Initial commit of the blimp/ folder and target

blimp/client/compositor/test/dummy_layer_driver.cc

+// Copyright 2015 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 "blimp/client/compositor/test/dummy_layer_driver.h"
+
+#include "base/bind.h"
+#include "base/location.h"
+#include "base/task_runner.h"
+#include "base/thread_task_runner_handle.h"
+#include "cc/layers/layer.h"
+#include "cc/layers/solid_color_layer.h"
+#include "cc/trees/layer_tree_settings.h"
+#include "ui/gfx/geometry/size.h"
+
+namespace blimp {
+
+DummyLayerDriver::DummyLayerDriver()
+    : layer_(cc::SolidColorLayer::Create(cc::LayerSettings())),
+      animation_running_(false),
+      weak_factory_(this) {
+  layer_->SetIsDrawable(true);
+  layer_->SetBackgroundColor(SK_ColorBLUE);
+  layer_->SetBounds(gfx::Size(300, 300));
+}
+
+DummyLayerDriver::~DummyLayerDriver() {}
+
+void DummyLayerDriver::SetParentLayer(scoped_refptr<cc::Layer> layer) {
+  // This will automatically remove layer_ from the previous layer.
+  layer->AddChild(layer_);
+
+  // If we're not expecting another animation step, start one now.
+  if (!animation_running_) {
+    animation_running_ = true;
+    StepAnimation();
+  }
+}
+
+void DummyLayerDriver::StepAnimation() {
+  // Detached from the cc::LayerTreeHost. Stop doing work.
+  if (!layer_->layer_tree_host()) {
+    animation_running_ = false;
+    return;
+  }
+
+  // Fun with colors
+  SkColor color = layer_->background_color();
+  color = SkColorSetRGB((SkColorGetR(color) + 5) % 255,
+                        (SkColorGetG(color) + 3) % 255,
+                        (SkColorGetB(color) + 1) % 255);
+  layer_->SetBackgroundColor(color);
+
+  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
+      FROM_HERE,
+      base::Bind(&DummyLayerDriver::StepAnimation, weak_factory_.GetWeakPtr()),
+      base::TimeDelta::FromMilliseconds(16));
+}
+
+}  // namespace blimp