Paint.cpp revision 5d74b1c76f5da4510a1d70d8d3b0e8c15765f231 
1/* libs/android_runtime/android/graphics/Paint.cpp
2**
3** Copyright 2006, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18#define LOG_TAG "Paint"
19
20#include <utils/Log.h>
21
22#include "jni.h"
23#include "GraphicsJNI.h"
24#include "core_jni_helpers.h"
25#include <ScopedStringChars.h>
26#include <ScopedUtfChars.h>
27
28#include "SkBlurDrawLooper.h"
29#include "SkColorFilter.h"
30#include "SkMaskFilter.h"
31#include "SkPath.h"
32#include "SkPathEffect.h"
33#include "SkShader.h"
34#include "SkBlendMode.h"
35#include "unicode/uloc.h"
36#include "unicode/ushape.h"
37#include "utils/Blur.h"
38
39#include <hwui/MinikinSkia.h>
40#include <hwui/MinikinUtils.h>
41#include <hwui/Paint.h>
42#include <hwui/Typeface.h>
43#include <minikin/GraphemeBreak.h>
44#include <minikin/Measurement.h>
45#include <unicode/utf16.h>
46
47#include <cassert>
48#include <cstring>
49#include <memory>
50#include <vector>
51
52namespace android {
53
54struct JMetricsID {
55    jfieldID    top;
56    jfieldID    ascent;
57    jfieldID    descent;
58    jfieldID    bottom;
59    jfieldID    leading;
60};
61
62static jclass   gFontMetrics_class;
63static JMetricsID gFontMetrics_fieldID;
64
65static jclass   gFontMetricsInt_class;
66static JMetricsID gFontMetricsInt_fieldID;
67
68static void defaultSettingsForAndroid(Paint* paint) {
69    // GlyphID encoding is required because we are using Harfbuzz shaping
70    paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
71}
72
73namespace PaintGlue {
74    enum MoveOpt {
75        AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
76    };
77
78    static void deletePaint(Paint* paint) {
79        delete paint;
80    }
81
82    static jlong getNativeFinalizer(JNIEnv*, jobject) {
83        return static_cast<jlong>(reinterpret_cast<uintptr_t>(&deletePaint));
84    }
85
86    static jlong init(JNIEnv* env, jobject) {
87        static_assert(1 <<  0 == SkPaint::kAntiAlias_Flag,             "paint_flags_mismatch");
88        static_assert(1 <<  2 == SkPaint::kDither_Flag,                "paint_flags_mismatch");
89        static_assert(1 <<  3 == SkPaint::kUnderlineText_ReserveFlag,  "paint_flags_mismatch");
90        static_assert(1 <<  4 == SkPaint::kStrikeThruText_ReserveFlag, "paint_flags_mismatch");
91        static_assert(1 <<  5 == SkPaint::kFakeBoldText_Flag,          "paint_flags_mismatch");
92        static_assert(1 <<  6 == SkPaint::kLinearText_Flag,            "paint_flags_mismatch");
93        static_assert(1 <<  7 == SkPaint::kSubpixelText_Flag,          "paint_flags_mismatch");
94        static_assert(1 <<  8 == SkPaint::kDevKernText_Flag,           "paint_flags_mismatch");
95        static_assert(1 << 10 == SkPaint::kEmbeddedBitmapText_Flag,    "paint_flags_mismatch");
96
97        Paint* obj = new Paint();
98        defaultSettingsForAndroid(obj);
99        return reinterpret_cast<jlong>(obj);
100    }
101
102    static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
103        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
104        Paint* obj = new Paint(*paint);
105        return reinterpret_cast<jlong>(obj);
106    }
107
108    static int breakText(JNIEnv* env, const Paint& paint, Typeface* typeface, const jchar text[],
109            int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
110            const bool forwardScan) {
111        size_t measuredCount = 0;
112        float measured = 0;
113
114        std::unique_ptr<float[]> advancesArray(new float[count]);
115        MinikinUtils::measureText(&paint, bidiFlags, typeface, text, 0, count, count,
116                advancesArray.get());
117
118        for (int i = 0; i < count; i++) {
119            // traverse in the given direction
120            int index = forwardScan ? i : (count - i - 1);
121            float width = advancesArray[index];
122            if (measured + width > maxWidth) {
123                break;
124            }
125            // properly handle clusters when scanning backwards
126            if (forwardScan || width != 0.0f) {
127                measuredCount = i + 1;
128            }
129            measured += width;
130        }
131
132        if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
133            AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
134            jfloat* array = autoMeasured.ptr();
135            array[0] = measured;
136        }
137        return measuredCount;
138    }
139
140    static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle,
141            jcharArray jtext, jint index, jint count, jfloat maxWidth, jint bidiFlags,
142            jfloatArray jmeasuredWidth) {
143        NPE_CHECK_RETURN_ZERO(env, jtext);
144
145        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
146        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
147
148        bool forwardTextDirection;
149        if (count < 0) {
150            forwardTextDirection = false;
151            count = -count;
152        }
153        else {
154            forwardTextDirection = true;
155        }
156
157        if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
158            doThrowAIOOBE(env);
159            return 0;
160        }
161
162        const jchar* text = env->GetCharArrayElements(jtext, nullptr);
163        count = breakText(env, *paint, typeface, text + index, count, maxWidth,
164                          bidiFlags, jmeasuredWidth, forwardTextDirection);
165        env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
166                                      JNI_ABORT);
167        return count;
168    }
169
170    static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext,
171                jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
172        NPE_CHECK_RETURN_ZERO(env, jtext);
173
174        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
175        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
176
177        int count = env->GetStringLength(jtext);
178        const jchar* text = env->GetStringChars(jtext, nullptr);
179        count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, forwards);
180        env->ReleaseStringChars(jtext, text);
181        return count;
182    }
183
184    static jfloat doTextAdvances(JNIEnv *env, Paint *paint, Typeface* typeface,
185            const jchar *text, jint start, jint count, jint contextCount, jint bidiFlags,
186            jfloatArray advances, jint advancesIndex) {
187        NPE_CHECK_RETURN_ZERO(env, text);
188
189        if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
190            doThrowAIOOBE(env);
191            return 0;
192        }
193        if (count == 0) {
194            return 0;
195        }
196        if (advances) {
197            size_t advancesLength = env->GetArrayLength(advances);
198            if ((size_t)(count  + advancesIndex) > advancesLength) {
199                doThrowAIOOBE(env);
200                return 0;
201            }
202        }
203        std::unique_ptr<jfloat[]> advancesArray;
204        if (advances) {
205            advancesArray.reset(new jfloat[count]);
206        }
207        const float advance = MinikinUtils::measureText(paint, bidiFlags, typeface, text,
208                start, count, contextCount, advancesArray.get());
209        if (advances) {
210            env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray.get());
211        }
212        return advance;
213    }
214
215    static jfloat getTextAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
216            jlong typefaceHandle,
217            jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
218            jint bidiFlags, jfloatArray advances, jint advancesIndex) {
219        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
220        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
221        jchar* textArray = env->GetCharArrayElements(text, nullptr);
222        jfloat result = doTextAdvances(env, paint, typeface, textArray + contextIndex,
223                index - contextIndex, count, contextCount, bidiFlags, advances, advancesIndex);
224        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
225        return result;
226    }
227
228    static jfloat getTextAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
229            jlong typefaceHandle,
230            jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint bidiFlags,
231            jfloatArray advances, jint advancesIndex) {
232        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
233        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
234        const jchar* textArray = env->GetStringChars(text, nullptr);
235        jfloat result = doTextAdvances(env, paint, typeface, textArray + contextStart,
236                start - contextStart, end - start, contextEnd - contextStart, bidiFlags,
237                advances, advancesIndex);
238        env->ReleaseStringChars(text, textArray);
239        return result;
240    }
241
242    static jint doTextRunCursor(JNIEnv *env, Paint* paint, Typeface* typeface, const jchar *text,
243            jint start, jint count, jint dir, jint offset, jint opt) {
244        minikin::GraphemeBreak::MoveOpt moveOpt = minikin::GraphemeBreak::MoveOpt(opt);
245        int bidiFlags = dir == 1 ? minikin::kBidi_Force_RTL : minikin::kBidi_Force_LTR;
246        std::unique_ptr<float[]> advancesArray(new float[count]);
247        MinikinUtils::measureText(paint, bidiFlags, typeface, text, start, count, start + count,
248                advancesArray.get());
249        size_t result = minikin::GraphemeBreak::getTextRunCursor(advancesArray.get(), text,
250                start, count, offset, moveOpt);
251        return static_cast<jint>(result);
252    }
253
254    static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle,
255            jlong typefaceHandle, jcharArray text, jint contextStart, jint contextCount, jint dir,
256            jint offset, jint cursorOpt) {
257        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
258        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
259        jchar* textArray = env->GetCharArrayElements(text, nullptr);
260        jint result = doTextRunCursor(env, paint, typeface, textArray,
261                contextStart, contextCount, dir, offset, cursorOpt);
262        env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
263        return result;
264    }
265
266    static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle,
267            jlong typefaceHandle, jstring text, jint contextStart, jint contextEnd, jint dir,
268            jint offset, jint cursorOpt) {
269        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
270        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
271        const jchar* textArray = env->GetStringChars(text, nullptr);
272        jint result = doTextRunCursor(env, paint, typeface, textArray,
273                contextStart, contextEnd - contextStart, dir, offset, cursorOpt);
274        env->ReleaseStringChars(text, textArray);
275        return result;
276    }
277
278    class GetTextFunctor {
279    public:
280        GetTextFunctor(const minikin::Layout& layout, SkPath* path, jfloat x, jfloat y,
281                    Paint* paint, uint16_t* glyphs, SkPoint* pos)
282                : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
283        }
284
285        void operator()(size_t start, size_t end) {
286            for (size_t i = start; i < end; i++) {
287                glyphs[i] = layout.getGlyphId(i);
288                pos[i].fX = x + layout.getX(i);
289                pos[i].fY = y + layout.getY(i);
290            }
291            if (start == 0) {
292                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
293            } else {
294                paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
295                path->addPath(tmpPath);
296            }
297        }
298    private:
299        const minikin::Layout& layout;
300        SkPath* path;
301        jfloat x;
302        jfloat y;
303        Paint* paint;
304        uint16_t* glyphs;
305        SkPoint* pos;
306        SkPath tmpPath;
307    };
308
309    static void getTextPath(JNIEnv* env, Paint* paint, Typeface* typeface, const jchar* text,
310            jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
311        minikin::Layout layout = MinikinUtils::doLayout(
312                paint, bidiFlags, typeface, text, 0, count, count);
313        size_t nGlyphs = layout.nGlyphs();
314        uint16_t* glyphs = new uint16_t[nGlyphs];
315        SkPoint* pos = new SkPoint[nGlyphs];
316
317        x += MinikinUtils::xOffsetForTextAlign(paint, layout);
318        Paint::Align align = paint->getTextAlign();
319        paint->setTextAlign(Paint::kLeft_Align);
320        paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
321        GetTextFunctor f(layout, path, x, y, paint, glyphs, pos);
322        MinikinUtils::forFontRun(layout, paint, f);
323        paint->setTextAlign(align);
324        delete[] glyphs;
325        delete[] pos;
326    }
327
328    static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle,
329            jlong typefaceHandle, jint bidiFlags,
330            jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
331        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
332        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
333        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
334        const jchar* textArray = env->GetCharArrayElements(text, nullptr);
335        getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
336        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
337    }
338
339    static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle,
340            jlong typefaceHandle, jint bidiFlags,
341            jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
342        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
343        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
344        SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
345        const jchar* textArray = env->GetStringChars(text, nullptr);
346        getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
347        env->ReleaseStringChars(text, textArray);
348    }
349
350    static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
351            const Paint& paint, Typeface* typeface, jint bidiFlags) {
352        SkRect  r;
353        SkIRect ir;
354
355        minikin::Layout layout = MinikinUtils::doLayout(
356                &paint, bidiFlags, typeface, text, 0, count, count);
357        minikin::MinikinRect rect;
358        layout.getBounds(&rect);
359        r.fLeft = rect.mLeft;
360        r.fTop = rect.mTop;
361        r.fRight = rect.mRight;
362        r.fBottom = rect.mBottom;
363        r.roundOut(&ir);
364        GraphicsJNI::irect_to_jrect(ir, env, bounds);
365    }
366
367    static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
368                                jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
369        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
370        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
371        const jchar* textArray = env->GetStringChars(text, nullptr);
372        doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
373        env->ReleaseStringChars(text, textArray);
374    }
375
376    static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
377                        jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
378        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
379        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
380        const jchar* textArray = env->GetCharArrayElements(text, nullptr);
381        doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
382        env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
383                                      JNI_ABORT);
384    }
385
386    // Returns true if the given string is exact one pair of regional indicators.
387    static bool isFlag(const jchar* str, size_t length) {
388        const jchar RI_LEAD_SURROGATE = 0xD83C;
389        const jchar RI_TRAIL_SURROGATE_MIN = 0xDDE6;
390        const jchar RI_TRAIL_SURROGATE_MAX = 0xDDFF;
391
392        if (length != 4) {
393            return false;
394        }
395        if (str[0] != RI_LEAD_SURROGATE || str[2] != RI_LEAD_SURROGATE) {
396            return false;
397        }
398        return RI_TRAIL_SURROGATE_MIN <= str[1] && str[1] <= RI_TRAIL_SURROGATE_MAX &&
399            RI_TRAIL_SURROGATE_MIN <= str[3] && str[3] <= RI_TRAIL_SURROGATE_MAX;
400    }
401
402    static jboolean layoutContainsNotdef(const minikin::Layout& layout) {
403        for (size_t i = 0; i < layout.nGlyphs(); i++) {
404            if (layout.getGlyphId(i) == 0) {
405                return true;
406            }
407        }
408        return false;
409    }
410
411    // Don't count glyphs that are the recommended "space" glyph and are zero width.
412    // This logic makes assumptions about HarfBuzz layout, but does correctly handle
413    // cases where ligatures form and zero width space glyphs are left in as
414    // placeholders.
415    static size_t countNonSpaceGlyphs(const minikin::Layout& layout) {
416        size_t count = 0;
417        static unsigned int kSpaceGlyphId = 3;
418        for (size_t i = 0; i < layout.nGlyphs(); i++) {
419            if (layout.getGlyphId(i) != kSpaceGlyphId || layout.getCharAdvance(i) != 0.0) {
420                count++;
421            }
422        }
423        return count;
424    }
425
426    static jboolean hasGlyph(JNIEnv *env, jclass, jlong paintHandle, jlong typefaceHandle,
427            jint bidiFlags, jstring string) {
428        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
429        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
430        ScopedStringChars str(env, string);
431
432        /* Start by rejecting unsupported base code point and variation selector pairs. */
433        size_t nChars = 0;
434        const uint32_t kStartOfString = 0xFFFFFFFF;
435        uint32_t prevCp = kStartOfString;
436        for (size_t i = 0; i < str.size(); i++) {
437            jchar cu = str[i];
438            uint32_t cp = cu;
439            if (U16_IS_TRAIL(cu)) {
440                // invalid UTF-16, unpaired trailing surrogate
441                return false;
442            } else if (U16_IS_LEAD(cu)) {
443                if (i + 1 == str.size()) {
444                    // invalid UTF-16, unpaired leading surrogate at end of string
445                    return false;
446                }
447                i++;
448                jchar cu2 = str[i];
449                if (!U16_IS_TRAIL(cu2)) {
450                    // invalid UTF-16, unpaired leading surrogate
451                    return false;
452                }
453                cp = U16_GET_SUPPLEMENTARY(cu, cu2);
454            }
455
456            if (prevCp != kStartOfString &&
457                ((0xFE00 <= cp && cp <= 0xFE0F) || (0xE0100 <= cp && cp <= 0xE01EF))) {
458                bool hasVS = MinikinUtils::hasVariationSelector(typeface, prevCp, cp);
459                if (!hasVS) {
460                    // No font has a glyph for the code point and variation selector pair.
461                    return false;
462                } else if (nChars == 1 && i + 1 == str.size()) {
463                    // The string is just a codepoint and a VS, we have an authoritative answer
464                    return true;
465                }
466            }
467            nChars++;
468            prevCp = cp;
469        }
470        minikin::Layout layout = MinikinUtils::doLayout(
471                paint, bidiFlags, typeface, str.get(), 0, str.size(), str.size());
472        size_t nGlyphs = countNonSpaceGlyphs(layout);
473        if (nGlyphs != 1 && nChars > 1) {
474            // multiple-character input, and was not a ligature
475            // TODO: handle ZWJ/ZWNJ characters specially so we can detect certain ligatures
476            // in joining scripts, such as Arabic and Mongolian.
477            return false;
478        }
479
480        if (nGlyphs == 0 || layoutContainsNotdef(layout)) {
481            return false;  // The collection doesn't have a glyph.
482        }
483
484        if (nChars == 2 && isFlag(str.get(), str.size())) {
485            // Some font may have a special glyph for unsupported regional indicator pairs.
486            // To return false for this case, need to compare the glyph id with the one of ZZ
487            // since ZZ is reserved for unknown or invalid territory.
488            // U+1F1FF (REGIONAL INDICATOR SYMBOL LETTER Z) is \uD83C\uDDFF in UTF16.
489            static const jchar ZZ_FLAG_STR[] = { 0xD83C, 0xDDFF, 0xD83C, 0xDDFF };
490            minikin::Layout zzLayout = MinikinUtils::doLayout(
491                    paint, bidiFlags, typeface, ZZ_FLAG_STR, 0, 4, 4);
492            if (zzLayout.nGlyphs() != 1 || layoutContainsNotdef(zzLayout)) {
493                // The font collection doesn't have a glyph for unknown flag. Just return true.
494                return true;
495            }
496            return zzLayout.getGlyphId(0) != layout.getGlyphId(0);
497        }
498        return true;
499    }
500
501    static jfloat doRunAdvance(const Paint* paint, Typeface* typeface, const jchar buf[],
502            jint start, jint count, jint bufSize, jboolean isRtl, jint offset) {
503        int bidiFlags = isRtl ? minikin::kBidi_Force_RTL : minikin::kBidi_Force_LTR;
504        if (offset == start + count) {
505            return MinikinUtils::measureText(paint, bidiFlags, typeface, buf, start, count,
506                    bufSize, nullptr);
507        }
508        std::unique_ptr<float[]> advancesArray(new float[count]);
509        MinikinUtils::measureText(paint, bidiFlags, typeface, buf, start, count, bufSize,
510                advancesArray.get());
511        return minikin::getRunAdvance(advancesArray.get(), buf, start, count, offset);
512    }
513
514    static jfloat getRunAdvance___CIIIIZI_F(JNIEnv *env, jclass, jlong paintHandle,
515            jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
516            jint contextEnd, jboolean isRtl, jint offset) {
517        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
518        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
519        jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, nullptr);
520        jfloat result = doRunAdvance(paint, typeface, textArray + contextStart,
521                start - contextStart, end - start, contextEnd - contextStart, isRtl,
522                offset - contextStart);
523        env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
524        return result;
525    }
526
527    static jint doOffsetForAdvance(const Paint* paint, Typeface* typeface, const jchar buf[],
528            jint start, jint count, jint bufSize, jboolean isRtl, jfloat advance) {
529        int bidiFlags = isRtl ? minikin::kBidi_Force_RTL : minikin::kBidi_Force_LTR;
530        std::unique_ptr<float[]> advancesArray(new float[count]);
531        MinikinUtils::measureText(paint, bidiFlags, typeface, buf, start, count, bufSize,
532                advancesArray.get());
533        return minikin::getOffsetForAdvance(advancesArray.get(), buf, start, count, advance);
534    }
535
536    static jint getOffsetForAdvance___CIIIIZF_I(JNIEnv *env, jclass, jlong paintHandle,
537            jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
538            jint contextEnd, jboolean isRtl, jfloat advance) {
539        const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
540        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
541        jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, nullptr);
542        jint result = doOffsetForAdvance(paint, typeface, textArray + contextStart,
543                start - contextStart, end - start, contextEnd - contextStart, isRtl, advance);
544        result += contextStart;
545        env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
546        return result;
547    }
548
549    // ------------------ @FastNative ---------------------------
550
551    static jint setTextLocales(JNIEnv* env, jobject clazz, jlong objHandle, jstring locales) {
552        Paint* obj = reinterpret_cast<Paint*>(objHandle);
553        ScopedUtfChars localesChars(env, locales);
554        jint minikinLangListId = minikin::FontStyle::registerLanguageList(localesChars.c_str());
555        obj->setMinikinLangListId(minikinLangListId);
556        return minikinLangListId;
557    }
558
559    static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) {
560        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
561        if (!settings) {
562            paint->setFontFeatureSettings(std::string());
563        } else {
564            ScopedUtfChars settingsChars(env, settings);
565            paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size()));
566        }
567    }
568
569    static SkScalar getMetricsInternal(jlong paintHandle, jlong typefaceHandle,
570            Paint::FontMetrics *metrics) {
571        const int kElegantTop = 2500;
572        const int kElegantBottom = -1000;
573        const int kElegantAscent = 1900;
574        const int kElegantDescent = -500;
575        const int kElegantLeading = 0;
576        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
577        Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
578        typeface = Typeface::resolveDefault(typeface);
579        minikin::FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle);
580        float saveSkewX = paint->getTextSkewX();
581        bool savefakeBold = paint->isFakeBoldText();
582        MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery);
583        SkScalar spacing = paint->getFontMetrics(metrics);
584        // The populateSkPaint call may have changed fake bold / text skew
585        // because we want to measure with those effects applied, so now
586        // restore the original settings.
587        paint->setTextSkewX(saveSkewX);
588        paint->setFakeBoldText(savefakeBold);
589        if (paint->getFontVariant() == minikin::VARIANT_ELEGANT) {
590            SkScalar size = paint->getTextSize();
591            metrics->fTop = -size * kElegantTop / 2048;
592            metrics->fBottom = -size * kElegantBottom / 2048;
593            metrics->fAscent = -size * kElegantAscent / 2048;
594            metrics->fDescent = -size * kElegantDescent / 2048;
595            metrics->fLeading = size * kElegantLeading / 2048;
596            spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
597        }
598        return spacing;
599    }
600
601    static jfloat getFontMetrics(JNIEnv* env, jobject, jlong paintHandle,
602            jlong typefaceHandle, jobject metricsObj) {
603        Paint::FontMetrics metrics;
604        SkScalar spacing = getMetricsInternal(paintHandle, typefaceHandle, &metrics);
605
606        if (metricsObj) {
607            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
608            env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
609            env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
610            env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
611            env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
612            env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
613        }
614        return SkScalarToFloat(spacing);
615    }
616
617    static jint getFontMetricsInt(JNIEnv* env, jobject, jlong paintHandle,
618            jlong typefaceHandle, jobject metricsObj) {
619        Paint::FontMetrics metrics;
620
621        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
622        int ascent = SkScalarRoundToInt(metrics.fAscent);
623        int descent = SkScalarRoundToInt(metrics.fDescent);
624        int leading = SkScalarRoundToInt(metrics.fLeading);
625
626        if (metricsObj) {
627            SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
628            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
629            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
630            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
631            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
632            env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
633        }
634        return descent - ascent + leading;
635    }
636
637
638    // ------------------ @CriticalNative ---------------------------
639
640    static void reset(jlong objHandle) {
641        Paint* obj = reinterpret_cast<Paint*>(objHandle);
642        obj->reset();
643        defaultSettingsForAndroid(obj);
644    }
645
646    static void assign(jlong dstPaintHandle, jlong srcPaintHandle) {
647        Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle);
648        const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle);
649        *dst = *src;
650    }
651
652    // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
653    static const uint32_t sFilterBitmapFlag = 0x02;
654
655    static jint getFlags(jlong paintHandle) {
656        Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
657        uint32_t result = nativePaint->getFlags();
658        result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away.
659        if (nativePaint->getFilterQuality() != kNone_SkFilterQuality) {
660            result |= sFilterBitmapFlag;
661        }
662        return static_cast<jint>(result);
663    }
664
665    static void setFlags(jlong paintHandle, jint flags) {
666        Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
667        // Instead of modifying 0x02, change the filter level.
668        nativePaint->setFilterQuality(flags & sFilterBitmapFlag
669                ? kLow_SkFilterQuality
670                : kNone_SkFilterQuality);
671        // Don't pass through filter flag, which is no longer stored in paint's flags.
672        flags &= ~sFilterBitmapFlag;
673        // Use the existing value for 0x02.
674        const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag;
675        flags |= existing0x02Flag;
676        nativePaint->setFlags(flags);
677    }
678
679    static jint getHinting(jlong paintHandle) {
680        return reinterpret_cast<Paint*>(paintHandle)->getHinting()
681                == Paint::kNo_Hinting ? 0 : 1;
682    }
683
684    static void setHinting(jlong paintHandle, jint mode) {
685        reinterpret_cast<Paint*>(paintHandle)->setHinting(
686                mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting);
687    }
688
689    static void setAntiAlias(jlong paintHandle, jboolean aa) {
690        reinterpret_cast<Paint*>(paintHandle)->setAntiAlias(aa);
691    }
692
693    static void setLinearText(jlong paintHandle, jboolean linearText) {
694        reinterpret_cast<Paint*>(paintHandle)->setLinearText(linearText);
695    }
696
697    static void setSubpixelText(jlong paintHandle, jboolean subpixelText) {
698        reinterpret_cast<Paint*>(paintHandle)->setSubpixelText(subpixelText);
699    }
700
701    static void setUnderlineText(jlong paintHandle, jboolean underlineText) {
702        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
703        uint32_t flags = paint->getFlags();
704        if (underlineText) {
705            flags |= Paint::kUnderlineText_ReserveFlag;
706        } else {
707            flags &= ~Paint::kUnderlineText_ReserveFlag;
708        }
709        paint->setFlags(flags);
710    }
711
712    static void setStrikeThruText(jlong paintHandle, jboolean strikeThruText) {
713        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
714        uint32_t flags = paint->getFlags();
715        if (strikeThruText) {
716            flags |= Paint::kStrikeThruText_ReserveFlag;
717        } else {
718            flags &= ~Paint::kStrikeThruText_ReserveFlag;
719        }
720        paint->setFlags(flags);
721    }
722
723    static void setFakeBoldText(jlong paintHandle, jboolean fakeBoldText) {
724        reinterpret_cast<Paint*>(paintHandle)->setFakeBoldText(fakeBoldText);
725    }
726
727    static void setFilterBitmap(jlong paintHandle, jboolean filterBitmap) {
728        reinterpret_cast<Paint*>(paintHandle)->setFilterQuality(
729                filterBitmap ? kLow_SkFilterQuality : kNone_SkFilterQuality);
730    }
731
732    static void setDither(jlong paintHandle, jboolean dither) {
733        reinterpret_cast<Paint*>(paintHandle)->setDither(dither);
734    }
735
736    static jint getStyle(jlong objHandle) {
737        Paint* obj = reinterpret_cast<Paint*>(objHandle);
738        return static_cast<jint>(obj->getStyle());
739    }
740
741    static void setStyle(jlong objHandle, jint styleHandle) {
742        Paint* obj = reinterpret_cast<Paint*>(objHandle);
743        Paint::Style style = static_cast<Paint::Style>(styleHandle);
744        obj->setStyle(style);
745    }
746
747    static jint getColor(jlong paintHandle) {
748        int color;
749        color = reinterpret_cast<Paint*>(paintHandle)->getColor();
750        return static_cast<jint>(color);
751    }
752
753    static jint getAlpha(jlong paintHandle) {
754        int alpha;
755        alpha = reinterpret_cast<Paint*>(paintHandle)->getAlpha();
756        return static_cast<jint>(alpha);
757    }
758
759    static void setColor(jlong paintHandle, jint color) {
760        reinterpret_cast<Paint*>(paintHandle)->setColor(color);
761    }
762
763    static void setAlpha(jlong paintHandle, jint a) {
764        reinterpret_cast<Paint*>(paintHandle)->setAlpha(a);
765    }
766
767    static jfloat getStrokeWidth(jlong paintHandle) {
768        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeWidth());
769    }
770
771    static void setStrokeWidth(jlong paintHandle, jfloat width) {
772        reinterpret_cast<Paint*>(paintHandle)->setStrokeWidth(width);
773    }
774
775    static jfloat getStrokeMiter(jlong paintHandle) {
776        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeMiter());
777    }
778
779    static void setStrokeMiter(jlong paintHandle, jfloat miter) {
780        reinterpret_cast<Paint*>(paintHandle)->setStrokeMiter(miter);
781    }
782
783    static jint getStrokeCap(jlong objHandle) {
784        Paint* obj = reinterpret_cast<Paint*>(objHandle);
785        return static_cast<jint>(obj->getStrokeCap());
786    }
787
788    static void setStrokeCap(jlong objHandle, jint capHandle) {
789        Paint* obj = reinterpret_cast<Paint*>(objHandle);
790        Paint::Cap cap = static_cast<Paint::Cap>(capHandle);
791        obj->setStrokeCap(cap);
792    }
793
794    static jint getStrokeJoin(jlong objHandle) {
795        Paint* obj = reinterpret_cast<Paint*>(objHandle);
796        return static_cast<jint>(obj->getStrokeJoin());
797    }
798
799    static void setStrokeJoin(jlong objHandle, jint joinHandle) {
800        Paint* obj = reinterpret_cast<Paint*>(objHandle);
801        Paint::Join join = (Paint::Join) joinHandle;
802        obj->setStrokeJoin(join);
803    }
804
805    static jboolean getFillPath(jlong objHandle, jlong srcHandle, jlong dstHandle) {
806        Paint* obj = reinterpret_cast<Paint*>(objHandle);
807        SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
808        SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
809        return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
810    }
811
812    static jlong setShader(jlong objHandle, jlong shaderHandle) {
813        Paint* obj = reinterpret_cast<Paint*>(objHandle);
814        SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
815        obj->setShader(sk_ref_sp(shader));
816        return reinterpret_cast<jlong>(obj->getShader());
817    }
818
819    static jlong setColorFilter(jlong objHandle, jlong filterHandle) {
820        Paint* obj = reinterpret_cast<Paint *>(objHandle);
821        SkColorFilter* filter  = reinterpret_cast<SkColorFilter *>(filterHandle);
822        obj->setColorFilter(sk_ref_sp(filter));
823        return reinterpret_cast<jlong>(obj->getColorFilter());
824    }
825
826    static void setXfermode(jlong paintHandle, jint xfermodeHandle) {
827        // validate that the Java enum values match our expectations
828        static_assert(0 == static_cast<int>(SkBlendMode::kClear), "xfermode_mismatch");
829        static_assert(1 == static_cast<int>(SkBlendMode::kSrc), "xfermode_mismatch");
830        static_assert(2 == static_cast<int>(SkBlendMode::kDst), "xfermode_mismatch");
831        static_assert(3 == static_cast<int>(SkBlendMode::kSrcOver), "xfermode_mismatch");
832        static_assert(4 == static_cast<int>(SkBlendMode::kDstOver), "xfermode_mismatch");
833        static_assert(5 == static_cast<int>(SkBlendMode::kSrcIn), "xfermode_mismatch");
834        static_assert(6 == static_cast<int>(SkBlendMode::kDstIn), "xfermode_mismatch");
835        static_assert(7 == static_cast<int>(SkBlendMode::kSrcOut), "xfermode_mismatch");
836        static_assert(8 == static_cast<int>(SkBlendMode::kDstOut), "xfermode_mismatch");
837        static_assert(9 == static_cast<int>(SkBlendMode::kSrcATop), "xfermode_mismatch");
838        static_assert(10 == static_cast<int>(SkBlendMode::kDstATop), "xfermode_mismatch");
839        static_assert(11 == static_cast<int>(SkBlendMode::kXor), "xfermode_mismatch");
840        static_assert(16 == static_cast<int>(SkBlendMode::kDarken), "xfermode_mismatch");
841        static_assert(17 == static_cast<int>(SkBlendMode::kLighten), "xfermode_mismatch");
842        static_assert(13 == static_cast<int>(SkBlendMode::kModulate), "xfermode_mismatch");
843        static_assert(14 == static_cast<int>(SkBlendMode::kScreen), "xfermode_mismatch");
844        static_assert(12 == static_cast<int>(SkBlendMode::kPlus), "xfermode_mismatch");
845        static_assert(15 == static_cast<int>(SkBlendMode::kOverlay), "xfermode_mismatch");
846
847        SkBlendMode mode = static_cast<SkBlendMode>(xfermodeHandle);
848        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
849        paint->setBlendMode(mode);
850    }
851
852    static jlong setPathEffect(jlong objHandle, jlong effectHandle) {
853        Paint* obj = reinterpret_cast<Paint*>(objHandle);
854        SkPathEffect* effect  = reinterpret_cast<SkPathEffect*>(effectHandle);
855        obj->setPathEffect(sk_ref_sp(effect));
856        return reinterpret_cast<jlong>(obj->getPathEffect());
857    }
858
859    static jlong setMaskFilter(jlong objHandle, jlong maskfilterHandle) {
860        Paint* obj = reinterpret_cast<Paint*>(objHandle);
861        SkMaskFilter* maskfilter  = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
862        obj->setMaskFilter(sk_ref_sp(maskfilter));
863        return reinterpret_cast<jlong>(obj->getMaskFilter());
864    }
865
866    static jlong setTypeface(jlong objHandle, jlong typefaceHandle) {
867        // TODO: in Paint refactoring, set typeface on android Paint, not Paint
868        return 0;
869    }
870
871    static jint getTextAlign(jlong objHandle) {
872        Paint* obj = reinterpret_cast<Paint*>(objHandle);
873        return static_cast<jint>(obj->getTextAlign());
874    }
875
876    static void setTextAlign(jlong objHandle, jint alignHandle) {
877        Paint* obj = reinterpret_cast<Paint*>(objHandle);
878        Paint::Align align = static_cast<Paint::Align>(alignHandle);
879        obj->setTextAlign(align);
880    }
881
882    static void setTextLocalesByMinikinLangListId(jlong objHandle,
883            jint minikinLangListId) {
884        Paint* obj = reinterpret_cast<Paint*>(objHandle);
885        obj->setMinikinLangListId(minikinLangListId);
886    }
887
888    static jboolean isElegantTextHeight(jlong paintHandle) {
889        Paint* obj = reinterpret_cast<Paint*>(paintHandle);
890        return obj->getFontVariant() == minikin::VARIANT_ELEGANT;
891    }
892
893    static void setElegantTextHeight(jlong paintHandle, jboolean aa) {
894        Paint* obj = reinterpret_cast<Paint*>(paintHandle);
895        obj->setFontVariant(aa ? minikin::VARIANT_ELEGANT : minikin::VARIANT_DEFAULT);
896    }
897
898    static jfloat getTextSize(jlong paintHandle) {
899        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSize());
900    }
901
902    static void setTextSize(jlong paintHandle, jfloat textSize) {
903        reinterpret_cast<Paint*>(paintHandle)->setTextSize(textSize);
904    }
905
906    static jfloat getTextScaleX(jlong paintHandle) {
907        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextScaleX());
908    }
909
910    static void setTextScaleX(jlong paintHandle, jfloat scaleX) {
911        reinterpret_cast<Paint*>(paintHandle)->setTextScaleX(scaleX);
912    }
913
914    static jfloat getTextSkewX(jlong paintHandle) {
915        return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSkewX());
916    }
917
918    static void setTextSkewX(jlong paintHandle, jfloat skewX) {
919        reinterpret_cast<Paint*>(paintHandle)->setTextSkewX(skewX);
920    }
921
922    static jfloat getLetterSpacing(jlong paintHandle) {
923        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
924        return paint->getLetterSpacing();
925    }
926
927    static void setLetterSpacing(jlong paintHandle, jfloat letterSpacing) {
928        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
929        paint->setLetterSpacing(letterSpacing);
930    }
931
932    static jfloat getWordSpacing(jlong paintHandle) {
933        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
934        return paint->getWordSpacing();
935    }
936
937    static void setWordSpacing(jlong paintHandle, jfloat wordSpacing) {
938        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
939        paint->setWordSpacing(wordSpacing);
940    }
941
942    static jint getHyphenEdit(jlong paintHandle, jint hyphen) {
943        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
944        return paint->getHyphenEdit();
945    }
946
947    static void setHyphenEdit(jlong paintHandle, jint hyphen) {
948        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
949        paint->setHyphenEdit((uint32_t)hyphen);
950    }
951
952    static jfloat ascent(jlong paintHandle, jlong typefaceHandle) {
953        Paint::FontMetrics metrics;
954        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
955        return SkScalarToFloat(metrics.fAscent);
956    }
957
958    static jfloat descent(jlong paintHandle, jlong typefaceHandle) {
959        Paint::FontMetrics metrics;
960        getMetricsInternal(paintHandle, typefaceHandle, &metrics);
961        return SkScalarToFloat(metrics.fDescent);
962    }
963
964    static void setShadowLayer(jlong paintHandle, jfloat radius,
965                               jfloat dx, jfloat dy, jint color) {
966        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
967        if (radius <= 0) {
968            paint->setLooper(nullptr);
969        }
970        else {
971            SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
972            paint->setLooper(SkBlurDrawLooper::Make((SkColor)color, sigma, dx, dy));
973        }
974    }
975
976    static jboolean hasShadowLayer(jlong paintHandle) {
977        Paint* paint = reinterpret_cast<Paint*>(paintHandle);
978        return paint->getLooper() && paint->getLooper()->asABlurShadow(nullptr);
979    }
980
981}; // namespace PaintGlue
982
983static const JNINativeMethod methods[] = {
984    {"nGetNativeFinalizer", "()J", (void*) PaintGlue::getNativeFinalizer},
985    {"nInit","()J", (void*) PaintGlue::init},
986    {"nInitWithPaint","(J)J", (void*) PaintGlue::initWithPaint},
987    {"nBreakText","(JJ[CIIFI[F)I", (void*) PaintGlue::breakTextC},
988    {"nBreakText","(JJLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS},
989    {"nGetTextAdvances","(JJ[CIIIII[FI)F",
990            (void*) PaintGlue::getTextAdvances___CIIIII_FI},
991    {"nGetTextAdvances","(JJLjava/lang/String;IIIII[FI)F",
992            (void*) PaintGlue::getTextAdvances__StringIIIII_FI},
993
994    {"nGetTextRunCursor", "(JJ[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C},
995    {"nGetTextRunCursor", "(JJLjava/lang/String;IIIII)I",
996            (void*) PaintGlue::getTextRunCursor__String},
997    {"nGetTextPath", "(JJI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C},
998    {"nGetTextPath", "(JJILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String},
999    {"nGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V",
1000            (void*) PaintGlue::getStringBounds },
1001    {"nGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V",
1002            (void*) PaintGlue::getCharArrayBounds },
1003    {"nHasGlyph", "(JJILjava/lang/String;)Z", (void*) PaintGlue::hasGlyph },
1004    {"nGetRunAdvance", "(JJ[CIIIIZI)F", (void*) PaintGlue::getRunAdvance___CIIIIZI_F},
1005    {"nGetOffsetForAdvance", "(JJ[CIIIIZF)I",
1006            (void*) PaintGlue::getOffsetForAdvance___CIIIIZF_I},
1007
1008    // --------------- @FastNative ----------------------
1009
1010    {"nSetTextLocales","(JLjava/lang/String;)I", (void*) PaintGlue::setTextLocales},
1011    {"nSetFontFeatureSettings","(JLjava/lang/String;)V",
1012                (void*) PaintGlue::setFontFeatureSettings},
1013    {"nGetFontMetrics", "(JJLandroid/graphics/Paint$FontMetrics;)F",
1014                (void*)PaintGlue::getFontMetrics},
1015    {"nGetFontMetricsInt", "(JJLandroid/graphics/Paint$FontMetricsInt;)I",
1016            (void*)PaintGlue::getFontMetricsInt},
1017
1018    // --------------- @CriticalNative ------------------
1019
1020    {"nReset","(J)V", (void*) PaintGlue::reset},
1021    {"nSet","(JJ)V", (void*) PaintGlue::assign},
1022    {"nGetFlags","(J)I", (void*) PaintGlue::getFlags},
1023    {"nSetFlags","(JI)V", (void*) PaintGlue::setFlags},
1024    {"nGetHinting","(J)I", (void*) PaintGlue::getHinting},
1025    {"nSetHinting","(JI)V", (void*) PaintGlue::setHinting},
1026    {"nSetAntiAlias","(JZ)V", (void*) PaintGlue::setAntiAlias},
1027    {"nSetSubpixelText","(JZ)V", (void*) PaintGlue::setSubpixelText},
1028    {"nSetLinearText","(JZ)V", (void*) PaintGlue::setLinearText},
1029    {"nSetUnderlineText","(JZ)V", (void*) PaintGlue::setUnderlineText},
1030    {"nSetStrikeThruText","(JZ)V", (void*) PaintGlue::setStrikeThruText},
1031    {"nSetFakeBoldText","(JZ)V", (void*) PaintGlue::setFakeBoldText},
1032    {"nSetFilterBitmap","(JZ)V", (void*) PaintGlue::setFilterBitmap},
1033    {"nSetDither","(JZ)V", (void*) PaintGlue::setDither},
1034    {"nGetStyle","(J)I", (void*) PaintGlue::getStyle},
1035    {"nSetStyle","(JI)V", (void*) PaintGlue::setStyle},
1036    {"nGetColor","(J)I", (void*) PaintGlue::getColor},
1037    {"nSetColor","(JI)V", (void*) PaintGlue::setColor},
1038    {"nGetAlpha","(J)I", (void*) PaintGlue::getAlpha},
1039    {"nSetAlpha","(JI)V", (void*) PaintGlue::setAlpha},
1040    {"nGetStrokeWidth","(J)F", (void*) PaintGlue::getStrokeWidth},
1041    {"nSetStrokeWidth","(JF)V", (void*) PaintGlue::setStrokeWidth},
1042    {"nGetStrokeMiter","(J)F", (void*) PaintGlue::getStrokeMiter},
1043    {"nSetStrokeMiter","(JF)V", (void*) PaintGlue::setStrokeMiter},
1044    {"nGetStrokeCap","(J)I", (void*) PaintGlue::getStrokeCap},
1045    {"nSetStrokeCap","(JI)V", (void*) PaintGlue::setStrokeCap},
1046    {"nGetStrokeJoin","(J)I", (void*) PaintGlue::getStrokeJoin},
1047    {"nSetStrokeJoin","(JI)V", (void*) PaintGlue::setStrokeJoin},
1048    {"nGetFillPath","(JJJ)Z", (void*) PaintGlue::getFillPath},
1049    {"nSetShader","(JJ)J", (void*) PaintGlue::setShader},
1050    {"nSetColorFilter","(JJ)J", (void*) PaintGlue::setColorFilter},
1051    {"nSetXfermode","(JI)V", (void*) PaintGlue::setXfermode},
1052    {"nSetPathEffect","(JJ)J", (void*) PaintGlue::setPathEffect},
1053    {"nSetMaskFilter","(JJ)J", (void*) PaintGlue::setMaskFilter},
1054    {"nSetTypeface","(JJ)J", (void*) PaintGlue::setTypeface},
1055    {"nGetTextAlign","(J)I", (void*) PaintGlue::getTextAlign},
1056    {"nSetTextAlign","(JI)V", (void*) PaintGlue::setTextAlign},
1057    {"nSetTextLocalesByMinikinLangListId","(JI)V",
1058            (void*) PaintGlue::setTextLocalesByMinikinLangListId},
1059    {"nIsElegantTextHeight","(J)Z", (void*) PaintGlue::isElegantTextHeight},
1060    {"nSetElegantTextHeight","(JZ)V", (void*) PaintGlue::setElegantTextHeight},
1061    {"nGetTextSize","(J)F", (void*) PaintGlue::getTextSize},
1062    {"nSetTextSize","(JF)V", (void*) PaintGlue::setTextSize},
1063    {"nGetTextScaleX","(J)F", (void*) PaintGlue::getTextScaleX},
1064    {"nSetTextScaleX","(JF)V", (void*) PaintGlue::setTextScaleX},
1065    {"nGetTextSkewX","(J)F", (void*) PaintGlue::getTextSkewX},
1066    {"nSetTextSkewX","(JF)V", (void*) PaintGlue::setTextSkewX},
1067    {"nGetLetterSpacing","(J)F", (void*) PaintGlue::getLetterSpacing},
1068    {"nSetLetterSpacing","(JF)V", (void*) PaintGlue::setLetterSpacing},
1069    {"nGetWordSpacing","(J)F", (void*) PaintGlue::getWordSpacing},
1070    {"nSetWordSpacing","(JF)V", (void*) PaintGlue::setWordSpacing},
1071    {"nGetHyphenEdit", "(J)I", (void*) PaintGlue::getHyphenEdit},
1072    {"nSetHyphenEdit", "(JI)V", (void*) PaintGlue::setHyphenEdit},
1073    {"nAscent","(JJ)F", (void*) PaintGlue::ascent},
1074    {"nDescent","(JJ)F", (void*) PaintGlue::descent},
1075    {"nSetShadowLayer", "(JFFFI)V", (void*)PaintGlue::setShadowLayer},
1076    {"nHasShadowLayer", "(J)Z", (void*)PaintGlue::hasShadowLayer}
1077};
1078
1079int register_android_graphics_Paint(JNIEnv* env) {
1080    gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics");
1081    gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class);
1082
1083    gFontMetrics_fieldID.top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F");
1084    gFontMetrics_fieldID.ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F");
1085    gFontMetrics_fieldID.descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F");
1086    gFontMetrics_fieldID.bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F");
1087    gFontMetrics_fieldID.leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F");
1088
1089    gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt");
1090    gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class);
1091
1092    gFontMetricsInt_fieldID.top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I");
1093    gFontMetricsInt_fieldID.ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I");
1094    gFontMetricsInt_fieldID.descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I");
1095    gFontMetricsInt_fieldID.bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I");
1096    gFontMetricsInt_fieldID.leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I");
1097
1098    return RegisterMethodsOrDie(env, "android/graphics/Paint", methods, NELEM(methods));
1099}
1100
1101}
1102