Paint.cpp revision 2c53a0759742eeec8f123ad81b7a26aef222c378 
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 "core_jni_helpers.h"
25#include <ScopedStringChars.h>
26#include <ScopedUtfChars.h>
27
28#include "SkBlurDrawLooper.h"
29#include "SkColorFilter.h"
30#include "SkMaskFilter.h"
31#include "SkRasterizer.h"
32#include "SkShader.h"
33#include "SkTypeface.h"
34#include "SkXfermode.h"
35#include "unicode/uloc.h"
36#include "unicode/ushape.h"
37#include "utils/Blur.h"
38
39#include <minikin/GraphemeBreak.h>
40#include <minikin/Measurement.h>
41#include "MinikinSkia.h"
42#include "MinikinUtils.h"
43#include "Paint.h"
44#include "TypefaceImpl.h"
45
46#include <vector>
47#include <memory>
48
49// temporary for debugging
50#include <Caches.h>
51#include <utils/Log.h>
52
53namespace android {
54
55struct JMetricsID {
56    jfieldID    top;
57    jfieldID    ascent;
58    jfieldID    descent;
59    jfieldID    bottom;
60    jfieldID    leading;
61};
62
63static jclass   gFontMetrics_class;
64static JMetricsID gFontMetrics_fieldID;
65
66static jclass   gFontMetricsInt_class;
67static JMetricsID gFontMetricsInt_fieldID;
68
69static jclass   gPaint_class;
70static jfieldID gPaint_nativeInstanceID;
71static jfieldID gPaint_nativeTypefaceID;
72
73static void defaultSettingsForAndroid(Paint* paint) {
74    // GlyphID encoding is required because we are using Harfbuzz shaping
75    paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
76}
77
78struct LocaleCacheEntry {
79    std::string javaLocale;
80    std::string languageTag;
81};
82
83static thread_local LocaleCacheEntry sSingleEntryLocaleCache;
84
85class PaintGlue {
86public:
87    enum MoveOpt {
88        AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
89    };
90
91    static Paint* getNativePaint(JNIEnv* env, jobject paint) {
92        SkASSERT(env);
93        SkASSERT(paint);
94        SkASSERT(env->IsInstanceOf(paint, gPaint_class));
95        jlong paintHandle = env->GetLongField(paint, gPaint_nativeInstanceID);
96        android::Paint* p = reinterpret_cast<android::Paint*>(paintHandle);
97        SkASSERT(p);
98        return p;
99    }
100
101    static TypefaceImpl* getNativeTypeface(JNIEnv* env, jobject paint) {
102        SkASSERT(env);
103        SkASSERT(paint);
104        SkASSERT(env->IsInstanceOf(paint, gPaint_class));
105        jlong typefaceHandle = env->GetLongField(paint, gPaint_nativeTypefaceID);
106        android::TypefaceImpl* p = reinterpret_cast<android::TypefaceImpl*>(typefaceHandle);
107        return p;
108    }
109
110    static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
111        Paint* obj = reinterpret_cast<Paint*>(objHandle);
112        delete obj;
113    }
114
115    static jlong init(JNIEnv* env, jobject clazz) {
116        static_assert(1 <<  0 == SkPaint::kAntiAlias_Flag,          "paint_flags_mismatch");
117        static_assert(1 <<  2 == SkPaint::kDither_Flag,             "paint_flags_mismatch");
118        static_assert(1 <<  3 == SkPaint::kUnderlineText_Flag,      "paint_flags_mismatch");
119        static_assert(1 <<  4 == SkPaint::kStrikeThruText_Flag,     "paint_flags_mismatch");
120        static_assert(1 <<  5 == SkPaint::kFakeBoldText_Flag,       "paint_flags_mismatch");
121        static_assert(1 <<  6 == SkPaint::kLinearText_Flag,         "paint_flags_mismatch");
122        static_assert(1 <<  7 == SkPaint::kSubpixelText_Flag,       "paint_flags_mismatch");
123        static_assert(1 <<  8 == SkPaint::kDevKernText_Flag,        "paint_flags_mismatch");
124        static_assert(1 << 10 == SkPaint::kEmbeddedBitmapText_Flag, "paint_flags_mismatch");
125
126        Paint* obj = new Paint();
127        defaultSettingsForAndroid(obj);
128        return reinterpret_cast<jlong>(obj);
129    }
130
131    static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
132        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
133        Paint* obj = new Paint(*paint);
134        return reinterpret_cast<jlong>(obj);
135    }
136
137    static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
138        Paint* obj = reinterpret_cast<Paint*>(objHandle);
139        obj->reset();
140        defaultSettingsForAndroid(obj);
141    }
142
143    static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) {
144        Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle);
145        const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle);
146        *dst = *src;
147    }
148
149    // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
150    static const uint32_t sFilterBitmapFlag = 0x02;
151
152    static jint getFlags(JNIEnv* env, jobject paint) {
153        NPE_CHECK_RETURN_ZERO(env, paint);
154        Paint* nativePaint = getNativePaint(env, paint);
155        uint32_t result = nativePaint->getFlags();
156        result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away.
157        if (nativePaint->getFilterQuality() != kNone_SkFilterQuality) {
158            result |= sFilterBitmapFlag;
159        }
160        return static_cast<jint>(result);
161    }
162
163    static void setFlags(JNIEnv* env, jobject paint, jint flags) {
164        NPE_CHECK_RETURN_VOID(env, paint);
165        Paint* nativePaint = getNativePaint(env, paint);
166        // Instead of modifying 0x02, change the filter level.
167        nativePaint->setFilterQuality(flags & sFilterBitmapFlag
168                ? kLow_SkFilterQuality
169                : kNone_SkFilterQuality);
170        // Don't pass through filter flag, which is no longer stored in paint's flags.
171        flags &= ~sFilterBitmapFlag;
172        // Use the existing value for 0x02.
173        const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag;
174        flags |= existing0x02Flag;
175        nativePaint->setFlags(flags);
176    }
177
178    static jint getHinting(JNIEnv* env, jobject paint) {
179        NPE_CHECK_RETURN_ZERO(env, paint);
180        return getNativePaint(env, paint)->getHinting()
181                == Paint::kNo_Hinting ? 0 : 1;
182    }
183
184    static void setHinting(JNIEnv* env, jobject paint, jint mode) {
185        NPE_CHECK_RETURN_VOID(env, paint);
186        getNativePaint(env, paint)->setHinting(
187                mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting);
188    }
189
190    static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) {
191        NPE_CHECK_RETURN_VOID(env, paint);
192        getNativePaint(env, paint)->setAntiAlias(aa);
193    }
194
195    static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) {
196        NPE_CHECK_RETURN_VOID(env, paint);
197        getNativePaint(env, paint)->setLinearText(linearText);
198    }
199
200    static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) {
201        NPE_CHECK_RETURN_VOID(env, paint);
202        getNativePaint(env, paint)->setSubpixelText(subpixelText);
203    }
204
205    static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) {
206        NPE_CHECK_RETURN_VOID(env, paint);
207        getNativePaint(env, paint)->setUnderlineText(underlineText);
208    }
209
210    static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) {
211        NPE_CHECK_RETURN_VOID(env, paint);
212        getNativePaint(env, paint)->setStrikeThruText(strikeThruText);
213    }
214
215    static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) {
216        NPE_CHECK_RETURN_VOID(env, paint);
217        getNativePaint(env, paint)->setFakeBoldText(fakeBoldText);
218    }
219
220    static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) {
221        NPE_CHECK_RETURN_VOID(env, paint);
222        getNativePaint(env, paint)->setFilterQuality(
223                filterBitmap ? kLow_SkFilterQuality : kNone_SkFilterQuality);
224    }
225
226    static void setDither(JNIEnv* env, jobject paint, jboolean dither) {
227        NPE_CHECK_RETURN_VOID(env, paint);
228        getNativePaint(env, paint)->setDither(dither);
229    }
230
231    static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) {
232        Paint* obj = reinterpret_cast<Paint*>(objHandle);
233        return static_cast<jint>(obj->getStyle());
234    }
235
236    static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) {
237        Paint* obj = reinterpret_cast<Paint*>(objHandle);
238        Paint::Style style = static_cast<Paint::Style>(styleHandle);
239        obj->setStyle(style);
240    }
241
242    static jint getColor(JNIEnv* env, jobject paint) {
243        NPE_CHECK_RETURN_ZERO(env, paint);
244        int color;
245        color = getNativePaint(env, paint)->getColor();
246        return static_cast<jint>(color);
247    }
248
249    static jint getAlpha(JNIEnv* env, jobject paint) {
250        NPE_CHECK_RETURN_ZERO(env, paint);
251        int alpha;
252        alpha = getNativePaint(env, paint)->getAlpha();
253        return static_cast<jint>(alpha);
254    }
255
256    static void setColor(JNIEnv* env, jobject paint, jint color) {
257        NPE_CHECK_RETURN_VOID(env, paint);
258        getNativePaint(env, paint)->setColor(color);
259    }
260
261    static void setAlpha(JNIEnv* env, jobject paint, jint a) {
262        NPE_CHECK_RETURN_VOID(env, paint);
263        getNativePaint(env, paint)->setAlpha(a);
264    }
265
266    static jfloat getStrokeWidth(JNIEnv* env, jobject paint) {
267        NPE_CHECK_RETURN_ZERO(env, paint);
268        return SkScalarToFloat(getNativePaint(env, paint)->getStrokeWidth());
269    }
270
271    static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) {
272        NPE_CHECK_RETURN_VOID(env, paint);
273        getNativePaint(env, paint)->setStrokeWidth(width);
274    }
275
276    static jfloat getStrokeMiter(JNIEnv* env, jobject paint) {
277        NPE_CHECK_RETURN_ZERO(env, paint);
278        return SkScalarToFloat(getNativePaint(env, paint)->getStrokeMiter());
279    }
280
281    static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) {
282        NPE_CHECK_RETURN_VOID(env, paint);
283        getNativePaint(env, paint)->setStrokeMiter(miter);
284    }
285
286    static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) {
287        Paint* obj = reinterpret_cast<Paint*>(objHandle);
288        return static_cast<jint>(obj->getStrokeCap());
289    }
290
291    static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) {
292        Paint* obj = reinterpret_cast<Paint*>(objHandle);
293        Paint::Cap cap = static_cast<Paint::Cap>(capHandle);
294        obj->setStrokeCap(cap);
295    }
296
297    static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) {
298        Paint* obj = reinterpret_cast<Paint*>(objHandle);
299        return static_cast<jint>(obj->getStrokeJoin());
300    }
301
302    static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) {
303        Paint* obj = reinterpret_cast<Paint*>(objHandle);
304        Paint::Join join = (Paint::Join) joinHandle;
305        obj->setStrokeJoin(join);
306    }
307
308    static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) {
309        Paint* obj = reinterpret_cast<Paint*>(objHandle);
310        SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
311        SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
312        return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
313    }
314
315    static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) {
316        Paint* obj = reinterpret_cast<Paint*>(objHandle);
317        SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
318        return reinterpret_cast<jlong>(obj->setShader(shader));
319    }
320
321    static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) {
322        Paint* obj = reinterpret_cast<Paint *>(objHandle);
323        SkColorFilter* filter  = reinterpret_cast<SkColorFilter *>(filterHandle);
324        return reinterpret_cast<jlong>(obj->setColorFilter(filter));
325    }
326
327    static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) {
328        Paint* obj = reinterpret_cast<Paint*>(objHandle);
329        SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle);
330        return reinterpret_cast<jlong>(obj->setXfermode(xfermode));
331    }
332
333    static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) {
334        Paint* obj = reinterpret_cast<Paint*>(objHandle);
335        SkPathEffect* effect  = reinterpret_cast<SkPathEffect*>(effectHandle);
336        return reinterpret_cast<jlong>(obj->setPathEffect(effect));
337    }
338
339    static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) {
340        Paint* obj = reinterpret_cast<Paint*>(objHandle);
341        SkMaskFilter* maskfilter  = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
342        return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter));
343    }
344
345    static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) {
346        // TODO: in Paint refactoring, set typeface on android Paint, not Paint
347        return NULL;
348    }
349
350    static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) {
351        Paint* obj = reinterpret_cast<Paint*>(objHandle);
352        SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle));
353        return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer));
354    }
355
356    static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) {
357        Paint* obj = reinterpret_cast<Paint*>(objHandle);
358        return static_cast<jint>(obj->getTextAlign());
359    }
360
361    static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) {
362        Paint* obj = reinterpret_cast<Paint*>(objHandle);
363        Paint::Align align = static_cast<Paint::Align>(alignHandle);
364        obj->setTextAlign(align);
365    }
366
367    // generate bcp47 identifier for the supplied locale
368    static void toLanguageTag(char* output, size_t outSize,
369            const char* locale) {
370        if (output == NULL || outSize <= 0) {
371            return;
372        }
373        if (locale == NULL) {
374            output[0] = '\0';
375            return;
376        }
377        char canonicalChars[ULOC_FULLNAME_CAPACITY];
378        UErrorCode uErr = U_ZERO_ERROR;
379        uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY,
380                &uErr);
381        if (U_SUCCESS(uErr)) {
382            char likelyChars[ULOC_FULLNAME_CAPACITY];
383            uErr = U_ZERO_ERROR;
384            uloc_addLikelySubtags(canonicalChars, likelyChars,
385                    ULOC_FULLNAME_CAPACITY, &uErr);
386            if (U_SUCCESS(uErr)) {
387                uErr = U_ZERO_ERROR;
388                uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr);
389                if (U_SUCCESS(uErr)) {
390                    return;
391                } else {
392                    ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars,
393                            u_errorName(uErr));
394                }
395            } else {
396                ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s",
397                        canonicalChars, u_errorName(uErr));
398            }
399        } else {
400            ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale,
401                    u_errorName(uErr));
402        }
403        // unable to build a proper language identifier
404        output[0] = '\0';
405    }
406
407    static void setTextLocale(JNIEnv* env, jobject clazz, jlong objHandle, jstring locale) {
408        Paint* obj = reinterpret_cast<Paint*>(objHandle);
409        ScopedUtfChars localeChars(env, locale);
410        if (sSingleEntryLocaleCache.javaLocale != localeChars.c_str()) {
411            sSingleEntryLocaleCache.javaLocale = localeChars.c_str();
412            char langTag[ULOC_FULLNAME_CAPACITY];
413            toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, localeChars.c_str());
414            sSingleEntryLocaleCache.languageTag = langTag;
415        }
416
417        obj->setTextLocale(sSingleEntryLocaleCache.languageTag);
418    }
419
420    static jboolean isElegantTextHeight(JNIEnv* env, jobject paint) {
421        NPE_CHECK_RETURN_ZERO(env, paint);
422        Paint* obj = getNativePaint(env, paint);
423        return obj->getFontVariant() == VARIANT_ELEGANT;
424    }
425
426    static void setElegantTextHeight(JNIEnv* env, jobject paint, jboolean aa) {
427        NPE_CHECK_RETURN_VOID(env, paint);
428        Paint* obj = getNativePaint(env, paint);
429        obj->setFontVariant(aa ? VARIANT_ELEGANT : VARIANT_DEFAULT);
430    }
431
432    static jfloat getTextSize(JNIEnv* env, jobject paint) {
433        NPE_CHECK_RETURN_ZERO(env, paint);
434        return SkScalarToFloat(getNativePaint(env, paint)->getTextSize());
435    }
436
437    static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) {
438        NPE_CHECK_RETURN_VOID(env, paint);
439        getNativePaint(env, paint)->setTextSize(textSize);
440    }
441
442    static jfloat getTextScaleX(JNIEnv* env, jobject paint) {
443        NPE_CHECK_RETURN_ZERO(env, paint);
444        return SkScalarToFloat(getNativePaint(env, paint)->getTextScaleX());
445    }
446
447    static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) {
448        NPE_CHECK_RETURN_VOID(env, paint);
449        getNativePaint(env, paint)->setTextScaleX(scaleX);
450    }
451
452    static jfloat getTextSkewX(JNIEnv* env, jobject paint) {
453        NPE_CHECK_RETURN_ZERO(env, paint);
454        return SkScalarToFloat(getNativePaint(env, paint)->getTextSkewX());
455    }
456
457    static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) {
458        NPE_CHECK_RETURN_VOID(env, paint);
459        getNativePaint(env, paint)->setTextSkewX(skewX);
460    }
461
462    static jfloat getLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle) {
463        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
464        return paint->getLetterSpacing();
465    }
466
467    static void setLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat letterSpacing) {
468        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
469        paint->setLetterSpacing(letterSpacing);
470    }
471
472    static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) {
473        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
474        if (!settings) {
475            paint->setFontFeatureSettings(std::string());
476        } else {
477            ScopedUtfChars settingsChars(env, settings);
478            paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size()));
479        }
480    }
481
482    static jint getHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) {
483        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
484        return paint->getHyphenEdit();
485    }
486
487    static void setHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) {
488        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
489        paint->setHyphenEdit((uint32_t)hyphen);
490    }
491
492    static SkScalar getMetricsInternal(JNIEnv* env, jobject jpaint, Paint::FontMetrics *metrics) {
493        const int kElegantTop = 2500;
494        const int kElegantBottom = -1000;
495        const int kElegantAscent = 1900;
496        const int kElegantDescent = -500;
497        const int kElegantLeading = 0;
498        Paint* paint = getNativePaint(env, jpaint);
499        TypefaceImpl* typeface = getNativeTypeface(env, jpaint);
500        typeface = TypefaceImpl_resolveDefault(typeface);
501        FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle);
502        float saveSkewX = paint->getTextSkewX();
503        bool savefakeBold = paint->isFakeBoldText();
504        MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery);
505        SkScalar spacing = paint->getFontMetrics(metrics);
506        // The populateSkPaint call may have changed fake bold / text skew
507        // because we want to measure with those effects applied, so now
508        // restore the original settings.
509        paint->setTextSkewX(saveSkewX);
510        paint->setFakeBoldText(savefakeBold);
511        if (paint->getFontVariant() == VARIANT_ELEGANT) {
512            SkScalar size = paint->getTextSize();
513            metrics->fTop = -size * kElegantTop / 2048;
514            metrics->fBottom = -size * kElegantBottom / 2048;
515            metrics->fAscent = -size * kElegantAscent / 2048;
516            metrics->fDescent = -size * kElegantDescent / 2048;
517            metrics->fLeading = size * kElegantLeading / 2048;
518            spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
519        }
520        return spacing;
521    }
522
523    static jfloat ascent(JNIEnv* env, jobject paint) {
524        NPE_CHECK_RETURN_ZERO(env, paint);
525        Paint::FontMetrics metrics;
526        getMetricsInternal(env, paint, &metrics);
527        return SkScalarToFloat(metrics.fAscent);
528    }
529
530    static jfloat descent(JNIEnv* env, jobject paint) {
531        NPE_CHECK_RETURN_ZERO(env, paint);
532        Paint::FontMetrics metrics;
533        getMetricsInternal(env, paint, &metrics);
534        return SkScalarToFloat(metrics.fDescent);
535    }
536
537    static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) {
538        NPE_CHECK_RETURN_ZERO(env, paint);
539        Paint::FontMetrics metrics;
540        SkScalar spacing = getMetricsInternal(env, paint, &metrics);
541
542        if (metricsObj) {
543            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
544            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
545            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
546            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
547            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
548            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
549        }
550        return SkScalarToFloat(spacing);
551    }
552
553    static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) {
554        NPE_CHECK_RETURN_ZERO(env, paint);
555        Paint::FontMetrics metrics;
556
557        getMetricsInternal(env, paint, &metrics);
558        int ascent = SkScalarRoundToInt(metrics.fAscent);
559        int descent = SkScalarRoundToInt(metrics.fDescent);
560        int leading = SkScalarRoundToInt(metrics.fLeading);
561
562        if (metricsObj) {
563            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
564            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
565            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
566            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
567            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
568            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
569        }
570        return descent - ascent + leading;
571    }
572
573    static jfloat doTextAdvances(JNIEnv *env, Paint *paint, TypefaceImpl* typeface,
574            const jchar *text, jint start, jint count, jint contextCount, jint bidiFlags,
575            jfloatArray advances, jint advancesIndex) {
576        NPE_CHECK_RETURN_ZERO(env, paint);
577        NPE_CHECK_RETURN_ZERO(env, text);
578
579        if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
580            doThrowAIOOBE(env);
581            return 0;
582        }
583        if (count == 0) {
584            return 0;
585        }
586        if (advances) {
587            size_t advancesLength = env->GetArrayLength(advances);
588            if ((size_t)(count  + advancesIndex) > advancesLength) {
589                doThrowAIOOBE(env);
590                return 0;
591            }
592        }
593
594        Layout layout;
595        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, start, count,
596                contextCount);
597        if (advances != NULL) {
598            std::unique_ptr<jfloat> advancesArray(new jfloat[count]);
599            layout.getAdvances(advancesArray.get());
600            env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray.get());
601        }
602        return layout.getAdvance();
603    }
604
605    static jfloat getTextAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
606            jlong typefaceHandle,
607            jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
608            jint bidiFlags, jfloatArray advances, jint advancesIndex) {
609        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
610        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
611        jchar* textArray = env->GetCharArrayElements(text, NULL);
612        jfloat result = doTextAdvances(env, paint, typeface, textArray + contextIndex,
613                index - contextIndex, count, contextCount, bidiFlags, advances, advancesIndex);
614        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
615        return result;
616    }
617
618    static jfloat getTextAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
619            jlong typefaceHandle,
620            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint bidiFlags,
621            jfloatArray advances, jint advancesIndex) {
622        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
623        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
624        const jchar* textArray = env->GetStringChars(text, NULL);
625        jfloat result = doTextAdvances(env, paint, typeface, textArray + contextStart,
626                start - contextStart, end - start, contextEnd - contextStart, bidiFlags,
627                advances, advancesIndex);
628        env->ReleaseStringChars(text, textArray);
629        return result;
630    }
631
632    static jint doTextRunCursor(JNIEnv *env, Paint* paint, const jchar *text, jint start,
633            jint count, jint flags, jint offset, jint opt) {
634        GraphemeBreak::MoveOpt moveOpt = GraphemeBreak::MoveOpt(opt);
635        size_t result = GraphemeBreak::getTextRunCursor(text, start, count, offset, moveOpt);
636        return static_cast<jint>(result);
637    }
638
639    static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
640            jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) {
641        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
642        jchar* textArray = env->GetCharArrayElements(text, NULL);
643        jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, dir,
644                offset, cursorOpt);
645        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
646        return result;
647    }
648
649    static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text,
650            jint contextStart, jint contextEnd, jint dir, jint offset, jint cursorOpt) {
651        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
652        const jchar* textArray = env->GetStringChars(text, NULL);
653        jint result = doTextRunCursor(env, paint, textArray, contextStart,
654                contextEnd - contextStart, dir, offset, cursorOpt);
655        env->ReleaseStringChars(text, textArray);
656        return result;
657    }
658
659    class GetTextFunctor {
660    public:
661        GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, Paint* paint,
662                    uint16_t* glyphs, SkPoint* pos)
663                : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
664        }
665
666        void operator()(size_t start, size_t end) {
667            for (size_t i = start; i < end; i++) {
668                glyphs[i] = layout.getGlyphId(i);
669                pos[i].fX = x + layout.getX(i);
670                pos[i].fY = y + layout.getY(i);
671            }
672            if (start == 0) {
673                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
674            } else {
675                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
676                path->addPath(tmpPath);
677            }
678        }
679    private:
680        const Layout& layout;
681        SkPath* path;
682        jfloat x;
683        jfloat y;
684        Paint* paint;
685        uint16_t* glyphs;
686        SkPoint* pos;
687        SkPath tmpPath;
688    };
689
690    static void getTextPath(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar* text,
691            jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
692        Layout layout;
693        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count);
694        size_t nGlyphs = layout.nGlyphs();
695        uint16_t* glyphs = new uint16_t[nGlyphs];
696        SkPoint* pos = new SkPoint[nGlyphs];
697
698        x += MinikinUtils::xOffsetForTextAlign(paint, layout);
699        Paint::Align align = paint->getTextAlign();
700        paint->setTextAlign(Paint::kLeft_Align);
701        paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
702        GetTextFunctor f(layout, path, x, y, paint, glyphs, pos);
703        MinikinUtils::forFontRun(layout, paint, f);
704        paint->setTextAlign(align);
705        delete[] glyphs;
706        delete[] pos;
707    }
708
709    static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle,
710            jlong typefaceHandle, jint bidiFlags,
711            jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
712        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
713        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
714        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
715        const jchar* textArray = env->GetCharArrayElements(text, NULL);
716        getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
717        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
718    }
719
720    static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle,
721            jlong typefaceHandle, jint bidiFlags,
722            jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
723        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
724        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
725        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
726        const jchar* textArray = env->GetStringChars(text, NULL);
727        getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
728        env->ReleaseStringChars(text, textArray);
729    }
730
731    static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius,
732                               jfloat dx, jfloat dy, jint color) {
733        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
734        if (radius <= 0) {
735            paint->setLooper(NULL);
736        }
737        else {
738            SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
739            paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref();
740        }
741    }
742
743    static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) {
744        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
745        return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL);
746    }
747
748    static int breakText(JNIEnv* env, const Paint& paint, TypefaceImpl* typeface, const jchar text[],
749                         int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
750                         const bool forwardScan) {
751        size_t measuredCount = 0;
752        float measured = 0;
753
754        Layout layout;
755        MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
756        float* advances = new float[count];
757        layout.getAdvances(advances);
758
759        for (int i = 0; i < count; i++) {
760            // traverse in the given direction
761            int index = forwardScan ? i : (count - i - 1);
762            float width = advances[index];
763            if (measured + width > maxWidth) {
764                break;
765            }
766            // properly handle clusters when scanning backwards
767            if (forwardScan || width != 0.0f) {
768                measuredCount = i + 1;
769            }
770            measured += width;
771        }
772        delete[] advances;
773
774        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
775            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
776            jfloat* array = autoMeasured.ptr();
777            array[0] = measured;
778        }
779        return measuredCount;
780    }
781
782    static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray jtext,
783            jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
784        NPE_CHECK_RETURN_ZERO(env, jtext);
785
786        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
787        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
788
789        bool forwardTextDirection;
790        if (count < 0) {
791            forwardTextDirection = false;
792            count = -count;
793        }
794        else {
795            forwardTextDirection = true;
796        }
797
798        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
799            doThrowAIOOBE(env);
800            return 0;
801        }
802
803        const jchar* text = env->GetCharArrayElements(jtext, NULL);
804        count = breakText(env, *paint, typeface, text + index, count, maxWidth,
805                          bidiFlags, jmeasuredWidth, forwardTextDirection);
806        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
807                                      JNI_ABORT);
808        return count;
809    }
810
811    static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext,
812                jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
813        NPE_CHECK_RETURN_ZERO(env, jtext);
814
815        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
816        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
817
818        int count = env->GetStringLength(jtext);
819        const jchar* text = env->GetStringChars(jtext, NULL);
820        count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, forwards);
821        env->ReleaseStringChars(jtext, text);
822        return count;
823    }
824
825    static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
826            const Paint& paint, TypefaceImpl* typeface, jint bidiFlags) {
827        SkRect  r;
828        SkIRect ir;
829
830        Layout layout;
831        MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
832        MinikinRect rect;
833        layout.getBounds(&rect);
834        r.fLeft = rect.mLeft;
835        r.fTop = rect.mTop;
836        r.fRight = rect.mRight;
837        r.fBottom = rect.mBottom;
838        r.roundOut(&ir);
839        GraphicsJNI::irect_to_jrect(ir, env, bounds);
840    }
841
842    static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
843                                jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
844        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);;
845        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
846        const jchar* textArray = env->GetStringChars(text, NULL);
847        doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
848        env->ReleaseStringChars(text, textArray);
849    }
850
851    static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
852                        jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
853        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
854        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
855        const jchar* textArray = env->GetCharArrayElements(text, NULL);
856        doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
857        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
858                                      JNI_ABORT);
859    }
860
861    static jboolean layoutContainsNotdef(const Layout& layout) {
862        for (size_t i = 0; i < layout.nGlyphs(); i++) {
863            if (layout.getGlyphId(i) == 0) {
864                return true;
865            }
866        }
867        return false;
868    }
869
870    static jboolean hasGlyphVariation(const Paint* paint, TypefaceImpl* typeface, jint bidiFlags,
871            const jchar* chars, size_t size) {
872        // TODO: query font for whether character has variation selector; requires a corresponding
873        // function in Minikin.
874        return false;
875    }
876
877    static jboolean hasGlyph(JNIEnv *env, jclass, jlong paintHandle, jlong typefaceHandle,
878            jint bidiFlags, jstring string) {
879        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
880        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
881        ScopedStringChars str(env, string);
882
883        /* start by rejecting variation selectors (not supported yet) */
884        size_t nChars = 0;
885        for (size_t i = 0; i < str.size(); i++) {
886            jchar c = str[i];
887            if (0xDC00 <= c && c <= 0xDFFF) {
888                // invalid UTF-16, unpaired trailing surrogate
889                return false;
890            } else if (0xD800 <= c && c <= 0xDBFF) {
891                if (i + 1 == str.size()) {
892                    // invalid UTF-16, unpaired leading surrogate at end of string
893                    return false;
894                }
895                i++;
896                jchar c2 = str[i];
897                if (!(0xDC00 <= c2 && c2 <= 0xDFFF)) {
898                    // invalid UTF-16, unpaired leading surrogate
899                    return false;
900                }
901                // UTF-16 encoding of range U+E0100..U+E01EF is DB40 DD00 .. DB40 DDEF
902                if (c == 0xDB40 && 0xDD00 <= c2 && c2 <= 0xDDEF) {
903                    return hasGlyphVariation(paint, typeface, bidiFlags, str.get(), str.size());
904                }
905            } else if (0xFE00 <= c && c <= 0xFE0F) {
906                return hasGlyphVariation(paint, typeface, bidiFlags, str.get(), str.size());
907            }
908            nChars++;
909        }
910        Layout layout;
911        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, str.get(), 0, str.size(),
912                str.size());
913        size_t nGlyphs = layout.nGlyphs();
914        if (nGlyphs != 1 && nChars > 1) {
915            // multiple-character input, and was not a ligature
916            // TODO: handle ZWJ/ZWNJ characters specially so we can detect certain ligatures
917            // in joining scripts, such as Arabic and Mongolian.
918            return false;
919        }
920        return nGlyphs > 0 && !layoutContainsNotdef(layout);
921    }
922
923    static jfloat doRunAdvance(const Paint* paint, TypefaceImpl* typeface, const jchar buf[],
924            jint start, jint count, jint bufSize, jboolean isRtl, jint offset) {
925        Layout layout;
926        int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
927        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, buf, start, count, bufSize);
928        return getRunAdvance(layout, buf, start, count, offset);
929    }
930
931    static jfloat getRunAdvance___CIIIIZI_F(JNIEnv *env, jclass, jlong paintHandle,
932            jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
933            jint contextEnd, jboolean isRtl, jint offset) {
934        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
935        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
936        jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL);
937        jfloat result = doRunAdvance(paint, typeface, textArray + contextStart,
938                start - contextStart, end - start, contextEnd - contextStart, isRtl,
939                offset - contextStart);
940        env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
941        return result;
942    }
943
944    static jint doOffsetForAdvance(const Paint* paint, TypefaceImpl* typeface, const jchar buf[],
945            jint start, jint count, jint bufSize, jboolean isRtl, jfloat advance) {
946        Layout layout;
947        int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
948        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, buf, start, count, bufSize);
949        return getOffsetForAdvance(layout, buf, start, count, advance);
950    }
951    static jint getOffsetForAdvance___CIIIIZF_I(JNIEnv *env, jclass, jlong paintHandle,
952            jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
953            jint contextEnd, jboolean isRtl, jfloat advance) {
954        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
955        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
956        jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL);
957        jint result = doOffsetForAdvance(paint, typeface, textArray + contextStart,
958                start - contextStart, end - start, contextEnd - contextStart, isRtl, advance);
959        result += contextStart;
960        env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
961        return result;
962    }
963
964};
965
966static const JNINativeMethod methods[] = {
967    {"finalizer", "(J)V", (void*) PaintGlue::finalizer},
968    {"native_init","()J", (void*) PaintGlue::init},
969    {"native_initWithPaint","(J)J", (void*) PaintGlue::initWithPaint},
970
971    {"native_reset","!(J)V", (void*) PaintGlue::reset},
972    {"native_set","!(JJ)V", (void*) PaintGlue::assign},
973    {"getFlags","!()I", (void*) PaintGlue::getFlags},
974    {"setFlags","!(I)V", (void*) PaintGlue::setFlags},
975    {"getHinting","!()I", (void*) PaintGlue::getHinting},
976    {"setHinting","!(I)V", (void*) PaintGlue::setHinting},
977    {"setAntiAlias","!(Z)V", (void*) PaintGlue::setAntiAlias},
978    {"setSubpixelText","!(Z)V", (void*) PaintGlue::setSubpixelText},
979    {"setLinearText","!(Z)V", (void*) PaintGlue::setLinearText},
980    {"setUnderlineText","!(Z)V", (void*) PaintGlue::setUnderlineText},
981    {"setStrikeThruText","!(Z)V", (void*) PaintGlue::setStrikeThruText},
982    {"setFakeBoldText","!(Z)V", (void*) PaintGlue::setFakeBoldText},
983    {"setFilterBitmap","!(Z)V", (void*) PaintGlue::setFilterBitmap},
984    {"setDither","!(Z)V", (void*) PaintGlue::setDither},
985    {"native_getStyle","!(J)I", (void*) PaintGlue::getStyle},
986    {"native_setStyle","!(JI)V", (void*) PaintGlue::setStyle},
987    {"getColor","!()I", (void*) PaintGlue::getColor},
988    {"setColor","!(I)V", (void*) PaintGlue::setColor},
989    {"getAlpha","!()I", (void*) PaintGlue::getAlpha},
990    {"setAlpha","!(I)V", (void*) PaintGlue::setAlpha},
991    {"getStrokeWidth","!()F", (void*) PaintGlue::getStrokeWidth},
992    {"setStrokeWidth","!(F)V", (void*) PaintGlue::setStrokeWidth},
993    {"getStrokeMiter","!()F", (void*) PaintGlue::getStrokeMiter},
994    {"setStrokeMiter","!(F)V", (void*) PaintGlue::setStrokeMiter},
995    {"native_getStrokeCap","!(J)I", (void*) PaintGlue::getStrokeCap},
996    {"native_setStrokeCap","!(JI)V", (void*) PaintGlue::setStrokeCap},
997    {"native_getStrokeJoin","!(J)I", (void*) PaintGlue::getStrokeJoin},
998    {"native_setStrokeJoin","!(JI)V", (void*) PaintGlue::setStrokeJoin},
999    {"native_getFillPath","!(JJJ)Z", (void*) PaintGlue::getFillPath},
1000    {"native_setShader","!(JJ)J", (void*) PaintGlue::setShader},
1001    {"native_setColorFilter","!(JJ)J", (void*) PaintGlue::setColorFilter},
1002    {"native_setXfermode","!(JJ)J", (void*) PaintGlue::setXfermode},
1003    {"native_setPathEffect","!(JJ)J", (void*) PaintGlue::setPathEffect},
1004    {"native_setMaskFilter","!(JJ)J", (void*) PaintGlue::setMaskFilter},
1005    {"native_setTypeface","!(JJ)J", (void*) PaintGlue::setTypeface},
1006    {"native_setRasterizer","!(JJ)J", (void*) PaintGlue::setRasterizer},
1007    {"native_getTextAlign","!(J)I", (void*) PaintGlue::getTextAlign},
1008    {"native_setTextAlign","!(JI)V", (void*) PaintGlue::setTextAlign},
1009    {"native_setTextLocale","!(JLjava/lang/String;)V", (void*) PaintGlue::setTextLocale},
1010    {"isElegantTextHeight","!()Z", (void*) PaintGlue::isElegantTextHeight},
1011    {"setElegantTextHeight","!(Z)V", (void*) PaintGlue::setElegantTextHeight},
1012    {"getTextSize","!()F", (void*) PaintGlue::getTextSize},
1013    {"setTextSize","!(F)V", (void*) PaintGlue::setTextSize},
1014    {"getTextScaleX","!()F", (void*) PaintGlue::getTextScaleX},
1015    {"setTextScaleX","!(F)V", (void*) PaintGlue::setTextScaleX},
1016    {"getTextSkewX","!()F", (void*) PaintGlue::getTextSkewX},
1017    {"setTextSkewX","!(F)V", (void*) PaintGlue::setTextSkewX},
1018    {"native_getLetterSpacing","!(J)F", (void*) PaintGlue::getLetterSpacing},
1019    {"native_setLetterSpacing","!(JF)V", (void*) PaintGlue::setLetterSpacing},
1020    {"native_setFontFeatureSettings","(JLjava/lang/String;)V",
1021            (void*) PaintGlue::setFontFeatureSettings},
1022    {"native_getHyphenEdit", "!(J)I", (void*) PaintGlue::getHyphenEdit},
1023    {"native_setHyphenEdit", "!(JI)V", (void*) PaintGlue::setHyphenEdit},
1024    {"ascent","!()F", (void*) PaintGlue::ascent},
1025    {"descent","!()F", (void*) PaintGlue::descent},
1026
1027    {"getFontMetrics", "!(Landroid/graphics/Paint$FontMetrics;)F",
1028            (void*)PaintGlue::getFontMetrics},
1029    {"getFontMetricsInt", "!(Landroid/graphics/Paint$FontMetricsInt;)I",
1030            (void*)PaintGlue::getFontMetricsInt},
1031
1032    {"native_breakText","(JJ[CIIFI[F)I", (void*) PaintGlue::breakTextC},
1033    {"native_breakText","(JJLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS},
1034    {"native_getTextAdvances","(JJ[CIIIII[FI)F",
1035            (void*) PaintGlue::getTextAdvances___CIIIII_FI},
1036    {"native_getTextAdvances","(JJLjava/lang/String;IIIII[FI)F",
1037            (void*) PaintGlue::getTextAdvances__StringIIIII_FI},
1038
1039    {"native_getTextRunCursor", "(J[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C},
1040    {"native_getTextRunCursor", "(JLjava/lang/String;IIIII)I",
1041            (void*) PaintGlue::getTextRunCursor__String},
1042    {"native_getTextPath", "(JJI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C},
1043    {"native_getTextPath", "(JJILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String},
1044    {"nativeGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V",
1045            (void*) PaintGlue::getStringBounds },
1046    {"nativeGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V",
1047            (void*) PaintGlue::getCharArrayBounds },
1048    {"native_hasGlyph", "(JJILjava/lang/String;)Z", (void*) PaintGlue::hasGlyph },
1049    {"native_getRunAdvance", "(JJ[CIIIIZI)F", (void*) PaintGlue::getRunAdvance___CIIIIZI_F},
1050    {"native_getOffsetForAdvance", "(JJ[CIIIIZF)I",
1051            (void*) PaintGlue::getOffsetForAdvance___CIIIIZF_I},
1052
1053    {"native_setShadowLayer", "!(JFFFI)V", (void*)PaintGlue::setShadowLayer},
1054    {"native_hasShadowLayer", "!(J)Z", (void*)PaintGlue::hasShadowLayer}
1055};
1056
1057int register_android_graphics_Paint(JNIEnv* env) {
1058    gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics");
1059    gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class);
1060
1061    gFontMetrics_fieldID.top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F");
1062    gFontMetrics_fieldID.ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F");
1063    gFontMetrics_fieldID.descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F");
1064    gFontMetrics_fieldID.bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F");
1065    gFontMetrics_fieldID.leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F");
1066
1067    gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt");
1068    gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class);
1069
1070    gFontMetricsInt_fieldID.top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I");
1071    gFontMetricsInt_fieldID.ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I");
1072    gFontMetricsInt_fieldID.descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I");
1073    gFontMetricsInt_fieldID.bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I");
1074    gFontMetricsInt_fieldID.leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I");
1075
1076    gPaint_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Paint"));
1077    gPaint_nativeInstanceID = GetFieldIDOrDie(env, gPaint_class, "mNativePaint", "J");
1078    gPaint_nativeTypefaceID = GetFieldIDOrDie(env, gPaint_class, "mNativeTypeface", "J");
1079
1080    return RegisterMethodsOrDie(env, "android/graphics/Paint", methods, NELEM(methods));
1081}
1082
1083}
1084