LCOV - code coverage report
Current view: directory - objdir/dist/include - CustomQS_Canvas2D.h (source / functions) Found Hit Coverage
Test: app.info Lines: 214 0 0.0 %
Date: 2012-06-02 Functions: 11 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       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 Gecko code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * the Mozilla Foundation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2010
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Vladimir Vukicevic <vladimir@pobox.com> (original author)
      24                 :  *   Ms2ger <ms2ger@gmail.com>
      25                 :  *   Yury <async.processingjs@yahoo.com>
      26                 :  *
      27                 :  * Alternatively, the contents of this file may be used under the terms of
      28                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      29                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      31                 :  * of those above. If you wish to allow use of your version of this file only
      32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      33                 :  * use your version of this file under the terms of the MPL, indicate your
      34                 :  * decision by deleting the provisions above and replace them with the notice
      35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      36                 :  * the provisions above, a recipient may use your version of this file under
      37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      38                 :  *
      39                 :  * ***** END LICENSE BLOCK ***** */
      40                 : 
      41                 : #include "nsDOMError.h"
      42                 : #include "nsIDOMCanvasRenderingContext2D.h"
      43                 : #include "CheckedInt.h"
      44                 : #include "nsMathUtils.h"
      45                 : 
      46                 : #include "jsapi.h"
      47                 : 
      48                 : typedef NS_STDCALL_FUNCPROTO(nsresult, CanvasStyleSetterType, nsIDOMCanvasRenderingContext2D,
      49                 :                              SetStrokeStyle_multi, (const nsAString &, nsISupports *));
      50                 : typedef NS_STDCALL_FUNCPROTO(nsresult, CanvasStyleGetterType, nsIDOMCanvasRenderingContext2D,
      51                 :                              GetStrokeStyle_multi, (nsAString &, nsISupports **, PRInt32 *));
      52                 : 
      53                 : static JSBool
      54               0 : Canvas2D_SetStyleHelper(JSContext *cx, JSObject *obj, jsid id, jsval *vp,
      55                 :                         CanvasStyleSetterType setfunc)
      56                 : {
      57               0 :     XPC_QS_ASSERT_CONTEXT_OK(cx);
      58                 :     nsIDOMCanvasRenderingContext2D *self;
      59               0 :     xpc_qsSelfRef selfref;
      60               0 :     JS::AutoValueRooter tvr(cx);
      61               0 :     if (!xpc_qsUnwrapThis(cx, obj, nsnull, &self, &selfref.ptr, tvr.jsval_addr(), nsnull))
      62               0 :         return JS_FALSE;
      63                 : 
      64               0 :     nsresult rv = NS_OK;
      65               0 :     if (JSVAL_IS_STRING(*vp)) {
      66                 :         xpc_qsDOMString arg0(cx, *vp, vp,
      67                 :                              xpc_qsDOMString::eDefaultNullBehavior,
      68               0 :                              xpc_qsDOMString::eDefaultUndefinedBehavior);
      69               0 :         if (!arg0.IsValid())
      70               0 :             return JS_FALSE;
      71                 : 
      72               0 :         rv = (self->*setfunc)(arg0, nsnull);
      73                 :     } else {
      74                 :         nsISupports *arg0;
      75               0 :         xpc_qsSelfRef arg0ref;
      76               0 :         rv = xpc_qsUnwrapArg<nsISupports>(cx, *vp, &arg0, &arg0ref.ptr, vp);
      77               0 :         if (NS_FAILED(rv)) {
      78               0 :             xpc_qsThrowBadSetterValue(cx, rv, JSVAL_TO_OBJECT(*tvr.jsval_addr()), id);
      79               0 :             return JS_FALSE;
      80                 :         }
      81                 : 
      82               0 :         rv = (self->*setfunc)(NullString(), arg0);
      83                 :     }
      84                 : 
      85               0 :     if (NS_FAILED(rv))
      86               0 :         return xpc_qsThrowGetterSetterFailed(cx, rv, JSVAL_TO_OBJECT(*tvr.jsval_addr()), id);
      87                 : 
      88               0 :     return JS_TRUE;
      89                 : }
      90                 : 
      91                 : static JSBool
      92               0 : Canvas2D_GetStyleHelper(JSContext *cx, JSObject *obj, jsid id, jsval *vp,
      93                 :                         CanvasStyleGetterType getfunc)
      94                 : {
      95               0 :     XPC_QS_ASSERT_CONTEXT_OK(cx);
      96                 :     nsIDOMCanvasRenderingContext2D *self;
      97               0 :     xpc_qsSelfRef selfref;
      98               0 :     XPCLazyCallContext lccx(JS_CALLER, cx, obj);
      99               0 :     if (!xpc_qsUnwrapThis(cx, obj, nsnull, &self, &selfref.ptr, vp, &lccx))
     100               0 :         return JS_FALSE;
     101                 :     nsresult rv;
     102                 : 
     103               0 :     nsString resultString;
     104               0 :     nsCOMPtr<nsISupports> resultInterface;
     105                 :     PRInt32 resultType;
     106               0 :     rv = (self->*getfunc)(resultString, getter_AddRefs(resultInterface), &resultType);
     107               0 :     if (NS_FAILED(rv))
     108               0 :         return xpc_qsThrowGetterSetterFailed(cx, rv, JSVAL_TO_OBJECT(*vp), id);
     109                 : 
     110               0 :     switch (resultType) {
     111                 :     case nsIDOMCanvasRenderingContext2D::CMG_STYLE_STRING:
     112               0 :         return xpc::StringToJsval(cx, resultString, vp);
     113                 : 
     114                 :     case nsIDOMCanvasRenderingContext2D::CMG_STYLE_PATTERN:
     115                 :     {
     116                 :         qsObjectHelper helper(resultInterface,
     117               0 :                               xpc_qsGetWrapperCache(resultInterface));
     118                 :         return xpc_qsXPCOMObjectToJsval(lccx, helper,
     119                 :                                         &NS_GET_IID(nsIDOMCanvasPattern),
     120               0 :                                         &interfaces[k_nsIDOMCanvasPattern], vp);
     121                 :     }
     122                 :     case nsIDOMCanvasRenderingContext2D::CMG_STYLE_GRADIENT:
     123                 :     {
     124                 :         qsObjectHelper helper(resultInterface,
     125               0 :                               xpc_qsGetWrapperCache(resultInterface));
     126                 :         return xpc_qsXPCOMObjectToJsval(lccx, helper,
     127                 :                                         &NS_GET_IID(nsIDOMCanvasGradient),
     128               0 :                                         &interfaces[k_nsIDOMCanvasGradient], vp);
     129                 :     }
     130                 :     default:
     131               0 :         return xpc_qsThrowGetterSetterFailed(cx, NS_ERROR_FAILURE, JSVAL_TO_OBJECT(*vp), id);
     132                 :     }
     133                 : }
     134                 : 
     135                 : static JSBool
     136               0 : nsIDOMCanvasRenderingContext2D_SetStrokeStyle(JSContext *cx, JSObject *obj, jsid id, JSBool strict, jsval *vp)
     137                 : {
     138               0 :     return Canvas2D_SetStyleHelper(cx, obj, id, vp, &nsIDOMCanvasRenderingContext2D::SetStrokeStyle_multi);
     139                 : }
     140                 : 
     141                 : static JSBool
     142               0 : nsIDOMCanvasRenderingContext2D_GetStrokeStyle(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
     143                 : {
     144               0 :     return Canvas2D_GetStyleHelper(cx, obj, id, vp, &nsIDOMCanvasRenderingContext2D::GetStrokeStyle_multi);
     145                 : }
     146                 : 
     147                 : static JSBool
     148               0 : nsIDOMCanvasRenderingContext2D_SetFillStyle(JSContext *cx, JSObject *obj, jsid id, JSBool strict, jsval *vp)
     149                 : {
     150               0 :     return Canvas2D_SetStyleHelper(cx, obj, id, vp, &nsIDOMCanvasRenderingContext2D::SetFillStyle_multi);
     151                 : }
     152                 : 
     153                 : static JSBool
     154               0 : nsIDOMCanvasRenderingContext2D_GetFillStyle(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
     155                 : {
     156               0 :     return Canvas2D_GetStyleHelper(cx, obj, id, vp, &nsIDOMCanvasRenderingContext2D::GetFillStyle_multi);
     157                 : }
     158                 : 
     159                 : static bool
     160               0 : CreateImageData(JSContext* cx,
     161                 :                 uint32_t w,
     162                 :                 uint32_t h,
     163                 :                 nsIDOMCanvasRenderingContext2D* self,
     164                 :                 int32_t x,
     165                 :                 int32_t y,
     166                 :                 jsval* vp)
     167                 : {
     168                 :     using mozilla::CheckedInt;
     169                 : 
     170               0 :     if (w == 0)
     171               0 :         w = 1;
     172               0 :     if (h == 0)
     173               0 :         h = 1;
     174                 : 
     175               0 :     CheckedInt<uint32_t> len = CheckedInt<uint32_t>(w) * h * 4;
     176               0 :     if (!len.valid()) {
     177               0 :         return xpc_qsThrow(cx, NS_ERROR_DOM_INDEX_SIZE_ERR);
     178                 :     }
     179                 : 
     180                 :     // Create the fast typed array; it's initialized to 0 by default.
     181                 :     JSObject* darray =
     182               0 :       js_CreateTypedArray(cx, js::TypedArray::TYPE_UINT8_CLAMPED, len.value());
     183               0 :     JS::AutoObjectRooter rd(cx, darray);
     184               0 :     if (!darray) {
     185               0 :         return false;
     186                 :     }
     187                 : 
     188               0 :     if (self) {
     189               0 :         JSObject *tdest = js::TypedArray::getTypedArray(darray);
     190                 : 
     191                 :         // make the call
     192                 :         nsresult rv =
     193                 :             self->GetImageData_explicit(x, y, w, h,
     194               0 :                                         static_cast<PRUint8*>(JS_GetTypedArrayData(tdest)),
     195               0 :                                         JS_GetTypedArrayByteLength(tdest));
     196               0 :         if (NS_FAILED(rv)) {
     197               0 :             return xpc_qsThrowMethodFailed(cx, rv, vp);
     198                 :         }
     199                 :     }
     200                 : 
     201                 :     // Do JS_NewObject after CreateTypedArray, so that gc will get
     202                 :     // triggered here if necessary
     203               0 :     JSObject* result = JS_NewObject(cx, NULL, NULL, NULL);
     204               0 :     JS::AutoObjectRooter rr(cx, result);
     205               0 :     if (!result) {
     206               0 :         return false;
     207                 :     }
     208                 : 
     209               0 :     if (!JS_DefineProperty(cx, result, "width", INT_TO_JSVAL(w), NULL, NULL,
     210               0 :                            JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT) ||
     211               0 :         !JS_DefineProperty(cx, result, "height", INT_TO_JSVAL(h), NULL, NULL,
     212               0 :                            JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT) ||
     213                 :         !JS_DefineProperty(cx, result, "data", OBJECT_TO_JSVAL(darray), NULL, NULL,
     214               0 :                            JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT)) {
     215               0 :         return false;
     216                 :     }
     217                 : 
     218               0 :     *vp = OBJECT_TO_JSVAL(result);
     219               0 :     return true;
     220                 : }
     221                 : 
     222                 : static bool
     223               0 : GetImageDataDimensions(JSContext *cx, JSObject *dataObject, uint32_t *width, uint32_t *height)
     224                 : {
     225                 :     jsval temp;
     226                 :     int32_t wi, hi;
     227                 :     
     228                 :     // Need to check that dataObject is ImageData object. That's hard for the moment 
     229                 :     // because they're just vanilla objects in our implementation.
     230                 :     // Let's guess, if the object has valid width and height then it's suitable
     231                 :     // for this operation.
     232               0 :     if (!JS_GetProperty(cx, dataObject, "width", &temp) ||
     233               0 :         !JS_ValueToECMAInt32(cx, temp, &wi))
     234               0 :         return false;
     235                 : 
     236               0 :     if (!JS_GetProperty(cx, dataObject, "height", &temp) ||
     237               0 :         !JS_ValueToECMAInt32(cx, temp, &hi))
     238               0 :         return false;
     239                 : 
     240               0 :     if (wi <= 0 || hi <= 0)
     241               0 :         return xpc_qsThrow(cx, NS_ERROR_DOM_INDEX_SIZE_ERR);
     242                 : 
     243               0 :     *width = uint32_t(wi);
     244               0 :     *height = uint32_t(hi);
     245               0 :     return true;
     246                 : }
     247                 : 
     248                 : static JSBool
     249               0 : nsIDOMCanvasRenderingContext2D_CreateImageData(JSContext *cx, unsigned argc, jsval *vp)
     250                 : {
     251               0 :     XPC_QS_ASSERT_CONTEXT_OK(cx);
     252                 : 
     253                 :     /* Note: this doesn't need JS_THIS_OBJECT */
     254                 : 
     255               0 :     if (argc < 1)
     256               0 :         return xpc_qsThrow(cx, NS_ERROR_XPC_NOT_ENOUGH_ARGS);
     257                 : 
     258               0 :     jsval *argv = JS_ARGV(cx, vp);
     259                 : 
     260               0 :     if (argc == 1) {
     261                 :         // The specification asks to throw NOT_SUPPORTED if first argument is NULL,
     262                 :         // An object is expected, so throw an exception for all primitives.
     263               0 :         if (JSVAL_IS_PRIMITIVE(argv[0]))
     264               0 :             return xpc_qsThrow(cx, NS_ERROR_DOM_NOT_SUPPORTED_ERR);
     265                 : 
     266               0 :         JSObject *dataObject = JSVAL_TO_OBJECT(argv[0]);
     267                 : 
     268                 :         uint32_t data_width, data_height;
     269               0 :         if (!GetImageDataDimensions(cx, dataObject, &data_width, &data_height))
     270               0 :             return false;
     271                 : 
     272               0 :         return CreateImageData(cx, data_width, data_height, NULL, 0, 0, vp);
     273                 :     }
     274                 : 
     275                 :     double width, height;
     276               0 :     if (!JS_ValueToNumber(cx, argv[0], &width) ||
     277               0 :         !JS_ValueToNumber(cx, argv[1], &height))
     278               0 :         return false;
     279                 : 
     280               0 :     if (!NS_finite(width) || !NS_finite(height))
     281               0 :         return xpc_qsThrow(cx, NS_ERROR_DOM_NOT_SUPPORTED_ERR);
     282                 : 
     283               0 :     if (!width || !height)
     284               0 :         return xpc_qsThrow(cx, NS_ERROR_DOM_INDEX_SIZE_ERR);
     285                 : 
     286               0 :     int32_t wi = JS_DoubleToInt32(width);
     287               0 :     int32_t hi = JS_DoubleToInt32(height);
     288                 : 
     289               0 :     uint32_t w = NS_ABS(wi);
     290               0 :     uint32_t h = NS_ABS(hi);
     291               0 :     return CreateImageData(cx, w, h, NULL, 0, 0, vp);
     292                 : }
     293                 : 
     294                 : static JSBool
     295               0 : nsIDOMCanvasRenderingContext2D_GetImageData(JSContext *cx, unsigned argc, jsval *vp)
     296                 : {
     297               0 :     XPC_QS_ASSERT_CONTEXT_OK(cx);
     298                 : 
     299               0 :     JSObject *obj = JS_THIS_OBJECT(cx, vp);
     300               0 :     if (!obj)
     301               0 :         return JS_FALSE;
     302                 : 
     303                 :     nsIDOMCanvasRenderingContext2D *self;
     304               0 :     xpc_qsSelfRef selfref;
     305               0 :     JS::AutoValueRooter tvr(cx);
     306               0 :     if (!xpc_qsUnwrapThis(cx, obj, nsnull, &self, &selfref.ptr, tvr.jsval_addr(), nsnull))
     307               0 :         return JS_FALSE;
     308                 : 
     309               0 :     if (argc < 4)
     310               0 :         return xpc_qsThrow(cx, NS_ERROR_XPC_NOT_ENOUGH_ARGS);
     311                 : 
     312               0 :     jsval *argv = JS_ARGV(cx, vp);
     313                 : 
     314                 :     double xd, yd, width, height;
     315               0 :     if (!JS_ValueToNumber(cx, argv[0], &xd) ||
     316               0 :         !JS_ValueToNumber(cx, argv[1], &yd) ||
     317               0 :         !JS_ValueToNumber(cx, argv[2], &width) ||
     318               0 :         !JS_ValueToNumber(cx, argv[3], &height))
     319               0 :         return false;
     320                 : 
     321               0 :     if (!NS_finite(xd) || !NS_finite(yd) ||
     322               0 :         !NS_finite(width) || !NS_finite(height))
     323               0 :         return xpc_qsThrow(cx, NS_ERROR_DOM_NOT_SUPPORTED_ERR);
     324                 : 
     325               0 :     if (!width || !height)
     326               0 :         return xpc_qsThrow(cx, NS_ERROR_DOM_INDEX_SIZE_ERR);
     327                 : 
     328               0 :     int32_t x = JS_DoubleToInt32(xd);
     329               0 :     int32_t y = JS_DoubleToInt32(yd);
     330               0 :     int32_t wi = JS_DoubleToInt32(width);
     331               0 :     int32_t hi = JS_DoubleToInt32(height);
     332                 : 
     333                 :     // Handle negative width and height by flipping the rectangle over in the
     334                 :     // relevant direction.
     335                 :     uint32_t w, h;
     336               0 :     if (width < 0) {
     337               0 :         w = -wi;
     338               0 :         x -= w;
     339                 :     } else {
     340               0 :         w = wi;
     341                 :     }
     342               0 :     if (height < 0) {
     343               0 :         h = -hi;
     344               0 :         y -= h;
     345                 :     } else {
     346               0 :         h = hi;
     347                 :     }
     348               0 :     return CreateImageData(cx, w, h, self, x, y, vp);
     349                 : }
     350                 : 
     351                 : static JSBool
     352               0 : nsIDOMCanvasRenderingContext2D_PutImageData(JSContext *cx, unsigned argc, jsval *vp)
     353                 : {
     354               0 :     XPC_QS_ASSERT_CONTEXT_OK(cx);
     355                 : 
     356               0 :     JSObject *obj = JS_THIS_OBJECT(cx, vp);
     357               0 :     if (!obj)
     358               0 :         return JS_FALSE;
     359                 : 
     360                 :     nsresult rv;
     361                 : 
     362                 :     nsIDOMCanvasRenderingContext2D *self;
     363               0 :     xpc_qsSelfRef selfref;
     364               0 :     JS::AutoValueRooter tvr(cx);
     365               0 :     if (!xpc_qsUnwrapThis(cx, obj, nsnull, &self, &selfref.ptr, tvr.jsval_addr(), nsnull))
     366               0 :         return JS_FALSE;
     367                 : 
     368               0 :     if (argc < 3)
     369               0 :         return xpc_qsThrow(cx, NS_ERROR_XPC_NOT_ENOUGH_ARGS);
     370                 : 
     371               0 :     jsval *argv = JS_ARGV(cx, vp);
     372                 : 
     373               0 :     if (JSVAL_IS_PRIMITIVE(argv[0]))
     374               0 :         return xpc_qsThrow(cx, NS_ERROR_DOM_TYPE_MISMATCH_ERR);
     375                 : 
     376               0 :     JSObject *dataObject = JSVAL_TO_OBJECT(argv[0]);
     377                 : 
     378                 :     double xd, yd;
     379               0 :     if (!JS_ValueToNumber(cx, argv[1], &xd) ||
     380               0 :         !JS_ValueToNumber(cx, argv[2], &yd)) {
     381               0 :         return false;
     382                 :     }
     383                 : 
     384               0 :     if (!NS_finite(xd) || !NS_finite(yd)) {
     385               0 :         return xpc_qsThrow(cx, NS_ERROR_DOM_NOT_SUPPORTED_ERR);
     386                 :     }
     387                 : 
     388               0 :     int32_t x = JS_DoubleToInt32(xd);
     389               0 :     int32_t y = JS_DoubleToInt32(yd);
     390                 : 
     391                 :     // Grab width, height, and the dense array from the dataObject.
     392               0 :     JS::AutoValueRooter tv(cx);
     393                 : 
     394                 :     uint32_t w, h;
     395               0 :     if (!GetImageDataDimensions(cx, dataObject, &w, &h))
     396               0 :         return JS_FALSE;
     397                 : 
     398                 :     // the optional dirty rect
     399               0 :     bool hasDirtyRect = false;
     400               0 :     int32_t dirtyX = 0,
     401               0 :             dirtyY = 0,
     402               0 :             dirtyWidth = w,
     403               0 :             dirtyHeight = h;
     404                 : 
     405               0 :     if (argc >= 7) {
     406                 :         double dx, dy, dw, dh;
     407               0 :         if (!JS_ValueToNumber(cx, argv[3], &dx) ||
     408               0 :             !JS_ValueToNumber(cx, argv[4], &dy) ||
     409               0 :             !JS_ValueToNumber(cx, argv[5], &dw) ||
     410               0 :             !JS_ValueToNumber(cx, argv[6], &dh)) {
     411               0 :             return false;
     412                 :         }
     413                 : 
     414               0 :         if (!NS_finite(dx) || !NS_finite(dy) ||
     415               0 :             !NS_finite(dw) || !NS_finite(dh)) {
     416               0 :             return xpc_qsThrow(cx, NS_ERROR_DOM_NOT_SUPPORTED_ERR);
     417                 :         }
     418                 : 
     419               0 :         dirtyX = JS_DoubleToInt32(dx);
     420               0 :         dirtyY = JS_DoubleToInt32(dy);
     421               0 :         dirtyWidth = JS_DoubleToInt32(dw);
     422               0 :         dirtyHeight = JS_DoubleToInt32(dh);
     423                 : 
     424               0 :         hasDirtyRect = true;
     425                 :     }
     426                 : 
     427               0 :     if (!JS_GetProperty(cx, dataObject, "data", tv.jsval_addr()))
     428               0 :         return JS_FALSE;
     429                 : 
     430               0 :     if (JSVAL_IS_PRIMITIVE(tv.jsval_value()))
     431               0 :         return xpc_qsThrow(cx, NS_ERROR_DOM_TYPE_MISMATCH_ERR);
     432                 : 
     433               0 :     JSObject *darray = JSVAL_TO_OBJECT(tv.jsval_value());
     434                 : 
     435               0 :     JS::AutoValueRooter tsrc_tvr(cx);
     436                 : 
     437               0 :     JSObject *tsrc = NULL;
     438               0 :     if (js::GetObjectClass(darray) == &js::TypedArray::fastClasses[js::TypedArray::TYPE_UINT8] ||
     439               0 :         js::GetObjectClass(darray) == &js::TypedArray::fastClasses[js::TypedArray::TYPE_UINT8_CLAMPED])
     440                 :     {
     441               0 :         tsrc = js::TypedArray::getTypedArray(darray);
     442               0 :     } else if (JS_IsArrayObject(cx, darray) || js_IsTypedArray(darray)) {
     443                 :         // ugh, this isn't a uint8 typed array, someone made their own object; convert it to a typed array
     444               0 :         JSObject *nobj = js_CreateTypedArrayWithArray(cx, js::TypedArray::TYPE_UINT8, darray);
     445               0 :         if (!nobj)
     446               0 :             return JS_FALSE;
     447                 : 
     448               0 :         *tsrc_tvr.jsval_addr() = OBJECT_TO_JSVAL(nobj);
     449               0 :         tsrc = js::TypedArray::getTypedArray(nobj);
     450                 :     } else {
     451                 :         // yeah, no.
     452               0 :         return xpc_qsThrow(cx, NS_ERROR_DOM_TYPE_MISMATCH_ERR);
     453                 :     }
     454                 : 
     455                 :     // make the call
     456               0 :     rv = self->PutImageData_explicit(x, y, w, h, static_cast<PRUint8*>(JS_GetTypedArrayData(tsrc)), JS_GetTypedArrayByteLength(tsrc), hasDirtyRect, dirtyX, dirtyY, dirtyWidth, dirtyHeight);
     457               0 :     if (NS_FAILED(rv))
     458               0 :         return xpc_qsThrowMethodFailed(cx, rv, vp);
     459                 : 
     460               0 :     *vp = JSVAL_VOID;
     461               0 :     return JS_TRUE;
     462                 : }

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