1 files changed, 122 insertions, 0 deletions
diff --git a/WebCore/svg/SVGFitToViewBox.cpp b/WebCore/svg/SVGFitToViewBox.cpp
new file mode 100644
index 0000000..2cf3dd7
--- /dev/null
+++ b/WebCore/svg/SVGFitToViewBox.cpp
@@ -0,0 +1,122 @@
+/*
+    Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
+                  2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
+
+    This file is part of the KDE project
+
+    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.
+*/
+
+#include "config.h"
+
+#if ENABLE(SVG)
+#include "SVGFitToViewBox.h"
+
+#include "AffineTransform.h"
+#include "FloatRect.h"
+#include "SVGDocumentExtensions.h"
+#include "SVGNames.h"
+#include "SVGParserUtilities.h"
+#include "SVGPreserveAspectRatio.h"
+#include "StringImpl.h"
+
+namespace WebCore {
+
+SVGFitToViewBox::SVGFitToViewBox()
+    : m_viewBox()
+    , m_preserveAspectRatio(SVGPreserveAspectRatio::create())
+{
+}
+
+SVGFitToViewBox::~SVGFitToViewBox()
+{
+}
+
+ANIMATED_PROPERTY_DEFINITIONS_WITH_CONTEXT(SVGFitToViewBox, FloatRect, Rect, rect, ViewBox, viewBox, SVGNames::viewBoxAttr, m_viewBox)
+ANIMATED_PROPERTY_DEFINITIONS_WITH_CONTEXT(SVGFitToViewBox, SVGPreserveAspectRatio*, PreserveAspectRatio, preserveAspectRatio, PreserveAspectRatio, preserveAspectRatio, SVGNames::preserveAspectRatioAttr, m_preserveAspectRatio.get())
+
+bool SVGFitToViewBox::parseViewBox(const UChar*& c, const UChar* end, float& x, float& y, float& w, float& h, bool validate)
+{
+    Document* doc = contextElement()->document();
+    String str(c, end - c);
+
+    skipOptionalSpaces(c, end);
+
+    bool valid = (parseNumber(c, end, x) && parseNumber(c, end, y) &&
+          parseNumber(c, end, w) && parseNumber(c, end, h, false));
+    if (!validate)
+        return true;
+    if (!valid) {
+        doc->accessSVGExtensions()->reportWarning("Problem parsing viewBox=\"" + str + "\"");
+        return false;
+    }
+
+    if (w < 0.0) { // check that width is positive
+        doc->accessSVGExtensions()->reportError("A negative value for ViewBox width is not allowed");
+        return false;
+    } else if (h < 0.0) { // check that height is positive
+        doc->accessSVGExtensions()->reportError("A negative value for ViewBox height is not allowed");
+        return false;
+    } else {
+        skipOptionalSpaces(c, end);
+        if (c < end) { // nothing should come after the last, fourth number
+            doc->accessSVGExtensions()->reportWarning("Problem parsing viewBox=\"" + str + "\"");
+            return false;
+        }
+    }
+
+    return true;
+}
+
+AffineTransform SVGFitToViewBox::viewBoxToViewTransform(float viewWidth, float viewHeight) const
+{
+    FloatRect viewBoxRect = viewBox();
+    if (!viewBoxRect.width() || !viewBoxRect.height())
+        return AffineTransform();
+
+    return preserveAspectRatio()->getCTM(viewBoxRect.x(),
+            viewBoxRect.y(), viewBoxRect.width(), viewBoxRect.height(),
+            0, 0, viewWidth, viewHeight);
+}
+
+bool SVGFitToViewBox::parseMappedAttribute(MappedAttribute* attr)
+{
+    if (attr->name() == SVGNames::viewBoxAttr) {
+        float x = 0.0f, y = 0.0f, w = 0.0f, h = 0.0f;
+        const UChar* c = attr->value().characters();
+        const UChar* end = c + attr->value().length();
+        if (parseViewBox(c, end, x, y, w, h))
+            setViewBoxBaseValue(FloatRect(x, y, w, h));
+        return true;
+    } else if (attr->name() == SVGNames::preserveAspectRatioAttr) {
+        const UChar* c = attr->value().characters();
+        const UChar* end = c + attr->value().length();
+        preserveAspectRatioBaseValue()->parsePreserveAspectRatio(c, end);
+        return true;
+    }
+
+    return false;
+}
+
+bool SVGFitToViewBox::isKnownAttribute(const QualifiedName& attrName)
+{
+    return (attrName == SVGNames::viewBoxAttr ||
+            attrName == SVGNames::preserveAspectRatioAttr);
+}
+
+}
+
+#endif // ENABLE(SVG)