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      1 /* libs/android_runtime/android/graphics/Path.cpp
      2 **
      3 ** Copyright 2006, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 // This file was generated from the C++ include file: SkPath.h
     19 // Any changes made to this file will be discarded by the build.
     20 // To change this file, either edit the include, or device/tools/gluemaker/main.cpp,
     21 // or one of the auxilary file specifications in device/tools/gluemaker.
     22 
     23 #include "jni.h"
     24 #include "GraphicsJNI.h"
     25 #include <android_runtime/AndroidRuntime.h>
     26 
     27 #include "SkPath.h"
     28 #include "SkPathOps.h"
     29 
     30 #include <Caches.h>
     31 #include <vector>
     32 #include <map>
     33 
     34 namespace android {
     35 
     36 class SkPathGlue {
     37 public:
     38 
     39     static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
     40         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     41 #ifdef USE_OPENGL_RENDERER
     42         if (android::uirenderer::Caches::hasInstance()) {
     43             android::uirenderer::Caches::getInstance().resourceCache.destructor(obj);
     44             return;
     45         }
     46 #endif
     47         delete obj;
     48     }
     49 
     50     static jlong init1(JNIEnv* env, jobject clazz) {
     51         return reinterpret_cast<jlong>(new SkPath());
     52     }
     53 
     54     static jlong init2(JNIEnv* env, jobject clazz, jlong valHandle) {
     55         SkPath* val = reinterpret_cast<SkPath*>(valHandle);
     56         return reinterpret_cast<jlong>(new SkPath(*val));
     57     }
     58 
     59     static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
     60         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     61         obj->reset();
     62     }
     63 
     64     static void rewind(JNIEnv* env, jobject clazz, jlong objHandle) {
     65         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     66         obj->rewind();
     67     }
     68 
     69     static void assign(JNIEnv* env, jobject clazz, jlong dstHandle, jlong srcHandle) {
     70         SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
     71         const SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
     72         *dst = *src;
     73     }
     74 
     75     static jboolean isConvex(JNIEnv* env, jobject clazz, jlong objHandle) {
     76         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     77         return obj->isConvex();
     78     }
     79 
     80     static jint getFillType(JNIEnv* env, jobject clazz, jlong objHandle) {
     81         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     82         return obj->getFillType();
     83     }
     84 
     85     static void setFillType(JNIEnv* env, jobject clazz, jlong pathHandle, jint ftHandle) {
     86         SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
     87         SkPath::FillType ft = static_cast<SkPath::FillType>(ftHandle);
     88         path->setFillType(ft);
     89     }
     90 
     91     static jboolean isEmpty(JNIEnv* env, jobject clazz, jlong objHandle) {
     92         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     93         return obj->isEmpty();
     94     }
     95 
     96     static jboolean isRect(JNIEnv* env, jobject clazz, jlong objHandle, jobject jrect) {
     97         SkRect rect;
     98         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     99         jboolean result = obj->isRect(&rect);
    100         GraphicsJNI::rect_to_jrectf(rect, env, jrect);
    101         return result;
    102     }
    103 
    104     static void computeBounds(JNIEnv* env, jobject clazz, jlong objHandle, jobject jbounds) {
    105         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    106         const SkRect& bounds = obj->getBounds();
    107         GraphicsJNI::rect_to_jrectf(bounds, env, jbounds);
    108     }
    109 
    110     static void incReserve(JNIEnv* env, jobject clazz, jlong objHandle, jint extraPtCount) {
    111         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    112         obj->incReserve(extraPtCount);
    113     }
    114 
    115     static void moveTo__FF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat x, jfloat y) {
    116         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    117         obj->moveTo(x, y);
    118     }
    119 
    120     static void rMoveTo(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
    121         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    122         obj->rMoveTo(dx, dy);
    123     }
    124 
    125     static void lineTo__FF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat x, jfloat y) {
    126         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    127         obj->lineTo(x, y);
    128     }
    129 
    130     static void rLineTo(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
    131         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    132         obj->rLineTo(dx, dy);
    133     }
    134 
    135     static void quadTo__FFFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat x1, jfloat y1, jfloat x2, jfloat y2) {
    136         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    137         obj->quadTo(x1, y1, x2, y2);
    138     }
    139 
    140     static void rQuadTo(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx1, jfloat dy1, jfloat dx2, jfloat dy2) {
    141         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    142         obj->rQuadTo(dx1, dy1, dx2, dy2);
    143     }
    144 
    145     static void cubicTo__FFFFFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat x1, jfloat y1, jfloat x2, jfloat y2, jfloat x3, jfloat y3) {
    146         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    147         obj->cubicTo(x1, y1, x2, y2, x3, y3);
    148     }
    149 
    150     static void rCubicTo(JNIEnv* env, jobject clazz, jlong objHandle, jfloat x1, jfloat y1, jfloat x2, jfloat y2, jfloat x3, jfloat y3) {
    151         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    152         obj->rCubicTo(x1, y1, x2, y2, x3, y3);
    153     }
    154 
    155     static void arcTo(JNIEnv* env, jobject clazz, jlong objHandle, jfloat left, jfloat top,
    156             jfloat right, jfloat bottom, jfloat startAngle, jfloat sweepAngle,
    157             jboolean forceMoveTo) {
    158         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    159         SkRect oval = SkRect::MakeLTRB(left, top, right, bottom);
    160         obj->arcTo(oval, startAngle, sweepAngle, forceMoveTo);
    161     }
    162 
    163     static void close(JNIEnv* env, jobject clazz, jlong objHandle) {
    164         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    165         obj->close();
    166     }
    167 
    168     static void addRect(JNIEnv* env, jobject clazz, jlong objHandle,
    169             jfloat left, jfloat top, jfloat right, jfloat bottom, jint dirHandle) {
    170         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    171         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    172         obj->addRect(left, top, right, bottom, dir);
    173     }
    174 
    175     static void addOval(JNIEnv* env, jobject clazz, jlong objHandle,
    176             jfloat left, jfloat top, jfloat right, jfloat bottom, jint dirHandle) {
    177         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    178         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    179         SkRect oval = SkRect::MakeLTRB(left, top, right, bottom);
    180         obj->addOval(oval, dir);
    181     }
    182 
    183     static void addCircle(JNIEnv* env, jobject clazz, jlong objHandle, jfloat x, jfloat y, jfloat radius, jint dirHandle) {
    184         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    185         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    186         obj->addCircle(x, y, radius, dir);
    187     }
    188 
    189     static void addArc(JNIEnv* env, jobject clazz, jlong objHandle, jfloat left, jfloat top,
    190             jfloat right, jfloat bottom, jfloat startAngle, jfloat sweepAngle) {
    191         SkRect oval = SkRect::MakeLTRB(left, top, right, bottom);
    192         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    193         obj->addArc(oval, startAngle, sweepAngle);
    194     }
    195 
    196     static void addRoundRectXY(JNIEnv* env, jobject clazz, jlong objHandle, jfloat left, jfloat top,
    197             jfloat right, jfloat bottom, jfloat rx, jfloat ry, jint dirHandle) {
    198         SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
    199         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    200         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    201         obj->addRoundRect(rect, rx, ry, dir);
    202     }
    203 
    204     static void addRoundRect8(JNIEnv* env, jobject, jlong objHandle, jfloat left, jfloat top,
    205             jfloat right, jfloat bottom, jfloatArray array, jint dirHandle) {
    206         SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
    207         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    208         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    209         AutoJavaFloatArray  afa(env, array, 8);
    210 #ifdef SK_SCALAR_IS_FLOAT
    211         const float* src = afa.ptr();
    212 #else
    213         #error Need to convert float array to SkScalar array before calling the following function.
    214 #endif
    215         obj->addRoundRect(rect, src, dir);
    216     }
    217 
    218     static void addPath__PathFF(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jfloat dx, jfloat dy) {
    219         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    220         SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
    221         obj->addPath(*src, dx, dy);
    222     }
    223 
    224     static void addPath__Path(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle) {
    225         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    226         SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
    227         obj->addPath(*src);
    228     }
    229 
    230     static void addPath__PathMatrix(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong matrixHandle) {
    231         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    232         SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
    233         SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
    234         obj->addPath(*src, *matrix);
    235     }
    236 
    237     static void offset__FFPath(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy, jlong dstHandle) {
    238         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    239         SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
    240         obj->offset(dx, dy, dst);
    241     }
    242 
    243     static void offset__FF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
    244         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    245         obj->offset(dx, dy);
    246     }
    247 
    248     static void setLastPoint(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
    249         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    250         obj->setLastPt(dx, dy);
    251     }
    252 
    253     static void transform__MatrixPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong matrixHandle, jlong dstHandle) {
    254         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    255         SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
    256         SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
    257         obj->transform(*matrix, dst);
    258     }
    259 
    260     static void transform__Matrix(JNIEnv* env, jobject clazz, jlong objHandle, jlong matrixHandle) {
    261         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    262         SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
    263         obj->transform(*matrix);
    264     }
    265 
    266     static jboolean op(JNIEnv* env, jobject clazz, jlong p1Handle, jlong p2Handle, jint opHandle, jlong rHandle) {
    267         SkPath* p1  = reinterpret_cast<SkPath*>(p1Handle);
    268         SkPath* p2  = reinterpret_cast<SkPath*>(p2Handle);
    269         SkPathOp op = static_cast<SkPathOp>(opHandle);
    270         SkPath* r   = reinterpret_cast<SkPath*>(rHandle);
    271         return Op(*p1, *p2, op, r);
    272      }
    273 
    274     typedef SkPoint (*bezierCalculation)(float t, const SkPoint* points);
    275 
    276     static void addMove(std::vector<SkPoint>& segmentPoints, std::vector<float>& lengths,
    277             const SkPoint& point) {
    278         float length = 0;
    279         if (!lengths.empty()) {
    280             length = lengths.back();
    281         }
    282         segmentPoints.push_back(point);
    283         lengths.push_back(length);
    284     }
    285 
    286     static void addLine(std::vector<SkPoint>& segmentPoints, std::vector<float>& lengths,
    287             const SkPoint& toPoint) {
    288         if (segmentPoints.empty()) {
    289             segmentPoints.push_back(SkPoint::Make(0, 0));
    290             lengths.push_back(0);
    291         } else if (segmentPoints.back() == toPoint) {
    292             return; // Empty line
    293         }
    294         float length = lengths.back() + SkPoint::Distance(segmentPoints.back(), toPoint);
    295         segmentPoints.push_back(toPoint);
    296         lengths.push_back(length);
    297     }
    298 
    299     static float cubicCoordinateCalculation(float t, float p0, float p1, float p2, float p3) {
    300         float oneMinusT = 1 - t;
    301         float oneMinusTSquared = oneMinusT * oneMinusT;
    302         float oneMinusTCubed = oneMinusTSquared * oneMinusT;
    303         float tSquared = t * t;
    304         float tCubed = tSquared * t;
    305         return (oneMinusTCubed * p0) + (3 * oneMinusTSquared * t * p1)
    306                 + (3 * oneMinusT * tSquared * p2) + (tCubed * p3);
    307     }
    308 
    309     static SkPoint cubicBezierCalculation(float t, const SkPoint* points) {
    310         float x = cubicCoordinateCalculation(t, points[0].x(), points[1].x(),
    311             points[2].x(), points[3].x());
    312         float y = cubicCoordinateCalculation(t, points[0].y(), points[1].y(),
    313             points[2].y(), points[3].y());
    314         return SkPoint::Make(x, y);
    315     }
    316 
    317     static float quadraticCoordinateCalculation(float t, float p0, float p1, float p2) {
    318         float oneMinusT = 1 - t;
    319         return oneMinusT * ((oneMinusT * p0) + (t * p1)) + t * ((oneMinusT * p1) + (t * p2));
    320     }
    321 
    322     static SkPoint quadraticBezierCalculation(float t, const SkPoint* points) {
    323         float x = quadraticCoordinateCalculation(t, points[0].x(), points[1].x(), points[2].x());
    324         float y = quadraticCoordinateCalculation(t, points[0].y(), points[1].y(), points[2].y());
    325         return SkPoint::Make(x, y);
    326     }
    327 
    328     // Subdivide a section of the Bezier curve, set the mid-point and the mid-t value.
    329     // Returns true if further subdivision is necessary as defined by errorSquared.
    330     static bool subdividePoints(const SkPoint* points, bezierCalculation bezierFunction,
    331             float t0, const SkPoint &p0, float t1, const SkPoint &p1,
    332             float& midT, SkPoint &midPoint, float errorSquared) {
    333         midT = (t1 + t0) / 2;
    334         float midX = (p1.x() + p0.x()) / 2;
    335         float midY = (p1.y() + p0.y()) / 2;
    336 
    337         midPoint = (*bezierFunction)(midT, points);
    338         float xError = midPoint.x() - midX;
    339         float yError = midPoint.y() - midY;
    340         float midErrorSquared = (xError * xError) + (yError * yError);
    341         return midErrorSquared > errorSquared;
    342     }
    343 
    344     // Divides Bezier curves until linear interpolation is very close to accurate, using
    345     // errorSquared as a metric. Cubic Bezier curves can have an inflection point that improperly
    346     // short-circuit subdivision. If you imagine an S shape, the top and bottom points being the
    347     // starting and end points, linear interpolation would mark the center where the curve places
    348     // the point. It is clearly not the case that we can linearly interpolate at that point.
    349     // doubleCheckDivision forces a second examination between subdivisions to ensure that linear
    350     // interpolation works.
    351     static void addBezier(const SkPoint* points,
    352             bezierCalculation bezierFunction, std::vector<SkPoint>& segmentPoints,
    353             std::vector<float>& lengths, float errorSquared, bool doubleCheckDivision) {
    354         typedef std::map<float, SkPoint> PointMap;
    355         PointMap tToPoint;
    356 
    357         tToPoint[0] = (*bezierFunction)(0, points);
    358         tToPoint[1] = (*bezierFunction)(1, points);
    359 
    360         PointMap::iterator iter = tToPoint.begin();
    361         PointMap::iterator next = iter;
    362         ++next;
    363         while (next != tToPoint.end()) {
    364             bool needsSubdivision = true;
    365             SkPoint midPoint;
    366             do {
    367                 float midT;
    368                 needsSubdivision = subdividePoints(points, bezierFunction, iter->first,
    369                     iter->second, next->first, next->second, midT, midPoint, errorSquared);
    370                 if (!needsSubdivision && doubleCheckDivision) {
    371                     SkPoint quarterPoint;
    372                     float quarterT;
    373                     needsSubdivision = subdividePoints(points, bezierFunction, iter->first,
    374                         iter->second, midT, midPoint, quarterT, quarterPoint, errorSquared);
    375                     if (needsSubdivision) {
    376                         // Found an inflection point. No need to double-check.
    377                         doubleCheckDivision = false;
    378                     }
    379                 }
    380                 if (needsSubdivision) {
    381                     next = tToPoint.insert(iter, PointMap::value_type(midT, midPoint));
    382                 }
    383             } while (needsSubdivision);
    384             iter = next;
    385             next++;
    386         }
    387 
    388         // Now that each division can use linear interpolation with less than the allowed error
    389         for (iter = tToPoint.begin(); iter != tToPoint.end(); ++iter) {
    390             addLine(segmentPoints, lengths, iter->second);
    391         }
    392     }
    393 
    394     static void createVerbSegments(SkPath::Verb verb, const SkPoint* points,
    395         std::vector<SkPoint>& segmentPoints, std::vector<float>& lengths, float errorSquared) {
    396         switch (verb) {
    397             case SkPath::kMove_Verb:
    398                 addMove(segmentPoints, lengths, points[0]);
    399                 break;
    400             case SkPath::kClose_Verb:
    401                 addLine(segmentPoints, lengths, points[0]);
    402                 break;
    403             case SkPath::kLine_Verb:
    404                 addLine(segmentPoints, lengths, points[1]);
    405                 break;
    406             case SkPath::kQuad_Verb:
    407                 addBezier(points, quadraticBezierCalculation, segmentPoints, lengths,
    408                     errorSquared, false);
    409                 break;
    410             case SkPath::kCubic_Verb:
    411                 addBezier(points, cubicBezierCalculation, segmentPoints, lengths,
    412                     errorSquared, true);
    413                 break;
    414             default:
    415                 // Leave element as NULL, Conic sections are not supported.
    416                 break;
    417         }
    418     }
    419 
    420     // Returns a float[] with each point along the path represented by 3 floats
    421     // * fractional length along the path that the point resides
    422     // * x coordinate
    423     // * y coordinate
    424     // Note that more than one point may have the same length along the path in
    425     // the case of a move.
    426     // NULL can be returned if the Path is empty.
    427     static jfloatArray approximate(JNIEnv* env, jclass, jlong pathHandle, float acceptableError)
    428     {
    429         SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
    430         SkASSERT(path);
    431         SkPath::Iter pathIter(*path, false);
    432         SkPath::Verb verb;
    433         SkPoint points[4];
    434         std::vector<SkPoint> segmentPoints;
    435         std::vector<float> lengths;
    436         float errorSquared = acceptableError * acceptableError;
    437 
    438         while ((verb = pathIter.next(points, false)) != SkPath::kDone_Verb) {
    439             createVerbSegments(verb, points, segmentPoints, lengths, errorSquared);
    440         }
    441 
    442         if (segmentPoints.empty()) {
    443             int numVerbs = path->countVerbs();
    444             if (numVerbs == 1) {
    445                 addMove(segmentPoints, lengths, path->getPoint(0));
    446             } else {
    447                 // Invalid or empty path. Fall back to point(0,0)
    448                 addMove(segmentPoints, lengths, SkPoint());
    449             }
    450         }
    451 
    452         float totalLength = lengths.back();
    453         if (totalLength == 0) {
    454             // Lone Move instructions should still be able to animate at the same value.
    455             segmentPoints.push_back(segmentPoints.back());
    456             lengths.push_back(1);
    457             totalLength = 1;
    458         }
    459 
    460         size_t numPoints = segmentPoints.size();
    461         size_t approximationArraySize = numPoints * 3;
    462 
    463         float* approximation = new float[approximationArraySize];
    464 
    465         int approximationIndex = 0;
    466         for (size_t i = 0; i < numPoints; i++) {
    467             const SkPoint& point = segmentPoints[i];
    468             approximation[approximationIndex++] = lengths[i] / totalLength;
    469             approximation[approximationIndex++] = point.x();
    470             approximation[approximationIndex++] = point.y();
    471         }
    472 
    473         jfloatArray result = env->NewFloatArray(approximationArraySize);
    474         env->SetFloatArrayRegion(result, 0, approximationArraySize, approximation);
    475         delete[] approximation;
    476         return result;
    477     }
    478 };
    479 
    480 static JNINativeMethod methods[] = {
    481     {"finalizer", "(J)V", (void*) SkPathGlue::finalizer},
    482     {"init1","()J", (void*) SkPathGlue::init1},
    483     {"init2","(J)J", (void*) SkPathGlue::init2},
    484     {"native_reset","(J)V", (void*) SkPathGlue::reset},
    485     {"native_rewind","(J)V", (void*) SkPathGlue::rewind},
    486     {"native_set","(JJ)V", (void*) SkPathGlue::assign},
    487     {"native_isConvex","(J)Z", (void*) SkPathGlue::isConvex},
    488     {"native_getFillType","(J)I", (void*) SkPathGlue::getFillType},
    489     {"native_setFillType","(JI)V", (void*) SkPathGlue::setFillType},
    490     {"native_isEmpty","(J)Z", (void*) SkPathGlue::isEmpty},
    491     {"native_isRect","(JLandroid/graphics/RectF;)Z", (void*) SkPathGlue::isRect},
    492     {"native_computeBounds","(JLandroid/graphics/RectF;)V", (void*) SkPathGlue::computeBounds},
    493     {"native_incReserve","(JI)V", (void*) SkPathGlue::incReserve},
    494     {"native_moveTo","(JFF)V", (void*) SkPathGlue::moveTo__FF},
    495     {"native_rMoveTo","(JFF)V", (void*) SkPathGlue::rMoveTo},
    496     {"native_lineTo","(JFF)V", (void*) SkPathGlue::lineTo__FF},
    497     {"native_rLineTo","(JFF)V", (void*) SkPathGlue::rLineTo},
    498     {"native_quadTo","(JFFFF)V", (void*) SkPathGlue::quadTo__FFFF},
    499     {"native_rQuadTo","(JFFFF)V", (void*) SkPathGlue::rQuadTo},
    500     {"native_cubicTo","(JFFFFFF)V", (void*) SkPathGlue::cubicTo__FFFFFF},
    501     {"native_rCubicTo","(JFFFFFF)V", (void*) SkPathGlue::rCubicTo},
    502     {"native_arcTo","(JFFFFFFZ)V", (void*) SkPathGlue::arcTo},
    503     {"native_close","(J)V", (void*) SkPathGlue::close},
    504     {"native_addRect","(JFFFFI)V", (void*) SkPathGlue::addRect},
    505     {"native_addOval","(JFFFFI)V", (void*) SkPathGlue::addOval},
    506     {"native_addCircle","(JFFFI)V", (void*) SkPathGlue::addCircle},
    507     {"native_addArc","(JFFFFFF)V", (void*) SkPathGlue::addArc},
    508     {"native_addRoundRect","(JFFFFFFI)V", (void*) SkPathGlue::addRoundRectXY},
    509     {"native_addRoundRect","(JFFFF[FI)V", (void*) SkPathGlue::addRoundRect8},
    510     {"native_addPath","(JJFF)V", (void*) SkPathGlue::addPath__PathFF},
    511     {"native_addPath","(JJ)V", (void*) SkPathGlue::addPath__Path},
    512     {"native_addPath","(JJJ)V", (void*) SkPathGlue::addPath__PathMatrix},
    513     {"native_offset","(JFFJ)V", (void*) SkPathGlue::offset__FFPath},
    514     {"native_offset","(JFF)V", (void*) SkPathGlue::offset__FF},
    515     {"native_setLastPoint","(JFF)V", (void*) SkPathGlue::setLastPoint},
    516     {"native_transform","(JJJ)V", (void*) SkPathGlue::transform__MatrixPath},
    517     {"native_transform","(JJ)V", (void*) SkPathGlue::transform__Matrix},
    518     {"native_op","(JJIJ)Z", (void*) SkPathGlue::op},
    519     {"native_approximate", "(JF)[F", (void*) SkPathGlue::approximate},
    520 };
    521 
    522 int register_android_graphics_Path(JNIEnv* env) {
    523     int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Path", methods,
    524         sizeof(methods) / sizeof(methods[0]));
    525     return result;
    526 }
    527 
    528 }
    529