1 files changed, 58 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/platform/transforms/matrix_transform_operation.cc b/chromium/third_party/blink/renderer/platform/transforms/matrix_transform_operation.cc
new file mode 100644
index 00000000000..531d274d7eb
--- /dev/null
+++ b/chromium/third_party/blink/renderer/platform/transforms/matrix_transform_operation.cc
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ *
+ * 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 "third_party/blink/renderer/platform/transforms/matrix_transform_operation.h"
+
+#include <algorithm>
+
+namespace blink {
+
+scoped_refptr<TransformOperation> MatrixTransformOperation::Blend(
+    const TransformOperation* from,
+    double progress,
+    bool blend_to_identity) {
+  if (from && !from->IsSameType(*this))
+    return this;
+
+  // convert the TransformOperations into matrices
+  FloatSize size;
+  TransformationMatrix from_t;
+  TransformationMatrix to_t(a_, b_, c_, d_, e_, f_);
+  if (from) {
+    const MatrixTransformOperation* m =
+        static_cast<const MatrixTransformOperation*>(from);
+    from_t.SetMatrix(m->a_, m->b_, m->c_, m->d_, m->e_, m->f_);
+  }
+
+  if (blend_to_identity)
+    std::swap(from_t, to_t);
+
+  to_t.Blend(from_t, progress);
+  return MatrixTransformOperation::Create(to_t.A(), to_t.B(), to_t.C(),
+                                          to_t.D(), to_t.E(), to_t.F());
+}
+
+scoped_refptr<TransformOperation> MatrixTransformOperation::Zoom(
+    double factor) {
+  return Create(a_, b_, c_, d_, e_ * factor, f_ * factor);
+}
+
+}  // namespace blink