Refactor Vr activity into ChromeTabbedActivity.

chrome/browser/android/vr_shell/vr_shell.h

 // Copyright 2016 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_VR_SHELL_VR_SHELL_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_
 
 #include <jni.h>
 #include <memory>
+#include <vector>
 
 #include "base/android/jni_weak_ref.h"
 #include "base/macros.h"
+#include "chrome/browser/android/vr_shell/ui_elements.h"
 #include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/gvr.h"
 #include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/gvr_types.h"
 
+
 namespace vr_shell {
 
 class VrShellRenderer;
 
-class ContentRect {
- public:
-  ContentRect();
-  ~ContentRect();
-  void SetIdentity();
-  void Translate(float x, float y, float z);
-  gvr::Mat4f transfrom_to_world;
-  int content_texture_handle;
-};
-
 class VrShell {
  public:
   VrShell(JNIEnv* env, jobject obj);
 
   void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
-
   void GvrInit(JNIEnv* env,
                const base::android::JavaParamRef<jobject>& obj,
                jlong native_gvr_api);
   void InitializeGl(JNIEnv* env,
                     const base::android::JavaParamRef<jobject>& obj,
                     jint texture_data_handle);
   void DrawFrame(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void OnPause(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void OnResume(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
 
  private:
   ~VrShell();
-
   void DrawEye(const gvr::Mat4f& view_matrix,
                const gvr::BufferViewport& params);
-  void DrawContentRect();
+  void DrawUI();
 
-  std::unique_ptr<ContentRect> content_rect_;
+  void UpdateTransforms(float screenWidthMeters,

[David Trainor- moved to gerrit, 2016/09/08 05:49:30]

fix variable names, same for others.  Will stop nitting on this :).

[mthiesse, 2016/09/08 17:44:41]

haha sorry about that. I've scoured through the code; hopefully I caught all of
them.

[David Trainor- moved to gerrit, 2016/09/09 06:28:29]

No worries!  I do the same thing especially moving from Java to Native :).

+                        float screenHeightMeters,
+                        float screenTilt);
+
+  // samplerExternalOES texture data for desktop content image.
+  jint content_texture_id_ = 0;
+
+  // Constant taken from treasure_hunt demo.
+  static constexpr long kPredictionTimeWithoutVsyncNanos = 50000000;

[David Trainor- moved to gerrit, 2016/09/08 05:49:30]

Should these be in an anonymous namespace in the cc file?  Why public in the
header?

[mthiesse, 2016/09/08 17:44:41]

There's no reason to have these in the header, rather than the cc file, other
than style preferences. I've moved them to the cc file.

[David Trainor- moved to gerrit, 2016/09/09 06:28:29]

Yeah sorry for the nit about this.  For me it makes it a bit easier to see how
the class works without the internal detail constants.

+
+  static constexpr float kZNear = 0.1f;
+  static constexpr float kZFar = 1000.0f;
+
+  static constexpr gvr::Vec3f kDesktopPositionDefault = {0.0f, 0.0f, -2.0f};
+  static constexpr float kDesktopHeightDefault = 1.6f;
+
+  // Screen angle in degrees. 0 = vertical, positive = top closer.
+  static constexpr float kDesktopScreenTiltDefault = 0;
+
+  static constexpr float kScreenHeightMeters = 2.0f;
+  static constexpr float kScreenWidthMeters = 2.0f;
+
+  float desktop_screen_tilt_ = kDesktopScreenTiltDefault;
+  float desktop_height_ = kDesktopHeightDefault;
+
+  ContentRectangle* desktop_plane_;
+  gvr::Vec3f desktop_position_ = kDesktopPositionDefault;
+
+  std::vector<std::unique_ptr<ContentRectangle>> ui_rects_;
+
   std::unique_ptr<gvr::GvrApi> gvr_api_;
   std::unique_ptr<gvr::BufferViewportList> buffer_viewport_list_;
   std::unique_ptr<gvr::BufferViewport> buffer_viewport_;
   std::unique_ptr<gvr::SwapChain> swap_chain_;
 
   gvr::Mat4f view_matrix_;
   gvr::Mat4f projection_matrix_;
 
   gvr::Mat4f head_pose_;
 
   gvr::Sizei render_size_;
 
   std::unique_ptr<VrShellRenderer> vr_shell_renderer_;
-
   base::android::ScopedJavaGlobalRef<jobject> j_vr_shell_;
 
   DISALLOW_COPY_AND_ASSIGN(VrShell);
 };
 
 bool RegisterVrShell(JNIEnv* env);
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_