Upstream more layers, decoration title, layer_title_cache

chrome/browser/android/compositor/layer_title_cache.h

+// Copyright 2014 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.
+
+#ifndef CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_TITLE_CACHE_H_
+#define CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_TITLE_CACHE_H_
+
+#include <jni.h>
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_weak_ref.h"
+#include "base/bind.h"
+#include "base/id_map.h"
+#include "cc/resources/ui_resource_client.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "ui/gfx/size.h"
+#include "ui/gfx/transform.h"
+
+namespace cc {
+class Layer;
+class UIResourceLayer;
+}
+
+namespace ui {
+class ResourceManager;
+}
+
+namespace chrome {
+namespace android {
+
+class DecorationTitle;
+
+// A native component of the Java LayerTitleCache class.  This class
+// will build and maintain layers that represent the cached titles in
+// the Java class.
+class LayerTitleCache {
+ public:
+  static LayerTitleCache* FromJavaObject(jobject jobj);
+
+  LayerTitleCache(JNIEnv* env,
+                  jobject jobj,
+                  jint fade_width,
+                  jint favicon_start_padding,
+                  jint favicon_end_padding,
+                  jint spinner_resource_id,
+                  jint spinner_incognito_resource_id);
+  void Destroy(JNIEnv* env, jobject obj);
+
+  // Called from Java, updates a native cc::Layer based on the new texture
+  // information.
+  void UpdateLayer(JNIEnv* env,
+                   jobject obj,
+                   jint tab_id,
+                   jint title_resource_id,
+                   jint favicon_resource_id,
+                   bool is_incognito,
+                   bool is_rtl);
+
+  void ClearExcept(JNIEnv* env, jobject obj, jint except_id);
+
+  // Returns the layer that represents the title of tab of tab_id.
+  // Returns NULL if no layer can be found.
+  DecorationTitle* GetTitleLayer(int tab_id);
+
+  void SetResourceManager(ui::ResourceManager* resource_manager);
+
+ private:
+  virtual ~LayerTitleCache();
+
+  IDMap<DecorationTitle, IDMapOwnPointer> layer_cache_;
+
+  JavaObjectWeakGlobalRef weak_java_title_cache_;
+  int fade_width_;
+  int favicon_start_padding_;
+  int favicon_end_padding_;
+
+  int spinner_resource_id_;
+  int spinner_incognito_resource_id_;
+
+  ui::ResourceManager* resource_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(LayerTitleCache);
+};
+
+bool RegisterLayerTitleCache(JNIEnv* env);
+
+}  // namespace android
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_TITLE_CACHE_H_