ui/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/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/android/window_android_compositor.h"
  13 #include "ui/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)
  21   : weak_java_window_(env, obj), compositor_(NULL) {
  22 }
  23
  24 void WindowAndroid::Destroy(JNIEnv* env, jobject obj) {
  25   delete this;
  26 }
  27
  28 ScopedJavaLocalRef<jobject> WindowAndroid::GetJavaObject() {
  29   return weak_java_window_.get(AttachCurrentThread());
  30 }
  31
  32 bool WindowAndroid::RegisterWindowAndroid(JNIEnv* env) {
  33   return RegisterNativesImpl(env);
  34 }
  35
  36 WindowAndroid::~WindowAndroid() {
  37   DCHECK(!compositor_);
  38 }
  39
  40 void WindowAndroid::OnCompositingDidCommit() {
  41   FOR_EACH_OBSERVER(WindowAndroidObserver,
  42                     observer_list_,
  43                     OnCompositingDidCommit());
  44 }
  45
  46 void WindowAndroid::AddObserver(WindowAndroidObserver* observer) {
  47   if (!observer_list_.HasObserver(observer))
  48     observer_list_.AddObserver(observer);
  49 }
  50
  51 void WindowAndroid::RemoveObserver(WindowAndroidObserver* observer) {
  52   observer_list_.RemoveObserver(observer);
  53 }
  54
  55 void WindowAndroid::AttachCompositor(WindowAndroidCompositor* compositor) {
  56   if (compositor_ && compositor != compositor_)
  57     DetachCompositor();
  58
  59   compositor_ = compositor;
  60   FOR_EACH_OBSERVER(WindowAndroidObserver,
  61                     observer_list_,
  62                     OnAttachCompositor());
  63 }
  64
  65 void WindowAndroid::DetachCompositor() {
  66   compositor_ = NULL;
  67   FOR_EACH_OBSERVER(WindowAndroidObserver,
  68                     observer_list_,
  69                     OnDetachCompositor());
  70   observer_list_.Clear();
  71 }
  72
  73 void WindowAndroid::RequestVSyncUpdate() {
  74   JNIEnv* env = AttachCurrentThread();
  75   Java_WindowAndroid_requestVSyncUpdate(env, GetJavaObject().obj());
  76 }
  77
  78 void WindowAndroid::SetNeedsAnimate() {
  79   if (compositor_)
  80     compositor_->SetNeedsAnimate();
  81 }
  82
  83 void WindowAndroid::Animate(base::TimeTicks begin_frame_time) {
  84   FOR_EACH_OBSERVER(
  85       WindowAndroidObserver, observer_list_, OnAnimate(begin_frame_time));
  86 }
  87
  88 void WindowAndroid::OnVSync(JNIEnv* env,
  89                             jobject obj,
  90                             jlong time_micros,
  91                             jlong period_micros) {
  92   base::TimeTicks frame_time(base::TimeTicks::FromInternalValue(time_micros));
  93   base::TimeDelta vsync_period(
  94       base::TimeDelta::FromMicroseconds(period_micros));
  95   FOR_EACH_OBSERVER(
  96       WindowAndroidObserver,
  97       observer_list_,
  98       OnVSync(frame_time, vsync_period));
  99   if (compositor_)
 100     compositor_->OnVSync(frame_time, vsync_period);
 101 }
 102
 103 // ----------------------------------------------------------------------------
 104 // Native JNI methods
 105 // ----------------------------------------------------------------------------
 106
 107 jlong Init(JNIEnv* env, jobject obj) {
 108   WindowAndroid* window = new WindowAndroid(env, obj);
 109   return reinterpret_cast<intptr_t>(window);
 110 }
 111
 112 }  // namespace ui