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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 #include "SkGeometry.h" // WARNING: Internal Skia Header
     30 
     31 #include <Caches.h>
     32 #include <vector>
     33 #include <map>
     34 
     35 namespace android {
     36 
     37 class SkPathGlue {
     38 public:
     39 
     40     // ---------------- Regular JNI -----------------------------
     41 
     42     static jlong init(JNIEnv* env, jclass clazz) {
     43         return reinterpret_cast<jlong>(new SkPath());
     44     }
     45 
     46     static jlong init_Path(JNIEnv* env, jclass clazz, jlong valHandle) {
     47         SkPath* val = reinterpret_cast<SkPath*>(valHandle);
     48         return reinterpret_cast<jlong>(new SkPath(*val));
     49     }
     50 
     51     static void finalize(JNIEnv* env, jclass clazz, jlong objHandle) {
     52         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     53         // Purge entries from the HWUI path cache if this path's data is unique
     54         if (obj->unique() && android::uirenderer::Caches::hasInstance()) {
     55             android::uirenderer::Caches::getInstance().pathCache.removeDeferred(obj);
     56         }
     57         delete obj;
     58     }
     59 
     60     static void set(JNIEnv* env, jclass clazz, jlong dstHandle, jlong srcHandle) {
     61         SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
     62         const SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
     63         *dst = *src;
     64     }
     65 
     66     static void computeBounds(JNIEnv* env, jclass clazz, jlong objHandle, jobject jbounds) {
     67         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     68         const SkRect& bounds = obj->getBounds();
     69         GraphicsJNI::rect_to_jrectf(bounds, env, jbounds);
     70     }
     71 
     72     static void incReserve(JNIEnv* env, jclass clazz, jlong objHandle, jint extraPtCount) {
     73         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     74         obj->incReserve(extraPtCount);
     75     }
     76 
     77     static void moveTo__FF(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x, jfloat y) {
     78         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     79         obj->moveTo(x, y);
     80     }
     81 
     82     static void rMoveTo(JNIEnv* env, jclass clazz, jlong objHandle, jfloat dx, jfloat dy) {
     83         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     84         obj->rMoveTo(dx, dy);
     85     }
     86 
     87     static void lineTo__FF(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x, jfloat y) {
     88         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     89         obj->lineTo(x, y);
     90     }
     91 
     92     static void rLineTo(JNIEnv* env, jclass clazz, jlong objHandle, jfloat dx, jfloat dy) {
     93         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     94         obj->rLineTo(dx, dy);
     95     }
     96 
     97     static void quadTo__FFFF(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x1, jfloat y1,
     98             jfloat x2, jfloat y2) {
     99         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    100         obj->quadTo(x1, y1, x2, y2);
    101     }
    102 
    103     static void rQuadTo(JNIEnv* env, jclass clazz, jlong objHandle, jfloat dx1, jfloat dy1,
    104             jfloat dx2, jfloat dy2) {
    105         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    106         obj->rQuadTo(dx1, dy1, dx2, dy2);
    107     }
    108 
    109     static void cubicTo__FFFFFF(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x1, jfloat y1,
    110             jfloat x2, jfloat y2, jfloat x3, jfloat y3) {
    111         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    112         obj->cubicTo(x1, y1, x2, y2, x3, y3);
    113     }
    114 
    115     static void rCubicTo(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x1, jfloat y1,
    116             jfloat x2, jfloat y2, jfloat x3, jfloat y3) {
    117         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    118         obj->rCubicTo(x1, y1, x2, y2, x3, y3);
    119     }
    120 
    121     static void arcTo(JNIEnv* env, jclass clazz, jlong objHandle, jfloat left, jfloat top,
    122             jfloat right, jfloat bottom, jfloat startAngle, jfloat sweepAngle,
    123             jboolean forceMoveTo) {
    124         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    125         SkRect oval = SkRect::MakeLTRB(left, top, right, bottom);
    126         obj->arcTo(oval, startAngle, sweepAngle, forceMoveTo);
    127     }
    128 
    129     static void close(JNIEnv* env, jclass clazz, jlong objHandle) {
    130         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    131         obj->close();
    132     }
    133 
    134     static void addRect(JNIEnv* env, jclass clazz, jlong objHandle,
    135             jfloat left, jfloat top, jfloat right, jfloat bottom, jint dirHandle) {
    136         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    137         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    138         obj->addRect(left, top, right, bottom, dir);
    139     }
    140 
    141     static void addOval(JNIEnv* env, jclass clazz, jlong objHandle,
    142             jfloat left, jfloat top, jfloat right, jfloat bottom, jint dirHandle) {
    143         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    144         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    145         SkRect oval = SkRect::MakeLTRB(left, top, right, bottom);
    146         obj->addOval(oval, dir);
    147     }
    148 
    149     static void addCircle(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x, jfloat y,
    150             jfloat radius, jint dirHandle) {
    151         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    152         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    153         obj->addCircle(x, y, radius, dir);
    154     }
    155 
    156     static void addArc(JNIEnv* env, jclass clazz, jlong objHandle, jfloat left, jfloat top,
    157             jfloat right, jfloat bottom, jfloat startAngle, jfloat sweepAngle) {
    158         SkRect oval = SkRect::MakeLTRB(left, top, right, bottom);
    159         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    160         obj->addArc(oval, startAngle, sweepAngle);
    161     }
    162 
    163     static void addRoundRectXY(JNIEnv* env, jclass clazz, jlong objHandle, jfloat left, jfloat top,
    164             jfloat right, jfloat bottom, jfloat rx, jfloat ry, jint dirHandle) {
    165         SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
    166         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    167         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    168         obj->addRoundRect(rect, rx, ry, dir);
    169     }
    170 
    171     static void addRoundRect8(JNIEnv* env, jclass clazz, jlong objHandle, jfloat left, jfloat top,
    172                 jfloat right, jfloat bottom, jfloatArray array, jint dirHandle) {
    173         SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
    174         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    175         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    176         AutoJavaFloatArray  afa(env, array, 8);
    177 #ifdef SK_SCALAR_IS_FLOAT
    178         const float* src = afa.ptr();
    179 #else
    180         #error Need to convert float array to SkScalar array before calling the following function.
    181 #endif
    182         obj->addRoundRect(rect, src, dir);
    183     }
    184 
    185     static void addPath__PathFF(JNIEnv* env, jclass clazz, jlong objHandle, jlong srcHandle,
    186             jfloat dx, jfloat dy) {
    187         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    188         SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
    189         obj->addPath(*src, dx, dy);
    190     }
    191 
    192     static void addPath__Path(JNIEnv* env, jclass clazz, jlong objHandle, jlong srcHandle) {
    193         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    194         SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
    195         obj->addPath(*src);
    196     }
    197 
    198     static void addPath__PathMatrix(JNIEnv* env, jclass clazz, jlong objHandle, jlong srcHandle,
    199             jlong matrixHandle) {
    200         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    201         SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
    202         SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
    203         obj->addPath(*src, *matrix);
    204     }
    205 
    206     static void offset__FF(JNIEnv* env, jclass clazz, jlong objHandle, jfloat dx, jfloat dy) {
    207         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    208         obj->offset(dx, dy);
    209     }
    210 
    211     static void setLastPoint(JNIEnv* env, jclass clazz, jlong objHandle, jfloat dx, jfloat dy) {
    212         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    213         obj->setLastPt(dx, dy);
    214     }
    215 
    216     static void transform__MatrixPath(JNIEnv* env, jclass clazz, jlong objHandle, jlong matrixHandle,
    217             jlong dstHandle) {
    218         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    219         SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
    220         SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
    221         obj->transform(*matrix, dst);
    222     }
    223 
    224     static void transform__Matrix(JNIEnv* env, jclass clazz, jlong objHandle, jlong matrixHandle) {
    225         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    226         SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
    227         obj->transform(*matrix);
    228     }
    229 
    230     static jboolean op(JNIEnv* env, jclass clazz, jlong p1Handle, jlong p2Handle, jint opHandle,
    231             jlong rHandle) {
    232         SkPath* p1  = reinterpret_cast<SkPath*>(p1Handle);
    233         SkPath* p2  = reinterpret_cast<SkPath*>(p2Handle);
    234         SkPathOp op = static_cast<SkPathOp>(opHandle);
    235         SkPath* r   = reinterpret_cast<SkPath*>(rHandle);
    236         return Op(*p1, *p2, op, r);
    237      }
    238 
    239     typedef SkPoint (*bezierCalculation)(float t, const SkPoint* points);
    240 
    241     static void addMove(std::vector<SkPoint>& segmentPoints, std::vector<float>& lengths,
    242             const SkPoint& point) {
    243         float length = 0;
    244         if (!lengths.empty()) {
    245             length = lengths.back();
    246         }
    247         segmentPoints.push_back(point);
    248         lengths.push_back(length);
    249     }
    250 
    251     static void addLine(std::vector<SkPoint>& segmentPoints, std::vector<float>& lengths,
    252             const SkPoint& toPoint) {
    253         if (segmentPoints.empty()) {
    254             segmentPoints.push_back(SkPoint::Make(0, 0));
    255             lengths.push_back(0);
    256         } else if (segmentPoints.back() == toPoint) {
    257             return; // Empty line
    258         }
    259         float length = lengths.back() + SkPoint::Distance(segmentPoints.back(), toPoint);
    260         segmentPoints.push_back(toPoint);
    261         lengths.push_back(length);
    262     }
    263 
    264     static float cubicCoordinateCalculation(float t, float p0, float p1, float p2, float p3) {
    265         float oneMinusT = 1 - t;
    266         float oneMinusTSquared = oneMinusT * oneMinusT;
    267         float oneMinusTCubed = oneMinusTSquared * oneMinusT;
    268         float tSquared = t * t;
    269         float tCubed = tSquared * t;
    270         return (oneMinusTCubed * p0) + (3 * oneMinusTSquared * t * p1)
    271                 + (3 * oneMinusT * tSquared * p2) + (tCubed * p3);
    272     }
    273 
    274     static SkPoint cubicBezierCalculation(float t, const SkPoint* points) {
    275         float x = cubicCoordinateCalculation(t, points[0].x(), points[1].x(),
    276             points[2].x(), points[3].x());
    277         float y = cubicCoordinateCalculation(t, points[0].y(), points[1].y(),
    278             points[2].y(), points[3].y());
    279         return SkPoint::Make(x, y);
    280     }
    281 
    282     static float quadraticCoordinateCalculation(float t, float p0, float p1, float p2) {
    283         float oneMinusT = 1 - t;
    284         return oneMinusT * ((oneMinusT * p0) + (t * p1)) + t * ((oneMinusT * p1) + (t * p2));
    285     }
    286 
    287     static SkPoint quadraticBezierCalculation(float t, const SkPoint* points) {
    288         float x = quadraticCoordinateCalculation(t, points[0].x(), points[1].x(), points[2].x());
    289         float y = quadraticCoordinateCalculation(t, points[0].y(), points[1].y(), points[2].y());
    290         return SkPoint::Make(x, y);
    291     }
    292 
    293     // Subdivide a section of the Bezier curve, set the mid-point and the mid-t value.
    294     // Returns true if further subdivision is necessary as defined by errorSquared.
    295     static bool subdividePoints(const SkPoint* points, bezierCalculation bezierFunction,
    296             float t0, const SkPoint &p0, float t1, const SkPoint &p1,
    297             float& midT, SkPoint &midPoint, float errorSquared) {
    298         midT = (t1 + t0) / 2;
    299         float midX = (p1.x() + p0.x()) / 2;
    300         float midY = (p1.y() + p0.y()) / 2;
    301 
    302         midPoint = (*bezierFunction)(midT, points);
    303         float xError = midPoint.x() - midX;
    304         float yError = midPoint.y() - midY;
    305         float midErrorSquared = (xError * xError) + (yError * yError);
    306         return midErrorSquared > errorSquared;
    307     }
    308 
    309     // Divides Bezier curves until linear interpolation is very close to accurate, using
    310     // errorSquared as a metric. Cubic Bezier curves can have an inflection point that improperly
    311     // short-circuit subdivision. If you imagine an S shape, the top and bottom points being the
    312     // starting and end points, linear interpolation would mark the center where the curve places
    313     // the point. It is clearly not the case that we can linearly interpolate at that point.
    314     // doubleCheckDivision forces a second examination between subdivisions to ensure that linear
    315     // interpolation works.
    316     static void addBezier(const SkPoint* points,
    317             bezierCalculation bezierFunction, std::vector<SkPoint>& segmentPoints,
    318             std::vector<float>& lengths, float errorSquared, bool doubleCheckDivision) {
    319         typedef std::map<float, SkPoint> PointMap;
    320         PointMap tToPoint;
    321 
    322         tToPoint[0] = (*bezierFunction)(0, points);
    323         tToPoint[1] = (*bezierFunction)(1, points);
    324 
    325         PointMap::iterator iter = tToPoint.begin();
    326         PointMap::iterator next = iter;
    327         ++next;
    328         while (next != tToPoint.end()) {
    329             bool needsSubdivision = true;
    330             SkPoint midPoint;
    331             do {
    332                 float midT;
    333                 needsSubdivision = subdividePoints(points, bezierFunction, iter->first,
    334                     iter->second, next->first, next->second, midT, midPoint, errorSquared);
    335                 if (!needsSubdivision && doubleCheckDivision) {
    336                     SkPoint quarterPoint;
    337                     float quarterT;
    338                     needsSubdivision = subdividePoints(points, bezierFunction, iter->first,
    339                         iter->second, midT, midPoint, quarterT, quarterPoint, errorSquared);
    340                     if (needsSubdivision) {
    341                         // Found an inflection point. No need to double-check.
    342                         doubleCheckDivision = false;
    343                     }
    344                 }
    345                 if (needsSubdivision) {
    346                     next = tToPoint.insert(iter, PointMap::value_type(midT, midPoint));
    347                 }
    348             } while (needsSubdivision);
    349             iter = next;
    350             next++;
    351         }
    352 
    353         // Now that each division can use linear interpolation with less than the allowed error
    354         for (iter = tToPoint.begin(); iter != tToPoint.end(); ++iter) {
    355             addLine(segmentPoints, lengths, iter->second);
    356         }
    357     }
    358 
    359     static void createVerbSegments(const SkPath::Iter& pathIter, SkPath::Verb verb,
    360             const SkPoint* points, std::vector<SkPoint>& segmentPoints,
    361             std::vector<float>& lengths, float errorSquared, float errorConic) {
    362         switch (verb) {
    363             case SkPath::kMove_Verb:
    364                 addMove(segmentPoints, lengths, points[0]);
    365                 break;
    366             case SkPath::kClose_Verb:
    367                 addLine(segmentPoints, lengths, points[0]);
    368                 break;
    369             case SkPath::kLine_Verb:
    370                 addLine(segmentPoints, lengths, points[1]);
    371                 break;
    372             case SkPath::kQuad_Verb:
    373                 addBezier(points, quadraticBezierCalculation, segmentPoints, lengths,
    374                     errorSquared, false);
    375                 break;
    376             case SkPath::kCubic_Verb:
    377                 addBezier(points, cubicBezierCalculation, segmentPoints, lengths,
    378                     errorSquared, true);
    379                 break;
    380             case SkPath::kConic_Verb: {
    381                 SkAutoConicToQuads converter;
    382                 const SkPoint* quads = converter.computeQuads(
    383                         points, pathIter.conicWeight(), errorConic);
    384                 for (int i = 0; i < converter.countQuads(); i++) {
    385                     // Note: offset each subsequent quad by 2, since end points are shared
    386                     const SkPoint* quad = quads + i * 2;
    387                     addBezier(quad, quadraticBezierCalculation, segmentPoints, lengths,
    388                         errorConic, false);
    389                 }
    390                 break;
    391             }
    392             default:
    393                 static_assert(SkPath::kMove_Verb == 0
    394                                 && SkPath::kLine_Verb == 1
    395                                 && SkPath::kQuad_Verb == 2
    396                                 && SkPath::kConic_Verb == 3
    397                                 && SkPath::kCubic_Verb == 4
    398                                 && SkPath::kClose_Verb == 5
    399                                 && SkPath::kDone_Verb == 6,
    400                         "Path enum changed, new types may have been added.");
    401                 break;
    402         }
    403     }
    404 
    405     // Returns a float[] with each point along the path represented by 3 floats
    406     // * fractional length along the path that the point resides
    407     // * x coordinate
    408     // * y coordinate
    409     // Note that more than one point may have the same length along the path in
    410     // the case of a move.
    411     // NULL can be returned if the Path is empty.
    412     static jfloatArray approximate(JNIEnv* env, jclass clazz, jlong pathHandle,
    413             float acceptableError) {
    414         SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
    415         SkASSERT(path);
    416         SkPath::Iter pathIter(*path, false);
    417         SkPath::Verb verb;
    418         SkPoint points[4];
    419         std::vector<SkPoint> segmentPoints;
    420         std::vector<float> lengths;
    421         float errorSquared = acceptableError * acceptableError;
    422         float errorConic = acceptableError / 2; // somewhat arbitrary
    423 
    424         while ((verb = pathIter.next(points, false)) != SkPath::kDone_Verb) {
    425             createVerbSegments(pathIter, verb, points, segmentPoints, lengths,
    426                     errorSquared, errorConic);
    427         }
    428 
    429         if (segmentPoints.empty()) {
    430             int numVerbs = path->countVerbs();
    431             if (numVerbs == 1) {
    432                 addMove(segmentPoints, lengths, path->getPoint(0));
    433             } else {
    434                 // Invalid or empty path. Fall back to point(0,0)
    435                 addMove(segmentPoints, lengths, SkPoint());
    436             }
    437         }
    438 
    439         float totalLength = lengths.back();
    440         if (totalLength == 0) {
    441             // Lone Move instructions should still be able to animate at the same value.
    442             segmentPoints.push_back(segmentPoints.back());
    443             lengths.push_back(1);
    444             totalLength = 1;
    445         }
    446 
    447         size_t numPoints = segmentPoints.size();
    448         size_t approximationArraySize = numPoints * 3;
    449 
    450         float* approximation = new float[approximationArraySize];
    451 
    452         int approximationIndex = 0;
    453         for (size_t i = 0; i < numPoints; i++) {
    454             const SkPoint& point = segmentPoints[i];
    455             approximation[approximationIndex++] = lengths[i] / totalLength;
    456             approximation[approximationIndex++] = point.x();
    457             approximation[approximationIndex++] = point.y();
    458         }
    459 
    460         jfloatArray result = env->NewFloatArray(approximationArraySize);
    461         env->SetFloatArrayRegion(result, 0, approximationArraySize, approximation);
    462         delete[] approximation;
    463         return result;
    464     }
    465 
    466     // ---------------- @FastNative -----------------------------
    467 
    468     static jboolean isRect(JNIEnv* env, jclass clazz, jlong objHandle, jobject jrect) {
    469         SkRect rect;
    470         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    471         jboolean result = obj->isRect(&rect);
    472         GraphicsJNI::rect_to_jrectf(rect, env, jrect);
    473         return result;
    474     }
    475 
    476     // ---------------- @CriticalNative -------------------------
    477 
    478     static void reset(jlong objHandle) {
    479         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    480         obj->reset();
    481     }
    482 
    483     static void rewind(jlong objHandle) {
    484         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    485         obj->rewind();
    486     }
    487 
    488     static jboolean isEmpty(jlong objHandle) {
    489         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    490         return obj->isEmpty();
    491     }
    492 
    493     static jboolean isConvex(jlong objHandle) {
    494         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    495         return obj->isConvex();
    496     }
    497 
    498     static jint getFillType(jlong objHandle) {
    499         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    500         return obj->getFillType();
    501     }
    502 
    503     static void setFillType(jlong pathHandle, jint ftHandle) {;
    504         SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
    505         SkPath::FillType ft = static_cast<SkPath::FillType>(ftHandle);
    506         path->setFillType(ft);
    507     }
    508 };
    509 
    510 static const JNINativeMethod methods[] = {
    511     {"nInit","()J", (void*) SkPathGlue::init},
    512     {"nInit","(J)J", (void*) SkPathGlue::init_Path},
    513     {"nFinalize", "(J)V", (void*) SkPathGlue::finalize},
    514     {"nSet","(JJ)V", (void*) SkPathGlue::set},
    515     {"nComputeBounds","(JLandroid/graphics/RectF;)V", (void*) SkPathGlue::computeBounds},
    516     {"nIncReserve","(JI)V", (void*) SkPathGlue::incReserve},
    517     {"nMoveTo","(JFF)V", (void*) SkPathGlue::moveTo__FF},
    518     {"nRMoveTo","(JFF)V", (void*) SkPathGlue::rMoveTo},
    519     {"nLineTo","(JFF)V", (void*) SkPathGlue::lineTo__FF},
    520     {"nRLineTo","(JFF)V", (void*) SkPathGlue::rLineTo},
    521     {"nQuadTo","(JFFFF)V", (void*) SkPathGlue::quadTo__FFFF},
    522     {"nRQuadTo","(JFFFF)V", (void*) SkPathGlue::rQuadTo},
    523     {"nCubicTo","(JFFFFFF)V", (void*) SkPathGlue::cubicTo__FFFFFF},
    524     {"nRCubicTo","(JFFFFFF)V", (void*) SkPathGlue::rCubicTo},
    525     {"nArcTo","(JFFFFFFZ)V", (void*) SkPathGlue::arcTo},
    526     {"nClose","(J)V", (void*) SkPathGlue::close},
    527     {"nAddRect","(JFFFFI)V", (void*) SkPathGlue::addRect},
    528     {"nAddOval","(JFFFFI)V", (void*) SkPathGlue::addOval},
    529     {"nAddCircle","(JFFFI)V", (void*) SkPathGlue::addCircle},
    530     {"nAddArc","(JFFFFFF)V", (void*) SkPathGlue::addArc},
    531     {"nAddRoundRect","(JFFFFFFI)V", (void*) SkPathGlue::addRoundRectXY},
    532     {"nAddRoundRect","(JFFFF[FI)V", (void*) SkPathGlue::addRoundRect8},
    533     {"nAddPath","(JJFF)V", (void*) SkPathGlue::addPath__PathFF},
    534     {"nAddPath","(JJ)V", (void*) SkPathGlue::addPath__Path},
    535     {"nAddPath","(JJJ)V", (void*) SkPathGlue::addPath__PathMatrix},
    536     {"nOffset","(JFF)V", (void*) SkPathGlue::offset__FF},
    537     {"nSetLastPoint","(JFF)V", (void*) SkPathGlue::setLastPoint},
    538     {"nTransform","(JJJ)V", (void*) SkPathGlue::transform__MatrixPath},
    539     {"nTransform","(JJ)V", (void*) SkPathGlue::transform__Matrix},
    540     {"nOp","(JJIJ)Z", (void*) SkPathGlue::op},
    541     {"nApproximate", "(JF)[F", (void*) SkPathGlue::approximate},
    542 
    543     // ------- @FastNative below here ----------------------
    544     {"nIsRect","(JLandroid/graphics/RectF;)Z", (void*) SkPathGlue::isRect},
    545 
    546     // ------- @CriticalNative below here ------------------
    547     {"nReset","(J)V", (void*) SkPathGlue::reset},
    548     {"nRewind","(J)V", (void*) SkPathGlue::rewind},
    549     {"nIsEmpty","(J)Z", (void*) SkPathGlue::isEmpty},
    550     {"nIsConvex","(J)Z", (void*) SkPathGlue::isConvex},
    551     {"nGetFillType","(J)I", (void*) SkPathGlue::getFillType},
    552     {"nSetFillType","(JI)V", (void*) SkPathGlue::setFillType},
    553 };
    554 
    555 int register_android_graphics_Path(JNIEnv* env) {
    556     return RegisterMethodsOrDie(env, "android/graphics/Path", methods, NELEM(methods));
    557 
    558     static_assert(0  == SkPath::kCW_Direction,  "direction_mismatch");
    559     static_assert(1  == SkPath::kCCW_Direction, "direction_mismatch");
    560 }
    561 
    562 }
    563