forked from mirrors/gecko-dev
930 lines
31 KiB
C++
930 lines
31 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "InputData.h"
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#include "mozilla/dom/MouseEventBinding.h"
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#include "mozilla/dom/Touch.h"
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#include "mozilla/dom/WheelEventBinding.h"
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#include "mozilla/TextEvents.h"
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#include "nsContentUtils.h"
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#include "nsDebug.h"
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#include "nsThreadUtils.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/TouchEvents.h"
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#include "mozilla/SwipeTracker.h"
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#include "UnitTransforms.h"
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namespace mozilla {
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using namespace dom;
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InputData::~InputData() = default;
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InputData::InputData(InputType aInputType)
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: mInputType(aInputType),
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mFocusSequenceNumber(0),
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mLayersId{0},
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modifiers(0) {}
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InputData::InputData(InputType aInputType, TimeStamp aTimeStamp,
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Modifiers aModifiers)
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: mInputType(aInputType),
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mTimeStamp(aTimeStamp),
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mFocusSequenceNumber(0),
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mLayersId{0},
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modifiers(aModifiers) {}
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SingleTouchData::SingleTouchData(int32_t aIdentifier,
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ScreenIntPoint aScreenPoint,
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ScreenSize aRadius, float aRotationAngle,
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float aForce)
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: mIdentifier(aIdentifier),
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mScreenPoint(aScreenPoint),
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mRadius(aRadius),
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mRotationAngle(aRotationAngle),
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mForce(aForce) {}
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SingleTouchData::SingleTouchData(int32_t aIdentifier,
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ParentLayerPoint aLocalScreenPoint,
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ScreenSize aRadius, float aRotationAngle,
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float aForce)
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: mIdentifier(aIdentifier),
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mLocalScreenPoint(aLocalScreenPoint),
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mRadius(aRadius),
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mRotationAngle(aRotationAngle),
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mForce(aForce) {}
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SingleTouchData::SingleTouchData()
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: mIdentifier(0), mRotationAngle(0.0), mForce(0.0) {}
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already_AddRefed<Touch> SingleTouchData::ToNewDOMTouch() const {
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only create dom::Touch instances on main thread");
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RefPtr<Touch> touch =
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new Touch(mIdentifier,
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LayoutDeviceIntPoint::Truncate(mScreenPoint.x, mScreenPoint.y),
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LayoutDeviceIntPoint::Truncate(mRadius.width, mRadius.height),
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mRotationAngle, mForce);
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touch->tiltX = mTiltX;
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touch->tiltY = mTiltY;
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touch->twist = mTwist;
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return touch.forget();
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}
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MultiTouchInput::MultiTouchInput(MultiTouchType aType, uint32_t aTime,
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TimeStamp aTimeStamp, Modifiers aModifiers)
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: InputData(MULTITOUCH_INPUT, aTimeStamp, aModifiers),
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mType(aType),
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mHandledByAPZ(false) {}
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MultiTouchInput::MultiTouchInput()
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: InputData(MULTITOUCH_INPUT),
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mType(MULTITOUCH_START),
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mHandledByAPZ(false) {}
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MultiTouchInput::MultiTouchInput(const WidgetTouchEvent& aTouchEvent)
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: InputData(MULTITOUCH_INPUT, aTouchEvent.mTimeStamp,
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aTouchEvent.mModifiers),
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mHandledByAPZ(aTouchEvent.mFlags.mHandledByAPZ),
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mButton(aTouchEvent.mButton),
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mButtons(aTouchEvent.mButtons) {
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only copy from WidgetTouchEvent on main thread");
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switch (aTouchEvent.mMessage) {
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case eTouchStart:
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mType = MULTITOUCH_START;
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break;
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case eTouchMove:
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mType = MULTITOUCH_MOVE;
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break;
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case eTouchEnd:
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mType = MULTITOUCH_END;
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break;
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case eTouchCancel:
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mType = MULTITOUCH_CANCEL;
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("Did not assign a type to a MultiTouchInput");
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break;
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}
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mScreenOffset = ViewAs<ExternalPixel>(
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aTouchEvent.mWidget->WidgetToScreenOffset(),
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PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent);
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for (size_t i = 0; i < aTouchEvent.mTouches.Length(); i++) {
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const Touch* domTouch = aTouchEvent.mTouches[i];
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// Extract data from weird interfaces.
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int32_t identifier = domTouch->Identifier();
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int32_t radiusX = domTouch->RadiusX(CallerType::System);
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int32_t radiusY = domTouch->RadiusY(CallerType::System);
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float rotationAngle = domTouch->RotationAngle(CallerType::System);
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float force = domTouch->Force(CallerType::System);
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SingleTouchData data(
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identifier,
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ViewAs<ScreenPixel>(
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domTouch->mRefPoint,
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PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent),
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ScreenSize((float)radiusX, (float)radiusY), rotationAngle, force);
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mTouches.AppendElement(data);
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}
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}
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void MultiTouchInput::Translate(const ScreenPoint& aTranslation) {
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ScreenIntPoint translation = RoundedToInt(aTranslation);
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for (auto& touchData : mTouches) {
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for (auto& historicalData : touchData.mHistoricalData) {
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historicalData.mScreenPoint.MoveBy(translation.x, translation.y);
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}
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touchData.mScreenPoint.MoveBy(translation.x, translation.y);
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}
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}
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WidgetTouchEvent MultiTouchInput::ToWidgetEvent(nsIWidget* aWidget,
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uint16_t aInputSource) const {
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only convert To WidgetTouchEvent on main thread");
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MOZ_ASSERT(aInputSource ==
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mozilla::dom::MouseEvent_Binding::MOZ_SOURCE_TOUCH ||
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aInputSource == mozilla::dom::MouseEvent_Binding::MOZ_SOURCE_PEN);
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EventMessage touchEventMessage = eVoidEvent;
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switch (mType) {
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case MULTITOUCH_START:
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touchEventMessage = eTouchStart;
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break;
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case MULTITOUCH_MOVE:
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touchEventMessage = eTouchMove;
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break;
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case MULTITOUCH_END:
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touchEventMessage = eTouchEnd;
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break;
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case MULTITOUCH_CANCEL:
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touchEventMessage = eTouchCancel;
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break;
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default:
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MOZ_ASSERT_UNREACHABLE(
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"Did not assign a type to WidgetTouchEvent in MultiTouchInput");
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break;
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}
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WidgetTouchEvent event(true, touchEventMessage, aWidget);
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if (touchEventMessage == eVoidEvent) {
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return event;
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}
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event.mModifiers = this->modifiers;
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event.mTimeStamp = this->mTimeStamp;
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event.mFlags.mHandledByAPZ = mHandledByAPZ;
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event.mFocusSequenceNumber = mFocusSequenceNumber;
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event.mLayersId = mLayersId;
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event.mInputSource = aInputSource;
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event.mButton = mButton;
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event.mButtons = mButtons;
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for (size_t i = 0; i < mTouches.Length(); i++) {
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*event.mTouches.AppendElement() = mTouches[i].ToNewDOMTouch();
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}
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return event;
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}
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int32_t MultiTouchInput::IndexOfTouch(int32_t aTouchIdentifier) {
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for (size_t i = 0; i < mTouches.Length(); i++) {
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if (mTouches[i].mIdentifier == aTouchIdentifier) {
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return (int32_t)i;
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}
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}
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return -1;
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}
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bool MultiTouchInput::TransformToLocal(
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const ScreenToParentLayerMatrix4x4& aTransform) {
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for (auto& touchData : mTouches) {
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for (auto& historicalData : touchData.mHistoricalData) {
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Maybe<ParentLayerIntPoint> historicalPoint =
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UntransformBy(aTransform, historicalData.mScreenPoint);
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if (!historicalPoint) {
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return false;
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}
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historicalData.mLocalScreenPoint = *historicalPoint;
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}
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Maybe<ParentLayerIntPoint> point =
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UntransformBy(aTransform, touchData.mScreenPoint);
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if (!point) {
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return false;
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}
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touchData.mLocalScreenPoint = *point;
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}
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return true;
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}
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MouseInput::MouseInput()
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: InputData(MOUSE_INPUT),
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mType(MOUSE_NONE),
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mButtonType(NONE),
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mInputSource(0),
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mButtons(0),
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mHandledByAPZ(false),
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mPreventClickEvent(false) {}
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MouseInput::MouseInput(MouseType aType, ButtonType aButtonType,
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uint16_t aInputSource, int16_t aButtons,
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const ScreenPoint& aPoint, TimeStamp aTimeStamp,
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Modifiers aModifiers)
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: InputData(MOUSE_INPUT, aTimeStamp, aModifiers),
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mType(aType),
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mButtonType(aButtonType),
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mInputSource(aInputSource),
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mButtons(aButtons),
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mOrigin(aPoint),
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mHandledByAPZ(false),
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mPreventClickEvent(false) {}
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MouseInput::MouseInput(const WidgetMouseEventBase& aMouseEvent)
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: InputData(MOUSE_INPUT, aMouseEvent.mTimeStamp, aMouseEvent.mModifiers),
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mType(MOUSE_NONE),
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mButtonType(NONE),
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mInputSource(aMouseEvent.mInputSource),
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mButtons(aMouseEvent.mButtons),
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mHandledByAPZ(aMouseEvent.mFlags.mHandledByAPZ),
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mPreventClickEvent(aMouseEvent.mClass == eMouseEventClass &&
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aMouseEvent.AsMouseEvent()->mClickEventPrevented) {
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only copy from WidgetTouchEvent on main thread");
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mButtonType = NONE;
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switch (aMouseEvent.mButton) {
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case MouseButton::ePrimary:
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mButtonType = MouseInput::PRIMARY_BUTTON;
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break;
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case MouseButton::eMiddle:
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mButtonType = MouseInput::MIDDLE_BUTTON;
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break;
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case MouseButton::eSecondary:
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mButtonType = MouseInput::SECONDARY_BUTTON;
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break;
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}
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switch (aMouseEvent.mMessage) {
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case eMouseMove:
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mType = MOUSE_MOVE;
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break;
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case eMouseUp:
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mType = MOUSE_UP;
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break;
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case eMouseDown:
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mType = MOUSE_DOWN;
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break;
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case eDragStart:
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mType = MOUSE_DRAG_START;
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break;
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case eDragEnd:
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mType = MOUSE_DRAG_END;
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break;
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case eMouseEnterIntoWidget:
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mType = MOUSE_WIDGET_ENTER;
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break;
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case eMouseExitFromWidget:
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mType = MOUSE_WIDGET_EXIT;
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break;
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case eMouseExploreByTouch:
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mType = MOUSE_EXPLORE_BY_TOUCH;
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break;
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case eMouseHitTest:
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mType = MOUSE_HITTEST;
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break;
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case eContextMenu:
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mType = MOUSE_CONTEXTMENU;
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("Mouse event type not supported");
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break;
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}
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mOrigin = ScreenPoint(ViewAs<ScreenPixel>(
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aMouseEvent.mRefPoint,
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PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent));
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}
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bool MouseInput::IsLeftButton() const { return mButtonType == PRIMARY_BUTTON; }
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bool MouseInput::TransformToLocal(
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const ScreenToParentLayerMatrix4x4& aTransform) {
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Maybe<ParentLayerPoint> point = UntransformBy(aTransform, mOrigin);
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if (!point) {
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return false;
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}
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mLocalOrigin = *point;
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return true;
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}
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WidgetMouseEvent MouseInput::ToWidgetEvent(nsIWidget* aWidget) const {
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only convert To WidgetTouchEvent on main thread");
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EventMessage msg = eVoidEvent;
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uint32_t clickCount = 0;
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Maybe<WidgetMouseEvent::ExitFrom> exitFrom;
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switch (mType) {
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case MOUSE_MOVE:
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msg = eMouseMove;
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break;
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case MOUSE_UP:
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msg = eMouseUp;
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clickCount = 1;
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break;
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case MOUSE_DOWN:
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msg = eMouseDown;
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clickCount = 1;
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break;
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case MOUSE_DRAG_START:
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msg = eDragStart;
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break;
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case MOUSE_DRAG_END:
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msg = eDragEnd;
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break;
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case MOUSE_WIDGET_ENTER:
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msg = eMouseEnterIntoWidget;
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break;
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case MOUSE_WIDGET_EXIT:
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msg = eMouseExitFromWidget;
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exitFrom = Some(WidgetMouseEvent::ePlatformChild);
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break;
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case MOUSE_EXPLORE_BY_TOUCH:
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msg = eMouseExploreByTouch;
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break;
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case MOUSE_HITTEST:
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msg = eMouseHitTest;
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break;
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case MOUSE_CONTEXTMENU:
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msg = eContextMenu;
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break;
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default:
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MOZ_ASSERT_UNREACHABLE(
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"Did not assign a type to WidgetMouseEvent in MouseInput");
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break;
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}
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WidgetMouseEvent event(true, msg, aWidget, WidgetMouseEvent::eReal,
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WidgetMouseEvent::eNormal);
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if (msg == eVoidEvent) {
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return event;
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}
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switch (mButtonType) {
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case MouseInput::PRIMARY_BUTTON:
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event.mButton = MouseButton::ePrimary;
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break;
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case MouseInput::MIDDLE_BUTTON:
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event.mButton = MouseButton::eMiddle;
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break;
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case MouseInput::SECONDARY_BUTTON:
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event.mButton = MouseButton::eSecondary;
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break;
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case MouseInput::NONE:
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default:
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break;
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}
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event.mButtons = mButtons;
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event.mModifiers = modifiers;
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event.mTimeStamp = mTimeStamp;
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event.mLayersId = mLayersId;
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event.mFlags.mHandledByAPZ = mHandledByAPZ;
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event.mRefPoint = RoundedToInt(ViewAs<LayoutDevicePixel>(
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mOrigin,
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PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent));
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event.mClickCount = clickCount;
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event.mInputSource = mInputSource;
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event.mFocusSequenceNumber = mFocusSequenceNumber;
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event.mExitFrom = exitFrom;
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event.mClickEventPrevented = mPreventClickEvent;
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return event;
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}
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PanGestureInput::PanGestureInput()
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: InputData(PANGESTURE_INPUT),
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mType(PANGESTURE_MAYSTART),
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mLineOrPageDeltaX(0),
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mLineOrPageDeltaY(0),
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mUserDeltaMultiplierX(1.0),
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mUserDeltaMultiplierY(1.0),
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mHandledByAPZ(false),
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mOverscrollBehaviorAllowsSwipe(false),
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mSimulateMomentum(false),
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mIsNoLineOrPageDelta(true),
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mMayTriggerSwipe(false) {}
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PanGestureInput::PanGestureInput(PanGestureType aType, TimeStamp aTimeStamp,
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const ScreenPoint& aPanStartPoint,
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const ScreenPoint& aPanDisplacement,
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Modifiers aModifiers)
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: InputData(PANGESTURE_INPUT, aTimeStamp, aModifiers),
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mType(aType),
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mPanStartPoint(aPanStartPoint),
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mPanDisplacement(aPanDisplacement),
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mLineOrPageDeltaX(0),
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mLineOrPageDeltaY(0),
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mUserDeltaMultiplierX(1.0),
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mUserDeltaMultiplierY(1.0),
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mHandledByAPZ(false),
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mOverscrollBehaviorAllowsSwipe(false),
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mSimulateMomentum(false),
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mIsNoLineOrPageDelta(true) {
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mMayTriggerSwipe = SwipeTracker::CanTriggerSwipe(*this);
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}
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PanGestureInput::PanGestureInput(PanGestureType aType, TimeStamp aTimeStamp,
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const ScreenPoint& aPanStartPoint,
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const ScreenPoint& aPanDisplacement,
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Modifiers aModifiers,
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IsEligibleForSwipe aIsEligibleForSwipe)
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: PanGestureInput(aType, aTimeStamp, aPanStartPoint, aPanDisplacement,
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aModifiers) {
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mMayTriggerSwipe &= bool(aIsEligibleForSwipe);
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}
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void PanGestureInput::SetLineOrPageDeltas(int32_t aLineOrPageDeltaX,
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int32_t aLineOrPageDeltaY) {
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mLineOrPageDeltaX = aLineOrPageDeltaX;
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mLineOrPageDeltaY = aLineOrPageDeltaY;
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mIsNoLineOrPageDelta = false;
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}
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bool PanGestureInput::IsMomentum() const {
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switch (mType) {
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case PanGestureInput::PANGESTURE_MOMENTUMSTART:
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case PanGestureInput::PANGESTURE_MOMENTUMPAN:
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case PanGestureInput::PANGESTURE_MOMENTUMEND:
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return true;
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default:
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return false;
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}
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}
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WidgetWheelEvent PanGestureInput::ToWidgetEvent(nsIWidget* aWidget) const {
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WidgetWheelEvent wheelEvent(true, eWheel, aWidget);
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wheelEvent.mModifiers = this->modifiers;
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wheelEvent.mTimeStamp = mTimeStamp;
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wheelEvent.mLayersId = mLayersId;
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wheelEvent.mRefPoint = RoundedToInt(ViewAs<LayoutDevicePixel>(
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mPanStartPoint,
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PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent));
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wheelEvent.mButtons = 0;
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wheelEvent.mMayHaveMomentum = true; // pan inputs may have momentum
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wheelEvent.mIsMomentum = IsMomentum();
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wheelEvent.mLineOrPageDeltaX = mLineOrPageDeltaX;
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wheelEvent.mLineOrPageDeltaY = mLineOrPageDeltaY;
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wheelEvent.mDeltaX = mPanDisplacement.x;
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wheelEvent.mDeltaY = mPanDisplacement.y;
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wheelEvent.mFlags.mHandledByAPZ = mHandledByAPZ;
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wheelEvent.mFocusSequenceNumber = mFocusSequenceNumber;
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wheelEvent.mIsNoLineOrPageDelta = mIsNoLineOrPageDelta;
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if (mDeltaType == PanGestureInput::PANDELTA_PAGE) {
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// widget/gtk is currently the only consumer that uses delta type
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// PANDELTA_PAGE
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// Emulate legacy widget/gtk behavior
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wheelEvent.mDeltaMode = WheelEvent_Binding::DOM_DELTA_LINE;
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wheelEvent.mScrollType = WidgetWheelEvent::SCROLL_ASYNCHRONOUSLY;
|
|
wheelEvent.mDeltaX *= 3;
|
|
wheelEvent.mDeltaY *= 3;
|
|
} else {
|
|
wheelEvent.mDeltaMode = WheelEvent_Binding::DOM_DELTA_PIXEL;
|
|
}
|
|
return wheelEvent;
|
|
}
|
|
|
|
bool PanGestureInput::TransformToLocal(
|
|
const ScreenToParentLayerMatrix4x4& aTransform) {
|
|
Maybe<ParentLayerPoint> panStartPoint =
|
|
UntransformBy(aTransform, mPanStartPoint);
|
|
if (!panStartPoint) {
|
|
return false;
|
|
}
|
|
mLocalPanStartPoint = *panStartPoint;
|
|
|
|
if (mDeltaType == PanGestureInput::PANDELTA_PAGE) {
|
|
// Skip transforming the pan displacement because we want
|
|
// raw page proportion counts.
|
|
mLocalPanDisplacement = ViewAs<ParentLayerPixel>(
|
|
mPanDisplacement, PixelCastJustification::DeltaIsPageProportion);
|
|
return true;
|
|
}
|
|
|
|
Maybe<ParentLayerPoint> panDisplacement =
|
|
UntransformVector(aTransform, mPanDisplacement, mPanStartPoint);
|
|
if (!panDisplacement) {
|
|
return false;
|
|
}
|
|
mLocalPanDisplacement = *panDisplacement;
|
|
return true;
|
|
}
|
|
|
|
ScreenPoint PanGestureInput::UserMultipliedPanDisplacement() const {
|
|
return ScreenPoint(mPanDisplacement.x * mUserDeltaMultiplierX,
|
|
mPanDisplacement.y * mUserDeltaMultiplierY);
|
|
}
|
|
|
|
ParentLayerPoint PanGestureInput::UserMultipliedLocalPanDisplacement() const {
|
|
return ParentLayerPoint(mLocalPanDisplacement.x * mUserDeltaMultiplierX,
|
|
mLocalPanDisplacement.y * mUserDeltaMultiplierY);
|
|
}
|
|
|
|
static int32_t TakeLargestInt(gfx::Coord* aCoord) {
|
|
int32_t result(aCoord->value); // truncate towards zero
|
|
aCoord->value -= result;
|
|
return result;
|
|
}
|
|
|
|
/* static */ gfx::IntPoint PanGestureInput::GetIntegerDeltaForEvent(
|
|
bool aIsStart, float x, float y) {
|
|
static gfx::Point sAccumulator(0.0f, 0.0f);
|
|
if (aIsStart) {
|
|
sAccumulator = gfx::Point(0.0f, 0.0f);
|
|
}
|
|
sAccumulator.x += x;
|
|
sAccumulator.y += y;
|
|
return gfx::IntPoint(TakeLargestInt(&sAccumulator.x),
|
|
TakeLargestInt(&sAccumulator.y));
|
|
}
|
|
|
|
PinchGestureInput::PinchGestureInput()
|
|
: InputData(PINCHGESTURE_INPUT),
|
|
mType(PINCHGESTURE_START),
|
|
mSource(UNKNOWN),
|
|
mHandledByAPZ(false) {}
|
|
|
|
PinchGestureInput::PinchGestureInput(
|
|
PinchGestureType aType, PinchGestureSource aSource, TimeStamp aTimeStamp,
|
|
const ExternalPoint& aScreenOffset, const ScreenPoint& aFocusPoint,
|
|
ScreenCoord aCurrentSpan, ScreenCoord aPreviousSpan, Modifiers aModifiers)
|
|
: InputData(PINCHGESTURE_INPUT, aTimeStamp, aModifiers),
|
|
mType(aType),
|
|
mSource(aSource),
|
|
mFocusPoint(aFocusPoint),
|
|
mScreenOffset(aScreenOffset),
|
|
mCurrentSpan(aCurrentSpan),
|
|
mPreviousSpan(aPreviousSpan),
|
|
mLineOrPageDeltaY(0),
|
|
mHandledByAPZ(false) {}
|
|
|
|
bool PinchGestureInput::TransformToLocal(
|
|
const ScreenToParentLayerMatrix4x4& aTransform) {
|
|
Maybe<ParentLayerPoint> point = UntransformBy(aTransform, mFocusPoint);
|
|
if (!point) {
|
|
return false;
|
|
}
|
|
mLocalFocusPoint = *point;
|
|
return true;
|
|
}
|
|
|
|
WidgetWheelEvent PinchGestureInput::ToWidgetEvent(nsIWidget* aWidget) const {
|
|
WidgetWheelEvent wheelEvent(true, eWheel, aWidget);
|
|
wheelEvent.mModifiers = this->modifiers | MODIFIER_CONTROL;
|
|
wheelEvent.mTimeStamp = mTimeStamp;
|
|
wheelEvent.mLayersId = mLayersId;
|
|
wheelEvent.mRefPoint = RoundedToInt(ViewAs<LayoutDevicePixel>(
|
|
mFocusPoint,
|
|
PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent));
|
|
wheelEvent.mButtons = 0;
|
|
wheelEvent.mFlags.mHandledByAPZ = mHandledByAPZ;
|
|
wheelEvent.mDeltaMode = WheelEvent_Binding::DOM_DELTA_PIXEL;
|
|
|
|
wheelEvent.mDeltaY = ComputeDeltaY(aWidget);
|
|
|
|
wheelEvent.mLineOrPageDeltaY = mLineOrPageDeltaY;
|
|
|
|
MOZ_ASSERT(mType == PINCHGESTURE_END || wheelEvent.mDeltaY != 0.0);
|
|
|
|
return wheelEvent;
|
|
}
|
|
|
|
double PinchGestureInput::ComputeDeltaY(nsIWidget* aWidget) const {
|
|
#if defined(XP_DARWIN)
|
|
// This converts the pinch gesture value to a fake wheel event that has the
|
|
// control key pressed so that pages can implement custom pinch gesture
|
|
// handling. It may seem strange that this doesn't use a wheel event with
|
|
// the deltaZ property set, but this matches Chrome's behavior as described
|
|
// at https://code.google.com/p/chromium/issues/detail?id=289887
|
|
//
|
|
// The intent of the formula below is to produce numbers similar to Chrome's
|
|
// implementation of this feature. Chrome implements deltaY using the formula
|
|
// "-100 * log(1 + [event magnification])" which is unfortunately incorrect.
|
|
// All deltas for a single pinch gesture should sum to 0 if the start and end
|
|
// of a pinch gesture end up in the same place. This doesn't happen in Chrome
|
|
// because they followed Apple's misleading documentation, which implies that
|
|
// "1 + [event magnification]" is the scale factor. The scale factor is
|
|
// instead "pow(ratio, [event magnification])" so "[event magnification]" is
|
|
// already in log space.
|
|
//
|
|
// The multiplication by the backing scale factor below counteracts the
|
|
// division by the backing scale factor in WheelEvent.
|
|
|
|
// We want to set deltaY to |-100.0 * M * GetDefaultScaleInternal()| where M
|
|
// is [event magnification] but [event magnification] is only available in the
|
|
// macOS widget code so we have to reverse engineer from mCurrentSpan and
|
|
// mPreviousSpan (which are derived from [event magnification]) to get it.
|
|
// Specifically, we know |mCurrentSpan == 100.0| and |mPreviousSpan == 100.0 *
|
|
// (1.0 - M)|. We can calculate deltaY by solving the mPreviousSpan equation
|
|
// for M in terms of mPreviousSpan and plugging that into to the formula for
|
|
// deltaY.
|
|
return (mPreviousSpan - 100.0) *
|
|
(aWidget ? aWidget->GetDefaultScaleInternal() : 1.f);
|
|
#else
|
|
// This calculation is based on what the Windows and Linux widget code does.
|
|
// Specifically, it creates a PinchGestureInput with |mCurrentSpan == 100.0 *
|
|
// currentScale| and |mPreviousSpan == 100.0 * lastScale| where currentScale
|
|
// is the scale from the current OS event and lastScale is the scale when the
|
|
// previous OS event happened. On macOS [event magnification] is a relative
|
|
// change in scale factor, ie if the scale factor changed from 1 to 1.1 it
|
|
// will be 0.1, similarly if it changed from 1 to 0.9 it will be -0.1. To
|
|
// calculate the relative scale change on Windows we would calculate |M =
|
|
// currentScale - lastScale = (mCurrentSpan-mPreviousSpan)/100| and use the
|
|
// same formula as the macOS code
|
|
// (|-100.0 * M * GetDefaultScaleInternal()|).
|
|
|
|
return (mPreviousSpan - mCurrentSpan) *
|
|
(aWidget ? aWidget->GetDefaultScaleInternal() : 1.f);
|
|
#endif
|
|
}
|
|
|
|
bool PinchGestureInput::SetLineOrPageDeltaY(nsIWidget* aWidget) {
|
|
double deltaY = ComputeDeltaY(aWidget);
|
|
if (deltaY == 0 && mType != PINCHGESTURE_END) {
|
|
return false;
|
|
}
|
|
gfx::IntPoint lineOrPageDelta = PinchGestureInput::GetIntegerDeltaForEvent(
|
|
(mType == PINCHGESTURE_START), 0, deltaY);
|
|
mLineOrPageDeltaY = lineOrPageDelta.y;
|
|
if (mLineOrPageDeltaY == 0) {
|
|
// For PINCHGESTURE_SCALE events, don't dispatch them. Note that the delta
|
|
// isn't lost; it remains in the accumulator in GetIntegerDeltaForEvent().
|
|
if (mType == PINCHGESTURE_SCALE) {
|
|
return false;
|
|
}
|
|
// On Windows, drop PINCHGESTURE_START as well (the Windows widget code will
|
|
// defer the START event until we accumulate enough delta).
|
|
// The Linux widget code doesn't support this, so instead set the event's
|
|
// mLineOrPageDeltaY to the smallest nonzero amount in the relevant
|
|
// direction.
|
|
if (mType == PINCHGESTURE_START) {
|
|
#ifdef XP_WIN
|
|
return false;
|
|
#else
|
|
mLineOrPageDeltaY = (deltaY >= 0) ? 1 : -1;
|
|
#endif
|
|
}
|
|
// For PINCHGESTURE_END events, not dispatching a DOMMouseScroll for them is
|
|
// fine.
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* static */ gfx::IntPoint PinchGestureInput::GetIntegerDeltaForEvent(
|
|
bool aIsStart, float x, float y) {
|
|
static gfx::Point sAccumulator(0.0f, 0.0f);
|
|
if (aIsStart) {
|
|
sAccumulator = gfx::Point(0.0f, 0.0f);
|
|
}
|
|
sAccumulator.x += x;
|
|
sAccumulator.y += y;
|
|
return gfx::IntPoint(TakeLargestInt(&sAccumulator.x),
|
|
TakeLargestInt(&sAccumulator.y));
|
|
}
|
|
|
|
TapGestureInput::TapGestureInput()
|
|
: InputData(TAPGESTURE_INPUT), mType(TAPGESTURE_LONG) {}
|
|
|
|
TapGestureInput::TapGestureInput(TapGestureType aType, TimeStamp aTimeStamp,
|
|
const ScreenIntPoint& aPoint,
|
|
Modifiers aModifiers)
|
|
: InputData(TAPGESTURE_INPUT, aTimeStamp, aModifiers),
|
|
mType(aType),
|
|
mPoint(aPoint) {}
|
|
|
|
TapGestureInput::TapGestureInput(TapGestureType aType, TimeStamp aTimeStamp,
|
|
const ParentLayerPoint& aLocalPoint,
|
|
Modifiers aModifiers)
|
|
: InputData(TAPGESTURE_INPUT, aTimeStamp, aModifiers),
|
|
mType(aType),
|
|
mLocalPoint(aLocalPoint) {}
|
|
|
|
bool TapGestureInput::TransformToLocal(
|
|
const ScreenToParentLayerMatrix4x4& aTransform) {
|
|
Maybe<ParentLayerIntPoint> point = UntransformBy(aTransform, mPoint);
|
|
if (!point) {
|
|
return false;
|
|
}
|
|
mLocalPoint = *point;
|
|
return true;
|
|
}
|
|
|
|
WidgetSimpleGestureEvent TapGestureInput::ToWidgetEvent(
|
|
nsIWidget* aWidget) const {
|
|
WidgetSimpleGestureEvent event(true, eTapGesture, aWidget);
|
|
|
|
event.mTimeStamp = mTimeStamp;
|
|
event.mLayersId = mLayersId;
|
|
event.mRefPoint = ViewAs<LayoutDevicePixel>(
|
|
mPoint,
|
|
PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent);
|
|
event.mButtons = 0;
|
|
event.mClickCount = 1;
|
|
event.mModifiers = modifiers;
|
|
|
|
return event;
|
|
}
|
|
|
|
ScrollWheelInput::ScrollWheelInput()
|
|
: InputData(SCROLLWHEEL_INPUT),
|
|
mDeltaType(SCROLLDELTA_LINE),
|
|
mScrollMode(SCROLLMODE_INSTANT),
|
|
mHandledByAPZ(false),
|
|
mDeltaX(0.0),
|
|
mDeltaY(0.0),
|
|
mLineOrPageDeltaX(0),
|
|
mLineOrPageDeltaY(0),
|
|
mScrollSeriesNumber(0),
|
|
mUserDeltaMultiplierX(1.0),
|
|
mUserDeltaMultiplierY(1.0),
|
|
mMayHaveMomentum(false),
|
|
mIsMomentum(false),
|
|
mAPZAction(APZWheelAction::Scroll) {}
|
|
|
|
ScrollWheelInput::ScrollWheelInput(
|
|
TimeStamp aTimeStamp, Modifiers aModifiers, ScrollMode aScrollMode,
|
|
ScrollDeltaType aDeltaType, const ScreenPoint& aOrigin, double aDeltaX,
|
|
double aDeltaY, bool aAllowToOverrideSystemScrollSpeed,
|
|
WheelDeltaAdjustmentStrategy aWheelDeltaAdjustmentStrategy)
|
|
: InputData(SCROLLWHEEL_INPUT, aTimeStamp, aModifiers),
|
|
mDeltaType(aDeltaType),
|
|
mScrollMode(aScrollMode),
|
|
mOrigin(aOrigin),
|
|
mHandledByAPZ(false),
|
|
mDeltaX(aDeltaX),
|
|
mDeltaY(aDeltaY),
|
|
mLineOrPageDeltaX(0),
|
|
mLineOrPageDeltaY(0),
|
|
mScrollSeriesNumber(0),
|
|
mUserDeltaMultiplierX(1.0),
|
|
mUserDeltaMultiplierY(1.0),
|
|
mMayHaveMomentum(false),
|
|
mIsMomentum(false),
|
|
mAllowToOverrideSystemScrollSpeed(aAllowToOverrideSystemScrollSpeed),
|
|
mWheelDeltaAdjustmentStrategy(aWheelDeltaAdjustmentStrategy),
|
|
mAPZAction(APZWheelAction::Scroll) {}
|
|
|
|
ScrollWheelInput::ScrollWheelInput(const WidgetWheelEvent& aWheelEvent)
|
|
: InputData(SCROLLWHEEL_INPUT, aWheelEvent.mTimeStamp,
|
|
aWheelEvent.mModifiers),
|
|
mDeltaType(DeltaTypeForDeltaMode(aWheelEvent.mDeltaMode)),
|
|
mScrollMode(SCROLLMODE_INSTANT),
|
|
mHandledByAPZ(aWheelEvent.mFlags.mHandledByAPZ),
|
|
mDeltaX(aWheelEvent.mDeltaX),
|
|
mDeltaY(aWheelEvent.mDeltaY),
|
|
mWheelTicksX(aWheelEvent.mWheelTicksX),
|
|
mWheelTicksY(aWheelEvent.mWheelTicksX),
|
|
mLineOrPageDeltaX(aWheelEvent.mLineOrPageDeltaX),
|
|
mLineOrPageDeltaY(aWheelEvent.mLineOrPageDeltaY),
|
|
mScrollSeriesNumber(0),
|
|
mUserDeltaMultiplierX(1.0),
|
|
mUserDeltaMultiplierY(1.0),
|
|
mMayHaveMomentum(aWheelEvent.mMayHaveMomentum),
|
|
mIsMomentum(aWheelEvent.mIsMomentum),
|
|
mAllowToOverrideSystemScrollSpeed(
|
|
aWheelEvent.mAllowToOverrideSystemScrollSpeed),
|
|
mWheelDeltaAdjustmentStrategy(WheelDeltaAdjustmentStrategy::eNone),
|
|
mAPZAction(APZWheelAction::Scroll) {
|
|
mOrigin = ScreenPoint(ViewAs<ScreenPixel>(
|
|
aWheelEvent.mRefPoint,
|
|
PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent));
|
|
}
|
|
|
|
ScrollWheelInput::ScrollDeltaType ScrollWheelInput::DeltaTypeForDeltaMode(
|
|
uint32_t aDeltaMode) {
|
|
switch (aDeltaMode) {
|
|
case WheelEvent_Binding::DOM_DELTA_LINE:
|
|
return SCROLLDELTA_LINE;
|
|
case WheelEvent_Binding::DOM_DELTA_PAGE:
|
|
return SCROLLDELTA_PAGE;
|
|
case WheelEvent_Binding::DOM_DELTA_PIXEL:
|
|
return SCROLLDELTA_PIXEL;
|
|
default:
|
|
MOZ_CRASH();
|
|
}
|
|
return SCROLLDELTA_LINE;
|
|
}
|
|
|
|
uint32_t ScrollWheelInput::DeltaModeForDeltaType(ScrollDeltaType aDeltaType) {
|
|
switch (aDeltaType) {
|
|
case ScrollWheelInput::SCROLLDELTA_LINE:
|
|
return WheelEvent_Binding::DOM_DELTA_LINE;
|
|
case ScrollWheelInput::SCROLLDELTA_PAGE:
|
|
return WheelEvent_Binding::DOM_DELTA_PAGE;
|
|
case ScrollWheelInput::SCROLLDELTA_PIXEL:
|
|
default:
|
|
return WheelEvent_Binding::DOM_DELTA_PIXEL;
|
|
}
|
|
}
|
|
|
|
ScrollUnit ScrollWheelInput::ScrollUnitForDeltaType(
|
|
ScrollDeltaType aDeltaType) {
|
|
switch (aDeltaType) {
|
|
case SCROLLDELTA_LINE:
|
|
return ScrollUnit::LINES;
|
|
case SCROLLDELTA_PAGE:
|
|
return ScrollUnit::PAGES;
|
|
case SCROLLDELTA_PIXEL:
|
|
return ScrollUnit::DEVICE_PIXELS;
|
|
default:
|
|
MOZ_CRASH();
|
|
}
|
|
return ScrollUnit::LINES;
|
|
}
|
|
|
|
WidgetWheelEvent ScrollWheelInput::ToWidgetEvent(nsIWidget* aWidget) const {
|
|
WidgetWheelEvent wheelEvent(true, eWheel, aWidget);
|
|
wheelEvent.mModifiers = this->modifiers;
|
|
wheelEvent.mTimeStamp = mTimeStamp;
|
|
wheelEvent.mLayersId = mLayersId;
|
|
wheelEvent.mRefPoint = RoundedToInt(ViewAs<LayoutDevicePixel>(
|
|
mOrigin,
|
|
PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent));
|
|
wheelEvent.mButtons = 0;
|
|
wheelEvent.mDeltaMode = DeltaModeForDeltaType(mDeltaType);
|
|
wheelEvent.mMayHaveMomentum = mMayHaveMomentum;
|
|
wheelEvent.mIsMomentum = mIsMomentum;
|
|
wheelEvent.mDeltaX = mDeltaX;
|
|
wheelEvent.mDeltaY = mDeltaY;
|
|
wheelEvent.mWheelTicksX = mWheelTicksX;
|
|
wheelEvent.mWheelTicksY = mWheelTicksY;
|
|
wheelEvent.mLineOrPageDeltaX = mLineOrPageDeltaX;
|
|
wheelEvent.mLineOrPageDeltaY = mLineOrPageDeltaY;
|
|
wheelEvent.mAllowToOverrideSystemScrollSpeed =
|
|
mAllowToOverrideSystemScrollSpeed;
|
|
wheelEvent.mFlags.mHandledByAPZ = mHandledByAPZ;
|
|
wheelEvent.mFocusSequenceNumber = mFocusSequenceNumber;
|
|
return wheelEvent;
|
|
}
|
|
|
|
bool ScrollWheelInput::TransformToLocal(
|
|
const ScreenToParentLayerMatrix4x4& aTransform) {
|
|
Maybe<ParentLayerPoint> point = UntransformBy(aTransform, mOrigin);
|
|
if (!point) {
|
|
return false;
|
|
}
|
|
mLocalOrigin = *point;
|
|
return true;
|
|
}
|
|
|
|
bool ScrollWheelInput::IsCustomizedByUserPrefs() const {
|
|
return mUserDeltaMultiplierX != 1.0 || mUserDeltaMultiplierY != 1.0;
|
|
}
|
|
|
|
KeyboardInput::KeyboardInput(const WidgetKeyboardEvent& aEvent)
|
|
: InputData(KEYBOARD_INPUT, aEvent.mTimeStamp, aEvent.mModifiers),
|
|
mKeyCode(aEvent.mKeyCode),
|
|
mCharCode(aEvent.mCharCode),
|
|
mHandledByAPZ(false) {
|
|
switch (aEvent.mMessage) {
|
|
case eKeyPress: {
|
|
mType = KeyboardInput::KEY_PRESS;
|
|
break;
|
|
}
|
|
case eKeyUp: {
|
|
mType = KeyboardInput::KEY_UP;
|
|
break;
|
|
}
|
|
case eKeyDown: {
|
|
mType = KeyboardInput::KEY_DOWN;
|
|
break;
|
|
}
|
|
default:
|
|
mType = KeyboardInput::KEY_OTHER;
|
|
break;
|
|
}
|
|
|
|
aEvent.GetShortcutKeyCandidates(mShortcutCandidates);
|
|
}
|
|
|
|
KeyboardInput::KeyboardInput()
|
|
: InputData(KEYBOARD_INPUT),
|
|
mType(KEY_DOWN),
|
|
mKeyCode(0),
|
|
mCharCode(0),
|
|
mHandledByAPZ(false) {}
|
|
|
|
} // namespace mozilla
|