summaryrefslogtreecommitdiffstats
path: root/gfx/layers/apz/util/ChromeProcessController.cpp
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /gfx/layers/apz/util/ChromeProcessController.cpp
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/layers/apz/util/ChromeProcessController.cpp')
-rw-r--r--gfx/layers/apz/util/ChromeProcessController.cpp356
1 files changed, 356 insertions, 0 deletions
diff --git a/gfx/layers/apz/util/ChromeProcessController.cpp b/gfx/layers/apz/util/ChromeProcessController.cpp
new file mode 100644
index 0000000000..d16466ad7a
--- /dev/null
+++ b/gfx/layers/apz/util/ChromeProcessController.cpp
@@ -0,0 +1,356 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "ChromeProcessController.h"
+
+#include "MainThreadUtils.h" // for NS_IsMainThread()
+#include "base/task.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/layers/CompositorBridgeParent.h"
+#include "mozilla/layers/APZCCallbackHelper.h"
+#include "mozilla/layers/APZEventState.h"
+#include "mozilla/layers/APZThreadUtils.h"
+#include "mozilla/layers/IAPZCTreeManager.h"
+#include "mozilla/layers/InputAPZContext.h"
+#include "mozilla/layers/DoubleTapToZoom.h"
+#include "mozilla/layers/RepaintRequest.h"
+#include "mozilla/dom/Document.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsLayoutUtils.h"
+#include "nsView.h"
+
+static mozilla::LazyLogModule sApzChromeLog("apz.cc.chrome");
+
+using namespace mozilla;
+using namespace mozilla::layers;
+using namespace mozilla::widget;
+
+ChromeProcessController::ChromeProcessController(
+ nsIWidget* aWidget, APZEventState* aAPZEventState,
+ IAPZCTreeManager* aAPZCTreeManager)
+ : mWidget(aWidget),
+ mAPZEventState(aAPZEventState),
+ mAPZCTreeManager(aAPZCTreeManager),
+ mUIThread(NS_GetCurrentThread()) {
+ // Otherwise we're initializing mUIThread incorrectly.
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(aAPZEventState);
+ MOZ_ASSERT(aAPZCTreeManager);
+
+ mUIThread->Dispatch(
+ NewRunnableMethod("layers::ChromeProcessController::InitializeRoot", this,
+ &ChromeProcessController::InitializeRoot));
+}
+
+ChromeProcessController::~ChromeProcessController() = default;
+
+void ChromeProcessController::InitializeRoot() {
+ APZCCallbackHelper::InitializeRootDisplayport(GetPresShell());
+}
+
+void ChromeProcessController::NotifyLayerTransforms(
+ nsTArray<MatrixMessage>&& aTransforms) {
+ if (!mUIThread->IsOnCurrentThread()) {
+ mUIThread->Dispatch(
+ NewRunnableMethod<StoreCopyPassByRRef<nsTArray<MatrixMessage>>>(
+ "layers::ChromeProcessController::NotifyLayerTransforms", this,
+ &ChromeProcessController::NotifyLayerTransforms,
+ std::move(aTransforms)));
+ return;
+ }
+
+ APZCCallbackHelper::NotifyLayerTransforms(aTransforms);
+}
+
+void ChromeProcessController::RequestContentRepaint(
+ const RepaintRequest& aRequest) {
+ MOZ_ASSERT(IsRepaintThread());
+
+ if (aRequest.IsRootContent()) {
+ APZCCallbackHelper::UpdateRootFrame(aRequest);
+ } else {
+ APZCCallbackHelper::UpdateSubFrame(aRequest);
+ }
+}
+
+bool ChromeProcessController::IsRepaintThread() { return NS_IsMainThread(); }
+
+void ChromeProcessController::DispatchToRepaintThread(
+ already_AddRefed<Runnable> aTask) {
+ NS_DispatchToMainThread(std::move(aTask));
+}
+
+void ChromeProcessController::Destroy() {
+ if (!mUIThread->IsOnCurrentThread()) {
+ mUIThread->Dispatch(
+ NewRunnableMethod("layers::ChromeProcessController::Destroy", this,
+ &ChromeProcessController::Destroy));
+ return;
+ }
+
+ MOZ_ASSERT(mUIThread->IsOnCurrentThread());
+ mWidget = nullptr;
+ mAPZEventState = nullptr;
+}
+
+PresShell* ChromeProcessController::GetPresShell() const {
+ if (!mWidget) {
+ return nullptr;
+ }
+ if (nsView* view = nsView::GetViewFor(mWidget)) {
+ return view->GetPresShell();
+ }
+ return nullptr;
+}
+
+dom::Document* ChromeProcessController::GetRootDocument() const {
+ if (PresShell* presShell = GetPresShell()) {
+ return presShell->GetDocument();
+ }
+ return nullptr;
+}
+
+dom::Document* ChromeProcessController::GetRootContentDocument(
+ const ScrollableLayerGuid::ViewID& aScrollId) const {
+ nsIContent* content = nsLayoutUtils::FindContentFor(aScrollId);
+ if (!content) {
+ return nullptr;
+ }
+ if (PresShell* presShell =
+ APZCCallbackHelper::GetRootContentDocumentPresShellForContent(
+ content)) {
+ return presShell->GetDocument();
+ }
+ return nullptr;
+}
+
+void ChromeProcessController::HandleDoubleTap(
+ const mozilla::CSSPoint& aPoint, Modifiers aModifiers,
+ const ScrollableLayerGuid& aGuid) {
+ MOZ_ASSERT(mUIThread->IsOnCurrentThread());
+
+ RefPtr<dom::Document> document = GetRootContentDocument(aGuid.mScrollId);
+ if (!document.get()) {
+ return;
+ }
+
+ ZoomTarget zoomTarget = CalculateRectToZoomTo(document, aPoint);
+
+ uint32_t presShellId;
+ ScrollableLayerGuid::ViewID viewId;
+ if (APZCCallbackHelper::GetOrCreateScrollIdentifiers(
+ document->GetDocumentElement(), &presShellId, &viewId)) {
+ mAPZCTreeManager->ZoomToRect(
+ ScrollableLayerGuid(aGuid.mLayersId, presShellId, viewId), zoomTarget,
+ ZoomToRectBehavior::DEFAULT_BEHAVIOR);
+ }
+}
+
+void ChromeProcessController::HandleTap(
+ TapType aType, const mozilla::LayoutDevicePoint& aPoint,
+ Modifiers aModifiers, const ScrollableLayerGuid& aGuid,
+ uint64_t aInputBlockId) {
+ MOZ_LOG(sApzChromeLog, LogLevel::Debug,
+ ("HandleTap called with %d\n", (int)aType));
+ if (!mUIThread->IsOnCurrentThread()) {
+ MOZ_LOG(sApzChromeLog, LogLevel::Debug, ("HandleTap redispatching\n"));
+ mUIThread->Dispatch(
+ NewRunnableMethod<TapType, mozilla::LayoutDevicePoint, Modifiers,
+ ScrollableLayerGuid, uint64_t>(
+ "layers::ChromeProcessController::HandleTap", this,
+ &ChromeProcessController::HandleTap, aType, aPoint, aModifiers,
+ aGuid, aInputBlockId));
+ return;
+ }
+
+ if (!mAPZEventState) {
+ return;
+ }
+
+ RefPtr<PresShell> presShell = GetPresShell();
+ if (!presShell) {
+ return;
+ }
+ if (!presShell->GetPresContext()) {
+ return;
+ }
+ CSSToLayoutDeviceScale scale(
+ presShell->GetPresContext()->CSSToDevPixelScale());
+
+ CSSPoint point = aPoint / scale;
+
+ // Stash the guid in InputAPZContext so that when the visual-to-layout
+ // transform is applied to the event's coordinates, we use the right transform
+ // based on the scroll frame being targeted.
+ // The other values don't really matter.
+ InputAPZContext context(aGuid, aInputBlockId, nsEventStatus_eSentinel);
+
+ switch (aType) {
+ case TapType::eSingleTap:
+ mAPZEventState->ProcessSingleTap(point, scale, aModifiers, 1,
+ aInputBlockId);
+ break;
+ case TapType::eDoubleTap:
+ HandleDoubleTap(point, aModifiers, aGuid);
+ break;
+ case TapType::eSecondTap:
+ mAPZEventState->ProcessSingleTap(point, scale, aModifiers, 2,
+ aInputBlockId);
+ break;
+ case TapType::eLongTap: {
+ RefPtr<APZEventState> eventState(mAPZEventState);
+ eventState->ProcessLongTap(presShell, point, scale, aModifiers,
+ aInputBlockId);
+ break;
+ }
+ case TapType::eLongTapUp: {
+ RefPtr<APZEventState> eventState(mAPZEventState);
+ eventState->ProcessLongTapUp(presShell, point, scale, aModifiers);
+ break;
+ }
+ }
+}
+
+void ChromeProcessController::NotifyPinchGesture(
+ PinchGestureInput::PinchGestureType aType, const ScrollableLayerGuid& aGuid,
+ const LayoutDevicePoint& aFocusPoint, LayoutDeviceCoord aSpanChange,
+ Modifiers aModifiers) {
+ if (!mUIThread->IsOnCurrentThread()) {
+ mUIThread->Dispatch(
+ NewRunnableMethod<PinchGestureInput::PinchGestureType,
+ ScrollableLayerGuid, LayoutDevicePoint,
+ LayoutDeviceCoord, Modifiers>(
+ "layers::ChromeProcessController::NotifyPinchGesture", this,
+ &ChromeProcessController::NotifyPinchGesture, aType, aGuid,
+ aFocusPoint, aSpanChange, aModifiers));
+ return;
+ }
+
+ if (mWidget) {
+ // Dispatch the call to APZCCallbackHelper::NotifyPinchGesture to the main
+ // thread so that it runs asynchronously from the current call. This is
+ // because the call can run arbitrary JS code, which can also spin the event
+ // loop and cause undesirable re-entrancy in APZ.
+ mUIThread->Dispatch(NewRunnableFunction(
+ "layers::ChromeProcessController::NotifyPinchGestureAsync",
+ &APZCCallbackHelper::NotifyPinchGesture, aType, aFocusPoint,
+ aSpanChange, aModifiers, mWidget));
+ }
+}
+
+void ChromeProcessController::NotifyAPZStateChange(
+ const ScrollableLayerGuid& aGuid, APZStateChange aChange, int aArg,
+ Maybe<uint64_t> aInputBlockId) {
+ if (!mUIThread->IsOnCurrentThread()) {
+ mUIThread->Dispatch(NewRunnableMethod<ScrollableLayerGuid, APZStateChange,
+ int, Maybe<uint64_t>>(
+ "layers::ChromeProcessController::NotifyAPZStateChange", this,
+ &ChromeProcessController::NotifyAPZStateChange, aGuid, aChange, aArg,
+ aInputBlockId));
+ return;
+ }
+
+ if (!mAPZEventState) {
+ return;
+ }
+
+ mAPZEventState->ProcessAPZStateChange(aGuid.mScrollId, aChange, aArg,
+ aInputBlockId);
+}
+
+void ChromeProcessController::NotifyMozMouseScrollEvent(
+ const ScrollableLayerGuid::ViewID& aScrollId, const nsString& aEvent) {
+ if (!mUIThread->IsOnCurrentThread()) {
+ mUIThread->Dispatch(
+ NewRunnableMethod<ScrollableLayerGuid::ViewID, nsString>(
+ "layers::ChromeProcessController::NotifyMozMouseScrollEvent", this,
+ &ChromeProcessController::NotifyMozMouseScrollEvent, aScrollId,
+ aEvent));
+ return;
+ }
+
+ APZCCallbackHelper::NotifyMozMouseScrollEvent(aScrollId, aEvent);
+}
+
+void ChromeProcessController::NotifyFlushComplete() {
+ MOZ_ASSERT(IsRepaintThread());
+
+ APZCCallbackHelper::NotifyFlushComplete(GetPresShell());
+}
+
+void ChromeProcessController::NotifyAsyncScrollbarDragInitiated(
+ uint64_t aDragBlockId, const ScrollableLayerGuid::ViewID& aScrollId,
+ ScrollDirection aDirection) {
+ if (!mUIThread->IsOnCurrentThread()) {
+ mUIThread->Dispatch(NewRunnableMethod<uint64_t, ScrollableLayerGuid::ViewID,
+ ScrollDirection>(
+ "layers::ChromeProcessController::NotifyAsyncScrollbarDragInitiated",
+ this, &ChromeProcessController::NotifyAsyncScrollbarDragInitiated,
+ aDragBlockId, aScrollId, aDirection));
+ return;
+ }
+
+ APZCCallbackHelper::NotifyAsyncScrollbarDragInitiated(aDragBlockId, aScrollId,
+ aDirection);
+}
+
+void ChromeProcessController::NotifyAsyncScrollbarDragRejected(
+ const ScrollableLayerGuid::ViewID& aScrollId) {
+ if (!mUIThread->IsOnCurrentThread()) {
+ mUIThread->Dispatch(NewRunnableMethod<ScrollableLayerGuid::ViewID>(
+ "layers::ChromeProcessController::NotifyAsyncScrollbarDragRejected",
+ this, &ChromeProcessController::NotifyAsyncScrollbarDragRejected,
+ aScrollId));
+ return;
+ }
+
+ APZCCallbackHelper::NotifyAsyncScrollbarDragRejected(aScrollId);
+}
+
+void ChromeProcessController::NotifyAsyncAutoscrollRejected(
+ const ScrollableLayerGuid::ViewID& aScrollId) {
+ if (!mUIThread->IsOnCurrentThread()) {
+ mUIThread->Dispatch(NewRunnableMethod<ScrollableLayerGuid::ViewID>(
+ "layers::ChromeProcessController::NotifyAsyncAutoscrollRejected", this,
+ &ChromeProcessController::NotifyAsyncAutoscrollRejected, aScrollId));
+ return;
+ }
+
+ APZCCallbackHelper::NotifyAsyncAutoscrollRejected(aScrollId);
+}
+
+void ChromeProcessController::CancelAutoscroll(
+ const ScrollableLayerGuid& aGuid) {
+ if (!mUIThread->IsOnCurrentThread()) {
+ mUIThread->Dispatch(NewRunnableMethod<ScrollableLayerGuid>(
+ "layers::ChromeProcessController::CancelAutoscroll", this,
+ &ChromeProcessController::CancelAutoscroll, aGuid));
+ return;
+ }
+
+ APZCCallbackHelper::CancelAutoscroll(aGuid.mScrollId);
+}
+
+void ChromeProcessController::NotifyScaleGestureComplete(
+ const ScrollableLayerGuid& aGuid, float aScale) {
+ if (!mUIThread->IsOnCurrentThread()) {
+ mUIThread->Dispatch(NewRunnableMethod<ScrollableLayerGuid, float>(
+ "layers::ChromeProcessController::NotifyScaleGestureComplete", this,
+ &ChromeProcessController::NotifyScaleGestureComplete, aGuid, aScale));
+ return;
+ }
+
+ if (mWidget) {
+ // Dispatch the call to APZCCallbackHelper::NotifyScaleGestureComplete
+ // to the main thread so that it runs asynchronously from the current call.
+ // This is because the call can run arbitrary JS code, which can also spin
+ // the event loop and cause undesirable re-entrancy in APZ.
+ mUIThread->Dispatch(NewRunnableFunction(
+ "layers::ChromeProcessController::NotifyScaleGestureComplete",
+ &APZCCallbackHelper::NotifyScaleGestureComplete, mWidget, aScale));
+ }
+}