Part 10 of cc/ directory shuffles: layers

Continuation of https://src.chromium.org/viewvc/chrome?view=rev&revision=188681

BUG=190824
TBR=enne@chromium.org, piman@chromium.org, jschuh@chromium.org, joth@chromium.org

Review URL: https://codereview.chromium.org/12916002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@188703 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 64 insertions, 0 deletions

diff --git a/cc/layers/heads_up_display_layer.cc b/cc/layers/heads_up_display_layer.cc
new file mode 100644
index 0000000..56d7c96
--- /dev/null
+++ b/cc/layers/heads_up_display_layer.cc
@@ -0,0 +1,64 @@
+// Copyright 2012 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/heads_up_display_layer.h"
+
+#include "base/debug/trace_event.h"
+#include "cc/layers/heads_up_display_layer_impl.h"
+#include "cc/trees/layer_tree_host.h"
+
+namespace cc {
+
+scoped_refptr<HeadsUpDisplayLayer> HeadsUpDisplayLayer::Create() {
+  return make_scoped_refptr(new HeadsUpDisplayLayer());
+}
+
+HeadsUpDisplayLayer::HeadsUpDisplayLayer() : Layer() {
+  SetBounds(gfx::Size(256, 256));
+}
+
+HeadsUpDisplayLayer::~HeadsUpDisplayLayer() {}
+
+void HeadsUpDisplayLayer::Update(ResourceUpdateQueue*,
+                                 const OcclusionTracker*,
+                                 RenderingStats*) {
+  const LayerTreeDebugState& debug_state = layer_tree_host()->debug_state();
+  int max_texture_size =
+      layer_tree_host()->GetRendererCapabilities().max_texture_size;
+
+  int device_viewport_in_layout_pixels_width =
+      layer_tree_host()->device_viewport_size().width() /
+      layer_tree_host()->device_scale_factor();
+  int device_viewport_in_layout_pixels_height =
+      layer_tree_host()->device_viewport_size().height() /
+      layer_tree_host()->device_scale_factor();
+
+  gfx::Size bounds;
+  gfx::Transform matrix;
+  matrix.MakeIdentity();
+
+  if (debug_state.showPlatformLayerTree || debug_state.showHudRects()) {
+    int width =
+        std::min(max_texture_size, device_viewport_in_layout_pixels_width);
+    int height =
+        std::min(max_texture_size, device_viewport_in_layout_pixels_height);
+    bounds = gfx::Size(width, height);
+  } else {
+    bounds = gfx::Size(256, 256);
+    matrix.Translate(device_viewport_in_layout_pixels_width - 256.0, 0.0);
+  }
+
+  SetBounds(bounds);
+  SetTransform(matrix);
+}
+
+bool HeadsUpDisplayLayer::DrawsContent() const { return true; }
+
+scoped_ptr<LayerImpl> HeadsUpDisplayLayer::CreateLayerImpl(
+    LayerTreeImpl* treeImpl) {
+  return HeadsUpDisplayLayerImpl::Create(treeImpl, layer_id_).
+      PassAs<LayerImpl>();
+}
+
+}  // namespace cc