[GeometryInterface] Add fromFloat32Array & fromFloat64Array function

third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef DOMMatrixReadOnly_h
 #define DOMMatrixReadOnly_h
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/dom/DOMTypedArray.h"
 #include "platform/heap/Handle.h"
 #include "platform/transforms/TransformationMatrix.h"
 #include <memory>
 
 namespace blink {
 
 class DOMMatrix;
 
 class DOMMatrixReadOnly : public GarbageCollectedFinalized<DOMMatrixReadOnly>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static DOMMatrixReadOnly* create(Vector<double>, ExceptionState&);
+    static DOMMatrixReadOnly* fromFloat32Array(DOMFloat32Array*, ExceptionState&);
+    static DOMMatrixReadOnly* fromFloat64Array(DOMFloat64Array*, ExceptionState&);
+
     virtual ~DOMMatrixReadOnly();
 
     double a() const { return m_matrix->m11(); }
     double b() const { return m_matrix->m12(); }
     double c() const { return m_matrix->m21(); }
     double d() const { return m_matrix->m22(); }
     double e() const { return m_matrix->m41(); }
     double f() const { return m_matrix->m42(); }
 
     double m11() const { return m_matrix->m11(); }
@@ skipping 32 matching lines @@
     DOMFloat64Array* toFloat64Array() const;
 
     const String toString() const;
 
     const TransformationMatrix& matrix() const { return *m_matrix; }
 
     DEFINE_INLINE_TRACE() { }
 
 protected:
     DOMMatrixReadOnly() {}
+
+    template <typename T>
+    DOMMatrixReadOnly(T sequence, int size)
+    {
+        if (size == 6) {
+            m_matrix = TransformationMatrix::create(
+                sequence[0], sequence[1], sequence[2], sequence[3],
+                sequence[4], sequence[5]);
+            m_is2D = true;
+        } else if (size == 16) {
+            m_matrix = TransformationMatrix::create(
+                sequence[0], sequence[1], sequence[2], sequence[3],
+                sequence[4], sequence[5], sequence[6], sequence[7],
+                sequence[8], sequence[9], sequence[10], sequence[11],
+                sequence[12], sequence[13], sequence[14], sequence[15]);
+            m_is2D = false;
+        } else {
+            NOTREACHED();
+        }
+    }
+
     // TransformationMatrix needs to be 16-byte aligned. PartitionAlloc
     // supports 16-byte alignment but Oilpan doesn't. So we use an std::unique_ptr
     // to allocate TransformationMatrix on PartitionAlloc.
     // TODO(oilpan): Oilpan should support 16-byte aligned allocations.
     std::unique_ptr<TransformationMatrix> m_matrix;
     bool m_is2D;
-
-private:
-    DOMMatrixReadOnly(Vector<double> sequence);
 };
 
 } // namespace blink
 
 #endif