& result);
+
+        String valueAsString() const;
+
+    private:
+        unsigned short m_align;
+        unsigned short m_meetOrSlice;
+    };
+
+} // namespace WebCore
+
+#endif // ENABLE(SVG)
+#endif // SVGPreserveAspectRatio_h