Paint.cpp revision 3d63e0119dc763ed0a06fd7498375746fd391d80 
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
51static void defaultSettingsForAndroid(SkPaint* paint) {
52    // looks best we decided
53    paint->setHinting(SkPaint::kSlight_Hinting);
54    // utf16 is required for java
55    paint->setTextEncoding(SkPaint::kUTF16_TextEncoding);
56}
57
58class SkPaintGlue {
59public:
60
61    static void finalizer(JNIEnv* env, jobject clazz, SkPaint* obj) {
62        delete obj;
63    }
64
65    static SkPaint* init(JNIEnv* env, jobject clazz) {
66        SkPaint* obj = new SkPaint();
67        defaultSettingsForAndroid(obj);
68        return obj;
69    }
70
71    static SkPaint* intiWithPaint(JNIEnv* env, jobject clazz, SkPaint* paint) {
72        SkPaint* obj = new SkPaint(*paint);
73        return obj;
74    }
75
76    static void reset(JNIEnv* env, jobject clazz, SkPaint* obj) {
77        obj->reset();
78        defaultSettingsForAndroid(obj);
79    }
80
81    static void assign(JNIEnv* env, jobject clazz, SkPaint* dst, const SkPaint* src) {
82        *dst = *src;
83    }
84
85    static jint getFlags(JNIEnv* env, jobject paint) {
86        NPE_CHECK_RETURN_ZERO(env, paint);
87        return GraphicsJNI::getNativePaint(env, paint)->getFlags();
88    }
89
90    static void setFlags(JNIEnv* env, jobject paint, jint flags) {
91        NPE_CHECK_RETURN_VOID(env, paint);
92        GraphicsJNI::getNativePaint(env, paint)->setFlags(flags);
93    }
94
95    static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) {
96        NPE_CHECK_RETURN_VOID(env, paint);
97        GraphicsJNI::getNativePaint(env, paint)->setAntiAlias(aa);
98    }
99
100    static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) {
101        NPE_CHECK_RETURN_VOID(env, paint);
102        GraphicsJNI::getNativePaint(env, paint)->setLinearText(linearText);
103    }
104
105    static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) {
106        NPE_CHECK_RETURN_VOID(env, paint);
107        GraphicsJNI::getNativePaint(env, paint)->setSubpixelText(subpixelText);
108    }
109
110    static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) {
111        NPE_CHECK_RETURN_VOID(env, paint);
112        GraphicsJNI::getNativePaint(env, paint)->setUnderlineText(underlineText);
113    }
114
115    static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) {
116        NPE_CHECK_RETURN_VOID(env, paint);
117        GraphicsJNI::getNativePaint(env, paint)->setStrikeThruText(strikeThruText);
118    }
119
120    static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) {
121        NPE_CHECK_RETURN_VOID(env, paint);
122        GraphicsJNI::getNativePaint(env, paint)->setFakeBoldText(fakeBoldText);
123    }
124
125    static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) {
126        NPE_CHECK_RETURN_VOID(env, paint);
127        GraphicsJNI::getNativePaint(env, paint)->setFilterBitmap(filterBitmap);
128    }
129
130    static void setDither(JNIEnv* env, jobject paint, jboolean dither) {
131        NPE_CHECK_RETURN_VOID(env, paint);
132        GraphicsJNI::getNativePaint(env, paint)->setDither(dither);
133    }
134
135    static jint getStyle(JNIEnv* env, jobject clazz, SkPaint* obj) {
136        return obj->getStyle();
137    }
138
139    static void setStyle(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Style style) {
140        obj->setStyle(style);
141    }
142
143    static jint getColor(JNIEnv* env, jobject paint) {
144        NPE_CHECK_RETURN_ZERO(env, paint);
145        return GraphicsJNI::getNativePaint(env, paint)->getColor();
146    }
147
148    static jint getAlpha(JNIEnv* env, jobject paint) {
149        NPE_CHECK_RETURN_ZERO(env, paint);
150        return GraphicsJNI::getNativePaint(env, paint)->getAlpha();
151    }
152
153    static void setColor(JNIEnv* env, jobject paint, jint color) {
154        NPE_CHECK_RETURN_VOID(env, paint);
155        GraphicsJNI::getNativePaint(env, paint)->setColor(color);
156    }
157
158    static void setAlpha(JNIEnv* env, jobject paint, jint a) {
159        NPE_CHECK_RETURN_VOID(env, paint);
160        GraphicsJNI::getNativePaint(env, paint)->setAlpha(a);
161    }
162
163    static jfloat getStrokeWidth(JNIEnv* env, jobject paint) {
164        NPE_CHECK_RETURN_ZERO(env, paint);
165        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeWidth());
166    }
167
168    static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) {
169        NPE_CHECK_RETURN_VOID(env, paint);
170        GraphicsJNI::getNativePaint(env, paint)->setStrokeWidth(SkFloatToScalar(width));
171    }
172
173    static jfloat getStrokeMiter(JNIEnv* env, jobject paint) {
174        NPE_CHECK_RETURN_ZERO(env, paint);
175        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeMiter());
176    }
177
178    static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) {
179        NPE_CHECK_RETURN_VOID(env, paint);
180        GraphicsJNI::getNativePaint(env, paint)->setStrokeMiter(SkFloatToScalar(miter));
181    }
182
183    static jint getStrokeCap(JNIEnv* env, jobject clazz, SkPaint* obj) {
184        return obj->getStrokeCap();
185    }
186
187    static void setStrokeCap(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Cap cap) {
188        obj->setStrokeCap(cap);
189    }
190
191    static jint getStrokeJoin(JNIEnv* env, jobject clazz, SkPaint* obj) {
192        return obj->getStrokeJoin();
193    }
194
195    static void setStrokeJoin(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Join join) {
196        obj->setStrokeJoin(join);
197    }
198
199    static jboolean getFillPath(JNIEnv* env, jobject clazz, SkPaint* obj, SkPath* src, SkPath* dst) {
200        return obj->getFillPath(*src, dst);
201    }
202
203    static SkShader* setShader(JNIEnv* env, jobject clazz, SkPaint* obj, SkShader* shader) {
204        return obj->setShader(shader);
205    }
206
207    static SkColorFilter* setColorFilter(JNIEnv* env, jobject clazz, SkPaint* obj, SkColorFilter* filter) {
208        return obj->setColorFilter(filter);
209    }
210
211    static SkXfermode* setXfermode(JNIEnv* env, jobject clazz, SkPaint* obj, SkXfermode* xfermode) {
212        return obj->setXfermode(xfermode);
213    }
214
215    static SkPathEffect* setPathEffect(JNIEnv* env, jobject clazz, SkPaint* obj, SkPathEffect* effect) {
216        return obj->setPathEffect(effect);
217    }
218
219    static SkMaskFilter* setMaskFilter(JNIEnv* env, jobject clazz, SkPaint* obj, SkMaskFilter* maskfilter) {
220        return obj->setMaskFilter(maskfilter);
221    }
222
223    static SkTypeface* setTypeface(JNIEnv* env, jobject clazz, SkPaint* obj, SkTypeface* typeface) {
224        return obj->setTypeface(typeface);
225    }
226
227    static SkRasterizer* setRasterizer(JNIEnv* env, jobject clazz, SkPaint* obj, SkRasterizer* rasterizer) {
228        return obj->setRasterizer(rasterizer);
229    }
230
231    static jint getTextAlign(JNIEnv* env, jobject clazz, SkPaint* obj) {
232        return obj->getTextAlign();
233    }
234
235    static void setTextAlign(JNIEnv* env, jobject clazz, SkPaint* obj, SkPaint::Align align) {
236        obj->setTextAlign(align);
237    }
238
239    static jfloat getTextSize(JNIEnv* env, jobject paint) {
240        NPE_CHECK_RETURN_ZERO(env, paint);
241        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSize());
242    }
243
244    static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) {
245        NPE_CHECK_RETURN_VOID(env, paint);
246        GraphicsJNI::getNativePaint(env, paint)->setTextSize(SkFloatToScalar(textSize));
247    }
248
249    static jfloat getTextScaleX(JNIEnv* env, jobject paint) {
250        NPE_CHECK_RETURN_ZERO(env, paint);
251        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextScaleX());
252    }
253
254    static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) {
255        NPE_CHECK_RETURN_VOID(env, paint);
256        GraphicsJNI::getNativePaint(env, paint)->setTextScaleX(SkFloatToScalar(scaleX));
257    }
258
259    static jfloat getTextSkewX(JNIEnv* env, jobject paint) {
260        NPE_CHECK_RETURN_ZERO(env, paint);
261        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSkewX());
262    }
263
264    static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) {
265        NPE_CHECK_RETURN_VOID(env, paint);
266        GraphicsJNI::getNativePaint(env, paint)->setTextSkewX(SkFloatToScalar(skewX));
267    }
268
269    static jfloat ascent(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.fAscent);
274    }
275
276    static jfloat descent(JNIEnv* env, jobject paint) {
277        NPE_CHECK_RETURN_ZERO(env, paint);
278        SkPaint::FontMetrics    metrics;
279        (void)GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics);
280        return SkScalarToFloat(metrics.fDescent);
281    }
282
283    static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) {
284        NPE_CHECK_RETURN_ZERO(env, paint);
285        SkPaint::FontMetrics metrics;
286        SkScalar             spacing = GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics);
287
288        if (metricsObj) {
289            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
290            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
291            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
292            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
293            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
294            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
295        }
296        return SkScalarToFloat(spacing);
297    }
298
299    static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) {
300        NPE_CHECK_RETURN_ZERO(env, paint);
301        SkPaint::FontMetrics metrics;
302
303        GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics);
304        int ascent = SkScalarRound(metrics.fAscent);
305        int descent = SkScalarRound(metrics.fDescent);
306        int leading = SkScalarRound(metrics.fLeading);
307
308        if (metricsObj) {
309            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
310            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloor(metrics.fTop));
311            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
312            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
313            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeil(metrics.fBottom));
314            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
315        }
316        return descent - ascent + leading;
317    }
318
319    static jfloat measureText_CII(JNIEnv* env, jobject jpaint, jcharArray text, int index, int count) {
320        NPE_CHECK_RETURN_ZERO(env, jpaint);
321        NPE_CHECK_RETURN_ZERO(env, text);
322
323        size_t textLength = env->GetArrayLength(text);
324
325        if ((index | count) < 0 || (size_t)(index + count) > textLength) {
326            doThrow(env, "java/lang/ArrayIndexOutOfBoundsException");
327            return 0;
328        }
329
330        const SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
331        const jchar* textArray = env->GetCharArrayElements(text, NULL);
332        // we double count, since measureText wants a byteLength
333        SkScalar width = paint->measureText(textArray + index, count << 1);
334        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
335                                      JNI_ABORT);
336
337        return SkScalarToFloat(width);
338    }
339
340    static jfloat measureText_StringII(JNIEnv* env, jobject jpaint, jstring text, int start, int end) {
341        NPE_CHECK_RETURN_ZERO(env, jpaint);
342        NPE_CHECK_RETURN_ZERO(env, text);
343
344        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
345        const jchar* textArray = env->GetStringChars(text, NULL);
346        size_t textLength = env->GetStringLength(text);
347
348        int count = end - start;
349        if ((start | count) < 0 || (size_t)count > textLength) {
350            doThrow(env, "java/lang/IndexOutOfBoundsException");
351            return 0;
352        }
353
354        jfloat width = SkScalarToFloat(paint->measureText(textArray + start, count << 1));
355        env->ReleaseStringChars(text, textArray);
356        return width;
357    }
358
359    static jfloat measureText_String(JNIEnv* env, jobject jpaint, jstring text) {
360        NPE_CHECK_RETURN_ZERO(env, jpaint);
361        NPE_CHECK_RETURN_ZERO(env, text);
362
363        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
364        const jchar* textArray = env->GetStringChars(text, NULL);
365        size_t textLength = env->GetStringLength(text);
366
367        jfloat width = SkScalarToFloat(paint->measureText(textArray, textLength << 1));
368        env->ReleaseStringChars(text, textArray);
369        return width;
370    }
371
372    static int dotextwidths(JNIEnv* env, SkPaint* paint, const jchar text[], int count, jfloatArray widths) {
373        AutoJavaFloatArray autoWidths(env, widths, count);
374        jfloat* widthsArray = autoWidths.ptr();
375        SkScalar* scalarArray = (SkScalar*)widthsArray;
376
377        count = paint->getTextWidths(text, count << 1, scalarArray);
378        for (int i = 0; i < count; i++) {
379            widthsArray[i] = SkScalarToFloat(scalarArray[i]);
380        }
381        return count;
382    }
383
384    static int getTextWidths___CII_F(JNIEnv* env, jobject clazz, SkPaint* paint, jcharArray text, int index, int count, jfloatArray widths) {
385        const jchar* textArray = env->GetCharArrayElements(text, NULL);
386        count = dotextwidths(env, paint, textArray + index, count, widths);
387        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
388                                      JNI_ABORT);
389        return count;
390    }
391
392    static int getTextWidths__StringII_F(JNIEnv* env, jobject clazz, SkPaint* paint, jstring text, int start, int end, jfloatArray widths) {
393        const jchar* textArray = env->GetStringChars(text, NULL);
394        int count = dotextwidths(env, paint, textArray + start, end - start, widths);
395        env->ReleaseStringChars(text, textArray);
396        return count;
397    }
398
399    static void getTextPath___CIIFFPath(JNIEnv* env, jobject clazz, SkPaint* paint, jcharArray text, int index, int count, jfloat x, jfloat y, SkPath* path) {
400        const jchar* textArray = env->GetCharArrayElements(text, NULL);
401        paint->getTextPath(textArray + index, count << 1, SkFloatToScalar(x), SkFloatToScalar(y), path);
402        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
403                                      JNI_ABORT);
404    }
405
406    static void getTextPath__StringIIFFPath(JNIEnv* env, jobject clazz, SkPaint* paint, jstring text, int start, int end, jfloat x, jfloat y, SkPath* path) {
407        const jchar* textArray = env->GetStringChars(text, NULL);
408        paint->getTextPath(textArray + start, (end - start) << 1, SkFloatToScalar(x), SkFloatToScalar(y), path);
409        env->ReleaseStringChars(text, textArray);
410    }
411
412    static void setShadowLayer(JNIEnv* env, jobject jpaint, jfloat radius,
413                               jfloat dx, jfloat dy, int color) {
414        NPE_CHECK_RETURN_VOID(env, jpaint);
415
416        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
417        if (radius <= 0) {
418            paint->setLooper(NULL);
419        }
420        else {
421            paint->setLooper(new SkBlurDrawLooper(SkFloatToScalar(radius),
422                                                  SkFloatToScalar(dx),
423                                                  SkFloatToScalar(dy),
424                                                  (SkColor)color))->unref();
425        }
426    }
427
428    static int breakText(JNIEnv* env, const SkPaint& paint, const jchar text[],
429                         int count, float maxWidth, jfloatArray jmeasured,
430                         SkPaint::TextBufferDirection tbd) {
431        SkASSERT(paint.getTextEncoding() == SkPaint::kUTF16_TextEncoding);
432
433        SkScalar     measured;
434        size_t       bytes = paint.breakText(text, count << 1,
435                                   SkFloatToScalar(maxWidth), &measured, tbd);
436        SkASSERT((bytes & 1) == 0);
437
438        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
439            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
440            jfloat* array = autoMeasured.ptr();
441            array[0] = SkScalarToFloat(measured);
442        }
443        return bytes >> 1;
444    }
445
446    static int breakTextC(JNIEnv* env, jobject jpaint, jcharArray jtext,
447            int index, int count, float maxWidth, jfloatArray jmeasuredWidth) {
448        NPE_CHECK_RETURN_ZERO(env, jpaint);
449        NPE_CHECK_RETURN_ZERO(env, jtext);
450
451        SkPaint::TextBufferDirection tbd;
452        if (count < 0) {
453            tbd = SkPaint::kBackward_TextBufferDirection;
454            count = -count;
455        }
456        else {
457            tbd = SkPaint::kForward_TextBufferDirection;
458        }
459
460        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
461            doThrow(env, "java/lang/ArrayIndexOutOfBoundsException");
462            return 0;
463        }
464
465        SkPaint*     paint = GraphicsJNI::getNativePaint(env, jpaint);
466        const jchar* text = env->GetCharArrayElements(jtext, NULL);
467        count = breakText(env, *paint, text + index, count, maxWidth,
468                          jmeasuredWidth, tbd);
469        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
470                                      JNI_ABORT);
471        return count;
472    }
473
474    static int breakTextS(JNIEnv* env, jobject jpaint, jstring jtext,
475                bool forwards, float maxWidth, jfloatArray jmeasuredWidth) {
476        NPE_CHECK_RETURN_ZERO(env, jpaint);
477        NPE_CHECK_RETURN_ZERO(env, jtext);
478
479        SkPaint::TextBufferDirection tbd = forwards ?
480                                        SkPaint::kForward_TextBufferDirection :
481                                        SkPaint::kBackward_TextBufferDirection;
482
483        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
484        int count = env->GetStringLength(jtext);
485        const jchar* text = env->GetStringChars(jtext, NULL);
486        count = breakText(env, *paint, text, count, maxWidth,
487                          jmeasuredWidth, tbd);
488        env->ReleaseStringChars(jtext, text);
489        return count;
490    }
491
492    static void doTextBounds(JNIEnv* env, const jchar* text, int count,
493                             jobject bounds, const SkPaint& paint)
494    {
495        SkRect  r;
496        SkIRect ir;
497
498        paint.measureText(text, count << 1, &r);
499        r.roundOut(&ir);
500        GraphicsJNI::irect_to_jrect(ir, env, bounds);
501    }
502
503    static void getStringBounds(JNIEnv* env, jobject, const SkPaint* paint,
504                                jstring text, int start, int end, jobject bounds)
505    {
506        const jchar* textArray = env->GetStringChars(text, NULL);
507        doTextBounds(env, textArray + start, end - start, bounds, *paint);
508        env->ReleaseStringChars(text, textArray);
509    }
510
511    static void getCharArrayBounds(JNIEnv* env, jobject, const SkPaint* paint,
512                        jcharArray text, int index, int count, jobject bounds)
513    {
514        const jchar* textArray = env->GetCharArrayElements(text, NULL);
515        doTextBounds(env, textArray + index, count, bounds, *paint);
516        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
517                                      JNI_ABORT);
518    }
519
520};
521
522static JNINativeMethod methods[] = {
523    {"finalizer", "(I)V", (void*) SkPaintGlue::finalizer},
524    {"native_init","()I", (void*) SkPaintGlue::init},
525    {"native_initWithPaint","(I)I", (void*) SkPaintGlue::intiWithPaint},
526    {"native_reset","(I)V", (void*) SkPaintGlue::reset},
527    {"native_set","(II)V", (void*) SkPaintGlue::assign},
528    {"getFlags","()I", (void*) SkPaintGlue::getFlags},
529    {"setFlags","(I)V", (void*) SkPaintGlue::setFlags},
530    {"setAntiAlias","(Z)V", (void*) SkPaintGlue::setAntiAlias},
531    {"setSubpixelText","(Z)V", (void*) SkPaintGlue::setSubpixelText},
532    {"setLinearText","(Z)V", (void*) SkPaintGlue::setLinearText},
533    {"setUnderlineText","(Z)V", (void*) SkPaintGlue::setUnderlineText},
534    {"setStrikeThruText","(Z)V", (void*) SkPaintGlue::setStrikeThruText},
535    {"setFakeBoldText","(Z)V", (void*) SkPaintGlue::setFakeBoldText},
536    {"setFilterBitmap","(Z)V", (void*) SkPaintGlue::setFilterBitmap},
537    {"setDither","(Z)V", (void*) SkPaintGlue::setDither},
538    {"native_getStyle","(I)I", (void*) SkPaintGlue::getStyle},
539    {"native_setStyle","(II)V", (void*) SkPaintGlue::setStyle},
540    {"getColor","()I", (void*) SkPaintGlue::getColor},
541    {"setColor","(I)V", (void*) SkPaintGlue::setColor},
542    {"getAlpha","()I", (void*) SkPaintGlue::getAlpha},
543    {"setAlpha","(I)V", (void*) SkPaintGlue::setAlpha},
544    {"getStrokeWidth","()F", (void*) SkPaintGlue::getStrokeWidth},
545    {"setStrokeWidth","(F)V", (void*) SkPaintGlue::setStrokeWidth},
546    {"getStrokeMiter","()F", (void*) SkPaintGlue::getStrokeMiter},
547    {"setStrokeMiter","(F)V", (void*) SkPaintGlue::setStrokeMiter},
548    {"native_getStrokeCap","(I)I", (void*) SkPaintGlue::getStrokeCap},
549    {"native_setStrokeCap","(II)V", (void*) SkPaintGlue::setStrokeCap},
550    {"native_getStrokeJoin","(I)I", (void*) SkPaintGlue::getStrokeJoin},
551    {"native_setStrokeJoin","(II)V", (void*) SkPaintGlue::setStrokeJoin},
552    {"native_getFillPath","(III)Z", (void*) SkPaintGlue::getFillPath},
553    {"native_setShader","(II)I", (void*) SkPaintGlue::setShader},
554    {"native_setColorFilter","(II)I", (void*) SkPaintGlue::setColorFilter},
555    {"native_setXfermode","(II)I", (void*) SkPaintGlue::setXfermode},
556    {"native_setPathEffect","(II)I", (void*) SkPaintGlue::setPathEffect},
557    {"native_setMaskFilter","(II)I", (void*) SkPaintGlue::setMaskFilter},
558    {"native_setTypeface","(II)I", (void*) SkPaintGlue::setTypeface},
559    {"native_setRasterizer","(II)I", (void*) SkPaintGlue::setRasterizer},
560    {"native_getTextAlign","(I)I", (void*) SkPaintGlue::getTextAlign},
561    {"native_setTextAlign","(II)V", (void*) SkPaintGlue::setTextAlign},
562    {"getTextSize","()F", (void*) SkPaintGlue::getTextSize},
563    {"setTextSize","(F)V", (void*) SkPaintGlue::setTextSize},
564    {"getTextScaleX","()F", (void*) SkPaintGlue::getTextScaleX},
565    {"setTextScaleX","(F)V", (void*) SkPaintGlue::setTextScaleX},
566    {"getTextSkewX","()F", (void*) SkPaintGlue::getTextSkewX},
567    {"setTextSkewX","(F)V", (void*) SkPaintGlue::setTextSkewX},
568    {"ascent","()F", (void*) SkPaintGlue::ascent},
569    {"descent","()F", (void*) SkPaintGlue::descent},
570    {"getFontMetrics", "(Landroid/graphics/Paint$FontMetrics;)F", (void*)SkPaintGlue::getFontMetrics},
571    {"getFontMetricsInt", "(Landroid/graphics/Paint$FontMetricsInt;)I", (void*)SkPaintGlue::getFontMetricsInt},
572    {"measureText","([CII)F", (void*) SkPaintGlue::measureText_CII},
573    {"measureText","(Ljava/lang/String;)F", (void*) SkPaintGlue::measureText_String},
574    {"measureText","(Ljava/lang/String;II)F", (void*) SkPaintGlue::measureText_StringII},
575    {"breakText","([CIIF[F)I", (void*) SkPaintGlue::breakTextC},
576    {"breakText","(Ljava/lang/String;ZF[F)I", (void*) SkPaintGlue::breakTextS},
577    {"native_getTextWidths","(I[CII[F)I", (void*) SkPaintGlue::getTextWidths___CII_F},
578    {"native_getTextWidths","(ILjava/lang/String;II[F)I", (void*) SkPaintGlue::getTextWidths__StringII_F},
579    {"native_getTextPath","(I[CIIFFI)V", (void*) SkPaintGlue::getTextPath___CIIFFPath},
580    {"native_getTextPath","(ILjava/lang/String;IIFFI)V", (void*) SkPaintGlue::getTextPath__StringIIFFPath},
581    {"nativeGetStringBounds", "(ILjava/lang/String;IILandroid/graphics/Rect;)V",
582                                        (void*) SkPaintGlue::getStringBounds },
583    {"nativeGetCharArrayBounds", "(I[CIILandroid/graphics/Rect;)V",
584                                    (void*) SkPaintGlue::getCharArrayBounds },
585    {"setShadowLayer", "(FFFI)V", (void*)SkPaintGlue::setShadowLayer}
586};
587
588static jfieldID req_fieldID(jfieldID id) {
589    SkASSERT(id);
590    return id;
591}
592
593int register_android_graphics_Paint(JNIEnv* env) {
594    gFontMetrics_class = env->FindClass("android/graphics/Paint$FontMetrics");
595    SkASSERT(gFontMetrics_class);
596    gFontMetrics_class = (jclass)env->NewGlobalRef(gFontMetrics_class);
597
598    gFontMetrics_fieldID.top = req_fieldID(env->GetFieldID(gFontMetrics_class, "top", "F"));
599    gFontMetrics_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetrics_class, "ascent", "F"));
600    gFontMetrics_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetrics_class, "descent", "F"));
601    gFontMetrics_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetrics_class, "bottom", "F"));
602    gFontMetrics_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetrics_class, "leading", "F"));
603
604    gFontMetricsInt_class = env->FindClass("android/graphics/Paint$FontMetricsInt");
605    SkASSERT(gFontMetricsInt_class);
606    gFontMetricsInt_class = (jclass)env->NewGlobalRef(gFontMetricsInt_class);
607
608    gFontMetricsInt_fieldID.top = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "top", "I"));
609    gFontMetricsInt_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "ascent", "I"));
610    gFontMetricsInt_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "descent", "I"));
611    gFontMetricsInt_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "bottom", "I"));
612    gFontMetricsInt_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "leading", "I"));
613
614    int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Paint", methods,
615        sizeof(methods) / sizeof(methods[0]));
616    return result;
617}
618
619}
620