1 /*
2  * Copyright 2016 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #include "SkJSONCanvas.h"
9 #include "SkColorFilter.h"
10 #include "SkImageFilter.h"
11 #include "SkMaskFilter.h"
12 #include "SkPaintDefaults.h"
13 #include "SkPath.h"
14 #include "SkPathEffect.h"
15 #include "SkRRect.h"
16 #include "SkTextBlob.h"
17 #include "SkTextBlobRunIterator.h"
18 #include "SkTypeface.h"
19 #include "SkWriteBuffer.h"
20 
SkJSONCanvas(int width,int height,SkWStream & out,bool sendBinaries)21 SkJSONCanvas::SkJSONCanvas(int width, int height, SkWStream& out, bool sendBinaries)
22     : INHERITED(width, height)
23     , fOut(out)
24     , fRoot(Json::objectValue)
25     , fCommands(Json::arrayValue)
26     , fSendBinaries(sendBinaries) {
27     fRoot[SKJSONCANVAS_VERSION] = Json::Value(1);
28 }
29 
finish()30 void SkJSONCanvas::finish() {
31     fRoot[SKJSONCANVAS_COMMANDS] = fCommands;
32     fOut.writeText(Json::FastWriter().write(fRoot).c_str());
33 }
34 
makePoint(const SkPoint & point)35 Json::Value SkJSONCanvas::makePoint(const SkPoint& point) {
36     Json::Value result(Json::arrayValue);
37     result.append(Json::Value(point.x()));
38     result.append(Json::Value(point.y()));
39     return result;
40 }
41 
makePoint(SkScalar x,SkScalar y)42 Json::Value SkJSONCanvas::makePoint(SkScalar x, SkScalar y) {
43     Json::Value result(Json::arrayValue);
44     result.append(Json::Value(x));
45     result.append(Json::Value(y));
46     return result;
47 }
48 
makeRect(const SkRect & rect)49 Json::Value SkJSONCanvas::makeRect(const SkRect& rect) {
50     Json::Value result(Json::arrayValue);
51     result.append(Json::Value(rect.left()));
52     result.append(Json::Value(rect.top()));
53     result.append(Json::Value(rect.right()));
54     result.append(Json::Value(rect.bottom()));
55     return result;
56 }
57 
makeRRect(const SkRRect & rrect)58 Json::Value SkJSONCanvas::makeRRect(const SkRRect& rrect) {
59     Json::Value result(Json::arrayValue);
60     result.append(this->makeRect(rrect.rect()));
61     result.append(this->makePoint(rrect.radii(SkRRect::kUpperLeft_Corner)));
62     result.append(this->makePoint(rrect.radii(SkRRect::kUpperRight_Corner)));
63     result.append(this->makePoint(rrect.radii(SkRRect::kLowerRight_Corner)));
64     result.append(this->makePoint(rrect.radii(SkRRect::kLowerLeft_Corner)));
65     return result;
66 }
67 
makePath(const SkPath & path)68 Json::Value SkJSONCanvas::makePath(const SkPath& path) {
69     Json::Value result(Json::objectValue);
70     switch (path.getFillType()) {
71         case SkPath::kWinding_FillType:
72             result[SKJSONCANVAS_ATTRIBUTE_FILLTYPE] = SKJSONCANVAS_FILLTYPE_WINDING;
73             break;
74         case SkPath::kEvenOdd_FillType:
75             result[SKJSONCANVAS_ATTRIBUTE_FILLTYPE] = SKJSONCANVAS_FILLTYPE_EVENODD;
76             break;
77         case SkPath::kInverseWinding_FillType:
78             result[SKJSONCANVAS_ATTRIBUTE_FILLTYPE] = SKJSONCANVAS_FILLTYPE_INVERSEWINDING;
79             break;
80         case SkPath::kInverseEvenOdd_FillType:
81             result[SKJSONCANVAS_ATTRIBUTE_FILLTYPE] = SKJSONCANVAS_FILLTYPE_INVERSEEVENODD;
82             break;
83     }
84     Json::Value verbs(Json::arrayValue);
85     SkPath::Iter iter(path, false);
86     SkPoint pts[4];
87     SkPath::Verb verb;
88     while ((verb = iter.next(pts)) != SkPath::kDone_Verb) {
89         switch (verb) {
90             case SkPath::kLine_Verb: {
91                 Json::Value line(Json::objectValue);
92                 line[SKJSONCANVAS_VERB_LINE] = this->makePoint(pts[1]);
93                 verbs.append(line);
94                 break;
95             }
96             case SkPath::kQuad_Verb: {
97                 Json::Value quad(Json::objectValue);
98                 Json::Value coords(Json::arrayValue);
99                 coords.append(this->makePoint(pts[1]));
100                 coords.append(this->makePoint(pts[2]));
101                 quad[SKJSONCANVAS_VERB_QUAD] = coords;
102                 verbs.append(quad);
103                 break;
104             }
105             case SkPath::kCubic_Verb: {
106                 Json::Value cubic(Json::objectValue);
107                 Json::Value coords(Json::arrayValue);
108                 coords.append(this->makePoint(pts[1]));
109                 coords.append(this->makePoint(pts[2]));
110                 coords.append(this->makePoint(pts[3]));
111                 cubic[SKJSONCANVAS_VERB_CUBIC] = coords;
112                 verbs.append(cubic);
113                 break;
114             }
115             case SkPath::kConic_Verb: {
116                 Json::Value conic(Json::objectValue);
117                 Json::Value coords(Json::arrayValue);
118                 coords.append(this->makePoint(pts[1]));
119                 coords.append(this->makePoint(pts[2]));
120                 coords.append(Json::Value(iter.conicWeight()));
121                 conic[SKJSONCANVAS_VERB_CONIC] = coords;
122                 verbs.append(conic);
123                 break;
124             }
125             case SkPath::kMove_Verb: {
126                 Json::Value move(Json::objectValue);
127                 move[SKJSONCANVAS_VERB_MOVE] = this->makePoint(pts[0]);
128                 verbs.append(move);
129                 break;
130             }
131             case SkPath::kClose_Verb:
132                 verbs.append(Json::Value(SKJSONCANVAS_VERB_CLOSE));
133                 break;
134             case SkPath::kDone_Verb:
135                 break;
136         }
137     }
138     result[SKJSONCANVAS_ATTRIBUTE_VERBS] = verbs;
139     return result;
140 }
141 
makeRegion(const SkRegion & region)142 Json::Value SkJSONCanvas::makeRegion(const SkRegion& region) {
143     return Json::Value("<unimplemented>");
144 }
145 
store_scalar(Json::Value * target,const char * key,SkScalar value,SkScalar defaultValue)146 static void store_scalar(Json::Value* target, const char* key, SkScalar value,
147                          SkScalar defaultValue) {
148     if (value != defaultValue) {
149         (*target)[key] = Json::Value(value);
150     }
151 }
152 
store_bool(Json::Value * target,const char * key,bool value,bool defaultValue)153 static void store_bool(Json::Value* target, const char* key, bool value, bool defaultValue) {
154     if (value != defaultValue) {
155         (*target)[key] = Json::Value(value);
156     }
157 }
158 
encode_data(const void * data,size_t count,Json::Value * target)159 static void encode_data(const void* data, size_t count, Json::Value* target) {
160     // just use a brain-dead JSON array for now, switch to base64 or something else smarter down the
161     // road
162     for (size_t i = 0; i < count; i++) {
163         target->append(((const uint8_t*)data)[i]);
164     }
165 }
166 
flatten(const SkFlattenable * flattenable,Json::Value * target,bool sendBinaries)167 static void flatten(const SkFlattenable* flattenable, Json::Value* target, bool sendBinaries) {
168     if (sendBinaries) {
169         SkWriteBuffer buffer;
170         flattenable->flatten(buffer);
171         void* data = sk_malloc_throw(buffer.bytesWritten());
172         buffer.writeToMemory(data);
173         Json::Value bytes;
174         encode_data(data, buffer.bytesWritten(), &bytes);
175         Json::Value jsonFlattenable;
176         jsonFlattenable[SKJSONCANVAS_ATTRIBUTE_NAME] = Json::Value(flattenable->getTypeName());
177         jsonFlattenable[SKJSONCANVAS_ATTRIBUTE_BYTES] = bytes;
178         (*target) = jsonFlattenable;
179         free(data);
180     }
181     else {
182         (*target)[SKJSONCANVAS_ATTRIBUTE_DESCRIPTION] = Json::Value(flattenable->getTypeName());
183     }
184 }
185 
flatten(const SkImage & image,Json::Value * target,bool sendBinaries)186 static bool SK_WARN_UNUSED_RESULT flatten(const SkImage& image, Json::Value* target,
187                                           bool sendBinaries) {
188     if (sendBinaries) {
189         SkData* encoded = image.encode(SkImageEncoder::kPNG_Type, 100);
190         if (encoded == nullptr) {
191             // PNG encode doesn't necessarily support all color formats, convert to a different
192             // format
193             size_t rowBytes = 4 * image.width();
194             void* buffer = sk_malloc_throw(rowBytes * image.height());
195             SkImageInfo dstInfo = SkImageInfo::Make(image.width(), image.height(),
196                                                     kN32_SkColorType, kPremul_SkAlphaType);
197             if (!image.readPixels(dstInfo, buffer, rowBytes, 0, 0)) {
198                 SkDebugf("readPixels failed\n");
199                 return false;
200             }
201             SkImage* converted = SkImage::NewRasterCopy(dstInfo, buffer, rowBytes);
202             encoded = converted->encode(SkImageEncoder::kPNG_Type, 100);
203             if (encoded == nullptr) {
204                 SkDebugf("image encode failed\n");
205                 return false;
206             }
207             free(converted);
208             free(buffer);
209         }
210         Json::Value bytes;
211         encode_data(encoded->data(), encoded->size(), &bytes);
212         (*target)[SKJSONCANVAS_ATTRIBUTE_BYTES] = bytes;
213         encoded->unref();
214     }
215     else {
216         SkString description = SkStringPrintf("%dx%d pixel image", image.width(), image.height());
217         (*target)[SKJSONCANVAS_ATTRIBUTE_DESCRIPTION] = Json::Value(description.c_str());
218     }
219     return true;
220 }
221 
color_type_name(SkColorType colorType)222 static const char* color_type_name(SkColorType colorType) {
223     switch (colorType) {
224         case kARGB_4444_SkColorType:
225             return SKJSONCANVAS_COLORTYPE_ARGB4444;
226         case kRGBA_8888_SkColorType:
227             return SKJSONCANVAS_COLORTYPE_RGBA8888;
228         case kBGRA_8888_SkColorType:
229             return SKJSONCANVAS_COLORTYPE_BGRA8888;
230         case kRGB_565_SkColorType:
231             return SKJSONCANVAS_COLORTYPE_565;
232         case kGray_8_SkColorType:
233             return SKJSONCANVAS_COLORTYPE_GRAY8;
234         case kIndex_8_SkColorType:
235             return SKJSONCANVAS_COLORTYPE_INDEX8;
236         case kAlpha_8_SkColorType:
237             return SKJSONCANVAS_COLORTYPE_ALPHA8;
238         default:
239             SkASSERT(false);
240             return SKJSONCANVAS_COLORTYPE_RGBA8888;
241     }
242 }
243 
alpha_type_name(SkAlphaType alphaType)244 static const char* alpha_type_name(SkAlphaType alphaType) {
245     switch (alphaType) {
246         case kOpaque_SkAlphaType:
247             return SKJSONCANVAS_ALPHATYPE_OPAQUE;
248         case kPremul_SkAlphaType:
249             return SKJSONCANVAS_ALPHATYPE_PREMUL;
250         case kUnpremul_SkAlphaType:
251             return SKJSONCANVAS_ALPHATYPE_UNPREMUL;
252         default:
253             SkASSERT(false);
254             return SKJSONCANVAS_ALPHATYPE_OPAQUE;
255     }
256 }
257 
flatten(const SkBitmap & bitmap,Json::Value * target,bool sendBinaries)258 static bool SK_WARN_UNUSED_RESULT flatten(const SkBitmap& bitmap, Json::Value* target,
259                                           bool sendBinaries) {
260     bitmap.lockPixels();
261     SkAutoTUnref<SkImage> image(SkImage::NewFromBitmap(bitmap));
262     bitmap.unlockPixels();
263     (*target)[SKJSONCANVAS_ATTRIBUTE_COLOR] = Json::Value(color_type_name(bitmap.colorType()));
264     (*target)[SKJSONCANVAS_ATTRIBUTE_ALPHA] = Json::Value(alpha_type_name(bitmap.alphaType()));
265     bool success = flatten(*image, target, sendBinaries);
266     return success;
267 }
268 
apply_paint_color(const SkPaint & paint,Json::Value * target)269 static void apply_paint_color(const SkPaint& paint, Json::Value* target) {
270     SkColor color = paint.getColor();
271     if (color != SK_ColorBLACK) {
272         Json::Value colorValue(Json::arrayValue);
273         colorValue.append(Json::Value(SkColorGetA(color)));
274         colorValue.append(Json::Value(SkColorGetR(color)));
275         colorValue.append(Json::Value(SkColorGetG(color)));
276         colorValue.append(Json::Value(SkColorGetB(color)));
277         (*target)[SKJSONCANVAS_ATTRIBUTE_COLOR] = colorValue;;
278     }
279 }
280 
apply_paint_style(const SkPaint & paint,Json::Value * target)281 static void apply_paint_style(const SkPaint& paint, Json::Value* target) {
282     SkPaint::Style style = paint.getStyle();
283     if (style != SkPaint::kFill_Style) {
284         switch (style) {
285             case SkPaint::kStroke_Style: {
286                 Json::Value stroke(SKJSONCANVAS_STYLE_STROKE);
287                 (*target)[SKJSONCANVAS_ATTRIBUTE_STYLE] = stroke;
288                 break;
289             }
290             case SkPaint::kStrokeAndFill_Style: {
291                 Json::Value strokeAndFill(SKJSONCANVAS_STYLE_STROKEANDFILL);
292                 (*target)[SKJSONCANVAS_ATTRIBUTE_STYLE] = strokeAndFill;
293                 break;
294             }
295             default: SkASSERT(false);
296         }
297     }
298 }
299 
apply_paint_cap(const SkPaint & paint,Json::Value * target)300 static void apply_paint_cap(const SkPaint& paint, Json::Value* target) {
301     SkPaint::Cap cap = paint.getStrokeCap();
302     if (cap != SkPaint::kDefault_Cap) {
303         switch (cap) {
304             case SkPaint::kButt_Cap: {
305                 (*target)[SKJSONCANVAS_ATTRIBUTE_CAP] = Json::Value(SKJSONCANVAS_CAP_BUTT);
306                 break;
307             }
308             case SkPaint::kRound_Cap: {
309                 (*target)[SKJSONCANVAS_ATTRIBUTE_CAP] = Json::Value(SKJSONCANVAS_CAP_ROUND);
310                 break;
311             }
312             case SkPaint::kSquare_Cap: {
313                 (*target)[SKJSONCANVAS_ATTRIBUTE_CAP] = Json::Value(SKJSONCANVAS_CAP_SQUARE);
314                 break;
315             }
316             default: SkASSERT(false);
317         }
318     }
319 }
apply_paint_maskfilter(const SkPaint & paint,Json::Value * target,bool sendBinaries)320 static void apply_paint_maskfilter(const SkPaint& paint, Json::Value* target, bool sendBinaries) {
321     SkMaskFilter* maskFilter = paint.getMaskFilter();
322     if (maskFilter != nullptr) {
323         SkMaskFilter::BlurRec blurRec;
324         if (maskFilter->asABlur(&blurRec)) {
325             Json::Value blur(Json::objectValue);
326             blur[SKJSONCANVAS_ATTRIBUTE_SIGMA] = Json::Value(blurRec.fSigma);
327             switch (blurRec.fStyle) {
328                 case SkBlurStyle::kNormal_SkBlurStyle:
329                     blur[SKJSONCANVAS_ATTRIBUTE_STYLE] = Json::Value(SKJSONCANVAS_BLURSTYLE_NORMAL);
330                     break;
331                 case SkBlurStyle::kSolid_SkBlurStyle:
332                     blur[SKJSONCANVAS_ATTRIBUTE_STYLE] = Json::Value(SKJSONCANVAS_BLURSTYLE_SOLID);
333                     break;
334                 case SkBlurStyle::kOuter_SkBlurStyle:
335                     blur[SKJSONCANVAS_ATTRIBUTE_STYLE] = Json::Value(SKJSONCANVAS_BLURSTYLE_OUTER);
336                     break;
337                 case SkBlurStyle::kInner_SkBlurStyle:
338                     blur[SKJSONCANVAS_ATTRIBUTE_STYLE] = Json::Value(SKJSONCANVAS_BLURSTYLE_INNER);
339                     break;
340                 default:
341                     SkASSERT(false);
342             }
343             switch (blurRec.fQuality) {
344                 case SkBlurQuality::kLow_SkBlurQuality:
345                     blur[SKJSONCANVAS_ATTRIBUTE_QUALITY] = Json::Value(SKJSONCANVAS_BLURQUALITY_LOW);
346                     break;
347                 case SkBlurQuality::kHigh_SkBlurQuality:
348                     blur[SKJSONCANVAS_ATTRIBUTE_QUALITY] = Json::Value(SKJSONCANVAS_BLURQUALITY_HIGH);
349                     break;
350                 default:
351                     SkASSERT(false);
352             }
353             (*target)[SKJSONCANVAS_ATTRIBUTE_BLUR] = blur;
354         }
355         else {
356             Json::Value jsonMaskFilter;
357             flatten(maskFilter, &jsonMaskFilter, sendBinaries);
358             (*target)[SKJSONCANVAS_ATTRIBUTE_MASKFILTER] = jsonMaskFilter;
359         }
360     }
361 }
362 
apply_paint_patheffect(const SkPaint & paint,Json::Value * target,bool sendBinaries)363 static void apply_paint_patheffect(const SkPaint& paint, Json::Value* target, bool sendBinaries) {
364     SkPathEffect* pathEffect = paint.getPathEffect();
365     if (pathEffect != nullptr) {
366         SkPathEffect::DashInfo dashInfo;
367         SkPathEffect::DashType dashType = pathEffect->asADash(&dashInfo);
368         if (dashType == SkPathEffect::kDash_DashType) {
369             dashInfo.fIntervals = (SkScalar*) sk_malloc_throw(dashInfo.fCount * sizeof(SkScalar));
370             pathEffect->asADash(&dashInfo);
371             Json::Value dashing(Json::objectValue);
372             Json::Value intervals(Json::arrayValue);
373             for (int32_t i = 0; i < dashInfo.fCount; i++) {
374                 intervals.append(Json::Value(dashInfo.fIntervals[i]));
375             }
376             free(dashInfo.fIntervals);
377             dashing[SKJSONCANVAS_ATTRIBUTE_INTERVALS] = intervals;
378             dashing[SKJSONCANVAS_ATTRIBUTE_PHASE] = dashInfo.fPhase;
379             (*target)[SKJSONCANVAS_ATTRIBUTE_DASHING] = dashing;
380         }
381         else {
382             Json::Value jsonPathEffect;
383             flatten(pathEffect, &jsonPathEffect, sendBinaries);
384             (*target)[SKJSONCANVAS_ATTRIBUTE_PATHEFFECT] = jsonPathEffect;
385         }
386     }
387 }
388 
apply_paint_textalign(const SkPaint & paint,Json::Value * target)389 static void apply_paint_textalign(const SkPaint& paint, Json::Value* target) {
390     SkPaint::Align textAlign = paint.getTextAlign();
391     if (textAlign != SkPaint::kLeft_Align) {
392         switch (textAlign) {
393             case SkPaint::kCenter_Align: {
394                 (*target)[SKJSONCANVAS_ATTRIBUTE_TEXTALIGN] = SKJSONCANVAS_ALIGN_CENTER;
395                 break;
396             }
397             case SkPaint::kRight_Align: {
398                 (*target)[SKJSONCANVAS_ATTRIBUTE_TEXTALIGN] = SKJSONCANVAS_ALIGN_RIGHT;
399                 break;
400             }
401             default: SkASSERT(false);
402         }
403     }
404 }
405 
apply_paint_typeface(const SkPaint & paint,Json::Value * target,bool sendBinaries)406 static void apply_paint_typeface(const SkPaint& paint, Json::Value* target,
407                                  bool sendBinaries) {
408     SkTypeface* typeface = paint.getTypeface();
409     if (typeface != nullptr) {
410         if (sendBinaries) {
411             Json::Value jsonTypeface;
412             SkDynamicMemoryWStream buffer;
413             typeface->serialize(&buffer);
414             void* data = sk_malloc_throw(buffer.bytesWritten());
415             buffer.copyTo(data);
416             Json::Value bytes;
417             encode_data(data, buffer.bytesWritten(), &bytes);
418             jsonTypeface[SKJSONCANVAS_ATTRIBUTE_BYTES] = bytes;
419             free(data);
420             (*target)[SKJSONCANVAS_ATTRIBUTE_TYPEFACE] = jsonTypeface;
421         }
422     }
423 }
424 
apply_paint_shader(const SkPaint & paint,Json::Value * target,bool sendBinaries)425 static void apply_paint_shader(const SkPaint& paint, Json::Value* target, bool sendBinaries) {
426     SkFlattenable* shader = paint.getShader();
427     if (shader != nullptr) {
428         Json::Value jsonShader;
429         flatten(shader, &jsonShader, sendBinaries);
430         (*target)[SKJSONCANVAS_ATTRIBUTE_SHADER] = jsonShader;
431     }
432 }
433 
apply_paint_xfermode(const SkPaint & paint,Json::Value * target,bool sendBinaries)434 static void apply_paint_xfermode(const SkPaint& paint, Json::Value* target, bool sendBinaries) {
435     SkFlattenable* xfermode = paint.getXfermode();
436     if (xfermode != nullptr) {
437         Json::Value jsonXfermode;
438         flatten(xfermode, &jsonXfermode, sendBinaries);
439         (*target)[SKJSONCANVAS_ATTRIBUTE_XFERMODE] = jsonXfermode;
440     }
441 }
442 
apply_paint_imagefilter(const SkPaint & paint,Json::Value * target,bool sendBinaries)443 static void apply_paint_imagefilter(const SkPaint& paint, Json::Value* target, bool sendBinaries) {
444     SkFlattenable* imageFilter = paint.getImageFilter();
445     if (imageFilter != nullptr) {
446         Json::Value jsonImageFilter;
447         flatten(imageFilter, &jsonImageFilter, sendBinaries);
448         (*target)[SKJSONCANVAS_ATTRIBUTE_IMAGEFILTER] = jsonImageFilter;
449     }
450 }
451 
apply_paint_colorfilter(const SkPaint & paint,Json::Value * target,bool sendBinaries)452 static void apply_paint_colorfilter(const SkPaint& paint, Json::Value* target, bool sendBinaries) {
453     SkFlattenable* colorFilter = paint.getColorFilter();
454     if (colorFilter != nullptr) {
455         Json::Value jsonColorFilter;
456         flatten(colorFilter, &jsonColorFilter, sendBinaries);
457         (*target)[SKJSONCANVAS_ATTRIBUTE_COLORFILTER] = jsonColorFilter;
458     }
459 }
460 
makePaint(const SkPaint & paint)461 Json::Value SkJSONCanvas::makePaint(const SkPaint& paint) {
462     Json::Value result(Json::objectValue);
463     store_scalar(&result, SKJSONCANVAS_ATTRIBUTE_STROKEWIDTH, paint.getStrokeWidth(), 0.0f);
464     store_scalar(&result, SKJSONCANVAS_ATTRIBUTE_STROKEMITER, paint.getStrokeMiter(),
465                  SkPaintDefaults_MiterLimit);
466     store_bool(&result, SKJSONCANVAS_ATTRIBUTE_ANTIALIAS, paint.isAntiAlias(), false);
467     store_scalar(&result, SKJSONCANVAS_ATTRIBUTE_TEXTSIZE, paint.getTextSize(),
468                  SkPaintDefaults_TextSize);
469     store_scalar(&result, SKJSONCANVAS_ATTRIBUTE_TEXTSCALEX, paint.getTextScaleX(), SK_Scalar1);
470     store_scalar(&result, SKJSONCANVAS_ATTRIBUTE_TEXTSCALEX, paint.getTextSkewX(), 0.0f);
471     apply_paint_color(paint, &result);
472     apply_paint_style(paint, &result);
473     apply_paint_cap(paint, &result);
474     apply_paint_textalign(paint, &result);
475     apply_paint_patheffect(paint, &result, fSendBinaries);
476     apply_paint_maskfilter(paint, &result, fSendBinaries);
477     apply_paint_shader(paint, &result, fSendBinaries);
478     apply_paint_xfermode(paint, &result, fSendBinaries);
479     apply_paint_imagefilter(paint, &result, fSendBinaries);
480     apply_paint_colorfilter(paint, &result, fSendBinaries);
481     apply_paint_typeface(paint, &result, fSendBinaries);
482     return result;
483 }
484 
MakeIRect(const SkIRect & rect)485 Json::Value SkJSONCanvas::MakeIRect(const SkIRect& rect) {
486     Json::Value result(Json::arrayValue);
487     result.append(Json::Value(rect.left()));
488     result.append(Json::Value(rect.top()));
489     result.append(Json::Value(rect.right()));
490     result.append(Json::Value(rect.bottom()));
491     return result;
492 }
493 
MakeMatrix(const SkMatrix & matrix)494 Json::Value SkJSONCanvas::MakeMatrix(const SkMatrix& matrix) {
495     Json::Value result(Json::arrayValue);
496     Json::Value row1(Json::arrayValue);
497     row1.append(Json::Value(matrix[0]));
498     row1.append(Json::Value(matrix[1]));
499     row1.append(Json::Value(matrix[2]));
500     result.append(row1);
501     Json::Value row2(Json::arrayValue);
502     row2.append(Json::Value(matrix[3]));
503     row2.append(Json::Value(matrix[4]));
504     row2.append(Json::Value(matrix[5]));
505     result.append(row2);
506     Json::Value row3(Json::arrayValue);
507     row3.append(Json::Value(matrix[6]));
508     row3.append(Json::Value(matrix[7]));
509     row3.append(Json::Value(matrix[8]));
510     result.append(row3);
511     return result;
512 }
513 
makeRegionOp(SkRegion::Op op)514 Json::Value SkJSONCanvas::makeRegionOp(SkRegion::Op op) {
515     switch (op) {
516         case SkRegion::kDifference_Op:
517             return Json::Value(SKJSONCANVAS_REGIONOP_DIFFERENCE);
518         case SkRegion::kIntersect_Op:
519             return Json::Value(SKJSONCANVAS_REGIONOP_INTERSECT);
520         case SkRegion::kUnion_Op:
521             return Json::Value(SKJSONCANVAS_REGIONOP_UNION);
522         case SkRegion::kXOR_Op:
523             return Json::Value(SKJSONCANVAS_REGIONOP_XOR);
524         case SkRegion::kReverseDifference_Op:
525             return Json::Value(SKJSONCANVAS_REGIONOP_REVERSE_DIFFERENCE);
526         case SkRegion::kReplace_Op:
527             return Json::Value(SKJSONCANVAS_REGIONOP_REPLACE);
528         default:
529             SkASSERT(false);
530             return Json::Value("<invalid region op>");
531     };
532 }
533 
makePointMode(SkCanvas::PointMode mode)534 Json::Value SkJSONCanvas::makePointMode(SkCanvas::PointMode mode) {
535     switch (mode) {
536         case SkCanvas::kPoints_PointMode:
537             return Json::Value(SKJSONCANVAS_POINTMODE_POINTS);
538         case SkCanvas::kLines_PointMode:
539             return Json::Value(SKJSONCANVAS_POINTMODE_LINES);
540         case SkCanvas::kPolygon_PointMode:
541             return Json::Value(SKJSONCANVAS_POINTMODE_POLYGON);
542         default:
543             SkASSERT(false);
544             return Json::Value("<invalid point mode>");
545     };
546 }
547 
didConcat(const SkMatrix & matrix)548 void SkJSONCanvas::didConcat(const SkMatrix& matrix) {
549     Json::Value command(Json::objectValue);
550     switch (matrix.getType()) {
551         case SkMatrix::kTranslate_Mask:
552             command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_TRANSLATE);
553             command[SKJSONCANVAS_ATTRIBUTE_X] = Json::Value(matrix.get(SkMatrix::kMTransX));
554             command[SKJSONCANVAS_ATTRIBUTE_Y] = Json::Value(matrix.get(SkMatrix::kMTransY));
555             break;
556         case SkMatrix::kScale_Mask:
557             command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_SCALE);
558             command[SKJSONCANVAS_ATTRIBUTE_X] = Json::Value(matrix.get(SkMatrix::kMScaleX));
559             command[SKJSONCANVAS_ATTRIBUTE_Y] = Json::Value(matrix.get(SkMatrix::kMScaleY));
560             break;
561         default:
562             this->didSetMatrix(this->getTotalMatrix());
563             return;
564     }
565     fCommands.append(command);
566 }
567 
didSetMatrix(const SkMatrix & matrix)568 void SkJSONCanvas::didSetMatrix(const SkMatrix& matrix) {
569     Json::Value command(Json::objectValue);
570     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_MATRIX);
571     command[SKJSONCANVAS_ATTRIBUTE_MATRIX] = this->MakeMatrix(matrix);
572     fCommands.append(command);
573 }
574 
onDrawPaint(const SkPaint & paint)575 void SkJSONCanvas::onDrawPaint(const SkPaint& paint) {
576     Json::Value command(Json::objectValue);
577     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_PAINT);
578     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
579     fCommands.append(command);
580 }
581 
onDrawRect(const SkRect & rect,const SkPaint & paint)582 void SkJSONCanvas::onDrawRect(const SkRect& rect, const SkPaint& paint) {
583     Json::Value command(Json::objectValue);
584     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_RECT);
585     command[SKJSONCANVAS_ATTRIBUTE_COORDS] = this->makeRect(rect);
586     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
587     fCommands.append(command);
588 }
589 
onDrawOval(const SkRect & rect,const SkPaint & paint)590 void SkJSONCanvas::onDrawOval(const SkRect& rect, const SkPaint& paint) {
591     Json::Value command(Json::objectValue);
592     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_OVAL);
593     command[SKJSONCANVAS_ATTRIBUTE_COORDS] = this->makeRect(rect);
594     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
595     fCommands.append(command);
596 }
597 
onDrawRRect(const SkRRect & rrect,const SkPaint & paint)598 void SkJSONCanvas::onDrawRRect(const SkRRect& rrect, const SkPaint& paint) {
599     Json::Value command(Json::objectValue);
600     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_RRECT);
601     command[SKJSONCANVAS_ATTRIBUTE_COORDS] = this->makeRRect(rrect);
602     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
603     fCommands.append(command);
604 }
605 
onDrawDRRect(const SkRRect & outer,const SkRRect & inner,const SkPaint & paint)606 void SkJSONCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner, const SkPaint& paint) {
607     Json::Value command(Json::objectValue);
608     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_RRECT);
609     command[SKJSONCANVAS_ATTRIBUTE_INNER] = this->makeRRect(inner);
610     command[SKJSONCANVAS_ATTRIBUTE_OUTER] = this->makeRRect(outer);
611     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
612     fCommands.append(command);
613 }
614 
onDrawPoints(SkCanvas::PointMode mode,size_t count,const SkPoint pts[],const SkPaint & paint)615 void SkJSONCanvas::onDrawPoints(SkCanvas::PointMode mode, size_t count, const SkPoint pts[],
616                                 const SkPaint& paint) {
617     Json::Value command(Json::objectValue);
618     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_POINTS);
619     command[SKJSONCANVAS_ATTRIBUTE_MODE] = this->makePointMode(mode);
620     Json::Value points(Json::arrayValue);
621     for (size_t i = 0; i < count; i++) {
622         points.append(this->makePoint(pts[i]));
623     }
624     command[SKJSONCANVAS_ATTRIBUTE_POINTS] = points;
625     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
626     fCommands.append(command);
627 }
628 
onDrawVertices(SkCanvas::VertexMode,int vertexCount,const SkPoint vertices[],const SkPoint texs[],const SkColor colors[],SkXfermode *,const uint16_t indices[],int indexCount,const SkPaint &)629 void SkJSONCanvas::onDrawVertices(SkCanvas::VertexMode, int vertexCount, const SkPoint vertices[],
630                                   const SkPoint texs[], const SkColor colors[], SkXfermode*,
631                                   const uint16_t indices[], int indexCount, const SkPaint&) {
632     SkDebugf("unsupported: drawVertices\n");
633     Json::Value command(Json::objectValue);
634     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_VERTICES);
635     fCommands.append(command);
636 }
637 
onDrawAtlas(const SkImage *,const SkRSXform[],const SkRect[],const SkColor[],int count,SkXfermode::Mode,const SkRect * cull,const SkPaint *)638 void SkJSONCanvas::onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[],
639                                int count, SkXfermode::Mode, const SkRect* cull, const SkPaint*) {
640     SkDebugf("unsupported: drawAtlas\n");
641     Json::Value command(Json::objectValue);
642     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_ATLAS);
643     fCommands.append(command);
644 }
645 
onDrawPath(const SkPath & path,const SkPaint & paint)646 void SkJSONCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) {
647     Json::Value command(Json::objectValue);
648     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_PATH);
649     command[SKJSONCANVAS_ATTRIBUTE_PATH] = this->makePath(path);
650     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
651     fCommands.append(command);
652 }
653 
onDrawImage(const SkImage * image,SkScalar dx,SkScalar dy,const SkPaint * paint)654 void SkJSONCanvas::onDrawImage(const SkImage* image, SkScalar dx, SkScalar dy,
655                                const SkPaint* paint) {
656     Json::Value encoded;
657     if (flatten(*image, &encoded, fSendBinaries)) {
658         Json::Value command(Json::objectValue);
659         command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_IMAGE);
660         command[SKJSONCANVAS_ATTRIBUTE_IMAGE] = encoded;
661         command[SKJSONCANVAS_ATTRIBUTE_COORDS] = this->makePoint(dx, dy);
662         if (paint != nullptr) {
663             command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(*paint);
664         }
665         fCommands.append(command);
666     }
667 }
668 
onDrawImageRect(const SkImage * image,const SkRect * src,const SkRect & dst,const SkPaint * paint,SkCanvas::SrcRectConstraint constraint)669 void SkJSONCanvas::onDrawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst,
670                                    const SkPaint* paint, SkCanvas::SrcRectConstraint constraint) {
671     Json::Value encoded;
672     if (flatten(*image, &encoded, fSendBinaries)) {
673         Json::Value command(Json::objectValue);
674         command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_IMAGERECT);
675         command[SKJSONCANVAS_ATTRIBUTE_IMAGE] = encoded;
676         if (src != nullptr) {
677             command[SKJSONCANVAS_ATTRIBUTE_SRC] = this->makeRect(*src);
678         }
679         command[SKJSONCANVAS_ATTRIBUTE_DST] = this->makeRect(dst);
680         if (paint != nullptr) {
681             command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(*paint);
682         }
683         if (constraint == SkCanvas::kStrict_SrcRectConstraint) {
684             command[SKJSONCANVAS_ATTRIBUTE_STRICT] = Json::Value(true);
685         }
686         fCommands.append(command);
687     }
688 }
689 
onDrawImageNine(const SkImage *,const SkIRect & center,const SkRect & dst,const SkPaint *)690 void SkJSONCanvas::onDrawImageNine(const SkImage*, const SkIRect& center, const SkRect& dst,
691                                    const SkPaint*) {
692     SkDebugf("unsupported: drawImageNine\n");
693     Json::Value command(Json::objectValue);
694     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_IMAGENINE);
695     fCommands.append(command);
696 }
697 
onDrawBitmap(const SkBitmap & bitmap,SkScalar dx,SkScalar dy,const SkPaint * paint)698 void SkJSONCanvas::onDrawBitmap(const SkBitmap& bitmap, SkScalar dx, SkScalar dy,
699                                 const SkPaint* paint) {
700     Json::Value encoded;
701     if (flatten(bitmap, &encoded, fSendBinaries)) {
702         Json::Value command(Json::objectValue);
703         command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_BITMAP);
704         command[SKJSONCANVAS_ATTRIBUTE_BITMAP] = encoded;
705         command[SKJSONCANVAS_ATTRIBUTE_COORDS] = this->makePoint(dx, dy);
706         if (paint != nullptr) {
707             command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(*paint);
708         }
709         fCommands.append(command);
710     }
711 }
712 
onDrawBitmapRect(const SkBitmap & bitmap,const SkRect * src,const SkRect & dst,const SkPaint * paint,SkCanvas::SrcRectConstraint constraint)713 void SkJSONCanvas::onDrawBitmapRect(const SkBitmap& bitmap, const SkRect* src, const SkRect& dst,
714                                    const SkPaint* paint, SkCanvas::SrcRectConstraint constraint) {
715     Json::Value encoded;
716     if (flatten(bitmap, &encoded, fSendBinaries)) {
717         Json::Value command(Json::objectValue);
718         command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_BITMAPRECT);
719         command[SKJSONCANVAS_ATTRIBUTE_BITMAP] = encoded;
720         if (src != nullptr) {
721             command[SKJSONCANVAS_ATTRIBUTE_SRC] = this->makeRect(*src);
722         }
723         command[SKJSONCANVAS_ATTRIBUTE_DST] = this->makeRect(dst);
724         if (paint != nullptr) {
725             command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(*paint);
726         }
727         if (constraint == SkCanvas::kStrict_SrcRectConstraint) {
728             command[SKJSONCANVAS_ATTRIBUTE_STRICT] = Json::Value(true);
729         }
730         fCommands.append(command);
731     }
732 }
733 
onDrawBitmapNine(const SkBitmap &,const SkIRect & center,const SkRect & dst,const SkPaint *)734 void SkJSONCanvas::onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
735                                     const SkPaint*) {
736     SkDebugf("unsupported: drawBitmapNine\n");
737     Json::Value command(Json::objectValue);
738     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_BITMAPNINE);
739     fCommands.append(command);
740 }
741 
onDrawText(const void * text,size_t byteLength,SkScalar x,SkScalar y,const SkPaint & paint)742 void SkJSONCanvas::onDrawText(const void* text, size_t byteLength, SkScalar x,
743                               SkScalar y, const SkPaint& paint) {
744     Json::Value command(Json::objectValue);
745     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_TEXT);
746     command[SKJSONCANVAS_ATTRIBUTE_TEXT] = Json::Value((const char*) text,
747                                                        ((const char*) text) + byteLength);
748     command[SKJSONCANVAS_ATTRIBUTE_COORDS] = this->makePoint(x, y);
749     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
750     fCommands.append(command);
751 }
752 
onDrawPosText(const void * text,size_t byteLength,const SkPoint pos[],const SkPaint & paint)753 void SkJSONCanvas::onDrawPosText(const void* text, size_t byteLength,
754                                  const SkPoint pos[], const SkPaint& paint) {
755     Json::Value command(Json::objectValue);
756     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_POSTEXT);
757     command[SKJSONCANVAS_ATTRIBUTE_TEXT] = Json::Value((const char*) text,
758                                                        ((const char*) text) + byteLength);
759     Json::Value coords(Json::arrayValue);
760     for (size_t i = 0; i < byteLength; i++) {
761         coords.append(this->makePoint(pos[i]));
762     }
763     command[SKJSONCANVAS_ATTRIBUTE_COORDS] = coords;
764     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
765     fCommands.append(command);
766 }
767 
onDrawPosTextH(const void * text,size_t byteLength,const SkScalar xpos[],SkScalar constY,const SkPaint & paint)768 void SkJSONCanvas::onDrawPosTextH(const void* text, size_t byteLength,
769                                   const SkScalar xpos[], SkScalar constY,
770                                   const SkPaint& paint) {
771     SkDebugf("unsupported: drawPosTextH\n");
772     Json::Value command(Json::objectValue);
773     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_POSTEXTH);
774     fCommands.append(command);
775 }
776 
onDrawTextOnPath(const void * text,size_t byteLength,const SkPath & path,const SkMatrix * matrix,const SkPaint & paint)777 void SkJSONCanvas::onDrawTextOnPath(const void* text, size_t byteLength,
778                                     const SkPath& path, const SkMatrix* matrix,
779                                     const SkPaint& paint) {
780     Json::Value command(Json::objectValue);
781     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_TEXTONPATH);
782     command[SKJSONCANVAS_ATTRIBUTE_TEXT] = Json::Value((const char*) text,
783                                                        ((const char*) text) + byteLength);
784     command[SKJSONCANVAS_ATTRIBUTE_PATH] = this->makePath(path);
785     if (matrix != nullptr) {
786         command[SKJSONCANVAS_ATTRIBUTE_MATRIX] = this->MakeMatrix(*matrix);
787     }
788     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
789     fCommands.append(command);
790 }
791 
onDrawTextBlob(const SkTextBlob * blob,SkScalar x,SkScalar y,const SkPaint & paint)792 void SkJSONCanvas::onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y,
793                                   const SkPaint& paint) {
794     Json::Value command(Json::objectValue);
795     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_TEXTBLOB);
796     Json::Value runs(Json::arrayValue);
797     SkTextBlobRunIterator iter(blob);
798     while (!iter.done()) {
799         Json::Value run(Json::objectValue);
800         Json::Value jsonPositions(Json::arrayValue);
801         Json::Value jsonGlyphs(Json::arrayValue);
802         const SkScalar* iterPositions = iter.pos();
803         const uint16_t* iterGlyphs = iter.glyphs();
804         for (uint32_t i = 0; i < iter.glyphCount(); i++) {
805             switch (iter.positioning()) {
806                 case SkTextBlob::kFull_Positioning:
807                     jsonPositions.append(this->makePoint(iterPositions[i * 2],
808                                                          iterPositions[i * 2 + 1]));
809                     break;
810                 case SkTextBlob::kHorizontal_Positioning:
811                     jsonPositions.append(Json::Value(iterPositions[i]));
812                     break;
813                 case SkTextBlob::kDefault_Positioning:
814                     break;
815             }
816             jsonGlyphs.append(Json::Value(iterGlyphs[i]));
817         }
818         if (iter.positioning() != SkTextBlob::kDefault_Positioning) {
819             run[SKJSONCANVAS_ATTRIBUTE_POSITIONS] = jsonPositions;
820         }
821         run[SKJSONCANVAS_ATTRIBUTE_GLYPHS] = jsonGlyphs;
822         SkPaint fontPaint;
823         iter.applyFontToPaint(&fontPaint);
824         run[SKJSONCANVAS_ATTRIBUTE_FONT] = this->makePaint(fontPaint);
825         run[SKJSONCANVAS_ATTRIBUTE_COORDS] = this->makePoint(iter.offset());
826         runs.append(run);
827         iter.next();
828     }
829     command[SKJSONCANVAS_ATTRIBUTE_RUNS] = runs;
830     command[SKJSONCANVAS_ATTRIBUTE_X] = Json::Value(x);
831     command[SKJSONCANVAS_ATTRIBUTE_Y] = Json::Value(y);
832     command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(paint);
833     fCommands.append(command);
834 }
835 
onDrawPatch(const SkPoint cubics[12],const SkColor colors[4],const SkPoint texCoords[4],SkXfermode * xmode,const SkPaint & paint)836 void SkJSONCanvas::onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
837                                const SkPoint texCoords[4], SkXfermode* xmode,
838                                const SkPaint& paint) {
839     SkDebugf("unsupported: drawPatch\n");
840     Json::Value command(Json::objectValue);
841     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_PATCH);
842     fCommands.append(command);
843 }
844 
onDrawDrawable(SkDrawable *,const SkMatrix *)845 void SkJSONCanvas::onDrawDrawable(SkDrawable*, const SkMatrix*) {
846     SkDebugf("unsupported: drawDrawable\n");
847     Json::Value command(Json::objectValue);
848     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_DRAWABLE);
849     fCommands.append(command);
850 }
851 
onClipRect(const SkRect & rect,SkRegion::Op op,ClipEdgeStyle edgeStyle)852 void SkJSONCanvas::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
853     Json::Value command(Json::objectValue);
854     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_CLIPRECT);
855     command[SKJSONCANVAS_ATTRIBUTE_COORDS] = this->makeRect(rect);
856     command[SKJSONCANVAS_ATTRIBUTE_REGIONOP] = this->makeRegionOp(op);
857     command[SKJSONCANVAS_ATTRIBUTE_ANTIALIAS] = (edgeStyle == SkCanvas::kSoft_ClipEdgeStyle);
858     fCommands.append(command);
859 }
860 
onClipRRect(const SkRRect & rrect,SkRegion::Op op,ClipEdgeStyle edgeStyle)861 void SkJSONCanvas::onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
862     Json::Value command(Json::objectValue);
863     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_CLIPRRECT);
864     command[SKJSONCANVAS_ATTRIBUTE_COORDS] = this->makeRRect(rrect);
865     command[SKJSONCANVAS_ATTRIBUTE_REGIONOP] = this->makeRegionOp(op);
866     command[SKJSONCANVAS_ATTRIBUTE_ANTIALIAS] = (edgeStyle == SkCanvas::kSoft_ClipEdgeStyle);
867     fCommands.append(command);
868 }
869 
onClipPath(const SkPath & path,SkRegion::Op op,ClipEdgeStyle edgeStyle)870 void SkJSONCanvas::onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
871     Json::Value command(Json::objectValue);
872     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_CLIPPATH);
873     command[SKJSONCANVAS_ATTRIBUTE_PATH] = this->makePath(path);
874     command[SKJSONCANVAS_ATTRIBUTE_REGIONOP] = this->makeRegionOp(op);
875     command[SKJSONCANVAS_ATTRIBUTE_ANTIALIAS] = (edgeStyle == SkCanvas::kSoft_ClipEdgeStyle);
876     fCommands.append(command);
877 }
878 
onClipRegion(const SkRegion & deviceRgn,SkRegion::Op op)879 void SkJSONCanvas::onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) {
880     Json::Value command(Json::objectValue);
881     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_CLIPREGION);
882     command[SKJSONCANVAS_ATTRIBUTE_REGION] = this->makeRegion(deviceRgn);
883     command[SKJSONCANVAS_ATTRIBUTE_REGIONOP] = this->makeRegionOp(op);
884     fCommands.append(command);
885 }
886 
willSave()887 void SkJSONCanvas::willSave() {
888     Json::Value command(Json::objectValue);
889     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_SAVE);
890     fCommands.append(command);
891 }
892 
willRestore()893 void SkJSONCanvas::willRestore() {
894     Json::Value command(Json::objectValue);
895     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_RESTORE);
896     fCommands.append(command);
897 }
898 
getSaveLayerStrategy(const SaveLayerRec & rec)899 SkCanvas::SaveLayerStrategy SkJSONCanvas::getSaveLayerStrategy(const SaveLayerRec& rec) {
900     Json::Value command(Json::objectValue);
901     command[SKJSONCANVAS_COMMAND] = Json::Value(SKJSONCANVAS_COMMAND_SAVELAYER);
902     if (rec.fBounds != nullptr) {
903         command[SKJSONCANVAS_ATTRIBUTE_BOUNDS] = this->makeRect(*rec.fBounds);
904     }
905     if (rec.fPaint != nullptr) {
906         command[SKJSONCANVAS_ATTRIBUTE_PAINT] = this->makePaint(*rec.fPaint);
907     }
908     if (rec.fBackdrop != nullptr) {
909         Json::Value backdrop;
910         flatten(rec.fBackdrop, &backdrop, fSendBinaries);
911         command[SKJSONCANVAS_ATTRIBUTE_BACKDROP] = backdrop;
912     }
913     if (rec.fSaveLayerFlags != 0) {
914         SkDebugf("unsupported: saveLayer flags\n");
915     }
916     fCommands.append(command);
917     return this->INHERITED::getSaveLayerStrategy(rec);
918 }
919