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/* -*- Mode: c++; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "AndroidContentController.h"
#include "AndroidBridge.h"
#include "base/message_loop.h"
#include "mozilla/layers/APZCCallbackHelper.h"
#include "mozilla/layers/IAPZCTreeManager.h"
#include "nsIObserverService.h"
#include "nsLayoutUtils.h"
#include "nsWindow.h"
using mozilla::layers::IAPZCTreeManager;
namespace mozilla {
namespace widget {
void
AndroidContentController::Destroy()
{
mAndroidWindow = nullptr;
ChromeProcessController::Destroy();
}
void
AndroidContentController::NotifyDefaultPrevented(IAPZCTreeManager* aManager,
uint64_t aInputBlockId,
bool aDefaultPrevented)
{
if (!AndroidBridge::IsJavaUiThread()) {
// The notification must reach the APZ on the Java UI thread (aka the
// APZ "controller" thread) but we get it from the Gecko thread, so we
// have to throw it onto the other thread.
AndroidBridge::Bridge()->PostTaskToUiThread(NewRunnableMethod<uint64_t, bool>(
aManager, &IAPZCTreeManager::ContentReceivedInputBlock,
aInputBlockId, aDefaultPrevented), 0);
return;
}
aManager->ContentReceivedInputBlock(aInputBlockId, aDefaultPrevented);
}
void
AndroidContentController::DispatchSingleTapToObservers(const LayoutDevicePoint& aPoint,
const ScrollableLayerGuid& aGuid) const
{
nsIContent* content = nsLayoutUtils::FindContentFor(aGuid.mScrollId);
nsPresContext* context = content
? mozilla::layers::APZCCallbackHelper::GetPresContextForContent(content)
: nullptr;
if (!context) {
return;
}
CSSPoint point = mozilla::layers::APZCCallbackHelper::ApplyCallbackTransform(
aPoint / context->CSSToDevPixelScale(), aGuid);
nsPresContext* rcdContext = context->GetToplevelContentDocumentPresContext();
if (rcdContext && rcdContext->PresShell()->ScaleToResolution()) {
// We need to convert from the root document to the root content document,
// by unapplying the resolution that's on the content document.
const float resolution = rcdContext->PresShell()->GetResolution();
point.x /= resolution;
point.y /= resolution;
}
CSSIntPoint rounded = RoundedToInt(point);
nsAppShell::PostEvent([rounded] {
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
if (!obsServ) {
return;
}
nsPrintfCString data("{\"x\":%d,\"y\":%d}", rounded.x, rounded.y);
obsServ->NotifyObservers(nullptr, "Gesture:SingleTap",
NS_ConvertASCIItoUTF16(data).get());
});
}
void
AndroidContentController::HandleTap(TapType aType, const LayoutDevicePoint& aPoint,
Modifiers aModifiers,
const ScrollableLayerGuid& aGuid,
uint64_t aInputBlockId)
{
// This function will get invoked first on the Java UI thread, and then
// again on the main thread (because of the code in ChromeProcessController::
// HandleTap). We want to post the SingleTap message once; it can be
// done from either thread but we need access to the callback transform
// so we do it from the main thread.
if (NS_IsMainThread() &&
(aType == TapType::eSingleTap || aType == TapType::eSecondTap)) {
DispatchSingleTapToObservers(aPoint, aGuid);
}
ChromeProcessController::HandleTap(aType, aPoint, aModifiers, aGuid, aInputBlockId);
}
void
AndroidContentController::PostDelayedTask(already_AddRefed<Runnable> aTask, int aDelayMs)
{
AndroidBridge::Bridge()->PostTaskToUiThread(Move(aTask), aDelayMs);
}
void
AndroidContentController::UpdateOverscrollVelocity(const float aX, const float aY, const bool aIsRootContent)
{
if (aIsRootContent && mAndroidWindow) {
mAndroidWindow->UpdateOverscrollVelocity(aX, aY);
}
}
void
AndroidContentController::UpdateOverscrollOffset(const float aX, const float aY, const bool aIsRootContent)
{
if (aIsRootContent && mAndroidWindow) {
mAndroidWindow->UpdateOverscrollOffset(aX, aY);
}
}
void
AndroidContentController::SetScrollingRootContent(const bool isRootContent)
{
if (mAndroidWindow) {
mAndroidWindow->SetScrollingRootContent(isRootContent);
}
}
void
AndroidContentController::NotifyAPZStateChange(const ScrollableLayerGuid& aGuid,
APZStateChange aChange,
int aArg)
{
// This function may get invoked twice, if the first invocation is not on
// the main thread then the ChromeProcessController version of this function
// will redispatch to the main thread. We want to make sure that our handling
// only happens on the main thread.
ChromeProcessController::NotifyAPZStateChange(aGuid, aChange, aArg);
if (NS_IsMainThread()) {
nsCOMPtr<nsIObserverService> observerService = mozilla::services::GetObserverService();
if (aChange == layers::GeckoContentController::APZStateChange::eTransformEnd) {
// This is used by tests to determine when the APZ is done doing whatever
// it's doing. XXX generify this as needed when writing additional tests.
observerService->NotifyObservers(nullptr, "APZ:TransformEnd", nullptr);
observerService->NotifyObservers(nullptr, "PanZoom:StateChange", u"NOTHING");
} else if (aChange == layers::GeckoContentController::APZStateChange::eTransformBegin) {
observerService->NotifyObservers(nullptr, "PanZoom:StateChange", u"PANNING");
}
}
}
} // namespace widget
} // namespace mozilla
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