1 /* libs/android_runtime/android/graphics/Matrix.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 #include "GraphicsJNI.h"
19 #include "Matrix.h"
20 #include "SkMatrix.h"
21 #include "core_jni_helpers.h"
22
23 #include <Caches.h>
24 #include <jni.h>
25
26 namespace android {
27
28 static_assert(sizeof(SkMatrix) == 40, "Unexpected sizeof(SkMatrix), "
29 "update size in Matrix.java#NATIVE_ALLOCATION_SIZE and here");
30 static_assert(SK_SCALAR_IS_FLOAT, "SK_SCALAR_IS_FLOAT is false, "
31 "only float scalar is supported");
32
33 class SkMatrixGlue {
34 public:
35
36 // ---------------- Regular JNI -----------------------------
37
finalizer(jlong objHandle)38 static void finalizer(jlong objHandle) {
39 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
40 delete obj;
41 }
42
getNativeFinalizer(JNIEnv * env,jobject clazz)43 static jlong getNativeFinalizer(JNIEnv* env, jobject clazz) {
44 return static_cast<jlong>(reinterpret_cast<uintptr_t>(&finalizer));
45 }
46
create(JNIEnv * env,jobject clazz,jlong srcHandle)47 static jlong create(JNIEnv* env, jobject clazz, jlong srcHandle) {
48 const SkMatrix* src = reinterpret_cast<SkMatrix*>(srcHandle);
49 SkMatrix* obj = new SkMatrix();
50 if (src)
51 *obj = *src;
52 else
53 obj->reset();
54 return reinterpret_cast<jlong>(obj);
55 }
56
57 // ---------------- @FastNative -----------------------------
58
mapPoints(JNIEnv * env,jobject clazz,jlong matrixHandle,jfloatArray dst,jint dstIndex,jfloatArray src,jint srcIndex,jint ptCount,jboolean isPts)59 static void mapPoints(JNIEnv* env, jobject clazz, jlong matrixHandle,
60 jfloatArray dst, jint dstIndex, jfloatArray src, jint srcIndex,
61 jint ptCount, jboolean isPts) {
62 SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
63 SkASSERT(ptCount >= 0);
64 AutoJavaFloatArray autoSrc(env, src, srcIndex + (ptCount << 1),
65 kRO_JNIAccess);
66 AutoJavaFloatArray autoDst(env, dst, dstIndex + (ptCount << 1),
67 kRW_JNIAccess);
68 float* srcArray = autoSrc.ptr() + srcIndex;
69 float* dstArray = autoDst.ptr() + dstIndex;
70 if (isPts)
71 matrix->mapPoints((SkPoint*) dstArray, (const SkPoint*) srcArray,
72 ptCount);
73 else
74 matrix->mapVectors((SkVector*) dstArray, (const SkVector*) srcArray,
75 ptCount);
76 }
77
mapRect__RectFRectF(JNIEnv * env,jobject clazz,jlong matrixHandle,jobjectArray dst,jobject src)78 static jboolean mapRect__RectFRectF(JNIEnv* env, jobject clazz,
79 jlong matrixHandle, jobjectArray dst, jobject src) {
80 SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
81 SkRect dst_, src_;
82 GraphicsJNI::jrectf_to_rect(env, src, &src_);
83 jboolean rectStaysRect = matrix->mapRect(&dst_, src_);
84 GraphicsJNI::rect_to_jrectf(dst_, env, dst);
85 return rectStaysRect ? JNI_TRUE : JNI_FALSE;
86 }
87
setRectToRect(JNIEnv * env,jobject clazz,jlong matrixHandle,jobject src,jobject dst,jint stfHandle)88 static jboolean setRectToRect(JNIEnv* env, jobject clazz,
89 jlong matrixHandle, jobject src, jobject dst, jint stfHandle) {
90 SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
91 SkMatrix::ScaleToFit stf = static_cast<SkMatrix::ScaleToFit>(stfHandle);
92 SkRect src_;
93 GraphicsJNI::jrectf_to_rect(env, src, &src_);
94 SkRect dst_;
95 GraphicsJNI::jrectf_to_rect(env, dst, &dst_);
96 return matrix->setRectToRect(src_, dst_, stf) ? JNI_TRUE : JNI_FALSE;
97 }
98
setPolyToPoly(JNIEnv * env,jobject clazz,jlong matrixHandle,jfloatArray jsrc,jint srcIndex,jfloatArray jdst,jint dstIndex,jint ptCount)99 static jboolean setPolyToPoly(JNIEnv* env, jobject clazz,
100 jlong matrixHandle, jfloatArray jsrc, jint srcIndex,
101 jfloatArray jdst, jint dstIndex, jint ptCount) {
102 SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
103 SkASSERT(srcIndex >= 0);
104 SkASSERT(dstIndex >= 0);
105 SkASSERT((unsigned )ptCount <= 4);
106
107 AutoJavaFloatArray autoSrc(env, jsrc, srcIndex + (ptCount << 1),
108 kRO_JNIAccess);
109 AutoJavaFloatArray autoDst(env, jdst, dstIndex + (ptCount << 1),
110 kRW_JNIAccess);
111 float* src = autoSrc.ptr() + srcIndex;
112 float* dst = autoDst.ptr() + dstIndex;
113 bool result;
114
115 result = matrix->setPolyToPoly((const SkPoint*) src,
116 (const SkPoint*) dst, ptCount);
117 return result ? JNI_TRUE : JNI_FALSE;
118 }
119
getValues(JNIEnv * env,jobject clazz,jlong matrixHandle,jfloatArray values)120 static void getValues(JNIEnv* env, jobject clazz, jlong matrixHandle,
121 jfloatArray values) {
122 SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
123 AutoJavaFloatArray autoValues(env, values, 9, kRW_JNIAccess);
124 float* dst = autoValues.ptr();
125 for (int i = 0; i < 9; i++) {
126 dst[i] = matrix->get(i);
127 }
128 }
129
setValues(JNIEnv * env,jobject clazz,jlong matrixHandle,jfloatArray values)130 static void setValues(JNIEnv* env, jobject clazz, jlong matrixHandle,
131 jfloatArray values) {
132 SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
133 AutoJavaFloatArray autoValues(env, values, 9, kRO_JNIAccess);
134 const float* src = autoValues.ptr();
135
136 for (int i = 0; i < 9; i++) {
137 matrix->set(i, src[i]);
138 }
139 }
140
141 // ---------------- @CriticalNative -----------------------------
142
isIdentity(jlong objHandle)143 static jboolean isIdentity(jlong objHandle) {
144 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
145 return obj->isIdentity() ? JNI_TRUE : JNI_FALSE;
146 }
147
isAffine(jlong objHandle)148 static jboolean isAffine(jlong objHandle) {
149 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
150 return obj->asAffine(NULL) ? JNI_TRUE : JNI_FALSE;
151 }
152
rectStaysRect(jlong objHandle)153 static jboolean rectStaysRect(jlong objHandle) {
154 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
155 return obj->rectStaysRect() ? JNI_TRUE : JNI_FALSE;
156 }
157
reset(jlong objHandle)158 static void reset(jlong objHandle) {
159 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
160 obj->reset();
161 }
162
set(jlong objHandle,jlong otherHandle)163 static void set(jlong objHandle, jlong otherHandle) {
164 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
165 SkMatrix* other = reinterpret_cast<SkMatrix*>(otherHandle);
166 *obj = *other;
167 }
168
setTranslate(jlong objHandle,jfloat dx,jfloat dy)169 static void setTranslate(jlong objHandle, jfloat dx, jfloat dy) {
170 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
171 obj->setTranslate(dx, dy);
172 }
173
setScale__FFFF(jlong objHandle,jfloat sx,jfloat sy,jfloat px,jfloat py)174 static void setScale__FFFF(jlong objHandle, jfloat sx, jfloat sy, jfloat px,
175 jfloat py) {
176 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
177 obj->setScale(sx, sy, px, py);
178 }
179
setScale__FF(jlong objHandle,jfloat sx,jfloat sy)180 static void setScale__FF(jlong objHandle, jfloat sx, jfloat sy) {
181 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
182 obj->setScale(sx, sy);
183 }
184
setRotate__FFF(jlong objHandle,jfloat degrees,jfloat px,jfloat py)185 static void setRotate__FFF(jlong objHandle, jfloat degrees, jfloat px,
186 jfloat py) {
187 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
188 obj->setRotate(degrees, px, py);
189 }
190
setRotate__F(jlong objHandle,jfloat degrees)191 static void setRotate__F(jlong objHandle, jfloat degrees) {
192 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
193 obj->setRotate(degrees);
194 }
195
setSinCos__FFFF(jlong objHandle,jfloat sinValue,jfloat cosValue,jfloat px,jfloat py)196 static void setSinCos__FFFF(jlong objHandle, jfloat sinValue,
197 jfloat cosValue, jfloat px, jfloat py) {
198 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
199 obj->setSinCos(sinValue, cosValue, px, py);
200 }
201
setSinCos__FF(jlong objHandle,jfloat sinValue,jfloat cosValue)202 static void setSinCos__FF(jlong objHandle, jfloat sinValue,
203 jfloat cosValue) {
204 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
205 obj->setSinCos(sinValue, cosValue);
206 }
207
setSkew__FFFF(jlong objHandle,jfloat kx,jfloat ky,jfloat px,jfloat py)208 static void setSkew__FFFF(jlong objHandle, jfloat kx, jfloat ky, jfloat px,
209 jfloat py) {
210 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
211 obj->setSkew(kx, ky, px, py);
212 }
213
setSkew__FF(jlong objHandle,jfloat kx,jfloat ky)214 static void setSkew__FF(jlong objHandle, jfloat kx, jfloat ky) {
215 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
216 obj->setSkew(kx, ky);
217 }
218
setConcat(jlong objHandle,jlong aHandle,jlong bHandle)219 static void setConcat(jlong objHandle, jlong aHandle, jlong bHandle) {
220 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
221 SkMatrix* a = reinterpret_cast<SkMatrix*>(aHandle);
222 SkMatrix* b = reinterpret_cast<SkMatrix*>(bHandle);
223 obj->setConcat(*a, *b);
224 }
225
preTranslate(jlong objHandle,jfloat dx,jfloat dy)226 static void preTranslate(jlong objHandle, jfloat dx, jfloat dy) {
227 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
228 obj->preTranslate(dx, dy);
229 }
230
preScale__FFFF(jlong objHandle,jfloat sx,jfloat sy,jfloat px,jfloat py)231 static void preScale__FFFF(jlong objHandle, jfloat sx, jfloat sy, jfloat px,
232 jfloat py) {
233 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
234 obj->preScale(sx, sy, px, py);
235 }
236
preScale__FF(jlong objHandle,jfloat sx,jfloat sy)237 static void preScale__FF(jlong objHandle, jfloat sx, jfloat sy) {
238 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
239 obj->preScale(sx, sy);
240 }
241
preRotate__FFF(jlong objHandle,jfloat degrees,jfloat px,jfloat py)242 static void preRotate__FFF(jlong objHandle, jfloat degrees, jfloat px,
243 jfloat py) {
244 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
245 obj->preRotate(degrees, px, py);
246 }
247
preRotate__F(jlong objHandle,jfloat degrees)248 static void preRotate__F(jlong objHandle, jfloat degrees) {
249 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
250 obj->preRotate(degrees);
251 }
252
preSkew__FFFF(jlong objHandle,jfloat kx,jfloat ky,jfloat px,jfloat py)253 static void preSkew__FFFF(jlong objHandle, jfloat kx, jfloat ky, jfloat px,
254 jfloat py) {
255 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
256 obj->preSkew(kx, ky, px, py);
257 }
258
preSkew__FF(jlong objHandle,jfloat kx,jfloat ky)259 static void preSkew__FF(jlong objHandle, jfloat kx, jfloat ky) {
260 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
261 obj->preSkew(kx, ky);
262 }
263
preConcat(jlong objHandle,jlong otherHandle)264 static void preConcat(jlong objHandle, jlong otherHandle) {
265 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
266 SkMatrix* other = reinterpret_cast<SkMatrix*>(otherHandle);
267 obj->preConcat(*other);
268 }
269
postTranslate(jlong objHandle,jfloat dx,jfloat dy)270 static void postTranslate(jlong objHandle, jfloat dx, jfloat dy) {
271 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
272 obj->postTranslate(dx, dy);
273 }
274
postScale__FFFF(jlong objHandle,jfloat sx,jfloat sy,jfloat px,jfloat py)275 static void postScale__FFFF(jlong objHandle, jfloat sx, jfloat sy,
276 jfloat px, jfloat py) {
277 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
278 obj->postScale(sx, sy, px, py);
279 }
280
postScale__FF(jlong objHandle,jfloat sx,jfloat sy)281 static void postScale__FF(jlong objHandle, jfloat sx, jfloat sy) {
282 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
283 obj->postScale(sx, sy);
284 }
285
postRotate__FFF(jlong objHandle,jfloat degrees,jfloat px,jfloat py)286 static void postRotate__FFF(jlong objHandle, jfloat degrees, jfloat px,
287 jfloat py) {
288 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
289 obj->postRotate(degrees, px, py);
290 }
291
postRotate__F(jlong objHandle,jfloat degrees)292 static void postRotate__F(jlong objHandle, jfloat degrees) {
293 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
294 obj->postRotate(degrees);
295 }
296
postSkew__FFFF(jlong objHandle,jfloat kx,jfloat ky,jfloat px,jfloat py)297 static void postSkew__FFFF(jlong objHandle, jfloat kx, jfloat ky, jfloat px,
298 jfloat py) {
299 SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
300 obj->postSkew(kx, ky, px, py);
301 }
302
postSkew__FF(jlong matrixHandle,jfloat kx,jfloat ky)303 static void postSkew__FF(jlong matrixHandle, jfloat kx, jfloat ky) {
304 SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
305 matrix->postSkew(kx, ky);
306 }
307
postConcat(jlong matrixHandle,jlong otherHandle)308 static void postConcat(jlong matrixHandle, jlong otherHandle) {
309 SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
310 SkMatrix* other = reinterpret_cast<SkMatrix*>(otherHandle);
311 matrix->postConcat(*other);
312 }
313
invert(jlong matrixHandle,jlong inverseHandle)314 static jboolean invert(jlong matrixHandle, jlong inverseHandle) {
315 SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
316 SkMatrix* inverse = reinterpret_cast<SkMatrix*>(inverseHandle);
317 return matrix->invert(inverse);
318 }
319
mapRadius(jlong matrixHandle,jfloat radius)320 static jfloat mapRadius(jlong matrixHandle, jfloat radius) {
321 SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
322 float result;
323 result = SkScalarToFloat(matrix->mapRadius(radius));
324 return static_cast<jfloat>(result);
325 }
326
equals(jlong aHandle,jlong bHandle)327 static jboolean equals(jlong aHandle, jlong bHandle) {
328 const SkMatrix* a = reinterpret_cast<SkMatrix*>(aHandle);
329 const SkMatrix* b = reinterpret_cast<SkMatrix*>(bHandle);
330 return *a == *b;
331 }
332 };
333
334 static const JNINativeMethod methods[] = {
335 {"nGetNativeFinalizer", "()J", (void*) SkMatrixGlue::getNativeFinalizer},
336 {"nCreate","(J)J", (void*) SkMatrixGlue::create},
337
338 // ------- @FastNative below here ---------------
339 {"nMapPoints","(J[FI[FIIZ)V", (void*) SkMatrixGlue::mapPoints},
340 {"nMapRect","(JLandroid/graphics/RectF;Landroid/graphics/RectF;)Z",
341 (void*) SkMatrixGlue::mapRect__RectFRectF},
342 {"nSetRectToRect","(JLandroid/graphics/RectF;Landroid/graphics/RectF;I)Z",
343 (void*) SkMatrixGlue::setRectToRect},
344 {"nSetPolyToPoly","(J[FI[FII)Z", (void*) SkMatrixGlue::setPolyToPoly},
345 {"nGetValues","(J[F)V", (void*) SkMatrixGlue::getValues},
346 {"nSetValues","(J[F)V", (void*) SkMatrixGlue::setValues},
347
348 // ------- @CriticalNative below here ---------------
349 {"nIsIdentity","(J)Z", (void*) SkMatrixGlue::isIdentity},
350 {"nIsAffine","(J)Z", (void*) SkMatrixGlue::isAffine},
351 {"nRectStaysRect","(J)Z", (void*) SkMatrixGlue::rectStaysRect},
352 {"nReset","(J)V", (void*) SkMatrixGlue::reset},
353 {"nSet","(JJ)V", (void*) SkMatrixGlue::set},
354 {"nSetTranslate","(JFF)V", (void*) SkMatrixGlue::setTranslate},
355 {"nSetScale","(JFFFF)V", (void*) SkMatrixGlue::setScale__FFFF},
356 {"nSetScale","(JFF)V", (void*) SkMatrixGlue::setScale__FF},
357 {"nSetRotate","(JFFF)V", (void*) SkMatrixGlue::setRotate__FFF},
358 {"nSetRotate","(JF)V", (void*) SkMatrixGlue::setRotate__F},
359 {"nSetSinCos","(JFFFF)V", (void*) SkMatrixGlue::setSinCos__FFFF},
360 {"nSetSinCos","(JFF)V", (void*) SkMatrixGlue::setSinCos__FF},
361 {"nSetSkew","(JFFFF)V", (void*) SkMatrixGlue::setSkew__FFFF},
362 {"nSetSkew","(JFF)V", (void*) SkMatrixGlue::setSkew__FF},
363 {"nSetConcat","(JJJ)V", (void*) SkMatrixGlue::setConcat},
364 {"nPreTranslate","(JFF)V", (void*) SkMatrixGlue::preTranslate},
365 {"nPreScale","(JFFFF)V", (void*) SkMatrixGlue::preScale__FFFF},
366 {"nPreScale","(JFF)V", (void*) SkMatrixGlue::preScale__FF},
367 {"nPreRotate","(JFFF)V", (void*) SkMatrixGlue::preRotate__FFF},
368 {"nPreRotate","(JF)V", (void*) SkMatrixGlue::preRotate__F},
369 {"nPreSkew","(JFFFF)V", (void*) SkMatrixGlue::preSkew__FFFF},
370 {"nPreSkew","(JFF)V", (void*) SkMatrixGlue::preSkew__FF},
371 {"nPreConcat","(JJ)V", (void*) SkMatrixGlue::preConcat},
372 {"nPostTranslate","(JFF)V", (void*) SkMatrixGlue::postTranslate},
373 {"nPostScale","(JFFFF)V", (void*) SkMatrixGlue::postScale__FFFF},
374 {"nPostScale","(JFF)V", (void*) SkMatrixGlue::postScale__FF},
375 {"nPostRotate","(JFFF)V", (void*) SkMatrixGlue::postRotate__FFF},
376 {"nPostRotate","(JF)V", (void*) SkMatrixGlue::postRotate__F},
377 {"nPostSkew","(JFFFF)V", (void*) SkMatrixGlue::postSkew__FFFF},
378 {"nPostSkew","(JFF)V", (void*) SkMatrixGlue::postSkew__FF},
379 {"nPostConcat","(JJ)V", (void*) SkMatrixGlue::postConcat},
380 {"nInvert","(JJ)Z", (void*) SkMatrixGlue::invert},
381 {"nMapRadius","(JF)F", (void*) SkMatrixGlue::mapRadius},
382 {"nEquals", "(JJ)Z", (void*) SkMatrixGlue::equals}
383 };
384
385 static jfieldID sNativeInstanceField;
386
register_android_graphics_Matrix(JNIEnv * env)387 int register_android_graphics_Matrix(JNIEnv* env) {
388 int result = RegisterMethodsOrDie(env, "android/graphics/Matrix", methods, NELEM(methods));
389
390 jclass clazz = FindClassOrDie(env, "android/graphics/Matrix");
391 sNativeInstanceField = GetFieldIDOrDie(env, clazz, "native_instance", "J");
392
393 return result;
394 }
395
android_graphics_Matrix_getSkMatrix(JNIEnv * env,jobject matrixObj)396 SkMatrix* android_graphics_Matrix_getSkMatrix(JNIEnv* env, jobject matrixObj) {
397 return reinterpret_cast<SkMatrix*>(env->GetLongField(matrixObj, sNativeInstanceField));
398 }
399
400 }
401