Paint.cpp revision bb1a96647a82df5a134bf631fc9db342e7ef61de 
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
74struct LocalesCacheEntry {
75    std::string javaLocales;
76    std::string languageTags;
77};
78
79static thread_local LocalesCacheEntry sSingleEntryLocalesCache;
80
81namespace PaintGlue {
82    enum MoveOpt {
83        AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
84    };
85
86    static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
87        Paint* obj = reinterpret_cast<Paint*>(objHandle);
88        delete obj;
89    }
90
91    static jlong init(JNIEnv* env, jobject) {
92        static_assert(1 <<  0 == SkPaint::kAntiAlias_Flag,          "paint_flags_mismatch");
93        static_assert(1 <<  2 == SkPaint::kDither_Flag,             "paint_flags_mismatch");
94        static_assert(1 <<  3 == SkPaint::kUnderlineText_Flag,      "paint_flags_mismatch");
95        static_assert(1 <<  4 == SkPaint::kStrikeThruText_Flag,     "paint_flags_mismatch");
96        static_assert(1 <<  5 == SkPaint::kFakeBoldText_Flag,       "paint_flags_mismatch");
97        static_assert(1 <<  6 == SkPaint::kLinearText_Flag,         "paint_flags_mismatch");
98        static_assert(1 <<  7 == SkPaint::kSubpixelText_Flag,       "paint_flags_mismatch");
99        static_assert(1 <<  8 == SkPaint::kDevKernText_Flag,        "paint_flags_mismatch");
100        static_assert(1 << 10 == SkPaint::kEmbeddedBitmapText_Flag, "paint_flags_mismatch");
101
102        Paint* obj = new Paint();
103        defaultSettingsForAndroid(obj);
104        return reinterpret_cast<jlong>(obj);
105    }
106
107    static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
108        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
109        Paint* obj = new Paint(*paint);
110        return reinterpret_cast<jlong>(obj);
111    }
112
113    static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
114        Paint* obj = reinterpret_cast<Paint*>(objHandle);
115        obj->reset();
116        defaultSettingsForAndroid(obj);
117    }
118
119    static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) {
120        Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle);
121        const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle);
122        *dst = *src;
123    }
124
125    // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
126    static const uint32_t sFilterBitmapFlag = 0x02;
127
128    static jint getFlags(JNIEnv* env, jobject, jlong paintHandle) {
129        Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
130        uint32_t result = nativePaint->getFlags();
131        result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away.
132        if (nativePaint->getFilterQuality() != kNone_SkFilterQuality) {
133            result |= sFilterBitmapFlag;
134        }
135        return static_cast<jint>(result);
136    }
137
138    static void setFlags(JNIEnv* env, jobject, jlong paintHandle, jint flags) {
139        Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
140        // Instead of modifying 0x02, change the filter level.
141        nativePaint->setFilterQuality(flags & sFilterBitmapFlag
142                ? kLow_SkFilterQuality
143                : kNone_SkFilterQuality);
144        // Don't pass through filter flag, which is no longer stored in paint's flags.
145        flags &= ~sFilterBitmapFlag;
146        // Use the existing value for 0x02.
147        const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag;
148        flags |= existing0x02Flag;
149        nativePaint->setFlags(flags);
150    }
151
152    static jint getHinting(JNIEnv* env, jobject, jlong paintHandle) {
153        return reinterpret_cast<Paint*>(paintHandle)->getHinting()
154                == Paint::kNo_Hinting ? 0 : 1;
155    }
156
157    static void setHinting(JNIEnv* env, jobject, jlong paintHandle, jint mode) {
158        reinterpret_cast<Paint*>(paintHandle)->setHinting(
159                mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting);
160    }
161
162    static void setAntiAlias(JNIEnv* env, jobject, jlong paintHandle, jboolean aa) {
163        reinterpret_cast<Paint*>(paintHandle)->setAntiAlias(aa);
164    }
165
166    static void setLinearText(JNIEnv* env, jobject, jlong paintHandle, jboolean linearText) {
167        reinterpret_cast<Paint*>(paintHandle)->setLinearText(linearText);
168    }
169
170    static void setSubpixelText(JNIEnv* env, jobject, jlong paintHandle, jboolean subpixelText) {
171        reinterpret_cast<Paint*>(paintHandle)->setSubpixelText(subpixelText);
172    }
173
174    static void setUnderlineText(JNIEnv* env, jobject, jlong paintHandle, jboolean underlineText) {
175        reinterpret_cast<Paint*>(paintHandle)->setUnderlineText(underlineText);
176    }
177
178    static void setStrikeThruText(JNIEnv* env, jobject, jlong paintHandle, jboolean strikeThruText) {
179        reinterpret_cast<Paint*>(paintHandle)->setStrikeThruText(strikeThruText);
180    }
181
182    static void setFakeBoldText(JNIEnv* env, jobject, jlong paintHandle, jboolean fakeBoldText) {
183        reinterpret_cast<Paint*>(paintHandle)->setFakeBoldText(fakeBoldText);
184    }
185
186    static void setFilterBitmap(JNIEnv* env, jobject, jlong paintHandle, jboolean filterBitmap) {
187        reinterpret_cast<Paint*>(paintHandle)->setFilterQuality(
188                filterBitmap ? kLow_SkFilterQuality : kNone_SkFilterQuality);
189    }
190
191    static void setDither(JNIEnv* env, jobject, jlong paintHandle, jboolean dither) {
192        reinterpret_cast<Paint*>(paintHandle)->setDither(dither);
193    }
194
195    static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) {
196        Paint* obj = reinterpret_cast<Paint*>(objHandle);
197        return static_cast<jint>(obj->getStyle());
198    }
199
200    static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) {
201        Paint* obj = reinterpret_cast<Paint*>(objHandle);
202        Paint::Style style = static_cast<Paint::Style>(styleHandle);
203        obj->setStyle(style);
204    }
205
206    static jint getColor(JNIEnv* env, jobject, jlong paintHandle) {
207        int color;
208        color = reinterpret_cast<Paint*>(paintHandle)->getColor();
209        return static_cast<jint>(color);
210    }
211
212    static jint getAlpha(JNIEnv* env, jobject, jlong paintHandle) {
213        int alpha;
214        alpha = reinterpret_cast<Paint*>(paintHandle)->getAlpha();
215        return static_cast<jint>(alpha);
216    }
217
218    static void setColor(JNIEnv* env, jobject, jlong paintHandle, jint color) {
219        reinterpret_cast<Paint*>(paintHandle)->setColor(color);
220    }
221
222    static void setAlpha(JNIEnv* env, jobject, jlong paintHandle, jint a) {
223        reinterpret_cast<Paint*>(paintHandle)->setAlpha(a);
224    }
225
226    static jfloat getStrokeWidth(JNIEnv* env, jobject, jlong paintHandle) {
227        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeWidth());
228    }
229
230    static void setStrokeWidth(JNIEnv* env, jobject, jlong paintHandle, jfloat width) {
231        reinterpret_cast<Paint*>(paintHandle)->setStrokeWidth(width);
232    }
233
234    static jfloat getStrokeMiter(JNIEnv* env, jobject, jlong paintHandle) {
235        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeMiter());
236    }
237
238    static void setStrokeMiter(JNIEnv* env, jobject, jlong paintHandle, jfloat miter) {
239        reinterpret_cast<Paint*>(paintHandle)->setStrokeMiter(miter);
240    }
241
242    static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) {
243        Paint* obj = reinterpret_cast<Paint*>(objHandle);
244        return static_cast<jint>(obj->getStrokeCap());
245    }
246
247    static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) {
248        Paint* obj = reinterpret_cast<Paint*>(objHandle);
249        Paint::Cap cap = static_cast<Paint::Cap>(capHandle);
250        obj->setStrokeCap(cap);
251    }
252
253    static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) {
254        Paint* obj = reinterpret_cast<Paint*>(objHandle);
255        return static_cast<jint>(obj->getStrokeJoin());
256    }
257
258    static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) {
259        Paint* obj = reinterpret_cast<Paint*>(objHandle);
260        Paint::Join join = (Paint::Join) joinHandle;
261        obj->setStrokeJoin(join);
262    }
263
264    static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) {
265        Paint* obj = reinterpret_cast<Paint*>(objHandle);
266        SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
267        SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
268        return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
269    }
270
271    static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) {
272        Paint* obj = reinterpret_cast<Paint*>(objHandle);
273        SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
274        return reinterpret_cast<jlong>(obj->setShader(shader));
275    }
276
277    static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) {
278        Paint* obj = reinterpret_cast<Paint *>(objHandle);
279        SkColorFilter* filter  = reinterpret_cast<SkColorFilter *>(filterHandle);
280        return reinterpret_cast<jlong>(obj->setColorFilter(filter));
281    }
282
283    static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) {
284        Paint* obj = reinterpret_cast<Paint*>(objHandle);
285        SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle);
286        return reinterpret_cast<jlong>(obj->setXfermode(xfermode));
287    }
288
289    static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) {
290        Paint* obj = reinterpret_cast<Paint*>(objHandle);
291        SkPathEffect* effect  = reinterpret_cast<SkPathEffect*>(effectHandle);
292        return reinterpret_cast<jlong>(obj->setPathEffect(effect));
293    }
294
295    static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) {
296        Paint* obj = reinterpret_cast<Paint*>(objHandle);
297        SkMaskFilter* maskfilter  = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
298        return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter));
299    }
300
301    static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) {
302        // TODO: in Paint refactoring, set typeface on android Paint, not Paint
303        return NULL;
304    }
305
306    static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) {
307        Paint* obj = reinterpret_cast<Paint*>(objHandle);
308        SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle));
309        return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer));
310    }
311
312    static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) {
313        Paint* obj = reinterpret_cast<Paint*>(objHandle);
314        return static_cast<jint>(obj->getTextAlign());
315    }
316
317    static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) {
318        Paint* obj = reinterpret_cast<Paint*>(objHandle);
319        Paint::Align align = static_cast<Paint::Align>(alignHandle);
320        obj->setTextAlign(align);
321    }
322
323    // generate bcp47 identifier for the supplied locale
324    static void toLanguageTag(char* output, size_t outSize,
325            const char* locale) {
326        if (output == NULL || outSize <= 0) {
327            return;
328        }
329        if (locale == NULL) {
330            output[0] = '\0';
331            return;
332        }
333        char canonicalChars[ULOC_FULLNAME_CAPACITY];
334        UErrorCode uErr = U_ZERO_ERROR;
335        uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY,
336                &uErr);
337        if (U_SUCCESS(uErr)) {
338            char likelyChars[ULOC_FULLNAME_CAPACITY];
339            uErr = U_ZERO_ERROR;
340            uloc_addLikelySubtags(canonicalChars, likelyChars,
341                    ULOC_FULLNAME_CAPACITY, &uErr);
342            if (U_SUCCESS(uErr)) {
343                uErr = U_ZERO_ERROR;
344                uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr);
345                if (U_SUCCESS(uErr)) {
346                    return;
347                } else {
348                    ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars,
349                            u_errorName(uErr));
350                }
351            } else {
352                ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s",
353                        canonicalChars, u_errorName(uErr));
354            }
355        } else {
356            ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale,
357                    u_errorName(uErr));
358        }
359        // unable to build a proper language identifier
360        output[0] = '\0';
361    }
362
363    static void toLanguageTags(std::string* output, const char* locales) {
364        if (output == NULL) {
365            return;
366        }
367        if (locales == NULL) {
368            output->clear();
369            return;
370        }
371
372        char langTag[ULOC_FULLNAME_CAPACITY];
373        const char* commaLoc = strchr(locales, ',');
374        if (commaLoc == NULL) {
375            assert(locales[0] != '\0');  // the string should not be empty
376            toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, locales);
377            *output = langTag;
378            return;
379        }
380
381        size_t len = strlen(locales);
382        char locale[len];
383        output->clear();
384        output->reserve(len);
385        const char* lastStart = locales;
386        do {
387            assert(lastStart > commaLoc);  // the substring should not be empty
388            strncpy(locale, lastStart, commaLoc - lastStart);
389            locale[commaLoc - lastStart] = '\0';
390            toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, locale);
391            if (langTag[0] != '\0') {
392                output->append(langTag);
393                output->push_back(',');
394            }
395            lastStart = commaLoc + 1;
396            commaLoc = strchr(lastStart, ',');
397        } while (commaLoc != NULL);
398        assert(lastStart[0] != '\0');  // the final substring should not be empty
399        toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, lastStart);
400        if (langTag[0] != '\0') {
401            output->append(langTag);
402        }
403    }
404
405    static void setTextLocales(JNIEnv* env, jobject clazz, jlong objHandle, jstring locales) {
406        Paint* obj = reinterpret_cast<Paint*>(objHandle);
407        ScopedUtfChars localesChars(env, locales);
408        if (sSingleEntryLocalesCache.javaLocales != localesChars.c_str()) {
409            sSingleEntryLocalesCache.javaLocales = localesChars.c_str();
410            toLanguageTags(&sSingleEntryLocalesCache.languageTags, localesChars.c_str());
411        }
412
413        obj->setTextLocales(sSingleEntryLocalesCache.languageTags);
414    }
415
416    static jboolean isElegantTextHeight(JNIEnv* env, jobject, jlong paintHandle) {
417        Paint* obj = reinterpret_cast<Paint*>(paintHandle);
418        return obj->getFontVariant() == VARIANT_ELEGANT;
419    }
420
421    static void setElegantTextHeight(JNIEnv* env, jobject, jlong paintHandle, jboolean aa) {
422        Paint* obj = reinterpret_cast<Paint*>(paintHandle);
423        obj->setFontVariant(aa ? VARIANT_ELEGANT : VARIANT_DEFAULT);
424    }
425
426    static jfloat getTextSize(JNIEnv* env, jobject, jlong paintHandle) {
427        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSize());
428    }
429
430    static void setTextSize(JNIEnv* env, jobject, jlong paintHandle, jfloat textSize) {
431        reinterpret_cast<Paint*>(paintHandle)->setTextSize(textSize);
432    }
433
434    static jfloat getTextScaleX(JNIEnv* env, jobject, jlong paintHandle) {
435        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextScaleX());
436    }
437
438    static void setTextScaleX(JNIEnv* env, jobject, jlong paintHandle, jfloat scaleX) {
439        reinterpret_cast<Paint*>(paintHandle)->setTextScaleX(scaleX);
440    }
441
442    static jfloat getTextSkewX(JNIEnv* env, jobject, jlong paintHandle) {
443        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSkewX());
444    }
445
446    static void setTextSkewX(JNIEnv* env, jobject, jlong paintHandle, jfloat skewX) {
447        reinterpret_cast<Paint*>(paintHandle)->setTextSkewX(skewX);
448    }
449
450    static jfloat getLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle) {
451        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
452        return paint->getLetterSpacing();
453    }
454
455    static void setLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat letterSpacing) {
456        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
457        paint->setLetterSpacing(letterSpacing);
458    }
459
460    static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) {
461        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
462        if (!settings) {
463            paint->setFontFeatureSettings(std::string());
464        } else {
465            ScopedUtfChars settingsChars(env, settings);
466            paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size()));
467        }
468    }
469
470    static jint getHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) {
471        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
472        return paint->getHyphenEdit();
473    }
474
475    static void setHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) {
476        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
477        paint->setHyphenEdit((uint32_t)hyphen);
478    }
479
480    static SkScalar getMetricsInternal(jlong paintHandle, jlong typefaceHandle,
481            Paint::FontMetrics *metrics) {
482        const int kElegantTop = 2500;
483        const int kElegantBottom = -1000;
484        const int kElegantAscent = 1900;
485        const int kElegantDescent = -500;
486        const int kElegantLeading = 0;
487        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
488        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
489        typeface = TypefaceImpl_resolveDefault(typeface);
490        FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle);
491        float saveSkewX = paint->getTextSkewX();
492        bool savefakeBold = paint->isFakeBoldText();
493        MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery);
494        SkScalar spacing = paint->getFontMetrics(metrics);
495        // The populateSkPaint call may have changed fake bold / text skew
496        // because we want to measure with those effects applied, so now
497        // restore the original settings.
498        paint->setTextSkewX(saveSkewX);
499        paint->setFakeBoldText(savefakeBold);
500        if (paint->getFontVariant() == VARIANT_ELEGANT) {
501            SkScalar size = paint->getTextSize();
502            metrics->fTop = -size * kElegantTop / 2048;
503            metrics->fBottom = -size * kElegantBottom / 2048;
504            metrics->fAscent = -size * kElegantAscent / 2048;
505            metrics->fDescent = -size * kElegantDescent / 2048;
506            metrics->fLeading = size * kElegantLeading / 2048;
507            spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
508        }
509        return spacing;
510    }
511
512    static jfloat ascent(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle) {
513        Paint::FontMetrics metrics;
514        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
515        return SkScalarToFloat(metrics.fAscent);
516    }
517
518    static jfloat descent(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle) {
519        Paint::FontMetrics metrics;
520        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
521        return SkScalarToFloat(metrics.fDescent);
522    }
523
524    static jfloat getFontMetrics(JNIEnv* env, jobject, jlong paintHandle,
525            jlong typefaceHandle, jobject metricsObj) {
526        Paint::FontMetrics metrics;
527        SkScalar spacing = getMetricsInternal(paintHandle, typefaceHandle, &metrics);
528
529        if (metricsObj) {
530            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
531            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
532            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
533            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
534            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
535            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
536        }
537        return SkScalarToFloat(spacing);
538    }
539
540    static jint getFontMetricsInt(JNIEnv* env, jobject, jlong paintHandle,
541            jlong typefaceHandle, jobject metricsObj) {
542        Paint::FontMetrics metrics;
543
544        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
545        int ascent = SkScalarRoundToInt(metrics.fAscent);
546        int descent = SkScalarRoundToInt(metrics.fDescent);
547        int leading = SkScalarRoundToInt(metrics.fLeading);
548
549        if (metricsObj) {
550            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
551            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
552            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
553            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
554            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
555            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
556        }
557        return descent - ascent + leading;
558    }
559
560    static jfloat doTextAdvances(JNIEnv *env, Paint *paint, TypefaceImpl* typeface,
561            const jchar *text, jint start, jint count, jint contextCount, jint bidiFlags,
562            jfloatArray advances, jint advancesIndex) {
563        NPE_CHECK_RETURN_ZERO(env, text);
564
565        if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
566            doThrowAIOOBE(env);
567            return 0;
568        }
569        if (count == 0) {
570            return 0;
571        }
572        if (advances) {
573            size_t advancesLength = env->GetArrayLength(advances);
574            if ((size_t)(count  + advancesIndex) > advancesLength) {
575                doThrowAIOOBE(env);
576                return 0;
577            }
578        }
579
580        Layout layout;
581        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, start, count,
582                contextCount);
583        if (advances != NULL) {
584            std::unique_ptr<jfloat> advancesArray(new jfloat[count]);
585            layout.getAdvances(advancesArray.get());
586            env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray.get());
587        }
588        return layout.getAdvance();
589    }
590
591    static jfloat getTextAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
592            jlong typefaceHandle,
593            jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
594            jint bidiFlags, jfloatArray advances, jint advancesIndex) {
595        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
596        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
597        jchar* textArray = env->GetCharArrayElements(text, NULL);
598        jfloat result = doTextAdvances(env, paint, typeface, textArray + contextIndex,
599                index - contextIndex, count, contextCount, bidiFlags, advances, advancesIndex);
600        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
601        return result;
602    }
603
604    static jfloat getTextAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
605            jlong typefaceHandle,
606            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint bidiFlags,
607            jfloatArray advances, jint advancesIndex) {
608        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
609        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
610        const jchar* textArray = env->GetStringChars(text, NULL);
611        jfloat result = doTextAdvances(env, paint, typeface, textArray + contextStart,
612                start - contextStart, end - start, contextEnd - contextStart, bidiFlags,
613                advances, advancesIndex);
614        env->ReleaseStringChars(text, textArray);
615        return result;
616    }
617
618    static jint doTextRunCursor(JNIEnv *env, Paint* paint, const jchar *text, jint start,
619            jint count, jint flags, jint offset, jint opt) {
620        GraphemeBreak::MoveOpt moveOpt = GraphemeBreak::MoveOpt(opt);
621        size_t result = GraphemeBreak::getTextRunCursor(text, start, count, offset, moveOpt);
622        return static_cast<jint>(result);
623    }
624
625    static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
626            jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) {
627        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
628        jchar* textArray = env->GetCharArrayElements(text, NULL);
629        jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, dir,
630                offset, cursorOpt);
631        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
632        return result;
633    }
634
635    static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text,
636            jint contextStart, jint contextEnd, jint dir, jint offset, jint cursorOpt) {
637        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
638        const jchar* textArray = env->GetStringChars(text, NULL);
639        jint result = doTextRunCursor(env, paint, textArray, contextStart,
640                contextEnd - contextStart, dir, offset, cursorOpt);
641        env->ReleaseStringChars(text, textArray);
642        return result;
643    }
644
645    class GetTextFunctor {
646    public:
647        GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, Paint* paint,
648                    uint16_t* glyphs, SkPoint* pos)
649                : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
650        }
651
652        void operator()(size_t start, size_t end) {
653            for (size_t i = start; i < end; i++) {
654                glyphs[i] = layout.getGlyphId(i);
655                pos[i].fX = x + layout.getX(i);
656                pos[i].fY = y + layout.getY(i);
657            }
658            if (start == 0) {
659                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
660            } else {
661                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
662                path->addPath(tmpPath);
663            }
664        }
665    private:
666        const Layout& layout;
667        SkPath* path;
668        jfloat x;
669        jfloat y;
670        Paint* paint;
671        uint16_t* glyphs;
672        SkPoint* pos;
673        SkPath tmpPath;
674    };
675
676    static void getTextPath(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar* text,
677            jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
678        Layout layout;
679        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count);
680        size_t nGlyphs = layout.nGlyphs();
681        uint16_t* glyphs = new uint16_t[nGlyphs];
682        SkPoint* pos = new SkPoint[nGlyphs];
683
684        x += MinikinUtils::xOffsetForTextAlign(paint, layout);
685        Paint::Align align = paint->getTextAlign();
686        paint->setTextAlign(Paint::kLeft_Align);
687        paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
688        GetTextFunctor f(layout, path, x, y, paint, glyphs, pos);
689        MinikinUtils::forFontRun(layout, paint, f);
690        paint->setTextAlign(align);
691        delete[] glyphs;
692        delete[] pos;
693    }
694
695    static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle,
696            jlong typefaceHandle, jint bidiFlags,
697            jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
698        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
699        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
700        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
701        const jchar* textArray = env->GetCharArrayElements(text, NULL);
702        getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
703        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
704    }
705
706    static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle,
707            jlong typefaceHandle, jint bidiFlags,
708            jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
709        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
710        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
711        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
712        const jchar* textArray = env->GetStringChars(text, NULL);
713        getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
714        env->ReleaseStringChars(text, textArray);
715    }
716
717    static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius,
718                               jfloat dx, jfloat dy, jint color) {
719        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
720        if (radius <= 0) {
721            paint->setLooper(NULL);
722        }
723        else {
724            SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
725            paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref();
726        }
727    }
728
729    static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) {
730        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
731        return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL);
732    }
733
734    static int breakText(JNIEnv* env, const Paint& paint, TypefaceImpl* typeface, const jchar text[],
735                         int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
736                         const bool forwardScan) {
737        size_t measuredCount = 0;
738        float measured = 0;
739
740        Layout layout;
741        MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
742        float* advances = new float[count];
743        layout.getAdvances(advances);
744
745        for (int i = 0; i < count; i++) {
746            // traverse in the given direction
747            int index = forwardScan ? i : (count - i - 1);
748            float width = advances[index];
749            if (measured + width > maxWidth) {
750                break;
751            }
752            // properly handle clusters when scanning backwards
753            if (forwardScan || width != 0.0f) {
754                measuredCount = i + 1;
755            }
756            measured += width;
757        }
758        delete[] advances;
759
760        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
761            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
762            jfloat* array = autoMeasured.ptr();
763            array[0] = measured;
764        }
765        return measuredCount;
766    }
767
768    static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray jtext,
769            jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
770        NPE_CHECK_RETURN_ZERO(env, jtext);
771
772        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
773        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
774
775        bool forwardTextDirection;
776        if (count < 0) {
777            forwardTextDirection = false;
778            count = -count;
779        }
780        else {
781            forwardTextDirection = true;
782        }
783
784        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
785            doThrowAIOOBE(env);
786            return 0;
787        }
788
789        const jchar* text = env->GetCharArrayElements(jtext, NULL);
790        count = breakText(env, *paint, typeface, text + index, count, maxWidth,
791                          bidiFlags, jmeasuredWidth, forwardTextDirection);
792        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
793                                      JNI_ABORT);
794        return count;
795    }
796
797    static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext,
798                jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
799        NPE_CHECK_RETURN_ZERO(env, jtext);
800
801        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
802        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
803
804        int count = env->GetStringLength(jtext);
805        const jchar* text = env->GetStringChars(jtext, NULL);
806        count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, forwards);
807        env->ReleaseStringChars(jtext, text);
808        return count;
809    }
810
811    static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
812            const Paint& paint, TypefaceImpl* typeface, jint bidiFlags) {
813        SkRect  r;
814        SkIRect ir;
815
816        Layout layout;
817        MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
818        MinikinRect rect;
819        layout.getBounds(&rect);
820        r.fLeft = rect.mLeft;
821        r.fTop = rect.mTop;
822        r.fRight = rect.mRight;
823        r.fBottom = rect.mBottom;
824        r.roundOut(&ir);
825        GraphicsJNI::irect_to_jrect(ir, env, bounds);
826    }
827
828    static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
829                                jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
830        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
831        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
832        const jchar* textArray = env->GetStringChars(text, NULL);
833        doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
834        env->ReleaseStringChars(text, textArray);
835    }
836
837    static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
838                        jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
839        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
840        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
841        const jchar* textArray = env->GetCharArrayElements(text, NULL);
842        doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
843        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
844                                      JNI_ABORT);
845    }
846
847    static jboolean layoutContainsNotdef(const Layout& layout) {
848        for (size_t i = 0; i < layout.nGlyphs(); i++) {
849            if (layout.getGlyphId(i) == 0) {
850                return true;
851            }
852        }
853        return false;
854    }
855
856    static jboolean hasGlyph(JNIEnv *env, jclass, jlong paintHandle, jlong typefaceHandle,
857            jint bidiFlags, jstring string) {
858        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
859        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
860        ScopedStringChars str(env, string);
861
862        /* Start by rejecting unsupported base code point and variation selector pairs. */
863        size_t nChars = 0;
864        const uint32_t kStartOfString = 0xFFFFFFFF;
865        uint32_t prevCp = kStartOfString;
866        for (size_t i = 0; i < str.size(); i++) {
867            jchar cu = str[i];
868            uint32_t cp = cu;
869            if (U16_IS_TRAIL(cu)) {
870                // invalid UTF-16, unpaired trailing surrogate
871                return false;
872            } else if (U16_IS_LEAD(cu)) {
873                if (i + 1 == str.size()) {
874                    // invalid UTF-16, unpaired leading surrogate at end of string
875                    return false;
876                }
877                i++;
878                jchar cu2 = str[i];
879                if (!U16_IS_TRAIL(cu2)) {
880                    // invalid UTF-16, unpaired leading surrogate
881                    return false;
882                }
883                cp = U16_GET_SUPPLEMENTARY(cu, cu2);
884            }
885
886            if (prevCp != kStartOfString &&
887                ((0xFE00 <= cp && cp <= 0xFE0F) || (0xE0100 <= cp && cp <= 0xE01EF)) &&
888                !MinikinUtils::hasVariationSelector(typeface, prevCp, cp)) {
889                // No font has a glyph for the code point and variation selector pair.
890                return false;
891            }
892            nChars++;
893            prevCp = cp;
894        }
895        Layout layout;
896        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, str.get(), 0, str.size(),
897                str.size());
898        size_t nGlyphs = layout.nGlyphs();
899        if (nGlyphs != 1 && nChars > 1) {
900            // multiple-character input, and was not a ligature
901            // TODO: handle ZWJ/ZWNJ characters specially so we can detect certain ligatures
902            // in joining scripts, such as Arabic and Mongolian.
903            return false;
904        }
905        return nGlyphs > 0 && !layoutContainsNotdef(layout);
906    }
907
908    static jfloat doRunAdvance(const Paint* paint, TypefaceImpl* typeface, const jchar buf[],
909            jint start, jint count, jint bufSize, jboolean isRtl, jint offset) {
910        Layout layout;
911        int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
912        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, buf, start, count, bufSize);
913        return getRunAdvance(layout, buf, start, count, offset);
914    }
915
916    static jfloat getRunAdvance___CIIIIZI_F(JNIEnv *env, jclass, jlong paintHandle,
917            jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
918            jint contextEnd, jboolean isRtl, jint offset) {
919        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
920        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
921        jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL);
922        jfloat result = doRunAdvance(paint, typeface, textArray + contextStart,
923                start - contextStart, end - start, contextEnd - contextStart, isRtl,
924                offset - contextStart);
925        env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
926        return result;
927    }
928
929    static jint doOffsetForAdvance(const Paint* paint, TypefaceImpl* typeface, const jchar buf[],
930            jint start, jint count, jint bufSize, jboolean isRtl, jfloat advance) {
931        Layout layout;
932        int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
933        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, buf, start, count, bufSize);
934        return getOffsetForAdvance(layout, buf, start, count, advance);
935    }
936    static jint getOffsetForAdvance___CIIIIZF_I(JNIEnv *env, jclass, jlong paintHandle,
937            jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
938            jint contextEnd, jboolean isRtl, jfloat advance) {
939        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
940        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
941        jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL);
942        jint result = doOffsetForAdvance(paint, typeface, textArray + contextStart,
943                start - contextStart, end - start, contextEnd - contextStart, isRtl, advance);
944        result += contextStart;
945        env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
946        return result;
947    }
948
949}; // namespace PaintGlue
950
951static const JNINativeMethod methods[] = {
952    {"nFinalizer", "(J)V", (void*) PaintGlue::finalizer},
953    {"nInit","()J", (void*) PaintGlue::init},
954    {"nInitWithPaint","(J)J", (void*) PaintGlue::initWithPaint},
955
956    {"nReset","!(J)V", (void*) PaintGlue::reset},
957    {"nSet","!(JJ)V", (void*) PaintGlue::assign},
958    {"nGetFlags","!(J)I", (void*) PaintGlue::getFlags},
959    {"nSetFlags","!(JI)V", (void*) PaintGlue::setFlags},
960    {"nGetHinting","!(J)I", (void*) PaintGlue::getHinting},
961    {"nSetHinting","!(JI)V", (void*) PaintGlue::setHinting},
962    {"nSetAntiAlias","!(JZ)V", (void*) PaintGlue::setAntiAlias},
963    {"nSetSubpixelText","!(JZ)V", (void*) PaintGlue::setSubpixelText},
964    {"nSetLinearText","!(JZ)V", (void*) PaintGlue::setLinearText},
965    {"nSetUnderlineText","!(JZ)V", (void*) PaintGlue::setUnderlineText},
966    {"nSetStrikeThruText","!(JZ)V", (void*) PaintGlue::setStrikeThruText},
967    {"nSetFakeBoldText","!(JZ)V", (void*) PaintGlue::setFakeBoldText},
968    {"nSetFilterBitmap","!(JZ)V", (void*) PaintGlue::setFilterBitmap},
969    {"nSetDither","!(JZ)V", (void*) PaintGlue::setDither},
970    {"nGetStyle","!(J)I", (void*) PaintGlue::getStyle},
971    {"nSetStyle","!(JI)V", (void*) PaintGlue::setStyle},
972    {"nGetColor","!(J)I", (void*) PaintGlue::getColor},
973    {"nSetColor","!(JI)V", (void*) PaintGlue::setColor},
974    {"nGetAlpha","!(J)I", (void*) PaintGlue::getAlpha},
975    {"nSetAlpha","!(JI)V", (void*) PaintGlue::setAlpha},
976    {"nGetStrokeWidth","!(J)F", (void*) PaintGlue::getStrokeWidth},
977    {"nSetStrokeWidth","!(JF)V", (void*) PaintGlue::setStrokeWidth},
978    {"nGetStrokeMiter","!(J)F", (void*) PaintGlue::getStrokeMiter},
979    {"nSetStrokeMiter","!(JF)V", (void*) PaintGlue::setStrokeMiter},
980    {"nGetStrokeCap","!(J)I", (void*) PaintGlue::getStrokeCap},
981    {"nSetStrokeCap","!(JI)V", (void*) PaintGlue::setStrokeCap},
982    {"nGetStrokeJoin","!(J)I", (void*) PaintGlue::getStrokeJoin},
983    {"nSetStrokeJoin","!(JI)V", (void*) PaintGlue::setStrokeJoin},
984    {"nGetFillPath","!(JJJ)Z", (void*) PaintGlue::getFillPath},
985    {"nSetShader","!(JJ)J", (void*) PaintGlue::setShader},
986    {"nSetColorFilter","!(JJ)J", (void*) PaintGlue::setColorFilter},
987    {"nSetXfermode","!(JJ)J", (void*) PaintGlue::setXfermode},
988    {"nSetPathEffect","!(JJ)J", (void*) PaintGlue::setPathEffect},
989    {"nSetMaskFilter","!(JJ)J", (void*) PaintGlue::setMaskFilter},
990    {"nSetTypeface","!(JJ)J", (void*) PaintGlue::setTypeface},
991    {"nSetRasterizer","!(JJ)J", (void*) PaintGlue::setRasterizer},
992    {"nGetTextAlign","!(J)I", (void*) PaintGlue::getTextAlign},
993    {"nSetTextAlign","!(JI)V", (void*) PaintGlue::setTextAlign},
994    {"nSetTextLocales","!(JLjava/lang/String;)V", (void*) PaintGlue::setTextLocales},
995    {"nIsElegantTextHeight","!(J)Z", (void*) PaintGlue::isElegantTextHeight},
996    {"nSetElegantTextHeight","!(JZ)V", (void*) PaintGlue::setElegantTextHeight},
997    {"nGetTextSize","!(J)F", (void*) PaintGlue::getTextSize},
998    {"nSetTextSize","!(JF)V", (void*) PaintGlue::setTextSize},
999    {"nGetTextScaleX","!(J)F", (void*) PaintGlue::getTextScaleX},
1000    {"nSetTextScaleX","!(JF)V", (void*) PaintGlue::setTextScaleX},
1001    {"nGetTextSkewX","!(J)F", (void*) PaintGlue::getTextSkewX},
1002    {"nSetTextSkewX","!(JF)V", (void*) PaintGlue::setTextSkewX},
1003    {"nGetLetterSpacing","!(J)F", (void*) PaintGlue::getLetterSpacing},
1004    {"nSetLetterSpacing","!(JF)V", (void*) PaintGlue::setLetterSpacing},
1005    {"nSetFontFeatureSettings","(JLjava/lang/String;)V",
1006            (void*) PaintGlue::setFontFeatureSettings},
1007    {"nGetHyphenEdit", "!(J)I", (void*) PaintGlue::getHyphenEdit},
1008    {"nSetHyphenEdit", "!(JI)V", (void*) PaintGlue::setHyphenEdit},
1009    {"nAscent","!(JJ)F", (void*) PaintGlue::ascent},
1010    {"nDescent","!(JJ)F", (void*) PaintGlue::descent},
1011
1012    {"nGetFontMetrics", "!(JJLandroid/graphics/Paint$FontMetrics;)F",
1013            (void*)PaintGlue::getFontMetrics},
1014    {"nGetFontMetricsInt", "!(JJLandroid/graphics/Paint$FontMetricsInt;)I",
1015            (void*)PaintGlue::getFontMetricsInt},
1016
1017    {"nBreakText","(JJ[CIIFI[F)I", (void*) PaintGlue::breakTextC},
1018    {"nBreakText","(JJLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS},
1019    {"nGetTextAdvances","(JJ[CIIIII[FI)F",
1020            (void*) PaintGlue::getTextAdvances___CIIIII_FI},
1021    {"nGetTextAdvances","(JJLjava/lang/String;IIIII[FI)F",
1022            (void*) PaintGlue::getTextAdvances__StringIIIII_FI},
1023
1024    {"nGetTextRunCursor", "(J[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C},
1025    {"nGetTextRunCursor", "(JLjava/lang/String;IIIII)I",
1026            (void*) PaintGlue::getTextRunCursor__String},
1027    {"nGetTextPath", "(JJI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C},
1028    {"nGetTextPath", "(JJILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String},
1029    {"nGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V",
1030            (void*) PaintGlue::getStringBounds },
1031    {"nGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V",
1032            (void*) PaintGlue::getCharArrayBounds },
1033    {"nHasGlyph", "(JJILjava/lang/String;)Z", (void*) PaintGlue::hasGlyph },
1034    {"nGetRunAdvance", "(JJ[CIIIIZI)F", (void*) PaintGlue::getRunAdvance___CIIIIZI_F},
1035    {"nGetOffsetForAdvance", "(JJ[CIIIIZF)I",
1036            (void*) PaintGlue::getOffsetForAdvance___CIIIIZF_I},
1037
1038    {"nSetShadowLayer", "!(JFFFI)V", (void*)PaintGlue::setShadowLayer},
1039    {"nHasShadowLayer", "!(J)Z", (void*)PaintGlue::hasShadowLayer}
1040};
1041
1042int register_android_graphics_Paint(JNIEnv* env) {
1043    gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics");
1044    gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class);
1045
1046    gFontMetrics_fieldID.top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F");
1047    gFontMetrics_fieldID.ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F");
1048    gFontMetrics_fieldID.descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F");
1049    gFontMetrics_fieldID.bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F");
1050    gFontMetrics_fieldID.leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F");
1051
1052    gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt");
1053    gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class);
1054
1055    gFontMetricsInt_fieldID.top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I");
1056    gFontMetricsInt_fieldID.ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I");
1057    gFontMetricsInt_fieldID.descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I");
1058    gFontMetricsInt_fieldID.bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I");
1059    gFontMetricsInt_fieldID.leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I");
1060
1061    return RegisterMethodsOrDie(env, "android/graphics/Paint", methods, NELEM(methods));
1062}
1063
1064}
1065