Paint.cpp revision f036ead2a218ffa43697fcaa999b666a4c6d13cf 
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 <cassert>
47#include <cstring>
48#include <memory>
49#include <vector>
50
51namespace android {
52
53struct JMetricsID {
54    jfieldID    top;
55    jfieldID    ascent;
56    jfieldID    descent;
57    jfieldID    bottom;
58    jfieldID    leading;
59};
60
61static jclass   gFontMetrics_class;
62static JMetricsID gFontMetrics_fieldID;
63
64static jclass   gFontMetricsInt_class;
65static JMetricsID gFontMetricsInt_fieldID;
66
67static void defaultSettingsForAndroid(Paint* paint) {
68    // GlyphID encoding is required because we are using Harfbuzz shaping
69    paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
70}
71
72struct LocalesCacheEntry {
73    std::string javaLocales;
74    std::string languageTags;
75};
76
77static thread_local LocalesCacheEntry sSingleEntryLocalesCache;
78
79namespace PaintGlue {
80    enum MoveOpt {
81        AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
82    };
83
84    static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
85        Paint* obj = reinterpret_cast<Paint*>(objHandle);
86        delete obj;
87    }
88
89    static jlong init(JNIEnv* env, jobject) {
90        static_assert(1 <<  0 == SkPaint::kAntiAlias_Flag,          "paint_flags_mismatch");
91        static_assert(1 <<  2 == SkPaint::kDither_Flag,             "paint_flags_mismatch");
92        static_assert(1 <<  3 == SkPaint::kUnderlineText_Flag,      "paint_flags_mismatch");
93        static_assert(1 <<  4 == SkPaint::kStrikeThruText_Flag,     "paint_flags_mismatch");
94        static_assert(1 <<  5 == SkPaint::kFakeBoldText_Flag,       "paint_flags_mismatch");
95        static_assert(1 <<  6 == SkPaint::kLinearText_Flag,         "paint_flags_mismatch");
96        static_assert(1 <<  7 == SkPaint::kSubpixelText_Flag,       "paint_flags_mismatch");
97        static_assert(1 <<  8 == SkPaint::kDevKernText_Flag,        "paint_flags_mismatch");
98        static_assert(1 << 10 == SkPaint::kEmbeddedBitmapText_Flag, "paint_flags_mismatch");
99
100        Paint* obj = new Paint();
101        defaultSettingsForAndroid(obj);
102        return reinterpret_cast<jlong>(obj);
103    }
104
105    static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
106        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
107        Paint* obj = new Paint(*paint);
108        return reinterpret_cast<jlong>(obj);
109    }
110
111    static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
112        Paint* obj = reinterpret_cast<Paint*>(objHandle);
113        obj->reset();
114        defaultSettingsForAndroid(obj);
115    }
116
117    static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) {
118        Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle);
119        const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle);
120        *dst = *src;
121    }
122
123    // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
124    static const uint32_t sFilterBitmapFlag = 0x02;
125
126    static jint getFlags(JNIEnv* env, jobject, jlong paintHandle) {
127        Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
128        uint32_t result = nativePaint->getFlags();
129        result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away.
130        if (nativePaint->getFilterQuality() != kNone_SkFilterQuality) {
131            result |= sFilterBitmapFlag;
132        }
133        return static_cast<jint>(result);
134    }
135
136    static void setFlags(JNIEnv* env, jobject, jlong paintHandle, jint flags) {
137        Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
138        // Instead of modifying 0x02, change the filter level.
139        nativePaint->setFilterQuality(flags & sFilterBitmapFlag
140                ? kLow_SkFilterQuality
141                : kNone_SkFilterQuality);
142        // Don't pass through filter flag, which is no longer stored in paint's flags.
143        flags &= ~sFilterBitmapFlag;
144        // Use the existing value for 0x02.
145        const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag;
146        flags |= existing0x02Flag;
147        nativePaint->setFlags(flags);
148    }
149
150    static jint getHinting(JNIEnv* env, jobject, jlong paintHandle) {
151        return reinterpret_cast<Paint*>(paintHandle)->getHinting()
152                == Paint::kNo_Hinting ? 0 : 1;
153    }
154
155    static void setHinting(JNIEnv* env, jobject, jlong paintHandle, jint mode) {
156        reinterpret_cast<Paint*>(paintHandle)->setHinting(
157                mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting);
158    }
159
160    static void setAntiAlias(JNIEnv* env, jobject, jlong paintHandle, jboolean aa) {
161        reinterpret_cast<Paint*>(paintHandle)->setAntiAlias(aa);
162    }
163
164    static void setLinearText(JNIEnv* env, jobject, jlong paintHandle, jboolean linearText) {
165        reinterpret_cast<Paint*>(paintHandle)->setLinearText(linearText);
166    }
167
168    static void setSubpixelText(JNIEnv* env, jobject, jlong paintHandle, jboolean subpixelText) {
169        reinterpret_cast<Paint*>(paintHandle)->setSubpixelText(subpixelText);
170    }
171
172    static void setUnderlineText(JNIEnv* env, jobject, jlong paintHandle, jboolean underlineText) {
173        reinterpret_cast<Paint*>(paintHandle)->setUnderlineText(underlineText);
174    }
175
176    static void setStrikeThruText(JNIEnv* env, jobject, jlong paintHandle, jboolean strikeThruText) {
177        reinterpret_cast<Paint*>(paintHandle)->setStrikeThruText(strikeThruText);
178    }
179
180    static void setFakeBoldText(JNIEnv* env, jobject, jlong paintHandle, jboolean fakeBoldText) {
181        reinterpret_cast<Paint*>(paintHandle)->setFakeBoldText(fakeBoldText);
182    }
183
184    static void setFilterBitmap(JNIEnv* env, jobject, jlong paintHandle, jboolean filterBitmap) {
185        reinterpret_cast<Paint*>(paintHandle)->setFilterQuality(
186                filterBitmap ? kLow_SkFilterQuality : kNone_SkFilterQuality);
187    }
188
189    static void setDither(JNIEnv* env, jobject, jlong paintHandle, jboolean dither) {
190        reinterpret_cast<Paint*>(paintHandle)->setDither(dither);
191    }
192
193    static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) {
194        Paint* obj = reinterpret_cast<Paint*>(objHandle);
195        return static_cast<jint>(obj->getStyle());
196    }
197
198    static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) {
199        Paint* obj = reinterpret_cast<Paint*>(objHandle);
200        Paint::Style style = static_cast<Paint::Style>(styleHandle);
201        obj->setStyle(style);
202    }
203
204    static jint getColor(JNIEnv* env, jobject, jlong paintHandle) {
205        int color;
206        color = reinterpret_cast<Paint*>(paintHandle)->getColor();
207        return static_cast<jint>(color);
208    }
209
210    static jint getAlpha(JNIEnv* env, jobject, jlong paintHandle) {
211        int alpha;
212        alpha = reinterpret_cast<Paint*>(paintHandle)->getAlpha();
213        return static_cast<jint>(alpha);
214    }
215
216    static void setColor(JNIEnv* env, jobject, jlong paintHandle, jint color) {
217        reinterpret_cast<Paint*>(paintHandle)->setColor(color);
218    }
219
220    static void setAlpha(JNIEnv* env, jobject, jlong paintHandle, jint a) {
221        reinterpret_cast<Paint*>(paintHandle)->setAlpha(a);
222    }
223
224    static jfloat getStrokeWidth(JNIEnv* env, jobject, jlong paintHandle) {
225        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeWidth());
226    }
227
228    static void setStrokeWidth(JNIEnv* env, jobject, jlong paintHandle, jfloat width) {
229        reinterpret_cast<Paint*>(paintHandle)->setStrokeWidth(width);
230    }
231
232    static jfloat getStrokeMiter(JNIEnv* env, jobject, jlong paintHandle) {
233        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeMiter());
234    }
235
236    static void setStrokeMiter(JNIEnv* env, jobject, jlong paintHandle, jfloat miter) {
237        reinterpret_cast<Paint*>(paintHandle)->setStrokeMiter(miter);
238    }
239
240    static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) {
241        Paint* obj = reinterpret_cast<Paint*>(objHandle);
242        return static_cast<jint>(obj->getStrokeCap());
243    }
244
245    static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) {
246        Paint* obj = reinterpret_cast<Paint*>(objHandle);
247        Paint::Cap cap = static_cast<Paint::Cap>(capHandle);
248        obj->setStrokeCap(cap);
249    }
250
251    static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) {
252        Paint* obj = reinterpret_cast<Paint*>(objHandle);
253        return static_cast<jint>(obj->getStrokeJoin());
254    }
255
256    static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) {
257        Paint* obj = reinterpret_cast<Paint*>(objHandle);
258        Paint::Join join = (Paint::Join) joinHandle;
259        obj->setStrokeJoin(join);
260    }
261
262    static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) {
263        Paint* obj = reinterpret_cast<Paint*>(objHandle);
264        SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
265        SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
266        return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
267    }
268
269    static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) {
270        Paint* obj = reinterpret_cast<Paint*>(objHandle);
271        SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
272        return reinterpret_cast<jlong>(obj->setShader(shader));
273    }
274
275    static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) {
276        Paint* obj = reinterpret_cast<Paint *>(objHandle);
277        SkColorFilter* filter  = reinterpret_cast<SkColorFilter *>(filterHandle);
278        return reinterpret_cast<jlong>(obj->setColorFilter(filter));
279    }
280
281    static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) {
282        Paint* obj = reinterpret_cast<Paint*>(objHandle);
283        SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle);
284        return reinterpret_cast<jlong>(obj->setXfermode(xfermode));
285    }
286
287    static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) {
288        Paint* obj = reinterpret_cast<Paint*>(objHandle);
289        SkPathEffect* effect  = reinterpret_cast<SkPathEffect*>(effectHandle);
290        return reinterpret_cast<jlong>(obj->setPathEffect(effect));
291    }
292
293    static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) {
294        Paint* obj = reinterpret_cast<Paint*>(objHandle);
295        SkMaskFilter* maskfilter  = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
296        return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter));
297    }
298
299    static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) {
300        // TODO: in Paint refactoring, set typeface on android Paint, not Paint
301        return NULL;
302    }
303
304    static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) {
305        Paint* obj = reinterpret_cast<Paint*>(objHandle);
306        SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle));
307        return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer));
308    }
309
310    static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) {
311        Paint* obj = reinterpret_cast<Paint*>(objHandle);
312        return static_cast<jint>(obj->getTextAlign());
313    }
314
315    static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) {
316        Paint* obj = reinterpret_cast<Paint*>(objHandle);
317        Paint::Align align = static_cast<Paint::Align>(alignHandle);
318        obj->setTextAlign(align);
319    }
320
321    // generate bcp47 identifier for the supplied locale
322    static void toLanguageTag(char* output, size_t outSize,
323            const char* locale) {
324        if (output == NULL || outSize <= 0) {
325            return;
326        }
327        if (locale == NULL) {
328            output[0] = '\0';
329            return;
330        }
331        char canonicalChars[ULOC_FULLNAME_CAPACITY];
332        UErrorCode uErr = U_ZERO_ERROR;
333        uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY,
334                &uErr);
335        if (U_SUCCESS(uErr)) {
336            char likelyChars[ULOC_FULLNAME_CAPACITY];
337            uErr = U_ZERO_ERROR;
338            uloc_addLikelySubtags(canonicalChars, likelyChars,
339                    ULOC_FULLNAME_CAPACITY, &uErr);
340            if (U_SUCCESS(uErr)) {
341                uErr = U_ZERO_ERROR;
342                uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr);
343                if (U_SUCCESS(uErr)) {
344                    return;
345                } else {
346                    ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars,
347                            u_errorName(uErr));
348                }
349            } else {
350                ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s",
351                        canonicalChars, u_errorName(uErr));
352            }
353        } else {
354            ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale,
355                    u_errorName(uErr));
356        }
357        // unable to build a proper language identifier
358        output[0] = '\0';
359    }
360
361    static void toLanguageTags(std::string* output, const char* locales) {
362        if (output == NULL) {
363            return;
364        }
365        if (locales == NULL) {
366            output->clear();
367            return;
368        }
369
370        char langTag[ULOC_FULLNAME_CAPACITY];
371        const char* commaLoc = strchr(locales, ',');
372        if (commaLoc == NULL) {
373            assert(locales[0] != '\0');  // the string should not be empty
374            toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, locales);
375            *output = langTag;
376            return;
377        }
378
379        size_t len = strlen(locales);
380        char locale[len];
381        output->clear();
382        output->reserve(len);
383        const char* lastStart = locales;
384        do {
385            assert(lastStart > commaLoc);  // the substring should not be empty
386            strncpy(locale, lastStart, commaLoc - lastStart);
387            locale[commaLoc - lastStart] = '\0';
388            toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, locale);
389            if (langTag[0] != '\0') {
390                output->append(langTag);
391                output->push_back(',');
392            }
393            lastStart = commaLoc + 1;
394            commaLoc = strchr(lastStart, ',');
395        } while (commaLoc != NULL);
396        assert(lastStart[0] != '\0');  // the final substring should not be empty
397        toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, lastStart);
398        if (langTag[0] != '\0') {
399            output->append(langTag);
400        }
401    }
402
403    static void setTextLocales(JNIEnv* env, jobject clazz, jlong objHandle, jstring locales) {
404        Paint* obj = reinterpret_cast<Paint*>(objHandle);
405        ScopedUtfChars localesChars(env, locales);
406        if (sSingleEntryLocalesCache.javaLocales != localesChars.c_str()) {
407            sSingleEntryLocalesCache.javaLocales = localesChars.c_str();
408            toLanguageTags(&sSingleEntryLocalesCache.languageTags, localesChars.c_str());
409        }
410
411        obj->setTextLocales(sSingleEntryLocalesCache.languageTags);
412    }
413
414    static jboolean isElegantTextHeight(JNIEnv* env, jobject, jlong paintHandle) {
415        Paint* obj = reinterpret_cast<Paint*>(paintHandle);
416        return obj->getFontVariant() == VARIANT_ELEGANT;
417    }
418
419    static void setElegantTextHeight(JNIEnv* env, jobject, jlong paintHandle, jboolean aa) {
420        Paint* obj = reinterpret_cast<Paint*>(paintHandle);
421        obj->setFontVariant(aa ? VARIANT_ELEGANT : VARIANT_DEFAULT);
422    }
423
424    static jfloat getTextSize(JNIEnv* env, jobject, jlong paintHandle) {
425        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSize());
426    }
427
428    static void setTextSize(JNIEnv* env, jobject, jlong paintHandle, jfloat textSize) {
429        reinterpret_cast<Paint*>(paintHandle)->setTextSize(textSize);
430    }
431
432    static jfloat getTextScaleX(JNIEnv* env, jobject, jlong paintHandle) {
433        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextScaleX());
434    }
435
436    static void setTextScaleX(JNIEnv* env, jobject, jlong paintHandle, jfloat scaleX) {
437        reinterpret_cast<Paint*>(paintHandle)->setTextScaleX(scaleX);
438    }
439
440    static jfloat getTextSkewX(JNIEnv* env, jobject, jlong paintHandle) {
441        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSkewX());
442    }
443
444    static void setTextSkewX(JNIEnv* env, jobject, jlong paintHandle, jfloat skewX) {
445        reinterpret_cast<Paint*>(paintHandle)->setTextSkewX(skewX);
446    }
447
448    static jfloat getLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle) {
449        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
450        return paint->getLetterSpacing();
451    }
452
453    static void setLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat letterSpacing) {
454        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
455        paint->setLetterSpacing(letterSpacing);
456    }
457
458    static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) {
459        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
460        if (!settings) {
461            paint->setFontFeatureSettings(std::string());
462        } else {
463            ScopedUtfChars settingsChars(env, settings);
464            paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size()));
465        }
466    }
467
468    static jint getHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) {
469        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
470        return paint->getHyphenEdit();
471    }
472
473    static void setHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) {
474        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
475        paint->setHyphenEdit((uint32_t)hyphen);
476    }
477
478    static SkScalar getMetricsInternal(jlong paintHandle, jlong typefaceHandle,
479            Paint::FontMetrics *metrics) {
480        const int kElegantTop = 2500;
481        const int kElegantBottom = -1000;
482        const int kElegantAscent = 1900;
483        const int kElegantDescent = -500;
484        const int kElegantLeading = 0;
485        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
486        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
487        typeface = TypefaceImpl_resolveDefault(typeface);
488        FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle);
489        float saveSkewX = paint->getTextSkewX();
490        bool savefakeBold = paint->isFakeBoldText();
491        MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery);
492        SkScalar spacing = paint->getFontMetrics(metrics);
493        // The populateSkPaint call may have changed fake bold / text skew
494        // because we want to measure with those effects applied, so now
495        // restore the original settings.
496        paint->setTextSkewX(saveSkewX);
497        paint->setFakeBoldText(savefakeBold);
498        if (paint->getFontVariant() == VARIANT_ELEGANT) {
499            SkScalar size = paint->getTextSize();
500            metrics->fTop = -size * kElegantTop / 2048;
501            metrics->fBottom = -size * kElegantBottom / 2048;
502            metrics->fAscent = -size * kElegantAscent / 2048;
503            metrics->fDescent = -size * kElegantDescent / 2048;
504            metrics->fLeading = size * kElegantLeading / 2048;
505            spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
506        }
507        return spacing;
508    }
509
510    static jfloat ascent(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle) {
511        Paint::FontMetrics metrics;
512        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
513        return SkScalarToFloat(metrics.fAscent);
514    }
515
516    static jfloat descent(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle) {
517        Paint::FontMetrics metrics;
518        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
519        return SkScalarToFloat(metrics.fDescent);
520    }
521
522    static jfloat getFontMetrics(JNIEnv* env, jobject, jlong paintHandle,
523            jlong typefaceHandle, jobject metricsObj) {
524        Paint::FontMetrics metrics;
525        SkScalar spacing = getMetricsInternal(paintHandle, typefaceHandle, &metrics);
526
527        if (metricsObj) {
528            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
529            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
530            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
531            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
532            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
533            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
534        }
535        return SkScalarToFloat(spacing);
536    }
537
538    static jint getFontMetricsInt(JNIEnv* env, jobject, jlong paintHandle,
539            jlong typefaceHandle, jobject metricsObj) {
540        Paint::FontMetrics metrics;
541
542        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
543        int ascent = SkScalarRoundToInt(metrics.fAscent);
544        int descent = SkScalarRoundToInt(metrics.fDescent);
545        int leading = SkScalarRoundToInt(metrics.fLeading);
546
547        if (metricsObj) {
548            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
549            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
550            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
551            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
552            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
553            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
554        }
555        return descent - ascent + leading;
556    }
557
558    static jfloat doTextAdvances(JNIEnv *env, Paint *paint, TypefaceImpl* typeface,
559            const jchar *text, jint start, jint count, jint contextCount, jint bidiFlags,
560            jfloatArray advances, jint advancesIndex) {
561        NPE_CHECK_RETURN_ZERO(env, text);
562
563        if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
564            doThrowAIOOBE(env);
565            return 0;
566        }
567        if (count == 0) {
568            return 0;
569        }
570        if (advances) {
571            size_t advancesLength = env->GetArrayLength(advances);
572            if ((size_t)(count  + advancesIndex) > advancesLength) {
573                doThrowAIOOBE(env);
574                return 0;
575            }
576        }
577
578        Layout layout;
579        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, start, count,
580                contextCount);
581        if (advances != NULL) {
582            std::unique_ptr<jfloat> advancesArray(new jfloat[count]);
583            layout.getAdvances(advancesArray.get());
584            env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray.get());
585        }
586        return layout.getAdvance();
587    }
588
589    static jfloat getTextAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
590            jlong typefaceHandle,
591            jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
592            jint bidiFlags, jfloatArray advances, jint advancesIndex) {
593        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
594        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
595        jchar* textArray = env->GetCharArrayElements(text, NULL);
596        jfloat result = doTextAdvances(env, paint, typeface, textArray + contextIndex,
597                index - contextIndex, count, contextCount, bidiFlags, advances, advancesIndex);
598        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
599        return result;
600    }
601
602    static jfloat getTextAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
603            jlong typefaceHandle,
604            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint bidiFlags,
605            jfloatArray advances, jint advancesIndex) {
606        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
607        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
608        const jchar* textArray = env->GetStringChars(text, NULL);
609        jfloat result = doTextAdvances(env, paint, typeface, textArray + contextStart,
610                start - contextStart, end - start, contextEnd - contextStart, bidiFlags,
611                advances, advancesIndex);
612        env->ReleaseStringChars(text, textArray);
613        return result;
614    }
615
616    static jint doTextRunCursor(JNIEnv *env, Paint* paint, const jchar *text, jint start,
617            jint count, jint flags, jint offset, jint opt) {
618        GraphemeBreak::MoveOpt moveOpt = GraphemeBreak::MoveOpt(opt);
619        size_t result = GraphemeBreak::getTextRunCursor(text, start, count, offset, moveOpt);
620        return static_cast<jint>(result);
621    }
622
623    static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
624            jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) {
625        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
626        jchar* textArray = env->GetCharArrayElements(text, NULL);
627        jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, dir,
628                offset, cursorOpt);
629        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
630        return result;
631    }
632
633    static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text,
634            jint contextStart, jint contextEnd, jint dir, jint offset, jint cursorOpt) {
635        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
636        const jchar* textArray = env->GetStringChars(text, NULL);
637        jint result = doTextRunCursor(env, paint, textArray, contextStart,
638                contextEnd - contextStart, dir, offset, cursorOpt);
639        env->ReleaseStringChars(text, textArray);
640        return result;
641    }
642
643    class GetTextFunctor {
644    public:
645        GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, Paint* paint,
646                    uint16_t* glyphs, SkPoint* pos)
647                : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
648        }
649
650        void operator()(size_t start, size_t end) {
651            for (size_t i = start; i < end; i++) {
652                glyphs[i] = layout.getGlyphId(i);
653                pos[i].fX = x + layout.getX(i);
654                pos[i].fY = y + layout.getY(i);
655            }
656            if (start == 0) {
657                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
658            } else {
659                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
660                path->addPath(tmpPath);
661            }
662        }
663    private:
664        const Layout& layout;
665        SkPath* path;
666        jfloat x;
667        jfloat y;
668        Paint* paint;
669        uint16_t* glyphs;
670        SkPoint* pos;
671        SkPath tmpPath;
672    };
673
674    static void getTextPath(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar* text,
675            jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
676        Layout layout;
677        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count);
678        size_t nGlyphs = layout.nGlyphs();
679        uint16_t* glyphs = new uint16_t[nGlyphs];
680        SkPoint* pos = new SkPoint[nGlyphs];
681
682        x += MinikinUtils::xOffsetForTextAlign(paint, layout);
683        Paint::Align align = paint->getTextAlign();
684        paint->setTextAlign(Paint::kLeft_Align);
685        paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
686        GetTextFunctor f(layout, path, x, y, paint, glyphs, pos);
687        MinikinUtils::forFontRun(layout, paint, f);
688        paint->setTextAlign(align);
689        delete[] glyphs;
690        delete[] pos;
691    }
692
693    static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle,
694            jlong typefaceHandle, jint bidiFlags,
695            jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
696        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
697        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
698        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
699        const jchar* textArray = env->GetCharArrayElements(text, NULL);
700        getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
701        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
702    }
703
704    static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle,
705            jlong typefaceHandle, jint bidiFlags,
706            jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
707        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
708        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
709        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
710        const jchar* textArray = env->GetStringChars(text, NULL);
711        getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
712        env->ReleaseStringChars(text, textArray);
713    }
714
715    static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius,
716                               jfloat dx, jfloat dy, jint color) {
717        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
718        if (radius <= 0) {
719            paint->setLooper(NULL);
720        }
721        else {
722            SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
723            paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref();
724        }
725    }
726
727    static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) {
728        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
729        return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL);
730    }
731
732    static int breakText(JNIEnv* env, const Paint& paint, TypefaceImpl* typeface, const jchar text[],
733                         int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
734                         const bool forwardScan) {
735        size_t measuredCount = 0;
736        float measured = 0;
737
738        Layout layout;
739        MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
740        float* advances = new float[count];
741        layout.getAdvances(advances);
742
743        for (int i = 0; i < count; i++) {
744            // traverse in the given direction
745            int index = forwardScan ? i : (count - i - 1);
746            float width = advances[index];
747            if (measured + width > maxWidth) {
748                break;
749            }
750            // properly handle clusters when scanning backwards
751            if (forwardScan || width != 0.0f) {
752                measuredCount = i + 1;
753            }
754            measured += width;
755        }
756        delete[] advances;
757
758        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
759            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
760            jfloat* array = autoMeasured.ptr();
761            array[0] = measured;
762        }
763        return measuredCount;
764    }
765
766    static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray jtext,
767            jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
768        NPE_CHECK_RETURN_ZERO(env, jtext);
769
770        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
771        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
772
773        bool forwardTextDirection;
774        if (count < 0) {
775            forwardTextDirection = false;
776            count = -count;
777        }
778        else {
779            forwardTextDirection = true;
780        }
781
782        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
783            doThrowAIOOBE(env);
784            return 0;
785        }
786
787        const jchar* text = env->GetCharArrayElements(jtext, NULL);
788        count = breakText(env, *paint, typeface, text + index, count, maxWidth,
789                          bidiFlags, jmeasuredWidth, forwardTextDirection);
790        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
791                                      JNI_ABORT);
792        return count;
793    }
794
795    static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext,
796                jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
797        NPE_CHECK_RETURN_ZERO(env, jtext);
798
799        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
800        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
801
802        int count = env->GetStringLength(jtext);
803        const jchar* text = env->GetStringChars(jtext, NULL);
804        count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, forwards);
805        env->ReleaseStringChars(jtext, text);
806        return count;
807    }
808
809    static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
810            const Paint& paint, TypefaceImpl* typeface, jint bidiFlags) {
811        SkRect  r;
812        SkIRect ir;
813
814        Layout layout;
815        MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
816        MinikinRect rect;
817        layout.getBounds(&rect);
818        r.fLeft = rect.mLeft;
819        r.fTop = rect.mTop;
820        r.fRight = rect.mRight;
821        r.fBottom = rect.mBottom;
822        r.roundOut(&ir);
823        GraphicsJNI::irect_to_jrect(ir, env, bounds);
824    }
825
826    static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
827                                jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
828        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
829        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
830        const jchar* textArray = env->GetStringChars(text, NULL);
831        doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
832        env->ReleaseStringChars(text, textArray);
833    }
834
835    static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
836                        jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
837        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
838        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
839        const jchar* textArray = env->GetCharArrayElements(text, NULL);
840        doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
841        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
842                                      JNI_ABORT);
843    }
844
845    static jboolean layoutContainsNotdef(const Layout& layout) {
846        for (size_t i = 0; i < layout.nGlyphs(); i++) {
847            if (layout.getGlyphId(i) == 0) {
848                return true;
849            }
850        }
851        return false;
852    }
853
854    static jboolean hasGlyphVariation(const Paint* paint, TypefaceImpl* typeface, jint bidiFlags,
855            const jchar* chars, size_t size) {
856        // TODO: query font for whether character has variation selector; requires a corresponding
857        // function in Minikin.
858        return false;
859    }
860
861    static jboolean hasGlyph(JNIEnv *env, jclass, jlong paintHandle, jlong typefaceHandle,
862            jint bidiFlags, jstring string) {
863        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
864        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
865        ScopedStringChars str(env, string);
866
867        /* start by rejecting variation selectors (not supported yet) */
868        size_t nChars = 0;
869        for (size_t i = 0; i < str.size(); i++) {
870            jchar c = str[i];
871            if (0xDC00 <= c && c <= 0xDFFF) {
872                // invalid UTF-16, unpaired trailing surrogate
873                return false;
874            } else if (0xD800 <= c && c <= 0xDBFF) {
875                if (i + 1 == str.size()) {
876                    // invalid UTF-16, unpaired leading surrogate at end of string
877                    return false;
878                }
879                i++;
880                jchar c2 = str[i];
881                if (!(0xDC00 <= c2 && c2 <= 0xDFFF)) {
882                    // invalid UTF-16, unpaired leading surrogate
883                    return false;
884                }
885                // UTF-16 encoding of range U+E0100..U+E01EF is DB40 DD00 .. DB40 DDEF
886                if (c == 0xDB40 && 0xDD00 <= c2 && c2 <= 0xDDEF) {
887                    return hasGlyphVariation(paint, typeface, bidiFlags, str.get(), str.size());
888                }
889            } else if (0xFE00 <= c && c <= 0xFE0F) {
890                return hasGlyphVariation(paint, typeface, bidiFlags, str.get(), str.size());
891            }
892            nChars++;
893        }
894        Layout layout;
895        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, str.get(), 0, str.size(),
896                str.size());
897        size_t nGlyphs = layout.nGlyphs();
898        if (nGlyphs != 1 && nChars > 1) {
899            // multiple-character input, and was not a ligature
900            // TODO: handle ZWJ/ZWNJ characters specially so we can detect certain ligatures
901            // in joining scripts, such as Arabic and Mongolian.
902            return false;
903        }
904        return nGlyphs > 0 && !layoutContainsNotdef(layout);
905    }
906
907    static jfloat doRunAdvance(const Paint* paint, TypefaceImpl* typeface, const jchar buf[],
908            jint start, jint count, jint bufSize, jboolean isRtl, jint offset) {
909        Layout layout;
910        int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
911        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, buf, start, count, bufSize);
912        return getRunAdvance(layout, buf, start, count, offset);
913    }
914
915    static jfloat getRunAdvance___CIIIIZI_F(JNIEnv *env, jclass, jlong paintHandle,
916            jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
917            jint contextEnd, jboolean isRtl, jint offset) {
918        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
919        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
920        jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL);
921        jfloat result = doRunAdvance(paint, typeface, textArray + contextStart,
922                start - contextStart, end - start, contextEnd - contextStart, isRtl,
923                offset - contextStart);
924        env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
925        return result;
926    }
927
928    static jint doOffsetForAdvance(const Paint* paint, TypefaceImpl* typeface, const jchar buf[],
929            jint start, jint count, jint bufSize, jboolean isRtl, jfloat advance) {
930        Layout layout;
931        int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
932        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, buf, start, count, bufSize);
933        return getOffsetForAdvance(layout, buf, start, count, advance);
934    }
935    static jint getOffsetForAdvance___CIIIIZF_I(JNIEnv *env, jclass, jlong paintHandle,
936            jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
937            jint contextEnd, jboolean isRtl, jfloat advance) {
938        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
939        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
940        jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL);
941        jint result = doOffsetForAdvance(paint, typeface, textArray + contextStart,
942                start - contextStart, end - start, contextEnd - contextStart, isRtl, advance);
943        result += contextStart;
944        env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
945        return result;
946    }
947
948}; // namespace PaintGlue
949
950static const JNINativeMethod methods[] = {
951    {"nFinalizer", "(J)V", (void*) PaintGlue::finalizer},
952    {"nInit","()J", (void*) PaintGlue::init},
953    {"nInitWithPaint","(J)J", (void*) PaintGlue::initWithPaint},
954
955    {"nReset","!(J)V", (void*) PaintGlue::reset},
956    {"nSet","!(JJ)V", (void*) PaintGlue::assign},
957    {"nGetFlags","!(J)I", (void*) PaintGlue::getFlags},
958    {"nSetFlags","!(JI)V", (void*) PaintGlue::setFlags},
959    {"nGetHinting","!(J)I", (void*) PaintGlue::getHinting},
960    {"nSetHinting","!(JI)V", (void*) PaintGlue::setHinting},
961    {"nSetAntiAlias","!(JZ)V", (void*) PaintGlue::setAntiAlias},
962    {"nSetSubpixelText","!(JZ)V", (void*) PaintGlue::setSubpixelText},
963    {"nSetLinearText","!(JZ)V", (void*) PaintGlue::setLinearText},
964    {"nSetUnderlineText","!(JZ)V", (void*) PaintGlue::setUnderlineText},
965    {"nSetStrikeThruText","!(JZ)V", (void*) PaintGlue::setStrikeThruText},
966    {"nSetFakeBoldText","!(JZ)V", (void*) PaintGlue::setFakeBoldText},
967    {"nSetFilterBitmap","!(JZ)V", (void*) PaintGlue::setFilterBitmap},
968    {"nSetDither","!(JZ)V", (void*) PaintGlue::setDither},
969    {"nGetStyle","!(J)I", (void*) PaintGlue::getStyle},
970    {"nSetStyle","!(JI)V", (void*) PaintGlue::setStyle},
971    {"nGetColor","!(J)I", (void*) PaintGlue::getColor},
972    {"nSetColor","!(JI)V", (void*) PaintGlue::setColor},
973    {"nGetAlpha","!(J)I", (void*) PaintGlue::getAlpha},
974    {"nSetAlpha","!(JI)V", (void*) PaintGlue::setAlpha},
975    {"nGetStrokeWidth","!(J)F", (void*) PaintGlue::getStrokeWidth},
976    {"nSetStrokeWidth","!(JF)V", (void*) PaintGlue::setStrokeWidth},
977    {"nGetStrokeMiter","!(J)F", (void*) PaintGlue::getStrokeMiter},
978    {"nSetStrokeMiter","!(JF)V", (void*) PaintGlue::setStrokeMiter},
979    {"nGetStrokeCap","!(J)I", (void*) PaintGlue::getStrokeCap},
980    {"nSetStrokeCap","!(JI)V", (void*) PaintGlue::setStrokeCap},
981    {"nGetStrokeJoin","!(J)I", (void*) PaintGlue::getStrokeJoin},
982    {"nSetStrokeJoin","!(JI)V", (void*) PaintGlue::setStrokeJoin},
983    {"nGetFillPath","!(JJJ)Z", (void*) PaintGlue::getFillPath},
984    {"nSetShader","!(JJ)J", (void*) PaintGlue::setShader},
985    {"nSetColorFilter","!(JJ)J", (void*) PaintGlue::setColorFilter},
986    {"nSetXfermode","!(JJ)J", (void*) PaintGlue::setXfermode},
987    {"nSetPathEffect","!(JJ)J", (void*) PaintGlue::setPathEffect},
988    {"nSetMaskFilter","!(JJ)J", (void*) PaintGlue::setMaskFilter},
989    {"nSetTypeface","!(JJ)J", (void*) PaintGlue::setTypeface},
990    {"nSetRasterizer","!(JJ)J", (void*) PaintGlue::setRasterizer},
991    {"nGetTextAlign","!(J)I", (void*) PaintGlue::getTextAlign},
992    {"nSetTextAlign","!(JI)V", (void*) PaintGlue::setTextAlign},
993    {"nSetTextLocales","!(JLjava/lang/String;)V", (void*) PaintGlue::setTextLocales},
994    {"nIsElegantTextHeight","!(J)Z", (void*) PaintGlue::isElegantTextHeight},
995    {"nSetElegantTextHeight","!(JZ)V", (void*) PaintGlue::setElegantTextHeight},
996    {"nGetTextSize","!(J)F", (void*) PaintGlue::getTextSize},
997    {"nSetTextSize","!(JF)V", (void*) PaintGlue::setTextSize},
998    {"nGetTextScaleX","!(J)F", (void*) PaintGlue::getTextScaleX},
999    {"nSetTextScaleX","!(JF)V", (void*) PaintGlue::setTextScaleX},
1000    {"nGetTextSkewX","!(J)F", (void*) PaintGlue::getTextSkewX},
1001    {"nSetTextSkewX","!(JF)V", (void*) PaintGlue::setTextSkewX},
1002    {"nGetLetterSpacing","!(J)F", (void*) PaintGlue::getLetterSpacing},
1003    {"nSetLetterSpacing","!(JF)V", (void*) PaintGlue::setLetterSpacing},
1004    {"nSetFontFeatureSettings","(JLjava/lang/String;)V",
1005            (void*) PaintGlue::setFontFeatureSettings},
1006    {"nGetHyphenEdit", "!(J)I", (void*) PaintGlue::getHyphenEdit},
1007    {"nSetHyphenEdit", "!(JI)V", (void*) PaintGlue::setHyphenEdit},
1008    {"nAscent","!(JJ)F", (void*) PaintGlue::ascent},
1009    {"nDescent","!(JJ)F", (void*) PaintGlue::descent},
1010
1011    {"nGetFontMetrics", "!(JJLandroid/graphics/Paint$FontMetrics;)F",
1012            (void*)PaintGlue::getFontMetrics},
1013    {"nGetFontMetricsInt", "!(JJLandroid/graphics/Paint$FontMetricsInt;)I",
1014            (void*)PaintGlue::getFontMetricsInt},
1015
1016    {"nBreakText","(JJ[CIIFI[F)I", (void*) PaintGlue::breakTextC},
1017    {"nBreakText","(JJLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS},
1018    {"nGetTextAdvances","(JJ[CIIIII[FI)F",
1019            (void*) PaintGlue::getTextAdvances___CIIIII_FI},
1020    {"nGetTextAdvances","(JJLjava/lang/String;IIIII[FI)F",
1021            (void*) PaintGlue::getTextAdvances__StringIIIII_FI},
1022
1023    {"nGetTextRunCursor", "(J[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C},
1024    {"nGetTextRunCursor", "(JLjava/lang/String;IIIII)I",
1025            (void*) PaintGlue::getTextRunCursor__String},
1026    {"nGetTextPath", "(JJI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C},
1027    {"nGetTextPath", "(JJILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String},
1028    {"nGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V",
1029            (void*) PaintGlue::getStringBounds },
1030    {"nGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V",
1031            (void*) PaintGlue::getCharArrayBounds },
1032    {"nHasGlyph", "(JJILjava/lang/String;)Z", (void*) PaintGlue::hasGlyph },
1033    {"nGetRunAdvance", "(JJ[CIIIIZI)F", (void*) PaintGlue::getRunAdvance___CIIIIZI_F},
1034    {"nGetOffsetForAdvance", "(JJ[CIIIIZF)I",
1035            (void*) PaintGlue::getOffsetForAdvance___CIIIIZF_I},
1036
1037    {"nSetShadowLayer", "!(JFFFI)V", (void*)PaintGlue::setShadowLayer},
1038    {"nHasShadowLayer", "!(J)Z", (void*)PaintGlue::hasShadowLayer}
1039};
1040
1041int register_android_graphics_Paint(JNIEnv* env) {
1042    gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics");
1043    gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class);
1044
1045    gFontMetrics_fieldID.top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F");
1046    gFontMetrics_fieldID.ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F");
1047    gFontMetrics_fieldID.descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F");
1048    gFontMetrics_fieldID.bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F");
1049    gFontMetrics_fieldID.leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F");
1050
1051    gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt");
1052    gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class);
1053
1054    gFontMetricsInt_fieldID.top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I");
1055    gFontMetricsInt_fieldID.ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I");
1056    gFontMetricsInt_fieldID.descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I");
1057    gFontMetricsInt_fieldID.bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I");
1058    gFontMetricsInt_fieldID.leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I");
1059
1060    return RegisterMethodsOrDie(env, "android/graphics/Paint", methods, NELEM(methods));
1061}
1062
1063}
1064