197 lines
7.9 KiB
C++
197 lines
7.9 KiB
C++
/* -*- 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/. */
|
|
|
|
#ifndef mozilla_layers_GeckoContentController_h
|
|
#define mozilla_layers_GeckoContentController_h
|
|
|
|
#include "GeckoContentControllerTypes.h"
|
|
#include "InputData.h" // for PinchGestureInput
|
|
#include "LayersTypes.h" // for ScrollDirection
|
|
#include "Units.h" // for CSSPoint, CSSRect, etc
|
|
#include "mozilla/Assertions.h" // for MOZ_ASSERT_HELPER2
|
|
#include "mozilla/Attributes.h" // for MOZ_CAN_RUN_SCRIPT
|
|
#include "mozilla/DefineEnum.h" // for MOZ_DEFINE_ENUM
|
|
#include "mozilla/EventForwards.h" // for Modifiers
|
|
#include "mozilla/layers/APZThreadUtils.h"
|
|
#include "mozilla/layers/MatrixMessage.h" // for MatrixMessage
|
|
#include "mozilla/layers/ScrollableLayerGuid.h" // for ScrollableLayerGuid, etc
|
|
#include "nsISupportsImpl.h"
|
|
|
|
namespace mozilla {
|
|
|
|
class Runnable;
|
|
|
|
namespace layers {
|
|
|
|
struct DoubleTapToZoomMetrics;
|
|
struct RepaintRequest;
|
|
|
|
class GeckoContentController {
|
|
public:
|
|
using APZStateChange = GeckoContentController_APZStateChange;
|
|
using TapType = GeckoContentController_TapType;
|
|
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(GeckoContentController)
|
|
|
|
/**
|
|
* Notifies the content side of the most recently computed transforms for
|
|
* each layers subtree to the root. The nsTArray will contain one
|
|
* MatrixMessage for each layers id in the current APZ tree, along with the
|
|
* corresponding transform.
|
|
*/
|
|
virtual void NotifyLayerTransforms(nsTArray<MatrixMessage>&& aTransforms) = 0;
|
|
|
|
/**
|
|
* Requests a paint of the given RepaintRequest |aRequest| from Gecko.
|
|
* Implementations per-platform are responsible for actually handling this.
|
|
*
|
|
* This method must always be called on the repaint thread, which depends
|
|
* on the GeckoContentController. For ChromeProcessController it is the
|
|
* Gecko main thread, while for RemoteContentController it is the compositor
|
|
* thread where it can send IPDL messages.
|
|
*/
|
|
virtual void RequestContentRepaint(const RepaintRequest& aRequest) = 0;
|
|
|
|
/**
|
|
* Requests handling of a tap event. |aPoint| is in LD pixels, relative to the
|
|
* current scroll offset.
|
|
*/
|
|
MOZ_CAN_RUN_SCRIPT
|
|
virtual void HandleTap(
|
|
TapType aType, const LayoutDevicePoint& aPoint, Modifiers aModifiers,
|
|
const ScrollableLayerGuid& aGuid, uint64_t aInputBlockId,
|
|
const Maybe<DoubleTapToZoomMetrics>& aDoubleTapTooZoomMetrics) = 0;
|
|
|
|
/**
|
|
* When the apz.allow_zooming pref is set to false, the APZ will not
|
|
* translate pinch gestures to actual zooming. Instead, it will call this
|
|
* method to notify gecko of the pinch gesture, and allow it to deal with it
|
|
* however it wishes. Note that this function is not called if the pinch is
|
|
* prevented by content calling preventDefault() on the touch events, or via
|
|
* use of the touch-action property.
|
|
* @param aType One of PINCHGESTURE_START, PINCHGESTURE_SCALE,
|
|
* PINCHGESTURE_FINGERLIFTED, or PINCHGESTURE_END, indicating the phase
|
|
* of the pinch.
|
|
* @param aGuid The guid of the APZ that is detecting the pinch. This is
|
|
* generally the root APZC for the layers id.
|
|
* @param aFocusPoint The focus point of the pinch event.
|
|
* @param aSpanChange For the START or END event, this is always 0.
|
|
* For a SCALE event, this is the difference in span between the
|
|
* previous state and the new state.
|
|
* @param aModifiers The keyboard modifiers depressed during the pinch.
|
|
*/
|
|
virtual void NotifyPinchGesture(PinchGestureInput::PinchGestureType aType,
|
|
const ScrollableLayerGuid& aGuid,
|
|
const LayoutDevicePoint& aFocusPoint,
|
|
LayoutDeviceCoord aSpanChange,
|
|
Modifiers aModifiers) = 0;
|
|
|
|
/**
|
|
* Schedules a runnable to run on the controller thread at some time
|
|
* in the future.
|
|
* This method must always be called on the controller thread.
|
|
*/
|
|
virtual void PostDelayedTask(already_AddRefed<Runnable> aRunnable,
|
|
int aDelayMs) {
|
|
APZThreadUtils::DelayedDispatch(std::move(aRunnable), aDelayMs);
|
|
}
|
|
|
|
/**
|
|
* Returns true if we are currently on the thread that can send repaint
|
|
* requests.
|
|
*/
|
|
virtual bool IsRepaintThread() = 0;
|
|
|
|
/**
|
|
* Runs the given task on the "repaint" thread.
|
|
*/
|
|
virtual void DispatchToRepaintThread(already_AddRefed<Runnable> aTask) = 0;
|
|
|
|
/**
|
|
* General notices of APZ state changes for consumers.
|
|
* |aGuid| identifies the APZC originating the state change.
|
|
* |aChange| identifies the type of state change
|
|
* |aArg| is used by some state changes to pass extra information (see
|
|
* the documentation for each state change above)
|
|
* |aInputBlockId| is populated for the |eStartTouch| and |eEndTouch|
|
|
* state changes and identifies the input block of the
|
|
* gesture that triggers the state change.
|
|
*/
|
|
virtual void NotifyAPZStateChange(const ScrollableLayerGuid& aGuid,
|
|
APZStateChange aChange, int aArg = 0,
|
|
Maybe<uint64_t> aInputBlockId = Nothing()) {
|
|
}
|
|
|
|
/**
|
|
* Notify content of a MozMouseScrollFailed event.
|
|
*/
|
|
virtual void NotifyMozMouseScrollEvent(
|
|
const ScrollableLayerGuid::ViewID& aScrollId, const nsString& aEvent) {}
|
|
|
|
/**
|
|
* Notify content that the repaint requests have been flushed.
|
|
*/
|
|
virtual void NotifyFlushComplete() = 0;
|
|
|
|
/**
|
|
* If the async scrollbar-drag initiation code kicks in on the APZ side, then
|
|
* we need to let content know that we are dragging the scrollbar. Otherwise,
|
|
* by the time the mousedown events is handled by content, the scrollthumb
|
|
* could already have been moved via a RequestContentRepaint message at a
|
|
* new scroll position, and the mousedown might end up triggering a click-to-
|
|
* scroll on where the thumb used to be.
|
|
*/
|
|
virtual void NotifyAsyncScrollbarDragInitiated(
|
|
uint64_t aDragBlockId, const ScrollableLayerGuid::ViewID& aScrollId,
|
|
ScrollDirection aDirection) = 0;
|
|
virtual void NotifyAsyncScrollbarDragRejected(
|
|
const ScrollableLayerGuid::ViewID& aScrollId) = 0;
|
|
|
|
virtual void NotifyAsyncAutoscrollRejected(
|
|
const ScrollableLayerGuid::ViewID& aScrollId) = 0;
|
|
|
|
virtual void CancelAutoscroll(const ScrollableLayerGuid& aGuid) = 0;
|
|
|
|
virtual void NotifyScaleGestureComplete(const ScrollableLayerGuid& aGuid,
|
|
float aScale) = 0;
|
|
|
|
/**
|
|
* Following functions with empty implementations are Android-specific
|
|
* and handled in the parent process. They are overridden by
|
|
* AndroidContentController in the parent process,
|
|
* and by RemoteContentController for the purpose of routing them from
|
|
* the compositor process to the parent process.
|
|
*/
|
|
virtual void UpdateOverscrollVelocity(const ScrollableLayerGuid& aGuid,
|
|
float aX, float aY,
|
|
bool aIsRootContent) {}
|
|
virtual void UpdateOverscrollOffset(const ScrollableLayerGuid& aGuid,
|
|
float aX, float aY, bool aIsRootContent) {
|
|
}
|
|
virtual void HideDynamicToolbar(const ScrollableLayerGuid& aGuid) {}
|
|
|
|
GeckoContentController() = default;
|
|
|
|
/**
|
|
* Needs to be called on the main thread.
|
|
*/
|
|
virtual void Destroy() {}
|
|
|
|
/**
|
|
* Whether this is RemoteContentController.
|
|
*/
|
|
virtual bool IsRemote() { return false; }
|
|
|
|
virtual PresShell* GetTopLevelPresShell() const { return nullptr; };
|
|
|
|
protected:
|
|
// Protected destructor, to discourage deletion outside of Release():
|
|
virtual ~GeckoContentController() = default;
|
|
};
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_layers_GeckoContentController_h
|