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