Paint.cpp revision 817ef4ae79bd39b5e55fc6ca4e3b8e47e114579f 
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 <android_runtime/AndroidRuntime.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#include "TextLayout.h"
38
39#ifdef USE_MINIKIN
40#include <minikin/Layout.h>
41#include "MinikinSkia.h"
42#include "MinikinUtils.h"
43#endif
44
45// temporary for debugging
46#include <Caches.h>
47#include <utils/Log.h>
48
49namespace android {
50
51struct JMetricsID {
52    jfieldID    top;
53    jfieldID    ascent;
54    jfieldID    descent;
55    jfieldID    bottom;
56    jfieldID    leading;
57};
58
59static jclass   gFontMetrics_class;
60static JMetricsID gFontMetrics_fieldID;
61
62static jclass   gFontMetricsInt_class;
63static JMetricsID gFontMetricsInt_fieldID;
64
65static void defaultSettingsForAndroid(SkPaint* paint) {
66    // GlyphID encoding is required because we are using Harfbuzz shaping
67    paint->setTextEncoding(SkPaint::kGlyphID_TextEncoding);
68
69    SkPaintOptionsAndroid paintOpts = paint->getPaintOptionsAndroid();
70    paintOpts.setUseFontFallbacks(true);
71    paint->setPaintOptionsAndroid(paintOpts);
72}
73
74class SkPaintGlue {
75public:
76    enum MoveOpt {
77        AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
78    };
79
80    static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
81        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
82        delete obj;
83    }
84
85    static jlong init(JNIEnv* env, jobject clazz) {
86        SkPaint* obj = new SkPaint();
87        defaultSettingsForAndroid(obj);
88        return reinterpret_cast<jlong>(obj);
89    }
90
91    static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
92        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
93        SkPaint* obj = new SkPaint(*paint);
94        return reinterpret_cast<jlong>(obj);
95    }
96
97    static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
98        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
99        obj->reset();
100        defaultSettingsForAndroid(obj);
101    }
102
103    static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) {
104        SkPaint* dst = reinterpret_cast<SkPaint*>(dstPaintHandle);
105        const SkPaint* src = reinterpret_cast<SkPaint*>(srcPaintHandle);
106        *dst = *src;
107    }
108
109    // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
110    static const uint32_t sFilterBitmapFlag = 0x02;
111
112    static jint getFlags(JNIEnv* env, jobject paint) {
113        NPE_CHECK_RETURN_ZERO(env, paint);
114        SkPaint* nativePaint = GraphicsJNI::getNativePaint(env, paint);
115        uint32_t result = nativePaint->getFlags();
116        result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away.
117        if (nativePaint->getFilterLevel() != SkPaint::kNone_FilterLevel) {
118            result |= sFilterBitmapFlag;
119        }
120        return static_cast<jint>(result);
121    }
122
123    static void setFlags(JNIEnv* env, jobject paint, jint flags) {
124        NPE_CHECK_RETURN_VOID(env, paint);
125        SkPaint* nativePaint = GraphicsJNI::getNativePaint(env, paint);
126        // Instead of modifying 0x02, change the filter level.
127        nativePaint->setFilterLevel(flags & sFilterBitmapFlag
128                ? SkPaint::kLow_FilterLevel
129                : SkPaint::kNone_FilterLevel);
130        // Don't pass through filter flag, which is no longer stored in paint's flags.
131        flags &= ~sFilterBitmapFlag;
132        // Use the existing value for 0x02.
133        const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag;
134        flags |= existing0x02Flag;
135        nativePaint->setFlags(flags);
136    }
137
138    static jint getHinting(JNIEnv* env, jobject paint) {
139        NPE_CHECK_RETURN_ZERO(env, paint);
140        return GraphicsJNI::getNativePaint(env, paint)->getHinting()
141                == SkPaint::kNo_Hinting ? 0 : 1;
142    }
143
144    static void setHinting(JNIEnv* env, jobject paint, jint mode) {
145        NPE_CHECK_RETURN_VOID(env, paint);
146        GraphicsJNI::getNativePaint(env, paint)->setHinting(
147                mode == 0 ? SkPaint::kNo_Hinting : SkPaint::kNormal_Hinting);
148    }
149
150    static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) {
151        NPE_CHECK_RETURN_VOID(env, paint);
152        GraphicsJNI::getNativePaint(env, paint)->setAntiAlias(aa);
153    }
154
155    static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) {
156        NPE_CHECK_RETURN_VOID(env, paint);
157        GraphicsJNI::getNativePaint(env, paint)->setLinearText(linearText);
158    }
159
160    static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) {
161        NPE_CHECK_RETURN_VOID(env, paint);
162        GraphicsJNI::getNativePaint(env, paint)->setSubpixelText(subpixelText);
163    }
164
165    static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) {
166        NPE_CHECK_RETURN_VOID(env, paint);
167        GraphicsJNI::getNativePaint(env, paint)->setUnderlineText(underlineText);
168    }
169
170    static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) {
171        NPE_CHECK_RETURN_VOID(env, paint);
172        GraphicsJNI::getNativePaint(env, paint)->setStrikeThruText(strikeThruText);
173    }
174
175    static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) {
176        NPE_CHECK_RETURN_VOID(env, paint);
177        GraphicsJNI::getNativePaint(env, paint)->setFakeBoldText(fakeBoldText);
178    }
179
180    static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) {
181        NPE_CHECK_RETURN_VOID(env, paint);
182        GraphicsJNI::getNativePaint(env, paint)->setFilterLevel(
183                filterBitmap ? SkPaint::kLow_FilterLevel : SkPaint::kNone_FilterLevel);
184    }
185
186    static void setDither(JNIEnv* env, jobject paint, jboolean dither) {
187        NPE_CHECK_RETURN_VOID(env, paint);
188        GraphicsJNI::getNativePaint(env, paint)->setDither(dither);
189    }
190
191    static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) {
192        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
193        return static_cast<jint>(obj->getStyle());
194    }
195
196    static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) {
197        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
198        SkPaint::Style style = static_cast<SkPaint::Style>(styleHandle);
199        obj->setStyle(style);
200    }
201
202    static jint getColor(JNIEnv* env, jobject paint) {
203        NPE_CHECK_RETURN_ZERO(env, paint);
204        int color;
205        color = GraphicsJNI::getNativePaint(env, paint)->getColor();
206        return static_cast<jint>(color);
207    }
208
209    static jint getAlpha(JNIEnv* env, jobject paint) {
210        NPE_CHECK_RETURN_ZERO(env, paint);
211        int alpha;
212        alpha = GraphicsJNI::getNativePaint(env, paint)->getAlpha();
213        return static_cast<jint>(alpha);
214    }
215
216    static void setColor(JNIEnv* env, jobject paint, jint color) {
217        NPE_CHECK_RETURN_VOID(env, paint);
218        GraphicsJNI::getNativePaint(env, paint)->setColor(color);
219    }
220
221    static void setAlpha(JNIEnv* env, jobject paint, jint a) {
222        NPE_CHECK_RETURN_VOID(env, paint);
223        GraphicsJNI::getNativePaint(env, paint)->setAlpha(a);
224    }
225
226    static jfloat getStrokeWidth(JNIEnv* env, jobject paint) {
227        NPE_CHECK_RETURN_ZERO(env, paint);
228        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeWidth());
229    }
230
231    static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) {
232        NPE_CHECK_RETURN_VOID(env, paint);
233        GraphicsJNI::getNativePaint(env, paint)->setStrokeWidth(width);
234    }
235
236    static jfloat getStrokeMiter(JNIEnv* env, jobject paint) {
237        NPE_CHECK_RETURN_ZERO(env, paint);
238        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeMiter());
239    }
240
241    static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) {
242        NPE_CHECK_RETURN_VOID(env, paint);
243        GraphicsJNI::getNativePaint(env, paint)->setStrokeMiter(miter);
244    }
245
246    static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) {
247        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
248        return static_cast<jint>(obj->getStrokeCap());
249    }
250
251    static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) {
252        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
253        SkPaint::Cap cap = static_cast<SkPaint::Cap>(capHandle);
254        obj->setStrokeCap(cap);
255    }
256
257    static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) {
258        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
259        return static_cast<jint>(obj->getStrokeJoin());
260    }
261
262    static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) {
263        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
264        SkPaint::Join join = (SkPaint::Join) joinHandle;
265        obj->setStrokeJoin(join);
266    }
267
268    static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) {
269        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
270        SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
271        SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
272        return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
273    }
274
275    static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) {
276        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
277        SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
278        return reinterpret_cast<jlong>(obj->setShader(shader));
279    }
280
281    static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) {
282        SkPaint* obj = reinterpret_cast<SkPaint *>(objHandle);
283        SkColorFilter* filter  = reinterpret_cast<SkColorFilter *>(filterHandle);
284        return reinterpret_cast<jlong>(obj->setColorFilter(filter));
285    }
286
287    static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) {
288        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
289        SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle);
290        return reinterpret_cast<jlong>(obj->setXfermode(xfermode));
291    }
292
293    static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) {
294        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
295        SkPathEffect* effect  = reinterpret_cast<SkPathEffect*>(effectHandle);
296        return reinterpret_cast<jlong>(obj->setPathEffect(effect));
297    }
298
299    static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) {
300        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
301        SkMaskFilter* maskfilter  = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
302        return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter));
303    }
304
305    static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) {
306#ifndef USE_MINIKIN
307        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
308        SkTypeface* typeface = reinterpret_cast<SkTypeface*>(typefaceHandle);
309        return reinterpret_cast<jlong>(obj->setTypeface(typeface));
310#else
311        // TODO(raph): not yet implemented
312        return NULL;
313#endif
314    }
315
316    static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) {
317        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
318        SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle));
319        return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer));
320    }
321
322    static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) {
323        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
324        return static_cast<jint>(obj->getTextAlign());
325    }
326
327    static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) {
328        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
329        SkPaint::Align align = static_cast<SkPaint::Align>(alignHandle);
330        obj->setTextAlign(align);
331    }
332
333    // generate bcp47 identifier for the supplied locale
334    static void toLanguageTag(char* output, size_t outSize,
335            const char* locale) {
336        if (output == NULL || outSize <= 0) {
337            return;
338        }
339        if (locale == NULL) {
340            output[0] = '\0';
341            return;
342        }
343        char canonicalChars[ULOC_FULLNAME_CAPACITY];
344        UErrorCode uErr = U_ZERO_ERROR;
345        uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY,
346                &uErr);
347        if (U_SUCCESS(uErr)) {
348            char likelyChars[ULOC_FULLNAME_CAPACITY];
349            uErr = U_ZERO_ERROR;
350            uloc_addLikelySubtags(canonicalChars, likelyChars,
351                    ULOC_FULLNAME_CAPACITY, &uErr);
352            if (U_SUCCESS(uErr)) {
353                uErr = U_ZERO_ERROR;
354                uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr);
355                if (U_SUCCESS(uErr)) {
356                    return;
357                } else {
358                    ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars,
359                            u_errorName(uErr));
360                }
361            } else {
362                ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s",
363                        canonicalChars, u_errorName(uErr));
364            }
365        } else {
366            ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale,
367                    u_errorName(uErr));
368        }
369        // unable to build a proper language identifier
370        output[0] = '\0';
371    }
372
373    static void setTextLocale(JNIEnv* env, jobject clazz, jlong objHandle, jstring locale) {
374        SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle);
375        ScopedUtfChars localeChars(env, locale);
376        char langTag[ULOC_FULLNAME_CAPACITY];
377        toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, localeChars.c_str());
378
379        SkPaintOptionsAndroid paintOpts = obj->getPaintOptionsAndroid();
380        paintOpts.setLanguage(langTag);
381        obj->setPaintOptionsAndroid(paintOpts);
382    }
383
384    static jboolean isElegantTextHeight(JNIEnv* env, jobject paint) {
385        NPE_CHECK_RETURN_ZERO(env, paint);
386        SkPaint* obj = GraphicsJNI::getNativePaint(env, paint);
387        SkPaintOptionsAndroid paintOpts = obj->getPaintOptionsAndroid();
388        return paintOpts.getFontVariant() == SkPaintOptionsAndroid::kElegant_Variant;
389    }
390
391    static void setElegantTextHeight(JNIEnv* env, jobject paint, jboolean aa) {
392        NPE_CHECK_RETURN_VOID(env, paint);
393        SkPaint* obj = GraphicsJNI::getNativePaint(env, paint);
394        SkPaintOptionsAndroid::FontVariant variant =
395            aa ? SkPaintOptionsAndroid::kElegant_Variant :
396            SkPaintOptionsAndroid::kDefault_Variant;
397        SkPaintOptionsAndroid paintOpts = obj->getPaintOptionsAndroid();
398        paintOpts.setFontVariant(variant);
399        obj->setPaintOptionsAndroid(paintOpts);
400    }
401
402    static jfloat getTextSize(JNIEnv* env, jobject paint) {
403        NPE_CHECK_RETURN_ZERO(env, paint);
404        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSize());
405    }
406
407    static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) {
408        NPE_CHECK_RETURN_VOID(env, paint);
409        GraphicsJNI::getNativePaint(env, paint)->setTextSize(textSize);
410    }
411
412    static jfloat getTextScaleX(JNIEnv* env, jobject paint) {
413        NPE_CHECK_RETURN_ZERO(env, paint);
414        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextScaleX());
415    }
416
417    static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) {
418        NPE_CHECK_RETURN_VOID(env, paint);
419        GraphicsJNI::getNativePaint(env, paint)->setTextScaleX(scaleX);
420    }
421
422    static jfloat getTextSkewX(JNIEnv* env, jobject paint) {
423        NPE_CHECK_RETURN_ZERO(env, paint);
424        return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSkewX());
425    }
426
427    static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) {
428        NPE_CHECK_RETURN_VOID(env, paint);
429        GraphicsJNI::getNativePaint(env, paint)->setTextSkewX(skewX);
430    }
431
432    static SkScalar getMetricsInternal(JNIEnv* env, jobject jpaint, SkPaint::FontMetrics *metrics) {
433        const int kElegantTop = 2500;
434        const int kElegantBottom = -1000;
435        const int kElegantAscent = 1900;
436        const int kElegantDescent = -500;
437        const int kElegantLeading = 0;
438        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
439#ifdef USE_MINIKIN
440        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
441        typeface = TypefaceImpl_resolveDefault(typeface);
442        MinikinFont* baseFont = typeface->fFontCollection->baseFont(typeface->fStyle);
443        paint->setTypeface(reinterpret_cast<MinikinFontSkia*>(baseFont)->GetSkTypeface());
444#endif
445        SkScalar spacing = paint->getFontMetrics(metrics);
446        SkPaintOptionsAndroid paintOpts = paint->getPaintOptionsAndroid();
447        if (paintOpts.getFontVariant() == SkPaintOptionsAndroid::kElegant_Variant) {
448            SkScalar size = paint->getTextSize();
449            metrics->fTop = -size * kElegantTop / 2048;
450            metrics->fBottom = -size * kElegantBottom / 2048;
451            metrics->fAscent = -size * kElegantAscent / 2048;
452            metrics->fDescent = -size * kElegantDescent / 2048;
453            metrics->fLeading = size * kElegantLeading / 2048;
454            spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
455        }
456        return spacing;
457    }
458
459    static jfloat ascent(JNIEnv* env, jobject paint) {
460        NPE_CHECK_RETURN_ZERO(env, paint);
461        SkPaint::FontMetrics metrics;
462        getMetricsInternal(env, paint, &metrics);
463        return SkScalarToFloat(metrics.fAscent);
464    }
465
466    static jfloat descent(JNIEnv* env, jobject paint) {
467        NPE_CHECK_RETURN_ZERO(env, paint);
468        SkPaint::FontMetrics metrics;
469        getMetricsInternal(env, paint, &metrics);
470        return SkScalarToFloat(metrics.fDescent);
471    }
472
473    static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) {
474        NPE_CHECK_RETURN_ZERO(env, paint);
475        SkPaint::FontMetrics metrics;
476        SkScalar spacing = getMetricsInternal(env, paint, &metrics);
477
478        if (metricsObj) {
479            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
480            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
481            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
482            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
483            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
484            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
485        }
486        return SkScalarToFloat(spacing);
487    }
488
489    static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) {
490        NPE_CHECK_RETURN_ZERO(env, paint);
491        SkPaint::FontMetrics metrics;
492
493        getMetricsInternal(env, paint, &metrics);
494        int ascent = SkScalarRoundToInt(metrics.fAscent);
495        int descent = SkScalarRoundToInt(metrics.fDescent);
496        int leading = SkScalarRoundToInt(metrics.fLeading);
497
498        if (metricsObj) {
499            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
500            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
501            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
502            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
503            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
504            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
505        }
506        return descent - ascent + leading;
507    }
508
509    static jfloat measureText_CIII(JNIEnv* env, jobject jpaint, jcharArray text, jint index, jint count,
510            jint bidiFlags) {
511        NPE_CHECK_RETURN_ZERO(env, jpaint);
512        NPE_CHECK_RETURN_ZERO(env, text);
513
514        size_t textLength = env->GetArrayLength(text);
515        if ((index | count) < 0 || (size_t)(index + count) > textLength) {
516            doThrowAIOOBE(env);
517            return 0;
518        }
519        if (count == 0) {
520            return 0;
521        }
522
523        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
524        const jchar* textArray = env->GetCharArrayElements(text, NULL);
525        jfloat result = 0;
526
527#ifdef USE_MINIKIN
528        Layout layout;
529        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
530        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface);
531        layout.doLayout(textArray, index, count, textLength, css);
532        result = layout.getAdvance();
533#else
534        TextLayout::getTextRunAdvances(paint, textArray, index, count, textLength,
535                bidiFlags, NULL /* dont need all advances */, &result);
536#endif
537
538        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
539        return result;
540    }
541
542    static jfloat measureText_StringIII(JNIEnv* env, jobject jpaint, jstring text, jint start, jint end,
543            jint bidiFlags) {
544        NPE_CHECK_RETURN_ZERO(env, jpaint);
545        NPE_CHECK_RETURN_ZERO(env, text);
546
547        size_t textLength = env->GetStringLength(text);
548        int count = end - start;
549        if ((start | count) < 0 || (size_t)end > textLength) {
550            doThrowAIOOBE(env);
551            return 0;
552        }
553        if (count == 0) {
554            return 0;
555        }
556
557        const jchar* textArray = env->GetStringChars(text, NULL);
558        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
559        jfloat width = 0;
560
561#ifdef USE_MINIKIN
562        Layout layout;
563        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
564        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface);
565        layout.doLayout(textArray, start, count, textLength, css);
566        width = layout.getAdvance();
567#else
568        TextLayout::getTextRunAdvances(paint, textArray, start, count, textLength,
569                bidiFlags, NULL /* dont need all advances */, &width);
570#endif
571
572        env->ReleaseStringChars(text, textArray);
573        return width;
574    }
575
576    static jfloat measureText_StringI(JNIEnv* env, jobject jpaint, jstring text, jint bidiFlags) {
577        NPE_CHECK_RETURN_ZERO(env, jpaint);
578        NPE_CHECK_RETURN_ZERO(env, text);
579
580        size_t textLength = env->GetStringLength(text);
581        if (textLength == 0) {
582            return 0;
583        }
584
585        const jchar* textArray = env->GetStringChars(text, NULL);
586        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
587        jfloat width = 0;
588
589#ifdef USE_MINIKIN
590        Layout layout;
591        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
592        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface);
593        layout.doLayout(textArray, 0, textLength, textLength, css);
594        width = layout.getAdvance();
595#else
596        TextLayout::getTextRunAdvances(paint, textArray, 0, textLength, textLength,
597                bidiFlags, NULL /* dont need all advances */, &width);
598#endif
599
600        env->ReleaseStringChars(text, textArray);
601        return width;
602    }
603
604    static int dotextwidths(JNIEnv* env, SkPaint* paint, TypefaceImpl* typeface, const jchar text[], int count,
605            jfloatArray widths, jint bidiFlags) {
606        NPE_CHECK_RETURN_ZERO(env, paint);
607        NPE_CHECK_RETURN_ZERO(env, text);
608
609        if (count < 0 || !widths) {
610            doThrowAIOOBE(env);
611            return 0;
612        }
613        if (count == 0) {
614            return 0;
615        }
616        size_t widthsLength = env->GetArrayLength(widths);
617        if ((size_t)count > widthsLength) {
618            doThrowAIOOBE(env);
619            return 0;
620        }
621
622        AutoJavaFloatArray autoWidths(env, widths, count);
623        jfloat* widthsArray = autoWidths.ptr();
624
625#ifdef USE_MINIKIN
626        Layout layout;
627        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface);
628        layout.doLayout(text, 0, count, count, css);
629        layout.getAdvances(widthsArray);
630#else
631        TextLayout::getTextRunAdvances(paint, text, 0, count, count,
632                bidiFlags, widthsArray, NULL /* dont need totalAdvance */);
633#endif
634
635        return count;
636    }
637
638    static jint getTextWidths___CIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray text,
639            jint index, jint count, jint bidiFlags, jfloatArray widths) {
640        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
641        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
642        const jchar* textArray = env->GetCharArrayElements(text, NULL);
643        count = dotextwidths(env, paint, typeface, textArray + index, count, widths, bidiFlags);
644        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
645                                      JNI_ABORT);
646        return count;
647    }
648
649    static jint getTextWidths__StringIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring text,
650            jint start, jint end, jint bidiFlags, jfloatArray widths) {
651        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
652        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
653        const jchar* textArray = env->GetStringChars(text, NULL);
654        int count = dotextwidths(env, paint, typeface, textArray + start, end - start, widths, bidiFlags);
655        env->ReleaseStringChars(text, textArray);
656        return count;
657    }
658
659    static int doTextGlyphs(JNIEnv* env, SkPaint* paint, const jchar* text, jint start, jint count,
660            jint contextCount, jint flags, jcharArray glyphs) {
661        NPE_CHECK_RETURN_ZERO(env, paint);
662        NPE_CHECK_RETURN_ZERO(env, text);
663
664        if ((start | count | contextCount) < 0 || contextCount < count || !glyphs) {
665            doThrowAIOOBE(env);
666            return 0;
667        }
668        if (count == 0) {
669            return 0;
670        }
671        size_t glypthsLength = env->GetArrayLength(glyphs);
672        if ((size_t)count > glypthsLength) {
673            doThrowAIOOBE(env);
674            return 0;
675        }
676
677        jchar* glyphsArray = env->GetCharArrayElements(glyphs, NULL);
678
679        sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
680                text, start, count, contextCount, flags);
681        const jchar* shapedGlyphs = value->getGlyphs();
682        size_t glyphsCount = value->getGlyphsCount();
683        memcpy(glyphsArray, shapedGlyphs, sizeof(jchar) * glyphsCount);
684
685        env->ReleaseCharArrayElements(glyphs, glyphsArray, JNI_ABORT);
686        return glyphsCount;
687    }
688
689    static jint getTextGlyphs__StringIIIII_C(JNIEnv* env, jobject clazz, jlong paintHandle,
690            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint flags,
691            jcharArray glyphs) {
692        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
693        const jchar* textArray = env->GetStringChars(text, NULL);
694        int count = doTextGlyphs(env, paint, textArray + contextStart, start - contextStart,
695                end - start, contextEnd - contextStart, flags, glyphs);
696        env->ReleaseStringChars(text, textArray);
697        return count;
698    }
699
700    static jfloat doTextRunAdvances(JNIEnv *env, SkPaint *paint, TypefaceImpl* typeface, const jchar *text,
701                                    jint start, jint count, jint contextCount, jint flags,
702                                    jfloatArray advances, jint advancesIndex) {
703        NPE_CHECK_RETURN_ZERO(env, paint);
704        NPE_CHECK_RETURN_ZERO(env, text);
705
706        if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
707            doThrowAIOOBE(env);
708            return 0;
709        }
710        if (count == 0) {
711            return 0;
712        }
713        if (advances) {
714            size_t advancesLength = env->GetArrayLength(advances);
715            if ((size_t)count > advancesLength) {
716                doThrowAIOOBE(env);
717                return 0;
718            }
719        }
720        jfloat* advancesArray = new jfloat[count];
721        jfloat totalAdvance = 0;
722
723#ifdef USE_MINIKIN
724        Layout layout;
725        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, flags, typeface);
726        layout.doLayout(text, start, count, contextCount, css);
727        layout.getAdvances(advancesArray);
728        totalAdvance = layout.getAdvance();
729#else
730        TextLayout::getTextRunAdvances(paint, text, start, count, contextCount, flags,
731                                       advancesArray, &totalAdvance);
732#endif
733
734        if (advances != NULL) {
735            env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray);
736        }
737        delete [] advancesArray;
738        return totalAdvance;
739    }
740
741    static jfloat getTextRunAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
742            jlong typefaceHandle,
743            jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
744            jint flags, jfloatArray advances, jint advancesIndex) {
745        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
746        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
747        jchar* textArray = env->GetCharArrayElements(text, NULL);
748        jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextIndex,
749                index - contextIndex, count, contextCount, flags, advances, advancesIndex);
750        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
751        return result;
752    }
753
754    static jfloat getTextRunAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
755            jlong typefaceHandle,
756            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint flags,
757            jfloatArray advances, jint advancesIndex) {
758        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
759        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
760        const jchar* textArray = env->GetStringChars(text, NULL);
761        jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextStart,
762                start - contextStart, end - start, contextEnd - contextStart, flags,
763                advances, advancesIndex);
764        env->ReleaseStringChars(text, textArray);
765        return result;
766    }
767
768    static jint doTextRunCursor(JNIEnv *env, SkPaint* paint, const jchar *text, jint start,
769            jint count, jint flags, jint offset, jint opt) {
770        jfloat scalarArray[count];
771
772        TextLayout::getTextRunAdvances(paint, text, start, count, start + count, flags,
773                scalarArray, NULL /* dont need totalAdvance */);
774
775        jint pos = offset - start;
776        switch (opt) {
777        case AFTER:
778          if (pos < count) {
779            pos += 1;
780          }
781          // fall through
782        case AT_OR_AFTER:
783          while (pos < count && scalarArray[pos] == 0) {
784            ++pos;
785          }
786          break;
787        case BEFORE:
788          if (pos > 0) {
789            --pos;
790          }
791          // fall through
792        case AT_OR_BEFORE:
793          while (pos > 0 && scalarArray[pos] == 0) {
794            --pos;
795          }
796          break;
797        case AT:
798        default:
799          if (scalarArray[pos] == 0) {
800            pos = -1;
801          }
802          break;
803        }
804
805        if (pos != -1) {
806          pos += start;
807        }
808
809        return pos;
810    }
811
812    static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
813            jint contextStart, jint contextCount, jint flags, jint offset, jint cursorOpt) {
814        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
815        jchar* textArray = env->GetCharArrayElements(text, NULL);
816        jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, flags,
817                offset, cursorOpt);
818        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
819        return result;
820    }
821
822    static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text,
823            jint contextStart, jint contextEnd, jint flags, jint offset, jint cursorOpt) {
824        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
825        const jchar* textArray = env->GetStringChars(text, NULL);
826        jint result = doTextRunCursor(env, paint, textArray, contextStart,
827                contextEnd - contextStart, flags, offset, cursorOpt);
828        env->ReleaseStringChars(text, textArray);
829        return result;
830    }
831
832#ifdef USE_MINIKIN
833    class GetTextFunctor {
834    public:
835        GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, SkPaint* paint,
836                    uint16_t* glyphs, SkPoint* pos)
837                : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
838        }
839
840        void operator()(SkTypeface* t, size_t start, size_t end) {
841            for (size_t i = start; i < end; i++) {
842                glyphs[i] = layout.getGlyphId(i);
843                pos[i].fX = x + layout.getX(i);
844                pos[i].fY = y + layout.getY(i);
845            }
846            paint->setTypeface(t);
847            if (start == 0) {
848                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
849            } else {
850                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
851                path->addPath(tmpPath);
852            }
853        }
854    private:
855        const Layout& layout;
856        SkPath* path;
857        jfloat x;
858        jfloat y;
859        SkPaint* paint;
860        uint16_t* glyphs;
861        SkPoint* pos;
862        SkPath tmpPath;
863    };
864#endif
865
866    static void getTextPath(JNIEnv* env, SkPaint* paint, TypefaceImpl* typeface, const jchar* text,
867            jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
868#ifdef USE_MINIKIN
869        Layout layout;
870        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface);
871        layout.doLayout(text, 0, count, count, css);
872        size_t nGlyphs = layout.nGlyphs();
873        uint16_t* glyphs = new uint16_t[nGlyphs];
874        SkPoint* pos = new SkPoint[nGlyphs];
875
876        x += MinikinUtils::xOffsetForTextAlign(paint, layout);
877        SkPaint::Align align = paint->getTextAlign();
878        paint->setTextAlign(SkPaint::kLeft_Align);
879        paint->setTextEncoding(SkPaint::kGlyphID_TextEncoding);
880        GetTextFunctor f(layout, path, x, y, paint, glyphs, pos);
881        MinikinUtils::forFontRun(layout, f);
882        paint->setTextAlign(align);
883        delete[] glyphs;
884        delete[] pos;
885#else
886        TextLayout::getTextPath(paint, text, count, bidiFlags, x, y, path);
887#endif
888    }
889
890    static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle,
891            jlong typefaceHandle, jint bidiFlags,
892            jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
893        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
894        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
895        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
896        const jchar* textArray = env->GetCharArrayElements(text, NULL);
897        getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
898        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
899    }
900
901    static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle,
902            jlong typefaceHandle, jint bidiFlags,
903            jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
904        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
905        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
906        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
907        const jchar* textArray = env->GetStringChars(text, NULL);
908        getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
909        env->ReleaseStringChars(text, textArray);
910    }
911
912    static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius,
913                               jfloat dx, jfloat dy, jint color) {
914        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
915        if (radius <= 0) {
916            paint->setLooper(NULL);
917        }
918        else {
919            SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
920            paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref();
921        }
922    }
923
924    static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) {
925        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
926        return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL);
927    }
928
929    static int breakText(JNIEnv* env, SkPaint& paint, const jchar text[],
930                         int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
931                         SkPaint::TextBufferDirection tbd) {
932        sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(&paint,
933                text, 0, count, count, bidiFlags);
934        if (value == NULL) {
935            return 0;
936        }
937        SkScalar     measured;
938        size_t       bytes = paint.breakText(value->getGlyphs(), value->getGlyphsCount() << 1,
939                maxWidth, &measured, tbd);
940        SkASSERT((bytes & 1) == 0);
941
942        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
943            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
944            jfloat* array = autoMeasured.ptr();
945            array[0] = SkScalarToFloat(measured);
946        }
947        return bytes >> 1;
948    }
949
950    static jint breakTextC(JNIEnv* env, jobject jpaint, jcharArray jtext,
951            jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
952        NPE_CHECK_RETURN_ZERO(env, jpaint);
953        NPE_CHECK_RETURN_ZERO(env, jtext);
954
955        SkPaint::TextBufferDirection tbd;
956        if (count < 0) {
957            tbd = SkPaint::kBackward_TextBufferDirection;
958            count = -count;
959        }
960        else {
961            tbd = SkPaint::kForward_TextBufferDirection;
962        }
963
964        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
965            doThrowAIOOBE(env);
966            return 0;
967        }
968
969        SkPaint*     paint = GraphicsJNI::getNativePaint(env, jpaint);
970        const jchar* text = env->GetCharArrayElements(jtext, NULL);
971        count = breakText(env, *paint, text + index, count, maxWidth,
972                          bidiFlags, jmeasuredWidth, tbd);
973        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
974                                      JNI_ABORT);
975        return count;
976    }
977
978    static jint breakTextS(JNIEnv* env, jobject jpaint, jstring jtext,
979                jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
980        NPE_CHECK_RETURN_ZERO(env, jpaint);
981        NPE_CHECK_RETURN_ZERO(env, jtext);
982
983        SkPaint::TextBufferDirection tbd = forwards ?
984                                        SkPaint::kForward_TextBufferDirection :
985                                        SkPaint::kBackward_TextBufferDirection;
986
987        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
988        int count = env->GetStringLength(jtext);
989        const jchar* text = env->GetStringChars(jtext, NULL);
990        count = breakText(env, *paint, text, count, maxWidth, bidiFlags, jmeasuredWidth, tbd);
991        env->ReleaseStringChars(jtext, text);
992        return count;
993    }
994
995    static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
996            const SkPaint& paint, TypefaceImpl* typeface, jint bidiFlags) {
997        SkRect  r;
998        SkIRect ir;
999
1000#ifdef USE_MINIKIN
1001        Layout layout;
1002        std::string css = MinikinUtils::setLayoutProperties(&layout, &paint, bidiFlags, typeface);
1003        layout.doLayout(text, 0, count, count, css);
1004        MinikinRect rect;
1005        layout.getBounds(&rect);
1006        r.fLeft = rect.mLeft;
1007        r.fTop = rect.mTop;
1008        r.fRight = rect.mRight;
1009        r.fBottom = rect.mBottom;
1010#else
1011        sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(&paint,
1012                text, 0, count, count, bidiFlags);
1013        if (value == NULL) {
1014            return;
1015        }
1016        paint.measureText(value->getGlyphs(), value->getGlyphsCount() << 1, &r);
1017#endif
1018        r.roundOut(&ir);
1019        GraphicsJNI::irect_to_jrect(ir, env, bounds);
1020    }
1021
1022    static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
1023                                jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
1024        const SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);;
1025        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
1026        const jchar* textArray = env->GetStringChars(text, NULL);
1027        doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
1028        env->ReleaseStringChars(text, textArray);
1029    }
1030
1031    static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
1032                        jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
1033        const SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
1034        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
1035        const jchar* textArray = env->GetCharArrayElements(text, NULL);
1036        doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
1037        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
1038                                      JNI_ABORT);
1039    }
1040
1041};
1042
1043static JNINativeMethod methods[] = {
1044    {"finalizer", "(J)V", (void*) SkPaintGlue::finalizer},
1045    {"native_init","()J", (void*) SkPaintGlue::init},
1046    {"native_initWithPaint","(J)J", (void*) SkPaintGlue::initWithPaint},
1047    {"native_reset","(J)V", (void*) SkPaintGlue::reset},
1048    {"native_set","(JJ)V", (void*) SkPaintGlue::assign},
1049    {"getFlags","()I", (void*) SkPaintGlue::getFlags},
1050    {"setFlags","(I)V", (void*) SkPaintGlue::setFlags},
1051    {"getHinting","()I", (void*) SkPaintGlue::getHinting},
1052    {"setHinting","(I)V", (void*) SkPaintGlue::setHinting},
1053    {"setAntiAlias","(Z)V", (void*) SkPaintGlue::setAntiAlias},
1054    {"setSubpixelText","(Z)V", (void*) SkPaintGlue::setSubpixelText},
1055    {"setLinearText","(Z)V", (void*) SkPaintGlue::setLinearText},
1056    {"setUnderlineText","(Z)V", (void*) SkPaintGlue::setUnderlineText},
1057    {"setStrikeThruText","(Z)V", (void*) SkPaintGlue::setStrikeThruText},
1058    {"setFakeBoldText","(Z)V", (void*) SkPaintGlue::setFakeBoldText},
1059    {"setFilterBitmap","(Z)V", (void*) SkPaintGlue::setFilterBitmap},
1060    {"setDither","(Z)V", (void*) SkPaintGlue::setDither},
1061    {"native_getStyle","(J)I", (void*) SkPaintGlue::getStyle},
1062    {"native_setStyle","(JI)V", (void*) SkPaintGlue::setStyle},
1063    {"getColor","()I", (void*) SkPaintGlue::getColor},
1064    {"setColor","(I)V", (void*) SkPaintGlue::setColor},
1065    {"getAlpha","()I", (void*) SkPaintGlue::getAlpha},
1066    {"setAlpha","(I)V", (void*) SkPaintGlue::setAlpha},
1067    {"getStrokeWidth","()F", (void*) SkPaintGlue::getStrokeWidth},
1068    {"setStrokeWidth","(F)V", (void*) SkPaintGlue::setStrokeWidth},
1069    {"getStrokeMiter","()F", (void*) SkPaintGlue::getStrokeMiter},
1070    {"setStrokeMiter","(F)V", (void*) SkPaintGlue::setStrokeMiter},
1071    {"native_getStrokeCap","(J)I", (void*) SkPaintGlue::getStrokeCap},
1072    {"native_setStrokeCap","(JI)V", (void*) SkPaintGlue::setStrokeCap},
1073    {"native_getStrokeJoin","(J)I", (void*) SkPaintGlue::getStrokeJoin},
1074    {"native_setStrokeJoin","(JI)V", (void*) SkPaintGlue::setStrokeJoin},
1075    {"native_getFillPath","(JJJ)Z", (void*) SkPaintGlue::getFillPath},
1076    {"native_setShader","(JJ)J", (void*) SkPaintGlue::setShader},
1077    {"native_setColorFilter","(JJ)J", (void*) SkPaintGlue::setColorFilter},
1078    {"native_setXfermode","(JJ)J", (void*) SkPaintGlue::setXfermode},
1079    {"native_setPathEffect","(JJ)J", (void*) SkPaintGlue::setPathEffect},
1080    {"native_setMaskFilter","(JJ)J", (void*) SkPaintGlue::setMaskFilter},
1081    {"native_setTypeface","(JJ)J", (void*) SkPaintGlue::setTypeface},
1082    {"native_setRasterizer","(JJ)J", (void*) SkPaintGlue::setRasterizer},
1083    {"native_getTextAlign","(J)I", (void*) SkPaintGlue::getTextAlign},
1084    {"native_setTextAlign","(JI)V", (void*) SkPaintGlue::setTextAlign},
1085    {"native_setTextLocale","(JLjava/lang/String;)V", (void*) SkPaintGlue::setTextLocale},
1086    {"isElegantTextHeight","()Z", (void*) SkPaintGlue::isElegantTextHeight},
1087    {"setElegantTextHeight","(Z)V", (void*) SkPaintGlue::setElegantTextHeight},
1088    {"getTextSize","()F", (void*) SkPaintGlue::getTextSize},
1089    {"setTextSize","(F)V", (void*) SkPaintGlue::setTextSize},
1090    {"getTextScaleX","()F", (void*) SkPaintGlue::getTextScaleX},
1091    {"setTextScaleX","(F)V", (void*) SkPaintGlue::setTextScaleX},
1092    {"getTextSkewX","()F", (void*) SkPaintGlue::getTextSkewX},
1093    {"setTextSkewX","(F)V", (void*) SkPaintGlue::setTextSkewX},
1094    {"ascent","()F", (void*) SkPaintGlue::ascent},
1095    {"descent","()F", (void*) SkPaintGlue::descent},
1096    {"getFontMetrics", "(Landroid/graphics/Paint$FontMetrics;)F", (void*)SkPaintGlue::getFontMetrics},
1097    {"getFontMetricsInt", "(Landroid/graphics/Paint$FontMetricsInt;)I", (void*)SkPaintGlue::getFontMetricsInt},
1098    {"native_measureText","([CIII)F", (void*) SkPaintGlue::measureText_CIII},
1099    {"native_measureText","(Ljava/lang/String;I)F", (void*) SkPaintGlue::measureText_StringI},
1100    {"native_measureText","(Ljava/lang/String;III)F", (void*) SkPaintGlue::measureText_StringIII},
1101    {"native_breakText","([CIIFI[F)I", (void*) SkPaintGlue::breakTextC},
1102    {"native_breakText","(Ljava/lang/String;ZFI[F)I", (void*) SkPaintGlue::breakTextS},
1103    {"native_getTextWidths","(JJ[CIII[F)I", (void*) SkPaintGlue::getTextWidths___CIII_F},
1104    {"native_getTextWidths","(JJLjava/lang/String;III[F)I", (void*) SkPaintGlue::getTextWidths__StringIII_F},
1105    {"native_getTextRunAdvances","(JJ[CIIIII[FI)F",
1106        (void*) SkPaintGlue::getTextRunAdvances___CIIIII_FI},
1107    {"native_getTextRunAdvances","(JJLjava/lang/String;IIIII[FI)F",
1108        (void*) SkPaintGlue::getTextRunAdvances__StringIIIII_FI},
1109
1110
1111    {"native_getTextGlyphs","(JLjava/lang/String;IIIII[C)I",
1112        (void*) SkPaintGlue::getTextGlyphs__StringIIIII_C},
1113    {"native_getTextRunCursor", "(J[CIIIII)I", (void*) SkPaintGlue::getTextRunCursor___C},
1114    {"native_getTextRunCursor", "(JLjava/lang/String;IIIII)I",
1115        (void*) SkPaintGlue::getTextRunCursor__String},
1116    {"native_getTextPath","(JJI[CIIFFJ)V", (void*) SkPaintGlue::getTextPath___C},
1117    {"native_getTextPath","(JJILjava/lang/String;IIFFJ)V", (void*) SkPaintGlue::getTextPath__String},
1118    {"nativeGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V",
1119                                        (void*) SkPaintGlue::getStringBounds },
1120    {"nativeGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V",
1121                                    (void*) SkPaintGlue::getCharArrayBounds },
1122    {"native_setShadowLayer", "(JFFFI)V", (void*)SkPaintGlue::setShadowLayer},
1123    {"native_hasShadowLayer", "(J)Z", (void*)SkPaintGlue::hasShadowLayer}
1124};
1125
1126static jfieldID req_fieldID(jfieldID id) {
1127    SkASSERT(id);
1128    return id;
1129}
1130
1131int register_android_graphics_Paint(JNIEnv* env) {
1132    gFontMetrics_class = env->FindClass("android/graphics/Paint$FontMetrics");
1133    SkASSERT(gFontMetrics_class);
1134    gFontMetrics_class = (jclass)env->NewGlobalRef(gFontMetrics_class);
1135
1136    gFontMetrics_fieldID.top = req_fieldID(env->GetFieldID(gFontMetrics_class, "top", "F"));
1137    gFontMetrics_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetrics_class, "ascent", "F"));
1138    gFontMetrics_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetrics_class, "descent", "F"));
1139    gFontMetrics_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetrics_class, "bottom", "F"));
1140    gFontMetrics_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetrics_class, "leading", "F"));
1141
1142    gFontMetricsInt_class = env->FindClass("android/graphics/Paint$FontMetricsInt");
1143    SkASSERT(gFontMetricsInt_class);
1144    gFontMetricsInt_class = (jclass)env->NewGlobalRef(gFontMetricsInt_class);
1145
1146    gFontMetricsInt_fieldID.top = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "top", "I"));
1147    gFontMetricsInt_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "ascent", "I"));
1148    gFontMetricsInt_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "descent", "I"));
1149    gFontMetricsInt_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "bottom", "I"));
1150    gFontMetricsInt_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "leading", "I"));
1151
1152    int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Paint", methods,
1153        sizeof(methods) / sizeof(methods[0]));
1154    return result;
1155}
1156
1157}
1158