1 /* libs/android_runtime/android/graphics/Paint.cpp
3 ** Copyright 2006, The Android Open Source Project
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
9 ** http://www.apache.org/licenses/LICENSE-2.0
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.
18 #define LOG_TAG "Paint"
20 #include <utils/Log.h>
23 #include "GraphicsJNI.h"
24 #include "core_jni_helpers.h"
25 #include <ScopedStringChars.h>
26 #include <ScopedUtfChars.h>
28 #include "SkBlurDrawLooper.h"
29 #include "SkColorFilter.h"
30 #include "SkMaskFilter.h"
32 #include "SkRasterizer.h"
34 #include "SkTypeface.h"
35 #include "SkXfermode.h"
36 #include "unicode/uloc.h"
37 #include "unicode/ushape.h"
38 #include "utils/Blur.h"
40 #include <hwui/MinikinSkia.h>
41 #include <hwui/MinikinUtils.h>
42 #include <hwui/Paint.h>
43 #include <hwui/Typeface.h>
44 #include <minikin/GraphemeBreak.h>
45 #include <minikin/Measurement.h>
46 #include <unicode/utf16.h>
63 static jclass gFontMetrics_class;
64 static JMetricsID gFontMetrics_fieldID;
66 static jclass gFontMetricsInt_class;
67 static JMetricsID gFontMetricsInt_fieldID;
69 static void defaultSettingsForAndroid(Paint* paint) {
70 // GlyphID encoding is required because we are using Harfbuzz shaping
71 paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
76 AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
79 static void deletePaint(Paint* paint) {
83 static jlong getNativeFinalizer(JNIEnv*, jobject) {
84 return static_cast<jlong>(reinterpret_cast<uintptr_t>(&deletePaint));
87 static jlong init(JNIEnv* env, jobject) {
88 static_assert(1 << 0 == SkPaint::kAntiAlias_Flag, "paint_flags_mismatch");
89 static_assert(1 << 2 == SkPaint::kDither_Flag, "paint_flags_mismatch");
90 static_assert(1 << 3 == SkPaint::kUnderlineText_Flag, "paint_flags_mismatch");
91 static_assert(1 << 4 == SkPaint::kStrikeThruText_Flag, "paint_flags_mismatch");
92 static_assert(1 << 5 == SkPaint::kFakeBoldText_Flag, "paint_flags_mismatch");
93 static_assert(1 << 6 == SkPaint::kLinearText_Flag, "paint_flags_mismatch");
94 static_assert(1 << 7 == SkPaint::kSubpixelText_Flag, "paint_flags_mismatch");
95 static_assert(1 << 8 == SkPaint::kDevKernText_Flag, "paint_flags_mismatch");
96 static_assert(1 << 10 == SkPaint::kEmbeddedBitmapText_Flag, "paint_flags_mismatch");
98 Paint* obj = new Paint();
99 defaultSettingsForAndroid(obj);
100 return reinterpret_cast<jlong>(obj);
103 static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
104 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
105 Paint* obj = new Paint(*paint);
106 return reinterpret_cast<jlong>(obj);
109 static void reset(JNIEnv* env, jobject clazz, jlong objHandle) {
110 Paint* obj = reinterpret_cast<Paint*>(objHandle);
112 defaultSettingsForAndroid(obj);
115 static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) {
116 Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle);
117 const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle);
121 // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
122 static const uint32_t sFilterBitmapFlag = 0x02;
124 static jint getFlags(JNIEnv* env, jobject, jlong paintHandle) {
125 Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
126 uint32_t result = nativePaint->getFlags();
127 result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away.
128 if (nativePaint->getFilterQuality() != kNone_SkFilterQuality) {
129 result |= sFilterBitmapFlag;
131 return static_cast<jint>(result);
134 static void setFlags(JNIEnv* env, jobject, jlong paintHandle, jint flags) {
135 Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
136 // Instead of modifying 0x02, change the filter level.
137 nativePaint->setFilterQuality(flags & sFilterBitmapFlag
138 ? kLow_SkFilterQuality
139 : kNone_SkFilterQuality);
140 // Don't pass through filter flag, which is no longer stored in paint's flags.
141 flags &= ~sFilterBitmapFlag;
142 // Use the existing value for 0x02.
143 const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag;
144 flags |= existing0x02Flag;
145 nativePaint->setFlags(flags);
148 static jint getHinting(JNIEnv* env, jobject, jlong paintHandle) {
149 return reinterpret_cast<Paint*>(paintHandle)->getHinting()
150 == Paint::kNo_Hinting ? 0 : 1;
153 static void setHinting(JNIEnv* env, jobject, jlong paintHandle, jint mode) {
154 reinterpret_cast<Paint*>(paintHandle)->setHinting(
155 mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting);
158 static void setAntiAlias(JNIEnv* env, jobject, jlong paintHandle, jboolean aa) {
159 reinterpret_cast<Paint*>(paintHandle)->setAntiAlias(aa);
162 static void setLinearText(JNIEnv* env, jobject, jlong paintHandle, jboolean linearText) {
163 reinterpret_cast<Paint*>(paintHandle)->setLinearText(linearText);
166 static void setSubpixelText(JNIEnv* env, jobject, jlong paintHandle, jboolean subpixelText) {
167 reinterpret_cast<Paint*>(paintHandle)->setSubpixelText(subpixelText);
170 static void setUnderlineText(JNIEnv* env, jobject, jlong paintHandle, jboolean underlineText) {
171 reinterpret_cast<Paint*>(paintHandle)->setUnderlineText(underlineText);
174 static void setStrikeThruText(JNIEnv* env, jobject, jlong paintHandle, jboolean strikeThruText) {
175 reinterpret_cast<Paint*>(paintHandle)->setStrikeThruText(strikeThruText);
178 static void setFakeBoldText(JNIEnv* env, jobject, jlong paintHandle, jboolean fakeBoldText) {
179 reinterpret_cast<Paint*>(paintHandle)->setFakeBoldText(fakeBoldText);
182 static void setFilterBitmap(JNIEnv* env, jobject, jlong paintHandle, jboolean filterBitmap) {
183 reinterpret_cast<Paint*>(paintHandle)->setFilterQuality(
184 filterBitmap ? kLow_SkFilterQuality : kNone_SkFilterQuality);
187 static void setDither(JNIEnv* env, jobject, jlong paintHandle, jboolean dither) {
188 reinterpret_cast<Paint*>(paintHandle)->setDither(dither);
191 static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) {
192 Paint* obj = reinterpret_cast<Paint*>(objHandle);
193 return static_cast<jint>(obj->getStyle());
196 static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) {
197 Paint* obj = reinterpret_cast<Paint*>(objHandle);
198 Paint::Style style = static_cast<Paint::Style>(styleHandle);
199 obj->setStyle(style);
202 static jint getColor(JNIEnv* env, jobject, jlong paintHandle) {
204 color = reinterpret_cast<Paint*>(paintHandle)->getColor();
205 return static_cast<jint>(color);
208 static jint getAlpha(JNIEnv* env, jobject, jlong paintHandle) {
210 alpha = reinterpret_cast<Paint*>(paintHandle)->getAlpha();
211 return static_cast<jint>(alpha);
214 static void setColor(JNIEnv* env, jobject, jlong paintHandle, jint color) {
215 reinterpret_cast<Paint*>(paintHandle)->setColor(color);
218 static void setAlpha(JNIEnv* env, jobject, jlong paintHandle, jint a) {
219 reinterpret_cast<Paint*>(paintHandle)->setAlpha(a);
222 static jfloat getStrokeWidth(JNIEnv* env, jobject, jlong paintHandle) {
223 return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeWidth());
226 static void setStrokeWidth(JNIEnv* env, jobject, jlong paintHandle, jfloat width) {
227 reinterpret_cast<Paint*>(paintHandle)->setStrokeWidth(width);
230 static jfloat getStrokeMiter(JNIEnv* env, jobject, jlong paintHandle) {
231 return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeMiter());
234 static void setStrokeMiter(JNIEnv* env, jobject, jlong paintHandle, jfloat miter) {
235 reinterpret_cast<Paint*>(paintHandle)->setStrokeMiter(miter);
238 static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) {
239 Paint* obj = reinterpret_cast<Paint*>(objHandle);
240 return static_cast<jint>(obj->getStrokeCap());
243 static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) {
244 Paint* obj = reinterpret_cast<Paint*>(objHandle);
245 Paint::Cap cap = static_cast<Paint::Cap>(capHandle);
246 obj->setStrokeCap(cap);
249 static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) {
250 Paint* obj = reinterpret_cast<Paint*>(objHandle);
251 return static_cast<jint>(obj->getStrokeJoin());
254 static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) {
255 Paint* obj = reinterpret_cast<Paint*>(objHandle);
256 Paint::Join join = (Paint::Join) joinHandle;
257 obj->setStrokeJoin(join);
260 static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) {
261 Paint* obj = reinterpret_cast<Paint*>(objHandle);
262 SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
263 SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
264 return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
267 static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) {
268 Paint* obj = reinterpret_cast<Paint*>(objHandle);
269 SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
270 return reinterpret_cast<jlong>(obj->setShader(shader));
273 static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) {
274 Paint* obj = reinterpret_cast<Paint *>(objHandle);
275 SkColorFilter* filter = reinterpret_cast<SkColorFilter *>(filterHandle);
276 return reinterpret_cast<jlong>(obj->setColorFilter(filter));
279 static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) {
280 Paint* obj = reinterpret_cast<Paint*>(objHandle);
281 SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle);
282 return reinterpret_cast<jlong>(obj->setXfermode(xfermode));
285 static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) {
286 Paint* obj = reinterpret_cast<Paint*>(objHandle);
287 SkPathEffect* effect = reinterpret_cast<SkPathEffect*>(effectHandle);
288 return reinterpret_cast<jlong>(obj->setPathEffect(effect));
291 static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) {
292 Paint* obj = reinterpret_cast<Paint*>(objHandle);
293 SkMaskFilter* maskfilter = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
294 return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter));
297 static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) {
298 // TODO: in Paint refactoring, set typeface on android Paint, not Paint
302 static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) {
303 Paint* obj = reinterpret_cast<Paint*>(objHandle);
304 SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle));
305 return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer));
308 static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) {
309 Paint* obj = reinterpret_cast<Paint*>(objHandle);
310 return static_cast<jint>(obj->getTextAlign());
313 static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) {
314 Paint* obj = reinterpret_cast<Paint*>(objHandle);
315 Paint::Align align = static_cast<Paint::Align>(alignHandle);
316 obj->setTextAlign(align);
319 static jint setTextLocales(JNIEnv* env, jobject clazz, jlong objHandle, jstring locales) {
320 Paint* obj = reinterpret_cast<Paint*>(objHandle);
321 ScopedUtfChars localesChars(env, locales);
322 jint minikinLangListId = FontStyle::registerLanguageList(localesChars.c_str());
323 obj->setMinikinLangListId(minikinLangListId);
324 return minikinLangListId;
327 static void setTextLocalesByMinikinLangListId(JNIEnv* env, jobject clazz, jlong objHandle,
328 jint minikinLangListId) {
329 Paint* obj = reinterpret_cast<Paint*>(objHandle);
330 obj->setMinikinLangListId(minikinLangListId);
333 static jboolean isElegantTextHeight(JNIEnv* env, jobject, jlong paintHandle) {
334 Paint* obj = reinterpret_cast<Paint*>(paintHandle);
335 return obj->getFontVariant() == VARIANT_ELEGANT;
338 static void setElegantTextHeight(JNIEnv* env, jobject, jlong paintHandle, jboolean aa) {
339 Paint* obj = reinterpret_cast<Paint*>(paintHandle);
340 obj->setFontVariant(aa ? VARIANT_ELEGANT : VARIANT_DEFAULT);
343 static jfloat getTextSize(JNIEnv* env, jobject, jlong paintHandle) {
344 return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSize());
347 static void setTextSize(JNIEnv* env, jobject, jlong paintHandle, jfloat textSize) {
348 reinterpret_cast<Paint*>(paintHandle)->setTextSize(textSize);
351 static jfloat getTextScaleX(JNIEnv* env, jobject, jlong paintHandle) {
352 return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextScaleX());
355 static void setTextScaleX(JNIEnv* env, jobject, jlong paintHandle, jfloat scaleX) {
356 reinterpret_cast<Paint*>(paintHandle)->setTextScaleX(scaleX);
359 static jfloat getTextSkewX(JNIEnv* env, jobject, jlong paintHandle) {
360 return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSkewX());
363 static void setTextSkewX(JNIEnv* env, jobject, jlong paintHandle, jfloat skewX) {
364 reinterpret_cast<Paint*>(paintHandle)->setTextSkewX(skewX);
367 static jfloat getLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle) {
368 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
369 return paint->getLetterSpacing();
372 static void setLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat letterSpacing) {
373 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
374 paint->setLetterSpacing(letterSpacing);
377 static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) {
378 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
380 paint->setFontFeatureSettings(std::string());
382 ScopedUtfChars settingsChars(env, settings);
383 paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size()));
387 static jint getHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) {
388 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
389 return paint->getHyphenEdit();
392 static void setHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) {
393 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
394 paint->setHyphenEdit((uint32_t)hyphen);
397 static SkScalar getMetricsInternal(jlong paintHandle, jlong typefaceHandle,
398 Paint::FontMetrics *metrics) {
399 const int kElegantTop = 2500;
400 const int kElegantBottom = -1000;
401 const int kElegantAscent = 1900;
402 const int kElegantDescent = -500;
403 const int kElegantLeading = 0;
404 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
405 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
406 typeface = Typeface::resolveDefault(typeface);
407 FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle);
408 float saveSkewX = paint->getTextSkewX();
409 bool savefakeBold = paint->isFakeBoldText();
410 MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery);
411 SkScalar spacing = paint->getFontMetrics(metrics);
412 // The populateSkPaint call may have changed fake bold / text skew
413 // because we want to measure with those effects applied, so now
414 // restore the original settings.
415 paint->setTextSkewX(saveSkewX);
416 paint->setFakeBoldText(savefakeBold);
417 if (paint->getFontVariant() == VARIANT_ELEGANT) {
418 SkScalar size = paint->getTextSize();
419 metrics->fTop = -size * kElegantTop / 2048;
420 metrics->fBottom = -size * kElegantBottom / 2048;
421 metrics->fAscent = -size * kElegantAscent / 2048;
422 metrics->fDescent = -size * kElegantDescent / 2048;
423 metrics->fLeading = size * kElegantLeading / 2048;
424 spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
429 static jfloat ascent(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle) {
430 Paint::FontMetrics metrics;
431 getMetricsInternal(paintHandle, typefaceHandle, &metrics);
432 return SkScalarToFloat(metrics.fAscent);
435 static jfloat descent(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle) {
436 Paint::FontMetrics metrics;
437 getMetricsInternal(paintHandle, typefaceHandle, &metrics);
438 return SkScalarToFloat(metrics.fDescent);
441 static jfloat getFontMetrics(JNIEnv* env, jobject, jlong paintHandle,
442 jlong typefaceHandle, jobject metricsObj) {
443 Paint::FontMetrics metrics;
444 SkScalar spacing = getMetricsInternal(paintHandle, typefaceHandle, &metrics);
447 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
448 env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
449 env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
450 env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
451 env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
452 env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
454 return SkScalarToFloat(spacing);
457 static jint getFontMetricsInt(JNIEnv* env, jobject, jlong paintHandle,
458 jlong typefaceHandle, jobject metricsObj) {
459 Paint::FontMetrics metrics;
461 getMetricsInternal(paintHandle, typefaceHandle, &metrics);
462 int ascent = SkScalarRoundToInt(metrics.fAscent);
463 int descent = SkScalarRoundToInt(metrics.fDescent);
464 int leading = SkScalarRoundToInt(metrics.fLeading);
467 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
468 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
469 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
470 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
471 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
472 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
474 return descent - ascent + leading;
477 static jfloat doTextAdvances(JNIEnv *env, Paint *paint, Typeface* typeface,
478 const jchar *text, jint start, jint count, jint contextCount, jint bidiFlags,
479 jfloatArray advances, jint advancesIndex) {
480 NPE_CHECK_RETURN_ZERO(env, text);
482 if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
490 size_t advancesLength = env->GetArrayLength(advances);
491 if ((size_t)(count + advancesIndex) > advancesLength) {
496 std::unique_ptr<jfloat[]> advancesArray;
498 advancesArray.reset(new jfloat[count]);
500 const float advance = MinikinUtils::measureText(paint, bidiFlags, typeface, text,
501 start, count, contextCount, advancesArray.get());
503 env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray.get());
508 static jfloat getTextAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
509 jlong typefaceHandle,
510 jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
511 jint bidiFlags, jfloatArray advances, jint advancesIndex) {
512 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
513 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
514 jchar* textArray = env->GetCharArrayElements(text, NULL);
515 jfloat result = doTextAdvances(env, paint, typeface, textArray + contextIndex,
516 index - contextIndex, count, contextCount, bidiFlags, advances, advancesIndex);
517 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
521 static jfloat getTextAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
522 jlong typefaceHandle,
523 jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint bidiFlags,
524 jfloatArray advances, jint advancesIndex) {
525 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
526 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
527 const jchar* textArray = env->GetStringChars(text, NULL);
528 jfloat result = doTextAdvances(env, paint, typeface, textArray + contextStart,
529 start - contextStart, end - start, contextEnd - contextStart, bidiFlags,
530 advances, advancesIndex);
531 env->ReleaseStringChars(text, textArray);
535 static jint doTextRunCursor(JNIEnv *env, Paint* paint, const jchar *text, jint start,
536 jint count, jint flags, jint offset, jint opt) {
537 GraphemeBreak::MoveOpt moveOpt = GraphemeBreak::MoveOpt(opt);
538 size_t result = GraphemeBreak::getTextRunCursor(text, start, count, offset, moveOpt);
539 return static_cast<jint>(result);
542 static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
543 jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) {
544 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
545 jchar* textArray = env->GetCharArrayElements(text, NULL);
546 jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, dir,
548 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
552 static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text,
553 jint contextStart, jint contextEnd, jint dir, jint offset, jint cursorOpt) {
554 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
555 const jchar* textArray = env->GetStringChars(text, NULL);
556 jint result = doTextRunCursor(env, paint, textArray, contextStart,
557 contextEnd - contextStart, dir, offset, cursorOpt);
558 env->ReleaseStringChars(text, textArray);
562 class GetTextFunctor {
564 GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, Paint* paint,
565 uint16_t* glyphs, SkPoint* pos)
566 : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
569 void operator()(size_t start, size_t end) {
570 for (size_t i = start; i < end; i++) {
571 glyphs[i] = layout.getGlyphId(i);
572 pos[i].fX = x + layout.getX(i);
573 pos[i].fY = y + layout.getY(i);
576 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
578 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
579 path->addPath(tmpPath);
583 const Layout& layout;
593 static void getTextPath(JNIEnv* env, Paint* paint, Typeface* typeface, const jchar* text,
594 jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
596 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count);
597 size_t nGlyphs = layout.nGlyphs();
598 uint16_t* glyphs = new uint16_t[nGlyphs];
599 SkPoint* pos = new SkPoint[nGlyphs];
601 x += MinikinUtils::xOffsetForTextAlign(paint, layout);
602 Paint::Align align = paint->getTextAlign();
603 paint->setTextAlign(Paint::kLeft_Align);
604 paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
605 GetTextFunctor f(layout, path, x, y, paint, glyphs, pos);
606 MinikinUtils::forFontRun(layout, paint, f);
607 paint->setTextAlign(align);
612 static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle,
613 jlong typefaceHandle, jint bidiFlags,
614 jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
615 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
616 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
617 SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
618 const jchar* textArray = env->GetCharArrayElements(text, NULL);
619 getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
620 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
623 static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle,
624 jlong typefaceHandle, jint bidiFlags,
625 jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
626 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
627 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
628 SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
629 const jchar* textArray = env->GetStringChars(text, NULL);
630 getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
631 env->ReleaseStringChars(text, textArray);
634 static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius,
635 jfloat dx, jfloat dy, jint color) {
636 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
638 paint->setLooper(NULL);
641 SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
642 paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref();
646 static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) {
647 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
648 return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL);
651 static int breakText(JNIEnv* env, const Paint& paint, Typeface* typeface, const jchar text[],
652 int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
653 const bool forwardScan) {
654 size_t measuredCount = 0;
657 std::unique_ptr<float[]> advancesArray(new float[count]);
658 MinikinUtils::measureText(&paint, bidiFlags, typeface, text, 0, count, count,
659 advancesArray.get());
661 for (int i = 0; i < count; i++) {
662 // traverse in the given direction
663 int index = forwardScan ? i : (count - i - 1);
664 float width = advancesArray[index];
665 if (measured + width > maxWidth) {
668 // properly handle clusters when scanning backwards
669 if (forwardScan || width != 0.0f) {
670 measuredCount = i + 1;
675 if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
676 AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
677 jfloat* array = autoMeasured.ptr();
680 return measuredCount;
683 static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray jtext,
684 jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
685 NPE_CHECK_RETURN_ZERO(env, jtext);
687 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
688 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
690 bool forwardTextDirection;
692 forwardTextDirection = false;
696 forwardTextDirection = true;
699 if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
704 const jchar* text = env->GetCharArrayElements(jtext, NULL);
705 count = breakText(env, *paint, typeface, text + index, count, maxWidth,
706 bidiFlags, jmeasuredWidth, forwardTextDirection);
707 env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
712 static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext,
713 jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
714 NPE_CHECK_RETURN_ZERO(env, jtext);
716 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
717 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
719 int count = env->GetStringLength(jtext);
720 const jchar* text = env->GetStringChars(jtext, NULL);
721 count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, forwards);
722 env->ReleaseStringChars(jtext, text);
726 static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
727 const Paint& paint, Typeface* typeface, jint bidiFlags) {
732 MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count);
734 layout.getBounds(&rect);
735 r.fLeft = rect.mLeft;
737 r.fRight = rect.mRight;
738 r.fBottom = rect.mBottom;
740 GraphicsJNI::irect_to_jrect(ir, env, bounds);
743 static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
744 jstring text, jint start, jint end, jint bidiFlags, jobject bounds) {
745 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
746 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
747 const jchar* textArray = env->GetStringChars(text, NULL);
748 doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
749 env->ReleaseStringChars(text, textArray);
752 static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle,
753 jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) {
754 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
755 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
756 const jchar* textArray = env->GetCharArrayElements(text, NULL);
757 doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
758 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
762 static jboolean layoutContainsNotdef(const Layout& layout) {
763 for (size_t i = 0; i < layout.nGlyphs(); i++) {
764 if (layout.getGlyphId(i) == 0) {
771 static jboolean hasGlyph(JNIEnv *env, jclass, jlong paintHandle, jlong typefaceHandle,
772 jint bidiFlags, jstring string) {
773 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
774 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
775 ScopedStringChars str(env, string);
777 /* Start by rejecting unsupported base code point and variation selector pairs. */
779 const uint32_t kStartOfString = 0xFFFFFFFF;
780 uint32_t prevCp = kStartOfString;
781 for (size_t i = 0; i < str.size(); i++) {
784 if (U16_IS_TRAIL(cu)) {
785 // invalid UTF-16, unpaired trailing surrogate
787 } else if (U16_IS_LEAD(cu)) {
788 if (i + 1 == str.size()) {
789 // invalid UTF-16, unpaired leading surrogate at end of string
794 if (!U16_IS_TRAIL(cu2)) {
795 // invalid UTF-16, unpaired leading surrogate
798 cp = U16_GET_SUPPLEMENTARY(cu, cu2);
801 if (prevCp != kStartOfString &&
802 ((0xFE00 <= cp && cp <= 0xFE0F) || (0xE0100 <= cp && cp <= 0xE01EF)) &&
803 !MinikinUtils::hasVariationSelector(typeface, prevCp, cp)) {
804 // No font has a glyph for the code point and variation selector pair.
811 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, str.get(), 0, str.size(),
813 size_t nGlyphs = layout.nGlyphs();
814 if (nGlyphs != 1 && nChars > 1) {
815 // multiple-character input, and was not a ligature
816 // TODO: handle ZWJ/ZWNJ characters specially so we can detect certain ligatures
817 // in joining scripts, such as Arabic and Mongolian.
820 return nGlyphs > 0 && !layoutContainsNotdef(layout);
823 static jfloat doRunAdvance(const Paint* paint, Typeface* typeface, const jchar buf[],
824 jint start, jint count, jint bufSize, jboolean isRtl, jint offset) {
825 int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
826 if (offset == start + count) {
827 return MinikinUtils::measureText(paint, bidiFlags, typeface, buf, start, count,
830 std::unique_ptr<float[]> advancesArray(new float[count]);
831 MinikinUtils::measureText(paint, bidiFlags, typeface, buf, start, count, bufSize,
832 advancesArray.get());
833 return getRunAdvance(advancesArray.get(), buf, start, count, offset);
836 static jfloat getRunAdvance___CIIIIZI_F(JNIEnv *env, jclass, jlong paintHandle,
837 jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
838 jint contextEnd, jboolean isRtl, jint offset) {
839 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
840 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
841 jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL);
842 jfloat result = doRunAdvance(paint, typeface, textArray + contextStart,
843 start - contextStart, end - start, contextEnd - contextStart, isRtl,
844 offset - contextStart);
845 env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
849 static jint doOffsetForAdvance(const Paint* paint, Typeface* typeface, const jchar buf[],
850 jint start, jint count, jint bufSize, jboolean isRtl, jfloat advance) {
851 int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR;
852 std::unique_ptr<float[]> advancesArray(new float[count]);
853 MinikinUtils::measureText(paint, bidiFlags, typeface, buf, start, count, bufSize,
854 advancesArray.get());
855 return getOffsetForAdvance(advancesArray.get(), buf, start, count, advance);
858 static jint getOffsetForAdvance___CIIIIZF_I(JNIEnv *env, jclass, jlong paintHandle,
859 jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart,
860 jint contextEnd, jboolean isRtl, jfloat advance) {
861 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
862 Typeface* typeface = reinterpret_cast<Typeface*>(typefaceHandle);
863 jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL);
864 jint result = doOffsetForAdvance(paint, typeface, textArray + contextStart,
865 start - contextStart, end - start, contextEnd - contextStart, isRtl, advance);
866 result += contextStart;
867 env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT);
871 }; // namespace PaintGlue
873 static const JNINativeMethod methods[] = {
874 {"nGetNativeFinalizer", "()J", (void*) PaintGlue::getNativeFinalizer},
875 {"nInit","()J", (void*) PaintGlue::init},
876 {"nInitWithPaint","(J)J", (void*) PaintGlue::initWithPaint},
878 {"nReset","!(J)V", (void*) PaintGlue::reset},
879 {"nSet","!(JJ)V", (void*) PaintGlue::assign},
880 {"nGetFlags","!(J)I", (void*) PaintGlue::getFlags},
881 {"nSetFlags","!(JI)V", (void*) PaintGlue::setFlags},
882 {"nGetHinting","!(J)I", (void*) PaintGlue::getHinting},
883 {"nSetHinting","!(JI)V", (void*) PaintGlue::setHinting},
884 {"nSetAntiAlias","!(JZ)V", (void*) PaintGlue::setAntiAlias},
885 {"nSetSubpixelText","!(JZ)V", (void*) PaintGlue::setSubpixelText},
886 {"nSetLinearText","!(JZ)V", (void*) PaintGlue::setLinearText},
887 {"nSetUnderlineText","!(JZ)V", (void*) PaintGlue::setUnderlineText},
888 {"nSetStrikeThruText","!(JZ)V", (void*) PaintGlue::setStrikeThruText},
889 {"nSetFakeBoldText","!(JZ)V", (void*) PaintGlue::setFakeBoldText},
890 {"nSetFilterBitmap","!(JZ)V", (void*) PaintGlue::setFilterBitmap},
891 {"nSetDither","!(JZ)V", (void*) PaintGlue::setDither},
892 {"nGetStyle","!(J)I", (void*) PaintGlue::getStyle},
893 {"nSetStyle","!(JI)V", (void*) PaintGlue::setStyle},
894 {"nGetColor","!(J)I", (void*) PaintGlue::getColor},
895 {"nSetColor","!(JI)V", (void*) PaintGlue::setColor},
896 {"nGetAlpha","!(J)I", (void*) PaintGlue::getAlpha},
897 {"nSetAlpha","!(JI)V", (void*) PaintGlue::setAlpha},
898 {"nGetStrokeWidth","!(J)F", (void*) PaintGlue::getStrokeWidth},
899 {"nSetStrokeWidth","!(JF)V", (void*) PaintGlue::setStrokeWidth},
900 {"nGetStrokeMiter","!(J)F", (void*) PaintGlue::getStrokeMiter},
901 {"nSetStrokeMiter","!(JF)V", (void*) PaintGlue::setStrokeMiter},
902 {"nGetStrokeCap","!(J)I", (void*) PaintGlue::getStrokeCap},
903 {"nSetStrokeCap","!(JI)V", (void*) PaintGlue::setStrokeCap},
904 {"nGetStrokeJoin","!(J)I", (void*) PaintGlue::getStrokeJoin},
905 {"nSetStrokeJoin","!(JI)V", (void*) PaintGlue::setStrokeJoin},
906 {"nGetFillPath","!(JJJ)Z", (void*) PaintGlue::getFillPath},
907 {"nSetShader","!(JJ)J", (void*) PaintGlue::setShader},
908 {"nSetColorFilter","!(JJ)J", (void*) PaintGlue::setColorFilter},
909 {"nSetXfermode","!(JJ)J", (void*) PaintGlue::setXfermode},
910 {"nSetPathEffect","!(JJ)J", (void*) PaintGlue::setPathEffect},
911 {"nSetMaskFilter","!(JJ)J", (void*) PaintGlue::setMaskFilter},
912 {"nSetTypeface","!(JJ)J", (void*) PaintGlue::setTypeface},
913 {"nSetRasterizer","!(JJ)J", (void*) PaintGlue::setRasterizer},
914 {"nGetTextAlign","!(J)I", (void*) PaintGlue::getTextAlign},
915 {"nSetTextAlign","!(JI)V", (void*) PaintGlue::setTextAlign},
916 {"nSetTextLocales","!(JLjava/lang/String;)I", (void*) PaintGlue::setTextLocales},
917 {"nSetTextLocalesByMinikinLangListId","!(JI)V",
918 (void*) PaintGlue::setTextLocalesByMinikinLangListId},
919 {"nIsElegantTextHeight","!(J)Z", (void*) PaintGlue::isElegantTextHeight},
920 {"nSetElegantTextHeight","!(JZ)V", (void*) PaintGlue::setElegantTextHeight},
921 {"nGetTextSize","!(J)F", (void*) PaintGlue::getTextSize},
922 {"nSetTextSize","!(JF)V", (void*) PaintGlue::setTextSize},
923 {"nGetTextScaleX","!(J)F", (void*) PaintGlue::getTextScaleX},
924 {"nSetTextScaleX","!(JF)V", (void*) PaintGlue::setTextScaleX},
925 {"nGetTextSkewX","!(J)F", (void*) PaintGlue::getTextSkewX},
926 {"nSetTextSkewX","!(JF)V", (void*) PaintGlue::setTextSkewX},
927 {"nGetLetterSpacing","!(J)F", (void*) PaintGlue::getLetterSpacing},
928 {"nSetLetterSpacing","!(JF)V", (void*) PaintGlue::setLetterSpacing},
929 {"nSetFontFeatureSettings","(JLjava/lang/String;)V",
930 (void*) PaintGlue::setFontFeatureSettings},
931 {"nGetHyphenEdit", "!(J)I", (void*) PaintGlue::getHyphenEdit},
932 {"nSetHyphenEdit", "!(JI)V", (void*) PaintGlue::setHyphenEdit},
933 {"nAscent","!(JJ)F", (void*) PaintGlue::ascent},
934 {"nDescent","!(JJ)F", (void*) PaintGlue::descent},
936 {"nGetFontMetrics", "!(JJLandroid/graphics/Paint$FontMetrics;)F",
937 (void*)PaintGlue::getFontMetrics},
938 {"nGetFontMetricsInt", "!(JJLandroid/graphics/Paint$FontMetricsInt;)I",
939 (void*)PaintGlue::getFontMetricsInt},
941 {"nBreakText","(JJ[CIIFI[F)I", (void*) PaintGlue::breakTextC},
942 {"nBreakText","(JJLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS},
943 {"nGetTextAdvances","(JJ[CIIIII[FI)F",
944 (void*) PaintGlue::getTextAdvances___CIIIII_FI},
945 {"nGetTextAdvances","(JJLjava/lang/String;IIIII[FI)F",
946 (void*) PaintGlue::getTextAdvances__StringIIIII_FI},
948 {"nGetTextRunCursor", "(J[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C},
949 {"nGetTextRunCursor", "(JLjava/lang/String;IIIII)I",
950 (void*) PaintGlue::getTextRunCursor__String},
951 {"nGetTextPath", "(JJI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C},
952 {"nGetTextPath", "(JJILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String},
953 {"nGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V",
954 (void*) PaintGlue::getStringBounds },
955 {"nGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V",
956 (void*) PaintGlue::getCharArrayBounds },
957 {"nHasGlyph", "(JJILjava/lang/String;)Z", (void*) PaintGlue::hasGlyph },
958 {"nGetRunAdvance", "(JJ[CIIIIZI)F", (void*) PaintGlue::getRunAdvance___CIIIIZI_F},
959 {"nGetOffsetForAdvance", "(JJ[CIIIIZF)I",
960 (void*) PaintGlue::getOffsetForAdvance___CIIIIZF_I},
962 {"nSetShadowLayer", "!(JFFFI)V", (void*)PaintGlue::setShadowLayer},
963 {"nHasShadowLayer", "!(J)Z", (void*)PaintGlue::hasShadowLayer}
966 int register_android_graphics_Paint(JNIEnv* env) {
967 gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics");
968 gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class);
970 gFontMetrics_fieldID.top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F");
971 gFontMetrics_fieldID.ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F");
972 gFontMetrics_fieldID.descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F");
973 gFontMetrics_fieldID.bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F");
974 gFontMetrics_fieldID.leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F");
976 gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt");
977 gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class);
979 gFontMetricsInt_fieldID.top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I");
980 gFontMetricsInt_fieldID.ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I");
981 gFontMetricsInt_fieldID.descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I");
982 gFontMetricsInt_fieldID.bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I");
983 gFontMetricsInt_fieldID.leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I");
985 return RegisterMethodsOrDie(env, "android/graphics/Paint", methods, NELEM(methods));