Paint.cpp revision 0627ec08dcc2e87c17e9b85f045dfb27dc4884b3 
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        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#endif
447        SkScalar spacing = paint->getFontMetrics(metrics);
448#ifdef USE_MINIKIN
449        // The populateSkPaint call may have changed fake bold / text skew
450        // because we want to measure with those effects applied, so now
451        // restore the original settings.
452        paint->setTextSkewX(saveSkewX);
453        paint->setFakeBoldText(savefakeBold);
454#endif
455        SkPaintOptionsAndroid paintOpts = paint->getPaintOptionsAndroid();
456        if (paintOpts.getFontVariant() == SkPaintOptionsAndroid::kElegant_Variant) {
457            SkScalar size = paint->getTextSize();
458            metrics->fTop = -size * kElegantTop / 2048;
459            metrics->fBottom = -size * kElegantBottom / 2048;
460            metrics->fAscent = -size * kElegantAscent / 2048;
461            metrics->fDescent = -size * kElegantDescent / 2048;
462            metrics->fLeading = size * kElegantLeading / 2048;
463            spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
464        }
465        return spacing;
466    }
467
468    static jfloat ascent(JNIEnv* env, jobject paint) {
469        NPE_CHECK_RETURN_ZERO(env, paint);
470        SkPaint::FontMetrics metrics;
471        getMetricsInternal(env, paint, &metrics);
472        return SkScalarToFloat(metrics.fAscent);
473    }
474
475    static jfloat descent(JNIEnv* env, jobject paint) {
476        NPE_CHECK_RETURN_ZERO(env, paint);
477        SkPaint::FontMetrics metrics;
478        getMetricsInternal(env, paint, &metrics);
479        return SkScalarToFloat(metrics.fDescent);
480    }
481
482    static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) {
483        NPE_CHECK_RETURN_ZERO(env, paint);
484        SkPaint::FontMetrics metrics;
485        SkScalar spacing = getMetricsInternal(env, paint, &metrics);
486
487        if (metricsObj) {
488            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
489            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
490            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
491            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
492            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
493            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
494        }
495        return SkScalarToFloat(spacing);
496    }
497
498    static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) {
499        NPE_CHECK_RETURN_ZERO(env, paint);
500        SkPaint::FontMetrics metrics;
501
502        getMetricsInternal(env, paint, &metrics);
503        int ascent = SkScalarRoundToInt(metrics.fAscent);
504        int descent = SkScalarRoundToInt(metrics.fDescent);
505        int leading = SkScalarRoundToInt(metrics.fLeading);
506
507        if (metricsObj) {
508            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
509            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
510            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
511            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
512            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
513            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
514        }
515        return descent - ascent + leading;
516    }
517
518    static jfloat measureText_CIII(JNIEnv* env, jobject jpaint, jcharArray text, jint index, jint count,
519            jint bidiFlags) {
520        NPE_CHECK_RETURN_ZERO(env, jpaint);
521        NPE_CHECK_RETURN_ZERO(env, text);
522
523        size_t textLength = env->GetArrayLength(text);
524        if ((index | count) < 0 || (size_t)(index + count) > textLength) {
525            doThrowAIOOBE(env);
526            return 0;
527        }
528        if (count == 0) {
529            return 0;
530        }
531
532        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
533        const jchar* textArray = env->GetCharArrayElements(text, NULL);
534        jfloat result = 0;
535
536#ifdef USE_MINIKIN
537        Layout layout;
538        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
539        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface);
540        layout.doLayout(textArray, index, count, textLength, css);
541        result = layout.getAdvance();
542#else
543        TextLayout::getTextRunAdvances(paint, textArray, index, count, textLength,
544                bidiFlags, NULL /* dont need all advances */, &result);
545#endif
546
547        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
548        return result;
549    }
550
551    static jfloat measureText_StringIII(JNIEnv* env, jobject jpaint, jstring text, jint start, jint end,
552            jint bidiFlags) {
553        NPE_CHECK_RETURN_ZERO(env, jpaint);
554        NPE_CHECK_RETURN_ZERO(env, text);
555
556        size_t textLength = env->GetStringLength(text);
557        int count = end - start;
558        if ((start | count) < 0 || (size_t)end > textLength) {
559            doThrowAIOOBE(env);
560            return 0;
561        }
562        if (count == 0) {
563            return 0;
564        }
565
566        const jchar* textArray = env->GetStringChars(text, NULL);
567        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
568        jfloat width = 0;
569
570#ifdef USE_MINIKIN
571        Layout layout;
572        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
573        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface);
574        layout.doLayout(textArray, start, count, textLength, css);
575        width = layout.getAdvance();
576#else
577        TextLayout::getTextRunAdvances(paint, textArray, start, count, textLength,
578                bidiFlags, NULL /* dont need all advances */, &width);
579#endif
580
581        env->ReleaseStringChars(text, textArray);
582        return width;
583    }
584
585    static jfloat measureText_StringI(JNIEnv* env, jobject jpaint, jstring text, jint bidiFlags) {
586        NPE_CHECK_RETURN_ZERO(env, jpaint);
587        NPE_CHECK_RETURN_ZERO(env, text);
588
589        size_t textLength = env->GetStringLength(text);
590        if (textLength == 0) {
591            return 0;
592        }
593
594        const jchar* textArray = env->GetStringChars(text, NULL);
595        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
596        jfloat width = 0;
597
598#ifdef USE_MINIKIN
599        Layout layout;
600        TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
601        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface);
602        layout.doLayout(textArray, 0, textLength, textLength, css);
603        width = layout.getAdvance();
604#else
605        TextLayout::getTextRunAdvances(paint, textArray, 0, textLength, textLength,
606                bidiFlags, NULL /* dont need all advances */, &width);
607#endif
608
609        env->ReleaseStringChars(text, textArray);
610        return width;
611    }
612
613    static int dotextwidths(JNIEnv* env, SkPaint* paint, TypefaceImpl* typeface, const jchar text[], int count,
614            jfloatArray widths, jint bidiFlags) {
615        NPE_CHECK_RETURN_ZERO(env, paint);
616        NPE_CHECK_RETURN_ZERO(env, text);
617
618        if (count < 0 || !widths) {
619            doThrowAIOOBE(env);
620            return 0;
621        }
622        if (count == 0) {
623            return 0;
624        }
625        size_t widthsLength = env->GetArrayLength(widths);
626        if ((size_t)count > widthsLength) {
627            doThrowAIOOBE(env);
628            return 0;
629        }
630
631        AutoJavaFloatArray autoWidths(env, widths, count);
632        jfloat* widthsArray = autoWidths.ptr();
633
634#ifdef USE_MINIKIN
635        Layout layout;
636        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface);
637        layout.doLayout(text, 0, count, count, css);
638        layout.getAdvances(widthsArray);
639#else
640        TextLayout::getTextRunAdvances(paint, text, 0, count, count,
641                bidiFlags, widthsArray, NULL /* dont need totalAdvance */);
642#endif
643
644        return count;
645    }
646
647    static jint getTextWidths___CIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray text,
648            jint index, jint count, jint bidiFlags, jfloatArray widths) {
649        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
650        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
651        const jchar* textArray = env->GetCharArrayElements(text, NULL);
652        count = dotextwidths(env, paint, typeface, textArray + index, count, widths, bidiFlags);
653        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
654                                      JNI_ABORT);
655        return count;
656    }
657
658    static jint getTextWidths__StringIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring text,
659            jint start, jint end, jint bidiFlags, jfloatArray widths) {
660        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
661        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
662        const jchar* textArray = env->GetStringChars(text, NULL);
663        int count = dotextwidths(env, paint, typeface, textArray + start, end - start, widths, bidiFlags);
664        env->ReleaseStringChars(text, textArray);
665        return count;
666    }
667
668    static int doTextGlyphs(JNIEnv* env, SkPaint* paint, const jchar* text, jint start, jint count,
669            jint contextCount, jint flags, jcharArray glyphs) {
670        NPE_CHECK_RETURN_ZERO(env, paint);
671        NPE_CHECK_RETURN_ZERO(env, text);
672
673        if ((start | count | contextCount) < 0 || contextCount < count || !glyphs) {
674            doThrowAIOOBE(env);
675            return 0;
676        }
677        if (count == 0) {
678            return 0;
679        }
680        size_t glypthsLength = env->GetArrayLength(glyphs);
681        if ((size_t)count > glypthsLength) {
682            doThrowAIOOBE(env);
683            return 0;
684        }
685
686        jchar* glyphsArray = env->GetCharArrayElements(glyphs, NULL);
687
688        sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
689                text, start, count, contextCount, flags);
690        const jchar* shapedGlyphs = value->getGlyphs();
691        size_t glyphsCount = value->getGlyphsCount();
692        memcpy(glyphsArray, shapedGlyphs, sizeof(jchar) * glyphsCount);
693
694        env->ReleaseCharArrayElements(glyphs, glyphsArray, JNI_ABORT);
695        return glyphsCount;
696    }
697
698    static jint getTextGlyphs__StringIIIII_C(JNIEnv* env, jobject clazz, jlong paintHandle,
699            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint flags,
700            jcharArray glyphs) {
701        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
702        const jchar* textArray = env->GetStringChars(text, NULL);
703        int count = doTextGlyphs(env, paint, textArray + contextStart, start - contextStart,
704                end - start, contextEnd - contextStart, flags, glyphs);
705        env->ReleaseStringChars(text, textArray);
706        return count;
707    }
708
709    static jfloat doTextRunAdvances(JNIEnv *env, SkPaint *paint, TypefaceImpl* typeface, const jchar *text,
710                                    jint start, jint count, jint contextCount, jint flags,
711                                    jfloatArray advances, jint advancesIndex) {
712        NPE_CHECK_RETURN_ZERO(env, paint);
713        NPE_CHECK_RETURN_ZERO(env, text);
714
715        if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
716            doThrowAIOOBE(env);
717            return 0;
718        }
719        if (count == 0) {
720            return 0;
721        }
722        if (advances) {
723            size_t advancesLength = env->GetArrayLength(advances);
724            if ((size_t)count > advancesLength) {
725                doThrowAIOOBE(env);
726                return 0;
727            }
728        }
729        jfloat* advancesArray = new jfloat[count];
730        jfloat totalAdvance = 0;
731
732#ifdef USE_MINIKIN
733        Layout layout;
734        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, flags, typeface);
735        layout.doLayout(text, start, count, contextCount, css);
736        layout.getAdvances(advancesArray);
737        totalAdvance = layout.getAdvance();
738#else
739        TextLayout::getTextRunAdvances(paint, text, start, count, contextCount, flags,
740                                       advancesArray, &totalAdvance);
741#endif
742
743        if (advances != NULL) {
744            env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray);
745        }
746        delete [] advancesArray;
747        return totalAdvance;
748    }
749
750    static jfloat getTextRunAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
751            jlong typefaceHandle,
752            jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
753            jint flags, jfloatArray advances, jint advancesIndex) {
754        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
755        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
756        jchar* textArray = env->GetCharArrayElements(text, NULL);
757        jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextIndex,
758                index - contextIndex, count, contextCount, flags, advances, advancesIndex);
759        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
760        return result;
761    }
762
763    static jfloat getTextRunAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
764            jlong typefaceHandle,
765            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint flags,
766            jfloatArray advances, jint advancesIndex) {
767        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
768        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
769        const jchar* textArray = env->GetStringChars(text, NULL);
770        jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextStart,
771                start - contextStart, end - start, contextEnd - contextStart, flags,
772                advances, advancesIndex);
773        env->ReleaseStringChars(text, textArray);
774        return result;
775    }
776
777    static jint doTextRunCursor(JNIEnv *env, SkPaint* paint, const jchar *text, jint start,
778            jint count, jint flags, jint offset, jint opt) {
779        jfloat scalarArray[count];
780
781        TextLayout::getTextRunAdvances(paint, text, start, count, start + count, flags,
782                scalarArray, NULL /* dont need totalAdvance */);
783
784        jint pos = offset - start;
785        switch (opt) {
786        case AFTER:
787          if (pos < count) {
788            pos += 1;
789          }
790          // fall through
791        case AT_OR_AFTER:
792          while (pos < count && scalarArray[pos] == 0) {
793            ++pos;
794          }
795          break;
796        case BEFORE:
797          if (pos > 0) {
798            --pos;
799          }
800          // fall through
801        case AT_OR_BEFORE:
802          while (pos > 0 && scalarArray[pos] == 0) {
803            --pos;
804          }
805          break;
806        case AT:
807        default:
808          if (scalarArray[pos] == 0) {
809            pos = -1;
810          }
811          break;
812        }
813
814        if (pos != -1) {
815          pos += start;
816        }
817
818        return pos;
819    }
820
821    static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
822            jint contextStart, jint contextCount, jint flags, jint offset, jint cursorOpt) {
823        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
824        jchar* textArray = env->GetCharArrayElements(text, NULL);
825        jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, flags,
826                offset, cursorOpt);
827        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
828        return result;
829    }
830
831    static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text,
832            jint contextStart, jint contextEnd, jint flags, jint offset, jint cursorOpt) {
833        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
834        const jchar* textArray = env->GetStringChars(text, NULL);
835        jint result = doTextRunCursor(env, paint, textArray, contextStart,
836                contextEnd - contextStart, flags, offset, cursorOpt);
837        env->ReleaseStringChars(text, textArray);
838        return result;
839    }
840
841#ifdef USE_MINIKIN
842    class GetTextFunctor {
843    public:
844        GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, SkPaint* paint,
845                    uint16_t* glyphs, SkPoint* pos)
846                : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
847        }
848
849        void operator()(size_t start, size_t end) {
850            for (size_t i = start; i < end; i++) {
851                glyphs[i] = layout.getGlyphId(i);
852                pos[i].fX = x + layout.getX(i);
853                pos[i].fY = y + layout.getY(i);
854            }
855            if (start == 0) {
856                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
857            } else {
858                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
859                path->addPath(tmpPath);
860            }
861        }
862    private:
863        const Layout& layout;
864        SkPath* path;
865        jfloat x;
866        jfloat y;
867        SkPaint* paint;
868        uint16_t* glyphs;
869        SkPoint* pos;
870        SkPath tmpPath;
871    };
872#endif
873
874    static void getTextPath(JNIEnv* env, SkPaint* paint, TypefaceImpl* typeface, const jchar* text,
875            jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
876#ifdef USE_MINIKIN
877        Layout layout;
878        std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface);
879        layout.doLayout(text, 0, count, count, css);
880        size_t nGlyphs = layout.nGlyphs();
881        uint16_t* glyphs = new uint16_t[nGlyphs];
882        SkPoint* pos = new SkPoint[nGlyphs];
883
884        x += MinikinUtils::xOffsetForTextAlign(paint, layout);
885        SkPaint::Align align = paint->getTextAlign();
886        paint->setTextAlign(SkPaint::kLeft_Align);
887        paint->setTextEncoding(SkPaint::kGlyphID_TextEncoding);
888        GetTextFunctor f(layout, path, x, y, paint, glyphs, pos);
889        MinikinUtils::forFontRun(layout, paint, f);
890        paint->setTextAlign(align);
891        delete[] glyphs;
892        delete[] pos;
893#else
894        TextLayout::getTextPath(paint, text, count, bidiFlags, x, y, path);
895#endif
896    }
897
898    static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle,
899            jlong typefaceHandle, jint bidiFlags,
900            jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
901        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
902        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
903        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
904        const jchar* textArray = env->GetCharArrayElements(text, NULL);
905        getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
906        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
907    }
908
909    static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle,
910            jlong typefaceHandle, jint bidiFlags,
911            jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
912        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
913        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
914        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
915        const jchar* textArray = env->GetStringChars(text, NULL);
916        getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
917        env->ReleaseStringChars(text, textArray);
918    }
919
920    static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius,
921                               jfloat dx, jfloat dy, jint color) {
922        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
923        if (radius <= 0) {
924            paint->setLooper(NULL);
925        }
926        else {
927            SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
928            paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref();
929        }
930    }
931
932    static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) {
933        SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
934        return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL);
935    }
936
937    static int breakText(JNIEnv* env, SkPaint& paint, const jchar text[],
938                         int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
939                         SkPaint::TextBufferDirection tbd) {
940        sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(&paint,
941                text, 0, count, count, bidiFlags);
942        if (value == NULL) {
943            return 0;
944        }
945        SkScalar     measured;
946        size_t       bytes = paint.breakText(value->getGlyphs(), value->getGlyphsCount() << 1,
947                maxWidth, &measured, tbd);
948        SkASSERT((bytes & 1) == 0);
949
950        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
951            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
952            jfloat* array = autoMeasured.ptr();
953            array[0] = SkScalarToFloat(measured);
954        }
955        return bytes >> 1;
956    }
957
958    static jint breakTextC(JNIEnv* env, jobject jpaint, jcharArray jtext,
959            jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
960        NPE_CHECK_RETURN_ZERO(env, jpaint);
961        NPE_CHECK_RETURN_ZERO(env, jtext);
962
963        SkPaint::TextBufferDirection tbd;
964        if (count < 0) {
965            tbd = SkPaint::kBackward_TextBufferDirection;
966            count = -count;
967        }
968        else {
969            tbd = SkPaint::kForward_TextBufferDirection;
970        }
971
972        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
973            doThrowAIOOBE(env);
974            return 0;
975        }
976
977        SkPaint*     paint = GraphicsJNI::getNativePaint(env, jpaint);
978        const jchar* text = env->GetCharArrayElements(jtext, NULL);
979        count = breakText(env, *paint, text + index, count, maxWidth,
980                          bidiFlags, jmeasuredWidth, tbd);
981        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
982                                      JNI_ABORT);
983        return count;
984    }
985
986    static jint breakTextS(JNIEnv* env, jobject jpaint, jstring jtext,
987                jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
988        NPE_CHECK_RETURN_ZERO(env, jpaint);
989        NPE_CHECK_RETURN_ZERO(env, jtext);
990
991        SkPaint::TextBufferDirection tbd = forwards ?
992                                        SkPaint::kForward_TextBufferDirection :
993                                        SkPaint::kBackward_TextBufferDirection;
994
995        SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint);
996        int count = env->GetStringLength(jtext);
997        const jchar* text = env->GetStringChars(jtext, NULL);
998        count = breakText(env, *paint, text, count, maxWidth, bidiFlags, jmeasuredWidth, tbd);
999        env->ReleaseStringChars(jtext, text);
1000        return count;
1001    }
1002
1003    static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
1004            const SkPaint& paint, TypefaceImpl* typeface, jint bidiFlags) {
1005        SkRect  r;
1006        SkIRect ir;
1007
1008#ifdef USE_MINIKIN
1009        Layout layout;
1010        std::string css = MinikinUtils::setLayoutProperties(&layout, &paint, bidiFlags, typeface);
1011        layout.doLayout(text, 0, count, count, css);
1012        MinikinRect rect;
1013        layout.getBounds(&rect);
1014        r.fLeft = rect.mLeft;
1015        r.fTop = rect.mTop;
1016        r.fRight = rect.mRight;
1017        r.fBottom = rect.mBottom;
1018#else
1019        sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(&paint,
1020                text, 0, count, count, bidiFlags);
1021        if (value == NULL) {
1022            return;
1023        }
1024        paint.measureText(value->getGlyphs(), value->getGlyphsCount() << 1, &r);
1025#endif
1026        r.roundOut(&ir);
1027        GraphicsJNI::irect_to_jrect(ir, env, bounds);
1028    }
1029
1030    static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
1031                                jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
1032        const SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);;
1033        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
1034        const jchar* textArray = env->GetStringChars(text, NULL);
1035        doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
1036        env->ReleaseStringChars(text, textArray);
1037    }
1038
1039    static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
1040                        jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
1041        const SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);
1042        TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
1043        const jchar* textArray = env->GetCharArrayElements(text, NULL);
1044        doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
1045        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
1046                                      JNI_ABORT);
1047    }
1048
1049};
1050
1051static JNINativeMethod methods[] = {
1052    {"finalizer", "(J)V", (void*) SkPaintGlue::finalizer},
1053    {"native_init","()J", (void*) SkPaintGlue::init},
1054    {"native_initWithPaint","(J)J", (void*) SkPaintGlue::initWithPaint},
1055    {"native_reset","(J)V", (void*) SkPaintGlue::reset},
1056    {"native_set","(JJ)V", (void*) SkPaintGlue::assign},
1057    {"getFlags","()I", (void*) SkPaintGlue::getFlags},
1058    {"setFlags","(I)V", (void*) SkPaintGlue::setFlags},
1059    {"getHinting","()I", (void*) SkPaintGlue::getHinting},
1060    {"setHinting","(I)V", (void*) SkPaintGlue::setHinting},
1061    {"setAntiAlias","(Z)V", (void*) SkPaintGlue::setAntiAlias},
1062    {"setSubpixelText","(Z)V", (void*) SkPaintGlue::setSubpixelText},
1063    {"setLinearText","(Z)V", (void*) SkPaintGlue::setLinearText},
1064    {"setUnderlineText","(Z)V", (void*) SkPaintGlue::setUnderlineText},
1065    {"setStrikeThruText","(Z)V", (void*) SkPaintGlue::setStrikeThruText},
1066    {"setFakeBoldText","(Z)V", (void*) SkPaintGlue::setFakeBoldText},
1067    {"setFilterBitmap","(Z)V", (void*) SkPaintGlue::setFilterBitmap},
1068    {"setDither","(Z)V", (void*) SkPaintGlue::setDither},
1069    {"native_getStyle","(J)I", (void*) SkPaintGlue::getStyle},
1070    {"native_setStyle","(JI)V", (void*) SkPaintGlue::setStyle},
1071    {"getColor","()I", (void*) SkPaintGlue::getColor},
1072    {"setColor","(I)V", (void*) SkPaintGlue::setColor},
1073    {"getAlpha","()I", (void*) SkPaintGlue::getAlpha},
1074    {"setAlpha","(I)V", (void*) SkPaintGlue::setAlpha},
1075    {"getStrokeWidth","()F", (void*) SkPaintGlue::getStrokeWidth},
1076    {"setStrokeWidth","(F)V", (void*) SkPaintGlue::setStrokeWidth},
1077    {"getStrokeMiter","()F", (void*) SkPaintGlue::getStrokeMiter},
1078    {"setStrokeMiter","(F)V", (void*) SkPaintGlue::setStrokeMiter},
1079    {"native_getStrokeCap","(J)I", (void*) SkPaintGlue::getStrokeCap},
1080    {"native_setStrokeCap","(JI)V", (void*) SkPaintGlue::setStrokeCap},
1081    {"native_getStrokeJoin","(J)I", (void*) SkPaintGlue::getStrokeJoin},
1082    {"native_setStrokeJoin","(JI)V", (void*) SkPaintGlue::setStrokeJoin},
1083    {"native_getFillPath","(JJJ)Z", (void*) SkPaintGlue::getFillPath},
1084    {"native_setShader","(JJ)J", (void*) SkPaintGlue::setShader},
1085    {"native_setColorFilter","(JJ)J", (void*) SkPaintGlue::setColorFilter},
1086    {"native_setXfermode","(JJ)J", (void*) SkPaintGlue::setXfermode},
1087    {"native_setPathEffect","(JJ)J", (void*) SkPaintGlue::setPathEffect},
1088    {"native_setMaskFilter","(JJ)J", (void*) SkPaintGlue::setMaskFilter},
1089    {"native_setTypeface","(JJ)J", (void*) SkPaintGlue::setTypeface},
1090    {"native_setRasterizer","(JJ)J", (void*) SkPaintGlue::setRasterizer},
1091    {"native_getTextAlign","(J)I", (void*) SkPaintGlue::getTextAlign},
1092    {"native_setTextAlign","(JI)V", (void*) SkPaintGlue::setTextAlign},
1093    {"native_setTextLocale","(JLjava/lang/String;)V", (void*) SkPaintGlue::setTextLocale},
1094    {"isElegantTextHeight","()Z", (void*) SkPaintGlue::isElegantTextHeight},
1095    {"setElegantTextHeight","(Z)V", (void*) SkPaintGlue::setElegantTextHeight},
1096    {"getTextSize","()F", (void*) SkPaintGlue::getTextSize},
1097    {"setTextSize","(F)V", (void*) SkPaintGlue::setTextSize},
1098    {"getTextScaleX","()F", (void*) SkPaintGlue::getTextScaleX},
1099    {"setTextScaleX","(F)V", (void*) SkPaintGlue::setTextScaleX},
1100    {"getTextSkewX","()F", (void*) SkPaintGlue::getTextSkewX},
1101    {"setTextSkewX","(F)V", (void*) SkPaintGlue::setTextSkewX},
1102    {"ascent","()F", (void*) SkPaintGlue::ascent},
1103    {"descent","()F", (void*) SkPaintGlue::descent},
1104    {"getFontMetrics", "(Landroid/graphics/Paint$FontMetrics;)F", (void*)SkPaintGlue::getFontMetrics},
1105    {"getFontMetricsInt", "(Landroid/graphics/Paint$FontMetricsInt;)I", (void*)SkPaintGlue::getFontMetricsInt},
1106    {"native_measureText","([CIII)F", (void*) SkPaintGlue::measureText_CIII},
1107    {"native_measureText","(Ljava/lang/String;I)F", (void*) SkPaintGlue::measureText_StringI},
1108    {"native_measureText","(Ljava/lang/String;III)F", (void*) SkPaintGlue::measureText_StringIII},
1109    {"native_breakText","([CIIFI[F)I", (void*) SkPaintGlue::breakTextC},
1110    {"native_breakText","(Ljava/lang/String;ZFI[F)I", (void*) SkPaintGlue::breakTextS},
1111    {"native_getTextWidths","(JJ[CIII[F)I", (void*) SkPaintGlue::getTextWidths___CIII_F},
1112    {"native_getTextWidths","(JJLjava/lang/String;III[F)I", (void*) SkPaintGlue::getTextWidths__StringIII_F},
1113    {"native_getTextRunAdvances","(JJ[CIIIII[FI)F",
1114        (void*) SkPaintGlue::getTextRunAdvances___CIIIII_FI},
1115    {"native_getTextRunAdvances","(JJLjava/lang/String;IIIII[FI)F",
1116        (void*) SkPaintGlue::getTextRunAdvances__StringIIIII_FI},
1117
1118
1119    {"native_getTextGlyphs","(JLjava/lang/String;IIIII[C)I",
1120        (void*) SkPaintGlue::getTextGlyphs__StringIIIII_C},
1121    {"native_getTextRunCursor", "(J[CIIIII)I", (void*) SkPaintGlue::getTextRunCursor___C},
1122    {"native_getTextRunCursor", "(JLjava/lang/String;IIIII)I",
1123        (void*) SkPaintGlue::getTextRunCursor__String},
1124    {"native_getTextPath","(JJI[CIIFFJ)V", (void*) SkPaintGlue::getTextPath___C},
1125    {"native_getTextPath","(JJILjava/lang/String;IIFFJ)V", (void*) SkPaintGlue::getTextPath__String},
1126    {"nativeGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V",
1127                                        (void*) SkPaintGlue::getStringBounds },
1128    {"nativeGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V",
1129                                    (void*) SkPaintGlue::getCharArrayBounds },
1130    {"native_setShadowLayer", "(JFFFI)V", (void*)SkPaintGlue::setShadowLayer},
1131    {"native_hasShadowLayer", "(J)Z", (void*)SkPaintGlue::hasShadowLayer}
1132};
1133
1134static jfieldID req_fieldID(jfieldID id) {
1135    SkASSERT(id);
1136    return id;
1137}
1138
1139int register_android_graphics_Paint(JNIEnv* env) {
1140    gFontMetrics_class = env->FindClass("android/graphics/Paint$FontMetrics");
1141    SkASSERT(gFontMetrics_class);
1142    gFontMetrics_class = (jclass)env->NewGlobalRef(gFontMetrics_class);
1143
1144    gFontMetrics_fieldID.top = req_fieldID(env->GetFieldID(gFontMetrics_class, "top", "F"));
1145    gFontMetrics_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetrics_class, "ascent", "F"));
1146    gFontMetrics_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetrics_class, "descent", "F"));
1147    gFontMetrics_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetrics_class, "bottom", "F"));
1148    gFontMetrics_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetrics_class, "leading", "F"));
1149
1150    gFontMetricsInt_class = env->FindClass("android/graphics/Paint$FontMetricsInt");
1151    SkASSERT(gFontMetricsInt_class);
1152    gFontMetricsInt_class = (jclass)env->NewGlobalRef(gFontMetricsInt_class);
1153
1154    gFontMetricsInt_fieldID.top = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "top", "I"));
1155    gFontMetricsInt_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "ascent", "I"));
1156    gFontMetricsInt_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "descent", "I"));
1157    gFontMetricsInt_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "bottom", "I"));
1158    gFontMetricsInt_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "leading", "I"));
1159
1160    int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Paint", methods,
1161        sizeof(methods) / sizeof(methods[0]));
1162    return result;
1163}
1164
1165}
1166