Matrix.cpp revision 2e0103eb340822f9d580c1aa8492bae8394b8243 
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, jlong objHandle) {
35        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
36        delete obj;
37    }
38
39    static jlong create(JNIEnv* env, jobject clazz, jlong srcHandle) {
40        const SkMatrix* src = reinterpret_cast<SkMatrix*>(srcHandle);
41        SkMatrix* obj = new SkMatrix();
42        if (src)
43            *obj = *src;
44        else
45            obj->reset();
46        return reinterpret_cast<jlong>(obj);
47    }
48
49    static jboolean isIdentity(JNIEnv* env, jobject clazz, jlong objHandle) {
50        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
51        return obj->isIdentity() ? JNI_TRUE : JNI_FALSE;
52    }
53    static jboolean rectStaysRect(JNIEnv* env, jobject clazz, jlong objHandle) {
54        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
55        return obj->rectStaysRect() ? JNI_TRUE : JNI_FALSE;
56    }
57    static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
58        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
59        obj->reset();
60    }
61     static void set(JNIEnv* env, jobject clazz, jlong objHandle, jlong otherHandle) {
62        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
63        SkMatrix* other = reinterpret_cast<SkMatrix*>(otherHandle);
64        *obj = *other;
65    }
66     static void setTranslate(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
67        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
68        obj->setTranslate(dx, dy);
69    }
70     static void setScale__FFFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat sx, jfloat sy, jfloat px, jfloat py) {
71        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
72        obj->setScale(sx, sy, px, py);
73    }
74     static void setScale__FF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat sx, jfloat sy) {
75        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
76        obj->setScale(sx, sy);
77    }
78     static void setRotate__FFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat degrees, jfloat px, jfloat py) {
79        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
80        obj->setRotate(degrees, px, py);
81    }
82     static void setRotate__F(JNIEnv* env, jobject clazz, jlong objHandle, jfloat degrees) {
83        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
84        obj->setRotate(degrees);
85    }
86     static void setSinCos__FFFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat sinValue, jfloat cosValue, jfloat px, jfloat py) {
87        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
88        obj->setSinCos(sinValue, cosValue, px, py);
89    }
90     static void setSinCos__FF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat sinValue, jfloat cosValue) {
91        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
92        obj->setSinCos(sinValue, cosValue);
93    }
94     static void setSkew__FFFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat kx, jfloat ky, jfloat px, jfloat py) {
95        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
96        obj->setSkew(kx, ky, px, py);
97    }
98     static void setSkew__FF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat kx, jfloat ky) {
99        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
100        obj->setSkew(kx, ky);
101    }
102     static void setConcat(JNIEnv* env, jobject clazz, jlong objHandle, jlong aHandle, jlong bHandle) {
103        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
104        SkMatrix* a = reinterpret_cast<SkMatrix*>(aHandle);
105        SkMatrix* b = reinterpret_cast<SkMatrix*>(bHandle);
106        obj->setConcat(*a, *b);
107    }
108
109    static void preTranslate(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
110        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
111        obj->preTranslate(dx, dy);
112    }
113
114    static void preScale__FFFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat sx, jfloat sy, jfloat px, jfloat py) {
115        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
116        obj->preScale(sx, sy, px, py);
117    }
118
119    static void preScale__FF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat sx, jfloat sy) {
120        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
121        obj->preScale(sx, sy);
122    }
123
124    static void preRotate__FFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat degrees, jfloat px, jfloat py) {
125        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
126        obj->preRotate(degrees, px, py);
127    }
128
129    static void preRotate__F(JNIEnv* env, jobject clazz, jlong objHandle, jfloat degrees) {
130        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
131        obj->preRotate(degrees);
132    }
133
134    static void preSkew__FFFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat kx, jfloat ky, jfloat px, jfloat py) {
135        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
136        obj->preSkew(kx, ky, px, py);
137    }
138
139    static void preSkew__FF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat kx, jfloat ky) {
140        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
141        obj->preSkew(kx, ky);
142    }
143
144    static void preConcat(JNIEnv* env, jobject clazz, jlong objHandle, jlong otherHandle) {
145        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
146        SkMatrix* other = reinterpret_cast<SkMatrix*>(otherHandle);
147        obj->preConcat(*other);
148    }
149
150    static void postTranslate(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
151        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
152        obj->postTranslate(dx, dy);
153    }
154
155    static void postScale__FFFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat sx, jfloat sy, jfloat px, jfloat py) {
156        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
157        obj->postScale(sx, sy, px, py);
158    }
159
160    static void postScale__FF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat sx, jfloat sy) {
161        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
162        obj->postScale(sx, sy);
163    }
164
165    static void postRotate__FFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat degrees, jfloat px, jfloat py) {
166        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
167        obj->postRotate(degrees, px, py);
168    }
169
170    static void postRotate__F(JNIEnv* env, jobject clazz, jlong objHandle, jfloat degrees) {
171        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
172        obj->postRotate(degrees);
173    }
174
175    static void postSkew__FFFF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat kx, jfloat ky, jfloat px, jfloat py) {
176        SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
177        obj->postSkew(kx, ky, px, py);
178    }
179
180    static void postSkew__FF(JNIEnv* env, jobject clazz, jlong matrixHandle, jfloat kx, jfloat ky) {
181        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
182        matrix->postSkew(kx, ky);
183    }
184
185    static void postConcat(JNIEnv* env, jobject clazz, jlong matrixHandle, jlong otherHandle) {
186        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
187        SkMatrix* other = reinterpret_cast<SkMatrix*>(otherHandle);
188        matrix->postConcat(*other);
189    }
190
191    static jboolean setRectToRect(JNIEnv* env, jobject clazz, jlong matrixHandle, jobject src, jobject dst, jint stfHandle) {
192        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
193        SkMatrix::ScaleToFit stf = static_cast<SkMatrix::ScaleToFit>(stfHandle);
194        SkRect src_;
195        GraphicsJNI::jrectf_to_rect(env, src, &src_);
196        SkRect dst_;
197        GraphicsJNI::jrectf_to_rect(env, dst, &dst_);
198        return matrix->setRectToRect(src_, dst_, stf) ? JNI_TRUE : JNI_FALSE;
199    }
200
201    static jboolean setPolyToPoly(JNIEnv* env, jobject clazz, jlong matrixHandle,
202                                  jfloatArray jsrc, jint srcIndex,
203                                  jfloatArray jdst, jint dstIndex, jint ptCount) {
204        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
205        SkASSERT(srcIndex >= 0);
206        SkASSERT(dstIndex >= 0);
207        SkASSERT((unsigned)ptCount <= 4);
208
209        AutoJavaFloatArray autoSrc(env, jsrc, srcIndex + (ptCount << 1), kRO_JNIAccess);
210        AutoJavaFloatArray autoDst(env, jdst, dstIndex + (ptCount << 1), kRW_JNIAccess);
211        float* src = autoSrc.ptr() + srcIndex;
212        float* dst = autoDst.ptr() + dstIndex;
213        bool result;
214
215#ifdef SK_SCALAR_IS_FLOAT
216        result = matrix->setPolyToPoly((const SkPoint*)src, (const SkPoint*)dst,
217                                     ptCount);
218#else
219        SkASSERT(false);
220#endif
221        return result ? JNI_TRUE : JNI_FALSE;
222    }
223
224    static jboolean invert(JNIEnv* env, jobject clazz, jlong matrixHandle, jlong inverseHandle) {
225        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
226        SkMatrix* inverse = reinterpret_cast<SkMatrix*>(inverseHandle);
227        return matrix->invert(inverse);
228    }
229
230    static void mapPoints(JNIEnv* env, jobject clazz, jlong matrixHandle,
231                              jfloatArray dst, jint dstIndex,
232                              jfloatArray src, jint srcIndex,
233                              jint ptCount, jboolean isPts) {
234        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
235        SkASSERT(ptCount >= 0);
236        AutoJavaFloatArray autoSrc(env, src, srcIndex + (ptCount << 1), kRO_JNIAccess);
237        AutoJavaFloatArray autoDst(env, dst, dstIndex + (ptCount << 1), kRW_JNIAccess);
238        float* srcArray = autoSrc.ptr() + srcIndex;
239        float* dstArray = autoDst.ptr() + dstIndex;
240#ifdef SK_SCALAR_IS_FLOAT
241        if (isPts)
242            matrix->mapPoints((SkPoint*)dstArray, (const SkPoint*)srcArray,
243                              ptCount);
244        else
245            matrix->mapVectors((SkVector*)dstArray, (const SkVector*)srcArray,
246                               ptCount);
247#else
248        SkASSERT(false);
249#endif
250    }
251
252    static jboolean mapRect__RectFRectF(JNIEnv* env, jobject clazz, jlong matrixHandle, jobjectArray dst, jobject src) {
253        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
254        SkRect dst_, src_;
255        GraphicsJNI::jrectf_to_rect(env, src, &src_);
256        jboolean rectStaysRect = matrix->mapRect(&dst_, src_);
257        GraphicsJNI::rect_to_jrectf(dst_, env, dst);
258        return rectStaysRect ? JNI_TRUE : JNI_FALSE;
259    }
260
261    static jfloat mapRadius(JNIEnv* env, jobject clazz, jlong matrixHandle, jfloat radius) {
262        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
263        float result;
264        result = SkScalarToFloat(matrix->mapRadius(radius));
265        return static_cast<jfloat>(result);
266    }
267    static void getValues(JNIEnv* env, jobject clazz, jlong matrixHandle, jfloatArray values) {
268        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
269        AutoJavaFloatArray autoValues(env, values, 9, kRW_JNIAccess);
270        float* dst = autoValues.ptr();
271#ifdef SK_SCALAR_IS_FLOAT
272        for (int i = 0; i < 9; i++) {
273            dst[i] = matrix->get(i);
274        }
275#else
276        SkASSERT(false);
277#endif
278    }
279
280    static void setValues(JNIEnv* env, jobject clazz, jlong matrixHandle, jfloatArray values) {
281        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
282        AutoJavaFloatArray autoValues(env, values, 9, kRO_JNIAccess);
283        const float* src = autoValues.ptr();
284
285#ifdef SK_SCALAR_IS_FLOAT
286        for (int i = 0; i < 9; i++) {
287            matrix->set(i, src[i]);
288        }
289#else
290        SkASSERT(false);
291#endif
292    }
293
294    static jboolean equals(JNIEnv* env, jobject clazz, jlong aHandle, jlong bHandle) {
295        const SkMatrix* a = reinterpret_cast<SkMatrix*>(aHandle);
296        const SkMatrix* b = reinterpret_cast<SkMatrix*>(bHandle);
297        return *a == *b;
298    }
299 };
300
301static JNINativeMethod methods[] = {
302    {"finalizer", "(J)V", (void*) SkMatrixGlue::finalizer},
303    {"native_create","(J)J", (void*) SkMatrixGlue::create},
304    {"native_isIdentity","(J)Z", (void*) SkMatrixGlue::isIdentity},
305    {"native_rectStaysRect","(J)Z", (void*) SkMatrixGlue::rectStaysRect},
306    {"native_reset","(J)V", (void*) SkMatrixGlue::reset},
307    {"native_set","(JJ)V", (void*) SkMatrixGlue::set},
308    {"native_setTranslate","(JFF)V", (void*) SkMatrixGlue::setTranslate},
309    {"native_setScale","(JFFFF)V", (void*) SkMatrixGlue::setScale__FFFF},
310    {"native_setScale","(JFF)V", (void*) SkMatrixGlue::setScale__FF},
311    {"native_setRotate","(JFFF)V", (void*) SkMatrixGlue::setRotate__FFF},
312    {"native_setRotate","(JF)V", (void*) SkMatrixGlue::setRotate__F},
313    {"native_setSinCos","(JFFFF)V", (void*) SkMatrixGlue::setSinCos__FFFF},
314    {"native_setSinCos","(JFF)V", (void*) SkMatrixGlue::setSinCos__FF},
315    {"native_setSkew","(JFFFF)V", (void*) SkMatrixGlue::setSkew__FFFF},
316    {"native_setSkew","(JFF)V", (void*) SkMatrixGlue::setSkew__FF},
317    {"native_setConcat","(JJJ)V", (void*) SkMatrixGlue::setConcat},
318    {"native_preTranslate","(JFF)V", (void*) SkMatrixGlue::preTranslate},
319    {"native_preScale","(JFFFF)V", (void*) SkMatrixGlue::preScale__FFFF},
320    {"native_preScale","(JFF)V", (void*) SkMatrixGlue::preScale__FF},
321    {"native_preRotate","(JFFF)V", (void*) SkMatrixGlue::preRotate__FFF},
322    {"native_preRotate","(JF)V", (void*) SkMatrixGlue::preRotate__F},
323    {"native_preSkew","(JFFFF)V", (void*) SkMatrixGlue::preSkew__FFFF},
324    {"native_preSkew","(JFF)V", (void*) SkMatrixGlue::preSkew__FF},
325    {"native_preConcat","(JJ)V", (void*) SkMatrixGlue::preConcat},
326    {"native_postTranslate","(JFF)V", (void*) SkMatrixGlue::postTranslate},
327    {"native_postScale","(JFFFF)V", (void*) SkMatrixGlue::postScale__FFFF},
328    {"native_postScale","(JFF)V", (void*) SkMatrixGlue::postScale__FF},
329    {"native_postRotate","(JFFF)V", (void*) SkMatrixGlue::postRotate__FFF},
330    {"native_postRotate","(JF)V", (void*) SkMatrixGlue::postRotate__F},
331    {"native_postSkew","(JFFFF)V", (void*) SkMatrixGlue::postSkew__FFFF},
332    {"native_postSkew","(JFF)V", (void*) SkMatrixGlue::postSkew__FF},
333    {"native_postConcat","(JJ)V", (void*) SkMatrixGlue::postConcat},
334    {"native_setRectToRect","(JLandroid/graphics/RectF;Landroid/graphics/RectF;I)Z", (void*) SkMatrixGlue::setRectToRect},
335    {"native_setPolyToPoly","(J[FI[FII)Z", (void*) SkMatrixGlue::setPolyToPoly},
336    {"native_invert","(JJ)Z", (void*) SkMatrixGlue::invert},
337    {"native_mapPoints","(J[FI[FIIZ)V", (void*) SkMatrixGlue::mapPoints},
338    {"native_mapRect","(JLandroid/graphics/RectF;Landroid/graphics/RectF;)Z", (void*) SkMatrixGlue::mapRect__RectFRectF},
339    {"native_mapRadius","(JF)F", (void*) SkMatrixGlue::mapRadius},
340    {"native_getValues","(J[F)V", (void*) SkMatrixGlue::getValues},
341    {"native_setValues","(J[F)V", (void*) SkMatrixGlue::setValues},
342    {"native_equals", "(JJ)Z", (void*) SkMatrixGlue::equals}
343};
344
345static jfieldID sNativeInstanceField;
346
347int register_android_graphics_Matrix(JNIEnv* env) {
348    int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Matrix", methods,
349        sizeof(methods) / sizeof(methods[0]));
350
351    jclass clazz = env->FindClass("android/graphics/Matrix");
352    sNativeInstanceField = env->GetFieldID(clazz, "native_instance", "J");
353
354    return result;
355}
356
357SkMatrix* android_graphics_Matrix_getSkMatrix(JNIEnv* env, jobject matrixObj) {
358    return reinterpret_cast<SkMatrix*>(env->GetLongField(matrixObj, sNativeInstanceField));
359}
360
361}
362