widget/android/AndroidContentController.cpp

   1 /* -*- Mode: c++; c-basic-offset: 2; tab-width: 20; indent-tabs-mode: nil; -*-
   2  * This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "AndroidContentController.h"
   7
   8 #include "AndroidBridge.h"
   9 #include "base/message_loop.h"
  10 #include "mozilla/layers/APZCCallbackHelper.h"
  11 #include "mozilla/layers/IAPZCTreeManager.h"
  12 #include "nsIObserverService.h"
  13 #include "nsLayoutUtils.h"
  14 #include "nsWindow.h"
  15
  16 using mozilla::layers::IAPZCTreeManager;
  17
  18 namespace mozilla {
  19 namespace widget {
  20
  21 void AndroidContentController::Destroy() {
  22   mAndroidWindow = nullptr;
  23   ChromeProcessController::Destroy();
  24 }
  25
  26 void AndroidContentController::UpdateOverscrollVelocity(
  27     const ScrollableLayerGuid& aGuid, const float aX, const float aY,
  28     const bool aIsRootContent) {
  29   if (aIsRootContent && mAndroidWindow) {
  30     mAndroidWindow->UpdateOverscrollVelocity(aX, aY);
  31   }
  32 }
  33
  34 void AndroidContentController::UpdateOverscrollOffset(
  35     const ScrollableLayerGuid& aGuid, const float aX, const float aY,
  36     const bool aIsRootContent) {
  37   if (aIsRootContent && mAndroidWindow) {
  38     mAndroidWindow->UpdateOverscrollOffset(aX, aY);
  39   }
  40 }
  41
  42 void AndroidContentController::NotifyAPZStateChange(
  43     const ScrollableLayerGuid& aGuid, APZStateChange aChange, int aArg) {
  44   // This function may get invoked twice, if the first invocation is not on
  45   // the main thread then the ChromeProcessController version of this function
  46   // will redispatch to the main thread. We want to make sure that our handling
  47   // only happens on the main thread.
  48   ChromeProcessController::NotifyAPZStateChange(aGuid, aChange, aArg);
  49   if (NS_IsMainThread()) {
  50     nsCOMPtr<nsIObserverService> observerService =
  51         mozilla::services::GetObserverService();
  52     if (aChange ==
  53         layers::GeckoContentController::APZStateChange::eTransformEnd) {
  54       // This is used by tests to determine when the APZ is done doing whatever
  55       // it's doing. XXX generify this as needed when writing additional tests.
  56       observerService->NotifyObservers(nullptr, "APZ:TransformEnd", nullptr);
  57       observerService->NotifyObservers(nullptr, "PanZoom:StateChange",
  58                                        u"NOTHING");
  59     } else if (aChange == layers::GeckoContentController::APZStateChange::
  60                               eTransformBegin) {
  61       observerService->NotifyObservers(nullptr, "PanZoom:StateChange",
  62                                        u"PANNING");
  63     }
  64   }
  65 }
  66
  67 }  // namespace widget
  68 }  // namespace mozilla