1 files changed, 65 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/platform/transforms/translate_transform_operation.cc b/chromium/third_party/blink/renderer/platform/transforms/translate_transform_operation.cc
new file mode 100644
index 00000000000..88488a05c70
--- /dev/null
+++ b/chromium/third_party/blink/renderer/platform/transforms/translate_transform_operation.cc
@@ -0,0 +1,65 @@
+/*
+ * 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/translate_transform_operation.h"
+
+#include "third_party/blink/renderer/platform/animation/animation_utilities.h"
+
+namespace blink {
+
+scoped_refptr<TransformOperation> TranslateTransformOperation::Blend(
+    const TransformOperation* from,
+    double progress,
+    bool blend_to_identity) {
+  if (from && !from->CanBlendWith(*this))
+    return this;
+
+  const Length zero_length(0, kFixed);
+  if (blend_to_identity) {
+    return TranslateTransformOperation::Create(
+        zero_length.Blend(x_, progress, kValueRangeAll),
+        zero_length.Blend(y_, progress, kValueRangeAll),
+        blink::Blend(z_, 0., progress), type_);
+  }
+
+  const auto* from_op = ToTranslateTransformOperation(from);
+  const Length& from_x = from_op ? from_op->x_ : zero_length;
+  const Length& from_y = from_op ? from_op->y_ : zero_length;
+  double from_z = from_op ? from_op->z_ : 0;
+  return TranslateTransformOperation::Create(
+      x_.Blend(from_x, progress, kValueRangeAll),
+      y_.Blend(from_y, progress, kValueRangeAll),
+      blink::Blend(from_z, z_, progress), type_);
+}
+
+bool TranslateTransformOperation::CanBlendWith(
+    const TransformOperation& other) const {
+  return other.GetType() == kTranslate || other.GetType() == kTranslateX ||
+         other.GetType() == kTranslateY || other.GetType() == kTranslateZ ||
+         other.GetType() == kTranslate3D;
+}
+
+scoped_refptr<TranslateTransformOperation>
+TranslateTransformOperation::ZoomTranslate(double factor) {
+  return Create(x_.Zoom(factor), y_.Zoom(factor), z_ * factor, type_);
+}
+
+}  // namespace blink