Paint.cpp revision 9d9ee3d666c63938311839002ec974673998c6d0 
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#define LOG_TAG "Paint"
19
20#include <utils/Log.h>
21
22#include "jni.h"
23#include "GraphicsJNI.h"
24#include <android_runtime/AndroidRuntime.h>
25#include <ScopedUtfChars.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#include "unicode/uloc.h"
35#include "unicode/ushape.h"
36#include "TextLayout.h"
37
38#ifdef USE_MINIKIN
39#include <minikin/Layout.h>
40#include "MinikinSkia.h"
41#include "MinikinUtils.h"
42#endif
43
44// temporary for debugging
45#include <Caches.h>
46#include <utils/Log.h>
47
48namespace android {
49
50struct JMetricsID {
51    jfieldID    top;
52    jfieldID    ascent;
53    jfieldID    descent;
54    jfieldID    bottom;
55    jfieldID    leading;
56};
57
58static jclass   gFontMetrics_class;
59static JMetricsID gFontMetrics_fieldID;
60
61static jclass   gFontMetricsInt_class;
62static JMetricsID gFontMetricsInt_fieldID;
63
64static void defaultSettingsForAndroid(SkPaint* paint) {
65    // GlyphID encoding is required because we are using Harfbuzz shaping
66    paint->setTextEncoding(SkPaint::kGlyphID_TextEncoding);
67
68    SkPaintOptionsAndroid paintOpts = paint->getPaintOptionsAndroid();
69    paintOpts.setUseFontFallbacks(true);
70    paint->setPaintOptionsAndroid(paintOpts);
71}
72
73class SkPaintGlue {
74public:
75    enum MoveOpt {
76        AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
77    };
78
79    static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
80        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
81        delete obj;
82    }
83
84    static jlong init(JNIEnv* env, jobject clazz) {
85        SkPaint* obj = new SkPaint();
86        defaultSettingsForAndroid(obj);
87        return reinterpret_cast<jlong>(obj);
88    }
89
90    static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
91        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
92        SkPaint* obj = new SkPaint(*paint);
93        return reinterpret_cast<jlong>(obj);
94    }
95
96    static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
97        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
98        obj->reset();
99        defaultSettingsForAndroid(obj);
100    }
101
102    static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) {
103        SkPaint* dst = reinterpret_cast<SkPaint*>(dstPaintHandle);
104        const SkPaint* src = reinterpret_cast<SkPaint*>(srcPaintHandle);
105        *dst = *src;
106    }
107
108    static jint getFlags(JNIEnv* env, jobject paint) {
109        NPE_CHECK_RETURN_ZERO(env, paint);
110        int result;
111        result = GraphicsJNI::getNativePaint(env, paint)->getFlags();
112        return static_cast<jint>(result);
113    }
114
115    static void setFlags(JNIEnv* env, jobject paint, jint flags) {
116        NPE_CHECK_RETURN_VOID(env, paint);
117        GraphicsJNI::getNativePaint(env, paint)->setFlags(flags);
118    }
119
120    static jint getHinting(JNIEnv* env, jobject paint) {
121        NPE_CHECK_RETURN_ZERO(env, paint);
122        return GraphicsJNI::getNativePaint(env, paint)->getHinting()
123                == SkPaint::kNo_Hinting ? 0 : 1;
124    }
125
126    static void setHinting(JNIEnv* env, jobject paint, jint mode) {
127        NPE_CHECK_RETURN_VOID(env, paint);
128        GraphicsJNI::getNativePaint(env, paint)->setHinting(
129                mode == 0 ? SkPaint::kNo_Hinting : SkPaint::kNormal_Hinting);
130    }
131
132    static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) {
133        NPE_CHECK_RETURN_VOID(env, paint);
134        GraphicsJNI::getNativePaint(env, paint)->setAntiAlias(aa);
135    }
136
137    static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) {
138        NPE_CHECK_RETURN_VOID(env, paint);
139        GraphicsJNI::getNativePaint(env, paint)->setLinearText(linearText);
140    }
141
142    static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) {
143        NPE_CHECK_RETURN_VOID(env, paint);
144        GraphicsJNI::getNativePaint(env, paint)->setSubpixelText(subpixelText);
145    }
146
147    static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) {
148        NPE_CHECK_RETURN_VOID(env, paint);
149        GraphicsJNI::getNativePaint(env, paint)->setUnderlineText(underlineText);
150    }
151
152    static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) {
153        NPE_CHECK_RETURN_VOID(env, paint);
154        GraphicsJNI::getNativePaint(env, paint)->setStrikeThruText(strikeThruText);
155    }
156
157    static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) {
158        NPE_CHECK_RETURN_VOID(env, paint);
159        GraphicsJNI::getNativePaint(env, paint)->setFakeBoldText(fakeBoldText);
160    }
161
162    static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) {
163        NPE_CHECK_RETURN_VOID(env, paint);
164        GraphicsJNI::getNativePaint(env, paint)->setFilterLevel(
165                filterBitmap ? SkPaint::kLow_FilterLevel : SkPaint::kNone_FilterLevel);
166    }
167
168    static void setDither(JNIEnv* env, jobject paint, jboolean dither) {
169        NPE_CHECK_RETURN_VOID(env, paint);
170        GraphicsJNI::getNativePaint(env, paint)->setDither(dither);
171    }
172
173    static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) {
174        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
175        return static_cast<jint>(obj->getStyle());
176    }
177
178    static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) {
179        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
180        SkPaint::Style style = static_cast<SkPaint::Style>(styleHandle);
181        obj->setStyle(style);
182    }
183
184    static jint getColor(JNIEnv* env, jobject paint) {
185        NPE_CHECK_RETURN_ZERO(env, paint);
186        int color;
187        color = GraphicsJNI::getNativePaint(env, paint)->getColor();
188        return static_cast<jint>(color);
189    }
190
191    static jint getAlpha(JNIEnv* env, jobject paint) {
192        NPE_CHECK_RETURN_ZERO(env, paint);
193        int alpha;
194        alpha = GraphicsJNI::getNativePaint(env, paint)->getAlpha();
195        return static_cast<jint>(alpha);
196    }
197
198    static void setColor(JNIEnv* env, jobject paint, jint color) {
199        NPE_CHECK_RETURN_VOID(env, paint);
200        GraphicsJNI::getNativePaint(env, paint)->setColor(color);
201    }
202
203    static void setAlpha(JNIEnv* env, jobject paint, jint a) {
204        NPE_CHECK_RETURN_VOID(env, paint);
205        GraphicsJNI::getNativePaint(env, paint)->setAlpha(a);
206    }
207
208    static jfloat getStrokeWidth(JNIEnv* env, jobject paint) {
209        NPE_CHECK_RETURN_ZERO(env, paint);
210        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeWidth());
211    }
212
213    static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) {
214        NPE_CHECK_RETURN_VOID(env, paint);
215        GraphicsJNI::getNativePaint(env, paint)->setStrokeWidth(width);
216    }
217
218    static jfloat getStrokeMiter(JNIEnv* env, jobject paint) {
219        NPE_CHECK_RETURN_ZERO(env, paint);
220        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeMiter());
221    }
222
223    static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) {
224        NPE_CHECK_RETURN_VOID(env, paint);
225        GraphicsJNI::getNativePaint(env, paint)->setStrokeMiter(miter);
226    }
227
228    static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) {
229        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
230        return static_cast<jint>(obj->getStrokeCap());
231    }
232
233    static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) {
234        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
235        SkPaint::Cap cap = static_cast<SkPaint::Cap>(capHandle);
236        obj->setStrokeCap(cap);
237    }
238
239    static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) {
240        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
241        return static_cast<jint>(obj->getStrokeJoin());
242    }
243
244    static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) {
245        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
246        SkPaint::Join join = (SkPaint::Join) joinHandle;
247        obj->setStrokeJoin(join);
248    }
249
250    static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) {
251        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
252        SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
253        SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
254        return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
255    }
256
257    static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) {
258        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
259        SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
260        return reinterpret_cast<jlong>(obj->setShader(shader));
261    }
262
263    static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) {
264        SkPaint* obj = reinterpret_cast<SkPaint *>(objHandle);
265        SkColorFilter* filter  = reinterpret_cast<SkColorFilter *>(filterHandle);
266        return reinterpret_cast<jlong>(obj->setColorFilter(filter));
267    }
268
269    static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) {
270        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
271        SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle);
272        return reinterpret_cast<jlong>(obj->setXfermode(xfermode));
273    }
274
275    static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) {
276        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
277        SkPathEffect* effect  = reinterpret_cast<SkPathEffect*>(effectHandle);
278        return reinterpret_cast<jlong>(obj->setPathEffect(effect));
279    }
280
281    static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) {
282        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
283        SkMaskFilter* maskfilter  = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
284        return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter));
285    }
286
287    static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) {
288#ifndef USE_MINIKIN
289        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
290        SkTypeface* typeface = reinterpret_cast<SkTypeface*>(typefaceHandle);
291        return reinterpret_cast<jlong>(obj->setTypeface(typeface));
292#else
293        // TODO(raph): not yet implemented
294        return NULL;
295#endif
296    }
297
298    static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) {
299        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
300        SkRasterizer* rasterizer = reinterpret_cast<SkRasterizer*>(rasterizerHandle);
301        return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer));
302    }
303
304    static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) {
305        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
306        return static_cast<jint>(obj->getTextAlign());
307    }
308
309    static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) {
310        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
311        SkPaint::Align align = static_cast<SkPaint::Align>(alignHandle);
312        obj->setTextAlign(align);
313    }
314
315    // generate bcp47 identifier for the supplied locale
316    static void toLanguageTag(char* output, size_t outSize,
317            const char* locale) {
318        if (output == NULL || outSize <= 0) {
319            return;
320        }
321        if (locale == NULL) {
322            output[0] = '\0';
323            return;
324        }
325        char canonicalChars[ULOC_FULLNAME_CAPACITY];
326        UErrorCode uErr = U_ZERO_ERROR;
327        uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY,
328                &uErr);
329        if (U_SUCCESS(uErr)) {
330            char likelyChars[ULOC_FULLNAME_CAPACITY];
331            uErr = U_ZERO_ERROR;
332            uloc_addLikelySubtags(canonicalChars, likelyChars,
333                    ULOC_FULLNAME_CAPACITY, &uErr);
334            if (U_SUCCESS(uErr)) {
335                uErr = U_ZERO_ERROR;
336                uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr);
337                if (U_SUCCESS(uErr)) {
338                    return;
339                } else {
340                    ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars,
341                            u_errorName(uErr));
342                }
343            } else {
344                ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s",
345                        canonicalChars, u_errorName(uErr));
346            }
347        } else {
348            ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale,
349                    u_errorName(uErr));
350        }
351        // unable to build a proper language identifier
352        output[0] = '\0';
353    }
354
355    static void setTextLocale(JNIEnv* env, jobject clazz, jlong objHandle, jstring locale) {
356        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
357        ScopedUtfChars localeChars(env, locale);
358        char langTag[ULOC_FULLNAME_CAPACITY];
359        toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, localeChars.c_str());
360
361        SkPaintOptionsAndroid paintOpts = obj->getPaintOptionsAndroid();
362        paintOpts.setLanguage(langTag);
363        obj->setPaintOptionsAndroid(paintOpts);
364    }
365
366    static jboolean isElegantTextHeight(JNIEnv* env, jobject paint) {
367        NPE_CHECK_RETURN_ZERO(env, paint);
368        SkPaint* obj = GraphicsJNI::getNativePaint(env, paint);
369        SkPaintOptionsAndroid paintOpts = obj->getPaintOptionsAndroid();
370        return paintOpts.getFontVariant() == SkPaintOptionsAndroid::kElegant_Variant;
371    }
372
373    static void setElegantTextHeight(JNIEnv* env, jobject paint, jboolean aa) {
374        NPE_CHECK_RETURN_VOID(env, paint);
375        SkPaint* obj = GraphicsJNI::getNativePaint(env, paint);
376        SkPaintOptionsAndroid::FontVariant variant =
377            aa ? SkPaintOptionsAndroid::kElegant_Variant :
378            SkPaintOptionsAndroid::kDefault_Variant;
379        SkPaintOptionsAndroid paintOpts = obj->getPaintOptionsAndroid();
380        paintOpts.setFontVariant(variant);
381        obj->setPaintOptionsAndroid(paintOpts);
382    }
383
384    static jfloat getTextSize(JNIEnv* env, jobject paint) {
385        NPE_CHECK_RETURN_ZERO(env, paint);
386        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSize());
387    }
388
389    static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) {
390        NPE_CHECK_RETURN_VOID(env, paint);
391        GraphicsJNI::getNativePaint(env, paint)->setTextSize(textSize);
392    }
393
394    static jfloat getTextScaleX(JNIEnv* env, jobject paint) {
395        NPE_CHECK_RETURN_ZERO(env, paint);
396        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextScaleX());
397    }
398
399    static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) {
400        NPE_CHECK_RETURN_VOID(env, paint);
401        GraphicsJNI::getNativePaint(env, paint)->setTextScaleX(scaleX);
402    }
403
404    static jfloat getTextSkewX(JNIEnv* env, jobject paint) {
405        NPE_CHECK_RETURN_ZERO(env, paint);
406        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSkewX());
407    }
408
409    static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) {
410        NPE_CHECK_RETURN_VOID(env, paint);
411        GraphicsJNI::getNativePaint(env, paint)->setTextSkewX(skewX);
412    }
413
414    static jfloat ascent(JNIEnv* env, jobject paint) {
415        NPE_CHECK_RETURN_ZERO(env, paint);
416        SkPaint::FontMetrics    metrics;
417        (void)GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics);
418        return SkScalarToFloat(metrics.fAscent);
419    }
420
421    static jfloat descent(JNIEnv* env, jobject paint) {
422        NPE_CHECK_RETURN_ZERO(env, paint);
423        SkPaint::FontMetrics    metrics;
424        (void)GraphicsJNI::getNativePaint(env, paint)->getFontMetrics(&metrics);
425        return SkScalarToFloat(metrics.fDescent);
426    }
427
428    static SkScalar getMetricsInternal(SkPaint *paint, SkPaint::FontMetrics *metrics) {
429        const int kElegantTop = 2500;
430        const int kElegantBottom = -1000;
431        const int kElegantAscent = 1946;
432        const int kElegantDescent = -512;
433        const int kElegantLeading = 0;
434        SkScalar spacing = paint->getFontMetrics(metrics);
435        SkPaintOptionsAndroid paintOpts = paint->getPaintOptionsAndroid();
436        if (paintOpts.getFontVariant() == SkPaintOptionsAndroid::kElegant_Variant) {
437            SkScalar size = paint->getTextSize();
438            metrics->fTop = -size * kElegantTop / 2048;
439            metrics->fBottom = -size * kElegantBottom / 2048;
440            metrics->fAscent = -size * kElegantAscent / 2048;
441            metrics->fDescent = -size * kElegantDescent / 2048;
442            metrics->fLeading = size * kElegantLeading / 2048;
443            spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
444        }
445        return spacing;
446    }
447
448    static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) {
449        NPE_CHECK_RETURN_ZERO(env, paint);
450        SkPaint::FontMetrics metrics;
451        SkScalar spacing = getMetricsInternal(GraphicsJNI::getNativePaint(env, paint), &metrics);
452
453        if (metricsObj) {
454            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
455            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
456            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
457            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
458            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
459            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
460        }
461        return SkScalarToFloat(spacing);
462    }
463
464    static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) {
465        NPE_CHECK_RETURN_ZERO(env, paint);
466        SkPaint::FontMetrics metrics;
467
468        getMetricsInternal(GraphicsJNI::getNativePaint(env, paint), &metrics);
469        int ascent = SkScalarRoundToInt(metrics.fAscent);
470        int descent = SkScalarRoundToInt(metrics.fDescent);
471        int leading = SkScalarRoundToInt(metrics.fLeading);
472
473        if (metricsObj) {
474            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
475            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
476            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
477            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
478            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
479            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
480        }
481        return descent - ascent + leading;
482    }
483
484    static jfloat measureText_CIII(JNIEnv* env, jobject jpaint, jcharArray text, jint index, jint count,
485            jint bidiFlags) {
486        NPE_CHECK_RETURN_ZERO(env, jpaint);
487        NPE_CHECK_RETURN_ZERO(env, text);
488
489        size_t textLength = env->GetArrayLength(text);
490        if ((index | count) < 0 || (size_t)(index + count) > textLength) {
491            doThrowAIOOBE(env);
492            return 0;
493        }
494        if (count == 0) {
495            return 0;
496        }
497
498        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
499        const jchar* textArray = env->GetCharArrayElements(text, NULL);
500        jfloat result = 0;
501
502#ifdef USE_MINIKIN
503        Layout layout;
504        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
505        MinikinUtils::SetLayoutProperties(&layout, paint, bidiFlags, typeface);
506        layout.doLayout(textArray + index, count);
507        result = layout.getAdvance();
508#else
509        TextLayout::getTextRunAdvances(paint, textArray, index, count, textLength,
510                bidiFlags, NULL /* dont need all advances */, &result);
511#endif
512
513        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
514        return result;
515    }
516
517    static jfloat measureText_StringIII(JNIEnv* env, jobject jpaint, jstring text, jint start, jint end,
518            jint bidiFlags) {
519        NPE_CHECK_RETURN_ZERO(env, jpaint);
520        NPE_CHECK_RETURN_ZERO(env, text);
521
522        size_t textLength = env->GetStringLength(text);
523        int count = end - start;
524        if ((start | count) < 0 || (size_t)end > textLength) {
525            doThrowAIOOBE(env);
526            return 0;
527        }
528        if (count == 0) {
529            return 0;
530        }
531
532        const jchar* textArray = env->GetStringChars(text, NULL);
533        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
534        jfloat width = 0;
535
536#ifdef USE_MINIKIN
537        Layout layout;
538        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
539        MinikinUtils::SetLayoutProperties(&layout, paint, bidiFlags, typeface);
540        layout.doLayout(textArray + start, count);
541        width = layout.getAdvance();
542#else
543        TextLayout::getTextRunAdvances(paint, textArray, start, count, textLength,
544                bidiFlags, NULL /* dont need all advances */, &width);
545#endif
546
547        env->ReleaseStringChars(text, textArray);
548        return width;
549    }
550
551    static jfloat measureText_StringI(JNIEnv* env, jobject jpaint, jstring text, jint bidiFlags) {
552        NPE_CHECK_RETURN_ZERO(env, jpaint);
553        NPE_CHECK_RETURN_ZERO(env, text);
554
555        size_t textLength = env->GetStringLength(text);
556        if (textLength == 0) {
557            return 0;
558        }
559
560        const jchar* textArray = env->GetStringChars(text, NULL);
561        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
562        jfloat width = 0;
563
564#ifdef USE_MINIKIN
565        Layout layout;
566        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
567        MinikinUtils::SetLayoutProperties(&layout, paint, bidiFlags, typeface);
568        layout.doLayout(textArray, textLength);
569        width = layout.getAdvance();
570#else
571        TextLayout::getTextRunAdvances(paint, textArray, 0, textLength, textLength,
572                bidiFlags, NULL /* dont need all advances */, &width);
573#endif
574
575        env->ReleaseStringChars(text, textArray);
576        return width;
577    }
578
579    static int dotextwidths(JNIEnv* env, SkPaint* paint, TypefaceImpl* typeface, const jchar text[], int count,
580            jfloatArray widths, jint bidiFlags) {
581        NPE_CHECK_RETURN_ZERO(env, paint);
582        NPE_CHECK_RETURN_ZERO(env, text);
583
584        if (count < 0 || !widths) {
585            doThrowAIOOBE(env);
586            return 0;
587        }
588        if (count == 0) {
589            return 0;
590        }
591        size_t widthsLength = env->GetArrayLength(widths);
592        if ((size_t)count > widthsLength) {
593            doThrowAIOOBE(env);
594            return 0;
595        }
596
597        AutoJavaFloatArray autoWidths(env, widths, count);
598        jfloat* widthsArray = autoWidths.ptr();
599
600#ifdef USE_MINIKIN
601        Layout layout;
602        MinikinUtils::SetLayoutProperties(&layout, paint, bidiFlags, typeface);
603        layout.doLayout(text, count);
604        layout.getAdvances(widthsArray);
605#else
606        TextLayout::getTextRunAdvances(paint, text, 0, count, count,
607                bidiFlags, widthsArray, NULL /* dont need totalAdvance */);
608#endif
609
610        return count;
611    }
612
613    static jint getTextWidths___CIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray text,
614            jint index, jint count, jint bidiFlags, jfloatArray widths) {
615        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
616        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
617        const jchar* textArray = env->GetCharArrayElements(text, NULL);
618        count = dotextwidths(env, paint, typeface, textArray + index, count, widths, bidiFlags);
619        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
620                                      JNI_ABORT);
621        return count;
622    }
623
624    static jint getTextWidths__StringIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring text,
625            jint start, jint end, jint bidiFlags, jfloatArray widths) {
626        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
627        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
628        const jchar* textArray = env->GetStringChars(text, NULL);
629        int count = dotextwidths(env, paint, typeface, textArray + start, end - start, widths, bidiFlags);
630        env->ReleaseStringChars(text, textArray);
631        return count;
632    }
633
634    static int doTextGlyphs(JNIEnv* env, SkPaint* paint, const jchar* text, jint start, jint count,
635            jint contextCount, jint flags, jcharArray glyphs) {
636        NPE_CHECK_RETURN_ZERO(env, paint);
637        NPE_CHECK_RETURN_ZERO(env, text);
638
639        if ((start | count | contextCount) < 0 || contextCount < count || !glyphs) {
640            doThrowAIOOBE(env);
641            return 0;
642        }
643        if (count == 0) {
644            return 0;
645        }
646        size_t glypthsLength = env->GetArrayLength(glyphs);
647        if ((size_t)count > glypthsLength) {
648            doThrowAIOOBE(env);
649            return 0;
650        }
651
652        jchar* glyphsArray = env->GetCharArrayElements(glyphs, NULL);
653
654        sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
655                text, start, count, contextCount, flags);
656        const jchar* shapedGlyphs = value->getGlyphs();
657        size_t glyphsCount = value->getGlyphsCount();
658        memcpy(glyphsArray, shapedGlyphs, sizeof(jchar) * glyphsCount);
659
660        env->ReleaseCharArrayElements(glyphs, glyphsArray, JNI_ABORT);
661        return glyphsCount;
662    }
663
664    static jint getTextGlyphs__StringIIIII_C(JNIEnv* env, jobject clazz, jlong paintHandle,
665            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint flags,
666            jcharArray glyphs) {
667        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
668        const jchar* textArray = env->GetStringChars(text, NULL);
669        int count = doTextGlyphs(env, paint, textArray + contextStart, start - contextStart,
670                end - start, contextEnd - contextStart, flags, glyphs);
671        env->ReleaseStringChars(text, textArray);
672        return count;
673    }
674
675    static jfloat doTextRunAdvances(JNIEnv *env, SkPaint *paint, TypefaceImpl* typeface, const jchar *text,
676                                    jint start, jint count, jint contextCount, jint flags,
677                                    jfloatArray advances, jint advancesIndex) {
678        NPE_CHECK_RETURN_ZERO(env, paint);
679        NPE_CHECK_RETURN_ZERO(env, text);
680
681        if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
682            doThrowAIOOBE(env);
683            return 0;
684        }
685        if (count == 0) {
686            return 0;
687        }
688        if (advances) {
689            size_t advancesLength = env->GetArrayLength(advances);
690            if ((size_t)count > advancesLength) {
691                doThrowAIOOBE(env);
692                return 0;
693            }
694        }
695        jfloat* advancesArray = new jfloat[count];
696        jfloat totalAdvance = 0;
697
698#ifdef USE_MINIKIN
699        Layout layout;
700        MinikinUtils::SetLayoutProperties(&layout, paint, flags, typeface);
701        layout.doLayout(text + start, count);
702        layout.getAdvances(advancesArray);
703        totalAdvance = layout.getAdvance();
704#else
705        TextLayout::getTextRunAdvances(paint, text, start, count, contextCount, flags,
706                                       advancesArray, &totalAdvance);
707#endif
708
709        if (advances != NULL) {
710            env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray);
711        }
712        delete [] advancesArray;
713        return totalAdvance;
714    }
715
716    static jfloat getTextRunAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
717            jlong typefaceHandle,
718            jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
719            jint flags, jfloatArray advances, jint advancesIndex) {
720        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
721        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
722        jchar* textArray = env->GetCharArrayElements(text, NULL);
723        jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextIndex,
724                index - contextIndex, count, contextCount, flags, advances, advancesIndex);
725        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
726        return result;
727    }
728
729    static jfloat getTextRunAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
730            jlong typefaceHandle,
731            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint flags,
732            jfloatArray advances, jint advancesIndex) {
733        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
734        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
735        const jchar* textArray = env->GetStringChars(text, NULL);
736        jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextStart,
737                start - contextStart, end - start, contextEnd - contextStart, flags,
738                advances, advancesIndex);
739        env->ReleaseStringChars(text, textArray);
740        return result;
741    }
742
743    static jint doTextRunCursor(JNIEnv *env, SkPaint* paint, const jchar *text, jint start,
744            jint count, jint flags, jint offset, jint opt) {
745        jfloat scalarArray[count];
746
747        TextLayout::getTextRunAdvances(paint, text, start, count, start + count, flags,
748                scalarArray, NULL /* dont need totalAdvance */);
749
750        jint pos = offset - start;
751        switch (opt) {
752        case AFTER:
753          if (pos < count) {
754            pos += 1;
755          }
756          // fall through
757        case AT_OR_AFTER:
758          while (pos < count && scalarArray[pos] == 0) {
759            ++pos;
760          }
761          break;
762        case BEFORE:
763          if (pos > 0) {
764            --pos;
765          }
766          // fall through
767        case AT_OR_BEFORE:
768          while (pos > 0 && scalarArray[pos] == 0) {
769            --pos;
770          }
771          break;
772        case AT:
773        default:
774          if (scalarArray[pos] == 0) {
775            pos = -1;
776          }
777          break;
778        }
779
780        if (pos != -1) {
781          pos += start;
782        }
783
784        return pos;
785    }
786
787    static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
788            jint contextStart, jint contextCount, jint flags, jint offset, jint cursorOpt) {
789        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
790        jchar* textArray = env->GetCharArrayElements(text, NULL);
791        jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, flags,
792                offset, cursorOpt);
793        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
794        return result;
795    }
796
797    static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text,
798            jint contextStart, jint contextEnd, jint flags, jint offset, jint cursorOpt) {
799        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
800        const jchar* textArray = env->GetStringChars(text, NULL);
801        jint result = doTextRunCursor(env, paint, textArray, contextStart,
802                contextEnd - contextStart, flags, offset, cursorOpt);
803        env->ReleaseStringChars(text, textArray);
804        return result;
805    }
806
807    static void getTextPath(JNIEnv* env, SkPaint* paint, const jchar* text, jint count,
808                            jint bidiFlags, jfloat x, jfloat y, SkPath *path) {
809        TextLayout::getTextPath(paint, text, count, bidiFlags, x, y, path);
810    }
811
812    static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle, jint bidiFlags,
813            jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
814        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
815        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
816        const jchar* textArray = env->GetCharArrayElements(text, NULL);
817        getTextPath(env, paint, textArray + index, count, bidiFlags, x, y, path);
818        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
819    }
820
821    static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle, jint bidiFlags,
822            jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
823        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
824        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
825        const jchar* textArray = env->GetStringChars(text, NULL);
826        getTextPath(env, paint, textArray + start, end - start, bidiFlags, x, y, path);
827        env->ReleaseStringChars(text, textArray);
828    }
829
830    static void setShadowLayer(JNIEnv* env, jobject jpaint, jfloat radius,
831                               jfloat dx, jfloat dy, jint color) {
832        NPE_CHECK_RETURN_VOID(env, jpaint);
833
834        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
835        if (radius <= 0) {
836            paint->setLooper(NULL);
837        }
838        else {
839            paint->setLooper(new SkBlurDrawLooper(radius, dx, dy, (SkColor)color))->unref();
840        }
841    }
842
843    static int breakText(JNIEnv* env, SkPaint& paint, const jchar text[],
844                         int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
845                         SkPaint::TextBufferDirection tbd) {
846        sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(&paint,
847                text, 0, count, count, bidiFlags);
848        if (value == NULL) {
849            return 0;
850        }
851        SkScalar     measured;
852        size_t       bytes = paint.breakText(value->getGlyphs(), value->getGlyphsCount() << 1,
853                maxWidth, &measured, tbd);
854        SkASSERT((bytes & 1) == 0);
855
856        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
857            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
858            jfloat* array = autoMeasured.ptr();
859            array[0] = SkScalarToFloat(measured);
860        }
861        return bytes >> 1;
862    }
863
864    static jint breakTextC(JNIEnv* env, jobject jpaint, jcharArray jtext,
865            jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
866        NPE_CHECK_RETURN_ZERO(env, jpaint);
867        NPE_CHECK_RETURN_ZERO(env, jtext);
868
869        SkPaint::TextBufferDirection tbd;
870        if (count < 0) {
871            tbd = SkPaint::kBackward_TextBufferDirection;
872            count = -count;
873        }
874        else {
875            tbd = SkPaint::kForward_TextBufferDirection;
876        }
877
878        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
879            doThrowAIOOBE(env);
880            return 0;
881        }
882
883        SkPaint*     paint = GraphicsJNI::getNativePaint(env, jpaint);
884        const jchar* text = env->GetCharArrayElements(jtext, NULL);
885        count = breakText(env, *paint, text + index, count, maxWidth,
886                          bidiFlags, jmeasuredWidth, tbd);
887        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
888                                      JNI_ABORT);
889        return count;
890    }
891
892    static jint breakTextS(JNIEnv* env, jobject jpaint, jstring jtext,
893                jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
894        NPE_CHECK_RETURN_ZERO(env, jpaint);
895        NPE_CHECK_RETURN_ZERO(env, jtext);
896
897        SkPaint::TextBufferDirection tbd = forwards ?
898                                        SkPaint::kForward_TextBufferDirection :
899                                        SkPaint::kBackward_TextBufferDirection;
900
901        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
902        int count = env->GetStringLength(jtext);
903        const jchar* text = env->GetStringChars(jtext, NULL);
904        count = breakText(env, *paint, text, count, maxWidth, bidiFlags, jmeasuredWidth, tbd);
905        env->ReleaseStringChars(jtext, text);
906        return count;
907    }
908
909    static void doTextBounds(JNIEnv* env, const jchar* text, int count,
910                             jobject bounds, const SkPaint& paint, jint bidiFlags) {
911        SkRect  r;
912        SkIRect ir;
913
914        sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(&paint,
915                text, 0, count, count, bidiFlags);
916        if (value == NULL) {
917            return;
918        }
919        paint.measureText(value->getGlyphs(), value->getGlyphsCount() << 1, &r);
920        r.roundOut(&ir);
921        GraphicsJNI::irect_to_jrect(ir, env, bounds);
922    }
923
924    static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle,
925                                jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
926        const SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);;
927        const jchar* textArray = env->GetStringChars(text, NULL);
928        doTextBounds(env, textArray + start, end - start, bounds, *paint, bidiFlags);
929        env->ReleaseStringChars(text, textArray);
930    }
931
932    static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle,
933                        jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
934        const SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
935        const jchar* textArray = env->GetCharArrayElements(text, NULL);
936        doTextBounds(env, textArray + index, count, bounds, *paint, bidiFlags);
937        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
938                                      JNI_ABORT);
939    }
940
941};
942
943static JNINativeMethod methods[] = {
944    {"finalizer", "(J)V", (void*) SkPaintGlue::finalizer},
945    {"native_init","()J", (void*) SkPaintGlue::init},
946    {"native_initWithPaint","(J)J", (void*) SkPaintGlue::initWithPaint},
947    {"native_reset","(J)V", (void*) SkPaintGlue::reset},
948    {"native_set","(JJ)V", (void*) SkPaintGlue::assign},
949    {"getFlags","()I", (void*) SkPaintGlue::getFlags},
950    {"setFlags","(I)V", (void*) SkPaintGlue::setFlags},
951    {"getHinting","()I", (void*) SkPaintGlue::getHinting},
952    {"setHinting","(I)V", (void*) SkPaintGlue::setHinting},
953    {"setAntiAlias","(Z)V", (void*) SkPaintGlue::setAntiAlias},
954    {"setSubpixelText","(Z)V", (void*) SkPaintGlue::setSubpixelText},
955    {"setLinearText","(Z)V", (void*) SkPaintGlue::setLinearText},
956    {"setUnderlineText","(Z)V", (void*) SkPaintGlue::setUnderlineText},
957    {"setStrikeThruText","(Z)V", (void*) SkPaintGlue::setStrikeThruText},
958    {"setFakeBoldText","(Z)V", (void*) SkPaintGlue::setFakeBoldText},
959    {"setFilterBitmap","(Z)V", (void*) SkPaintGlue::setFilterBitmap},
960    {"setDither","(Z)V", (void*) SkPaintGlue::setDither},
961    {"native_getStyle","(J)I", (void*) SkPaintGlue::getStyle},
962    {"native_setStyle","(JI)V", (void*) SkPaintGlue::setStyle},
963    {"getColor","()I", (void*) SkPaintGlue::getColor},
964    {"setColor","(I)V", (void*) SkPaintGlue::setColor},
965    {"getAlpha","()I", (void*) SkPaintGlue::getAlpha},
966    {"setAlpha","(I)V", (void*) SkPaintGlue::setAlpha},
967    {"getStrokeWidth","()F", (void*) SkPaintGlue::getStrokeWidth},
968    {"setStrokeWidth","(F)V", (void*) SkPaintGlue::setStrokeWidth},
969    {"getStrokeMiter","()F", (void*) SkPaintGlue::getStrokeMiter},
970    {"setStrokeMiter","(F)V", (void*) SkPaintGlue::setStrokeMiter},
971    {"native_getStrokeCap","(J)I", (void*) SkPaintGlue::getStrokeCap},
972    {"native_setStrokeCap","(JI)V", (void*) SkPaintGlue::setStrokeCap},
973    {"native_getStrokeJoin","(J)I", (void*) SkPaintGlue::getStrokeJoin},
974    {"native_setStrokeJoin","(JI)V", (void*) SkPaintGlue::setStrokeJoin},
975    {"native_getFillPath","(JJJ)Z", (void*) SkPaintGlue::getFillPath},
976    {"native_setShader","(JJ)J", (void*) SkPaintGlue::setShader},
977    {"native_setColorFilter","(JJ)J", (void*) SkPaintGlue::setColorFilter},
978    {"native_setXfermode","(JJ)J", (void*) SkPaintGlue::setXfermode},
979    {"native_setPathEffect","(JJ)J", (void*) SkPaintGlue::setPathEffect},
980    {"native_setMaskFilter","(JJ)J", (void*) SkPaintGlue::setMaskFilter},
981    {"native_setTypeface","(JJ)J", (void*) SkPaintGlue::setTypeface},
982    {"native_setRasterizer","(JJ)J", (void*) SkPaintGlue::setRasterizer},
983    {"native_getTextAlign","(J)I", (void*) SkPaintGlue::getTextAlign},
984    {"native_setTextAlign","(JI)V", (void*) SkPaintGlue::setTextAlign},
985    {"native_setTextLocale","(JLjava/lang/String;)V", (void*) SkPaintGlue::setTextLocale},
986    {"isElegantTextHeight","()Z", (void*) SkPaintGlue::isElegantTextHeight},
987    {"setElegantTextHeight","(Z)V", (void*) SkPaintGlue::setElegantTextHeight},
988    {"getTextSize","()F", (void*) SkPaintGlue::getTextSize},
989    {"setTextSize","(F)V", (void*) SkPaintGlue::setTextSize},
990    {"getTextScaleX","()F", (void*) SkPaintGlue::getTextScaleX},
991    {"setTextScaleX","(F)V", (void*) SkPaintGlue::setTextScaleX},
992    {"getTextSkewX","()F", (void*) SkPaintGlue::getTextSkewX},
993    {"setTextSkewX","(F)V", (void*) SkPaintGlue::setTextSkewX},
994    {"ascent","()F", (void*) SkPaintGlue::ascent},
995    {"descent","()F", (void*) SkPaintGlue::descent},
996    {"getFontMetrics", "(Landroid/graphics/Paint$FontMetrics;)F", (void*)SkPaintGlue::getFontMetrics},
997    {"getFontMetricsInt", "(Landroid/graphics/Paint$FontMetricsInt;)I", (void*)SkPaintGlue::getFontMetricsInt},
998    {"native_measureText","([CIII)F", (void*) SkPaintGlue::measureText_CIII},
999    {"native_measureText","(Ljava/lang/String;I)F", (void*) SkPaintGlue::measureText_StringI},
1000    {"native_measureText","(Ljava/lang/String;III)F", (void*) SkPaintGlue::measureText_StringIII},
1001    {"native_breakText","([CIIFI[F)I", (void*) SkPaintGlue::breakTextC},
1002    {"native_breakText","(Ljava/lang/String;ZFI[F)I", (void*) SkPaintGlue::breakTextS},
1003    {"native_getTextWidths","(JJ[CIII[F)I", (void*) SkPaintGlue::getTextWidths___CIII_F},
1004    {"native_getTextWidths","(JJLjava/lang/String;III[F)I", (void*) SkPaintGlue::getTextWidths__StringIII_F},
1005    {"native_getTextRunAdvances","(JJ[CIIIII[FI)F",
1006        (void*) SkPaintGlue::getTextRunAdvances___CIIIII_FI},
1007    {"native_getTextRunAdvances","(JJLjava/lang/String;IIIII[FI)F",
1008        (void*) SkPaintGlue::getTextRunAdvances__StringIIIII_FI},
1009
1010
1011    {"native_getTextGlyphs","(JLjava/lang/String;IIIII[C)I",
1012        (void*) SkPaintGlue::getTextGlyphs__StringIIIII_C},
1013    {"native_getTextRunCursor", "(J[CIIIII)I", (void*) SkPaintGlue::getTextRunCursor___C},
1014    {"native_getTextRunCursor", "(JLjava/lang/String;IIIII)I",
1015        (void*) SkPaintGlue::getTextRunCursor__String},
1016    {"native_getTextPath","(JI[CIIFFJ)V", (void*) SkPaintGlue::getTextPath___C},
1017    {"native_getTextPath","(JILjava/lang/String;IIFFJ)V", (void*) SkPaintGlue::getTextPath__String},
1018    {"nativeGetStringBounds", "(JLjava/lang/String;IIILandroid/graphics/Rect;)V",
1019                                        (void*) SkPaintGlue::getStringBounds },
1020    {"nativeGetCharArrayBounds", "(J[CIIILandroid/graphics/Rect;)V",
1021                                    (void*) SkPaintGlue::getCharArrayBounds },
1022    {"nSetShadowLayer", "(FFFI)V", (void*)SkPaintGlue::setShadowLayer}
1023};
1024
1025static jfieldID req_fieldID(jfieldID id) {
1026    SkASSERT(id);
1027    return id;
1028}
1029
1030int register_android_graphics_Paint(JNIEnv* env) {
1031    gFontMetrics_class = env->FindClass("android/graphics/Paint$FontMetrics");
1032    SkASSERT(gFontMetrics_class);
1033    gFontMetrics_class = (jclass)env->NewGlobalRef(gFontMetrics_class);
1034
1035    gFontMetrics_fieldID.top = req_fieldID(env->GetFieldID(gFontMetrics_class, "top", "F"));
1036    gFontMetrics_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetrics_class, "ascent", "F"));
1037    gFontMetrics_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetrics_class, "descent", "F"));
1038    gFontMetrics_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetrics_class, "bottom", "F"));
1039    gFontMetrics_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetrics_class, "leading", "F"));
1040
1041    gFontMetricsInt_class = env->FindClass("android/graphics/Paint$FontMetricsInt");
1042    SkASSERT(gFontMetricsInt_class);
1043    gFontMetricsInt_class = (jclass)env->NewGlobalRef(gFontMetricsInt_class);
1044
1045    gFontMetricsInt_fieldID.top = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "top", "I"));
1046    gFontMetricsInt_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "ascent", "I"));
1047    gFontMetricsInt_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "descent", "I"));
1048    gFontMetricsInt_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "bottom", "I"));
1049    gFontMetricsInt_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "leading", "I"));
1050
1051    int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Paint", methods,
1052        sizeof(methods) / sizeof(methods[0]));
1053    return result;
1054}
1055
1056}
1057