LCOV - code coverage report
Current view: directory - content/events/src - nsDOMTouchEvent.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 201 10 5.0 %
Date: 2012-04-21 Functions: 49 3 6.1 %

       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            1396 : 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                 : 
     164                 : DOMCI_DATA(TouchList, nsDOMTouchList)
     165                 : 
     166            1396 : NS_IMPL_CYCLE_COLLECTION_CLASS(nsDOMTouchList)
     167                 : 
     168               0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMTouchList)
     169               0 :   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
     170               0 :   NS_INTERFACE_MAP_ENTRY(nsISupports)
     171               0 :   NS_INTERFACE_MAP_ENTRY(nsIDOMTouchList)
     172               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(TouchList)
     173               0 : NS_INTERFACE_MAP_END
     174                 : 
     175               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsDOMTouchList)
     176               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSTARRAY_OF_NSCOMPTR(mPoints)
     177               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mParent)
     178               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
     179               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
     180               0 : NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsDOMTouchList)
     181               0 :   NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
     182               0 : NS_IMPL_CYCLE_COLLECTION_TRACE_END
     183               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsDOMTouchList)
     184               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSTARRAY(mPoints)
     185               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mParent)
     186               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
     187               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
     188                 : 
     189               0 : NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMTouchList)
     190               0 : NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMTouchList)
     191                 : 
     192                 : NS_IMETHODIMP
     193               0 : nsDOMTouchList::GetLength(PRUint32* aLength)
     194                 : {
     195               0 :   *aLength = mPoints.Length();
     196               0 :   return NS_OK;
     197                 : }
     198                 : 
     199                 : NS_IMETHODIMP
     200               0 : nsDOMTouchList::Item(PRUint32 aIndex, nsIDOMTouch** aRetVal)
     201                 : {
     202               0 :   NS_IF_ADDREF(*aRetVal = nsDOMTouchList::GetItemAt(aIndex));
     203               0 :   return NS_OK;
     204                 : }
     205                 : 
     206                 : NS_IMETHODIMP
     207               0 : nsDOMTouchList::IdentifiedTouch(PRInt32 aIdentifier, nsIDOMTouch** aRetVal)
     208                 : {
     209               0 :   *aRetVal = nsnull;
     210               0 :   for (PRUint32 i = 0; i < mPoints.Length(); ++i) {
     211               0 :     nsCOMPtr<nsIDOMTouch> point = mPoints[i];
     212                 :     PRInt32 identifier;
     213               0 :     if (point && NS_SUCCEEDED(point->GetIdentifier(&identifier)) &&
     214                 :         aIdentifier == identifier) {
     215               0 :       point.swap(*aRetVal);
     216                 :       break;
     217                 :     }
     218                 :   }
     219               0 :   return NS_OK;
     220                 : }
     221                 : 
     222                 : nsIDOMTouch*
     223               0 : nsDOMTouchList::GetItemAt(PRUint32 aIndex)
     224                 : {
     225               0 :   return mPoints.SafeElementAt(aIndex, nsnull);
     226                 : }
     227                 : 
     228                 : // TouchEvent
     229                 : 
     230               0 : nsDOMTouchEvent::nsDOMTouchEvent(nsPresContext* aPresContext,
     231                 :                                  nsTouchEvent* aEvent)
     232                 :   : nsDOMUIEvent(aPresContext, aEvent ? aEvent :
     233               0 :                                         new nsTouchEvent(false, 0, nsnull))
     234                 : {
     235               0 :   if (aEvent) {
     236               0 :     mEventIsInternal = false;
     237                 : 
     238               0 :     for (PRUint32 i = 0; i < aEvent->touches.Length(); ++i) {
     239               0 :       nsIDOMTouch *touch = aEvent->touches[i];
     240               0 :       nsDOMTouch *domtouch = static_cast<nsDOMTouch*>(touch);
     241               0 :       domtouch->InitializePoints(mPresContext, aEvent);
     242                 :     }
     243                 :   } else {
     244               0 :     mEventIsInternal = true;
     245               0 :     mEvent->time = PR_Now();
     246                 :   }
     247               0 : }
     248                 : 
     249               0 : nsDOMTouchEvent::~nsDOMTouchEvent()
     250                 : {
     251               0 :   if (mEventIsInternal && mEvent) {
     252               0 :     delete static_cast<nsTouchEvent*>(mEvent);
     253               0 :     mEvent = nsnull;
     254                 :   }
     255               0 : }
     256                 : 
     257            1396 : NS_IMPL_CYCLE_COLLECTION_CLASS(nsDOMTouchEvent)
     258                 : 
     259               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(nsDOMTouchEvent, nsDOMUIEvent)
     260               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mTouches)
     261               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mTargetTouches)
     262               0 :   NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mChangedTouches)
     263               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
     264                 : 
     265               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsDOMTouchEvent, nsDOMUIEvent)
     266               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mTouches)
     267               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mTargetTouches)
     268               0 :   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mChangedTouches)
     269               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
     270                 : 
     271                 : DOMCI_DATA(TouchEvent, nsDOMTouchEvent)
     272                 : 
     273               0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(nsDOMTouchEvent)
     274               0 :   NS_INTERFACE_MAP_ENTRY(nsIDOMTouchEvent)
     275               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(TouchEvent)
     276               0 : NS_INTERFACE_MAP_END_INHERITING(nsDOMUIEvent)
     277                 : 
     278               0 : NS_IMPL_ADDREF_INHERITED(nsDOMTouchEvent, nsDOMUIEvent)
     279               0 : NS_IMPL_RELEASE_INHERITED(nsDOMTouchEvent, nsDOMUIEvent)
     280                 : 
     281                 : 
     282                 : NS_IMETHODIMP
     283               0 : nsDOMTouchEvent::InitTouchEvent(const nsAString& aType,
     284                 :                                 bool aCanBubble,
     285                 :                                 bool aCancelable,
     286                 :                                 nsIDOMWindow* aView,
     287                 :                                 PRInt32 aDetail,
     288                 :                                 bool aCtrlKey,
     289                 :                                 bool aAltKey,
     290                 :                                 bool aShiftKey,
     291                 :                                 bool aMetaKey,
     292                 :                                 nsIDOMTouchList* aTouches,
     293                 :                                 nsIDOMTouchList* aTargetTouches,
     294                 :                                 nsIDOMTouchList* aChangedTouches)
     295                 : {
     296                 :   nsresult rv = nsDOMUIEvent::InitUIEvent(aType,
     297                 :                                           aCanBubble,
     298                 :                                           aCancelable,
     299                 :                                           aView,
     300               0 :                                           aDetail);
     301               0 :   NS_ENSURE_SUCCESS(rv, rv);
     302                 : 
     303               0 :   static_cast<nsInputEvent*>(mEvent)->isControl = aCtrlKey;
     304               0 :   static_cast<nsInputEvent*>(mEvent)->isAlt = aAltKey;
     305               0 :   static_cast<nsInputEvent*>(mEvent)->isShift = aShiftKey;
     306               0 :   static_cast<nsInputEvent*>(mEvent)->isMeta = aMetaKey;
     307               0 :   mTouches = aTouches;
     308               0 :   mTargetTouches = aTargetTouches;
     309               0 :   mChangedTouches = aChangedTouches;
     310               0 :   return NS_OK;
     311                 : }
     312                 : 
     313                 : NS_IMETHODIMP
     314               0 : nsDOMTouchEvent::GetTouches(nsIDOMTouchList** aTouches)
     315                 : {
     316               0 :   NS_ENSURE_ARG_POINTER(aTouches);
     317               0 :   NS_ENSURE_STATE(mEvent);
     318               0 :   nsRefPtr<nsDOMTouchList> t;
     319                 : 
     320               0 :   if (mTouches) {
     321               0 :     return CallQueryInterface(mTouches, aTouches);
     322                 :   }
     323                 : 
     324               0 :   nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(mEvent);
     325               0 :   if (mEvent->message == NS_TOUCH_END || mEvent->message == NS_TOUCH_CANCEL) {
     326                 :     // for touchend events, remove any changed touches from the touches array
     327               0 :     nsTArray<nsCOMPtr<nsIDOMTouch> > unchangedTouches;
     328               0 :     nsTArray<nsCOMPtr<nsIDOMTouch> > touches = touchEvent->touches;
     329               0 :     for (PRUint32 i = 0; i < touches.Length(); ++i) {
     330               0 :       if (!touches[i]->mChanged) {
     331               0 :         unchangedTouches.AppendElement(touches[i]);
     332                 :       }
     333                 :     }
     334                 :     t = new nsDOMTouchList(static_cast<nsIDOMTouchEvent*>(this),
     335               0 :                            unchangedTouches);
     336                 :   } else {
     337                 :     t = new nsDOMTouchList(static_cast<nsIDOMTouchEvent*>(this),
     338               0 :                            touchEvent->touches);
     339                 :   }
     340               0 :   mTouches = t;
     341               0 :   return CallQueryInterface(mTouches, aTouches);
     342                 : }
     343                 : 
     344                 : NS_IMETHODIMP
     345               0 : nsDOMTouchEvent::GetTargetTouches(nsIDOMTouchList** aTargetTouches)
     346                 : {
     347               0 :   NS_ENSURE_ARG_POINTER(aTargetTouches);
     348               0 :   NS_ENSURE_STATE(mEvent);
     349                 : 
     350               0 :   if (mTargetTouches) {
     351               0 :     return CallQueryInterface(mTargetTouches, aTargetTouches);
     352                 :   }
     353                 : 
     354               0 :   nsTArray<nsCOMPtr<nsIDOMTouch> > targetTouches;
     355               0 :   nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(mEvent);
     356               0 :   nsTArray<nsCOMPtr<nsIDOMTouch> > touches = touchEvent->touches;
     357               0 :   for (PRUint32 i = 0; i < touches.Length(); ++i) {
     358                 :     // for touchend/cancel events, don't append to the target list if this is a
     359                 :     // touch that is ending
     360               0 :     if ((mEvent->message != NS_TOUCH_END &&
     361               0 :          mEvent->message != NS_TOUCH_CANCEL) || !touches[i]->mChanged) {
     362               0 :       nsIDOMEventTarget* targetPtr = touches[i]->GetTarget();
     363               0 :       if (targetPtr == mEvent->target) {
     364               0 :         targetTouches.AppendElement(touches[i]);
     365                 :       }
     366                 :     }
     367                 :   }
     368                 :   mTargetTouches = new nsDOMTouchList(static_cast<nsIDOMTouchEvent*>(this),
     369               0 :                                       targetTouches);
     370               0 :   return CallQueryInterface(mTargetTouches, aTargetTouches);
     371                 : }
     372                 : 
     373                 : NS_IMETHODIMP
     374               0 : nsDOMTouchEvent::GetChangedTouches(nsIDOMTouchList** aChangedTouches)
     375                 : {
     376               0 :   NS_ENSURE_ARG_POINTER(aChangedTouches);
     377               0 :   NS_ENSURE_STATE(mEvent);
     378                 : 
     379               0 :   if (mChangedTouches) {
     380               0 :     return CallQueryInterface(mChangedTouches, aChangedTouches);
     381                 :   }
     382                 : 
     383               0 :   nsTArray<nsCOMPtr<nsIDOMTouch> > changedTouches;
     384               0 :   nsTouchEvent* touchEvent = static_cast<nsTouchEvent*>(mEvent);
     385               0 :   nsTArray<nsCOMPtr<nsIDOMTouch> > touches = touchEvent->touches;
     386               0 :   for (PRUint32 i = 0; i < touches.Length(); ++i) {
     387               0 :     if (touches[i]->mChanged) {
     388               0 :       changedTouches.AppendElement(touches[i]);
     389                 :     }
     390                 :   }
     391                 :   mChangedTouches = new nsDOMTouchList(static_cast<nsIDOMTouchEvent*>(this),
     392               0 :                                        changedTouches);
     393               0 :   return CallQueryInterface(mChangedTouches, aChangedTouches);
     394                 : }
     395                 : 
     396                 : NS_IMETHODIMP
     397               0 : nsDOMTouchEvent::GetAltKey(bool* aAltKey)
     398                 : {
     399               0 :   *aAltKey = static_cast<nsInputEvent*>(mEvent)->isAlt;
     400               0 :   return NS_OK;
     401                 : }
     402                 : 
     403                 : NS_IMETHODIMP
     404               0 : nsDOMTouchEvent::GetMetaKey(bool* aMetaKey)
     405                 : {
     406               0 :   *aMetaKey = static_cast<nsInputEvent*>(mEvent)->isMeta;
     407               0 :   return NS_OK;
     408                 : }
     409                 : 
     410                 : NS_IMETHODIMP
     411               0 : nsDOMTouchEvent::GetCtrlKey(bool* aCtrlKey)
     412                 : {
     413               0 :   *aCtrlKey = static_cast<nsInputEvent*>(mEvent)->isControl;
     414               0 :   return NS_OK;
     415                 : }
     416                 : 
     417                 : NS_IMETHODIMP
     418               0 : nsDOMTouchEvent::GetShiftKey(bool* aShiftKey)
     419                 : {
     420               0 :   *aShiftKey = static_cast<nsInputEvent*>(mEvent)->isShift;
     421               0 :   return NS_OK;
     422                 : }
     423                 : 
     424                 : bool
     425           42395 : nsDOMTouchEvent::PrefEnabled()
     426                 : {
     427                 :   static bool sDidCheckPref = false;
     428                 :   static bool sPrefValue = false;
     429           42395 :   if (!sDidCheckPref) {
     430             305 :     sDidCheckPref = true;
     431             305 :     sPrefValue = Preferences::GetBool("dom.w3c_touch_events.enabled", false);
     432             305 :     if (sPrefValue) {
     433               0 :       nsContentUtils::InitializeTouchEventTable();
     434                 :     }
     435                 :   }
     436           42395 :   return sPrefValue;
     437                 : }
     438                 : 
     439                 : nsresult
     440               0 : NS_NewDOMTouchEvent(nsIDOMEvent** aInstancePtrResult,
     441                 :                     nsPresContext* aPresContext,
     442                 :                     nsTouchEvent *aEvent)
     443                 : {
     444               0 :   nsDOMTouchEvent* it = new nsDOMTouchEvent(aPresContext, aEvent);
     445                 : 
     446               0 :   return CallQueryInterface(it, aInstancePtrResult);
     447            4188 : }

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