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
38 #include <minikin/GraphemeBreak.h>
39 #include "MinikinSkia.h"
40 #include "MinikinUtils.h"
41 #include "Paint.h"
42 #include "TypefaceImpl.h"
43
44 // temporary for debugging
45 #include <Caches.h>
46 #include <utils/Log.h>
47
48 namespace android {
49
50 struct JMetricsID {
51 jfieldID top;
52 jfieldID ascent;
53 jfieldID descent;
54 jfieldID bottom;
55 jfieldID leading;
56 };
57
58 static jclass gFontMetrics_class;
59 static JMetricsID gFontMetrics_fieldID;
60
61 static jclass gFontMetricsInt_class;
62 static JMetricsID gFontMetricsInt_fieldID;
63
defaultSettingsForAndroid(Paint * paint)64 static void defaultSettingsForAndroid(Paint* paint) {
65 // GlyphID encoding is required because we are using Harfbuzz shaping
66 paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
67 }
68
69 class PaintGlue {
70 public:
71 enum MoveOpt {
72 AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
73 };
74
finalizer(JNIEnv * env,jobject clazz,jlong objHandle)75 static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
76 Paint* obj = reinterpret_cast<Paint*>(objHandle);
77 delete obj;
78 }
79
init(JNIEnv * env,jobject clazz)80 static jlong init(JNIEnv* env, jobject clazz) {
81 Paint* obj = new Paint();
82 defaultSettingsForAndroid(obj);
83 return reinterpret_cast<jlong>(obj);
84 }
85
initWithPaint(JNIEnv * env,jobject clazz,jlong paintHandle)86 static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
87 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
88 Paint* obj = new Paint(*paint);
89 return reinterpret_cast<jlong>(obj);
90 }
91
reset(JNIEnv * env,jobject clazz,jlong objHandle)92 static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
93 Paint* obj = reinterpret_cast<Paint*>(objHandle);
94 obj->reset();
95 defaultSettingsForAndroid(obj);
96 }
97
assign(JNIEnv * env,jobject clazz,jlong dstPaintHandle,jlong srcPaintHandle)98 static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) {
99 Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle);
100 const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle);
101 *dst = *src;
102 }
103
104 // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
105 static const uint32_t sFilterBitmapFlag = 0x02;
106
getFlags(JNIEnv * env,jobject paint)107 static jint getFlags(JNIEnv* env, jobject paint) {
108 NPE_CHECK_RETURN_ZERO(env, paint);
109 Paint* nativePaint = GraphicsJNI::getNativePaint(env, paint);
110 uint32_t result = nativePaint->getFlags();
111 result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away.
112 if (nativePaint->getFilterLevel() != Paint::kNone_FilterLevel) {
113 result |= sFilterBitmapFlag;
114 }
115 return static_cast<jint>(result);
116 }
117
setFlags(JNIEnv * env,jobject paint,jint flags)118 static void setFlags(JNIEnv* env, jobject paint, jint flags) {
119 NPE_CHECK_RETURN_VOID(env, paint);
120 Paint* nativePaint = GraphicsJNI::getNativePaint(env, paint);
121 // Instead of modifying 0x02, change the filter level.
122 nativePaint->setFilterLevel(flags & sFilterBitmapFlag
123 ? Paint::kLow_FilterLevel
124 : Paint::kNone_FilterLevel);
125 // Don't pass through filter flag, which is no longer stored in paint's flags.
126 flags &= ~sFilterBitmapFlag;
127 // Use the existing value for 0x02.
128 const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag;
129 flags |= existing0x02Flag;
130 nativePaint->setFlags(flags);
131 }
132
getHinting(JNIEnv * env,jobject paint)133 static jint getHinting(JNIEnv* env, jobject paint) {
134 NPE_CHECK_RETURN_ZERO(env, paint);
135 return GraphicsJNI::getNativePaint(env, paint)->getHinting()
136 == Paint::kNo_Hinting ? 0 : 1;
137 }
138
setHinting(JNIEnv * env,jobject paint,jint mode)139 static void setHinting(JNIEnv* env, jobject paint, jint mode) {
140 NPE_CHECK_RETURN_VOID(env, paint);
141 GraphicsJNI::getNativePaint(env, paint)->setHinting(
142 mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting);
143 }
144
setAntiAlias(JNIEnv * env,jobject paint,jboolean aa)145 static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) {
146 NPE_CHECK_RETURN_VOID(env, paint);
147 GraphicsJNI::getNativePaint(env, paint)->setAntiAlias(aa);
148 }
149
setLinearText(JNIEnv * env,jobject paint,jboolean linearText)150 static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) {
151 NPE_CHECK_RETURN_VOID(env, paint);
152 GraphicsJNI::getNativePaint(env, paint)->setLinearText(linearText);
153 }
154
setSubpixelText(JNIEnv * env,jobject paint,jboolean subpixelText)155 static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) {
156 NPE_CHECK_RETURN_VOID(env, paint);
157 GraphicsJNI::getNativePaint(env, paint)->setSubpixelText(subpixelText);
158 }
159
setUnderlineText(JNIEnv * env,jobject paint,jboolean underlineText)160 static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) {
161 NPE_CHECK_RETURN_VOID(env, paint);
162 GraphicsJNI::getNativePaint(env, paint)->setUnderlineText(underlineText);
163 }
164
setStrikeThruText(JNIEnv * env,jobject paint,jboolean strikeThruText)165 static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) {
166 NPE_CHECK_RETURN_VOID(env, paint);
167 GraphicsJNI::getNativePaint(env, paint)->setStrikeThruText(strikeThruText);
168 }
169
setFakeBoldText(JNIEnv * env,jobject paint,jboolean fakeBoldText)170 static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) {
171 NPE_CHECK_RETURN_VOID(env, paint);
172 GraphicsJNI::getNativePaint(env, paint)->setFakeBoldText(fakeBoldText);
173 }
174
setFilterBitmap(JNIEnv * env,jobject paint,jboolean filterBitmap)175 static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) {
176 NPE_CHECK_RETURN_VOID(env, paint);
177 GraphicsJNI::getNativePaint(env, paint)->setFilterLevel(
178 filterBitmap ? Paint::kLow_FilterLevel : Paint::kNone_FilterLevel);
179 }
180
setDither(JNIEnv * env,jobject paint,jboolean dither)181 static void setDither(JNIEnv* env, jobject paint, jboolean dither) {
182 NPE_CHECK_RETURN_VOID(env, paint);
183 GraphicsJNI::getNativePaint(env, paint)->setDither(dither);
184 }
185
getStyle(JNIEnv * env,jobject clazz,jlong objHandle)186 static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) {
187 Paint* obj = reinterpret_cast<Paint*>(objHandle);
188 return static_cast<jint>(obj->getStyle());
189 }
190
setStyle(JNIEnv * env,jobject clazz,jlong objHandle,jint styleHandle)191 static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) {
192 Paint* obj = reinterpret_cast<Paint*>(objHandle);
193 Paint::Style style = static_cast<Paint::Style>(styleHandle);
194 obj->setStyle(style);
195 }
196
getColor(JNIEnv * env,jobject paint)197 static jint getColor(JNIEnv* env, jobject paint) {
198 NPE_CHECK_RETURN_ZERO(env, paint);
199 int color;
200 color = GraphicsJNI::getNativePaint(env, paint)->getColor();
201 return static_cast<jint>(color);
202 }
203
getAlpha(JNIEnv * env,jobject paint)204 static jint getAlpha(JNIEnv* env, jobject paint) {
205 NPE_CHECK_RETURN_ZERO(env, paint);
206 int alpha;
207 alpha = GraphicsJNI::getNativePaint(env, paint)->getAlpha();
208 return static_cast<jint>(alpha);
209 }
210
setColor(JNIEnv * env,jobject paint,jint color)211 static void setColor(JNIEnv* env, jobject paint, jint color) {
212 NPE_CHECK_RETURN_VOID(env, paint);
213 GraphicsJNI::getNativePaint(env, paint)->setColor(color);
214 }
215
setAlpha(JNIEnv * env,jobject paint,jint a)216 static void setAlpha(JNIEnv* env, jobject paint, jint a) {
217 NPE_CHECK_RETURN_VOID(env, paint);
218 GraphicsJNI::getNativePaint(env, paint)->setAlpha(a);
219 }
220
getStrokeWidth(JNIEnv * env,jobject paint)221 static jfloat getStrokeWidth(JNIEnv* env, jobject paint) {
222 NPE_CHECK_RETURN_ZERO(env, paint);
223 return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeWidth());
224 }
225
setStrokeWidth(JNIEnv * env,jobject paint,jfloat width)226 static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) {
227 NPE_CHECK_RETURN_VOID(env, paint);
228 GraphicsJNI::getNativePaint(env, paint)->setStrokeWidth(width);
229 }
230
getStrokeMiter(JNIEnv * env,jobject paint)231 static jfloat getStrokeMiter(JNIEnv* env, jobject paint) {
232 NPE_CHECK_RETURN_ZERO(env, paint);
233 return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeMiter());
234 }
235
setStrokeMiter(JNIEnv * env,jobject paint,jfloat miter)236 static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) {
237 NPE_CHECK_RETURN_VOID(env, paint);
238 GraphicsJNI::getNativePaint(env, paint)->setStrokeMiter(miter);
239 }
240
getStrokeCap(JNIEnv * env,jobject clazz,jlong objHandle)241 static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) {
242 Paint* obj = reinterpret_cast<Paint*>(objHandle);
243 return static_cast<jint>(obj->getStrokeCap());
244 }
245
setStrokeCap(JNIEnv * env,jobject clazz,jlong objHandle,jint capHandle)246 static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) {
247 Paint* obj = reinterpret_cast<Paint*>(objHandle);
248 Paint::Cap cap = static_cast<Paint::Cap>(capHandle);
249 obj->setStrokeCap(cap);
250 }
251
getStrokeJoin(JNIEnv * env,jobject clazz,jlong objHandle)252 static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) {
253 Paint* obj = reinterpret_cast<Paint*>(objHandle);
254 return static_cast<jint>(obj->getStrokeJoin());
255 }
256
setStrokeJoin(JNIEnv * env,jobject clazz,jlong objHandle,jint joinHandle)257 static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) {
258 Paint* obj = reinterpret_cast<Paint*>(objHandle);
259 Paint::Join join = (Paint::Join) joinHandle;
260 obj->setStrokeJoin(join);
261 }
262
getFillPath(JNIEnv * env,jobject clazz,jlong objHandle,jlong srcHandle,jlong dstHandle)263 static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) {
264 Paint* obj = reinterpret_cast<Paint*>(objHandle);
265 SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
266 SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
267 return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
268 }
269
setShader(JNIEnv * env,jobject clazz,jlong objHandle,jlong shaderHandle)270 static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) {
271 Paint* obj = reinterpret_cast<Paint*>(objHandle);
272 SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
273 return reinterpret_cast<jlong>(obj->setShader(shader));
274 }
275
setColorFilter(JNIEnv * env,jobject clazz,jlong objHandle,jlong filterHandle)276 static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) {
277 Paint* obj = reinterpret_cast<Paint *>(objHandle);
278 SkColorFilter* filter = reinterpret_cast<SkColorFilter *>(filterHandle);
279 return reinterpret_cast<jlong>(obj->setColorFilter(filter));
280 }
281
setXfermode(JNIEnv * env,jobject clazz,jlong objHandle,jlong xfermodeHandle)282 static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) {
283 Paint* obj = reinterpret_cast<Paint*>(objHandle);
284 SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle);
285 return reinterpret_cast<jlong>(obj->setXfermode(xfermode));
286 }
287
setPathEffect(JNIEnv * env,jobject clazz,jlong objHandle,jlong effectHandle)288 static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) {
289 Paint* obj = reinterpret_cast<Paint*>(objHandle);
290 SkPathEffect* effect = reinterpret_cast<SkPathEffect*>(effectHandle);
291 return reinterpret_cast<jlong>(obj->setPathEffect(effect));
292 }
293
setMaskFilter(JNIEnv * env,jobject clazz,jlong objHandle,jlong maskfilterHandle)294 static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) {
295 Paint* obj = reinterpret_cast<Paint*>(objHandle);
296 SkMaskFilter* maskfilter = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
297 return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter));
298 }
299
setTypeface(JNIEnv * env,jobject clazz,jlong objHandle,jlong typefaceHandle)300 static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) {
301 // TODO: in Paint refactoring, set typeface on android Paint, not Paint
302 return NULL;
303 }
304
setRasterizer(JNIEnv * env,jobject clazz,jlong objHandle,jlong rasterizerHandle)305 static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) {
306 Paint* obj = reinterpret_cast<Paint*>(objHandle);
307 SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle));
308 return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer));
309 }
310
getTextAlign(JNIEnv * env,jobject clazz,jlong objHandle)311 static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) {
312 Paint* obj = reinterpret_cast<Paint*>(objHandle);
313 return static_cast<jint>(obj->getTextAlign());
314 }
315
setTextAlign(JNIEnv * env,jobject clazz,jlong objHandle,jint alignHandle)316 static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) {
317 Paint* obj = reinterpret_cast<Paint*>(objHandle);
318 Paint::Align align = static_cast<Paint::Align>(alignHandle);
319 obj->setTextAlign(align);
320 }
321
322 // generate bcp47 identifier for the supplied locale
toLanguageTag(char * output,size_t outSize,const char * locale)323 static void toLanguageTag(char* output, size_t outSize,
324 const char* locale) {
325 if (output == NULL || outSize <= 0) {
326 return;
327 }
328 if (locale == NULL) {
329 output[0] = '\0';
330 return;
331 }
332 char canonicalChars[ULOC_FULLNAME_CAPACITY];
333 UErrorCode uErr = U_ZERO_ERROR;
334 uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY,
335 &uErr);
336 if (U_SUCCESS(uErr)) {
337 char likelyChars[ULOC_FULLNAME_CAPACITY];
338 uErr = U_ZERO_ERROR;
339 uloc_addLikelySubtags(canonicalChars, likelyChars,
340 ULOC_FULLNAME_CAPACITY, &uErr);
341 if (U_SUCCESS(uErr)) {
342 uErr = U_ZERO_ERROR;
343 uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr);
344 if (U_SUCCESS(uErr)) {
345 return;
346 } else {
347 ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars,
348 u_errorName(uErr));
349 }
350 } else {
351 ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s",
352 canonicalChars, u_errorName(uErr));
353 }
354 } else {
355 ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale,
356 u_errorName(uErr));
357 }
358 // unable to build a proper language identifier
359 output[0] = '\0';
360 }
361
setTextLocale(JNIEnv * env,jobject clazz,jlong objHandle,jstring locale)362 static void setTextLocale(JNIEnv* env, jobject clazz, jlong objHandle, jstring locale) {
363 Paint* obj = reinterpret_cast<Paint*>(objHandle);
364 ScopedUtfChars localeChars(env, locale);
365 char langTag[ULOC_FULLNAME_CAPACITY];
366 toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, localeChars.c_str());
367
368 obj->setTextLocale(langTag);
369 }
370
isElegantTextHeight(JNIEnv * env,jobject paint)371 static jboolean isElegantTextHeight(JNIEnv* env, jobject paint) {
372 NPE_CHECK_RETURN_ZERO(env, paint);
373 Paint* obj = GraphicsJNI::getNativePaint(env, paint);
374 return obj->getFontVariant() == VARIANT_ELEGANT;
375 }
376
setElegantTextHeight(JNIEnv * env,jobject paint,jboolean aa)377 static void setElegantTextHeight(JNIEnv* env, jobject paint, jboolean aa) {
378 NPE_CHECK_RETURN_VOID(env, paint);
379 Paint* obj = GraphicsJNI::getNativePaint(env, paint);
380 obj->setFontVariant(aa ? VARIANT_ELEGANT : VARIANT_DEFAULT);
381 }
382
getTextSize(JNIEnv * env,jobject paint)383 static jfloat getTextSize(JNIEnv* env, jobject paint) {
384 NPE_CHECK_RETURN_ZERO(env, paint);
385 return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSize());
386 }
387
setTextSize(JNIEnv * env,jobject paint,jfloat textSize)388 static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) {
389 NPE_CHECK_RETURN_VOID(env, paint);
390 GraphicsJNI::getNativePaint(env, paint)->setTextSize(textSize);
391 }
392
getTextScaleX(JNIEnv * env,jobject paint)393 static jfloat getTextScaleX(JNIEnv* env, jobject paint) {
394 NPE_CHECK_RETURN_ZERO(env, paint);
395 return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextScaleX());
396 }
397
setTextScaleX(JNIEnv * env,jobject paint,jfloat scaleX)398 static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) {
399 NPE_CHECK_RETURN_VOID(env, paint);
400 GraphicsJNI::getNativePaint(env, paint)->setTextScaleX(scaleX);
401 }
402
getTextSkewX(JNIEnv * env,jobject paint)403 static jfloat getTextSkewX(JNIEnv* env, jobject paint) {
404 NPE_CHECK_RETURN_ZERO(env, paint);
405 return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSkewX());
406 }
407
setTextSkewX(JNIEnv * env,jobject paint,jfloat skewX)408 static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) {
409 NPE_CHECK_RETURN_VOID(env, paint);
410 GraphicsJNI::getNativePaint(env, paint)->setTextSkewX(skewX);
411 }
412
getLetterSpacing(JNIEnv * env,jobject clazz,jlong paintHandle)413 static jfloat getLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle) {
414 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
415 return paint->getLetterSpacing();
416 }
417
setLetterSpacing(JNIEnv * env,jobject clazz,jlong paintHandle,jfloat letterSpacing)418 static void setLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat letterSpacing) {
419 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
420 paint->setLetterSpacing(letterSpacing);
421 }
422
setFontFeatureSettings(JNIEnv * env,jobject clazz,jlong paintHandle,jstring settings)423 static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) {
424 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
425 if (!settings) {
426 paint->setFontFeatureSettings(std::string());
427 } else {
428 ScopedUtfChars settingsChars(env, settings);
429 paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size()));
430 }
431 }
432
getMetricsInternal(JNIEnv * env,jobject jpaint,Paint::FontMetrics * metrics)433 static SkScalar getMetricsInternal(JNIEnv* env, jobject jpaint, Paint::FontMetrics *metrics) {
434 const int kElegantTop = 2500;
435 const int kElegantBottom = -1000;
436 const int kElegantAscent = 1900;
437 const int kElegantDescent = -500;
438 const int kElegantLeading = 0;
439 Paint* paint = GraphicsJNI::getNativePaint(env, jpaint);
440 TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
441 typeface = TypefaceImpl_resolveDefault(typeface);
442 FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle);
443 float saveSkewX = paint->getTextSkewX();
444 bool savefakeBold = paint->isFakeBoldText();
445 MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery);
446 SkScalar spacing = paint->getFontMetrics(metrics);
447 // The populateSkPaint call may have changed fake bold / text skew
448 // because we want to measure with those effects applied, so now
449 // restore the original settings.
450 paint->setTextSkewX(saveSkewX);
451 paint->setFakeBoldText(savefakeBold);
452 if (paint->getFontVariant() == VARIANT_ELEGANT) {
453 SkScalar size = paint->getTextSize();
454 metrics->fTop = -size * kElegantTop / 2048;
455 metrics->fBottom = -size * kElegantBottom / 2048;
456 metrics->fAscent = -size * kElegantAscent / 2048;
457 metrics->fDescent = -size * kElegantDescent / 2048;
458 metrics->fLeading = size * kElegantLeading / 2048;
459 spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
460 }
461 return spacing;
462 }
463
ascent(JNIEnv * env,jobject paint)464 static jfloat ascent(JNIEnv* env, jobject paint) {
465 NPE_CHECK_RETURN_ZERO(env, paint);
466 Paint::FontMetrics metrics;
467 getMetricsInternal(env, paint, &metrics);
468 return SkScalarToFloat(metrics.fAscent);
469 }
470
descent(JNIEnv * env,jobject paint)471 static jfloat descent(JNIEnv* env, jobject paint) {
472 NPE_CHECK_RETURN_ZERO(env, paint);
473 Paint::FontMetrics metrics;
474 getMetricsInternal(env, paint, &metrics);
475 return SkScalarToFloat(metrics.fDescent);
476 }
477
getFontMetrics(JNIEnv * env,jobject paint,jobject metricsObj)478 static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) {
479 NPE_CHECK_RETURN_ZERO(env, paint);
480 Paint::FontMetrics metrics;
481 SkScalar spacing = getMetricsInternal(env, paint, &metrics);
482
483 if (metricsObj) {
484 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
485 env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
486 env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
487 env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
488 env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
489 env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
490 }
491 return SkScalarToFloat(spacing);
492 }
493
getFontMetricsInt(JNIEnv * env,jobject paint,jobject metricsObj)494 static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) {
495 NPE_CHECK_RETURN_ZERO(env, paint);
496 Paint::FontMetrics metrics;
497
498 getMetricsInternal(env, paint, &metrics);
499 int ascent = SkScalarRoundToInt(metrics.fAscent);
500 int descent = SkScalarRoundToInt(metrics.fDescent);
501 int leading = SkScalarRoundToInt(metrics.fLeading);
502
503 if (metricsObj) {
504 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
505 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
506 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
507 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
508 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
509 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
510 }
511 return descent - ascent + leading;
512 }
513
measureText_CIII(JNIEnv * env,jobject jpaint,jcharArray text,jint index,jint count,jint bidiFlags)514 static jfloat measureText_CIII(JNIEnv* env, jobject jpaint, jcharArray text, jint index, jint count,
515 jint bidiFlags) {
516 NPE_CHECK_RETURN_ZERO(env, jpaint);
517 NPE_CHECK_RETURN_ZERO(env, text);
518
519 size_t textLength = env->GetArrayLength(text);
520 if ((index | count) < 0 || (size_t)(index + count) > textLength) {
521 doThrowAIOOBE(env);
522 return 0;
523 }
524 if (count == 0) {
525 return 0;
526 }
527
528 Paint* paint = GraphicsJNI::getNativePaint(env, jpaint);
529 const jchar* textArray = env->GetCharArrayElements(text, NULL);
530 jfloat result = 0;
531
532 Layout layout;
533 TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
534 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray, index, count, textLength);
535 result = layout.getAdvance();
536 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
537 return result;
538 }
539
measureText_StringIII(JNIEnv * env,jobject jpaint,jstring text,jint start,jint end,jint bidiFlags)540 static jfloat measureText_StringIII(JNIEnv* env, jobject jpaint, jstring text, jint start, jint end,
541 jint bidiFlags) {
542 NPE_CHECK_RETURN_ZERO(env, jpaint);
543 NPE_CHECK_RETURN_ZERO(env, text);
544
545 size_t textLength = env->GetStringLength(text);
546 int count = end - start;
547 if ((start | count) < 0 || (size_t)end > textLength) {
548 doThrowAIOOBE(env);
549 return 0;
550 }
551 if (count == 0) {
552 return 0;
553 }
554
555 const jchar* textArray = env->GetStringChars(text, NULL);
556 Paint* paint = GraphicsJNI::getNativePaint(env, jpaint);
557 jfloat width = 0;
558
559 Layout layout;
560 TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
561 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray, start, count, textLength);
562 width = layout.getAdvance();
563
564 env->ReleaseStringChars(text, textArray);
565 return width;
566 }
567
measureText_StringI(JNIEnv * env,jobject jpaint,jstring text,jint bidiFlags)568 static jfloat measureText_StringI(JNIEnv* env, jobject jpaint, jstring text, jint bidiFlags) {
569 NPE_CHECK_RETURN_ZERO(env, jpaint);
570 NPE_CHECK_RETURN_ZERO(env, text);
571
572 size_t textLength = env->GetStringLength(text);
573 if (textLength == 0) {
574 return 0;
575 }
576
577 const jchar* textArray = env->GetStringChars(text, NULL);
578 Paint* paint = GraphicsJNI::getNativePaint(env, jpaint);
579 jfloat width = 0;
580
581 Layout layout;
582 TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint);
583 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray, 0, textLength, textLength);
584 width = layout.getAdvance();
585
586 env->ReleaseStringChars(text, textArray);
587 return width;
588 }
589
dotextwidths(JNIEnv * env,Paint * paint,TypefaceImpl * typeface,const jchar text[],int count,jfloatArray widths,jint bidiFlags)590 static int dotextwidths(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar text[], int count,
591 jfloatArray widths, jint bidiFlags) {
592 NPE_CHECK_RETURN_ZERO(env, paint);
593 NPE_CHECK_RETURN_ZERO(env, text);
594
595 if (count < 0 || !widths) {
596 doThrowAIOOBE(env);
597 return 0;
598 }
599 if (count == 0) {
600 return 0;
601 }
602 size_t widthsLength = env->GetArrayLength(widths);
603 if ((size_t)count > widthsLength) {
604 doThrowAIOOBE(env);
605 return 0;
606 }
607
608 AutoJavaFloatArray autoWidths(env, widths, count);
609 jfloat* widthsArray = autoWidths.ptr();
610
611 Layout layout;
612 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count);
613 layout.getAdvances(widthsArray);
614
615 return count;
616 }
617
getTextWidths___CIII_F(JNIEnv * env,jobject clazz,jlong paintHandle,jlong typefaceHandle,jcharArray text,jint index,jint count,jint bidiFlags,jfloatArray widths)618 static jint getTextWidths___CIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray text,
619 jint index, jint count, jint bidiFlags, jfloatArray widths) {
620 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
621 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
622 const jchar* textArray = env->GetCharArrayElements(text, NULL);
623 count = dotextwidths(env, paint, typeface, textArray + index, count, widths, bidiFlags);
624 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
625 JNI_ABORT);
626 return count;
627 }
628
getTextWidths__StringIII_F(JNIEnv * env,jobject clazz,jlong paintHandle,jlong typefaceHandle,jstring text,jint start,jint end,jint bidiFlags,jfloatArray widths)629 static jint getTextWidths__StringIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring text,
630 jint start, jint end, jint bidiFlags, jfloatArray widths) {
631 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
632 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
633 const jchar* textArray = env->GetStringChars(text, NULL);
634 int count = dotextwidths(env, paint, typeface, textArray + start, end - start, widths, bidiFlags);
635 env->ReleaseStringChars(text, textArray);
636 return count;
637 }
638
doTextRunAdvances(JNIEnv * env,Paint * paint,TypefaceImpl * typeface,const jchar * text,jint start,jint count,jint contextCount,jboolean isRtl,jfloatArray advances,jint advancesIndex)639 static jfloat doTextRunAdvances(JNIEnv *env, Paint *paint, TypefaceImpl* typeface, const jchar *text,
640 jint start, jint count, jint contextCount, jboolean isRtl,
641 jfloatArray advances, jint advancesIndex) {
642 NPE_CHECK_RETURN_ZERO(env, paint);
643 NPE_CHECK_RETURN_ZERO(env, text);
644
645 if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
646 doThrowAIOOBE(env);
647 return 0;
648 }
649 if (count == 0) {
650 return 0;
651 }
652 if (advances) {
653 size_t advancesLength = env->GetArrayLength(advances);
654 if ((size_t)count > advancesLength) {
655 doThrowAIOOBE(env);
656 return 0;
657 }
658 }
659 jfloat* advancesArray = new jfloat[count];
660 jfloat totalAdvance = 0;
661
662 int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
663
664 Layout layout;
665 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, start, count, contextCount);
666 layout.getAdvances(advancesArray);
667 totalAdvance = layout.getAdvance();
668
669 if (advances != NULL) {
670 env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray);
671 }
672 delete [] advancesArray;
673 return totalAdvance;
674 }
675
getTextRunAdvances___CIIIIZ_FI(JNIEnv * env,jobject clazz,jlong paintHandle,jlong typefaceHandle,jcharArray text,jint index,jint count,jint contextIndex,jint contextCount,jboolean isRtl,jfloatArray advances,jint advancesIndex)676 static jfloat getTextRunAdvances___CIIIIZ_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
677 jlong typefaceHandle,
678 jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
679 jboolean isRtl, jfloatArray advances, jint advancesIndex) {
680 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
681 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
682 jchar* textArray = env->GetCharArrayElements(text, NULL);
683 jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextIndex,
684 index - contextIndex, count, contextCount, isRtl, advances, advancesIndex);
685 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
686 return result;
687 }
688
getTextRunAdvances__StringIIIIZ_FI(JNIEnv * env,jobject clazz,jlong paintHandle,jlong typefaceHandle,jstring text,jint start,jint end,jint contextStart,jint contextEnd,jboolean isRtl,jfloatArray advances,jint advancesIndex)689 static jfloat getTextRunAdvances__StringIIIIZ_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
690 jlong typefaceHandle,
691 jstring text, jint start, jint end, jint contextStart, jint contextEnd, jboolean isRtl,
692 jfloatArray advances, jint advancesIndex) {
693 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
694 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
695 const jchar* textArray = env->GetStringChars(text, NULL);
696 jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextStart,
697 start - contextStart, end - start, contextEnd - contextStart, isRtl,
698 advances, advancesIndex);
699 env->ReleaseStringChars(text, textArray);
700 return result;
701 }
702
doTextRunCursor(JNIEnv * env,Paint * paint,const jchar * text,jint start,jint count,jint flags,jint offset,jint opt)703 static jint doTextRunCursor(JNIEnv *env, Paint* paint, const jchar *text, jint start,
704 jint count, jint flags, jint offset, jint opt) {
705 GraphemeBreak::MoveOpt moveOpt = GraphemeBreak::MoveOpt(opt);
706 size_t result = GraphemeBreak::getTextRunCursor(text, start, count, offset, moveOpt);
707 return static_cast<jint>(result);
708 }
709
getTextRunCursor___C(JNIEnv * env,jobject clazz,jlong paintHandle,jcharArray text,jint contextStart,jint contextCount,jint dir,jint offset,jint cursorOpt)710 static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
711 jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) {
712 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
713 jchar* textArray = env->GetCharArrayElements(text, NULL);
714 jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, dir,
715 offset, cursorOpt);
716 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
717 return result;
718 }
719
getTextRunCursor__String(JNIEnv * env,jobject clazz,jlong paintHandle,jstring text,jint contextStart,jint contextEnd,jint dir,jint offset,jint cursorOpt)720 static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text,
721 jint contextStart, jint contextEnd, jint dir, jint offset, jint cursorOpt) {
722 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
723 const jchar* textArray = env->GetStringChars(text, NULL);
724 jint result = doTextRunCursor(env, paint, textArray, contextStart,
725 contextEnd - contextStart, dir, offset, cursorOpt);
726 env->ReleaseStringChars(text, textArray);
727 return result;
728 }
729
730 class GetTextFunctor {
731 public:
GetTextFunctor(const Layout & layout,SkPath * path,jfloat x,jfloat y,Paint * paint,uint16_t * glyphs,SkPoint * pos)732 GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, Paint* paint,
733 uint16_t* glyphs, SkPoint* pos)
734 : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
735 }
736
operator ()(size_t start,size_t end)737 void operator()(size_t start, size_t end) {
738 for (size_t i = start; i < end; i++) {
739 glyphs[i] = layout.getGlyphId(i);
740 pos[i].fX = x + layout.getX(i);
741 pos[i].fY = y + layout.getY(i);
742 }
743 if (start == 0) {
744 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
745 } else {
746 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
747 path->addPath(tmpPath);
748 }
749 }
750 private:
751 const Layout& layout;
752 SkPath* path;
753 jfloat x;
754 jfloat y;
755 Paint* paint;
756 uint16_t* glyphs;
757 SkPoint* pos;
758 SkPath tmpPath;
759 };
760
getTextPath(JNIEnv * env,Paint * paint,TypefaceImpl * typeface,const jchar * text,jint count,jint bidiFlags,jfloat x,jfloat y,SkPath * path)761 static void getTextPath(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar* text,
762 jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
763 Layout layout;
764 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count);
765 size_t nGlyphs = layout.nGlyphs();
766 uint16_t* glyphs = new uint16_t[nGlyphs];
767 SkPoint* pos = new SkPoint[nGlyphs];
768
769 x += MinikinUtils::xOffsetForTextAlign(paint, layout);
770 Paint::Align align = paint->getTextAlign();
771 paint->setTextAlign(Paint::kLeft_Align);
772 paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
773 GetTextFunctor f(layout, path, x, y, paint, glyphs, pos);
774 MinikinUtils::forFontRun(layout, paint, f);
775 paint->setTextAlign(align);
776 delete[] glyphs;
777 delete[] pos;
778 }
779
getTextPath___C(JNIEnv * env,jobject clazz,jlong paintHandle,jlong typefaceHandle,jint bidiFlags,jcharArray text,jint index,jint count,jfloat x,jfloat y,jlong pathHandle)780 static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle,
781 jlong typefaceHandle, jint bidiFlags,
782 jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
783 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
784 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
785 SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
786 const jchar* textArray = env->GetCharArrayElements(text, NULL);
787 getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
788 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
789 }
790
getTextPath__String(JNIEnv * env,jobject clazz,jlong paintHandle,jlong typefaceHandle,jint bidiFlags,jstring text,jint start,jint end,jfloat x,jfloat y,jlong pathHandle)791 static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle,
792 jlong typefaceHandle, jint bidiFlags,
793 jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
794 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
795 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
796 SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
797 const jchar* textArray = env->GetStringChars(text, NULL);
798 getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
799 env->ReleaseStringChars(text, textArray);
800 }
801
setShadowLayer(JNIEnv * env,jobject clazz,jlong paintHandle,jfloat radius,jfloat dx,jfloat dy,jint color)802 static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius,
803 jfloat dx, jfloat dy, jint color) {
804 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
805 if (radius <= 0) {
806 paint->setLooper(NULL);
807 }
808 else {
809 SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
810 paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref();
811 }
812 }
813
hasShadowLayer(JNIEnv * env,jobject clazz,jlong paintHandle)814 static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) {
815 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
816 return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL);
817 }
818
breakText(JNIEnv * env,const Paint & paint,TypefaceImpl * typeface,const jchar text[],int count,float maxWidth,jint bidiFlags,jfloatArray jmeasured,Paint::TextBufferDirection textBufferDirection)819 static int breakText(JNIEnv* env, const Paint& paint, TypefaceImpl* typeface, const jchar text[],
820 int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
821 Paint::TextBufferDirection textBufferDirection) {
822 size_t measuredCount = 0;
823 float measured = 0;
824
825 Layout layout;
826 MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
827 float* advances = new float[count];
828 layout.getAdvances(advances);
829 const bool forwardScan = (textBufferDirection == Paint::kForward_TextBufferDirection);
830 for (int i = 0; i < count; i++) {
831 // traverse in the given direction
832 int index = forwardScan ? i : (count - i - 1);
833 float width = advances[index];
834 if (measured + width > maxWidth) {
835 break;
836 }
837 // properly handle clusters when scanning backwards
838 if (forwardScan || width != 0.0f) {
839 measuredCount = i + 1;
840 }
841 measured += width;
842 }
843 delete[] advances;
844
845 if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
846 AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
847 jfloat* array = autoMeasured.ptr();
848 array[0] = measured;
849 }
850 return measuredCount;
851 }
852
breakTextC(JNIEnv * env,jobject clazz,jlong paintHandle,jlong typefaceHandle,jcharArray jtext,jint index,jint count,jfloat maxWidth,jint bidiFlags,jfloatArray jmeasuredWidth)853 static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray jtext,
854 jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
855 NPE_CHECK_RETURN_ZERO(env, jtext);
856
857 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
858 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
859
860 Paint::TextBufferDirection tbd;
861 if (count < 0) {
862 tbd = Paint::kBackward_TextBufferDirection;
863 count = -count;
864 }
865 else {
866 tbd = Paint::kForward_TextBufferDirection;
867 }
868
869 if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
870 doThrowAIOOBE(env);
871 return 0;
872 }
873
874 const jchar* text = env->GetCharArrayElements(jtext, NULL);
875 count = breakText(env, *paint, typeface, text + index, count, maxWidth,
876 bidiFlags, jmeasuredWidth, tbd);
877 env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
878 JNI_ABORT);
879 return count;
880 }
881
breakTextS(JNIEnv * env,jobject clazz,jlong paintHandle,jlong typefaceHandle,jstring jtext,jboolean forwards,jfloat maxWidth,jint bidiFlags,jfloatArray jmeasuredWidth)882 static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext,
883 jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
884 NPE_CHECK_RETURN_ZERO(env, jtext);
885
886 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
887 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
888
889 Paint::TextBufferDirection tbd = forwards ?
890 Paint::kForward_TextBufferDirection :
891 Paint::kBackward_TextBufferDirection;
892
893 int count = env->GetStringLength(jtext);
894 const jchar* text = env->GetStringChars(jtext, NULL);
895 count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, tbd);
896 env->ReleaseStringChars(jtext, text);
897 return count;
898 }
899
doTextBounds(JNIEnv * env,const jchar * text,int count,jobject bounds,const Paint & paint,TypefaceImpl * typeface,jint bidiFlags)900 static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
901 const Paint& paint, TypefaceImpl* typeface, jint bidiFlags) {
902 SkRect r;
903 SkIRect ir;
904
905 Layout layout;
906 MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
907 MinikinRect rect;
908 layout.getBounds(&rect);
909 r.fLeft = rect.mLeft;
910 r.fTop = rect.mTop;
911 r.fRight = rect.mRight;
912 r.fBottom = rect.mBottom;
913 r.roundOut(&ir);
914 GraphicsJNI::irect_to_jrect(ir, env, bounds);
915 }
916
getStringBounds(JNIEnv * env,jobject,jlong paintHandle,jlong typefaceHandle,jstring text,jint start,jint end,jint bidiFlags,jobject bounds)917 static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
918 jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
919 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);;
920 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
921 const jchar* textArray = env->GetStringChars(text, NULL);
922 doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
923 env->ReleaseStringChars(text, textArray);
924 }
925
getCharArrayBounds(JNIEnv * env,jobject,jlong paintHandle,jlong typefaceHandle,jcharArray text,jint index,jint count,jint bidiFlags,jobject bounds)926 static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
927 jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
928 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
929 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle);
930 const jchar* textArray = env->GetCharArrayElements(text, NULL);
931 doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
932 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
933 JNI_ABORT);
934 }
935
936 };
937
938 static JNINativeMethod methods[] = {
939 {"finalizer", "(J)V", (void*) PaintGlue::finalizer},
940 {"native_init","()J", (void*) PaintGlue::init},
941 {"native_initWithPaint","(J)J", (void*) PaintGlue::initWithPaint},
942
943 {"native_reset","!(J)V", (void*) PaintGlue::reset},
944 {"native_set","!(JJ)V", (void*) PaintGlue::assign},
945 {"getFlags","!()I", (void*) PaintGlue::getFlags},
946 {"setFlags","!(I)V", (void*) PaintGlue::setFlags},
947 {"getHinting","!()I", (void*) PaintGlue::getHinting},
948 {"setHinting","!(I)V", (void*) PaintGlue::setHinting},
949 {"setAntiAlias","!(Z)V", (void*) PaintGlue::setAntiAlias},
950 {"setSubpixelText","!(Z)V", (void*) PaintGlue::setSubpixelText},
951 {"setLinearText","!(Z)V", (void*) PaintGlue::setLinearText},
952 {"setUnderlineText","!(Z)V", (void*) PaintGlue::setUnderlineText},
953 {"setStrikeThruText","!(Z)V", (void*) PaintGlue::setStrikeThruText},
954 {"setFakeBoldText","!(Z)V", (void*) PaintGlue::setFakeBoldText},
955 {"setFilterBitmap","!(Z)V", (void*) PaintGlue::setFilterBitmap},
956 {"setDither","!(Z)V", (void*) PaintGlue::setDither},
957 {"native_getStyle","!(J)I", (void*) PaintGlue::getStyle},
958 {"native_setStyle","!(JI)V", (void*) PaintGlue::setStyle},
959 {"getColor","!()I", (void*) PaintGlue::getColor},
960 {"setColor","!(I)V", (void*) PaintGlue::setColor},
961 {"getAlpha","!()I", (void*) PaintGlue::getAlpha},
962 {"setAlpha","!(I)V", (void*) PaintGlue::setAlpha},
963 {"getStrokeWidth","!()F", (void*) PaintGlue::getStrokeWidth},
964 {"setStrokeWidth","!(F)V", (void*) PaintGlue::setStrokeWidth},
965 {"getStrokeMiter","!()F", (void*) PaintGlue::getStrokeMiter},
966 {"setStrokeMiter","!(F)V", (void*) PaintGlue::setStrokeMiter},
967 {"native_getStrokeCap","!(J)I", (void*) PaintGlue::getStrokeCap},
968 {"native_setStrokeCap","!(JI)V", (void*) PaintGlue::setStrokeCap},
969 {"native_getStrokeJoin","!(J)I", (void*) PaintGlue::getStrokeJoin},
970 {"native_setStrokeJoin","!(JI)V", (void*) PaintGlue::setStrokeJoin},
971 {"native_getFillPath","!(JJJ)Z", (void*) PaintGlue::getFillPath},
972 {"native_setShader","!(JJ)J", (void*) PaintGlue::setShader},
973 {"native_setColorFilter","!(JJ)J", (void*) PaintGlue::setColorFilter},
974 {"native_setXfermode","!(JJ)J", (void*) PaintGlue::setXfermode},
975 {"native_setPathEffect","!(JJ)J", (void*) PaintGlue::setPathEffect},
976 {"native_setMaskFilter","!(JJ)J", (void*) PaintGlue::setMaskFilter},
977 {"native_setTypeface","!(JJ)J", (void*) PaintGlue::setTypeface},
978 {"native_setRasterizer","!(JJ)J", (void*) PaintGlue::setRasterizer},
979 {"native_getTextAlign","!(J)I", (void*) PaintGlue::getTextAlign},
980 {"native_setTextAlign","!(JI)V", (void*) PaintGlue::setTextAlign},
981 {"native_setTextLocale","!(JLjava/lang/String;)V", (void*) PaintGlue::setTextLocale},
982 {"isElegantTextHeight","!()Z", (void*) PaintGlue::isElegantTextHeight},
983 {"setElegantTextHeight","!(Z)V", (void*) PaintGlue::setElegantTextHeight},
984 {"getTextSize","!()F", (void*) PaintGlue::getTextSize},
985 {"setTextSize","!(F)V", (void*) PaintGlue::setTextSize},
986 {"getTextScaleX","!()F", (void*) PaintGlue::getTextScaleX},
987 {"setTextScaleX","!(F)V", (void*) PaintGlue::setTextScaleX},
988 {"getTextSkewX","!()F", (void*) PaintGlue::getTextSkewX},
989 {"setTextSkewX","!(F)V", (void*) PaintGlue::setTextSkewX},
990 {"native_getLetterSpacing","!(J)F", (void*) PaintGlue::getLetterSpacing},
991 {"native_setLetterSpacing","!(JF)V", (void*) PaintGlue::setLetterSpacing},
992 {"native_setFontFeatureSettings","(JLjava/lang/String;)V", (void*) PaintGlue::setFontFeatureSettings},
993 {"ascent","!()F", (void*) PaintGlue::ascent},
994 {"descent","!()F", (void*) PaintGlue::descent},
995
996 {"getFontMetrics", "(Landroid/graphics/Paint$FontMetrics;)F", (void*)PaintGlue::getFontMetrics},
997 {"getFontMetricsInt", "(Landroid/graphics/Paint$FontMetricsInt;)I", (void*)PaintGlue::getFontMetricsInt},
998 {"native_measureText","([CIII)F", (void*) PaintGlue::measureText_CIII},
999 {"native_measureText","(Ljava/lang/String;I)F", (void*) PaintGlue::measureText_StringI},
1000 {"native_measureText","(Ljava/lang/String;III)F", (void*) PaintGlue::measureText_StringIII},
1001 {"native_breakText","(JJ[CIIFI[F)I", (void*) PaintGlue::breakTextC},
1002 {"native_breakText","(JJLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS},
1003 {"native_getTextWidths","(JJ[CIII[F)I", (void*) PaintGlue::getTextWidths___CIII_F},
1004 {"native_getTextWidths","(JJLjava/lang/String;III[F)I", (void*) PaintGlue::getTextWidths__StringIII_F},
1005 {"native_getTextRunAdvances","(JJ[CIIIIZ[FI)F",
1006 (void*) PaintGlue::getTextRunAdvances___CIIIIZ_FI},
1007 {"native_getTextRunAdvances","(JJLjava/lang/String;IIIIZ[FI)F",
1008 (void*) PaintGlue::getTextRunAdvances__StringIIIIZ_FI},
1009
1010 {"native_getTextRunCursor", "(J[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C},
1011 {"native_getTextRunCursor", "(JLjava/lang/String;IIIII)I",
1012 (void*) PaintGlue::getTextRunCursor__String},
1013 {"native_getTextPath","(JJI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C},
1014 {"native_getTextPath","(JJILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String},
1015 {"nativeGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V",
1016 (void*) PaintGlue::getStringBounds },
1017 {"nativeGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V",
1018 (void*) PaintGlue::getCharArrayBounds },
1019
1020 {"native_setShadowLayer", "!(JFFFI)V", (void*)PaintGlue::setShadowLayer},
1021 {"native_hasShadowLayer", "!(J)Z", (void*)PaintGlue::hasShadowLayer}
1022 };
1023
req_fieldID(jfieldID id)1024 static jfieldID req_fieldID(jfieldID id) {
1025 SkASSERT(id);
1026 return id;
1027 }
1028
register_android_graphics_Paint(JNIEnv * env)1029 int register_android_graphics_Paint(JNIEnv* env) {
1030 gFontMetrics_class = env->FindClass("android/graphics/Paint$FontMetrics");
1031 SkASSERT(gFontMetrics_class);
1032 gFontMetrics_class = (jclass)env->NewGlobalRef(gFontMetrics_class);
1033
1034 gFontMetrics_fieldID.top = req_fieldID(env->GetFieldID(gFontMetrics_class, "top", "F"));
1035 gFontMetrics_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetrics_class, "ascent", "F"));
1036 gFontMetrics_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetrics_class, "descent", "F"));
1037 gFontMetrics_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetrics_class, "bottom", "F"));
1038 gFontMetrics_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetrics_class, "leading", "F"));
1039
1040 gFontMetricsInt_class = env->FindClass("android/graphics/Paint$FontMetricsInt");
1041 SkASSERT(gFontMetricsInt_class);
1042 gFontMetricsInt_class = (jclass)env->NewGlobalRef(gFontMetricsInt_class);
1043
1044 gFontMetricsInt_fieldID.top = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "top", "I"));
1045 gFontMetricsInt_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "ascent", "I"));
1046 gFontMetricsInt_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "descent", "I"));
1047 gFontMetricsInt_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "bottom", "I"));
1048 gFontMetricsInt_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "leading", "I"));
1049
1050 int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Paint", methods,
1051 sizeof(methods) / sizeof(methods[0]));
1052 return result;
1053 }
1054
1055 }
1056