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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     static void finalizer(SkPath* obj) {
     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     // ---------------- Regular JNI -----------------------------
     49 
     50     static jlong init(JNIEnv* env, jclass clazz) {
     51         return reinterpret_cast<jlong>(new SkPath());
     52     }
     53 
     54     static jlong init_Path(JNIEnv* env, jclass clazz, jlong valHandle) {
     55         SkPath* val = reinterpret_cast<SkPath*>(valHandle);
     56         return reinterpret_cast<jlong>(new SkPath(*val));
     57     }
     58 
     59     static jlong getFinalizer(JNIEnv* env, jclass clazz) {
     60         return static_cast<jlong>(reinterpret_cast<uintptr_t>(&finalizer));
     61     }
     62 
     63     static void set(JNIEnv* env, jclass clazz, jlong dstHandle, jlong srcHandle) {
     64         SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
     65         const SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
     66         *dst = *src;
     67     }
     68 
     69     static void computeBounds(JNIEnv* env, jclass clazz, jlong objHandle, jobject jbounds) {
     70         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     71         const SkRect& bounds = obj->getBounds();
     72         GraphicsJNI::rect_to_jrectf(bounds, env, jbounds);
     73     }
     74 
     75     static void incReserve(JNIEnv* env, jclass clazz, jlong objHandle, jint extraPtCount) {
     76         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     77         obj->incReserve(extraPtCount);
     78     }
     79 
     80     static void moveTo__FF(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x, jfloat y) {
     81         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     82         obj->moveTo(x, y);
     83     }
     84 
     85     static void rMoveTo(JNIEnv* env, jclass clazz, jlong objHandle, jfloat dx, jfloat dy) {
     86         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     87         obj->rMoveTo(dx, dy);
     88     }
     89 
     90     static void lineTo__FF(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x, jfloat y) {
     91         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     92         obj->lineTo(x, y);
     93     }
     94 
     95     static void rLineTo(JNIEnv* env, jclass clazz, jlong objHandle, jfloat dx, jfloat dy) {
     96         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
     97         obj->rLineTo(dx, dy);
     98     }
     99 
    100     static void quadTo__FFFF(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x1, jfloat y1,
    101             jfloat x2, jfloat y2) {
    102         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    103         obj->quadTo(x1, y1, x2, y2);
    104     }
    105 
    106     static void rQuadTo(JNIEnv* env, jclass clazz, jlong objHandle, jfloat dx1, jfloat dy1,
    107             jfloat dx2, jfloat dy2) {
    108         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    109         obj->rQuadTo(dx1, dy1, dx2, dy2);
    110     }
    111 
    112     static void cubicTo__FFFFFF(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x1, jfloat y1,
    113             jfloat x2, jfloat y2, jfloat x3, jfloat y3) {
    114         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    115         obj->cubicTo(x1, y1, x2, y2, x3, y3);
    116     }
    117 
    118     static void rCubicTo(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x1, jfloat y1,
    119             jfloat x2, jfloat y2, jfloat x3, jfloat y3) {
    120         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    121         obj->rCubicTo(x1, y1, x2, y2, x3, y3);
    122     }
    123 
    124     static void arcTo(JNIEnv* env, jclass clazz, jlong objHandle, jfloat left, jfloat top,
    125             jfloat right, jfloat bottom, jfloat startAngle, jfloat sweepAngle,
    126             jboolean forceMoveTo) {
    127         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    128         SkRect oval = SkRect::MakeLTRB(left, top, right, bottom);
    129         obj->arcTo(oval, startAngle, sweepAngle, forceMoveTo);
    130     }
    131 
    132     static void close(JNIEnv* env, jclass clazz, jlong objHandle) {
    133         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    134         obj->close();
    135     }
    136 
    137     static void addRect(JNIEnv* env, jclass clazz, jlong objHandle,
    138             jfloat left, jfloat top, jfloat right, jfloat bottom, jint dirHandle) {
    139         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    140         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    141         obj->addRect(left, top, right, bottom, dir);
    142     }
    143 
    144     static void addOval(JNIEnv* env, jclass clazz, jlong objHandle,
    145             jfloat left, jfloat top, jfloat right, jfloat bottom, jint dirHandle) {
    146         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    147         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    148         SkRect oval = SkRect::MakeLTRB(left, top, right, bottom);
    149         obj->addOval(oval, dir);
    150     }
    151 
    152     static void addCircle(JNIEnv* env, jclass clazz, jlong objHandle, jfloat x, jfloat y,
    153             jfloat radius, jint dirHandle) {
    154         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    155         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    156         obj->addCircle(x, y, radius, dir);
    157     }
    158 
    159     static void addArc(JNIEnv* env, jclass clazz, jlong objHandle, jfloat left, jfloat top,
    160             jfloat right, jfloat bottom, jfloat startAngle, jfloat sweepAngle) {
    161         SkRect oval = SkRect::MakeLTRB(left, top, right, bottom);
    162         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    163         obj->addArc(oval, startAngle, sweepAngle);
    164     }
    165 
    166     static void addRoundRectXY(JNIEnv* env, jclass clazz, jlong objHandle, jfloat left, jfloat top,
    167             jfloat right, jfloat bottom, jfloat rx, jfloat ry, jint dirHandle) {
    168         SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
    169         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    170         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    171         obj->addRoundRect(rect, rx, ry, dir);
    172     }
    173 
    174     static void addRoundRect8(JNIEnv* env, jclass clazz, jlong objHandle, jfloat left, jfloat top,
    175                 jfloat right, jfloat bottom, jfloatArray array, jint dirHandle) {
    176         SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
    177         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    178         SkPath::Direction dir = static_cast<SkPath::Direction>(dirHandle);
    179         AutoJavaFloatArray  afa(env, array, 8);
    180 #ifdef SK_SCALAR_IS_FLOAT
    181         const float* src = afa.ptr();
    182 #else
    183         #error Need to convert float array to SkScalar array before calling the following function.
    184 #endif
    185         obj->addRoundRect(rect, src, dir);
    186     }
    187 
    188     static void addPath__PathFF(JNIEnv* env, jclass clazz, jlong objHandle, jlong srcHandle,
    189             jfloat dx, jfloat dy) {
    190         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    191         SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
    192         obj->addPath(*src, dx, dy);
    193     }
    194 
    195     static void addPath__Path(JNIEnv* env, jclass clazz, jlong objHandle, jlong srcHandle) {
    196         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    197         SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
    198         obj->addPath(*src);
    199     }
    200 
    201     static void addPath__PathMatrix(JNIEnv* env, jclass clazz, jlong objHandle, jlong srcHandle,
    202             jlong matrixHandle) {
    203         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    204         SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
    205         SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
    206         obj->addPath(*src, *matrix);
    207     }
    208 
    209     static void offset__FF(JNIEnv* env, jclass clazz, jlong objHandle, jfloat dx, jfloat dy) {
    210         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    211         obj->offset(dx, dy);
    212     }
    213 
    214     static void setLastPoint(JNIEnv* env, jclass clazz, jlong objHandle, jfloat dx, jfloat dy) {
    215         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    216         obj->setLastPt(dx, dy);
    217     }
    218 
    219     static void transform__MatrixPath(JNIEnv* env, jclass clazz, jlong objHandle, jlong matrixHandle,
    220             jlong dstHandle) {
    221         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    222         SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
    223         SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
    224         obj->transform(*matrix, dst);
    225     }
    226 
    227     static void transform__Matrix(JNIEnv* env, jclass clazz, jlong objHandle, jlong matrixHandle) {
    228         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    229         SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
    230         obj->transform(*matrix);
    231     }
    232 
    233     static jboolean op(JNIEnv* env, jclass clazz, jlong p1Handle, jlong p2Handle, jint opHandle,
    234             jlong rHandle) {
    235         SkPath* p1  = reinterpret_cast<SkPath*>(p1Handle);
    236         SkPath* p2  = reinterpret_cast<SkPath*>(p2Handle);
    237         SkPathOp op = static_cast<SkPathOp>(opHandle);
    238         SkPath* r   = reinterpret_cast<SkPath*>(rHandle);
    239         return Op(*p1, *p2, op, r);
    240      }
    241 
    242     typedef SkPoint (*bezierCalculation)(float t, const SkPoint* points);
    243 
    244     static void addMove(std::vector<SkPoint>& segmentPoints, std::vector<float>& lengths,
    245             const SkPoint& point) {
    246         float length = 0;
    247         if (!lengths.empty()) {
    248             length = lengths.back();
    249         }
    250         segmentPoints.push_back(point);
    251         lengths.push_back(length);
    252     }
    253 
    254     static void addLine(std::vector<SkPoint>& segmentPoints, std::vector<float>& lengths,
    255             const SkPoint& toPoint) {
    256         if (segmentPoints.empty()) {
    257             segmentPoints.push_back(SkPoint::Make(0, 0));
    258             lengths.push_back(0);
    259         } else if (segmentPoints.back() == toPoint) {
    260             return; // Empty line
    261         }
    262         float length = lengths.back() + SkPoint::Distance(segmentPoints.back(), toPoint);
    263         segmentPoints.push_back(toPoint);
    264         lengths.push_back(length);
    265     }
    266 
    267     static float cubicCoordinateCalculation(float t, float p0, float p1, float p2, float p3) {
    268         float oneMinusT = 1 - t;
    269         float oneMinusTSquared = oneMinusT * oneMinusT;
    270         float oneMinusTCubed = oneMinusTSquared * oneMinusT;
    271         float tSquared = t * t;
    272         float tCubed = tSquared * t;
    273         return (oneMinusTCubed * p0) + (3 * oneMinusTSquared * t * p1)
    274                 + (3 * oneMinusT * tSquared * p2) + (tCubed * p3);
    275     }
    276 
    277     static SkPoint cubicBezierCalculation(float t, const SkPoint* points) {
    278         float x = cubicCoordinateCalculation(t, points[0].x(), points[1].x(),
    279             points[2].x(), points[3].x());
    280         float y = cubicCoordinateCalculation(t, points[0].y(), points[1].y(),
    281             points[2].y(), points[3].y());
    282         return SkPoint::Make(x, y);
    283     }
    284 
    285     static float quadraticCoordinateCalculation(float t, float p0, float p1, float p2) {
    286         float oneMinusT = 1 - t;
    287         return oneMinusT * ((oneMinusT * p0) + (t * p1)) + t * ((oneMinusT * p1) + (t * p2));
    288     }
    289 
    290     static SkPoint quadraticBezierCalculation(float t, const SkPoint* points) {
    291         float x = quadraticCoordinateCalculation(t, points[0].x(), points[1].x(), points[2].x());
    292         float y = quadraticCoordinateCalculation(t, points[0].y(), points[1].y(), points[2].y());
    293         return SkPoint::Make(x, y);
    294     }
    295 
    296     // Subdivide a section of the Bezier curve, set the mid-point and the mid-t value.
    297     // Returns true if further subdivision is necessary as defined by errorSquared.
    298     static bool subdividePoints(const SkPoint* points, bezierCalculation bezierFunction,
    299             float t0, const SkPoint &p0, float t1, const SkPoint &p1,
    300             float& midT, SkPoint &midPoint, float errorSquared) {
    301         midT = (t1 + t0) / 2;
    302         float midX = (p1.x() + p0.x()) / 2;
    303         float midY = (p1.y() + p0.y()) / 2;
    304 
    305         midPoint = (*bezierFunction)(midT, points);
    306         float xError = midPoint.x() - midX;
    307         float yError = midPoint.y() - midY;
    308         float midErrorSquared = (xError * xError) + (yError * yError);
    309         return midErrorSquared > errorSquared;
    310     }
    311 
    312     // Divides Bezier curves until linear interpolation is very close to accurate, using
    313     // errorSquared as a metric. Cubic Bezier curves can have an inflection point that improperly
    314     // short-circuit subdivision. If you imagine an S shape, the top and bottom points being the
    315     // starting and end points, linear interpolation would mark the center where the curve places
    316     // the point. It is clearly not the case that we can linearly interpolate at that point.
    317     // doubleCheckDivision forces a second examination between subdivisions to ensure that linear
    318     // interpolation works.
    319     static void addBezier(const SkPoint* points,
    320             bezierCalculation bezierFunction, std::vector<SkPoint>& segmentPoints,
    321             std::vector<float>& lengths, float errorSquared, bool doubleCheckDivision) {
    322         typedef std::map<float, SkPoint> PointMap;
    323         PointMap tToPoint;
    324 
    325         tToPoint[0] = (*bezierFunction)(0, points);
    326         tToPoint[1] = (*bezierFunction)(1, points);
    327 
    328         PointMap::iterator iter = tToPoint.begin();
    329         PointMap::iterator next = iter;
    330         ++next;
    331         while (next != tToPoint.end()) {
    332             bool needsSubdivision = true;
    333             SkPoint midPoint;
    334             do {
    335                 float midT;
    336                 needsSubdivision = subdividePoints(points, bezierFunction, iter->first,
    337                     iter->second, next->first, next->second, midT, midPoint, errorSquared);
    338                 if (!needsSubdivision && doubleCheckDivision) {
    339                     SkPoint quarterPoint;
    340                     float quarterT;
    341                     needsSubdivision = subdividePoints(points, bezierFunction, iter->first,
    342                         iter->second, midT, midPoint, quarterT, quarterPoint, errorSquared);
    343                     if (needsSubdivision) {
    344                         // Found an inflection point. No need to double-check.
    345                         doubleCheckDivision = false;
    346                     }
    347                 }
    348                 if (needsSubdivision) {
    349                     next = tToPoint.insert(iter, PointMap::value_type(midT, midPoint));
    350                 }
    351             } while (needsSubdivision);
    352             iter = next;
    353             next++;
    354         }
    355 
    356         // Now that each division can use linear interpolation with less than the allowed error
    357         for (iter = tToPoint.begin(); iter != tToPoint.end(); ++iter) {
    358             addLine(segmentPoints, lengths, iter->second);
    359         }
    360     }
    361 
    362     static void createVerbSegments(const SkPath::Iter& pathIter, SkPath::Verb verb,
    363             const SkPoint* points, std::vector<SkPoint>& segmentPoints,
    364             std::vector<float>& lengths, float errorSquared, float errorConic) {
    365         switch (verb) {
    366             case SkPath::kMove_Verb:
    367                 addMove(segmentPoints, lengths, points[0]);
    368                 break;
    369             case SkPath::kClose_Verb:
    370                 addLine(segmentPoints, lengths, points[0]);
    371                 break;
    372             case SkPath::kLine_Verb:
    373                 addLine(segmentPoints, lengths, points[1]);
    374                 break;
    375             case SkPath::kQuad_Verb:
    376                 addBezier(points, quadraticBezierCalculation, segmentPoints, lengths,
    377                     errorSquared, false);
    378                 break;
    379             case SkPath::kCubic_Verb:
    380                 addBezier(points, cubicBezierCalculation, segmentPoints, lengths,
    381                     errorSquared, true);
    382                 break;
    383             case SkPath::kConic_Verb: {
    384                 SkAutoConicToQuads converter;
    385                 const SkPoint* quads = converter.computeQuads(
    386                         points, pathIter.conicWeight(), errorConic);
    387                 for (int i = 0; i < converter.countQuads(); i++) {
    388                     // Note: offset each subsequent quad by 2, since end points are shared
    389                     const SkPoint* quad = quads + i * 2;
    390                     addBezier(quad, quadraticBezierCalculation, segmentPoints, lengths,
    391                         errorConic, false);
    392                 }
    393                 break;
    394             }
    395             default:
    396                 static_assert(SkPath::kMove_Verb == 0
    397                                 && SkPath::kLine_Verb == 1
    398                                 && SkPath::kQuad_Verb == 2
    399                                 && SkPath::kConic_Verb == 3
    400                                 && SkPath::kCubic_Verb == 4
    401                                 && SkPath::kClose_Verb == 5
    402                                 && SkPath::kDone_Verb == 6,
    403                         "Path enum changed, new types may have been added.");
    404                 break;
    405         }
    406     }
    407 
    408     // Returns a float[] with each point along the path represented by 3 floats
    409     // * fractional length along the path that the point resides
    410     // * x coordinate
    411     // * y coordinate
    412     // Note that more than one point may have the same length along the path in
    413     // the case of a move.
    414     // NULL can be returned if the Path is empty.
    415     static jfloatArray approximate(JNIEnv* env, jclass clazz, jlong pathHandle,
    416             float acceptableError) {
    417         SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
    418         SkASSERT(path);
    419         SkPath::Iter pathIter(*path, false);
    420         SkPath::Verb verb;
    421         SkPoint points[4];
    422         std::vector<SkPoint> segmentPoints;
    423         std::vector<float> lengths;
    424         float errorSquared = acceptableError * acceptableError;
    425         float errorConic = acceptableError / 2; // somewhat arbitrary
    426 
    427         while ((verb = pathIter.next(points, false)) != SkPath::kDone_Verb) {
    428             createVerbSegments(pathIter, verb, points, segmentPoints, lengths,
    429                     errorSquared, errorConic);
    430         }
    431 
    432         if (segmentPoints.empty()) {
    433             int numVerbs = path->countVerbs();
    434             if (numVerbs == 1) {
    435                 addMove(segmentPoints, lengths, path->getPoint(0));
    436             } else {
    437                 // Invalid or empty path. Fall back to point(0,0)
    438                 addMove(segmentPoints, lengths, SkPoint());
    439             }
    440         }
    441 
    442         float totalLength = lengths.back();
    443         if (totalLength == 0) {
    444             // Lone Move instructions should still be able to animate at the same value.
    445             segmentPoints.push_back(segmentPoints.back());
    446             lengths.push_back(1);
    447             totalLength = 1;
    448         }
    449 
    450         size_t numPoints = segmentPoints.size();
    451         size_t approximationArraySize = numPoints * 3;
    452 
    453         float* approximation = new float[approximationArraySize];
    454 
    455         int approximationIndex = 0;
    456         for (size_t i = 0; i < numPoints; i++) {
    457             const SkPoint& point = segmentPoints[i];
    458             approximation[approximationIndex++] = lengths[i] / totalLength;
    459             approximation[approximationIndex++] = point.x();
    460             approximation[approximationIndex++] = point.y();
    461         }
    462 
    463         jfloatArray result = env->NewFloatArray(approximationArraySize);
    464         env->SetFloatArrayRegion(result, 0, approximationArraySize, approximation);
    465         delete[] approximation;
    466         return result;
    467     }
    468 
    469     // ---------------- @FastNative -----------------------------
    470 
    471     static jboolean isRect(JNIEnv* env, jclass clazz, jlong objHandle, jobject jrect) {
    472         SkRect rect;
    473         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    474         jboolean result = obj->isRect(&rect);
    475         if (jrect) {
    476             GraphicsJNI::rect_to_jrectf(rect, env, jrect);
    477         }
    478         return result;
    479     }
    480 
    481     // ---------------- @CriticalNative -------------------------
    482 
    483     static void reset(jlong objHandle) {
    484         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    485         obj->reset();
    486     }
    487 
    488     static void rewind(jlong objHandle) {
    489         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    490         obj->rewind();
    491     }
    492 
    493     static jboolean isEmpty(jlong objHandle) {
    494         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    495         return obj->isEmpty();
    496     }
    497 
    498     static jboolean isConvex(jlong objHandle) {
    499         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    500         return obj->isConvex();
    501     }
    502 
    503     static jint getFillType(jlong objHandle) {
    504         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
    505         return obj->getFillType();
    506     }
    507 
    508     static void setFillType(jlong pathHandle, jint ftHandle) {;
    509         SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
    510         SkPath::FillType ft = static_cast<SkPath::FillType>(ftHandle);
    511         path->setFillType(ft);
    512     }
    513 };
    514 
    515 static const JNINativeMethod methods[] = {
    516     {"nInit","()J", (void*) SkPathGlue::init},
    517     {"nInit","(J)J", (void*) SkPathGlue::init_Path},
    518     {"nGetFinalizer", "()J", (void*) SkPathGlue::getFinalizer},
    519     {"nSet","(JJ)V", (void*) SkPathGlue::set},
    520     {"nComputeBounds","(JLandroid/graphics/RectF;)V", (void*) SkPathGlue::computeBounds},
    521     {"nIncReserve","(JI)V", (void*) SkPathGlue::incReserve},
    522     {"nMoveTo","(JFF)V", (void*) SkPathGlue::moveTo__FF},
    523     {"nRMoveTo","(JFF)V", (void*) SkPathGlue::rMoveTo},
    524     {"nLineTo","(JFF)V", (void*) SkPathGlue::lineTo__FF},
    525     {"nRLineTo","(JFF)V", (void*) SkPathGlue::rLineTo},
    526     {"nQuadTo","(JFFFF)V", (void*) SkPathGlue::quadTo__FFFF},
    527     {"nRQuadTo","(JFFFF)V", (void*) SkPathGlue::rQuadTo},
    528     {"nCubicTo","(JFFFFFF)V", (void*) SkPathGlue::cubicTo__FFFFFF},
    529     {"nRCubicTo","(JFFFFFF)V", (void*) SkPathGlue::rCubicTo},
    530     {"nArcTo","(JFFFFFFZ)V", (void*) SkPathGlue::arcTo},
    531     {"nClose","(J)V", (void*) SkPathGlue::close},
    532     {"nAddRect","(JFFFFI)V", (void*) SkPathGlue::addRect},
    533     {"nAddOval","(JFFFFI)V", (void*) SkPathGlue::addOval},
    534     {"nAddCircle","(JFFFI)V", (void*) SkPathGlue::addCircle},
    535     {"nAddArc","(JFFFFFF)V", (void*) SkPathGlue::addArc},
    536     {"nAddRoundRect","(JFFFFFFI)V", (void*) SkPathGlue::addRoundRectXY},
    537     {"nAddRoundRect","(JFFFF[FI)V", (void*) SkPathGlue::addRoundRect8},
    538     {"nAddPath","(JJFF)V", (void*) SkPathGlue::addPath__PathFF},
    539     {"nAddPath","(JJ)V", (void*) SkPathGlue::addPath__Path},
    540     {"nAddPath","(JJJ)V", (void*) SkPathGlue::addPath__PathMatrix},
    541     {"nOffset","(JFF)V", (void*) SkPathGlue::offset__FF},
    542     {"nSetLastPoint","(JFF)V", (void*) SkPathGlue::setLastPoint},
    543     {"nTransform","(JJJ)V", (void*) SkPathGlue::transform__MatrixPath},
    544     {"nTransform","(JJ)V", (void*) SkPathGlue::transform__Matrix},
    545     {"nOp","(JJIJ)Z", (void*) SkPathGlue::op},
    546     {"nApproximate", "(JF)[F", (void*) SkPathGlue::approximate},
    547 
    548     // ------- @FastNative below here ----------------------
    549     {"nIsRect","(JLandroid/graphics/RectF;)Z", (void*) SkPathGlue::isRect},
    550 
    551     // ------- @CriticalNative below here ------------------
    552     {"nReset","(J)V", (void*) SkPathGlue::reset},
    553     {"nRewind","(J)V", (void*) SkPathGlue::rewind},
    554     {"nIsEmpty","(J)Z", (void*) SkPathGlue::isEmpty},
    555     {"nIsConvex","(J)Z", (void*) SkPathGlue::isConvex},
    556     {"nGetFillType","(J)I", (void*) SkPathGlue::getFillType},
    557     {"nSetFillType","(JI)V", (void*) SkPathGlue::setFillType},
    558 };
    559 
    560 int register_android_graphics_Path(JNIEnv* env) {
    561     return RegisterMethodsOrDie(env, "android/graphics/Path", methods, NELEM(methods));
    562 
    563     static_assert(0  == SkPath::kCW_Direction,  "direction_mismatch");
    564     static_assert(1  == SkPath::kCCW_Direction, "direction_mismatch");
    565 }
    566 
    567 }
    568