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 <nativehelper/ScopedStringChars.h>
26 #include <nativehelper/ScopedUtfChars.h>
27 #include <nativehelper/ScopedPrimitiveArray.h>
28
29 #include "SkBlurDrawLooper.h"
30 #include "SkColorFilter.h"
31 #include "SkMaskFilter.h"
32 #include "SkPath.h"
33 #include "SkPathEffect.h"
34 #include "SkShader.h"
35 #include "SkBlendMode.h"
36 #include "unicode/uloc.h"
37 #include "unicode/ushape.h"
38 #include "utils/Blur.h"
39
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/LocaleList.h>
46 #include <minikin/Measurement.h>
47 #include <unicode/utf16.h>
48
49 #include <cassert>
50 #include <cstring>
51 #include <memory>
52 #include <vector>
53
54 namespace android {
55
56 struct JMetricsID {
57 jfieldID top;
58 jfieldID ascent;
59 jfieldID descent;
60 jfieldID bottom;
61 jfieldID leading;
62 };
63
64 static jclass gFontMetrics_class;
65 static JMetricsID gFontMetrics_fieldID;
66
67 static jclass gFontMetricsInt_class;
68 static JMetricsID gFontMetricsInt_fieldID;
69
defaultSettingsForAndroid(Paint * paint)70 static void defaultSettingsForAndroid(Paint* paint) {
71 // GlyphID encoding is required because we are using Harfbuzz shaping
72 paint->setTextEncoding(Paint::kGlyphID_TextEncoding);
73 }
74
75 namespace PaintGlue {
76 enum MoveOpt {
77 AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT
78 };
79
deletePaint(Paint * paint)80 static void deletePaint(Paint* paint) {
81 delete paint;
82 }
83
getNativeFinalizer(JNIEnv *,jobject)84 static jlong getNativeFinalizer(JNIEnv*, jobject) {
85 return static_cast<jlong>(reinterpret_cast<uintptr_t>(&deletePaint));
86 }
87
init(JNIEnv * env,jobject)88 static jlong init(JNIEnv* env, jobject) {
89 static_assert(1 << 0 == SkPaint::kAntiAlias_Flag, "paint_flags_mismatch");
90 static_assert(1 << 2 == SkPaint::kDither_Flag, "paint_flags_mismatch");
91 static_assert(1 << 3 == SkPaint::kUnderlineText_ReserveFlag, "paint_flags_mismatch");
92 static_assert(1 << 4 == SkPaint::kStrikeThruText_ReserveFlag, "paint_flags_mismatch");
93 static_assert(1 << 5 == SkPaint::kFakeBoldText_Flag, "paint_flags_mismatch");
94 static_assert(1 << 6 == SkPaint::kLinearText_Flag, "paint_flags_mismatch");
95 static_assert(1 << 7 == SkPaint::kSubpixelText_Flag, "paint_flags_mismatch");
96 static_assert(1 << 8 == SkPaint::kDevKernText_Flag, "paint_flags_mismatch");
97 static_assert(1 << 10 == SkPaint::kEmbeddedBitmapText_Flag, "paint_flags_mismatch");
98
99 Paint* obj = new Paint();
100 defaultSettingsForAndroid(obj);
101 return reinterpret_cast<jlong>(obj);
102 }
103
initWithPaint(JNIEnv * env,jobject clazz,jlong paintHandle)104 static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) {
105 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
106 Paint* obj = new Paint(*paint);
107 return reinterpret_cast<jlong>(obj);
108 }
109
breakText(JNIEnv * env,const Paint & paint,const Typeface * typeface,const jchar text[],int count,float maxWidth,jint bidiFlags,jfloatArray jmeasured,const bool forwardScan)110 static int breakText(JNIEnv* env, const Paint& paint, const Typeface* typeface,
111 const jchar text[], int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured,
112 const bool forwardScan) {
113 size_t measuredCount = 0;
114 float measured = 0;
115
116 std::unique_ptr<float[]> advancesArray(new float[count]);
117 MinikinUtils::measureText(&paint, static_cast<minikin::Bidi>(bidiFlags), typeface, text,
118 0, count, count, advancesArray.get());
119
120 for (int i = 0; i < count; i++) {
121 // traverse in the given direction
122 int index = forwardScan ? i : (count - i - 1);
123 float width = advancesArray[index];
124 if (measured + width > maxWidth) {
125 break;
126 }
127 // properly handle clusters when scanning backwards
128 if (forwardScan || width != 0.0f) {
129 measuredCount = i + 1;
130 }
131 measured += width;
132 }
133
134 if (jmeasured && env->GetArrayLength(jmeasured) > 0) {
135 AutoJavaFloatArray autoMeasured(env, jmeasured, 1);
136 jfloat* array = autoMeasured.ptr();
137 array[0] = measured;
138 }
139 return measuredCount;
140 }
141
breakTextC(JNIEnv * env,jobject clazz,jlong paintHandle,jcharArray jtext,jint index,jint count,jfloat maxWidth,jint bidiFlags,jfloatArray jmeasuredWidth)142 static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray jtext,
143 jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
144 NPE_CHECK_RETURN_ZERO(env, jtext);
145
146 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
147 const Typeface* typeface = paint->getAndroidTypeface();
148
149 bool forwardTextDirection;
150 if (count < 0) {
151 forwardTextDirection = false;
152 count = -count;
153 }
154 else {
155 forwardTextDirection = true;
156 }
157
158 if ((index < 0) || (index + count > env->GetArrayLength(jtext))) {
159 doThrowAIOOBE(env);
160 return 0;
161 }
162
163 const jchar* text = env->GetCharArrayElements(jtext, nullptr);
164 count = breakText(env, *paint, typeface, text + index, count, maxWidth,
165 bidiFlags, jmeasuredWidth, forwardTextDirection);
166 env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text),
167 JNI_ABORT);
168 return count;
169 }
170
breakTextS(JNIEnv * env,jobject clazz,jlong paintHandle,jstring jtext,jboolean forwards,jfloat maxWidth,jint bidiFlags,jfloatArray jmeasuredWidth)171 static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jstring jtext,
172 jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) {
173 NPE_CHECK_RETURN_ZERO(env, jtext);
174
175 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
176 const Typeface* typeface = paint->getAndroidTypeface();
177
178 int count = env->GetStringLength(jtext);
179 const jchar* text = env->GetStringChars(jtext, nullptr);
180 count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, forwards);
181 env->ReleaseStringChars(jtext, text);
182 return count;
183 }
184
doTextAdvances(JNIEnv * env,Paint * paint,const Typeface * typeface,const jchar * text,jint start,jint count,jint contextCount,jint bidiFlags,jfloatArray advances,jint advancesIndex)185 static jfloat doTextAdvances(JNIEnv *env, Paint *paint, const Typeface* typeface,
186 const jchar *text, jint start, jint count, jint contextCount, jint bidiFlags,
187 jfloatArray advances, jint advancesIndex) {
188 NPE_CHECK_RETURN_ZERO(env, text);
189
190 if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) {
191 doThrowAIOOBE(env);
192 return 0;
193 }
194 if (count == 0) {
195 return 0;
196 }
197 if (advances) {
198 size_t advancesLength = env->GetArrayLength(advances);
199 if ((size_t)(count + advancesIndex) > advancesLength) {
200 doThrowAIOOBE(env);
201 return 0;
202 }
203 }
204 std::unique_ptr<jfloat[]> advancesArray;
205 if (advances) {
206 advancesArray.reset(new jfloat[count]);
207 }
208 const float advance = MinikinUtils::measureText(paint,
209 static_cast<minikin::Bidi>(bidiFlags), typeface, text, start, count, contextCount,
210 advancesArray.get());
211 if (advances) {
212 env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray.get());
213 }
214 return advance;
215 }
216
getTextAdvances___CIIIII_FI(JNIEnv * env,jobject clazz,jlong paintHandle,jcharArray text,jint index,jint count,jint contextIndex,jint contextCount,jint bidiFlags,jfloatArray advances,jint advancesIndex)217 static jfloat getTextAdvances___CIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
218 jcharArray text, jint index, jint count, jint contextIndex, jint contextCount,
219 jint bidiFlags, jfloatArray advances, jint advancesIndex) {
220 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
221 const Typeface* typeface = paint->getAndroidTypeface();
222 jchar* textArray = env->GetCharArrayElements(text, nullptr);
223 jfloat result = doTextAdvances(env, paint, typeface, textArray + contextIndex,
224 index - contextIndex, count, contextCount, bidiFlags, advances, advancesIndex);
225 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
226 return result;
227 }
228
getTextAdvances__StringIIIII_FI(JNIEnv * env,jobject clazz,jlong paintHandle,jstring text,jint start,jint end,jint contextStart,jint contextEnd,jint bidiFlags,jfloatArray advances,jint advancesIndex)229 static jfloat getTextAdvances__StringIIIII_FI(JNIEnv* env, jobject clazz, jlong paintHandle,
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 const Typeface* typeface = paint->getAndroidTypeface();
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
doTextRunCursor(JNIEnv * env,Paint * paint,const Typeface * typeface,const jchar * text,jint start,jint count,jint dir,jint offset,jint opt)242 static jint doTextRunCursor(JNIEnv *env, Paint* paint, const Typeface* typeface,
243 const jchar *text, jint start, jint count, jint dir, jint offset, jint opt) {
244 minikin::GraphemeBreak::MoveOpt moveOpt = minikin::GraphemeBreak::MoveOpt(opt);
245 minikin::Bidi bidiFlags = dir == 1 ? minikin::Bidi::FORCE_RTL : minikin::Bidi::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
getTextRunCursor___C(JNIEnv * env,jobject clazz,jlong paintHandle,jcharArray text,jint contextStart,jint contextCount,jint dir,jint offset,jint cursorOpt)254 static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text,
255 jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) {
256 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
257 const Typeface* typeface = paint->getAndroidTypeface();
258 jchar* textArray = env->GetCharArrayElements(text, nullptr);
259 jint result = doTextRunCursor(env, paint, typeface, textArray,
260 contextStart, contextCount, dir, offset, cursorOpt);
261 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
262 return result;
263 }
264
getTextRunCursor__String(JNIEnv * env,jobject clazz,jlong paintHandle,jstring text,jint contextStart,jint contextEnd,jint dir,jint offset,jint cursorOpt)265 static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle,
266 jstring text, jint contextStart, jint contextEnd, jint dir, jint offset,
267 jint cursorOpt) {
268 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
269 const Typeface* typeface = paint->getAndroidTypeface();
270 const jchar* textArray = env->GetStringChars(text, nullptr);
271 jint result = doTextRunCursor(env, paint, typeface, textArray,
272 contextStart, contextEnd - contextStart, dir, offset, cursorOpt);
273 env->ReleaseStringChars(text, textArray);
274 return result;
275 }
276
277 class GetTextFunctor {
278 public:
GetTextFunctor(const minikin::Layout & layout,SkPath * path,jfloat x,jfloat y,Paint * paint,uint16_t * glyphs,SkPoint * pos)279 GetTextFunctor(const minikin::Layout& layout, SkPath* path, jfloat x, jfloat y,
280 Paint* paint, uint16_t* glyphs, SkPoint* pos)
281 : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) {
282 }
283
operator ()(size_t start,size_t end)284 void operator()(size_t start, size_t end) {
285 for (size_t i = start; i < end; i++) {
286 glyphs[i] = layout.getGlyphId(i);
287 pos[i].fX = x + layout.getX(i);
288 pos[i].fY = y + layout.getY(i);
289 }
290 if (start == 0) {
291 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path);
292 } else {
293 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath);
294 path->addPath(tmpPath);
295 }
296 }
297 private:
298 const minikin::Layout& layout;
299 SkPath* path;
300 jfloat x;
301 jfloat y;
302 Paint* paint;
303 uint16_t* glyphs;
304 SkPoint* pos;
305 SkPath tmpPath;
306 };
307
getTextPath(JNIEnv * env,Paint * paint,const Typeface * typeface,const jchar * text,jint count,jint bidiFlags,jfloat x,jfloat y,SkPath * path)308 static void getTextPath(JNIEnv* env, Paint* paint, const Typeface* typeface, const jchar* text,
309 jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) {
310 minikin::Layout layout = MinikinUtils::doLayout(
311 paint, static_cast<minikin::Bidi>(bidiFlags), typeface, text, 0, count, count,
312 nullptr);
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
getTextPath___C(JNIEnv * env,jobject clazz,jlong paintHandle,jint bidiFlags,jcharArray text,jint index,jint count,jfloat x,jfloat y,jlong pathHandle)328 static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle, jint bidiFlags,
329 jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) {
330 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
331 const Typeface* typeface = paint->getAndroidTypeface();
332 SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
333 const jchar* textArray = env->GetCharArrayElements(text, nullptr);
334 getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path);
335 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT);
336 }
337
getTextPath__String(JNIEnv * env,jobject clazz,jlong paintHandle,jint bidiFlags,jstring text,jint start,jint end,jfloat x,jfloat y,jlong pathHandle)338 static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle, jint bidiFlags,
339 jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) {
340 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
341 const Typeface* typeface = paint->getAndroidTypeface();
342 SkPath* path = reinterpret_cast<SkPath*>(pathHandle);
343 const jchar* textArray = env->GetStringChars(text, nullptr);
344 getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path);
345 env->ReleaseStringChars(text, textArray);
346 }
347
doTextBounds(JNIEnv * env,const jchar * text,int count,jobject bounds,const Paint & paint,const Typeface * typeface,jint bidiFlags)348 static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds,
349 const Paint& paint, const Typeface* typeface, jint bidiFlags) {
350 SkRect r;
351 SkIRect ir;
352
353 minikin::Layout layout = MinikinUtils::doLayout(&paint,
354 static_cast<minikin::Bidi>(bidiFlags), typeface, text, 0, count, count, nullptr);
355 minikin::MinikinRect rect;
356 layout.getBounds(&rect);
357 r.fLeft = rect.mLeft;
358 r.fTop = rect.mTop;
359 r.fRight = rect.mRight;
360 r.fBottom = rect.mBottom;
361 r.roundOut(&ir);
362 GraphicsJNI::irect_to_jrect(ir, env, bounds);
363 }
364
getStringBounds(JNIEnv * env,jobject,jlong paintHandle,jstring text,jint start,jint end,jint bidiFlags,jobject bounds)365 static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jstring text, jint start,
366 jint end, jint bidiFlags, jobject bounds) {
367 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
368 const Typeface* typeface = paint->getAndroidTypeface();
369 const jchar* textArray = env->GetStringChars(text, nullptr);
370 doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags);
371 env->ReleaseStringChars(text, textArray);
372 }
373
getCharArrayBounds(JNIEnv * env,jobject,jlong paintHandle,jcharArray text,jint index,jint count,jint bidiFlags,jobject bounds)374 static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jcharArray text,
375 jint index, jint count, jint bidiFlags, jobject bounds) {
376 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
377 const Typeface* typeface = paint->getAndroidTypeface();
378 const jchar* textArray = env->GetCharArrayElements(text, nullptr);
379 doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags);
380 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray),
381 JNI_ABORT);
382 }
383
384 // Returns true if the given string is exact one pair of regional indicators.
isFlag(const jchar * str,size_t length)385 static bool isFlag(const jchar* str, size_t length) {
386 const jchar RI_LEAD_SURROGATE = 0xD83C;
387 const jchar RI_TRAIL_SURROGATE_MIN = 0xDDE6;
388 const jchar RI_TRAIL_SURROGATE_MAX = 0xDDFF;
389
390 if (length != 4) {
391 return false;
392 }
393 if (str[0] != RI_LEAD_SURROGATE || str[2] != RI_LEAD_SURROGATE) {
394 return false;
395 }
396 return RI_TRAIL_SURROGATE_MIN <= str[1] && str[1] <= RI_TRAIL_SURROGATE_MAX &&
397 RI_TRAIL_SURROGATE_MIN <= str[3] && str[3] <= RI_TRAIL_SURROGATE_MAX;
398 }
399
layoutContainsNotdef(const minikin::Layout & layout)400 static jboolean layoutContainsNotdef(const minikin::Layout& layout) {
401 for (size_t i = 0; i < layout.nGlyphs(); i++) {
402 if (layout.getGlyphId(i) == 0) {
403 return true;
404 }
405 }
406 return false;
407 }
408
409 // Don't count glyphs that are the recommended "space" glyph and are zero width.
410 // This logic makes assumptions about HarfBuzz layout, but does correctly handle
411 // cases where ligatures form and zero width space glyphs are left in as
412 // placeholders.
countNonSpaceGlyphs(const minikin::Layout & layout)413 static size_t countNonSpaceGlyphs(const minikin::Layout& layout) {
414 size_t count = 0;
415 static unsigned int kSpaceGlyphId = 3;
416 for (size_t i = 0; i < layout.nGlyphs(); i++) {
417 if (layout.getGlyphId(i) != kSpaceGlyphId || layout.getCharAdvance(i) != 0.0) {
418 count++;
419 }
420 }
421 return count;
422 }
423
hasGlyph(JNIEnv * env,jclass,jlong paintHandle,jint bidiFlags,jstring string)424 static jboolean hasGlyph(JNIEnv *env, jclass, jlong paintHandle, jint bidiFlags,
425 jstring string) {
426 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
427 const Typeface* typeface = paint->getAndroidTypeface();
428 ScopedStringChars str(env, string);
429
430 /* Start by rejecting unsupported base code point and variation selector pairs. */
431 size_t nChars = 0;
432 const uint32_t kStartOfString = 0xFFFFFFFF;
433 uint32_t prevCp = kStartOfString;
434 for (size_t i = 0; i < str.size(); i++) {
435 jchar cu = str[i];
436 uint32_t cp = cu;
437 if (U16_IS_TRAIL(cu)) {
438 // invalid UTF-16, unpaired trailing surrogate
439 return false;
440 } else if (U16_IS_LEAD(cu)) {
441 if (i + 1 == str.size()) {
442 // invalid UTF-16, unpaired leading surrogate at end of string
443 return false;
444 }
445 i++;
446 jchar cu2 = str[i];
447 if (!U16_IS_TRAIL(cu2)) {
448 // invalid UTF-16, unpaired leading surrogate
449 return false;
450 }
451 cp = U16_GET_SUPPLEMENTARY(cu, cu2);
452 }
453
454 if (prevCp != kStartOfString &&
455 ((0xFE00 <= cp && cp <= 0xFE0F) || (0xE0100 <= cp && cp <= 0xE01EF))) {
456 bool hasVS = MinikinUtils::hasVariationSelector(typeface, prevCp, cp);
457 if (!hasVS) {
458 // No font has a glyph for the code point and variation selector pair.
459 return false;
460 } else if (nChars == 1 && i + 1 == str.size()) {
461 // The string is just a codepoint and a VS, we have an authoritative answer
462 return true;
463 }
464 }
465 nChars++;
466 prevCp = cp;
467 }
468 minikin::Layout layout = MinikinUtils::doLayout(paint,
469 static_cast<minikin::Bidi>(bidiFlags), typeface, str.get(), 0, str.size(),
470 str.size(), nullptr);
471 size_t nGlyphs = countNonSpaceGlyphs(layout);
472 if (nGlyphs != 1 && nChars > 1) {
473 // multiple-character input, and was not a ligature
474 // TODO: handle ZWJ/ZWNJ characters specially so we can detect certain ligatures
475 // in joining scripts, such as Arabic and Mongolian.
476 return false;
477 }
478
479 if (nGlyphs == 0 || layoutContainsNotdef(layout)) {
480 return false; // The collection doesn't have a glyph.
481 }
482
483 if (nChars == 2 && isFlag(str.get(), str.size())) {
484 // Some font may have a special glyph for unsupported regional indicator pairs.
485 // To return false for this case, need to compare the glyph id with the one of ZZ
486 // since ZZ is reserved for unknown or invalid territory.
487 // U+1F1FF (REGIONAL INDICATOR SYMBOL LETTER Z) is \uD83C\uDDFF in UTF16.
488 static const jchar ZZ_FLAG_STR[] = { 0xD83C, 0xDDFF, 0xD83C, 0xDDFF };
489 minikin::Layout zzLayout = MinikinUtils::doLayout(paint,
490 static_cast<minikin::Bidi>(bidiFlags), typeface, ZZ_FLAG_STR, 0, 4, 4,
491 nullptr);
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
doRunAdvance(const Paint * paint,const Typeface * typeface,const jchar buf[],jint start,jint count,jint bufSize,jboolean isRtl,jint offset)501 static jfloat doRunAdvance(const Paint* paint, const Typeface* typeface, const jchar buf[],
502 jint start, jint count, jint bufSize, jboolean isRtl, jint offset) {
503 minikin::Bidi bidiFlags = isRtl ? minikin::Bidi::FORCE_RTL : minikin::Bidi::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
getRunAdvance___CIIIIZI_F(JNIEnv * env,jclass,jlong paintHandle,jcharArray text,jint start,jint end,jint contextStart,jint contextEnd,jboolean isRtl,jint offset)514 static jfloat getRunAdvance___CIIIIZI_F(JNIEnv *env, jclass, jlong paintHandle, jcharArray text,
515 jint start, jint end, jint contextStart, jint contextEnd, jboolean isRtl, jint offset) {
516 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
517 const Typeface* typeface = paint->getAndroidTypeface();
518 ScopedCharArrayRO textArray(env, text);
519 jfloat result = doRunAdvance(paint, typeface, textArray.get() + contextStart,
520 start - contextStart, end - start, contextEnd - contextStart, isRtl,
521 offset - contextStart);
522 return result;
523 }
524
doOffsetForAdvance(const Paint * paint,const Typeface * typeface,const jchar buf[],jint start,jint count,jint bufSize,jboolean isRtl,jfloat advance)525 static jint doOffsetForAdvance(const Paint* paint, const Typeface* typeface, const jchar buf[],
526 jint start, jint count, jint bufSize, jboolean isRtl, jfloat advance) {
527 minikin::Bidi bidiFlags = isRtl ? minikin::Bidi::FORCE_RTL : minikin::Bidi::FORCE_LTR;
528 std::unique_ptr<float[]> advancesArray(new float[count]);
529 MinikinUtils::measureText(paint, bidiFlags, typeface, buf, start, count, bufSize,
530 advancesArray.get());
531 return minikin::getOffsetForAdvance(advancesArray.get(), buf, start, count, advance);
532 }
533
getOffsetForAdvance___CIIIIZF_I(JNIEnv * env,jclass,jlong paintHandle,jcharArray text,jint start,jint end,jint contextStart,jint contextEnd,jboolean isRtl,jfloat advance)534 static jint getOffsetForAdvance___CIIIIZF_I(JNIEnv *env, jclass, jlong paintHandle,
535 jcharArray text, jint start, jint end, jint contextStart, jint contextEnd,
536 jboolean isRtl, jfloat advance) {
537 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
538 const Typeface* typeface = paint->getAndroidTypeface();
539 ScopedCharArrayRO textArray(env, text);
540 jint result = doOffsetForAdvance(paint, typeface, textArray.get() + contextStart,
541 start - contextStart, end - start, contextEnd - contextStart, isRtl, advance);
542 result += contextStart;
543 return result;
544 }
545
546 // ------------------ @FastNative ---------------------------
547
setTextLocales(JNIEnv * env,jobject clazz,jlong objHandle,jstring locales)548 static jint setTextLocales(JNIEnv* env, jobject clazz, jlong objHandle, jstring locales) {
549 Paint* obj = reinterpret_cast<Paint*>(objHandle);
550 ScopedUtfChars localesChars(env, locales);
551 jint minikinLocaleListId = minikin::registerLocaleList(localesChars.c_str());
552 obj->setMinikinLocaleListId(minikinLocaleListId);
553 return minikinLocaleListId;
554 }
555
setFontFeatureSettings(JNIEnv * env,jobject clazz,jlong paintHandle,jstring settings)556 static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) {
557 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
558 if (!settings) {
559 paint->setFontFeatureSettings(std::string());
560 } else {
561 ScopedUtfChars settingsChars(env, settings);
562 paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size()));
563 }
564 }
565
getMetricsInternal(jlong paintHandle,Paint::FontMetrics * metrics)566 static SkScalar getMetricsInternal(jlong paintHandle, Paint::FontMetrics *metrics) {
567 const int kElegantTop = 2500;
568 const int kElegantBottom = -1000;
569 const int kElegantAscent = 1900;
570 const int kElegantDescent = -500;
571 const int kElegantLeading = 0;
572 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
573 const Typeface* typeface = paint->getAndroidTypeface();
574 typeface = Typeface::resolveDefault(typeface);
575 minikin::FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle);
576 float saveSkewX = paint->getTextSkewX();
577 bool savefakeBold = paint->isFakeBoldText();
578 MinikinFontSkia::populateSkPaint(paint, baseFont.font->typeface().get(), baseFont.fakery);
579 SkScalar spacing = paint->getFontMetrics(metrics);
580 // The populateSkPaint call may have changed fake bold / text skew
581 // because we want to measure with those effects applied, so now
582 // restore the original settings.
583 paint->setTextSkewX(saveSkewX);
584 paint->setFakeBoldText(savefakeBold);
585 if (paint->getFamilyVariant() == minikin::FontFamily::Variant::ELEGANT) {
586 SkScalar size = paint->getTextSize();
587 metrics->fTop = -size * kElegantTop / 2048;
588 metrics->fBottom = -size * kElegantBottom / 2048;
589 metrics->fAscent = -size * kElegantAscent / 2048;
590 metrics->fDescent = -size * kElegantDescent / 2048;
591 metrics->fLeading = size * kElegantLeading / 2048;
592 spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading;
593 }
594 return spacing;
595 }
596
getFontMetrics(JNIEnv * env,jobject,jlong paintHandle,jobject metricsObj)597 static jfloat getFontMetrics(JNIEnv* env, jobject, jlong paintHandle, jobject metricsObj) {
598 Paint::FontMetrics metrics;
599 SkScalar spacing = getMetricsInternal(paintHandle, &metrics);
600
601 if (metricsObj) {
602 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class));
603 env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop));
604 env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent));
605 env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent));
606 env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom));
607 env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading));
608 }
609 return SkScalarToFloat(spacing);
610 }
611
getFontMetricsInt(JNIEnv * env,jobject,jlong paintHandle,jobject metricsObj)612 static jint getFontMetricsInt(JNIEnv* env, jobject, jlong paintHandle, jobject metricsObj) {
613 Paint::FontMetrics metrics;
614
615 getMetricsInternal(paintHandle, &metrics);
616 int ascent = SkScalarRoundToInt(metrics.fAscent);
617 int descent = SkScalarRoundToInt(metrics.fDescent);
618 int leading = SkScalarRoundToInt(metrics.fLeading);
619
620 if (metricsObj) {
621 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class));
622 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop));
623 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent);
624 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent);
625 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom));
626 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading);
627 }
628 return descent - ascent + leading;
629 }
630
631
632 // ------------------ @CriticalNative ---------------------------
633
reset(jlong objHandle)634 static void reset(jlong objHandle) {
635 Paint* obj = reinterpret_cast<Paint*>(objHandle);
636 obj->reset();
637 defaultSettingsForAndroid(obj);
638 }
639
assign(jlong dstPaintHandle,jlong srcPaintHandle)640 static void assign(jlong dstPaintHandle, jlong srcPaintHandle) {
641 Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle);
642 const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle);
643 *dst = *src;
644 }
645
646 // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
647 static const uint32_t sFilterBitmapFlag = 0x02;
648
getFlags(jlong paintHandle)649 static jint getFlags(jlong paintHandle) {
650 Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
651 uint32_t result = nativePaint->getFlags();
652 result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away.
653 if (nativePaint->getFilterQuality() != kNone_SkFilterQuality) {
654 result |= sFilterBitmapFlag;
655 }
656 return static_cast<jint>(result);
657 }
658
setFlags(jlong paintHandle,jint flags)659 static void setFlags(jlong paintHandle, jint flags) {
660 Paint* nativePaint = reinterpret_cast<Paint*>(paintHandle);
661 // Instead of modifying 0x02, change the filter level.
662 nativePaint->setFilterQuality(flags & sFilterBitmapFlag
663 ? kLow_SkFilterQuality
664 : kNone_SkFilterQuality);
665 // Don't pass through filter flag, which is no longer stored in paint's flags.
666 flags &= ~sFilterBitmapFlag;
667 // Use the existing value for 0x02.
668 const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag;
669 flags |= existing0x02Flag;
670 nativePaint->setFlags(flags);
671 }
672
getHinting(jlong paintHandle)673 static jint getHinting(jlong paintHandle) {
674 return reinterpret_cast<Paint*>(paintHandle)->getHinting()
675 == Paint::kNo_Hinting ? 0 : 1;
676 }
677
setHinting(jlong paintHandle,jint mode)678 static void setHinting(jlong paintHandle, jint mode) {
679 reinterpret_cast<Paint*>(paintHandle)->setHinting(
680 mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting);
681 }
682
setAntiAlias(jlong paintHandle,jboolean aa)683 static void setAntiAlias(jlong paintHandle, jboolean aa) {
684 reinterpret_cast<Paint*>(paintHandle)->setAntiAlias(aa);
685 }
686
setLinearText(jlong paintHandle,jboolean linearText)687 static void setLinearText(jlong paintHandle, jboolean linearText) {
688 reinterpret_cast<Paint*>(paintHandle)->setLinearText(linearText);
689 }
690
setSubpixelText(jlong paintHandle,jboolean subpixelText)691 static void setSubpixelText(jlong paintHandle, jboolean subpixelText) {
692 reinterpret_cast<Paint*>(paintHandle)->setSubpixelText(subpixelText);
693 }
694
setUnderlineText(jlong paintHandle,jboolean underlineText)695 static void setUnderlineText(jlong paintHandle, jboolean underlineText) {
696 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
697 uint32_t flags = paint->getFlags();
698 if (underlineText) {
699 flags |= Paint::kUnderlineText_ReserveFlag;
700 } else {
701 flags &= ~Paint::kUnderlineText_ReserveFlag;
702 }
703 paint->setFlags(flags);
704 }
705
setStrikeThruText(jlong paintHandle,jboolean strikeThruText)706 static void setStrikeThruText(jlong paintHandle, jboolean strikeThruText) {
707 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
708 uint32_t flags = paint->getFlags();
709 if (strikeThruText) {
710 flags |= Paint::kStrikeThruText_ReserveFlag;
711 } else {
712 flags &= ~Paint::kStrikeThruText_ReserveFlag;
713 }
714 paint->setFlags(flags);
715 }
716
setFakeBoldText(jlong paintHandle,jboolean fakeBoldText)717 static void setFakeBoldText(jlong paintHandle, jboolean fakeBoldText) {
718 reinterpret_cast<Paint*>(paintHandle)->setFakeBoldText(fakeBoldText);
719 }
720
setFilterBitmap(jlong paintHandle,jboolean filterBitmap)721 static void setFilterBitmap(jlong paintHandle, jboolean filterBitmap) {
722 reinterpret_cast<Paint*>(paintHandle)->setFilterQuality(
723 filterBitmap ? kLow_SkFilterQuality : kNone_SkFilterQuality);
724 }
725
setDither(jlong paintHandle,jboolean dither)726 static void setDither(jlong paintHandle, jboolean dither) {
727 reinterpret_cast<Paint*>(paintHandle)->setDither(dither);
728 }
729
getStyle(jlong objHandle)730 static jint getStyle(jlong objHandle) {
731 Paint* obj = reinterpret_cast<Paint*>(objHandle);
732 return static_cast<jint>(obj->getStyle());
733 }
734
setStyle(jlong objHandle,jint styleHandle)735 static void setStyle(jlong objHandle, jint styleHandle) {
736 Paint* obj = reinterpret_cast<Paint*>(objHandle);
737 Paint::Style style = static_cast<Paint::Style>(styleHandle);
738 obj->setStyle(style);
739 }
740
getColor(jlong paintHandle)741 static jint getColor(jlong paintHandle) {
742 int color;
743 color = reinterpret_cast<Paint*>(paintHandle)->getColor();
744 return static_cast<jint>(color);
745 }
746
getAlpha(jlong paintHandle)747 static jint getAlpha(jlong paintHandle) {
748 int alpha;
749 alpha = reinterpret_cast<Paint*>(paintHandle)->getAlpha();
750 return static_cast<jint>(alpha);
751 }
752
setColor(jlong paintHandle,jint color)753 static void setColor(jlong paintHandle, jint color) {
754 reinterpret_cast<Paint*>(paintHandle)->setColor(color);
755 }
756
setAlpha(jlong paintHandle,jint a)757 static void setAlpha(jlong paintHandle, jint a) {
758 reinterpret_cast<Paint*>(paintHandle)->setAlpha(a);
759 }
760
getStrokeWidth(jlong paintHandle)761 static jfloat getStrokeWidth(jlong paintHandle) {
762 return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeWidth());
763 }
764
setStrokeWidth(jlong paintHandle,jfloat width)765 static void setStrokeWidth(jlong paintHandle, jfloat width) {
766 reinterpret_cast<Paint*>(paintHandle)->setStrokeWidth(width);
767 }
768
getStrokeMiter(jlong paintHandle)769 static jfloat getStrokeMiter(jlong paintHandle) {
770 return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getStrokeMiter());
771 }
772
setStrokeMiter(jlong paintHandle,jfloat miter)773 static void setStrokeMiter(jlong paintHandle, jfloat miter) {
774 reinterpret_cast<Paint*>(paintHandle)->setStrokeMiter(miter);
775 }
776
getStrokeCap(jlong objHandle)777 static jint getStrokeCap(jlong objHandle) {
778 Paint* obj = reinterpret_cast<Paint*>(objHandle);
779 return static_cast<jint>(obj->getStrokeCap());
780 }
781
setStrokeCap(jlong objHandle,jint capHandle)782 static void setStrokeCap(jlong objHandle, jint capHandle) {
783 Paint* obj = reinterpret_cast<Paint*>(objHandle);
784 Paint::Cap cap = static_cast<Paint::Cap>(capHandle);
785 obj->setStrokeCap(cap);
786 }
787
getStrokeJoin(jlong objHandle)788 static jint getStrokeJoin(jlong objHandle) {
789 Paint* obj = reinterpret_cast<Paint*>(objHandle);
790 return static_cast<jint>(obj->getStrokeJoin());
791 }
792
setStrokeJoin(jlong objHandle,jint joinHandle)793 static void setStrokeJoin(jlong objHandle, jint joinHandle) {
794 Paint* obj = reinterpret_cast<Paint*>(objHandle);
795 Paint::Join join = (Paint::Join) joinHandle;
796 obj->setStrokeJoin(join);
797 }
798
getFillPath(jlong objHandle,jlong srcHandle,jlong dstHandle)799 static jboolean getFillPath(jlong objHandle, jlong srcHandle, jlong dstHandle) {
800 Paint* obj = reinterpret_cast<Paint*>(objHandle);
801 SkPath* src = reinterpret_cast<SkPath*>(srcHandle);
802 SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
803 return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE;
804 }
805
setShader(jlong objHandle,jlong shaderHandle)806 static jlong setShader(jlong objHandle, jlong shaderHandle) {
807 Paint* obj = reinterpret_cast<Paint*>(objHandle);
808 SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle);
809 obj->setShader(sk_ref_sp(shader));
810 return reinterpret_cast<jlong>(obj->getShader());
811 }
812
setColorFilter(jlong objHandle,jlong filterHandle)813 static jlong setColorFilter(jlong objHandle, jlong filterHandle) {
814 Paint* obj = reinterpret_cast<Paint *>(objHandle);
815 SkColorFilter* filter = reinterpret_cast<SkColorFilter *>(filterHandle);
816 obj->setColorFilter(sk_ref_sp(filter));
817 return reinterpret_cast<jlong>(obj->getColorFilter());
818 }
819
setXfermode(jlong paintHandle,jint xfermodeHandle)820 static void setXfermode(jlong paintHandle, jint xfermodeHandle) {
821 // validate that the Java enum values match our expectations
822 static_assert(0 == static_cast<int>(SkBlendMode::kClear), "xfermode_mismatch");
823 static_assert(1 == static_cast<int>(SkBlendMode::kSrc), "xfermode_mismatch");
824 static_assert(2 == static_cast<int>(SkBlendMode::kDst), "xfermode_mismatch");
825 static_assert(3 == static_cast<int>(SkBlendMode::kSrcOver), "xfermode_mismatch");
826 static_assert(4 == static_cast<int>(SkBlendMode::kDstOver), "xfermode_mismatch");
827 static_assert(5 == static_cast<int>(SkBlendMode::kSrcIn), "xfermode_mismatch");
828 static_assert(6 == static_cast<int>(SkBlendMode::kDstIn), "xfermode_mismatch");
829 static_assert(7 == static_cast<int>(SkBlendMode::kSrcOut), "xfermode_mismatch");
830 static_assert(8 == static_cast<int>(SkBlendMode::kDstOut), "xfermode_mismatch");
831 static_assert(9 == static_cast<int>(SkBlendMode::kSrcATop), "xfermode_mismatch");
832 static_assert(10 == static_cast<int>(SkBlendMode::kDstATop), "xfermode_mismatch");
833 static_assert(11 == static_cast<int>(SkBlendMode::kXor), "xfermode_mismatch");
834 static_assert(16 == static_cast<int>(SkBlendMode::kDarken), "xfermode_mismatch");
835 static_assert(17 == static_cast<int>(SkBlendMode::kLighten), "xfermode_mismatch");
836 static_assert(13 == static_cast<int>(SkBlendMode::kModulate), "xfermode_mismatch");
837 static_assert(14 == static_cast<int>(SkBlendMode::kScreen), "xfermode_mismatch");
838 static_assert(12 == static_cast<int>(SkBlendMode::kPlus), "xfermode_mismatch");
839 static_assert(15 == static_cast<int>(SkBlendMode::kOverlay), "xfermode_mismatch");
840
841 SkBlendMode mode = static_cast<SkBlendMode>(xfermodeHandle);
842 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
843 paint->setBlendMode(mode);
844 }
845
setPathEffect(jlong objHandle,jlong effectHandle)846 static jlong setPathEffect(jlong objHandle, jlong effectHandle) {
847 Paint* obj = reinterpret_cast<Paint*>(objHandle);
848 SkPathEffect* effect = reinterpret_cast<SkPathEffect*>(effectHandle);
849 obj->setPathEffect(sk_ref_sp(effect));
850 return reinterpret_cast<jlong>(obj->getPathEffect());
851 }
852
setMaskFilter(jlong objHandle,jlong maskfilterHandle)853 static jlong setMaskFilter(jlong objHandle, jlong maskfilterHandle) {
854 Paint* obj = reinterpret_cast<Paint*>(objHandle);
855 SkMaskFilter* maskfilter = reinterpret_cast<SkMaskFilter*>(maskfilterHandle);
856 obj->setMaskFilter(sk_ref_sp(maskfilter));
857 return reinterpret_cast<jlong>(obj->getMaskFilter());
858 }
859
setTypeface(jlong objHandle,jlong typefaceHandle)860 static void setTypeface(jlong objHandle, jlong typefaceHandle) {
861 Paint* paint = reinterpret_cast<Paint*>(objHandle);
862 paint->setAndroidTypeface(reinterpret_cast<Typeface*>(typefaceHandle));
863 }
864
getTextAlign(jlong objHandle)865 static jint getTextAlign(jlong objHandle) {
866 Paint* obj = reinterpret_cast<Paint*>(objHandle);
867 return static_cast<jint>(obj->getTextAlign());
868 }
869
setTextAlign(jlong objHandle,jint alignHandle)870 static void setTextAlign(jlong objHandle, jint alignHandle) {
871 Paint* obj = reinterpret_cast<Paint*>(objHandle);
872 Paint::Align align = static_cast<Paint::Align>(alignHandle);
873 obj->setTextAlign(align);
874 }
875
setTextLocalesByMinikinLocaleListId(jlong objHandle,jint minikinLocaleListId)876 static void setTextLocalesByMinikinLocaleListId(jlong objHandle,
877 jint minikinLocaleListId) {
878 Paint* obj = reinterpret_cast<Paint*>(objHandle);
879 obj->setMinikinLocaleListId(minikinLocaleListId);
880 }
881
isElegantTextHeight(jlong paintHandle)882 static jboolean isElegantTextHeight(jlong paintHandle) {
883 Paint* obj = reinterpret_cast<Paint*>(paintHandle);
884 return obj->getFamilyVariant() == minikin::FontFamily::Variant::ELEGANT;
885 }
886
setElegantTextHeight(jlong paintHandle,jboolean aa)887 static void setElegantTextHeight(jlong paintHandle, jboolean aa) {
888 Paint* obj = reinterpret_cast<Paint*>(paintHandle);
889 obj->setFamilyVariant(
890 aa ? minikin::FontFamily::Variant::ELEGANT : minikin::FontFamily::Variant::DEFAULT);
891 }
892
getTextSize(jlong paintHandle)893 static jfloat getTextSize(jlong paintHandle) {
894 return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSize());
895 }
896
setTextSize(jlong paintHandle,jfloat textSize)897 static void setTextSize(jlong paintHandle, jfloat textSize) {
898 reinterpret_cast<Paint*>(paintHandle)->setTextSize(textSize);
899 }
900
getTextScaleX(jlong paintHandle)901 static jfloat getTextScaleX(jlong paintHandle) {
902 return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextScaleX());
903 }
904
setTextScaleX(jlong paintHandle,jfloat scaleX)905 static void setTextScaleX(jlong paintHandle, jfloat scaleX) {
906 reinterpret_cast<Paint*>(paintHandle)->setTextScaleX(scaleX);
907 }
908
getTextSkewX(jlong paintHandle)909 static jfloat getTextSkewX(jlong paintHandle) {
910 return SkScalarToFloat(reinterpret_cast<Paint*>(paintHandle)->getTextSkewX());
911 }
912
setTextSkewX(jlong paintHandle,jfloat skewX)913 static void setTextSkewX(jlong paintHandle, jfloat skewX) {
914 reinterpret_cast<Paint*>(paintHandle)->setTextSkewX(skewX);
915 }
916
getLetterSpacing(jlong paintHandle)917 static jfloat getLetterSpacing(jlong paintHandle) {
918 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
919 return paint->getLetterSpacing();
920 }
921
setLetterSpacing(jlong paintHandle,jfloat letterSpacing)922 static void setLetterSpacing(jlong paintHandle, jfloat letterSpacing) {
923 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
924 paint->setLetterSpacing(letterSpacing);
925 }
926
getWordSpacing(jlong paintHandle)927 static jfloat getWordSpacing(jlong paintHandle) {
928 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
929 return paint->getWordSpacing();
930 }
931
setWordSpacing(jlong paintHandle,jfloat wordSpacing)932 static void setWordSpacing(jlong paintHandle, jfloat wordSpacing) {
933 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
934 paint->setWordSpacing(wordSpacing);
935 }
936
getHyphenEdit(jlong paintHandle,jint hyphen)937 static jint getHyphenEdit(jlong paintHandle, jint hyphen) {
938 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
939 return paint->getHyphenEdit();
940 }
941
setHyphenEdit(jlong paintHandle,jint hyphen)942 static void setHyphenEdit(jlong paintHandle, jint hyphen) {
943 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
944 paint->setHyphenEdit((uint32_t)hyphen);
945 }
946
ascent(jlong paintHandle)947 static jfloat ascent(jlong paintHandle) {
948 Paint::FontMetrics metrics;
949 getMetricsInternal(paintHandle, &metrics);
950 return SkScalarToFloat(metrics.fAscent);
951 }
952
descent(jlong paintHandle)953 static jfloat descent(jlong paintHandle) {
954 Paint::FontMetrics metrics;
955 getMetricsInternal(paintHandle, &metrics);
956 return SkScalarToFloat(metrics.fDescent);
957 }
958
getUnderlinePosition(jlong paintHandle)959 static jfloat getUnderlinePosition(jlong paintHandle) {
960 Paint::FontMetrics metrics;
961 getMetricsInternal(paintHandle, &metrics);
962 SkScalar position;
963 if (metrics.hasUnderlinePosition(&position)) {
964 return SkScalarToFloat(position);
965 } else {
966 const SkScalar textSize = reinterpret_cast<Paint*>(paintHandle)->getTextSize();
967 return SkScalarToFloat(Paint::kStdUnderline_Top * textSize);
968 }
969 }
970
getUnderlineThickness(jlong paintHandle)971 static jfloat getUnderlineThickness(jlong paintHandle) {
972 Paint::FontMetrics metrics;
973 getMetricsInternal(paintHandle, &metrics);
974 SkScalar thickness;
975 if (metrics.hasUnderlineThickness(&thickness)) {
976 return SkScalarToFloat(thickness);
977 } else {
978 const SkScalar textSize = reinterpret_cast<Paint*>(paintHandle)->getTextSize();
979 return SkScalarToFloat(Paint::kStdUnderline_Thickness * textSize);
980 }
981 }
982
getStrikeThruPosition(jlong paintHandle)983 static jfloat getStrikeThruPosition(jlong paintHandle) {
984 const SkScalar textSize = reinterpret_cast<Paint*>(paintHandle)->getTextSize();
985 return SkScalarToFloat(Paint::kStdStrikeThru_Top * textSize);
986 }
987
getStrikeThruThickness(jlong paintHandle)988 static jfloat getStrikeThruThickness(jlong paintHandle) {
989 const SkScalar textSize = reinterpret_cast<Paint*>(paintHandle)->getTextSize();
990 return SkScalarToFloat(Paint::kStdStrikeThru_Thickness * textSize);
991 }
992
setShadowLayer(jlong paintHandle,jfloat radius,jfloat dx,jfloat dy,jint color)993 static void setShadowLayer(jlong paintHandle, jfloat radius,
994 jfloat dx, jfloat dy, jint color) {
995 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
996 if (radius <= 0) {
997 paint->setLooper(nullptr);
998 }
999 else {
1000 SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius);
1001 paint->setLooper(SkBlurDrawLooper::Make((SkColor)color, sigma, dx, dy));
1002 }
1003 }
1004
hasShadowLayer(jlong paintHandle)1005 static jboolean hasShadowLayer(jlong paintHandle) {
1006 Paint* paint = reinterpret_cast<Paint*>(paintHandle);
1007 return paint->getLooper() && paint->getLooper()->asABlurShadow(nullptr);
1008 }
1009
equalsForTextMeasurement(jlong lPaint,jlong rPaint)1010 static jboolean equalsForTextMeasurement(jlong lPaint, jlong rPaint) {
1011 if (lPaint == rPaint) {
1012 return true;
1013 }
1014 Paint* leftPaint = reinterpret_cast<Paint*>(lPaint);
1015 Paint* rightPaint = reinterpret_cast<Paint*>(rPaint);
1016
1017 const Typeface* leftTypeface = Typeface::resolveDefault(leftPaint->getAndroidTypeface());
1018 const Typeface* rightTypeface = Typeface::resolveDefault(rightPaint->getAndroidTypeface());
1019 minikin::MinikinPaint leftMinikinPaint
1020 = MinikinUtils::prepareMinikinPaint(leftPaint, leftTypeface);
1021 minikin::MinikinPaint rightMinikinPaint
1022 = MinikinUtils::prepareMinikinPaint(rightPaint, rightTypeface);
1023
1024 return leftMinikinPaint == rightMinikinPaint;
1025 }
1026
1027 }; // namespace PaintGlue
1028
1029 static const JNINativeMethod methods[] = {
1030 {"nGetNativeFinalizer", "()J", (void*) PaintGlue::getNativeFinalizer},
1031 {"nInit","()J", (void*) PaintGlue::init},
1032 {"nInitWithPaint","(J)J", (void*) PaintGlue::initWithPaint},
1033 {"nBreakText","(J[CIIFI[F)I", (void*) PaintGlue::breakTextC},
1034 {"nBreakText","(JLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS},
1035 {"nGetTextAdvances","(J[CIIIII[FI)F",
1036 (void*) PaintGlue::getTextAdvances___CIIIII_FI},
1037 {"nGetTextAdvances","(JLjava/lang/String;IIIII[FI)F",
1038 (void*) PaintGlue::getTextAdvances__StringIIIII_FI},
1039
1040 {"nGetTextRunCursor", "(J[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C},
1041 {"nGetTextRunCursor", "(JLjava/lang/String;IIIII)I",
1042 (void*) PaintGlue::getTextRunCursor__String},
1043 {"nGetTextPath", "(JI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C},
1044 {"nGetTextPath", "(JILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String},
1045 {"nGetStringBounds", "(JLjava/lang/String;IIILandroid/graphics/Rect;)V",
1046 (void*) PaintGlue::getStringBounds },
1047 {"nGetCharArrayBounds", "(J[CIIILandroid/graphics/Rect;)V",
1048 (void*) PaintGlue::getCharArrayBounds },
1049 {"nHasGlyph", "(JILjava/lang/String;)Z", (void*) PaintGlue::hasGlyph },
1050 {"nGetRunAdvance", "(J[CIIIIZI)F", (void*) PaintGlue::getRunAdvance___CIIIIZI_F},
1051 {"nGetOffsetForAdvance", "(J[CIIIIZF)I",
1052 (void*) PaintGlue::getOffsetForAdvance___CIIIIZF_I},
1053
1054 // --------------- @FastNative ----------------------
1055
1056 {"nSetTextLocales","(JLjava/lang/String;)I", (void*) PaintGlue::setTextLocales},
1057 {"nSetFontFeatureSettings","(JLjava/lang/String;)V",
1058 (void*) PaintGlue::setFontFeatureSettings},
1059 {"nGetFontMetrics", "(JLandroid/graphics/Paint$FontMetrics;)F",
1060 (void*)PaintGlue::getFontMetrics},
1061 {"nGetFontMetricsInt", "(JLandroid/graphics/Paint$FontMetricsInt;)I",
1062 (void*)PaintGlue::getFontMetricsInt},
1063
1064 // --------------- @CriticalNative ------------------
1065
1066 {"nReset","(J)V", (void*) PaintGlue::reset},
1067 {"nSet","(JJ)V", (void*) PaintGlue::assign},
1068 {"nGetFlags","(J)I", (void*) PaintGlue::getFlags},
1069 {"nSetFlags","(JI)V", (void*) PaintGlue::setFlags},
1070 {"nGetHinting","(J)I", (void*) PaintGlue::getHinting},
1071 {"nSetHinting","(JI)V", (void*) PaintGlue::setHinting},
1072 {"nSetAntiAlias","(JZ)V", (void*) PaintGlue::setAntiAlias},
1073 {"nSetSubpixelText","(JZ)V", (void*) PaintGlue::setSubpixelText},
1074 {"nSetLinearText","(JZ)V", (void*) PaintGlue::setLinearText},
1075 {"nSetUnderlineText","(JZ)V", (void*) PaintGlue::setUnderlineText},
1076 {"nSetStrikeThruText","(JZ)V", (void*) PaintGlue::setStrikeThruText},
1077 {"nSetFakeBoldText","(JZ)V", (void*) PaintGlue::setFakeBoldText},
1078 {"nSetFilterBitmap","(JZ)V", (void*) PaintGlue::setFilterBitmap},
1079 {"nSetDither","(JZ)V", (void*) PaintGlue::setDither},
1080 {"nGetStyle","(J)I", (void*) PaintGlue::getStyle},
1081 {"nSetStyle","(JI)V", (void*) PaintGlue::setStyle},
1082 {"nGetColor","(J)I", (void*) PaintGlue::getColor},
1083 {"nSetColor","(JI)V", (void*) PaintGlue::setColor},
1084 {"nGetAlpha","(J)I", (void*) PaintGlue::getAlpha},
1085 {"nSetAlpha","(JI)V", (void*) PaintGlue::setAlpha},
1086 {"nGetStrokeWidth","(J)F", (void*) PaintGlue::getStrokeWidth},
1087 {"nSetStrokeWidth","(JF)V", (void*) PaintGlue::setStrokeWidth},
1088 {"nGetStrokeMiter","(J)F", (void*) PaintGlue::getStrokeMiter},
1089 {"nSetStrokeMiter","(JF)V", (void*) PaintGlue::setStrokeMiter},
1090 {"nGetStrokeCap","(J)I", (void*) PaintGlue::getStrokeCap},
1091 {"nSetStrokeCap","(JI)V", (void*) PaintGlue::setStrokeCap},
1092 {"nGetStrokeJoin","(J)I", (void*) PaintGlue::getStrokeJoin},
1093 {"nSetStrokeJoin","(JI)V", (void*) PaintGlue::setStrokeJoin},
1094 {"nGetFillPath","(JJJ)Z", (void*) PaintGlue::getFillPath},
1095 {"nSetShader","(JJ)J", (void*) PaintGlue::setShader},
1096 {"nSetColorFilter","(JJ)J", (void*) PaintGlue::setColorFilter},
1097 {"nSetXfermode","(JI)V", (void*) PaintGlue::setXfermode},
1098 {"nSetPathEffect","(JJ)J", (void*) PaintGlue::setPathEffect},
1099 {"nSetMaskFilter","(JJ)J", (void*) PaintGlue::setMaskFilter},
1100 {"nSetTypeface","(JJ)V", (void*) PaintGlue::setTypeface},
1101 {"nGetTextAlign","(J)I", (void*) PaintGlue::getTextAlign},
1102 {"nSetTextAlign","(JI)V", (void*) PaintGlue::setTextAlign},
1103 {"nSetTextLocalesByMinikinLocaleListId","(JI)V",
1104 (void*) PaintGlue::setTextLocalesByMinikinLocaleListId},
1105 {"nIsElegantTextHeight","(J)Z", (void*) PaintGlue::isElegantTextHeight},
1106 {"nSetElegantTextHeight","(JZ)V", (void*) PaintGlue::setElegantTextHeight},
1107 {"nGetTextSize","(J)F", (void*) PaintGlue::getTextSize},
1108 {"nSetTextSize","(JF)V", (void*) PaintGlue::setTextSize},
1109 {"nGetTextScaleX","(J)F", (void*) PaintGlue::getTextScaleX},
1110 {"nSetTextScaleX","(JF)V", (void*) PaintGlue::setTextScaleX},
1111 {"nGetTextSkewX","(J)F", (void*) PaintGlue::getTextSkewX},
1112 {"nSetTextSkewX","(JF)V", (void*) PaintGlue::setTextSkewX},
1113 {"nGetLetterSpacing","(J)F", (void*) PaintGlue::getLetterSpacing},
1114 {"nSetLetterSpacing","(JF)V", (void*) PaintGlue::setLetterSpacing},
1115 {"nGetWordSpacing","(J)F", (void*) PaintGlue::getWordSpacing},
1116 {"nSetWordSpacing","(JF)V", (void*) PaintGlue::setWordSpacing},
1117 {"nGetHyphenEdit", "(J)I", (void*) PaintGlue::getHyphenEdit},
1118 {"nSetHyphenEdit", "(JI)V", (void*) PaintGlue::setHyphenEdit},
1119 {"nAscent","(J)F", (void*) PaintGlue::ascent},
1120 {"nDescent","(J)F", (void*) PaintGlue::descent},
1121 {"nGetUnderlinePosition","(J)F", (void*) PaintGlue::getUnderlinePosition},
1122 {"nGetUnderlineThickness","(J)F", (void*) PaintGlue::getUnderlineThickness},
1123 {"nGetStrikeThruPosition","(J)F", (void*) PaintGlue::getStrikeThruPosition},
1124 {"nGetStrikeThruThickness","(J)F", (void*) PaintGlue::getStrikeThruThickness},
1125 {"nSetShadowLayer", "(JFFFI)V", (void*)PaintGlue::setShadowLayer},
1126 {"nHasShadowLayer", "(J)Z", (void*)PaintGlue::hasShadowLayer},
1127 {"nEqualsForTextMeasurement", "(JJ)Z", (void*)PaintGlue::equalsForTextMeasurement},
1128 };
1129
register_android_graphics_Paint(JNIEnv * env)1130 int register_android_graphics_Paint(JNIEnv* env) {
1131 gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics");
1132 gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class);
1133
1134 gFontMetrics_fieldID.top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F");
1135 gFontMetrics_fieldID.ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F");
1136 gFontMetrics_fieldID.descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F");
1137 gFontMetrics_fieldID.bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F");
1138 gFontMetrics_fieldID.leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F");
1139
1140 gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt");
1141 gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class);
1142
1143 gFontMetricsInt_fieldID.top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I");
1144 gFontMetricsInt_fieldID.ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I");
1145 gFontMetricsInt_fieldID.descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I");
1146 gFontMetricsInt_fieldID.bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I");
1147 gFontMetricsInt_fieldID.leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I");
1148
1149 return RegisterMethodsOrDie(env, "android/graphics/Paint", methods, NELEM(methods));
1150 }
1151
1152 }
1153