ui/base/android/window_android.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/base/android/window_android.h"
   6
   7 #include "base/android/jni_android.h"
   8 #include "base/android/jni_array.h"
   9 #include "base/android/jni_weak_ref.h"
  10 #include "base/android/scoped_java_ref.h"
  11 #include "jni/WindowAndroid_jni.h"
  12 #include "ui/base/android/window_android_compositor.h"
  13 #include "ui/base/android/window_android_observer.h"
  14
  15 namespace ui {
  16
  17 using base::android::AttachCurrentThread;
  18 using base::android::ScopedJavaLocalRef;
  19
  20 WindowAndroid::WindowAndroid(JNIEnv* env, jobject obj, jlong vsync_period)
  21   : weak_java_window_(env, obj),
  22     compositor_(NULL),
  23     vsync_period_(base::TimeDelta::FromInternalValue(vsync_period)) {
  24 }
  25
  26 void WindowAndroid::Destroy(JNIEnv* env, jobject obj) {
  27   delete this;
  28 }
  29
  30 ScopedJavaLocalRef<jobject> WindowAndroid::GetJavaObject() {
  31   return weak_java_window_.get(AttachCurrentThread());
  32 }
  33
  34 bool WindowAndroid::RegisterWindowAndroid(JNIEnv* env) {
  35   return RegisterNativesImpl(env);
  36 }
  37
  38 WindowAndroid::~WindowAndroid() {
  39   DCHECK(!compositor_);
  40 }
  41
  42 void WindowAndroid::OnCompositingDidCommit() {
  43   FOR_EACH_OBSERVER(WindowAndroidObserver,
  44                     observer_list_,
  45                     OnCompositingDidCommit());
  46 }
  47
  48 void WindowAndroid::AddObserver(WindowAndroidObserver* observer) {
  49   if (!observer_list_.HasObserver(observer))
  50     observer_list_.AddObserver(observer);
  51 }
  52
  53 void WindowAndroid::RemoveObserver(WindowAndroidObserver* observer) {
  54   observer_list_.RemoveObserver(observer);
  55 }
  56
  57 void WindowAndroid::AttachCompositor(WindowAndroidCompositor* compositor) {
  58   if (compositor_ && compositor != compositor_)
  59     DetachCompositor();
  60
  61   compositor_ = compositor;
  62   FOR_EACH_OBSERVER(WindowAndroidObserver,
  63                     observer_list_,
  64                     OnAttachCompositor());
  65 }
  66
  67 void WindowAndroid::DetachCompositor() {
  68   compositor_ = NULL;
  69   FOR_EACH_OBSERVER(WindowAndroidObserver,
  70                     observer_list_,
  71                     OnDetachCompositor());
  72   observer_list_.Clear();
  73 }
  74
  75 void WindowAndroid::RequestVSyncUpdate() {
  76   JNIEnv* env = AttachCurrentThread();
  77   Java_WindowAndroid_requestVSyncUpdate(env, GetJavaObject().obj());
  78 }
  79
  80 void WindowAndroid::SetNeedsAnimate() {
  81   if (compositor_)
  82     compositor_->SetNeedsAnimate();
  83 }
  84
  85 void WindowAndroid::Animate(base::TimeTicks begin_frame_time) {
  86   FOR_EACH_OBSERVER(
  87       WindowAndroidObserver, observer_list_, OnAnimate(begin_frame_time));
  88 }
  89
  90 void WindowAndroid::OnVSync(JNIEnv* env, jobject obj, jlong time_micros) {
  91   base::TimeTicks frame_time(base::TimeTicks::FromInternalValue(time_micros));
  92   FOR_EACH_OBSERVER(
  93       WindowAndroidObserver,
  94       observer_list_,
  95       OnVSync(frame_time, vsync_period_));
  96   if (compositor_)
  97     compositor_->OnVSync(frame_time, vsync_period_);
  98 }
  99
 100 // ----------------------------------------------------------------------------
 101 // Native JNI methods
 102 // ----------------------------------------------------------------------------
 103
 104 jlong Init(JNIEnv* env, jobject obj, jlong vsync_period) {
 105   WindowAndroid* window = new WindowAndroid(env, obj, vsync_period);
 106   return reinterpret_cast<intptr_t>(window);
 107 }
 108
 109 }  // namespace ui