LCOV - code coverage report
Current view: directory - content/events/src - nsDOMTouchEvent.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 194 10 5.2 %
Date: 2012-06-02 Functions: 48 3 6.2 %

       1                 : /* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is nsDOMTouchEvent.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is the Mozilla Foundation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2011
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Olli Pettay <Olli.Pettay@helsinki.fi> (Original Author)
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "nsDOMTouchEvent.h"
      39                 : #include "nsGUIEvent.h"
      40                 : #include "nsDOMClassInfoID.h"
      41                 : #include "nsIClassInfo.h"
      42                 : #include "nsIXPCScriptable.h"
      43                 : #include "nsContentUtils.h"
      44                 : #include "mozilla/Preferences.h"
      45                 : #include "nsPresContext.h"
      46                 : 
      47                 : using namespace mozilla;
      48                 : 
      49                 : DOMCI_DATA(Touch, nsDOMTouch)
      50                 : 
      51            1464 : NS_IMPL_CYCLE_COLLECTION_1(nsDOMTouch, mTarget)
      52                 : 
      53               0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMTouch)
      54               0 :   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMTouch)
      55               0 :   NS_INTERFACE_MAP_ENTRY(nsIDOMTouch)
      56               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(Touch)
      57               0 : NS_INTERFACE_MAP_END
      58                 : 
      59               0 : NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMTouch)
      60               0 : NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMTouch)
      61                 : 
      62                 : NS_IMETHODIMP
      63               0 : nsDOMTouch::GetIdentifier(PRInt32* aIdentifier)
      64                 : {
      65               0 :   *aIdentifier = mIdentifier;
      66               0 :   return NS_OK;
      67                 : }
      68                 : 
      69                 : NS_IMETHODIMP
      70               0 : nsDOMTouch::GetTarget(nsIDOMEventTarget** aTarget)
      71                 : {
      72               0 :   NS_IF_ADDREF(*aTarget = mTarget);
      73               0 :   return NS_OK;
      74                 : }
      75                 : 
      76                 : NS_IMETHODIMP
      77               0 : nsDOMTouch::GetScreenX(PRInt32* aScreenX)
      78                 : {
      79               0 :   *aScreenX = mScreenPoint.x;
      80               0 :   return NS_OK;
      81                 : }
      82                 : 
      83                 : NS_IMETHODIMP
      84               0 : nsDOMTouch::GetScreenY(PRInt32* aScreenY)
      85                 : {
      86               0 :   *aScreenY = mScreenPoint.y;
      87               0 :   return NS_OK;
      88                 : }
      89                 : 
      90                 : NS_IMETHODIMP
      91               0 : nsDOMTouch::GetClientX(PRInt32* aClientX)
      92                 : {
      93               0 :   *aClientX = mClientPoint.x;
      94               0 :   return NS_OK;
      95                 : }
      96                 : 
      97                 : NS_IMETHODIMP
      98               0 : nsDOMTouch::GetClientY(PRInt32* aClientY)
      99                 : {
     100               0 :   *aClientY = mClientPoint.y;
     101               0 :   return NS_OK;
     102                 : }
     103                 : 
     104                 : NS_IMETHODIMP
     105               0 : nsDOMTouch::GetPageX(PRInt32* aPageX)
     106                 : {
     107               0 :   *aPageX = mPagePoint.x;
     108               0 :   return NS_OK;
     109                 : }
     110                 : 
     111                 : NS_IMETHODIMP
     112               0 : nsDOMTouch::GetPageY(PRInt32* aPageY)
     113                 : {
     114               0 :   *aPageY = mPagePoint.y;
     115               0 :   return NS_OK;
     116                 : }
     117                 : 
     118                 : NS_IMETHODIMP
     119               0 : nsDOMTouch::GetRadiusX(PRInt32* aRadiusX)
     120                 : {
     121               0 :   *aRadiusX = mRadius.x;
     122               0 :   return NS_OK;
     123                 : }
     124                 :                                              
     125                 : NS_IMETHODIMP
     126               0 : nsDOMTouch::GetRadiusY(PRInt32* aRadiusY)
     127                 : {
     128               0 :   *aRadiusY = mRadius.y;
     129               0 :   return NS_OK;
     130                 : }
     131                 : 
     132                 : NS_IMETHODIMP
     133               0 : nsDOMTouch::GetRotationAngle(float* aRotationAngle)
     134                 : {
     135               0 :   *aRotationAngle = mRotationAngle;
     136               0 :   return NS_OK;
     137                 : }
     138                 : 
     139                 : NS_IMETHODIMP
     140               0 : nsDOMTouch::GetForce(float* aForce)
     141                 : {
     142               0 :   *aForce = mForce;
     143               0 :   return NS_OK;
     144                 : }
     145                 : 
     146                 : bool
     147               0 : nsDOMTouch::Equals(nsIDOMTouch* aTouch)
     148                 : {
     149                 :   float force;
     150                 :   float orientation;
     151                 :   PRInt32 radiusX, radiusY;
     152               0 :   aTouch->GetForce(&force);
     153               0 :   aTouch->GetRotationAngle(&orientation);
     154               0 :   aTouch->GetRadiusX(&radiusX);
     155               0 :   aTouch->GetRadiusY(&radiusY);
     156               0 :   return mRefPoint != aTouch->mRefPoint ||
     157                 :          (mForce != force) ||
     158                 :          (mRotationAngle != orientation) ||
     159               0 :          (mRadius.x != radiusX) || (mRadius.y != radiusY);
     160                 : }
     161                 : 
     162                 : // TouchList
     163               0 : nsDOMTouchList::nsDOMTouchList(nsTArray<nsCOMPtr<nsIDOMTouch> > &aTouches)
     164                 : {
     165               0 :   mPoints.AppendElements(aTouches);
     166               0 : }
     167                 : 
     168                 : DOMCI_DATA(TouchList, nsDOMTouchList)
     169                 : 
     170            1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(nsDOMTouchList)
     171                 : 
     172               0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMTouchList)
     173               0 :   NS_INTERFACE_MAP_ENTRY(nsISupports)
     174               0 :   NS_INTERFACE_MAP_ENTRY(nsIDOMTouchList)
     175               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(TouchList)
     176               0 : NS_INTERFACE_MAP_END
     177                 : 
     178               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsDOMTouchList)
     179               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSTARRAY_OF_NSCOMPTR(mPoints)
     180               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
     181                 : 
     182               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsDOMTouchList)
     183               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSTARRAY(mPoints)
     184               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
     185                 : 
     186               0 : NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMTouchList)
     187               0 : NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMTouchList)
     188                 : 
     189                 : NS_IMETHODIMP
     190               0 : nsDOMTouchList::GetLength(PRUint32* aLength)
     191                 : {
     192               0 :   *aLength = mPoints.Length();
     193               0 :   return NS_OK;
     194                 : }
     195                 : 
     196                 : NS_IMETHODIMP
     197               0 : nsDOMTouchList::Item(PRUint32 aIndex, nsIDOMTouch** aRetVal)
     198                 : {
     199               0 :   NS_IF_ADDREF(*aRetVal = mPoints.SafeElementAt(aIndex, nsnull));
     200               0 :   return NS_OK;
     201                 : }
     202                 : 
     203                 : NS_IMETHODIMP
     204               0 : nsDOMTouchList::IdentifiedTouch(PRInt32 aIdentifier, nsIDOMTouch** aRetVal)
     205                 : {
     206               0 :   *aRetVal = nsnull;
     207               0 :   for (PRUint32 i = 0; i < mPoints.Length(); ++i) {
     208               0 :     nsCOMPtr<nsIDOMTouch> point = mPoints[i];
     209                 :     PRInt32 identifier;
     210               0 :     if (point && NS_SUCCEEDED(point->GetIdentifier(&identifier)) &&
     211                 :         aIdentifier == identifier) {
     212               0 :       point.swap(*aRetVal);
     213                 :       break;
     214                 :     }
     215                 :   }
     216               0 :   return NS_OK;
     217                 : }
     218                 : 
     219                 : // TouchEvent
     220                 : 
     221               0 : nsDOMTouchEvent::nsDOMTouchEvent(nsPresContext* aPresContext,
     222                 :                                  nsTouchEvent* aEvent)
     223                 :   : nsDOMUIEvent(aPresContext, aEvent ? aEvent :
     224               0 :                                         new nsTouchEvent(false, 0, nsnull))
     225                 : {
     226               0 :   if (aEvent) {
     227               0 :     mEventIsInternal = false;
     228                 : 
     229               0 :     for (PRUint32 i = 0; i < aEvent->touches.Length(); ++i) {
     230               0 :       nsIDOMTouch *touch = aEvent->touches[i];
     231               0 :       nsDOMTouch *domtouch = static_cast<nsDOMTouch*>(touch);
     232               0 :       domtouch->InitializePoints(mPresContext, aEvent);
     233                 :     }
     234                 :   } else {
     235               0 :     mEventIsInternal = true;
     236               0 :     mEvent->time = PR_Now();
     237                 :   }
     238               0 : }
     239                 : 
     240               0 : nsDOMTouchEvent::~nsDOMTouchEvent()
     241                 : {
     242               0 :   if (mEventIsInternal && mEvent) {
     243               0 :     delete static_cast<nsTouchEvent*>(mEvent);
     244               0 :     mEvent = nsnull;
     245                 :   }
     246               0 : }
     247                 : 
     248            1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(nsDOMTouchEvent)
     249                 : 
     250               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(nsDOMTouchEvent, nsDOMUIEvent)
     251               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mTouches)
     252               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mTargetTouches)
     253               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mChangedTouches)
     254               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
     255                 : 
     256               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsDOMTouchEvent, nsDOMUIEvent)
     257               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mTouches)
     258               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mTargetTouches)
     259               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mChangedTouches)
     260               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
     261                 : 
     262                 : DOMCI_DATA(TouchEvent, nsDOMTouchEvent)
     263                 : 
     264               0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(nsDOMTouchEvent)
     265               0 :   NS_INTERFACE_MAP_ENTRY(nsIDOMTouchEvent)
     266               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(TouchEvent)
     267               0 : NS_INTERFACE_MAP_END_INHERITING(nsDOMUIEvent)
     268                 : 
     269               0 : NS_IMPL_ADDREF_INHERITED(nsDOMTouchEvent, nsDOMUIEvent)
     270               0 : NS_IMPL_RELEASE_INHERITED(nsDOMTouchEvent, nsDOMUIEvent)
     271                 : 
     272                 : 
     273                 : NS_IMETHODIMP
     274               0 : nsDOMTouchEvent::InitTouchEvent(const nsAString& aType,
     275                 :                                 bool aCanBubble,
     276                 :                                 bool aCancelable,
     277                 :                                 nsIDOMWindow* aView,
     278                 :                                 PRInt32 aDetail,
     279                 :                                 bool aCtrlKey,
     280                 :                                 bool aAltKey,
     281                 :                                 bool aShiftKey,
     282                 :                                 bool aMetaKey,
     283                 :                                 nsIDOMTouchList* aTouches,
     284                 :                                 nsIDOMTouchList* aTargetTouches,
     285                 :                                 nsIDOMTouchList* aChangedTouches)
     286                 : {
     287                 :   nsresult rv = nsDOMUIEvent::InitUIEvent(aType,
     288                 :                                           aCanBubble,
     289                 :                                           aCancelable,
     290                 :                                           aView,
     291               0 :                                           aDetail);
     292               0 :   NS_ENSURE_SUCCESS(rv, rv);
     293                 : 
     294               0 :   static_cast<nsInputEvent*>(mEvent)->isControl = aCtrlKey;
     295               0 :   static_cast<nsInputEvent*>(mEvent)->isAlt = aAltKey;
     296               0 :   static_cast<nsInputEvent*>(mEvent)->isShift = aShiftKey;
     297               0 :   static_cast<nsInputEvent*>(mEvent)->isMeta = aMetaKey;
     298               0 :   mTouches = aTouches;
     299               0 :   mTargetTouches = aTargetTouches;
     300               0 :   mChangedTouches = aChangedTouches;
     301               0 :   return NS_OK;
     302                 : }
     303                 : 
     304                 : NS_IMETHODIMP
     305               0 : nsDOMTouchEvent::GetTouches(nsIDOMTouchList** aTouches)
     306                 : {
     307               0 :   NS_ENSURE_ARG_POINTER(aTouches);
     308               0 :   NS_ENSURE_STATE(mEvent);
     309               0 :   nsRefPtr<nsDOMTouchList> t;
     310                 : 
     311               0 :   if (mTouches) {
     312               0 :     return CallQueryInterface(mTouches, aTouches);
     313                 :   }
     314                 : 
     315               0 :   nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(mEvent);
     316               0 :   if (mEvent->message == NS_TOUCH_END || mEvent->message == NS_TOUCH_CANCEL) {
     317                 :     // for touchend events, remove any changed touches from the touches array
     318               0 :     nsTArray<nsCOMPtr<nsIDOMTouch> > unchangedTouches;
     319               0 :     nsTArray<nsCOMPtr<nsIDOMTouch> > touches = touchEvent->touches;
     320               0 :     for (PRUint32 i = 0; i < touches.Length(); ++i) {
     321               0 :       if (!touches[i]->mChanged) {
     322               0 :         unchangedTouches.AppendElement(touches[i]);
     323                 :       }
     324                 :     }
     325               0 :     t = new nsDOMTouchList(unchangedTouches);
     326                 :   } else {
     327               0 :     t = new nsDOMTouchList(touchEvent->touches);
     328                 :   }
     329               0 :   mTouches = t;
     330               0 :   return CallQueryInterface(mTouches, aTouches);
     331                 : }
     332                 : 
     333                 : NS_IMETHODIMP
     334               0 : nsDOMTouchEvent::GetTargetTouches(nsIDOMTouchList** aTargetTouches)
     335                 : {
     336               0 :   NS_ENSURE_ARG_POINTER(aTargetTouches);
     337               0 :   NS_ENSURE_STATE(mEvent);
     338                 : 
     339               0 :   if (mTargetTouches) {
     340               0 :     return CallQueryInterface(mTargetTouches, aTargetTouches);
     341                 :   }
     342                 : 
     343               0 :   nsTArray<nsCOMPtr<nsIDOMTouch> > targetTouches;
     344               0 :   nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(mEvent);
     345               0 :   nsTArray<nsCOMPtr<nsIDOMTouch> > touches = touchEvent->touches;
     346               0 :   for (PRUint32 i = 0; i < touches.Length(); ++i) {
     347                 :     // for touchend/cancel events, don't append to the target list if this is a
     348                 :     // touch that is ending
     349               0 :     if ((mEvent->message != NS_TOUCH_END &&
     350               0 :          mEvent->message != NS_TOUCH_CANCEL) || !touches[i]->mChanged) {
     351               0 :       nsIDOMEventTarget* targetPtr = touches[i]->GetTarget();
     352               0 :       if (targetPtr == mEvent->target) {
     353               0 :         targetTouches.AppendElement(touches[i]);
     354                 :       }
     355                 :     }
     356                 :   }
     357               0 :   mTargetTouches = new nsDOMTouchList(targetTouches);
     358               0 :   return CallQueryInterface(mTargetTouches, aTargetTouches);
     359                 : }
     360                 : 
     361                 : NS_IMETHODIMP
     362               0 : nsDOMTouchEvent::GetChangedTouches(nsIDOMTouchList** aChangedTouches)
     363                 : {
     364               0 :   NS_ENSURE_ARG_POINTER(aChangedTouches);
     365               0 :   NS_ENSURE_STATE(mEvent);
     366                 : 
     367               0 :   if (mChangedTouches) {
     368               0 :     return CallQueryInterface(mChangedTouches, aChangedTouches);
     369                 :   }
     370                 : 
     371               0 :   nsTArray<nsCOMPtr<nsIDOMTouch> > changedTouches;
     372               0 :   nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(mEvent);
     373               0 :   nsTArray<nsCOMPtr<nsIDOMTouch> > touches = touchEvent->touches;
     374               0 :   for (PRUint32 i = 0; i < touches.Length(); ++i) {
     375               0 :     if (touches[i]->mChanged) {
     376               0 :       changedTouches.AppendElement(touches[i]);
     377                 :     }
     378                 :   }
     379               0 :   mChangedTouches = new nsDOMTouchList(changedTouches);
     380               0 :   return CallQueryInterface(mChangedTouches, aChangedTouches);
     381                 : }
     382                 : 
     383                 : NS_IMETHODIMP
     384               0 : nsDOMTouchEvent::GetAltKey(bool* aAltKey)
     385                 : {
     386               0 :   *aAltKey = static_cast<nsInputEvent*>(mEvent)->isAlt;
     387               0 :   return NS_OK;
     388                 : }
     389                 : 
     390                 : NS_IMETHODIMP
     391               0 : nsDOMTouchEvent::GetMetaKey(bool* aMetaKey)
     392                 : {
     393               0 :   *aMetaKey = static_cast<nsInputEvent*>(mEvent)->isMeta;
     394               0 :   return NS_OK;
     395                 : }
     396                 : 
     397                 : NS_IMETHODIMP
     398               0 : nsDOMTouchEvent::GetCtrlKey(bool* aCtrlKey)
     399                 : {
     400               0 :   *aCtrlKey = static_cast<nsInputEvent*>(mEvent)->isControl;
     401               0 :   return NS_OK;
     402                 : }
     403                 : 
     404                 : NS_IMETHODIMP
     405               0 : nsDOMTouchEvent::GetShiftKey(bool* aShiftKey)
     406                 : {
     407               0 :   *aShiftKey = static_cast<nsInputEvent*>(mEvent)->isShift;
     408               0 :   return NS_OK;
     409                 : }
     410                 : 
     411                 : bool
     412           42534 : nsDOMTouchEvent::PrefEnabled()
     413                 : {
     414                 :   static bool sDidCheckPref = false;
     415                 :   static bool sPrefValue = false;
     416           42534 :   if (!sDidCheckPref) {
     417             306 :     sDidCheckPref = true;
     418             306 :     sPrefValue = Preferences::GetBool("dom.w3c_touch_events.enabled", false);
     419             306 :     if (sPrefValue) {
     420               0 :       nsContentUtils::InitializeTouchEventTable();
     421                 :     }
     422                 :   }
     423           42534 :   return sPrefValue;
     424                 : }
     425                 : 
     426                 : nsresult
     427               0 : NS_NewDOMTouchEvent(nsIDOMEvent** aInstancePtrResult,
     428                 :                     nsPresContext* aPresContext,
     429                 :                     nsTouchEvent *aEvent)
     430                 : {
     431               0 :   nsDOMTouchEvent* it = new nsDOMTouchEvent(aPresContext, aEvent);
     432                 : 
     433               0 :   return CallQueryInterface(it, aInstancePtrResult);
     434            4392 : }

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