1 files changed, 144 insertions, 0 deletions
diff --git a/WebCore/css/WebKitCSSMatrix.cpp b/WebCore/css/WebKitCSSMatrix.cpp
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+++ b/WebCore/css/WebKitCSSMatrix.cpp
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+/*
+ * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+
+#include "CSSParser.h"
+#include "CSSStyleSelector.h"
+#include "CSSMutableStyleDeclaration.h"
+#include "CSSPropertyNames.h"
+#include "ExceptionCode.h"
+#include "RenderStyle.h"
+#include "WebKitCSSMatrix.h"
+
+namespace WebCore {
+
+WebKitCSSMatrix::WebKitCSSMatrix()
+    : StyleBase(0)
+{
+}
+
+WebKitCSSMatrix::WebKitCSSMatrix(const WebKitCSSMatrix& m)
+    : StyleBase(0)
+    , m_matrix(m.m_matrix)
+{
+}
+
+WebKitCSSMatrix::WebKitCSSMatrix(const TransformationMatrix& m)
+    : StyleBase(0)
+    , m_matrix(m)
+{
+}
+
+WebKitCSSMatrix::WebKitCSSMatrix(const String& s, ExceptionCode& ec) 
+    : StyleBase(0)
+{
+    setMatrixValue(s, ec);
+}
+
+WebKitCSSMatrix::~WebKitCSSMatrix()
+{
+}
+
+void WebKitCSSMatrix::setMatrixValue(const String& string, ExceptionCode& ec)
+{
+    CSSParser p(useStrictParsing());
+    RefPtr<CSSMutableStyleDeclaration> styleDeclaration = CSSMutableStyleDeclaration::create();
+    if (p.parseValue(styleDeclaration.get(), CSSPropertyWebkitTransform, string, true)) {
+        // Convert to TransformOperations. This can fail if a property 
+        // requires style (i.e., param uses 'ems' or 'exs')
+        PassRefPtr<CSSValue> val =  styleDeclaration->getPropertyCSSValue(CSSPropertyWebkitTransform);
+        TransformOperations operations;
+        if (!CSSStyleSelector::createTransformOperations(val.get(), 0, operations)) {
+            ec = SYNTAX_ERR;
+            return;
+        }
+        
+        // Convert transform operations to a TransformationMatrix. This can fail
+        // if a param has a percentage ('%')
+        TransformationMatrix t;
+        for (unsigned i = 0; i < operations.operations().size(); ++i) {
+            if (operations.operations()[i].get()->apply(t, IntSize(0, 0))) {
+                ec = SYNTAX_ERR;
+                return;
+            }
+        }
+        
+        // set the matrix
+        m_matrix = t;
+    } else if (!string.isEmpty()) // There is something there but parsing failed
+        ec = SYNTAX_ERR;
+}
+
+// This is a multRight (this = this * secondMatrix)
+PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::multiply(WebKitCSSMatrix* secondMatrix)
+{
+    TransformationMatrix tmp(m_matrix);
+    tmp.multiply(secondMatrix->m_matrix);
+    return WebKitCSSMatrix::create(tmp);
+}
+
+PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::inverse(ExceptionCode& ec)
+{
+    if (!m_matrix.isInvertible()) {
+        ec = NOT_SUPPORTED_ERR;
+        return 0;
+    }
+    
+    return WebKitCSSMatrix::create(m_matrix.inverse());
+}
+
+PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::translate(float x, float y)
+{
+    if (isnan(x))
+        x = 0; 
+    if (isnan(y))
+        y = 0; 
+    return WebKitCSSMatrix::create(m_matrix.translate(x, y));
+}
+
+PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::scale(float scaleX, float scaleY)
+{
+    if (isnan(scaleX))
+        scaleX = 1; 
+    if (isnan(scaleY))
+        scaleY = scaleX; 
+    return WebKitCSSMatrix::create(m_matrix.scale(scaleX,scaleY));
+}
+
+PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::rotate(float rot)
+{
+    if (isnan(rot))
+        rot = 0;
+    return WebKitCSSMatrix::create(m_matrix.rotate(rot));
+}
+
+String WebKitCSSMatrix::toString()
+{
+    return String::format("matrix(%f, %f, %f, %f, %f, %f)",
+                            m_matrix.a(), m_matrix.b(), m_matrix.c(), m_matrix.d(), m_matrix.e(), m_matrix.f());
+}
+
+} // namespace WebCore