Matrix.cpp revision 27f0b17d853d8bef918c3d869044e50cf3904ee3
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 "jni.h" 19#include "GraphicsJNI.h" 20#include <android_runtime/AndroidRuntime.h> 21 22#include "SkMatrix.h" 23#include "SkTemplates.h" 24 25#include "Matrix.h" 26 27#include <Caches.h> 28 29namespace android { 30 31class SkMatrixGlue { 32public: 33 34 static void finalizer(JNIEnv* env, jobject clazz, SkMatrix* obj) { 35#ifdef USE_OPENGL_RENDERER 36 if (android::uirenderer::Caches::hasInstance()) { 37 android::uirenderer::Caches::getInstance().resourceCache.destructor(obj); 38 return; 39 } 40#endif // USE_OPENGL_RENDERER 41 delete obj; 42 } 43 44 static SkMatrix* create(JNIEnv* env, jobject clazz, const SkMatrix* src) { 45 SkMatrix* obj = new SkMatrix(); 46 if (src) 47 *obj = *src; 48 else 49 obj->reset(); 50 return obj; 51 } 52 53 static jboolean isIdentity(JNIEnv* env, jobject clazz, SkMatrix* obj) { 54 return obj->isIdentity(); 55 } 56 57 static jboolean rectStaysRect(JNIEnv* env, jobject clazz, SkMatrix* obj) { 58 return obj->rectStaysRect(); 59 } 60 61 static void reset(JNIEnv* env, jobject clazz, SkMatrix* obj) { 62 obj->reset(); 63 } 64 65 static void set(JNIEnv* env, jobject clazz, SkMatrix* obj, SkMatrix* other) { 66 *obj = *other; 67 } 68 69 static void setTranslate(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat dx, jfloat dy) { 70 SkScalar dx_ = SkFloatToScalar(dx); 71 SkScalar dy_ = SkFloatToScalar(dy); 72 obj->setTranslate(dx_, dy_); 73 } 74 75 static void setScale__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy, jfloat px, jfloat py) { 76 SkScalar sx_ = SkFloatToScalar(sx); 77 SkScalar sy_ = SkFloatToScalar(sy); 78 SkScalar px_ = SkFloatToScalar(px); 79 SkScalar py_ = SkFloatToScalar(py); 80 obj->setScale(sx_, sy_, px_, py_); 81 } 82 83 static void setScale__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy) { 84 SkScalar sx_ = SkFloatToScalar(sx); 85 SkScalar sy_ = SkFloatToScalar(sy); 86 obj->setScale(sx_, sy_); 87 } 88 89 static void setRotate__FFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees, jfloat px, jfloat py) { 90 SkScalar degrees_ = SkFloatToScalar(degrees); 91 SkScalar px_ = SkFloatToScalar(px); 92 SkScalar py_ = SkFloatToScalar(py); 93 obj->setRotate(degrees_, px_, py_); 94 } 95 96 static void setRotate__F(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees) { 97 SkScalar degrees_ = SkFloatToScalar(degrees); 98 obj->setRotate(degrees_); 99 } 100 101 static void setSinCos__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sinValue, jfloat cosValue, jfloat px, jfloat py) { 102 SkScalar sinValue_ = SkFloatToScalar(sinValue); 103 SkScalar cosValue_ = SkFloatToScalar(cosValue); 104 SkScalar px_ = SkFloatToScalar(px); 105 SkScalar py_ = SkFloatToScalar(py); 106 obj->setSinCos(sinValue_, cosValue_, px_, py_); 107 } 108 109 static void setSinCos__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sinValue, jfloat cosValue) { 110 SkScalar sinValue_ = SkFloatToScalar(sinValue); 111 SkScalar cosValue_ = SkFloatToScalar(cosValue); 112 obj->setSinCos(sinValue_, cosValue_); 113 } 114 115 static void setSkew__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat kx, jfloat ky, jfloat px, jfloat py) { 116 SkScalar kx_ = SkFloatToScalar(kx); 117 SkScalar ky_ = SkFloatToScalar(ky); 118 SkScalar px_ = SkFloatToScalar(px); 119 SkScalar py_ = SkFloatToScalar(py); 120 obj->setSkew(kx_, ky_, px_, py_); 121 } 122 123 static void setSkew__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat kx, jfloat ky) { 124 SkScalar kx_ = SkFloatToScalar(kx); 125 SkScalar ky_ = SkFloatToScalar(ky); 126 obj->setSkew(kx_, ky_); 127 } 128 129 static jboolean setConcat(JNIEnv* env, jobject clazz, SkMatrix* obj, SkMatrix* a, SkMatrix* b) { 130 return obj->setConcat(*a, *b); 131 } 132 133 static jboolean preTranslate(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat dx, jfloat dy) { 134 SkScalar dx_ = SkFloatToScalar(dx); 135 SkScalar dy_ = SkFloatToScalar(dy); 136 return obj->preTranslate(dx_, dy_); 137 } 138 139 static jboolean preScale__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy, jfloat px, jfloat py) { 140 SkScalar sx_ = SkFloatToScalar(sx); 141 SkScalar sy_ = SkFloatToScalar(sy); 142 SkScalar px_ = SkFloatToScalar(px); 143 SkScalar py_ = SkFloatToScalar(py); 144 return obj->preScale(sx_, sy_, px_, py_); 145 } 146 147 static jboolean preScale__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy) { 148 SkScalar sx_ = SkFloatToScalar(sx); 149 SkScalar sy_ = SkFloatToScalar(sy); 150 return obj->preScale(sx_, sy_); 151 } 152 153 static jboolean preRotate__FFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees, jfloat px, jfloat py) { 154 SkScalar degrees_ = SkFloatToScalar(degrees); 155 SkScalar px_ = SkFloatToScalar(px); 156 SkScalar py_ = SkFloatToScalar(py); 157 return obj->preRotate(degrees_, px_, py_); 158 } 159 160 static jboolean preRotate__F(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees) { 161 SkScalar degrees_ = SkFloatToScalar(degrees); 162 return obj->preRotate(degrees_); 163 } 164 165 static jboolean preSkew__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat kx, jfloat ky, jfloat px, jfloat py) { 166 SkScalar kx_ = SkFloatToScalar(kx); 167 SkScalar ky_ = SkFloatToScalar(ky); 168 SkScalar px_ = SkFloatToScalar(px); 169 SkScalar py_ = SkFloatToScalar(py); 170 return obj->preSkew(kx_, ky_, px_, py_); 171 } 172 173 static jboolean preSkew__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat kx, jfloat ky) { 174 SkScalar kx_ = SkFloatToScalar(kx); 175 SkScalar ky_ = SkFloatToScalar(ky); 176 return obj->preSkew(kx_, ky_); 177 } 178 179 static jboolean preConcat(JNIEnv* env, jobject clazz, SkMatrix* obj, SkMatrix* other) { 180 return obj->preConcat(*other); 181 } 182 183 static jboolean postTranslate(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat dx, jfloat dy) { 184 SkScalar dx_ = SkFloatToScalar(dx); 185 SkScalar dy_ = SkFloatToScalar(dy); 186 return obj->postTranslate(dx_, dy_); 187 } 188 189 static jboolean postScale__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy, jfloat px, jfloat py) { 190 SkScalar sx_ = SkFloatToScalar(sx); 191 SkScalar sy_ = SkFloatToScalar(sy); 192 SkScalar px_ = SkFloatToScalar(px); 193 SkScalar py_ = SkFloatToScalar(py); 194 return obj->postScale(sx_, sy_, px_, py_); 195 } 196 197 static jboolean postScale__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy) { 198 SkScalar sx_ = SkFloatToScalar(sx); 199 SkScalar sy_ = SkFloatToScalar(sy); 200 return obj->postScale(sx_, sy_); 201 } 202 203 static jboolean postRotate__FFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees, jfloat px, jfloat py) { 204 SkScalar degrees_ = SkFloatToScalar(degrees); 205 SkScalar px_ = SkFloatToScalar(px); 206 SkScalar py_ = SkFloatToScalar(py); 207 return obj->postRotate(degrees_, px_, py_); 208 } 209 210 static jboolean postRotate__F(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees) { 211 SkScalar degrees_ = SkFloatToScalar(degrees); 212 return obj->postRotate(degrees_); 213 } 214 215 static jboolean postSkew__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat kx, jfloat ky, jfloat px, jfloat py) { 216 SkScalar kx_ = SkFloatToScalar(kx); 217 SkScalar ky_ = SkFloatToScalar(ky); 218 SkScalar px_ = SkFloatToScalar(px); 219 SkScalar py_ = SkFloatToScalar(py); 220 return obj->postSkew(kx_, ky_, px_, py_); 221 } 222 223 static jboolean postSkew__FF(JNIEnv* env, jobject clazz, SkMatrix* matrix, jfloat kx, jfloat ky) { 224 SkScalar kx_ = SkFloatToScalar(kx); 225 SkScalar ky_ = SkFloatToScalar(ky); 226 return matrix->postSkew(kx_, ky_); 227 } 228 229 static jboolean postConcat(JNIEnv* env, jobject clazz, SkMatrix* matrix, SkMatrix* other) { 230 return matrix->postConcat(*other); 231 } 232 233 static jboolean setRectToRect(JNIEnv* env, jobject clazz, SkMatrix* matrix, jobject src, jobject dst, SkMatrix::ScaleToFit stf) { 234 SkRect src_; 235 GraphicsJNI::jrectf_to_rect(env, src, &src_); 236 SkRect dst_; 237 GraphicsJNI::jrectf_to_rect(env, dst, &dst_); 238 return matrix->setRectToRect(src_, dst_, stf); 239 } 240 241 static jboolean setPolyToPoly(JNIEnv* env, jobject clazz, SkMatrix* matrix, 242 jfloatArray jsrc, int srcIndex, 243 jfloatArray jdst, int dstIndex, int ptCount) { 244 SkASSERT(srcIndex >= 0); 245 SkASSERT(dstIndex >= 0); 246 SkASSERT((unsigned)ptCount <= 4); 247 248 AutoJavaFloatArray autoSrc(env, jsrc, srcIndex + (ptCount << 1)); 249 AutoJavaFloatArray autoDst(env, jdst, dstIndex + (ptCount << 1)); 250 float* src = autoSrc.ptr() + srcIndex; 251 float* dst = autoDst.ptr() + dstIndex; 252 253#ifdef SK_SCALAR_IS_FIXED 254 SkPoint srcPt[4], dstPt[4]; 255 for (int i = 0; i < ptCount; i++) { 256 int x = i << 1; 257 int y = x + 1; 258 srcPt[i].set(SkFloatToScalar(src[x]), SkFloatToScalar(src[y])); 259 dstPt[i].set(SkFloatToScalar(dst[x]), SkFloatToScalar(dst[y])); 260 } 261 return matrix->setPolyToPoly(srcPt, dstPt, ptCount); 262#else 263 return matrix->setPolyToPoly((const SkPoint*)src, (const SkPoint*)dst, 264 ptCount); 265#endif 266 } 267 268 static jboolean invert(JNIEnv* env, jobject clazz, SkMatrix* matrix, SkMatrix* inverse) { 269 return matrix->invert(inverse); 270 } 271 272 static void mapPoints(JNIEnv* env, jobject clazz, SkMatrix* matrix, 273 jfloatArray dst, int dstIndex, 274 jfloatArray src, int srcIndex, 275 int ptCount, bool isPts) { 276 SkASSERT(ptCount >= 0); 277 AutoJavaFloatArray autoSrc(env, src, srcIndex + (ptCount << 1)); 278 AutoJavaFloatArray autoDst(env, dst, dstIndex + (ptCount << 1)); 279 float* srcArray = autoSrc.ptr() + srcIndex; 280 float* dstArray = autoDst.ptr() + dstIndex; 281 282#ifdef SK_SCALAR_IS_FIXED 283 // we allocate twice the count, 1 set for src, 1 for dst 284 SkAutoSTMalloc<32, SkPoint> storage(ptCount * 2); 285 SkPoint* pts = storage.get(); 286 SkPoint* srcPt = pts; 287 SkPoint* dstPt = pts + ptCount; 288 289 int i; 290 for (i = 0; i < ptCount; i++) { 291 srcPt[i].set(SkFloatToScalar(srcArray[i << 1]), 292 SkFloatToScalar(srcArray[(i << 1) + 1])); 293 } 294 295 if (isPts) 296 matrix->mapPoints(dstPt, srcPt, ptCount); 297 else 298 matrix->mapVectors(dstPt, srcPt, ptCount); 299 300 for (i = 0; i < ptCount; i++) { 301 dstArray[i << 1] = SkScalarToFloat(dstPt[i].fX); 302 dstArray[(i << 1) + 1] = SkScalarToFloat(dstPt[i].fY); 303 } 304#else 305 if (isPts) 306 matrix->mapPoints((SkPoint*)dstArray, (const SkPoint*)srcArray, 307 ptCount); 308 else 309 matrix->mapVectors((SkVector*)dstArray, (const SkVector*)srcArray, 310 ptCount); 311#endif 312 } 313 314 static jboolean mapRect__RectFRectF(JNIEnv* env, jobject clazz, SkMatrix* matrix, jobjectArray dst, jobject src) { 315 SkRect dst_, src_; 316 GraphicsJNI::jrectf_to_rect(env, src, &src_); 317 jboolean rectStaysRect = matrix->mapRect(&dst_, src_); 318 GraphicsJNI::rect_to_jrectf(dst_, env, dst); 319 return rectStaysRect; 320 } 321 322 static jfloat mapRadius(JNIEnv* env, jobject clazz, SkMatrix* matrix, jfloat radius) { 323 return SkScalarToFloat(matrix->mapRadius(SkFloatToScalar(radius))); 324 } 325 326 static void getValues(JNIEnv* env, jobject clazz, SkMatrix* matrix, jfloatArray values) { 327 AutoJavaFloatArray autoValues(env, values, 9); 328 float* dst = autoValues.ptr(); 329 330#ifdef SK_SCALAR_IS_FIXED 331 for (int i = 0; i < 6; i++) { 332 dst[i] = SkFixedToFloat(matrix->get(i)); 333 } 334 for (int j = 6; j < 9; j++) { 335 dst[j] = SkFractToFloat(matrix->get(j)); 336 } 337#else 338 for (int i = 0; i < 9; i++) { 339 dst[i] = matrix->get(i); 340 } 341#endif 342 } 343 344 static void setValues(JNIEnv* env, jobject clazz, SkMatrix* matrix, jfloatArray values) { 345 AutoJavaFloatArray autoValues(env, values, 9); 346 const float* src = autoValues.ptr(); 347 348#ifdef SK_SCALAR_IS_FIXED 349 for (int i = 0; i < 6; i++) { 350 matrix->set(i, SkFloatToFixed(src[i])); 351 } 352 for (int j = 6; j < 9; j++) { 353 matrix->set(j, SkFloatToFract(src[j])); 354 } 355#else 356 for (int i = 0; i < 9; i++) { 357 matrix->set(i, src[i]); 358 } 359#endif 360 } 361 362 static jboolean equals(JNIEnv* env, jobject clazz, const SkMatrix* a, const SkMatrix* b) { 363 return *a == *b; 364 } 365 }; 366 367static JNINativeMethod methods[] = { 368 {"finalizer", "(I)V", (void*) SkMatrixGlue::finalizer}, 369 {"native_create","(I)I", (void*) SkMatrixGlue::create}, 370 {"native_isIdentity","(I)Z", (void*) SkMatrixGlue::isIdentity}, 371 {"native_rectStaysRect","(I)Z", (void*) SkMatrixGlue::rectStaysRect}, 372 {"native_reset","(I)V", (void*) SkMatrixGlue::reset}, 373 {"native_set","(II)V", (void*) SkMatrixGlue::set}, 374 {"native_setTranslate","(IFF)V", (void*) SkMatrixGlue::setTranslate}, 375 {"native_setScale","(IFFFF)V", (void*) SkMatrixGlue::setScale__FFFF}, 376 {"native_setScale","(IFF)V", (void*) SkMatrixGlue::setScale__FF}, 377 {"native_setRotate","(IFFF)V", (void*) SkMatrixGlue::setRotate__FFF}, 378 {"native_setRotate","(IF)V", (void*) SkMatrixGlue::setRotate__F}, 379 {"native_setSinCos","(IFFFF)V", (void*) SkMatrixGlue::setSinCos__FFFF}, 380 {"native_setSinCos","(IFF)V", (void*) SkMatrixGlue::setSinCos__FF}, 381 {"native_setSkew","(IFFFF)V", (void*) SkMatrixGlue::setSkew__FFFF}, 382 {"native_setSkew","(IFF)V", (void*) SkMatrixGlue::setSkew__FF}, 383 {"native_setConcat","(III)Z", (void*) SkMatrixGlue::setConcat}, 384 {"native_preTranslate","(IFF)Z", (void*) SkMatrixGlue::preTranslate}, 385 {"native_preScale","(IFFFF)Z", (void*) SkMatrixGlue::preScale__FFFF}, 386 {"native_preScale","(IFF)Z", (void*) SkMatrixGlue::preScale__FF}, 387 {"native_preRotate","(IFFF)Z", (void*) SkMatrixGlue::preRotate__FFF}, 388 {"native_preRotate","(IF)Z", (void*) SkMatrixGlue::preRotate__F}, 389 {"native_preSkew","(IFFFF)Z", (void*) SkMatrixGlue::preSkew__FFFF}, 390 {"native_preSkew","(IFF)Z", (void*) SkMatrixGlue::preSkew__FF}, 391 {"native_preConcat","(II)Z", (void*) SkMatrixGlue::preConcat}, 392 {"native_postTranslate","(IFF)Z", (void*) SkMatrixGlue::postTranslate}, 393 {"native_postScale","(IFFFF)Z", (void*) SkMatrixGlue::postScale__FFFF}, 394 {"native_postScale","(IFF)Z", (void*) SkMatrixGlue::postScale__FF}, 395 {"native_postRotate","(IFFF)Z", (void*) SkMatrixGlue::postRotate__FFF}, 396 {"native_postRotate","(IF)Z", (void*) SkMatrixGlue::postRotate__F}, 397 {"native_postSkew","(IFFFF)Z", (void*) SkMatrixGlue::postSkew__FFFF}, 398 {"native_postSkew","(IFF)Z", (void*) SkMatrixGlue::postSkew__FF}, 399 {"native_postConcat","(II)Z", (void*) SkMatrixGlue::postConcat}, 400 {"native_setRectToRect","(ILandroid/graphics/RectF;Landroid/graphics/RectF;I)Z", (void*) SkMatrixGlue::setRectToRect}, 401 {"native_setPolyToPoly","(I[FI[FII)Z", (void*) SkMatrixGlue::setPolyToPoly}, 402 {"native_invert","(II)Z", (void*) SkMatrixGlue::invert}, 403 {"native_mapPoints","(I[FI[FIIZ)V", (void*) SkMatrixGlue::mapPoints}, 404 {"native_mapRect","(ILandroid/graphics/RectF;Landroid/graphics/RectF;)Z", (void*) SkMatrixGlue::mapRect__RectFRectF}, 405 {"native_mapRadius","(IF)F", (void*) SkMatrixGlue::mapRadius}, 406 {"native_getValues","(I[F)V", (void*) SkMatrixGlue::getValues}, 407 {"native_setValues","(I[F)V", (void*) SkMatrixGlue::setValues}, 408 {"native_equals", "(II)Z", (void*) SkMatrixGlue::equals} 409}; 410 411static jfieldID sNativeInstanceField; 412 413int register_android_graphics_Matrix(JNIEnv* env) { 414 int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Matrix", methods, 415 sizeof(methods) / sizeof(methods[0])); 416 417 jclass clazz = env->FindClass("android/graphics/Matrix"); 418 sNativeInstanceField = env->GetFieldID(clazz, "native_instance", "I"); 419 420 return result; 421} 422 423SkMatrix* android_graphics_Matrix_getSkMatrix(JNIEnv* env, jobject matrixObj) { 424 return reinterpret_cast<SkMatrix*>(env->GetIntField(matrixObj, sNativeInstanceField)); 425} 426 427} 428