Paint.cpp revision f013e1afd1e68af5e3b868c26a653bbfb39538f8 
1/* libs/android_runtime/android/graphics/Paint.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: SkPaint.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 "SkBlurDrawLooper.h"
28#include "SkColorFilter.h"
29#include "SkMaskFilter.h"
30#include "SkRasterizer.h"
31#include "SkShader.h"
32#include "SkTypeface.h"
33#include "SkXfermode.h"
34
35namespace android {
36
37struct JMetricsID {
38    jfieldID    top;
39    jfieldID    ascent;
40    jfieldID    descent;
41    jfieldID    bottom;
42    jfieldID    leading;
43};
44
45static jclass   gFontMetrics_class;
46static JMetricsID gFontMetrics_fieldID;
47
48static jclass   gFontMetricsInt_class;
49static JMetricsID gFontMetricsInt_fieldID;
50
51class SkPaintGlue {
52public:
53
54    static void finalizer(JNIEnv* env, jobject clazz, SkPaint* obj) {
55        delete obj;
56    }
57
58    static SkPaint* init(JNIEnv* env, jobject clazz) {
59        SkPaint* obj = new SkPaint();
60        // utf16 is required for java
61        obj->setTextEncoding(SkPaint::kUTF16_TextEncoding);
62        return obj;
63    }
64
65    static SkPaint* intiWithPaint(JNIEnv* env, jobject clazz, SkPaint* paint) {
66        SkPaint* obj = new SkPaint(*paint);
67        return obj;
68    }
69
70    static void reset(JNIEnv* env, jobject clazz, SkPaint* obj) {
71        obj->reset();
72    }
73
74    static void assign(JNIEnv* env, jobject clazz, SkPaint* dst, const SkPaint* src) {
75        *dst = *src;
76    }
77
78    static jint getFlags(JNIEnv* env, jobject paint) {
79        NPE_CHECK_RETURN_ZERO(env, paint);
80        return GraphicsJNI::getNativePaint(env, paint)->getFlags();
81    }
82
83    static void setFlags(JNIEnv* env, jobject paint, jint flags) {
84        NPE_CHECK_RETURN_VOID(env, paint);
85        GraphicsJNI::getNativePaint(env, paint)->setFlags(flags);
86    }
87
88    static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) {
89        NPE_CHECK_RETURN_VOID(env, paint);
90        GraphicsJNI::getNativePaint(env, paint)->setAntiAlias(aa);
91    }
92
93    static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) {
94        NPE_CHECK_RETURN_VOID(env, paint);
95        GraphicsJNI::getNativePaint(env, paint)->setLinearText(linearText);
96    }
97
98    static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) {
99        NPE_CHECK_RETURN_VOID(env, paint);
100        GraphicsJNI::getNativePaint(env, paint)->setSubpixelText(subpixelText);
101    }
102
103    static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) {
104        NPE_CHECK_RETURN_VOID(env, paint);
105        GraphicsJNI::getNativePaint(env, paint)->setUnderlineText(underlineText);
106    }
107
108    static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) {
109        NPE_CHECK_RETURN_VOID(env, paint);
110        GraphicsJNI::getNativePaint(env, paint)->setStrikeThruText(strikeThruText);
111    }
112
113    static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) {
114        NPE_CHECK_RETURN_VOID(env, paint);
115        GraphicsJNI::getNativePaint(env, paint)->setFakeBoldText(fakeBoldText);
116    }
117
118    static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) {
119        NPE_CHECK_RETURN_VOID(env, paint);
120        GraphicsJNI::getNativePaint(env, paint)->setFilterBitmap(filterBitmap);
121    }
122
123    static void setDither(JNIEnv* env, jobject paint, jboolean dither) {
124        NPE_CHECK_RETURN_VOID(env, paint);
125        GraphicsJNI::getNativePaint(env, paint)->setDither(dither);
126    }
127
128    static jint getStyle(JNIEnv* env, jobject clazz, SkPaint* obj) {
129        return obj->getStyle();
130    }
131
132    static void setStyle(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Style style) {
133        obj->setStyle(style);
134    }
135
136    static jint getColor(JNIEnv* env, jobject paint) {
137        NPE_CHECK_RETURN_ZERO(env, paint);
138        return GraphicsJNI::getNativePaint(env, paint)->getColor();
139    }
140
141    static jint getAlpha(JNIEnv* env, jobject paint) {
142        NPE_CHECK_RETURN_ZERO(env, paint);
143        return GraphicsJNI::getNativePaint(env, paint)->getAlpha();
144    }
145
146    static void setColor(JNIEnv* env, jobject paint, jint color) {
147        NPE_CHECK_RETURN_VOID(env, paint);
148        GraphicsJNI::getNativePaint(env, paint)->setColor(color);
149    }
150
151    static void setAlpha(JNIEnv* env, jobject paint, jint a) {
152        NPE_CHECK_RETURN_VOID(env, paint);
153        GraphicsJNI::getNativePaint(env, paint)->setAlpha(a);
154    }
155
156    static jfloat getStrokeWidth(JNIEnv* env, jobject paint) {
157        NPE_CHECK_RETURN_ZERO(env, paint);
158        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeWidth());
159    }
160
161    static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) {
162        NPE_CHECK_RETURN_VOID(env, paint);
163        GraphicsJNI::getNativePaint(env, paint)->setStrokeWidth(SkFloatToScalar(width));
164    }
165
166    static jfloat getStrokeMiter(JNIEnv* env, jobject paint) {
167        NPE_CHECK_RETURN_ZERO(env, paint);
168        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeMiter());
169    }
170
171    static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) {
172        NPE_CHECK_RETURN_VOID(env, paint);
173        GraphicsJNI::getNativePaint(env, paint)->setStrokeMiter(SkFloatToScalar(miter));
174    }
175
176    static jint getStrokeCap(JNIEnv* env, jobject clazz, SkPaint* obj) {
177        return obj->getStrokeCap();
178    }
179
180    static void setStrokeCap(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Cap cap) {
181        obj->setStrokeCap(cap);
182    }
183
184    static jint getStrokeJoin(JNIEnv* env, jobject clazz, SkPaint* obj) {
185        return obj->getStrokeJoin();
186    }
187
188    static void setStrokeJoin(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Join join) {
189        obj->setStrokeJoin(join);
190    }
191
192    static jboolean getFillPath(JNIEnv* env, jobject clazz, SkPaint* obj, SkPath* src, SkPath* dst) {
193        return obj->getFillPath(*src, dst);
194    }
195
196    static SkShader* setShader(JNIEnv* env, jobject clazz, SkPaint* obj, SkShader* shader) {
197        return obj->setShader(shader);
198    }
199
200    static SkColorFilter* setColorFilter(JNIEnv* env, jobject clazz, SkPaint* obj, SkColorFilter* filter) {
201        return obj->setColorFilter(filter);
202    }
203
204    static SkXfermode* setXfermode(JNIEnv* env, jobject clazz, SkPaint* obj, SkXfermode* xfermode) {
205        return obj->setXfermode(xfermode);
206    }
207
208    static SkPathEffect* setPathEffect(JNIEnv* env, jobject clazz, SkPaint* obj, SkPathEffect* effect) {
209        return obj->setPathEffect(effect);
210    }
211
212    static SkMaskFilter* setMaskFilter(JNIEnv* env, jobject clazz, SkPaint* obj, SkMaskFilter* maskfilter) {
213        return obj->setMaskFilter(maskfilter);
214    }
215
216    static SkTypeface* setTypeface(JNIEnv* env, jobject clazz, SkPaint* obj, SkTypeface* typeface) {
217        return obj->setTypeface(typeface);
218    }
219
220    static SkRasterizer* setRasterizer(JNIEnv* env, jobject clazz, SkPaint* obj, SkRasterizer* rasterizer) {
221        return obj->setRasterizer(rasterizer);
222    }
223
224    static jint getTextAlign(JNIEnv* env, jobject clazz, SkPaint* obj) {
225        return obj->getTextAlign();
226    }
227
228    static void setTextAlign(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Align align) {
229        obj->setTextAlign(align);
230    }
231
232    static jfloat getTextSize(JNIEnv* env, jobject paint) {
233        NPE_CHECK_RETURN_ZERO(env, paint);
234        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSize());
235    }
236
237    static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) {
238        NPE_CHECK_RETURN_VOID(env, paint);
239        GraphicsJNI::getNativePaint(env, paint)->setTextSize(SkFloatToScalar(textSize));
240    }
241
242    static jfloat getTextScaleX(JNIEnv* env, jobject paint) {
243        NPE_CHECK_RETURN_ZERO(env, paint);
244        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextScaleX());
245    }
246
247    static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) {
248        NPE_CHECK_RETURN_VOID(env, paint);
249        GraphicsJNI::getNativePaint(env, paint)->setTextScaleX(SkFloatToScalar(scaleX));
250    }
251
252    static jfloat getTextSkewX(JNIEnv* env, jobject paint) {
253        NPE_CHECK_RETURN_ZERO(env, paint);
254        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSkewX());
255    }
256
257    static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) {
258        NPE_CHECK_RETURN_VOID(env, paint);
259        GraphicsJNI::getNativePaint(env, paint)->setTextSkewX(SkFloatToScalar(skewX));
260    }
261
262    static jfloat ascent(JNIEnv* env, jobject paint) {
263        NPE_CHECK_RETURN_ZERO(env, paint);
264        SkPaint::FontMetrics    metrics;
265        (void)GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics);
266        return SkScalarToFloat(metrics.fAscent);
267    }
268
269    static jfloat descent(JNIEnv* env, jobject paint) {
270        NPE_CHECK_RETURN_ZERO(env, paint);
271        SkPaint::FontMetrics    metrics;
272        (void)GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics);
273        return SkScalarToFloat(metrics.fDescent);
274    }
275
276    static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) {
277        NPE_CHECK_RETURN_ZERO(env, paint);
278        SkPaint::FontMetrics metrics;
279        SkScalar             spacing = GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics);
280
281        if (metricsObj) {
282            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
283            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
284            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
285            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
286            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
287            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
288        }
289        return SkScalarToFloat(spacing);
290    }
291
292    static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) {
293        NPE_CHECK_RETURN_ZERO(env, paint);
294        SkPaint::FontMetrics metrics;
295
296        GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics);
297        int ascent = SkScalarRound(metrics.fAscent);
298        int descent = SkScalarRound(metrics.fDescent);
299        int leading = SkScalarRound(metrics.fLeading);
300
301        if (metricsObj) {
302            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
303            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloor(metrics.fTop));
304            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
305            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
306            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeil(metrics.fBottom));
307            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
308        }
309        return descent - ascent + leading;
310    }
311
312    static jfloat measureText_CII(JNIEnv* env, jobject jpaint, jcharArray text, int index, int count) {
313        NPE_CHECK_RETURN_ZERO(env, jpaint);
314        NPE_CHECK_RETURN_ZERO(env, text);
315
316        size_t textLength = env->GetArrayLength(text);
317
318        if ((index | count) < 0 || (size_t)(index + count) > textLength) {
319            doThrow(env, "java/lang/ArrayIndexOutOfBoundsException");
320            return 0;
321        }
322
323        const SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
324        const jchar* textArray = env->GetCharArrayElements(text, NULL);
325        // we double count, since measureText wants a byteLength
326        SkScalar width = paint->measureText(textArray + index, count << 1);
327        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
328                                      JNI_ABORT);
329
330        return SkScalarToFloat(width);
331    }
332
333    static jfloat measureText_StringII(JNIEnv* env, jobject jpaint, jstring text, int start, int end) {
334        NPE_CHECK_RETURN_ZERO(env, jpaint);
335        NPE_CHECK_RETURN_ZERO(env, text);
336
337        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
338        const jchar* textArray = env->GetStringChars(text, NULL);
339        size_t textLength = env->GetStringLength(text);
340
341        int count = end - start;
342        if ((start | count) < 0 || (size_t)count > textLength) {
343            doThrow(env, "java/lang/IndexOutOfBoundsException");
344            return 0;
345        }
346
347        jfloat width = SkScalarToFloat(paint->measureText(textArray + start, count << 1));
348        env->ReleaseStringChars(text, textArray);
349        return width;
350    }
351
352    static jfloat measureText_String(JNIEnv* env, jobject jpaint, jstring text) {
353        NPE_CHECK_RETURN_ZERO(env, jpaint);
354        NPE_CHECK_RETURN_ZERO(env, text);
355
356        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
357        const jchar* textArray = env->GetStringChars(text, NULL);
358        size_t textLength = env->GetStringLength(text);
359
360        jfloat width = SkScalarToFloat(paint->measureText(textArray, textLength << 1));
361        env->ReleaseStringChars(text, textArray);
362        return width;
363    }
364
365    static int dotextwidths(JNIEnv* env, SkPaint* paint, const jchar text[], int count, jfloatArray widths) {
366        AutoJavaFloatArray autoWidths(env, widths, count);
367        jfloat* widthsArray = autoWidths.ptr();
368        SkScalar* scalarArray = (SkScalar*)widthsArray;
369
370        count = paint->getTextWidths(text, count << 1, scalarArray);
371        for (int i = 0; i < count; i++) {
372            widthsArray[i] = SkScalarToFloat(scalarArray[i]);
373        }
374        return count;
375    }
376
377    static int getTextWidths___CII_F(JNIEnv* env, jobject clazz, SkPaint* paint, jcharArray text, int index, int count, jfloatArray widths) {
378        const jchar* textArray = env->GetCharArrayElements(text, NULL);
379        count = dotextwidths(env, paint, textArray + index, count, widths);
380        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
381                                      JNI_ABORT);
382        return count;
383    }
384
385    static int getTextWidths__StringII_F(JNIEnv* env, jobject clazz, SkPaint* paint, jstring text, int start, int end, jfloatArray widths) {
386        const jchar* textArray = env->GetStringChars(text, NULL);
387        int count = dotextwidths(env, paint, textArray + start, end - start, widths);
388        env->ReleaseStringChars(text, textArray);
389        return count;
390    }
391
392    static void getTextPath___CIIFFPath(JNIEnv* env, jobject clazz, SkPaint* paint, jcharArray text, int index, int count, jfloat x, jfloat y, SkPath* path) {
393        const jchar* textArray = env->GetCharArrayElements(text, NULL);
394        paint->getTextPath(textArray + index, count << 1, SkFloatToScalar(x), SkFloatToScalar(y), path);
395        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
396                                      JNI_ABORT);
397    }
398
399    static void getTextPath__StringIIFFPath(JNIEnv* env, jobject clazz, SkPaint* paint, jstring text, int start, int end, jfloat x, jfloat y, SkPath* path) {
400        const jchar* textArray = env->GetStringChars(text, NULL);
401        paint->getTextPath(textArray + start, (end - start) << 1, SkFloatToScalar(x), SkFloatToScalar(y), path);
402        env->ReleaseStringChars(text, textArray);
403    }
404
405    static void setShadowLayer(JNIEnv* env, jobject jpaint, jfloat radius,
406                               jfloat dx, jfloat dy, int color) {
407        NPE_CHECK_RETURN_VOID(env, jpaint);
408
409        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
410        if (radius <= 0) {
411            paint->setLooper(NULL);
412        }
413        else {
414            paint->setLooper(new SkBlurDrawLooper(SkFloatToScalar(radius),
415                                                  SkFloatToScalar(dx),
416                                                  SkFloatToScalar(dy),
417                                                  (SkColor)color))->unref();
418        }
419    }
420
421    static int breakText(JNIEnv* env, const SkPaint& paint, const jchar text[],
422                         int count, float maxWidth, jfloatArray jmeasured,
423                         SkPaint::TextBufferDirection tbd) {
424        SkASSERT(paint.getTextEncoding() == SkPaint::kUTF16_TextEncoding);
425
426        SkScalar     measured;
427        size_t       bytes = paint.breakText(text, count << 1,
428                                   SkFloatToScalar(maxWidth), &measured, tbd);
429        SkASSERT((bytes & 1) == 0);
430
431        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
432            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
433            jfloat* array = autoMeasured.ptr();
434            array[0] = SkScalarToFloat(measured);
435        }
436        return bytes >> 1;
437    }
438
439    static int breakTextC(JNIEnv* env, jobject jpaint, jcharArray jtext,
440            int index, int count, float maxWidth, jfloatArray jmeasuredWidth) {
441        NPE_CHECK_RETURN_ZERO(env, jpaint);
442        NPE_CHECK_RETURN_ZERO(env, jtext);
443
444        SkPaint::TextBufferDirection tbd;
445        if (count < 0) {
446            tbd = SkPaint::kBackward_TextBufferDirection;
447            count = -count;
448        }
449        else {
450            tbd = SkPaint::kForward_TextBufferDirection;
451        }
452
453        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
454            doThrow(env, "java/lang/ArrayIndexOutOfBoundsException");
455            return 0;
456        }
457
458        SkPaint*     paint = GraphicsJNI::getNativePaint(env, jpaint);
459        const jchar* text = env->GetCharArrayElements(jtext, NULL);
460        count = breakText(env, *paint, text + index, count, maxWidth,
461                          jmeasuredWidth, tbd);
462        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
463                                      JNI_ABORT);
464        return count;
465    }
466
467    static int breakTextS(JNIEnv* env, jobject jpaint, jstring jtext,
468                bool forwards, float maxWidth, jfloatArray jmeasuredWidth) {
469        NPE_CHECK_RETURN_ZERO(env, jpaint);
470        NPE_CHECK_RETURN_ZERO(env, jtext);
471
472        SkPaint::TextBufferDirection tbd = forwards ?
473                                        SkPaint::kForward_TextBufferDirection :
474                                        SkPaint::kBackward_TextBufferDirection;
475
476        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
477        int count = env->GetStringLength(jtext);
478        const jchar* text = env->GetStringChars(jtext, NULL);
479        count = breakText(env, *paint, text, count, maxWidth,
480                          jmeasuredWidth, tbd);
481        env->ReleaseStringChars(jtext, text);
482        return count;
483    }
484
485    static void doTextBounds(JNIEnv* env, const jchar* text, int count,
486                             jobject bounds, const SkPaint& paint)
487    {
488        SkRect  r;
489        SkIRect ir;
490
491        paint.measureText(text, count << 1, &r);
492        r.roundOut(&ir);
493        GraphicsJNI::irect_to_jrect(ir, env, bounds);
494    }
495
496    static void getStringBounds(JNIEnv* env, jobject, const SkPaint* paint,
497                                jstring text, int start, int end, jobject bounds)
498    {
499        const jchar* textArray = env->GetStringChars(text, NULL);
500        doTextBounds(env, textArray + start, end - start, bounds, *paint);
501        env->ReleaseStringChars(text, textArray);
502    }
503
504    static void getCharArrayBounds(JNIEnv* env, jobject, const SkPaint* paint,
505                        jcharArray text, int index, int count, jobject bounds)
506    {
507        const jchar* textArray = env->GetCharArrayElements(text, NULL);
508        doTextBounds(env, textArray + index, count, bounds, *paint);
509        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
510                                      JNI_ABORT);
511    }
512
513};
514
515static JNINativeMethod methods[] = {
516    {"finalizer", "(I)V", (void*) SkPaintGlue::finalizer},
517    {"native_init","()I", (void*) SkPaintGlue::init},
518    {"native_initWithPaint","(I)I", (void*) SkPaintGlue::intiWithPaint},
519    {"native_reset","(I)V", (void*) SkPaintGlue::reset},
520    {"native_set","(II)V", (void*) SkPaintGlue::assign},
521    {"getFlags","()I", (void*) SkPaintGlue::getFlags},
522    {"setFlags","(I)V", (void*) SkPaintGlue::setFlags},
523    {"setAntiAlias","(Z)V", (void*) SkPaintGlue::setAntiAlias},
524    {"setSubpixelText","(Z)V", (void*) SkPaintGlue::setSubpixelText},
525    {"setLinearText","(Z)V", (void*) SkPaintGlue::setLinearText},
526    {"setUnderlineText","(Z)V", (void*) SkPaintGlue::setUnderlineText},
527    {"setStrikeThruText","(Z)V", (void*) SkPaintGlue::setStrikeThruText},
528    {"setFakeBoldText","(Z)V", (void*) SkPaintGlue::setFakeBoldText},
529    {"setFilterBitmap","(Z)V", (void*) SkPaintGlue::setFilterBitmap},
530    {"setDither","(Z)V", (void*) SkPaintGlue::setDither},
531    {"native_getStyle","(I)I", (void*) SkPaintGlue::getStyle},
532    {"native_setStyle","(II)V", (void*) SkPaintGlue::setStyle},
533    {"getColor","()I", (void*) SkPaintGlue::getColor},
534    {"setColor","(I)V", (void*) SkPaintGlue::setColor},
535    {"getAlpha","()I", (void*) SkPaintGlue::getAlpha},
536    {"setAlpha","(I)V", (void*) SkPaintGlue::setAlpha},
537    {"getStrokeWidth","()F", (void*) SkPaintGlue::getStrokeWidth},
538    {"setStrokeWidth","(F)V", (void*) SkPaintGlue::setStrokeWidth},
539    {"getStrokeMiter","()F", (void*) SkPaintGlue::getStrokeMiter},
540    {"setStrokeMiter","(F)V", (void*) SkPaintGlue::setStrokeMiter},
541    {"native_getStrokeCap","(I)I", (void*) SkPaintGlue::getStrokeCap},
542    {"native_setStrokeCap","(II)V", (void*) SkPaintGlue::setStrokeCap},
543    {"native_getStrokeJoin","(I)I", (void*) SkPaintGlue::getStrokeJoin},
544    {"native_setStrokeJoin","(II)V", (void*) SkPaintGlue::setStrokeJoin},
545    {"native_getFillPath","(III)Z", (void*) SkPaintGlue::getFillPath},
546    {"native_setShader","(II)I", (void*) SkPaintGlue::setShader},
547    {"native_setColorFilter","(II)I", (void*) SkPaintGlue::setColorFilter},
548    {"native_setXfermode","(II)I", (void*) SkPaintGlue::setXfermode},
549    {"native_setPathEffect","(II)I", (void*) SkPaintGlue::setPathEffect},
550    {"native_setMaskFilter","(II)I", (void*) SkPaintGlue::setMaskFilter},
551    {"native_setTypeface","(II)I", (void*) SkPaintGlue::setTypeface},
552    {"native_setRasterizer","(II)I", (void*) SkPaintGlue::setRasterizer},
553    {"native_getTextAlign","(I)I", (void*) SkPaintGlue::getTextAlign},
554    {"native_setTextAlign","(II)V", (void*) SkPaintGlue::setTextAlign},
555    {"getTextSize","()F", (void*) SkPaintGlue::getTextSize},
556    {"setTextSize","(F)V", (void*) SkPaintGlue::setTextSize},
557    {"getTextScaleX","()F", (void*) SkPaintGlue::getTextScaleX},
558    {"setTextScaleX","(F)V", (void*) SkPaintGlue::setTextScaleX},
559    {"getTextSkewX","()F", (void*) SkPaintGlue::getTextSkewX},
560    {"setTextSkewX","(F)V", (void*) SkPaintGlue::setTextSkewX},
561    {"ascent","()F", (void*) SkPaintGlue::ascent},
562    {"descent","()F", (void*) SkPaintGlue::descent},
563    {"getFontMetrics", "(Landroid/graphics/Paint$FontMetrics;)F", (void*)SkPaintGlue::getFontMetrics},
564    {"getFontMetricsInt", "(Landroid/graphics/Paint$FontMetricsInt;)I", (void*)SkPaintGlue::getFontMetricsInt},
565    {"measureText","([CII)F", (void*) SkPaintGlue::measureText_CII},
566    {"measureText","(Ljava/lang/String;)F", (void*) SkPaintGlue::measureText_String},
567    {"measureText","(Ljava/lang/String;II)F", (void*) SkPaintGlue::measureText_StringII},
568    {"breakText","([CIIF[F)I", (void*) SkPaintGlue::breakTextC},
569    {"breakText","(Ljava/lang/String;ZF[F)I", (void*) SkPaintGlue::breakTextS},
570    {"native_getTextWidths","(I[CII[F)I", (void*) SkPaintGlue::getTextWidths___CII_F},
571    {"native_getTextWidths","(ILjava/lang/String;II[F)I", (void*) SkPaintGlue::getTextWidths__StringII_F},
572    {"native_getTextPath","(I[CIIFFI)V", (void*) SkPaintGlue::getTextPath___CIIFFPath},
573    {"native_getTextPath","(ILjava/lang/String;IIFFI)V", (void*) SkPaintGlue::getTextPath__StringIIFFPath},
574    {"nativeGetStringBounds", "(ILjava/lang/String;IILandroid/graphics/Rect;)V",
575                                        (void*) SkPaintGlue::getStringBounds },
576    {"nativeGetCharArrayBounds", "(I[CIILandroid/graphics/Rect;)V",
577                                    (void*) SkPaintGlue::getCharArrayBounds },
578    {"setShadowLayer", "(FFFI)V", (void*)SkPaintGlue::setShadowLayer}
579};
580
581static jfieldID req_fieldID(jfieldID id) {
582    SkASSERT(id);
583    return id;
584}
585
586int register_android_graphics_Paint(JNIEnv* env) {
587    gFontMetrics_class = env->FindClass("android/graphics/Paint$FontMetrics");
588    SkASSERT(gFontMetrics_class);
589    gFontMetrics_class = (jclass)env->NewGlobalRef(gFontMetrics_class);
590
591    gFontMetrics_fieldID.top = req_fieldID(env->GetFieldID(gFontMetrics_class, "top", "F"));
592    gFontMetrics_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetrics_class, "ascent", "F"));
593    gFontMetrics_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetrics_class, "descent", "F"));
594    gFontMetrics_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetrics_class, "bottom", "F"));
595    gFontMetrics_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetrics_class, "leading", "F"));
596
597    gFontMetricsInt_class = env->FindClass("android/graphics/Paint$FontMetricsInt");
598    SkASSERT(gFontMetricsInt_class);
599    gFontMetricsInt_class = (jclass)env->NewGlobalRef(gFontMetricsInt_class);
600
601    gFontMetricsInt_fieldID.top = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "top", "I"));
602    gFontMetricsInt_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "ascent", "I"));
603    gFontMetricsInt_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "descent", "I"));
604    gFontMetricsInt_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "bottom", "I"));
605    gFontMetricsInt_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "leading", "I"));
606
607    int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Paint", methods,
608        sizeof(methods) / sizeof(methods[0]));
609    return result;
610}
611
612}
613