1 files changed, 58 insertions, 0 deletions
diff --git a/chromium/cc/layers/picture_image_layer.cc b/chromium/cc/layers/picture_image_layer.cc
new file mode 100644
index 00000000000..03e3a9e0157
--- /dev/null
+++ b/chromium/cc/layers/picture_image_layer.cc
@@ -0,0 +1,58 @@
+// Copyright 2010 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.
+
+#include "cc/layers/picture_image_layer.h"
+
+#include "cc/layers/picture_image_layer_impl.h"
+#include "third_party/skia/include/core/SkCanvas.h"
+
+namespace cc {
+
+scoped_refptr<PictureImageLayer> PictureImageLayer::Create() {
+  return make_scoped_refptr(new PictureImageLayer());
+}
+
+PictureImageLayer::PictureImageLayer() : PictureLayer(this) {}
+
+PictureImageLayer::~PictureImageLayer() {
+  ClearClient();
+}
+
+scoped_ptr<LayerImpl> PictureImageLayer::CreateLayerImpl(
+    LayerTreeImpl* tree_impl) {
+  return PictureImageLayerImpl::Create(tree_impl, id()).PassAs<LayerImpl>();
+}
+
+bool PictureImageLayer::DrawsContent() const {
+  return !bitmap_.isNull() && PictureLayer::DrawsContent();
+}
+
+void PictureImageLayer::SetBitmap(const SkBitmap& bitmap) {
+  // SetBitmap() currently gets called whenever there is any
+  // style change that affects the layer even if that change doesn't
+  // affect the actual contents of the image (e.g. a CSS animation).
+  // With this check in place we avoid unecessary texture uploads.
+  if (bitmap.pixelRef() && bitmap.pixelRef() == bitmap_.pixelRef())
+    return;
+
+  bitmap_ = bitmap;
+  SetNeedsDisplay();
+}
+
+void PictureImageLayer::PaintContents(SkCanvas* canvas,
+                                      gfx::Rect clip,
+                                      gfx::RectF* opaque) {
+  if (!bitmap_.width() || !bitmap_.height())
+    return;
+
+  SkScalar content_to_layer_scale_x =
+      SkFloatToScalar(static_cast<float>(bounds().width()) / bitmap_.width());
+  SkScalar content_to_layer_scale_y =
+      SkFloatToScalar(static_cast<float>(bounds().height()) / bitmap_.height());
+  canvas->scale(content_to_layer_scale_x, content_to_layer_scale_y);
+
+  canvas->drawBitmap(bitmap_, 0, 0);
+}
+
+}  // namespace cc