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