Matrix.cpp revision 20e987bfc35d0ae6cb6344ead65ed44ee7cf8750 
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// This file was generated from the C++ include file: SkMatrix.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 <android_runtime/AndroidRuntime.h>
26
27#include "SkMatrix.h"
28#include "SkTemplates.h"
29
30#include "Matrix.h"
31
32namespace android {
33
34class SkMatrixGlue {
35public:
36
37    static void finalizer(JNIEnv* env, jobject clazz, SkMatrix* obj) {
38        delete obj;
39    }
40
41    static SkMatrix* create(JNIEnv* env, jobject clazz, const SkMatrix* src) {
42        SkMatrix* obj = new SkMatrix();
43        if (src)
44            *obj = *src;
45        else
46            obj->reset();
47        return obj;
48    }
49
50    static jboolean isIdentity(JNIEnv* env, jobject clazz, SkMatrix* obj) {
51        return obj->isIdentity();
52    }
53
54    static jboolean rectStaysRect(JNIEnv* env, jobject clazz, SkMatrix* obj) {
55        return obj->rectStaysRect();
56    }
57
58    static void reset(JNIEnv* env, jobject clazz, SkMatrix* obj) {
59        obj->reset();
60    }
61
62    static void set(JNIEnv* env, jobject clazz, SkMatrix* obj, SkMatrix* other) {
63        *obj = *other;
64    }
65
66    static void setTranslate(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat dx, jfloat dy) {
67        SkScalar dx_ = SkFloatToScalar(dx);
68        SkScalar dy_ = SkFloatToScalar(dy);
69        obj->setTranslate(dx_, dy_);
70    }
71
72    static void setScale__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy, jfloat px, jfloat py) {
73        SkScalar sx_ = SkFloatToScalar(sx);
74        SkScalar sy_ = SkFloatToScalar(sy);
75        SkScalar px_ = SkFloatToScalar(px);
76        SkScalar py_ = SkFloatToScalar(py);
77        obj->setScale(sx_, sy_, px_, py_);
78    }
79
80    static void setScale__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy) {
81        SkScalar sx_ = SkFloatToScalar(sx);
82        SkScalar sy_ = SkFloatToScalar(sy);
83        obj->setScale(sx_, sy_);
84    }
85
86    static void setRotate__FFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees, jfloat px, jfloat py) {
87        SkScalar degrees_ = SkFloatToScalar(degrees);
88        SkScalar px_ = SkFloatToScalar(px);
89        SkScalar py_ = SkFloatToScalar(py);
90        obj->setRotate(degrees_, px_, py_);
91    }
92
93    static void setRotate__F(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees) {
94        SkScalar degrees_ = SkFloatToScalar(degrees);
95        obj->setRotate(degrees_);
96    }
97
98    static void setSinCos__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sinValue, jfloat cosValue, jfloat px, jfloat py) {
99        SkScalar sinValue_ = SkFloatToScalar(sinValue);
100        SkScalar cosValue_ = SkFloatToScalar(cosValue);
101        SkScalar px_ = SkFloatToScalar(px);
102        SkScalar py_ = SkFloatToScalar(py);
103        obj->setSinCos(sinValue_, cosValue_, px_, py_);
104    }
105
106    static void setSinCos__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sinValue, jfloat cosValue) {
107        SkScalar sinValue_ = SkFloatToScalar(sinValue);
108        SkScalar cosValue_ = SkFloatToScalar(cosValue);
109        obj->setSinCos(sinValue_, cosValue_);
110    }
111
112    static void setSkew__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat kx, jfloat ky, jfloat px, jfloat py) {
113        SkScalar kx_ = SkFloatToScalar(kx);
114        SkScalar ky_ = SkFloatToScalar(ky);
115        SkScalar px_ = SkFloatToScalar(px);
116        SkScalar py_ = SkFloatToScalar(py);
117        obj->setSkew(kx_, ky_, px_, py_);
118    }
119
120    static void setSkew__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat kx, jfloat ky) {
121        SkScalar kx_ = SkFloatToScalar(kx);
122        SkScalar ky_ = SkFloatToScalar(ky);
123        obj->setSkew(kx_, ky_);
124    }
125
126    static jboolean setConcat(JNIEnv* env, jobject clazz, SkMatrix* obj, SkMatrix* a, SkMatrix* b) {
127        return obj->setConcat(*a, *b);
128    }
129
130    static jboolean preTranslate(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat dx, jfloat dy) {
131        SkScalar dx_ = SkFloatToScalar(dx);
132        SkScalar dy_ = SkFloatToScalar(dy);
133        return obj->preTranslate(dx_, dy_);
134    }
135
136    static jboolean preScale__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy, jfloat px, jfloat py) {
137        SkScalar sx_ = SkFloatToScalar(sx);
138        SkScalar sy_ = SkFloatToScalar(sy);
139        SkScalar px_ = SkFloatToScalar(px);
140        SkScalar py_ = SkFloatToScalar(py);
141        return obj->preScale(sx_, sy_, px_, py_);
142    }
143
144    static jboolean preScale__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy) {
145        SkScalar sx_ = SkFloatToScalar(sx);
146        SkScalar sy_ = SkFloatToScalar(sy);
147        return obj->preScale(sx_, sy_);
148    }
149
150    static jboolean preRotate__FFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees, jfloat px, jfloat py) {
151        SkScalar degrees_ = SkFloatToScalar(degrees);
152        SkScalar px_ = SkFloatToScalar(px);
153        SkScalar py_ = SkFloatToScalar(py);
154        return obj->preRotate(degrees_, px_, py_);
155    }
156
157    static jboolean preRotate__F(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees) {
158        SkScalar degrees_ = SkFloatToScalar(degrees);
159        return obj->preRotate(degrees_);
160    }
161
162    static jboolean preSkew__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat kx, jfloat ky, jfloat px, jfloat py) {
163        SkScalar kx_ = SkFloatToScalar(kx);
164        SkScalar ky_ = SkFloatToScalar(ky);
165        SkScalar px_ = SkFloatToScalar(px);
166        SkScalar py_ = SkFloatToScalar(py);
167        return obj->preSkew(kx_, ky_, px_, py_);
168    }
169
170    static jboolean preSkew__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat kx, jfloat ky) {
171        SkScalar kx_ = SkFloatToScalar(kx);
172        SkScalar ky_ = SkFloatToScalar(ky);
173        return obj->preSkew(kx_, ky_);
174    }
175
176    static jboolean preConcat(JNIEnv* env, jobject clazz, SkMatrix* obj, SkMatrix* other) {
177        return obj->preConcat(*other);
178    }
179
180    static jboolean postTranslate(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat dx, jfloat dy) {
181        SkScalar dx_ = SkFloatToScalar(dx);
182        SkScalar dy_ = SkFloatToScalar(dy);
183        return obj->postTranslate(dx_, dy_);
184    }
185
186    static jboolean postScale__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy, jfloat px, jfloat py) {
187        SkScalar sx_ = SkFloatToScalar(sx);
188        SkScalar sy_ = SkFloatToScalar(sy);
189        SkScalar px_ = SkFloatToScalar(px);
190        SkScalar py_ = SkFloatToScalar(py);
191        return obj->postScale(sx_, sy_, px_, py_);
192    }
193
194    static jboolean postScale__FF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat sx, jfloat sy) {
195        SkScalar sx_ = SkFloatToScalar(sx);
196        SkScalar sy_ = SkFloatToScalar(sy);
197        return obj->postScale(sx_, sy_);
198    }
199
200    static jboolean postRotate__FFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees, jfloat px, jfloat py) {
201        SkScalar degrees_ = SkFloatToScalar(degrees);
202        SkScalar px_ = SkFloatToScalar(px);
203        SkScalar py_ = SkFloatToScalar(py);
204        return obj->postRotate(degrees_, px_, py_);
205    }
206
207    static jboolean postRotate__F(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat degrees) {
208        SkScalar degrees_ = SkFloatToScalar(degrees);
209        return obj->postRotate(degrees_);
210    }
211
212    static jboolean postSkew__FFFF(JNIEnv* env, jobject clazz, SkMatrix* obj, jfloat kx, jfloat ky, jfloat px, jfloat py) {
213        SkScalar kx_ = SkFloatToScalar(kx);
214        SkScalar ky_ = SkFloatToScalar(ky);
215        SkScalar px_ = SkFloatToScalar(px);
216        SkScalar py_ = SkFloatToScalar(py);
217        return obj->postSkew(kx_, ky_, px_, py_);
218    }
219
220    static jboolean postSkew__FF(JNIEnv* env, jobject clazz, SkMatrix* matrix, jfloat kx, jfloat ky) {
221        SkScalar kx_ = SkFloatToScalar(kx);
222        SkScalar ky_ = SkFloatToScalar(ky);
223        return matrix->postSkew(kx_, ky_);
224    }
225
226    static jboolean postConcat(JNIEnv* env, jobject clazz, SkMatrix* matrix, SkMatrix* other) {
227        return matrix->postConcat(*other);
228    }
229
230    static jboolean setRectToRect(JNIEnv* env, jobject clazz, SkMatrix* matrix, jobject src, jobject dst, SkMatrix::ScaleToFit stf) {
231        SkRect src_;
232        GraphicsJNI::jrectf_to_rect(env, src, &src_);
233        SkRect dst_;
234        GraphicsJNI::jrectf_to_rect(env, dst, &dst_);
235        return matrix->setRectToRect(src_, dst_, stf);
236    }
237
238    static jboolean setPolyToPoly(JNIEnv* env, jobject clazz, SkMatrix* matrix,
239                                  jfloatArray jsrc, int srcIndex,
240                                  jfloatArray jdst, int dstIndex, int ptCount) {
241        SkASSERT(srcIndex >= 0);
242        SkASSERT(dstIndex >= 0);
243        SkASSERT((unsigned)ptCount <= 4);
244
245        AutoJavaFloatArray autoSrc(env, jsrc, srcIndex + (ptCount << 1));
246        AutoJavaFloatArray autoDst(env, jdst, dstIndex + (ptCount << 1));
247        float* src = autoSrc.ptr() + srcIndex;
248        float* dst = autoDst.ptr() + dstIndex;
249
250#ifdef SK_SCALAR_IS_FIXED
251        SkPoint srcPt[4], dstPt[4];
252        for (int i = 0; i < ptCount; i++) {
253            int x = i << 1;
254            int y = x + 1;
255            srcPt[i].set(SkFloatToScalar(src[x]), SkFloatToScalar(src[y]));
256            dstPt[i].set(SkFloatToScalar(dst[x]), SkFloatToScalar(dst[y]));
257        }
258        return matrix->setPolyToPoly(srcPt, dstPt, ptCount);
259#else
260        return matrix->setPolyToPoly((const SkPoint*)src, (const SkPoint*)dst,
261                                     ptCount);
262#endif
263    }
264
265    static jboolean invert(JNIEnv* env, jobject clazz, SkMatrix* matrix, SkMatrix* inverse) {
266        return matrix->invert(inverse);
267    }
268
269    static void mapPoints(JNIEnv* env, jobject clazz, SkMatrix* matrix,
270                              jfloatArray dst, int dstIndex,
271                              jfloatArray src, int srcIndex,
272                              int ptCount, bool isPts) {
273        SkASSERT(ptCount >= 0);
274        AutoJavaFloatArray autoSrc(env, src, srcIndex + (ptCount << 1));
275        AutoJavaFloatArray autoDst(env, dst, dstIndex + (ptCount << 1));
276        float* srcArray = autoSrc.ptr() + srcIndex;
277        float* dstArray = autoDst.ptr() + dstIndex;
278
279#ifdef SK_SCALAR_IS_FIXED
280        // we allocate twice the count, 1 set for src, 1 for dst
281        SkAutoSTMalloc<32, SkPoint> storage(ptCount * 2);
282        SkPoint* pts = storage.get();
283        SkPoint* srcPt = pts;
284        SkPoint* dstPt = pts + ptCount;
285
286        int i;
287        for (i = 0; i < ptCount; i++) {
288            srcPt[i].set(SkFloatToScalar(srcArray[i << 1]),
289                         SkFloatToScalar(srcArray[(i << 1) + 1]));
290        }
291
292        if (isPts)
293            matrix->mapPoints(dstPt, srcPt, ptCount);
294        else
295            matrix->mapVectors(dstPt, srcPt, ptCount);
296
297        for (i = 0; i < ptCount; i++) {
298            dstArray[i << 1]  = SkScalarToFloat(dstPt[i].fX);
299            dstArray[(i << 1) + 1]  = SkScalarToFloat(dstPt[i].fY);
300        }
301#else
302        if (isPts)
303            matrix->mapPoints((SkPoint*)dstArray, (const SkPoint*)srcArray,
304                              ptCount);
305        else
306            matrix->mapVectors((SkVector*)dstArray, (const SkVector*)srcArray,
307                               ptCount);
308#endif
309    }
310
311    static jboolean mapRect__RectFRectF(JNIEnv* env, jobject clazz, SkMatrix* matrix, jobjectArray dst, jobject src) {
312        SkRect dst_, src_;
313        GraphicsJNI::jrectf_to_rect(env, src, &src_);
314        jboolean rectStaysRect = matrix->mapRect(&dst_, src_);
315        GraphicsJNI::rect_to_jrectf(dst_, env, dst);
316        return rectStaysRect;
317    }
318
319    static jfloat mapRadius(JNIEnv* env, jobject clazz, SkMatrix* matrix, jfloat radius) {
320        return SkScalarToFloat(matrix->mapRadius(SkFloatToScalar(radius)));
321    }
322
323    static void getValues(JNIEnv* env, jobject clazz, SkMatrix* matrix, jfloatArray values) {
324        AutoJavaFloatArray autoValues(env, values, 9);
325        float* dst = autoValues.ptr();
326
327#ifdef SK_SCALAR_IS_FIXED
328        for (int i = 0; i < 6; i++) {
329            dst[i] = SkFixedToFloat(matrix->get(i));
330        }
331        for (int j = 6; j < 9; j++) {
332            dst[j] = SkFractToFloat(matrix->get(j));
333        }
334#else
335        for (int i = 0; i < 9; i++) {
336            dst[i] = matrix->get(i);
337        }
338#endif
339    }
340
341    static void setValues(JNIEnv* env, jobject clazz, SkMatrix* matrix, jfloatArray values) {
342        AutoJavaFloatArray autoValues(env, values, 9);
343        const float* src = autoValues.ptr();
344
345#ifdef SK_SCALAR_IS_FIXED
346        for (int i = 0; i < 6; i++) {
347            matrix->set(i, SkFloatToFixed(src[i]));
348        }
349        for (int j = 6; j < 9; j++) {
350            matrix->set(j, SkFloatToFract(src[j]));
351        }
352#else
353        for (int i = 0; i < 9; i++) {
354            matrix->set(i, src[i]);
355        }
356#endif
357    }
358
359    static jboolean equals(JNIEnv* env, jobject clazz, const SkMatrix* a, const SkMatrix* b) {
360        return *a == *b;
361    }
362 };
363
364static JNINativeMethod methods[] = {
365    {"finalizer", "(I)V", (void*) SkMatrixGlue::finalizer},
366    {"native_create","(I)I", (void*) SkMatrixGlue::create},
367    {"native_isIdentity","(I)Z", (void*) SkMatrixGlue::isIdentity},
368    {"native_rectStaysRect","(I)Z", (void*) SkMatrixGlue::rectStaysRect},
369    {"native_reset","(I)V", (void*) SkMatrixGlue::reset},
370    {"native_set","(II)V", (void*) SkMatrixGlue::set},
371    {"native_setTranslate","(IFF)V", (void*) SkMatrixGlue::setTranslate},
372    {"native_setScale","(IFFFF)V", (void*) SkMatrixGlue::setScale__FFFF},
373    {"native_setScale","(IFF)V", (void*) SkMatrixGlue::setScale__FF},
374    {"native_setRotate","(IFFF)V", (void*) SkMatrixGlue::setRotate__FFF},
375    {"native_setRotate","(IF)V", (void*) SkMatrixGlue::setRotate__F},
376    {"native_setSinCos","(IFFFF)V", (void*) SkMatrixGlue::setSinCos__FFFF},
377    {"native_setSinCos","(IFF)V", (void*) SkMatrixGlue::setSinCos__FF},
378    {"native_setSkew","(IFFFF)V", (void*) SkMatrixGlue::setSkew__FFFF},
379    {"native_setSkew","(IFF)V", (void*) SkMatrixGlue::setSkew__FF},
380    {"native_setConcat","(III)Z", (void*) SkMatrixGlue::setConcat},
381    {"native_preTranslate","(IFF)Z", (void*) SkMatrixGlue::preTranslate},
382    {"native_preScale","(IFFFF)Z", (void*) SkMatrixGlue::preScale__FFFF},
383    {"native_preScale","(IFF)Z", (void*) SkMatrixGlue::preScale__FF},
384    {"native_preRotate","(IFFF)Z", (void*) SkMatrixGlue::preRotate__FFF},
385    {"native_preRotate","(IF)Z", (void*) SkMatrixGlue::preRotate__F},
386    {"native_preSkew","(IFFFF)Z", (void*) SkMatrixGlue::preSkew__FFFF},
387    {"native_preSkew","(IFF)Z", (void*) SkMatrixGlue::preSkew__FF},
388    {"native_preConcat","(II)Z", (void*) SkMatrixGlue::preConcat},
389    {"native_postTranslate","(IFF)Z", (void*) SkMatrixGlue::postTranslate},
390    {"native_postScale","(IFFFF)Z", (void*) SkMatrixGlue::postScale__FFFF},
391    {"native_postScale","(IFF)Z", (void*) SkMatrixGlue::postScale__FF},
392    {"native_postRotate","(IFFF)Z", (void*) SkMatrixGlue::postRotate__FFF},
393    {"native_postRotate","(IF)Z", (void*) SkMatrixGlue::postRotate__F},
394    {"native_postSkew","(IFFFF)Z", (void*) SkMatrixGlue::postSkew__FFFF},
395    {"native_postSkew","(IFF)Z", (void*) SkMatrixGlue::postSkew__FF},
396    {"native_postConcat","(II)Z", (void*) SkMatrixGlue::postConcat},
397    {"native_setRectToRect","(ILandroid/graphics/RectF;Landroid/graphics/RectF;I)Z", (void*) SkMatrixGlue::setRectToRect},
398    {"native_setPolyToPoly","(I[FI[FII)Z", (void*) SkMatrixGlue::setPolyToPoly},
399    {"native_invert","(II)Z", (void*) SkMatrixGlue::invert},
400    {"native_mapPoints","(I[FI[FIIZ)V", (void*) SkMatrixGlue::mapPoints},
401    {"native_mapRect","(ILandroid/graphics/RectF;Landroid/graphics/RectF;)Z", (void*) SkMatrixGlue::mapRect__RectFRectF},
402    {"native_mapRadius","(IF)F", (void*) SkMatrixGlue::mapRadius},
403    {"native_getValues","(I[F)V", (void*) SkMatrixGlue::getValues},
404    {"native_setValues","(I[F)V", (void*) SkMatrixGlue::setValues},
405    {"native_equals", "(II)Z", (void*) SkMatrixGlue::equals}
406};
407
408static jfieldID sNativeInstanceField;
409
410int register_android_graphics_Matrix(JNIEnv* env) {
411    int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Matrix", methods,
412        sizeof(methods) / sizeof(methods[0]));
413
414    jclass clazz = env->FindClass("android/graphics/Matrix");
415    sNativeInstanceField = env->GetFieldID(clazz, "native_instance", "I");
416
417    return result;
418}
419
420SkMatrix* android_graphics_Matrix_getSkMatrix(JNIEnv* env, jobject matrixObj) {
421    return reinterpret_cast<SkMatrix*>(env->GetIntField(matrixObj, sNativeInstanceField));
422}
423
424}
425