Paint.cpp revision a3024bd7026deb777556dd75dd34a719ea1c2b39 
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 "SkPath.h"
32#include "SkRasterizer.h"
33#include "SkShader.h"
34#include "SkTypeface.h"
35#include "SkXfermode.h"
36#include "unicode/uloc.h"
37#include "unicode/ushape.h"
38#include "utils/Blur.h"
39
40#include <minikin/GraphemeBreak.h>
41#include <minikin/Measurement.h>
42#include <unicode/utf16.h>
43#include "MinikinSkia.h"
44#include "MinikinUtils.h"
45#include "Paint.h"
46#include "TypefaceImpl.h"
47
48#include <cassert>
49#include <cstring>
50#include <memory>
51#include <vector>
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 void defaultSettingsForAndroid(Paint* paint) {
70    // GlyphID encoding is required because we are using Harfbuzz shaping
71    paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
72}
73
74namespace PaintGlue {
75    enum MoveOpt {
76        AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
77    };
78
79    static void deletePaint(Paint* paint) {
80        delete paint;
81    }
82
83    static jlong getNativeFinalizer(JNIEnv*, jobject) {
84        return static_cast<jlong>(reinterpret_cast<uintptr_t>(&deletePaint));
85    }
86
87    static jlong init(JNIEnv* env, jobject) {
88        static_assert(1 <<  0 == SkPaint::kAntiAlias_Flag,          "paint_flags_mismatch");
89        static_assert(1 <<  2 == SkPaint::kDither_Flag,             "paint_flags_mismatch");
90        static_assert(1 <<  3 == SkPaint::kUnderlineText_Flag,      "paint_flags_mismatch");
91        static_assert(1 <<  4 == SkPaint::kStrikeThruText_Flag,     "paint_flags_mismatch");
92        static_assert(1 <<  5 == SkPaint::kFakeBoldText_Flag,       "paint_flags_mismatch");
93        static_assert(1 <<  6 == SkPaint::kLinearText_Flag,         "paint_flags_mismatch");
94        static_assert(1 <<  7 == SkPaint::kSubpixelText_Flag,       "paint_flags_mismatch");
95        static_assert(1 <<  8 == SkPaint::kDevKernText_Flag,        "paint_flags_mismatch");
96        static_assert(1 << 10 == SkPaint::kEmbeddedBitmapText_Flag, "paint_flags_mismatch");
97
98        Paint* obj = new Paint();
99        defaultSettingsForAndroid(obj);
100        return reinterpret_cast<jlong>(obj);
101    }
102
103    static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
104        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
105        Paint* obj = new Paint(*paint);
106        return reinterpret_cast<jlong>(obj);
107    }
108
109    static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
110        Paint* obj = reinterpret_cast<Paint*>(objHandle);
111        obj->reset();
112        defaultSettingsForAndroid(obj);
113    }
114
115    static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) {
116        Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle);
117        const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle);
118        *dst = *src;
119    }
120
121    // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
122    static const uint32_t sFilterBitmapFlag = 0x02;
123
124    static jint getFlags(JNIEnv* env, jobject, jlong paintHandle) {
125        Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
126        uint32_t result = nativePaint->getFlags();
127        result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away.
128        if (nativePaint->getFilterQuality() != kNone_SkFilterQuality) {
129            result |= sFilterBitmapFlag;
130        }
131        return static_cast<jint>(result);
132    }
133
134    static void setFlags(JNIEnv* env, jobject, jlong paintHandle, jint flags) {
135        Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
136        // Instead of modifying 0x02, change the filter level.
137        nativePaint->setFilterQuality(flags & sFilterBitmapFlag
138                ? kLow_SkFilterQuality
139                : kNone_SkFilterQuality);
140        // Don't pass through filter flag, which is no longer stored in paint's flags.
141        flags &= ~sFilterBitmapFlag;
142        // Use the existing value for 0x02.
143        const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag;
144        flags |= existing0x02Flag;
145        nativePaint->setFlags(flags);
146    }
147
148    static jint getHinting(JNIEnv* env, jobject, jlong paintHandle) {
149        return reinterpret_cast<Paint*>(paintHandle)->getHinting()
150                == Paint::kNo_Hinting ? 0 : 1;
151    }
152
153    static void setHinting(JNIEnv* env, jobject, jlong paintHandle, jint mode) {
154        reinterpret_cast<Paint*>(paintHandle)->setHinting(
155                mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting);
156    }
157
158    static void setAntiAlias(JNIEnv* env, jobject, jlong paintHandle, jboolean aa) {
159        reinterpret_cast<Paint*>(paintHandle)->setAntiAlias(aa);
160    }
161
162    static void setLinearText(JNIEnv* env, jobject, jlong paintHandle, jboolean linearText) {
163        reinterpret_cast<Paint*>(paintHandle)->setLinearText(linearText);
164    }
165
166    static void setSubpixelText(JNIEnv* env, jobject, jlong paintHandle, jboolean subpixelText) {
167        reinterpret_cast<Paint*>(paintHandle)->setSubpixelText(subpixelText);
168    }
169
170    static void setUnderlineText(JNIEnv* env, jobject, jlong paintHandle, jboolean underlineText) {
171        reinterpret_cast<Paint*>(paintHandle)->setUnderlineText(underlineText);
172    }
173
174    static void setStrikeThruText(JNIEnv* env, jobject, jlong paintHandle, jboolean strikeThruText) {
175        reinterpret_cast<Paint*>(paintHandle)->setStrikeThruText(strikeThruText);
176    }
177
178    static void setFakeBoldText(JNIEnv* env, jobject, jlong paintHandle, jboolean fakeBoldText) {
179        reinterpret_cast<Paint*>(paintHandle)->setFakeBoldText(fakeBoldText);
180    }
181
182    static void setFilterBitmap(JNIEnv* env, jobject, jlong paintHandle, jboolean filterBitmap) {
183        reinterpret_cast<Paint*>(paintHandle)->setFilterQuality(
184                filterBitmap ? kLow_SkFilterQuality : kNone_SkFilterQuality);
185    }
186
187    static void setDither(JNIEnv* env, jobject, jlong paintHandle, jboolean dither) {
188        reinterpret_cast<Paint*>(paintHandle)->setDither(dither);
189    }
190
191    static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) {
192        Paint* obj = reinterpret_cast<Paint*>(objHandle);
193        return static_cast<jint>(obj->getStyle());
194    }
195
196    static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) {
197        Paint* obj = reinterpret_cast<Paint*>(objHandle);
198        Paint::Style style = static_cast<Paint::Style>(styleHandle);
199        obj->setStyle(style);
200    }
201
202    static jint getColor(JNIEnv* env, jobject, jlong paintHandle) {
203        int color;
204        color = reinterpret_cast<Paint*>(paintHandle)->getColor();
205        return static_cast<jint>(color);
206    }
207
208    static jint getAlpha(JNIEnv* env, jobject, jlong paintHandle) {
209        int alpha;
210        alpha = reinterpret_cast<Paint*>(paintHandle)->getAlpha();
211        return static_cast<jint>(alpha);
212    }
213
214    static void setColor(JNIEnv* env, jobject, jlong paintHandle, jint color) {
215        reinterpret_cast<Paint*>(paintHandle)->setColor(color);
216    }
217
218    static void setAlpha(JNIEnv* env, jobject, jlong paintHandle, jint a) {
219        reinterpret_cast<Paint*>(paintHandle)->setAlpha(a);
220    }
221
222    static jfloat getStrokeWidth(JNIEnv* env, jobject, jlong paintHandle) {
223        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeWidth());
224    }
225
226    static void setStrokeWidth(JNIEnv* env, jobject, jlong paintHandle, jfloat width) {
227        reinterpret_cast<Paint*>(paintHandle)->setStrokeWidth(width);
228    }
229
230    static jfloat getStrokeMiter(JNIEnv* env, jobject, jlong paintHandle) {
231        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeMiter());
232    }
233
234    static void setStrokeMiter(JNIEnv* env, jobject, jlong paintHandle, jfloat miter) {
235        reinterpret_cast<Paint*>(paintHandle)->setStrokeMiter(miter);
236    }
237
238    static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) {
239        Paint* obj = reinterpret_cast<Paint*>(objHandle);
240        return static_cast<jint>(obj->getStrokeCap());
241    }
242
243    static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) {
244        Paint* obj = reinterpret_cast<Paint*>(objHandle);
245        Paint::Cap cap = static_cast<Paint::Cap>(capHandle);
246        obj->setStrokeCap(cap);
247    }
248
249    static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) {
250        Paint* obj = reinterpret_cast<Paint*>(objHandle);
251        return static_cast<jint>(obj->getStrokeJoin());
252    }
253
254    static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) {
255        Paint* obj = reinterpret_cast<Paint*>(objHandle);
256        Paint::Join join = (Paint::Join) joinHandle;
257        obj->setStrokeJoin(join);
258    }
259
260    static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) {
261        Paint* obj = reinterpret_cast<Paint*>(objHandle);
262        SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
263        SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
264        return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
265    }
266
267    static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) {
268        Paint* obj = reinterpret_cast<Paint*>(objHandle);
269        SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
270        return reinterpret_cast<jlong>(obj->setShader(shader));
271    }
272
273    static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) {
274        Paint* obj = reinterpret_cast<Paint *>(objHandle);
275        SkColorFilter* filter  = reinterpret_cast<SkColorFilter *>(filterHandle);
276        return reinterpret_cast<jlong>(obj->setColorFilter(filter));
277    }
278
279    static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) {
280        Paint* obj = reinterpret_cast<Paint*>(objHandle);
281        SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle);
282        return reinterpret_cast<jlong>(obj->setXfermode(xfermode));
283    }
284
285    static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) {
286        Paint* obj = reinterpret_cast<Paint*>(objHandle);
287        SkPathEffect* effect  = reinterpret_cast<SkPathEffect*>(effectHandle);
288        return reinterpret_cast<jlong>(obj->setPathEffect(effect));
289    }
290
291    static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) {
292        Paint* obj = reinterpret_cast<Paint*>(objHandle);
293        SkMaskFilter* maskfilter  = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
294        return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter));
295    }
296
297    static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) {
298        // TODO: in Paint refactoring, set typeface on android Paint, not Paint
299        return NULL;
300    }
301
302    static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) {
303        Paint* obj = reinterpret_cast<Paint*>(objHandle);
304        SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle));
305        return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer));
306    }
307
308    static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) {
309        Paint* obj = reinterpret_cast<Paint*>(objHandle);
310        return static_cast<jint>(obj->getTextAlign());
311    }
312
313    static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) {
314        Paint* obj = reinterpret_cast<Paint*>(objHandle);
315        Paint::Align align = static_cast<Paint::Align>(alignHandle);
316        obj->setTextAlign(align);
317    }
318
319    static jint setTextLocales(JNIEnv* env, jobject clazz, jlong objHandle, jstring locales) {
320        Paint* obj = reinterpret_cast<Paint*>(objHandle);
321        ScopedUtfChars localesChars(env, locales);
322        jint minikinLangListId = FontStyle::registerLanguageList(localesChars.c_str());
323        obj->setMinikinLangListId(minikinLangListId);
324        return minikinLangListId;
325    }
326
327    static void setTextLocalesByMinikinLangListId(JNIEnv* env, jobject clazz, jlong objHandle,
328            jint minikinLangListId) {
329        Paint* obj = reinterpret_cast<Paint*>(objHandle);
330        obj->setMinikinLangListId(minikinLangListId);
331    }
332
333    static jboolean isElegantTextHeight(JNIEnv* env, jobject, jlong paintHandle) {
334        Paint* obj = reinterpret_cast<Paint*>(paintHandle);
335        return obj->getFontVariant() == VARIANT_ELEGANT;
336    }
337
338    static void setElegantTextHeight(JNIEnv* env, jobject, jlong paintHandle, jboolean aa) {
339        Paint* obj = reinterpret_cast<Paint*>(paintHandle);
340        obj->setFontVariant(aa ? VARIANT_ELEGANT : VARIANT_DEFAULT);
341    }
342
343    static jfloat getTextSize(JNIEnv* env, jobject, jlong paintHandle) {
344        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSize());
345    }
346
347    static void setTextSize(JNIEnv* env, jobject, jlong paintHandle, jfloat textSize) {
348        reinterpret_cast<Paint*>(paintHandle)->setTextSize(textSize);
349    }
350
351    static jfloat getTextScaleX(JNIEnv* env, jobject, jlong paintHandle) {
352        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextScaleX());
353    }
354
355    static void setTextScaleX(JNIEnv* env, jobject, jlong paintHandle, jfloat scaleX) {
356        reinterpret_cast<Paint*>(paintHandle)->setTextScaleX(scaleX);
357    }
358
359    static jfloat getTextSkewX(JNIEnv* env, jobject, jlong paintHandle) {
360        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSkewX());
361    }
362
363    static void setTextSkewX(JNIEnv* env, jobject, jlong paintHandle, jfloat skewX) {
364        reinterpret_cast<Paint*>(paintHandle)->setTextSkewX(skewX);
365    }
366
367    static jfloat getLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle) {
368        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
369        return paint->getLetterSpacing();
370    }
371
372    static void setLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat letterSpacing) {
373        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
374        paint->setLetterSpacing(letterSpacing);
375    }
376
377    static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) {
378        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
379        if (!settings) {
380            paint->setFontFeatureSettings(std::string());
381        } else {
382            ScopedUtfChars settingsChars(env, settings);
383            paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size()));
384        }
385    }
386
387    static jint getHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) {
388        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
389        return paint->getHyphenEdit();
390    }
391
392    static void setHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) {
393        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
394        paint->setHyphenEdit((uint32_t)hyphen);
395    }
396
397    static SkScalar getMetricsInternal(jlong paintHandle, jlong typefaceHandle,
398            Paint::FontMetrics *metrics) {
399        const int kElegantTop = 2500;
400        const int kElegantBottom = -1000;
401        const int kElegantAscent = 1900;
402        const int kElegantDescent = -500;
403        const int kElegantLeading = 0;
404        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
405        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
406        typeface = TypefaceImpl_resolveDefault(typeface);
407        FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle);
408        float saveSkewX = paint->getTextSkewX();
409        bool savefakeBold = paint->isFakeBoldText();
410        MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery);
411        SkScalar spacing = paint->getFontMetrics(metrics);
412        // The populateSkPaint call may have changed fake bold / text skew
413        // because we want to measure with those effects applied, so now
414        // restore the original settings.
415        paint->setTextSkewX(saveSkewX);
416        paint->setFakeBoldText(savefakeBold);
417        if (paint->getFontVariant() == VARIANT_ELEGANT) {
418            SkScalar size = paint->getTextSize();
419            metrics->fTop = -size * kElegantTop / 2048;
420            metrics->fBottom = -size * kElegantBottom / 2048;
421            metrics->fAscent = -size * kElegantAscent / 2048;
422            metrics->fDescent = -size * kElegantDescent / 2048;
423            metrics->fLeading = size * kElegantLeading / 2048;
424            spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
425        }
426        return spacing;
427    }
428
429    static jfloat ascent(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle) {
430        Paint::FontMetrics metrics;
431        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
432        return SkScalarToFloat(metrics.fAscent);
433    }
434
435    static jfloat descent(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle) {
436        Paint::FontMetrics metrics;
437        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
438        return SkScalarToFloat(metrics.fDescent);
439    }
440
441    static jfloat getFontMetrics(JNIEnv* env, jobject, jlong paintHandle,
442            jlong typefaceHandle, jobject metricsObj) {
443        Paint::FontMetrics metrics;
444        SkScalar spacing = getMetricsInternal(paintHandle, typefaceHandle, &metrics);
445
446        if (metricsObj) {
447            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
448            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
449            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
450            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
451            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
452            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
453        }
454        return SkScalarToFloat(spacing);
455    }
456
457    static jint getFontMetricsInt(JNIEnv* env, jobject, jlong paintHandle,
458            jlong typefaceHandle, jobject metricsObj) {
459        Paint::FontMetrics metrics;
460
461        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
462        int ascent = SkScalarRoundToInt(metrics.fAscent);
463        int descent = SkScalarRoundToInt(metrics.fDescent);
464        int leading = SkScalarRoundToInt(metrics.fLeading);
465
466        if (metricsObj) {
467            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
468            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
469            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
470            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
471            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
472            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
473        }
474        return descent - ascent + leading;
475    }
476
477    static jfloat doTextAdvances(JNIEnv *env, Paint *paint, TypefaceImpl* typeface,
478            const jchar *text, jint start, jint count, jint contextCount, jint bidiFlags,
479            jfloatArray advances, jint advancesIndex) {
480        NPE_CHECK_RETURN_ZERO(env, text);
481
482        if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
483            doThrowAIOOBE(env);
484            return 0;
485        }
486        if (count == 0) {
487            return 0;
488        }
489        if (advances) {
490            size_t advancesLength = env->GetArrayLength(advances);
491            if ((size_t)(count  + advancesIndex) > advancesLength) {
492                doThrowAIOOBE(env);
493                return 0;
494            }
495        }
496        std::unique_ptr<jfloat[]> advancesArray;
497        if (advances) {
498            advancesArray.reset(new jfloat[count]);
499        }
500        const float advance = MinikinUtils::measureText(paint, bidiFlags, typeface, text,
501                start, count, contextCount, advancesArray.get());
502        if (advances) {
503            env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray.get());
504        }
505        return advance;
506    }
507
508    static jfloat getTextAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
509            jlong typefaceHandle,
510            jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
511            jint bidiFlags, jfloatArray advances, jint advancesIndex) {
512        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
513        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
514        jchar* textArray = env->GetCharArrayElements(text, NULL);
515        jfloat result = doTextAdvances(env, paint, typeface, textArray + contextIndex,
516                index - contextIndex, count, contextCount, bidiFlags, advances, advancesIndex);
517        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
518        return result;
519    }
520
521    static jfloat getTextAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
522            jlong typefaceHandle,
523            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint bidiFlags,
524            jfloatArray advances, jint advancesIndex) {
525        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
526        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
527        const jchar* textArray = env->GetStringChars(text, NULL);
528        jfloat result = doTextAdvances(env, paint, typeface, textArray + contextStart,
529                start - contextStart, end - start, contextEnd - contextStart, bidiFlags,
530                advances, advancesIndex);
531        env->ReleaseStringChars(text, textArray);
532        return result;
533    }
534
535    static jint doTextRunCursor(JNIEnv *env, Paint* paint, const jchar *text, jint start,
536            jint count, jint flags, jint offset, jint opt) {
537        GraphemeBreak::MoveOpt moveOpt = GraphemeBreak::MoveOpt(opt);
538        size_t result = GraphemeBreak::getTextRunCursor(text, start, count, offset, moveOpt);
539        return static_cast<jint>(result);
540    }
541
542    static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
543            jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) {
544        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
545        jchar* textArray = env->GetCharArrayElements(text, NULL);
546        jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, dir,
547                offset, cursorOpt);
548        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
549        return result;
550    }
551
552    static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text,
553            jint contextStart, jint contextEnd, jint dir, jint offset, jint cursorOpt) {
554        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
555        const jchar* textArray = env->GetStringChars(text, NULL);
556        jint result = doTextRunCursor(env, paint, textArray, contextStart,
557                contextEnd - contextStart, dir, offset, cursorOpt);
558        env->ReleaseStringChars(text, textArray);
559        return result;
560    }
561
562    class GetTextFunctor {
563    public:
564        GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, Paint* paint,
565                    uint16_t* glyphs, SkPoint* pos)
566                : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
567        }
568
569        void operator()(size_t start, size_t end) {
570            for (size_t i = start; i < end; i++) {
571                glyphs[i] = layout.getGlyphId(i);
572                pos[i].fX = x + layout.getX(i);
573                pos[i].fY = y + layout.getY(i);
574            }
575            if (start == 0) {
576                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
577            } else {
578                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
579                path->addPath(tmpPath);
580            }
581        }
582    private:
583        const Layout& layout;
584        SkPath* path;
585        jfloat x;
586        jfloat y;
587        Paint* paint;
588        uint16_t* glyphs;
589        SkPoint* pos;
590        SkPath tmpPath;
591    };
592
593    static void getTextPath(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar* text,
594            jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
595        Layout layout;
596        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count);
597        size_t nGlyphs = layout.nGlyphs();
598        uint16_t* glyphs = new uint16_t[nGlyphs];
599        SkPoint* pos = new SkPoint[nGlyphs];
600
601        x += MinikinUtils::xOffsetForTextAlign(paint, layout);
602        Paint::Align align = paint->getTextAlign();
603        paint->setTextAlign(Paint::kLeft_Align);
604        paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
605        GetTextFunctor f(layout, path, x, y, paint, glyphs, pos);
606        MinikinUtils::forFontRun(layout, paint, f);
607        paint->setTextAlign(align);
608        delete[] glyphs;
609        delete[] pos;
610    }
611
612    static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle,
613            jlong typefaceHandle, jint bidiFlags,
614            jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
615        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
616        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
617        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
618        const jchar* textArray = env->GetCharArrayElements(text, NULL);
619        getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
620        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
621    }
622
623    static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle,
624            jlong typefaceHandle, jint bidiFlags,
625            jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
626        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
627        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
628        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
629        const jchar* textArray = env->GetStringChars(text, NULL);
630        getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
631        env->ReleaseStringChars(text, textArray);
632    }
633
634    static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius,
635                               jfloat dx, jfloat dy, jint color) {
636        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
637        if (radius <= 0) {
638            paint->setLooper(NULL);
639        }
640        else {
641            SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
642            paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref();
643        }
644    }
645
646    static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) {
647        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
648        return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL);
649    }
650
651    static int breakText(JNIEnv* env, const Paint& paint, TypefaceImpl* typeface, const jchar text[],
652                         int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
653                         const bool forwardScan) {
654        size_t measuredCount = 0;
655        float measured = 0;
656
657        Layout layout;
658        MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
659        float* advances = new float[count];
660        layout.getAdvances(advances);
661
662        for (int i = 0; i < count; i++) {
663            // traverse in the given direction
664            int index = forwardScan ? i : (count - i - 1);
665            float width = advances[index];
666            if (measured + width > maxWidth) {
667                break;
668            }
669            // properly handle clusters when scanning backwards
670            if (forwardScan || width != 0.0f) {
671                measuredCount = i + 1;
672            }
673            measured += width;
674        }
675        delete[] advances;
676
677        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
678            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
679            jfloat* array = autoMeasured.ptr();
680            array[0] = measured;
681        }
682        return measuredCount;
683    }
684
685    static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray jtext,
686            jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
687        NPE_CHECK_RETURN_ZERO(env, jtext);
688
689        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
690        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
691
692        bool forwardTextDirection;
693        if (count < 0) {
694            forwardTextDirection = false;
695            count = -count;
696        }
697        else {
698            forwardTextDirection = true;
699        }
700
701        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
702            doThrowAIOOBE(env);
703            return 0;
704        }
705
706        const jchar* text = env->GetCharArrayElements(jtext, NULL);
707        count = breakText(env, *paint, typeface, text + index, count, maxWidth,
708                          bidiFlags, jmeasuredWidth, forwardTextDirection);
709        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
710                                      JNI_ABORT);
711        return count;
712    }
713
714    static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext,
715                jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
716        NPE_CHECK_RETURN_ZERO(env, jtext);
717
718        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
719        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
720
721        int count = env->GetStringLength(jtext);
722        const jchar* text = env->GetStringChars(jtext, NULL);
723        count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, forwards);
724        env->ReleaseStringChars(jtext, text);
725        return count;
726    }
727
728    static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
729            const Paint& paint, TypefaceImpl* typeface, jint bidiFlags) {
730        SkRect  r;
731        SkIRect ir;
732
733        Layout layout;
734        MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
735        MinikinRect rect;
736        layout.getBounds(&rect);
737        r.fLeft = rect.mLeft;
738        r.fTop = rect.mTop;
739        r.fRight = rect.mRight;
740        r.fBottom = rect.mBottom;
741        r.roundOut(&ir);
742        GraphicsJNI::irect_to_jrect(ir, env, bounds);
743    }
744
745    static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
746                                jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
747        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
748        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
749        const jchar* textArray = env->GetStringChars(text, NULL);
750        doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
751        env->ReleaseStringChars(text, textArray);
752    }
753
754    static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
755                        jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
756        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
757        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
758        const jchar* textArray = env->GetCharArrayElements(text, NULL);
759        doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
760        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
761                                      JNI_ABORT);
762    }
763
764    static jboolean layoutContainsNotdef(const Layout& layout) {
765        for (size_t i = 0; i < layout.nGlyphs(); i++) {
766            if (layout.getGlyphId(i) == 0) {
767                return true;
768            }
769        }
770        return false;
771    }
772
773    static jboolean hasGlyph(JNIEnv *env, jclass, jlong paintHandle, jlong typefaceHandle,
774            jint bidiFlags, jstring string) {
775        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
776        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
777        ScopedStringChars str(env, string);
778
779        /* Start by rejecting unsupported base code point and variation selector pairs. */
780        size_t nChars = 0;
781        const uint32_t kStartOfString = 0xFFFFFFFF;
782        uint32_t prevCp = kStartOfString;
783        for (size_t i = 0; i < str.size(); i++) {
784            jchar cu = str[i];
785            uint32_t cp = cu;
786            if (U16_IS_TRAIL(cu)) {
787                // invalid UTF-16, unpaired trailing surrogate
788                return false;
789            } else if (U16_IS_LEAD(cu)) {
790                if (i + 1 == str.size()) {
791                    // invalid UTF-16, unpaired leading surrogate at end of string
792                    return false;
793                }
794                i++;
795                jchar cu2 = str[i];
796                if (!U16_IS_TRAIL(cu2)) {
797                    // invalid UTF-16, unpaired leading surrogate
798                    return false;
799                }
800                cp = U16_GET_SUPPLEMENTARY(cu, cu2);
801            }
802
803            if (prevCp != kStartOfString &&
804                ((0xFE00 <= cp && cp <= 0xFE0F) || (0xE0100 <= cp && cp <= 0xE01EF)) &&
805                !MinikinUtils::hasVariationSelector(typeface, prevCp, cp)) {
806                // No font has a glyph for the code point and variation selector pair.
807                return false;
808            }
809            nChars++;
810            prevCp = cp;
811        }
812        Layout layout;
813        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, str.get(), 0, str.size(),
814                str.size());
815        size_t nGlyphs = layout.nGlyphs();
816        if (nGlyphs != 1 && nChars > 1) {
817            // multiple-character input, and was not a ligature
818            // TODO: handle ZWJ/ZWNJ characters specially so we can detect certain ligatures
819            // in joining scripts, such as Arabic and Mongolian.
820            return false;
821        }
822        return nGlyphs > 0 && !layoutContainsNotdef(layout);
823    }
824
825    static jfloat doRunAdvance(const Paint* paint, TypefaceImpl* typeface, const jchar buf[],
826            jint start, jint count, jint bufSize, jboolean isRtl, jint offset) {
827        Layout layout;
828        int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
829        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, buf, start, count, bufSize);
830        return getRunAdvance(layout, buf, start, count, offset);
831    }
832
833    static jfloat getRunAdvance___CIIIIZI_F(JNIEnv *env, jclass, jlong paintHandle,
834            jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
835            jint contextEnd, jboolean isRtl, jint offset) {
836        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
837        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
838        jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL);
839        jfloat result = doRunAdvance(paint, typeface, textArray + contextStart,
840                start - contextStart, end - start, contextEnd - contextStart, isRtl,
841                offset - contextStart);
842        env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
843        return result;
844    }
845
846    static jint doOffsetForAdvance(const Paint* paint, TypefaceImpl* typeface, const jchar buf[],
847            jint start, jint count, jint bufSize, jboolean isRtl, jfloat advance) {
848        Layout layout;
849        int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
850        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, buf, start, count, bufSize);
851        return getOffsetForAdvance(layout, buf, start, count, advance);
852    }
853    static jint getOffsetForAdvance___CIIIIZF_I(JNIEnv *env, jclass, jlong paintHandle,
854            jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
855            jint contextEnd, jboolean isRtl, jfloat advance) {
856        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
857        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
858        jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL);
859        jint result = doOffsetForAdvance(paint, typeface, textArray + contextStart,
860                start - contextStart, end - start, contextEnd - contextStart, isRtl, advance);
861        result += contextStart;
862        env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
863        return result;
864    }
865
866}; // namespace PaintGlue
867
868static const JNINativeMethod methods[] = {
869    {"nGetNativeFinalizer", "()J", (void*) PaintGlue::getNativeFinalizer},
870    {"nInit","()J", (void*) PaintGlue::init},
871    {"nInitWithPaint","(J)J", (void*) PaintGlue::initWithPaint},
872
873    {"nReset","!(J)V", (void*) PaintGlue::reset},
874    {"nSet","!(JJ)V", (void*) PaintGlue::assign},
875    {"nGetFlags","!(J)I", (void*) PaintGlue::getFlags},
876    {"nSetFlags","!(JI)V", (void*) PaintGlue::setFlags},
877    {"nGetHinting","!(J)I", (void*) PaintGlue::getHinting},
878    {"nSetHinting","!(JI)V", (void*) PaintGlue::setHinting},
879    {"nSetAntiAlias","!(JZ)V", (void*) PaintGlue::setAntiAlias},
880    {"nSetSubpixelText","!(JZ)V", (void*) PaintGlue::setSubpixelText},
881    {"nSetLinearText","!(JZ)V", (void*) PaintGlue::setLinearText},
882    {"nSetUnderlineText","!(JZ)V", (void*) PaintGlue::setUnderlineText},
883    {"nSetStrikeThruText","!(JZ)V", (void*) PaintGlue::setStrikeThruText},
884    {"nSetFakeBoldText","!(JZ)V", (void*) PaintGlue::setFakeBoldText},
885    {"nSetFilterBitmap","!(JZ)V", (void*) PaintGlue::setFilterBitmap},
886    {"nSetDither","!(JZ)V", (void*) PaintGlue::setDither},
887    {"nGetStyle","!(J)I", (void*) PaintGlue::getStyle},
888    {"nSetStyle","!(JI)V", (void*) PaintGlue::setStyle},
889    {"nGetColor","!(J)I", (void*) PaintGlue::getColor},
890    {"nSetColor","!(JI)V", (void*) PaintGlue::setColor},
891    {"nGetAlpha","!(J)I", (void*) PaintGlue::getAlpha},
892    {"nSetAlpha","!(JI)V", (void*) PaintGlue::setAlpha},
893    {"nGetStrokeWidth","!(J)F", (void*) PaintGlue::getStrokeWidth},
894    {"nSetStrokeWidth","!(JF)V", (void*) PaintGlue::setStrokeWidth},
895    {"nGetStrokeMiter","!(J)F", (void*) PaintGlue::getStrokeMiter},
896    {"nSetStrokeMiter","!(JF)V", (void*) PaintGlue::setStrokeMiter},
897    {"nGetStrokeCap","!(J)I", (void*) PaintGlue::getStrokeCap},
898    {"nSetStrokeCap","!(JI)V", (void*) PaintGlue::setStrokeCap},
899    {"nGetStrokeJoin","!(J)I", (void*) PaintGlue::getStrokeJoin},
900    {"nSetStrokeJoin","!(JI)V", (void*) PaintGlue::setStrokeJoin},
901    {"nGetFillPath","!(JJJ)Z", (void*) PaintGlue::getFillPath},
902    {"nSetShader","!(JJ)J", (void*) PaintGlue::setShader},
903    {"nSetColorFilter","!(JJ)J", (void*) PaintGlue::setColorFilter},
904    {"nSetXfermode","!(JJ)J", (void*) PaintGlue::setXfermode},
905    {"nSetPathEffect","!(JJ)J", (void*) PaintGlue::setPathEffect},
906    {"nSetMaskFilter","!(JJ)J", (void*) PaintGlue::setMaskFilter},
907    {"nSetTypeface","!(JJ)J", (void*) PaintGlue::setTypeface},
908    {"nSetRasterizer","!(JJ)J", (void*) PaintGlue::setRasterizer},
909    {"nGetTextAlign","!(J)I", (void*) PaintGlue::getTextAlign},
910    {"nSetTextAlign","!(JI)V", (void*) PaintGlue::setTextAlign},
911    {"nSetTextLocales","!(JLjava/lang/String;)I", (void*) PaintGlue::setTextLocales},
912    {"nSetTextLocalesByMinikinLangListId","!(JI)V",
913            (void*) PaintGlue::setTextLocalesByMinikinLangListId},
914    {"nIsElegantTextHeight","!(J)Z", (void*) PaintGlue::isElegantTextHeight},
915    {"nSetElegantTextHeight","!(JZ)V", (void*) PaintGlue::setElegantTextHeight},
916    {"nGetTextSize","!(J)F", (void*) PaintGlue::getTextSize},
917    {"nSetTextSize","!(JF)V", (void*) PaintGlue::setTextSize},
918    {"nGetTextScaleX","!(J)F", (void*) PaintGlue::getTextScaleX},
919    {"nSetTextScaleX","!(JF)V", (void*) PaintGlue::setTextScaleX},
920    {"nGetTextSkewX","!(J)F", (void*) PaintGlue::getTextSkewX},
921    {"nSetTextSkewX","!(JF)V", (void*) PaintGlue::setTextSkewX},
922    {"nGetLetterSpacing","!(J)F", (void*) PaintGlue::getLetterSpacing},
923    {"nSetLetterSpacing","!(JF)V", (void*) PaintGlue::setLetterSpacing},
924    {"nSetFontFeatureSettings","(JLjava/lang/String;)V",
925            (void*) PaintGlue::setFontFeatureSettings},
926    {"nGetHyphenEdit", "!(J)I", (void*) PaintGlue::getHyphenEdit},
927    {"nSetHyphenEdit", "!(JI)V", (void*) PaintGlue::setHyphenEdit},
928    {"nAscent","!(JJ)F", (void*) PaintGlue::ascent},
929    {"nDescent","!(JJ)F", (void*) PaintGlue::descent},
930
931    {"nGetFontMetrics", "!(JJLandroid/graphics/Paint$FontMetrics;)F",
932            (void*)PaintGlue::getFontMetrics},
933    {"nGetFontMetricsInt", "!(JJLandroid/graphics/Paint$FontMetricsInt;)I",
934            (void*)PaintGlue::getFontMetricsInt},
935
936    {"nBreakText","(JJ[CIIFI[F)I", (void*) PaintGlue::breakTextC},
937    {"nBreakText","(JJLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS},
938    {"nGetTextAdvances","(JJ[CIIIII[FI)F",
939            (void*) PaintGlue::getTextAdvances___CIIIII_FI},
940    {"nGetTextAdvances","(JJLjava/lang/String;IIIII[FI)F",
941            (void*) PaintGlue::getTextAdvances__StringIIIII_FI},
942
943    {"nGetTextRunCursor", "(J[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C},
944    {"nGetTextRunCursor", "(JLjava/lang/String;IIIII)I",
945            (void*) PaintGlue::getTextRunCursor__String},
946    {"nGetTextPath", "(JJI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C},
947    {"nGetTextPath", "(JJILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String},
948    {"nGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V",
949            (void*) PaintGlue::getStringBounds },
950    {"nGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V",
951            (void*) PaintGlue::getCharArrayBounds },
952    {"nHasGlyph", "(JJILjava/lang/String;)Z", (void*) PaintGlue::hasGlyph },
953    {"nGetRunAdvance", "(JJ[CIIIIZI)F", (void*) PaintGlue::getRunAdvance___CIIIIZI_F},
954    {"nGetOffsetForAdvance", "(JJ[CIIIIZF)I",
955            (void*) PaintGlue::getOffsetForAdvance___CIIIIZF_I},
956
957    {"nSetShadowLayer", "!(JFFFI)V", (void*)PaintGlue::setShadowLayer},
958    {"nHasShadowLayer", "!(J)Z", (void*)PaintGlue::hasShadowLayer}
959};
960
961int register_android_graphics_Paint(JNIEnv* env) {
962    gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics");
963    gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class);
964
965    gFontMetrics_fieldID.top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F");
966    gFontMetrics_fieldID.ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F");
967    gFontMetrics_fieldID.descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F");
968    gFontMetrics_fieldID.bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F");
969    gFontMetrics_fieldID.leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F");
970
971    gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt");
972    gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class);
973
974    gFontMetricsInt_fieldID.top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I");
975    gFontMetricsInt_fieldID.ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I");
976    gFontMetricsInt_fieldID.descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I");
977    gFontMetricsInt_fieldID.bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I");
978    gFontMetricsInt_fieldID.leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I");
979
980    return RegisterMethodsOrDie(env, "android/graphics/Paint", methods, NELEM(methods));
981}
982
983}
984