Paint.cpp revision 76f6a86de25e1bf74717e047e55fd44b089673f3 
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 <ScopedUtfChars.h>
26
27#include "SkBlurDrawLooper.h"
28#include "SkColorFilter.h"
29#include "SkMaskFilter.h"
30#include "SkRasterizer.h"
31#include "SkShader.h"
32#include "SkTypeface.h"
33#include "SkXfermode.h"
34#include "unicode/uloc.h"
35#include "unicode/ushape.h"
36#include "utils/Blur.h"
37
38#include <minikin/GraphemeBreak.h>
39#include "MinikinSkia.h"
40#include "MinikinUtils.h"
41#include "Paint.h"
42#include "TypefaceImpl.h"
43
44// temporary for debugging
45#include <Caches.h>
46#include <utils/Log.h>
47
48namespace android {
49
50struct JMetricsID {
51    jfieldID    top;
52    jfieldID    ascent;
53    jfieldID    descent;
54    jfieldID    bottom;
55    jfieldID    leading;
56};
57
58static jclass   gFontMetrics_class;
59static JMetricsID gFontMetrics_fieldID;
60
61static jclass   gFontMetricsInt_class;
62static JMetricsID gFontMetricsInt_fieldID;
63
64static void defaultSettingsForAndroid(Paint* paint) {
65    // GlyphID encoding is required because we are using Harfbuzz shaping
66    paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
67}
68
69class PaintGlue {
70public:
71    enum MoveOpt {
72        AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
73    };
74
75    static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
76        Paint* obj = reinterpret_cast<Paint*>(objHandle);
77        delete obj;
78    }
79
80    static jlong init(JNIEnv* env, jobject clazz) {
81        Paint* obj = new Paint();
82        defaultSettingsForAndroid(obj);
83        return reinterpret_cast<jlong>(obj);
84    }
85
86    static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
87        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
88        Paint* obj = new Paint(*paint);
89        return reinterpret_cast<jlong>(obj);
90    }
91
92    static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
93        Paint* obj = reinterpret_cast<Paint*>(objHandle);
94        obj->reset();
95        defaultSettingsForAndroid(obj);
96    }
97
98    static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) {
99        Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle);
100        const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle);
101        *dst = *src;
102    }
103
104    // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
105    static const uint32_t sFilterBitmapFlag = 0x02;
106
107    static jint getFlags(JNIEnv* env, jobject paint) {
108        NPE_CHECK_RETURN_ZERO(env, paint);
109        Paint* nativePaint = GraphicsJNI::getNativePaint(env, paint);
110        uint32_t result = nativePaint->getFlags();
111        result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away.
112        if (nativePaint->getFilterLevel() != Paint::kNone_FilterLevel) {
113            result |= sFilterBitmapFlag;
114        }
115        return static_cast<jint>(result);
116    }
117
118    static void setFlags(JNIEnv* env, jobject paint, jint flags) {
119        NPE_CHECK_RETURN_VOID(env, paint);
120        Paint* nativePaint = GraphicsJNI::getNativePaint(env, paint);
121        // Instead of modifying 0x02, change the filter level.
122        nativePaint->setFilterLevel(flags & sFilterBitmapFlag
123                ? Paint::kLow_FilterLevel
124                : Paint::kNone_FilterLevel);
125        // Don't pass through filter flag, which is no longer stored in paint's flags.
126        flags &= ~sFilterBitmapFlag;
127        // Use the existing value for 0x02.
128        const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag;
129        flags |= existing0x02Flag;
130        nativePaint->setFlags(flags);
131    }
132
133    static jint getHinting(JNIEnv* env, jobject paint) {
134        NPE_CHECK_RETURN_ZERO(env, paint);
135        return GraphicsJNI::getNativePaint(env, paint)->getHinting()
136                == Paint::kNo_Hinting ? 0 : 1;
137    }
138
139    static void setHinting(JNIEnv* env, jobject paint, jint mode) {
140        NPE_CHECK_RETURN_VOID(env, paint);
141        GraphicsJNI::getNativePaint(env, paint)->setHinting(
142                mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting);
143    }
144
145    static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) {
146        NPE_CHECK_RETURN_VOID(env, paint);
147        GraphicsJNI::getNativePaint(env, paint)->setAntiAlias(aa);
148    }
149
150    static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) {
151        NPE_CHECK_RETURN_VOID(env, paint);
152        GraphicsJNI::getNativePaint(env, paint)->setLinearText(linearText);
153    }
154
155    static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) {
156        NPE_CHECK_RETURN_VOID(env, paint);
157        GraphicsJNI::getNativePaint(env, paint)->setSubpixelText(subpixelText);
158    }
159
160    static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) {
161        NPE_CHECK_RETURN_VOID(env, paint);
162        GraphicsJNI::getNativePaint(env, paint)->setUnderlineText(underlineText);
163    }
164
165    static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) {
166        NPE_CHECK_RETURN_VOID(env, paint);
167        GraphicsJNI::getNativePaint(env, paint)->setStrikeThruText(strikeThruText);
168    }
169
170    static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) {
171        NPE_CHECK_RETURN_VOID(env, paint);
172        GraphicsJNI::getNativePaint(env, paint)->setFakeBoldText(fakeBoldText);
173    }
174
175    static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) {
176        NPE_CHECK_RETURN_VOID(env, paint);
177        GraphicsJNI::getNativePaint(env, paint)->setFilterLevel(
178                filterBitmap ? Paint::kLow_FilterLevel : Paint::kNone_FilterLevel);
179    }
180
181    static void setDither(JNIEnv* env, jobject paint, jboolean dither) {
182        NPE_CHECK_RETURN_VOID(env, paint);
183        GraphicsJNI::getNativePaint(env, paint)->setDither(dither);
184    }
185
186    static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) {
187        Paint* obj = reinterpret_cast<Paint*>(objHandle);
188        return static_cast<jint>(obj->getStyle());
189    }
190
191    static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) {
192        Paint* obj = reinterpret_cast<Paint*>(objHandle);
193        Paint::Style style = static_cast<Paint::Style>(styleHandle);
194        obj->setStyle(style);
195    }
196
197    static jint getColor(JNIEnv* env, jobject paint) {
198        NPE_CHECK_RETURN_ZERO(env, paint);
199        int color;
200        color = GraphicsJNI::getNativePaint(env, paint)->getColor();
201        return static_cast<jint>(color);
202    }
203
204    static jint getAlpha(JNIEnv* env, jobject paint) {
205        NPE_CHECK_RETURN_ZERO(env, paint);
206        int alpha;
207        alpha = GraphicsJNI::getNativePaint(env, paint)->getAlpha();
208        return static_cast<jint>(alpha);
209    }
210
211    static void setColor(JNIEnv* env, jobject paint, jint color) {
212        NPE_CHECK_RETURN_VOID(env, paint);
213        GraphicsJNI::getNativePaint(env, paint)->setColor(color);
214    }
215
216    static void setAlpha(JNIEnv* env, jobject paint, jint a) {
217        NPE_CHECK_RETURN_VOID(env, paint);
218        GraphicsJNI::getNativePaint(env, paint)->setAlpha(a);
219    }
220
221    static jfloat getStrokeWidth(JNIEnv* env, jobject paint) {
222        NPE_CHECK_RETURN_ZERO(env, paint);
223        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeWidth());
224    }
225
226    static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) {
227        NPE_CHECK_RETURN_VOID(env, paint);
228        GraphicsJNI::getNativePaint(env, paint)->setStrokeWidth(width);
229    }
230
231    static jfloat getStrokeMiter(JNIEnv* env, jobject paint) {
232        NPE_CHECK_RETURN_ZERO(env, paint);
233        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeMiter());
234    }
235
236    static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) {
237        NPE_CHECK_RETURN_VOID(env, paint);
238        GraphicsJNI::getNativePaint(env, paint)->setStrokeMiter(miter);
239    }
240
241    static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) {
242        Paint* obj = reinterpret_cast<Paint*>(objHandle);
243        return static_cast<jint>(obj->getStrokeCap());
244    }
245
246    static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) {
247        Paint* obj = reinterpret_cast<Paint*>(objHandle);
248        Paint::Cap cap = static_cast<Paint::Cap>(capHandle);
249        obj->setStrokeCap(cap);
250    }
251
252    static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) {
253        Paint* obj = reinterpret_cast<Paint*>(objHandle);
254        return static_cast<jint>(obj->getStrokeJoin());
255    }
256
257    static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) {
258        Paint* obj = reinterpret_cast<Paint*>(objHandle);
259        Paint::Join join = (Paint::Join) joinHandle;
260        obj->setStrokeJoin(join);
261    }
262
263    static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) {
264        Paint* obj = reinterpret_cast<Paint*>(objHandle);
265        SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
266        SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
267        return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
268    }
269
270    static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) {
271        Paint* obj = reinterpret_cast<Paint*>(objHandle);
272        SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
273        return reinterpret_cast<jlong>(obj->setShader(shader));
274    }
275
276    static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) {
277        Paint* obj = reinterpret_cast<Paint *>(objHandle);
278        SkColorFilter* filter  = reinterpret_cast<SkColorFilter *>(filterHandle);
279        return reinterpret_cast<jlong>(obj->setColorFilter(filter));
280    }
281
282    static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) {
283        Paint* obj = reinterpret_cast<Paint*>(objHandle);
284        SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle);
285        return reinterpret_cast<jlong>(obj->setXfermode(xfermode));
286    }
287
288    static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) {
289        Paint* obj = reinterpret_cast<Paint*>(objHandle);
290        SkPathEffect* effect  = reinterpret_cast<SkPathEffect*>(effectHandle);
291        return reinterpret_cast<jlong>(obj->setPathEffect(effect));
292    }
293
294    static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) {
295        Paint* obj = reinterpret_cast<Paint*>(objHandle);
296        SkMaskFilter* maskfilter  = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
297        return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter));
298    }
299
300    static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) {
301        // TODO: in Paint refactoring, set typeface on android Paint, not Paint
302        return NULL;
303    }
304
305    static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) {
306        Paint* obj = reinterpret_cast<Paint*>(objHandle);
307        SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle));
308        return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer));
309    }
310
311    static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) {
312        Paint* obj = reinterpret_cast<Paint*>(objHandle);
313        return static_cast<jint>(obj->getTextAlign());
314    }
315
316    static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) {
317        Paint* obj = reinterpret_cast<Paint*>(objHandle);
318        Paint::Align align = static_cast<Paint::Align>(alignHandle);
319        obj->setTextAlign(align);
320    }
321
322    // generate bcp47 identifier for the supplied locale
323    static void toLanguageTag(char* output, size_t outSize,
324            const char* locale) {
325        if (output == NULL || outSize <= 0) {
326            return;
327        }
328        if (locale == NULL) {
329            output[0] = '\0';
330            return;
331        }
332        char canonicalChars[ULOC_FULLNAME_CAPACITY];
333        UErrorCode uErr = U_ZERO_ERROR;
334        uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY,
335                &uErr);
336        if (U_SUCCESS(uErr)) {
337            char likelyChars[ULOC_FULLNAME_CAPACITY];
338            uErr = U_ZERO_ERROR;
339            uloc_addLikelySubtags(canonicalChars, likelyChars,
340                    ULOC_FULLNAME_CAPACITY, &uErr);
341            if (U_SUCCESS(uErr)) {
342                uErr = U_ZERO_ERROR;
343                uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr);
344                if (U_SUCCESS(uErr)) {
345                    return;
346                } else {
347                    ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars,
348                            u_errorName(uErr));
349                }
350            } else {
351                ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s",
352                        canonicalChars, u_errorName(uErr));
353            }
354        } else {
355            ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale,
356                    u_errorName(uErr));
357        }
358        // unable to build a proper language identifier
359        output[0] = '\0';
360    }
361
362    static void setTextLocale(JNIEnv* env, jobject clazz, jlong objHandle, jstring locale) {
363        Paint* obj = reinterpret_cast<Paint*>(objHandle);
364        ScopedUtfChars localeChars(env, locale);
365        char langTag[ULOC_FULLNAME_CAPACITY];
366        toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, localeChars.c_str());
367
368        obj->setTextLocale(langTag);
369    }
370
371    static jboolean isElegantTextHeight(JNIEnv* env, jobject paint) {
372        NPE_CHECK_RETURN_ZERO(env, paint);
373        Paint* obj = GraphicsJNI::getNativePaint(env, paint);
374        return obj->getFontVariant() == VARIANT_ELEGANT;
375    }
376
377    static void setElegantTextHeight(JNIEnv* env, jobject paint, jboolean aa) {
378        NPE_CHECK_RETURN_VOID(env, paint);
379        Paint* obj = GraphicsJNI::getNativePaint(env, paint);
380        obj->setFontVariant(aa ? VARIANT_ELEGANT : VARIANT_DEFAULT);
381    }
382
383    static jfloat getTextSize(JNIEnv* env, jobject paint) {
384        NPE_CHECK_RETURN_ZERO(env, paint);
385        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSize());
386    }
387
388    static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) {
389        NPE_CHECK_RETURN_VOID(env, paint);
390        GraphicsJNI::getNativePaint(env, paint)->setTextSize(textSize);
391    }
392
393    static jfloat getTextScaleX(JNIEnv* env, jobject paint) {
394        NPE_CHECK_RETURN_ZERO(env, paint);
395        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextScaleX());
396    }
397
398    static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) {
399        NPE_CHECK_RETURN_VOID(env, paint);
400        GraphicsJNI::getNativePaint(env, paint)->setTextScaleX(scaleX);
401    }
402
403    static jfloat getTextSkewX(JNIEnv* env, jobject paint) {
404        NPE_CHECK_RETURN_ZERO(env, paint);
405        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSkewX());
406    }
407
408    static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) {
409        NPE_CHECK_RETURN_VOID(env, paint);
410        GraphicsJNI::getNativePaint(env, paint)->setTextSkewX(skewX);
411    }
412
413    static jfloat getLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle) {
414        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
415        return paint->getLetterSpacing();
416    }
417
418    static void setLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat letterSpacing) {
419        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
420        paint->setLetterSpacing(letterSpacing);
421    }
422
423    static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) {
424        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
425        if (!settings) {
426            paint->setFontFeatureSettings(std::string());
427        } else {
428            ScopedUtfChars settingsChars(env, settings);
429            paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size()));
430        }
431    }
432
433    static SkScalar getMetricsInternal(JNIEnv* env, jobject jpaint, Paint::FontMetrics *metrics) {
434        const int kElegantTop = 2500;
435        const int kElegantBottom = -1000;
436        const int kElegantAscent = 1900;
437        const int kElegantDescent = -500;
438        const int kElegantLeading = 0;
439        Paint* paint = GraphicsJNI::getNativePaint(env, jpaint);
440        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
441        typeface = TypefaceImpl_resolveDefault(typeface);
442        FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle);
443        float saveSkewX = paint->getTextSkewX();
444        bool savefakeBold = paint->isFakeBoldText();
445        MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery);
446        SkScalar spacing = paint->getFontMetrics(metrics);
447        // The populateSkPaint call may have changed fake bold / text skew
448        // because we want to measure with those effects applied, so now
449        // restore the original settings.
450        paint->setTextSkewX(saveSkewX);
451        paint->setFakeBoldText(savefakeBold);
452        if (paint->getFontVariant() == VARIANT_ELEGANT) {
453            SkScalar size = paint->getTextSize();
454            metrics->fTop = -size * kElegantTop / 2048;
455            metrics->fBottom = -size * kElegantBottom / 2048;
456            metrics->fAscent = -size * kElegantAscent / 2048;
457            metrics->fDescent = -size * kElegantDescent / 2048;
458            metrics->fLeading = size * kElegantLeading / 2048;
459            spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
460        }
461        return spacing;
462    }
463
464    static jfloat ascent(JNIEnv* env, jobject paint) {
465        NPE_CHECK_RETURN_ZERO(env, paint);
466        Paint::FontMetrics metrics;
467        getMetricsInternal(env, paint, &metrics);
468        return SkScalarToFloat(metrics.fAscent);
469    }
470
471    static jfloat descent(JNIEnv* env, jobject paint) {
472        NPE_CHECK_RETURN_ZERO(env, paint);
473        Paint::FontMetrics metrics;
474        getMetricsInternal(env, paint, &metrics);
475        return SkScalarToFloat(metrics.fDescent);
476    }
477
478    static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) {
479        NPE_CHECK_RETURN_ZERO(env, paint);
480        Paint::FontMetrics metrics;
481        SkScalar spacing = getMetricsInternal(env, paint, &metrics);
482
483        if (metricsObj) {
484            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
485            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
486            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
487            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
488            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
489            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
490        }
491        return SkScalarToFloat(spacing);
492    }
493
494    static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) {
495        NPE_CHECK_RETURN_ZERO(env, paint);
496        Paint::FontMetrics metrics;
497
498        getMetricsInternal(env, paint, &metrics);
499        int ascent = SkScalarRoundToInt(metrics.fAscent);
500        int descent = SkScalarRoundToInt(metrics.fDescent);
501        int leading = SkScalarRoundToInt(metrics.fLeading);
502
503        if (metricsObj) {
504            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
505            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
506            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
507            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
508            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
509            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
510        }
511        return descent - ascent + leading;
512    }
513
514    static jfloat measureText_CIII(JNIEnv* env, jobject jpaint, jcharArray text, jint index, jint count,
515            jint bidiFlags) {
516        NPE_CHECK_RETURN_ZERO(env, jpaint);
517        NPE_CHECK_RETURN_ZERO(env, text);
518
519        size_t textLength = env->GetArrayLength(text);
520        if ((index | count) < 0 || (size_t)(index + count) > textLength) {
521            doThrowAIOOBE(env);
522            return 0;
523        }
524        if (count == 0) {
525            return 0;
526        }
527
528        Paint* paint = GraphicsJNI::getNativePaint(env, jpaint);
529        const jchar* textArray = env->GetCharArrayElements(text, NULL);
530        jfloat result = 0;
531
532        Layout layout;
533        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
534        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray, index, count, textLength);
535        result = layout.getAdvance();
536        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
537        return result;
538    }
539
540    static jfloat measureText_StringIII(JNIEnv* env, jobject jpaint, jstring text, jint start, jint end,
541            jint bidiFlags) {
542        NPE_CHECK_RETURN_ZERO(env, jpaint);
543        NPE_CHECK_RETURN_ZERO(env, text);
544
545        size_t textLength = env->GetStringLength(text);
546        int count = end - start;
547        if ((start | count) < 0 || (size_t)end > textLength) {
548            doThrowAIOOBE(env);
549            return 0;
550        }
551        if (count == 0) {
552            return 0;
553        }
554
555        const jchar* textArray = env->GetStringChars(text, NULL);
556        Paint* paint = GraphicsJNI::getNativePaint(env, jpaint);
557        jfloat width = 0;
558
559        Layout layout;
560        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
561        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray, start, count, textLength);
562        width = layout.getAdvance();
563
564        env->ReleaseStringChars(text, textArray);
565        return width;
566    }
567
568    static jfloat measureText_StringI(JNIEnv* env, jobject jpaint, jstring text, jint bidiFlags) {
569        NPE_CHECK_RETURN_ZERO(env, jpaint);
570        NPE_CHECK_RETURN_ZERO(env, text);
571
572        size_t textLength = env->GetStringLength(text);
573        if (textLength == 0) {
574            return 0;
575        }
576
577        const jchar* textArray = env->GetStringChars(text, NULL);
578        Paint* paint = GraphicsJNI::getNativePaint(env, jpaint);
579        jfloat width = 0;
580
581        Layout layout;
582        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
583        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray, 0, textLength, textLength);
584        width = layout.getAdvance();
585
586        env->ReleaseStringChars(text, textArray);
587        return width;
588    }
589
590    static int dotextwidths(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar text[], int count,
591            jfloatArray widths, jint bidiFlags) {
592        NPE_CHECK_RETURN_ZERO(env, paint);
593        NPE_CHECK_RETURN_ZERO(env, text);
594
595        if (count < 0 || !widths) {
596            doThrowAIOOBE(env);
597            return 0;
598        }
599        if (count == 0) {
600            return 0;
601        }
602        size_t widthsLength = env->GetArrayLength(widths);
603        if ((size_t)count > widthsLength) {
604            doThrowAIOOBE(env);
605            return 0;
606        }
607
608        AutoJavaFloatArray autoWidths(env, widths, count);
609        jfloat* widthsArray = autoWidths.ptr();
610
611        Layout layout;
612        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count);
613        layout.getAdvances(widthsArray);
614
615        return count;
616    }
617
618    static jint getTextWidths___CIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray text,
619            jint index, jint count, jint bidiFlags, jfloatArray widths) {
620        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
621        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
622        const jchar* textArray = env->GetCharArrayElements(text, NULL);
623        count = dotextwidths(env, paint, typeface, textArray + index, count, widths, bidiFlags);
624        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
625                                      JNI_ABORT);
626        return count;
627    }
628
629    static jint getTextWidths__StringIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring text,
630            jint start, jint end, jint bidiFlags, jfloatArray widths) {
631        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
632        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
633        const jchar* textArray = env->GetStringChars(text, NULL);
634        int count = dotextwidths(env, paint, typeface, textArray + start, end - start, widths, bidiFlags);
635        env->ReleaseStringChars(text, textArray);
636        return count;
637    }
638
639    static jfloat doTextRunAdvances(JNIEnv *env, Paint *paint, TypefaceImpl* typeface, const jchar *text,
640                                    jint start, jint count, jint contextCount, jboolean isRtl,
641                                    jfloatArray advances, jint advancesIndex) {
642        NPE_CHECK_RETURN_ZERO(env, paint);
643        NPE_CHECK_RETURN_ZERO(env, text);
644
645        if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
646            doThrowAIOOBE(env);
647            return 0;
648        }
649        if (count == 0) {
650            return 0;
651        }
652        if (advances) {
653            size_t advancesLength = env->GetArrayLength(advances);
654            if ((size_t)count > advancesLength) {
655                doThrowAIOOBE(env);
656                return 0;
657            }
658        }
659        jfloat* advancesArray = new jfloat[count];
660        jfloat totalAdvance = 0;
661
662        int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
663
664        Layout layout;
665        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, start, count, contextCount);
666        layout.getAdvances(advancesArray);
667        totalAdvance = layout.getAdvance();
668
669        if (advances != NULL) {
670            env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray);
671        }
672        delete [] advancesArray;
673        return totalAdvance;
674    }
675
676    static jfloat getTextRunAdvances___CIIIIZ_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
677            jlong typefaceHandle,
678            jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
679            jboolean isRtl, jfloatArray advances, jint advancesIndex) {
680        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
681        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
682        jchar* textArray = env->GetCharArrayElements(text, NULL);
683        jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextIndex,
684                index - contextIndex, count, contextCount, isRtl, advances, advancesIndex);
685        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
686        return result;
687    }
688
689    static jfloat getTextRunAdvances__StringIIIIZ_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
690            jlong typefaceHandle,
691            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jboolean isRtl,
692            jfloatArray advances, jint advancesIndex) {
693        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
694        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
695        const jchar* textArray = env->GetStringChars(text, NULL);
696        jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextStart,
697                start - contextStart, end - start, contextEnd - contextStart, isRtl,
698                advances, advancesIndex);
699        env->ReleaseStringChars(text, textArray);
700        return result;
701    }
702
703    static jint doTextRunCursor(JNIEnv *env, Paint* paint, const jchar *text, jint start,
704            jint count, jint flags, jint offset, jint opt) {
705        GraphemeBreak::MoveOpt moveOpt = GraphemeBreak::MoveOpt(opt);
706        size_t result = GraphemeBreak::getTextRunCursor(text, start, count, offset, moveOpt);
707        return static_cast<jint>(result);
708    }
709
710    static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
711            jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) {
712        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
713        jchar* textArray = env->GetCharArrayElements(text, NULL);
714        jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, dir,
715                offset, cursorOpt);
716        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
717        return result;
718    }
719
720    static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text,
721            jint contextStart, jint contextEnd, jint dir, jint offset, jint cursorOpt) {
722        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
723        const jchar* textArray = env->GetStringChars(text, NULL);
724        jint result = doTextRunCursor(env, paint, textArray, contextStart,
725                contextEnd - contextStart, dir, offset, cursorOpt);
726        env->ReleaseStringChars(text, textArray);
727        return result;
728    }
729
730    class GetTextFunctor {
731    public:
732        GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, Paint* paint,
733                    uint16_t* glyphs, SkPoint* pos)
734                : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
735        }
736
737        void operator()(size_t start, size_t end) {
738            for (size_t i = start; i < end; i++) {
739                glyphs[i] = layout.getGlyphId(i);
740                pos[i].fX = x + layout.getX(i);
741                pos[i].fY = y + layout.getY(i);
742            }
743            if (start == 0) {
744                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
745            } else {
746                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
747                path->addPath(tmpPath);
748            }
749        }
750    private:
751        const Layout& layout;
752        SkPath* path;
753        jfloat x;
754        jfloat y;
755        Paint* paint;
756        uint16_t* glyphs;
757        SkPoint* pos;
758        SkPath tmpPath;
759    };
760
761    static void getTextPath(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar* text,
762            jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
763        Layout layout;
764        MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count);
765        size_t nGlyphs = layout.nGlyphs();
766        uint16_t* glyphs = new uint16_t[nGlyphs];
767        SkPoint* pos = new SkPoint[nGlyphs];
768
769        x += MinikinUtils::xOffsetForTextAlign(paint, layout);
770        Paint::Align align = paint->getTextAlign();
771        paint->setTextAlign(Paint::kLeft_Align);
772        paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
773        GetTextFunctor f(layout, path, x, y, paint, glyphs, pos);
774        MinikinUtils::forFontRun(layout, paint, f);
775        paint->setTextAlign(align);
776        delete[] glyphs;
777        delete[] pos;
778    }
779
780    static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle,
781            jlong typefaceHandle, jint bidiFlags,
782            jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
783        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
784        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
785        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
786        const jchar* textArray = env->GetCharArrayElements(text, NULL);
787        getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
788        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
789    }
790
791    static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle,
792            jlong typefaceHandle, jint bidiFlags,
793            jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
794        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
795        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
796        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
797        const jchar* textArray = env->GetStringChars(text, NULL);
798        getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
799        env->ReleaseStringChars(text, textArray);
800    }
801
802    static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius,
803                               jfloat dx, jfloat dy, jint color) {
804        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
805        if (radius <= 0) {
806            paint->setLooper(NULL);
807        }
808        else {
809            SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
810            paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref();
811        }
812    }
813
814    static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) {
815        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
816        return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL);
817    }
818
819    static int breakText(JNIEnv* env, const Paint& paint, TypefaceImpl* typeface, const jchar text[],
820                         int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
821                         Paint::TextBufferDirection textBufferDirection) {
822        size_t measuredCount = 0;
823        float measured = 0;
824
825        Layout layout;
826        MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
827        float* advances = new float[count];
828        layout.getAdvances(advances);
829        const bool forwardScan = (textBufferDirection == Paint::kForward_TextBufferDirection);
830        for (int i = 0; i < count; i++) {
831            // traverse in the given direction
832            int index = forwardScan ? i : (count - i - 1);
833            float width = advances[index];
834            if (measured + width > maxWidth) {
835                break;
836            }
837            // properly handle clusters when scanning backwards
838            if (forwardScan || width != 0.0f) {
839                measuredCount = i + 1;
840            }
841            measured += width;
842        }
843        delete[] advances;
844
845        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
846            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
847            jfloat* array = autoMeasured.ptr();
848            array[0] = measured;
849        }
850        return measuredCount;
851    }
852
853    static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray jtext,
854            jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
855        NPE_CHECK_RETURN_ZERO(env, jtext);
856
857        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
858        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
859
860        Paint::TextBufferDirection tbd;
861        if (count < 0) {
862            tbd = Paint::kBackward_TextBufferDirection;
863            count = -count;
864        }
865        else {
866            tbd = Paint::kForward_TextBufferDirection;
867        }
868
869        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
870            doThrowAIOOBE(env);
871            return 0;
872        }
873
874        const jchar* text = env->GetCharArrayElements(jtext, NULL);
875        count = breakText(env, *paint, typeface, text + index, count, maxWidth,
876                          bidiFlags, jmeasuredWidth, tbd);
877        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
878                                      JNI_ABORT);
879        return count;
880    }
881
882    static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext,
883                jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
884        NPE_CHECK_RETURN_ZERO(env, jtext);
885
886        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
887        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
888
889        Paint::TextBufferDirection tbd = forwards ?
890                                        Paint::kForward_TextBufferDirection :
891                                        Paint::kBackward_TextBufferDirection;
892
893        int count = env->GetStringLength(jtext);
894        const jchar* text = env->GetStringChars(jtext, NULL);
895        count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, tbd);
896        env->ReleaseStringChars(jtext, text);
897        return count;
898    }
899
900    static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
901            const Paint& paint, TypefaceImpl* typeface, jint bidiFlags) {
902        SkRect  r;
903        SkIRect ir;
904
905        Layout layout;
906        MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
907        MinikinRect rect;
908        layout.getBounds(&rect);
909        r.fLeft = rect.mLeft;
910        r.fTop = rect.mTop;
911        r.fRight = rect.mRight;
912        r.fBottom = rect.mBottom;
913        r.roundOut(&ir);
914        GraphicsJNI::irect_to_jrect(ir, env, bounds);
915    }
916
917    static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
918                                jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
919        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);;
920        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
921        const jchar* textArray = env->GetStringChars(text, NULL);
922        doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
923        env->ReleaseStringChars(text, textArray);
924    }
925
926    static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
927                        jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
928        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
929        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
930        const jchar* textArray = env->GetCharArrayElements(text, NULL);
931        doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
932        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
933                                      JNI_ABORT);
934    }
935
936};
937
938static const JNINativeMethod methods[] = {
939    {"finalizer", "(J)V", (void*) PaintGlue::finalizer},
940    {"native_init","()J", (void*) PaintGlue::init},
941    {"native_initWithPaint","(J)J", (void*) PaintGlue::initWithPaint},
942
943    {"native_reset","!(J)V", (void*) PaintGlue::reset},
944    {"native_set","!(JJ)V", (void*) PaintGlue::assign},
945    {"getFlags","!()I", (void*) PaintGlue::getFlags},
946    {"setFlags","!(I)V", (void*) PaintGlue::setFlags},
947    {"getHinting","!()I", (void*) PaintGlue::getHinting},
948    {"setHinting","!(I)V", (void*) PaintGlue::setHinting},
949    {"setAntiAlias","!(Z)V", (void*) PaintGlue::setAntiAlias},
950    {"setSubpixelText","!(Z)V", (void*) PaintGlue::setSubpixelText},
951    {"setLinearText","!(Z)V", (void*) PaintGlue::setLinearText},
952    {"setUnderlineText","!(Z)V", (void*) PaintGlue::setUnderlineText},
953    {"setStrikeThruText","!(Z)V", (void*) PaintGlue::setStrikeThruText},
954    {"setFakeBoldText","!(Z)V", (void*) PaintGlue::setFakeBoldText},
955    {"setFilterBitmap","!(Z)V", (void*) PaintGlue::setFilterBitmap},
956    {"setDither","!(Z)V", (void*) PaintGlue::setDither},
957    {"native_getStyle","!(J)I", (void*) PaintGlue::getStyle},
958    {"native_setStyle","!(JI)V", (void*) PaintGlue::setStyle},
959    {"getColor","!()I", (void*) PaintGlue::getColor},
960    {"setColor","!(I)V", (void*) PaintGlue::setColor},
961    {"getAlpha","!()I", (void*) PaintGlue::getAlpha},
962    {"setAlpha","!(I)V", (void*) PaintGlue::setAlpha},
963    {"getStrokeWidth","!()F", (void*) PaintGlue::getStrokeWidth},
964    {"setStrokeWidth","!(F)V", (void*) PaintGlue::setStrokeWidth},
965    {"getStrokeMiter","!()F", (void*) PaintGlue::getStrokeMiter},
966    {"setStrokeMiter","!(F)V", (void*) PaintGlue::setStrokeMiter},
967    {"native_getStrokeCap","!(J)I", (void*) PaintGlue::getStrokeCap},
968    {"native_setStrokeCap","!(JI)V", (void*) PaintGlue::setStrokeCap},
969    {"native_getStrokeJoin","!(J)I", (void*) PaintGlue::getStrokeJoin},
970    {"native_setStrokeJoin","!(JI)V", (void*) PaintGlue::setStrokeJoin},
971    {"native_getFillPath","!(JJJ)Z", (void*) PaintGlue::getFillPath},
972    {"native_setShader","!(JJ)J", (void*) PaintGlue::setShader},
973    {"native_setColorFilter","!(JJ)J", (void*) PaintGlue::setColorFilter},
974    {"native_setXfermode","!(JJ)J", (void*) PaintGlue::setXfermode},
975    {"native_setPathEffect","!(JJ)J", (void*) PaintGlue::setPathEffect},
976    {"native_setMaskFilter","!(JJ)J", (void*) PaintGlue::setMaskFilter},
977    {"native_setTypeface","!(JJ)J", (void*) PaintGlue::setTypeface},
978    {"native_setRasterizer","!(JJ)J", (void*) PaintGlue::setRasterizer},
979    {"native_getTextAlign","!(J)I", (void*) PaintGlue::getTextAlign},
980    {"native_setTextAlign","!(JI)V", (void*) PaintGlue::setTextAlign},
981    {"native_setTextLocale","!(JLjava/lang/String;)V", (void*) PaintGlue::setTextLocale},
982    {"isElegantTextHeight","!()Z", (void*) PaintGlue::isElegantTextHeight},
983    {"setElegantTextHeight","!(Z)V", (void*) PaintGlue::setElegantTextHeight},
984    {"getTextSize","!()F", (void*) PaintGlue::getTextSize},
985    {"setTextSize","!(F)V", (void*) PaintGlue::setTextSize},
986    {"getTextScaleX","!()F", (void*) PaintGlue::getTextScaleX},
987    {"setTextScaleX","!(F)V", (void*) PaintGlue::setTextScaleX},
988    {"getTextSkewX","!()F", (void*) PaintGlue::getTextSkewX},
989    {"setTextSkewX","!(F)V", (void*) PaintGlue::setTextSkewX},
990    {"native_getLetterSpacing","!(J)F", (void*) PaintGlue::getLetterSpacing},
991    {"native_setLetterSpacing","!(JF)V", (void*) PaintGlue::setLetterSpacing},
992    {"native_setFontFeatureSettings","(JLjava/lang/String;)V", (void*) PaintGlue::setFontFeatureSettings},
993    {"ascent","!()F", (void*) PaintGlue::ascent},
994    {"descent","!()F", (void*) PaintGlue::descent},
995
996    {"getFontMetrics", "(Landroid/graphics/Paint$FontMetrics;)F", (void*)PaintGlue::getFontMetrics},
997    {"getFontMetricsInt", "(Landroid/graphics/Paint$FontMetricsInt;)I", (void*)PaintGlue::getFontMetricsInt},
998    {"native_measureText","([CIII)F", (void*) PaintGlue::measureText_CIII},
999    {"native_measureText","(Ljava/lang/String;I)F", (void*) PaintGlue::measureText_StringI},
1000    {"native_measureText","(Ljava/lang/String;III)F", (void*) PaintGlue::measureText_StringIII},
1001    {"native_breakText","(JJ[CIIFI[F)I", (void*) PaintGlue::breakTextC},
1002    {"native_breakText","(JJLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS},
1003    {"native_getTextWidths","(JJ[CIII[F)I", (void*) PaintGlue::getTextWidths___CIII_F},
1004    {"native_getTextWidths","(JJLjava/lang/String;III[F)I", (void*) PaintGlue::getTextWidths__StringIII_F},
1005    {"native_getTextRunAdvances","(JJ[CIIIIZ[FI)F",
1006        (void*) PaintGlue::getTextRunAdvances___CIIIIZ_FI},
1007    {"native_getTextRunAdvances","(JJLjava/lang/String;IIIIZ[FI)F",
1008        (void*) PaintGlue::getTextRunAdvances__StringIIIIZ_FI},
1009
1010    {"native_getTextRunCursor", "(J[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C},
1011    {"native_getTextRunCursor", "(JLjava/lang/String;IIIII)I",
1012        (void*) PaintGlue::getTextRunCursor__String},
1013    {"native_getTextPath","(JJI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C},
1014    {"native_getTextPath","(JJILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String},
1015    {"nativeGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V",
1016                                        (void*) PaintGlue::getStringBounds },
1017    {"nativeGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V",
1018                                    (void*) PaintGlue::getCharArrayBounds },
1019
1020    {"native_setShadowLayer", "!(JFFFI)V", (void*)PaintGlue::setShadowLayer},
1021    {"native_hasShadowLayer", "!(J)Z", (void*)PaintGlue::hasShadowLayer}
1022};
1023
1024int register_android_graphics_Paint(JNIEnv* env) {
1025    gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics");
1026    gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class);
1027
1028    gFontMetrics_fieldID.top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F");
1029    gFontMetrics_fieldID.ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F");
1030    gFontMetrics_fieldID.descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F");
1031    gFontMetrics_fieldID.bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F");
1032    gFontMetrics_fieldID.leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F");
1033
1034    gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt");
1035    gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class);
1036
1037    gFontMetricsInt_fieldID.top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I");
1038    gFontMetricsInt_fieldID.ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I");
1039    gFontMetricsInt_fieldID.descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I");
1040    gFontMetricsInt_fieldID.bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I");
1041    gFontMetricsInt_fieldID.leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I");
1042
1043    return RegisterMethodsOrDie(env, "android/graphics/Paint", methods, NELEM(methods));
1044}
1045
1046}
1047