DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (dcc6d7a0dc00)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170
/* -*- 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/TouchBinding.h"
#include "mozilla/dom/TouchEvent.h"
#include "nsGlobalWindow.h"
#include "nsContentUtils.h"
#include "nsIContent.h"

namespace mozilla {
namespace dom {

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)
{
  mTarget = 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)
{
  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(const Touch& aOther)
  : mTarget(aOther.mTarget)
  , mRefPoint(aOther.mRefPoint)
  , mChanged(aOther.mChanged)
  , 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()
{
}

// static
bool
Touch::PrefEnabled(JSContext* aCx, JSObject* aGlobal)
{
  return TouchEvent::PrefEnabled(aCx, aGlobal);
}

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Touch, mTarget)

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)

EventTarget*
Touch::GetTarget() const
{
  nsCOMPtr<nsIContent> content = do_QueryInterface(mTarget);
  if (content && content->ChromeOnlyAccess() &&
      !nsContentUtils::LegacyIsCallerNativeCode() &&
      !nsContentUtils::CanAccessNativeAnon()) {
    return content->FindFirstNonChromeOnlyAccessContent();
  }

  return mTarget;
}

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);
  mPointsInitialized = true;
}

void
Touch::SetTarget(EventTarget* aTarget)
{
  mTarget = aTarget;
}

bool
Touch::Equals(Touch* aTouch)
{
  return mRefPoint == aTouch->mRefPoint &&
         mForce == aTouch->Force() &&
         mRotationAngle == aTouch->RotationAngle() &&
         mRadius.x == aTouch->RadiusX() &&
         mRadius.y == aTouch->RadiusY();
}

JSObject*
Touch::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
  return TouchBinding::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()
{
  if (!mTarget) {
    return nullptr;
  }
  return mTarget->GetOwnerGlobal();
}

} // namespace dom
} // namespace mozilla