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/* -*- 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 "mozilla/dom/Touch.h"
#include "mozilla/dom/EventTarget.h"
#include "mozilla/dom/TouchEvent.h"
#include "nsContentUtils.h"
#include "nsIContent.h"
namespace mozilla::dom {
// static
already_AddRefed<Touch> Touch::Constructor(const GlobalObject& aGlobal,
const TouchInit& aParam) {
// Annoyingly many parameters, make sure the ordering is the same as in the
// Touch constructor.
RefPtr<Touch> touch = new Touch(
aParam.mTarget, aParam.mIdentifier, aParam.mPageX, aParam.mPageY,
aParam.mScreenX, aParam.mScreenY, aParam.mClientX, aParam.mClientY,
aParam.mRadiusX, aParam.mRadiusY, aParam.mRotationAngle, aParam.mForce);
return touch.forget();
}
Touch::Touch(EventTarget* aTarget, int32_t aIdentifier, int32_t aPageX,
int32_t aPageY, int32_t aScreenX, int32_t aScreenY,
int32_t aClientX, int32_t aClientY, int32_t aRadiusX,
int32_t aRadiusY, float aRotationAngle, float aForce)
: mIsTouchEventSuppressed(false) {
mTarget = aTarget;
mOriginalTarget = aTarget;
mIdentifier = aIdentifier;
mPagePoint = CSSIntPoint(aPageX, aPageY);
mScreenPoint = CSSIntPoint(aScreenX, aScreenY);
mClientPoint = CSSIntPoint(aClientX, aClientY);
mRefPoint = LayoutDeviceIntPoint(0, 0);
mPointsInitialized = true;
mRadius.x = aRadiusX;
mRadius.y = aRadiusY;
mRotationAngle = aRotationAngle;
mForce = aForce;
mChanged = false;
mMessage = 0;
nsJSContext::LikelyShortLivingObjectCreated();
}
Touch::Touch(int32_t aIdentifier, LayoutDeviceIntPoint aPoint,
LayoutDeviceIntPoint aRadius, float aRotationAngle, float aForce)
: mIsTouchEventSuppressed(false) {
mIdentifier = aIdentifier;
mPagePoint = CSSIntPoint(0, 0);
mScreenPoint = CSSIntPoint(0, 0);
mClientPoint = CSSIntPoint(0, 0);
mRefPoint = aPoint;
mPointsInitialized = false;
mRadius = aRadius;
mRotationAngle = aRotationAngle;
mForce = aForce;
mChanged = false;
mMessage = 0;
nsJSContext::LikelyShortLivingObjectCreated();
}
Touch::Touch(int32_t aIdentifier, LayoutDeviceIntPoint aPoint,
LayoutDeviceIntPoint aRadius, float aRotationAngle, float aForce,
int32_t aTiltX, int32_t aTiltY, int32_t aTwist)
: Touch(aIdentifier, aPoint, aRadius, aRotationAngle, aForce) {
tiltX = aTiltX;
tiltY = aTiltY;
twist = aTwist;
}
Touch::Touch(const Touch& aOther)
: mOriginalTarget(aOther.mOriginalTarget),
mTarget(aOther.mTarget),
mRefPoint(aOther.mRefPoint),
mChanged(aOther.mChanged),
mIsTouchEventSuppressed(aOther.mIsTouchEventSuppressed),
mMessage(aOther.mMessage),
mIdentifier(aOther.mIdentifier),
mPagePoint(aOther.mPagePoint),
mClientPoint(aOther.mClientPoint),
mScreenPoint(aOther.mScreenPoint),
mRadius(aOther.mRadius),
mRotationAngle(aOther.mRotationAngle),
mForce(aOther.mForce),
mPointsInitialized(aOther.mPointsInitialized) {
nsJSContext::LikelyShortLivingObjectCreated();
}
Touch::~Touch() = default;
// static
bool Touch::PrefEnabled(JSContext* aCx, JSObject* aGlobal) {
return TouchEvent::PrefEnabled(aCx, aGlobal);
}
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Touch, mTarget, mOriginalTarget)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Touch)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(Touch)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Touch)
static EventTarget* FindFirstNonChromeOnlyAccessContent(EventTarget* aTarget) {
nsIContent* content = nsIContent::FromEventTargetOrNull(aTarget);
if (content && content->ChromeOnlyAccess() &&
!nsContentUtils::LegacyIsCallerNativeCode() &&
!nsContentUtils::CanAccessNativeAnon()) {
return content->FindFirstNonChromeOnlyAccessContent();
}
return aTarget;
}
EventTarget* Touch::GetTarget() const {
return FindFirstNonChromeOnlyAccessContent(mTarget);
}
EventTarget* Touch::GetOriginalTarget() const {
return FindFirstNonChromeOnlyAccessContent(mOriginalTarget);
}
int32_t Touch::ScreenX(CallerType aCallerType) const {
if (nsContentUtils::ShouldResistFingerprinting(aCallerType, GetParentObject(),
RFPTarget::TouchEvents)) {
return ClientX();
}
return mScreenPoint.x;
}
int32_t Touch::ScreenY(CallerType aCallerType) const {
if (nsContentUtils::ShouldResistFingerprinting(aCallerType, GetParentObject(),
RFPTarget::TouchEvents)) {
return ClientY();
}
return mScreenPoint.y;
}
int32_t Touch::RadiusX(CallerType aCallerType) const {
if (nsContentUtils::ShouldResistFingerprinting(aCallerType, GetParentObject(),
RFPTarget::TouchEvents)) {
return 0;
}
return mRadius.x;
}
int32_t Touch::RadiusY(CallerType aCallerType) const {
if (nsContentUtils::ShouldResistFingerprinting(aCallerType, GetParentObject(),
RFPTarget::TouchEvents)) {
return 0;
}
return mRadius.y;
}
float Touch::RotationAngle(CallerType aCallerType) const {
if (nsContentUtils::ShouldResistFingerprinting(aCallerType, GetParentObject(),
RFPTarget::TouchEvents)) {
return 0.0f;
}
return mRotationAngle;
}
float Touch::Force(CallerType aCallerType) const {
if (nsContentUtils::ShouldResistFingerprinting(aCallerType, GetParentObject(),
RFPTarget::TouchEvents)) {
return 0.0f;
}
return mForce;
}
void Touch::InitializePoints(nsPresContext* aPresContext, WidgetEvent* aEvent) {
if (mPointsInitialized) {
return;
}
mClientPoint =
Event::GetClientCoords(aPresContext, aEvent, mRefPoint, mClientPoint);
mPagePoint =
Event::GetPageCoords(aPresContext, aEvent, mRefPoint, mClientPoint);
mScreenPoint =
Event::GetScreenCoords(aPresContext, aEvent, mRefPoint).extract();
mPointsInitialized = true;
}
void Touch::SetTouchTarget(EventTarget* aTarget) {
mOriginalTarget = aTarget;
mTarget = aTarget;
}
bool Touch::Equals(Touch* aTouch) const {
return mRefPoint == aTouch->mRefPoint && mForce == aTouch->mForce &&
mRotationAngle == aTouch->mRotationAngle &&
mRadius.x == aTouch->mRadius.x && mRadius.y == aTouch->mRadius.y;
}
void Touch::SetSameAs(const Touch* aTouch) {
mRefPoint = aTouch->mRefPoint;
mForce = aTouch->mForce;
mRotationAngle = aTouch->mRotationAngle;
mRadius.x = aTouch->mRadius.x;
mRadius.y = aTouch->mRadius.y;
}
JSObject* Touch::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return Touch_Binding::Wrap(aCx, this, aGivenProto);
}
// Parent ourselves to the global of the target. This achieves the desirable
// effects of parenting to the target, but avoids making the touch inaccessible
// when the target happens to be NAC and therefore reflected into the XBL scope.
nsIGlobalObject* Touch::GetParentObject() const {
if (!mOriginalTarget) {
return nullptr;
}
return mOriginalTarget->GetOwnerGlobal();
}
} // namespace mozilla::dom
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