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comparison: gfx/skia/trunk/src/utils/SkDumpCanvas.cpp

gfx/skia/trunk/src/utils/SkDumpCanvas.cpp

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1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9 #include "SkDumpCanvas.h"
10
11 #ifdef SK_DEVELOPER
12 #include "SkPicture.h"
13 #include "SkPixelRef.h"
14 #include "SkRRect.h"
15 #include "SkString.h"
16 #include <stdarg.h>
17 #include <stdio.h>
18
19 // needed just to know that these are all subclassed from SkFlattenable
20 #include "SkShader.h"
21 #include "SkPathEffect.h"
22 #include "SkXfermode.h"
23 #include "SkColorFilter.h"
24 #include "SkPathEffect.h"
25 #include "SkMaskFilter.h"
26
27 static void toString(const SkRect& r, SkString* str) {
28 str->appendf("[%g,%g %g:%g]",
29 SkScalarToFloat(r.fLeft), SkScalarToFloat(r.fTop),
30 SkScalarToFloat(r.width()), SkScalarToFloat(r.height()));
31 }
32
33 static void toString(const SkIRect& r, SkString* str) {
34 str->appendf("[%d,%d %d:%d]", r.fLeft, r.fTop, r.width(), r.height());
35 }
36
37 static void toString(const SkRRect& rrect, SkString* str) {
38 SkRect r = rrect.getBounds();
39 str->appendf("[%g,%g %g:%g]",
40 SkScalarToFloat(r.fLeft), SkScalarToFloat(r.fTop),
41 SkScalarToFloat(r.width()), SkScalarToFloat(r.height()));
42 if (rrect.isOval()) {
43 str->append("()");
44 } else if (rrect.isSimple()) {
45 const SkVector& rad = rrect.getSimpleRadii();
46 str->appendf("(%g,%g)", rad.x(), rad.y());
47 } else if (rrect.isComplex()) {
48 SkVector radii[4] = {
49 rrect.radii(SkRRect::kUpperLeft_Corner),
50 rrect.radii(SkRRect::kUpperRight_Corner),
51 rrect.radii(SkRRect::kLowerRight_Corner),
52 rrect.radii(SkRRect::kLowerLeft_Corner),
53 };
54 str->appendf("(%g,%g %g,%g %g,%g %g,%g)",
55 radii[0].x(), radii[0].y(),
56 radii[1].x(), radii[1].y(),
57 radii[2].x(), radii[2].y(),
58 radii[3].x(), radii[3].y());
59 }
60 }
61
62 static void dumpVerbs(const SkPath& path, SkString* str) {
63 SkPath::Iter iter(path, false);
64 SkPoint pts[4];
65 for (;;) {
66 switch (iter.next(pts, false)) {
67 case SkPath::kMove_Verb:
68 str->appendf(" M%g,%g", pts[0].fX, pts[0].fY);
69 break;
70 case SkPath::kLine_Verb:
71 str->appendf(" L%g,%g", pts[0].fX, pts[0].fY);
72 break;
73 case SkPath::kQuad_Verb:
74 str->appendf(" Q%g,%g,%g,%g", pts[1].fX, pts[1].fY,
75 pts[2].fX, pts[2].fY);
76 break;
77 case SkPath::kCubic_Verb:
78 str->appendf(" C%g,%g,%g,%g,%g,%g", pts[1].fX, pts[1].fY,
79 pts[2].fX, pts[2].fY, pts[3].fX, pts[3].fY);
80 break;
81 case SkPath::kClose_Verb:
82 str->append("X");
83 break;
84 case SkPath::kDone_Verb:
85 return;
86 case SkPath::kConic_Verb:
87 SkASSERT(0);
88 break;
89 }
90 }
91 }
92
93 static void toString(const SkPath& path, SkString* str) {
94 if (path.isEmpty()) {
95 str->append("path:empty");
96 } else {
97 toString(path.getBounds(), str);
98 #if 1
99 SkString s;
100 dumpVerbs(path, &s);
101 str->append(s.c_str());
102 #endif
103 str->append("]");
104 str->prepend("path:[");
105 }
106 }
107
108 static const char* toString(SkRegion::Op op) {
109 static const char* gOpNames[] = {
110 "DIFF", "SECT", "UNION", "XOR", "RDIFF", "REPLACE"
111 };
112 return gOpNames[op];
113 }
114
115 static void toString(const SkRegion& rgn, SkString* str) {
116 str->append("Region:[");
117 toString(rgn.getBounds(), str);
118 str->append("]");
119 if (rgn.isComplex()) {
120 str->append(".complex");
121 }
122 }
123
124 static const char* toString(SkCanvas::VertexMode vm) {
125 static const char* gVMNames[] = {
126 "TRIANGLES", "STRIP", "FAN"
127 };
128 return gVMNames[vm];
129 }
130
131 static const char* toString(SkCanvas::PointMode pm) {
132 static const char* gPMNames[] = {
133 "POINTS", "LINES", "POLYGON"
134 };
135 return gPMNames[pm];
136 }
137
138 static void toString(const void* text, size_t byteLen, SkPaint::TextEncoding enc,
139 SkString* str) {
140 // FIXME: this code appears to be untested - and probably unused - and probably wrong
141 switch (enc) {
142 case SkPaint::kUTF8_TextEncoding:
143 str->appendf("\"%.*s\"%s", (int)SkTMax<size_t>(byteLen, 32), (const char*) text,
144 byteLen > 32 ? "..." : "");
145 break;
146 case SkPaint::kUTF16_TextEncoding:
147 str->appendf("\"%.*ls\"%s", (int)SkTMax<size_t>(byteLen, 32), (const wchar_t*) text,
148 byteLen > 64 ? "..." : "");
149 break;
150 case SkPaint::kUTF32_TextEncoding:
151 str->appendf("\"%.*ls\"%s", (int)SkTMax<size_t>(byteLen, 32), (const wchar_t*) text,
152 byteLen > 128 ? "..." : "");
153 break;
154 case SkPaint::kGlyphID_TextEncoding:
155 str->append("<glyphs>");
156 break;
157
158 default:
159 SkASSERT(false);
160 break;
161 }
162 }
163
164 ///////////////////////////////////////////////////////////////////////////////
165
166 #define WIDE_OPEN 16384
167
168 SkDumpCanvas::SkDumpCanvas(Dumper* dumper) : INHERITED(WIDE_OPEN, WIDE_OPEN) {
169 fNestLevel = 0;
170 SkSafeRef(dumper);
171 fDumper = dumper;
172 }
173
174 SkDumpCanvas::~SkDumpCanvas() {
175 SkSafeUnref(fDumper);
176 }
177
178 void SkDumpCanvas::dump(Verb verb, const SkPaint* paint,
179 const char format[], ...) {
180 static const size_t BUFFER_SIZE = 1024;
181
182 char buffer[BUFFER_SIZE];
183 va_list args;
184 va_start(args, format);
185 vsnprintf(buffer, BUFFER_SIZE, format, args);
186 va_end(args);
187
188 if (fDumper) {
189 fDumper->dump(this, verb, buffer, paint);
190 }
191 }
192
193 ///////////////////////////////////////////////////////////////////////////////
194
195 void SkDumpCanvas::willSave(SaveFlags flags) {
196 this->dump(kSave_Verb, NULL, "save(0x%X)", flags);
197 this->INHERITED::willSave(flags);
198 }
199
200 SkCanvas::SaveLayerStrategy SkDumpCanvas::willSaveLayer(const SkRect* bounds, const SkPaint* paint,
201 SaveFlags flags) {
202 SkString str;
203 str.printf("saveLayer(0x%X)", flags);
204 if (bounds) {
205 str.append(" bounds");
206 toString(*bounds, &str);
207 }
208 if (paint) {
209 if (paint->getAlpha() != 0xFF) {
210 str.appendf(" alpha:0x%02X", paint->getAlpha());
211 }
212 if (paint->getXfermode()) {
213 str.appendf(" xfermode:%p", paint->getXfermode());
214 }
215 }
216 this->dump(kSave_Verb, paint, str.c_str());
217 return this->INHERITED::willSaveLayer(bounds, paint, flags);
218 }
219
220 void SkDumpCanvas::willRestore() {
221 this->dump(kRestore_Verb, NULL, "restore");
222 this->INHERITED::willRestore();
223 }
224
225 void SkDumpCanvas::didTranslate(SkScalar dx, SkScalar dy) {
226 this->dump(kMatrix_Verb, NULL, "translate(%g %g)",
227 SkScalarToFloat(dx), SkScalarToFloat(dy));
228 this->INHERITED::didTranslate(dx, dy);
229 }
230
231 void SkDumpCanvas::didScale(SkScalar sx, SkScalar sy) {
232 this->dump(kMatrix_Verb, NULL, "scale(%g %g)",
233 SkScalarToFloat(sx), SkScalarToFloat(sy));
234 this->INHERITED::didScale(sx, sy);
235 }
236
237 void SkDumpCanvas::didRotate(SkScalar degrees) {
238 this->dump(kMatrix_Verb, NULL, "rotate(%g)", SkScalarToFloat(degrees));
239 this->INHERITED::didRotate(degrees);
240 }
241
242 void SkDumpCanvas::didSkew(SkScalar sx, SkScalar sy) {
243 this->dump(kMatrix_Verb, NULL, "skew(%g %g)",
244 SkScalarToFloat(sx), SkScalarToFloat(sy));
245 this->INHERITED::didSkew(sx, sy);
246 }
247
248 void SkDumpCanvas::didConcat(const SkMatrix& matrix) {
249 SkString str;
250 matrix.toString(&str);
251 this->dump(kMatrix_Verb, NULL, "concat(%s)", str.c_str());
252 this->INHERITED::didConcat(matrix);
253 }
254
255 void SkDumpCanvas::didSetMatrix(const SkMatrix& matrix) {
256 SkString str;
257 matrix.toString(&str);
258 this->dump(kMatrix_Verb, NULL, "setMatrix(%s)", str.c_str());
259 this->INHERITED::didSetMatrix(matrix);
260 }
261
262 ///////////////////////////////////////////////////////////////////////////////
263
264 const char* SkDumpCanvas::EdgeStyleToAAString(ClipEdgeStyle edgeStyle) {
265 return kSoft_ClipEdgeStyle == edgeStyle ? "AA" : "BW";
266 }
267
268 void SkDumpCanvas::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
269 SkString str;
270 toString(rect, &str);
271 this->dump(kClip_Verb, NULL, "clipRect(%s %s %s)", str.c_str(), toString(op),
272 EdgeStyleToAAString(edgeStyle));
273 this->INHERITED::onClipRect(rect, op, edgeStyle);
274 }
275
276 void SkDumpCanvas::onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
277 SkString str;
278 toString(rrect, &str);
279 this->dump(kClip_Verb, NULL, "clipRRect(%s %s %s)", str.c_str(), toString(op),
280 EdgeStyleToAAString(edgeStyle));
281 this->INHERITED::onClipRRect(rrect, op, edgeStyle);
282 }
283
284 void SkDumpCanvas::onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
285 SkString str;
286 toString(path, &str);
287 this->dump(kClip_Verb, NULL, "clipPath(%s %s %s)", str.c_str(), toString(op),
288 EdgeStyleToAAString(edgeStyle));
289 this->INHERITED::onClipPath(path, op, edgeStyle);
290 }
291
292 void SkDumpCanvas::onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) {
293 SkString str;
294 toString(deviceRgn, &str);
295 this->dump(kClip_Verb, NULL, "clipRegion(%s %s)", str.c_str(),
296 toString(op));
297 this->INHERITED::onClipRegion(deviceRgn, op);
298 }
299
300 void SkDumpCanvas::onPushCull(const SkRect& cullRect) {
301 SkString str;
302 toString(cullRect, &str);
303 this->dump(kCull_Verb, NULL, "pushCull(%s)", str.c_str());
304 }
305
306 void SkDumpCanvas::onPopCull() {
307 this->dump(kCull_Verb, NULL, "popCull()");
308 }
309 ///////////////////////////////////////////////////////////////////////////////
310
311 void SkDumpCanvas::drawPaint(const SkPaint& paint) {
312 this->dump(kDrawPaint_Verb, &paint, "drawPaint()");
313 }
314
315 void SkDumpCanvas::drawPoints(PointMode mode, size_t count,
316 const SkPoint pts[], const SkPaint& paint) {
317 this->dump(kDrawPoints_Verb, &paint, "drawPoints(%s, %d)", toString(mode),
318 count);
319 }
320
321 void SkDumpCanvas::drawOval(const SkRect& rect, const SkPaint& paint) {
322 SkString str;
323 toString(rect, &str);
324 this->dump(kDrawOval_Verb, &paint, "drawOval(%s)", str.c_str());
325 }
326
327 void SkDumpCanvas::drawRect(const SkRect& rect, const SkPaint& paint) {
328 SkString str;
329 toString(rect, &str);
330 this->dump(kDrawRect_Verb, &paint, "drawRect(%s)", str.c_str());
331 }
332
333 void SkDumpCanvas::drawRRect(const SkRRect& rrect, const SkPaint& paint) {
334 SkString str;
335 toString(rrect, &str);
336 this->dump(kDrawDRRect_Verb, &paint, "drawRRect(%s)", str.c_str());
337 }
338
339 void SkDumpCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner,
340 const SkPaint& paint) {
341 SkString str0, str1;
342 toString(outer, &str0);
343 toString(inner, &str0);
344 this->dump(kDrawRRect_Verb, &paint, "drawDRRect(%s,%s)",
345 str0.c_str(), str1.c_str());
346 }
347
348 void SkDumpCanvas::drawPath(const SkPath& path, const SkPaint& paint) {
349 SkString str;
350 toString(path, &str);
351 this->dump(kDrawPath_Verb, &paint, "drawPath(%s)", str.c_str());
352 }
353
354 void SkDumpCanvas::drawBitmap(const SkBitmap& bitmap, SkScalar x, SkScalar y,
355 const SkPaint* paint) {
356 SkString str;
357 bitmap.toString(&str);
358 this->dump(kDrawBitmap_Verb, paint, "drawBitmap(%s %g %g)", str.c_str(),
359 SkScalarToFloat(x), SkScalarToFloat(y));
360 }
361
362 void SkDumpCanvas::drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
363 const SkRect& dst, const SkPaint* paint,
364 DrawBitmapRectFlags flags) {
365 SkString bs, rs;
366 bitmap.toString(&bs);
367 toString(dst, &rs);
368 // show the src-rect only if its not everything
369 if (src && (src->fLeft > 0 || src->fTop > 0 ||
370 src->fRight < SkIntToScalar(bitmap.width()) ||
371 src->fBottom < SkIntToScalar(bitmap.height()))) {
372 SkString ss;
373 toString(*src, &ss);
374 rs.prependf("%s ", ss.c_str());
375 }
376
377 this->dump(kDrawBitmap_Verb, paint, "drawBitmapRectToRect(%s %s)",
378 bs.c_str(), rs.c_str());
379 }
380
381 void SkDumpCanvas::drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
382 const SkPaint* paint) {
383 SkString bs, ms;
384 bitmap.toString(&bs);
385 m.toString(&ms);
386 this->dump(kDrawBitmap_Verb, paint, "drawBitmapMatrix(%s %s)",
387 bs.c_str(), ms.c_str());
388 }
389
390 void SkDumpCanvas::drawSprite(const SkBitmap& bitmap, int x, int y,
391 const SkPaint* paint) {
392 SkString str;
393 bitmap.toString(&str);
394 this->dump(kDrawBitmap_Verb, paint, "drawSprite(%s %d %d)", str.c_str(),
395 x, y);
396 }
397
398 void SkDumpCanvas::drawText(const void* text, size_t byteLength, SkScalar x,
399 SkScalar y, const SkPaint& paint) {
400 SkString str;
401 toString(text, byteLength, paint.getTextEncoding(), &str);
402 this->dump(kDrawText_Verb, &paint, "drawText(%s [%d] %g %g)", str.c_str(),
403 byteLength, SkScalarToFloat(x), SkScalarToFloat(y));
404 }
405
406 void SkDumpCanvas::drawPosText(const void* text, size_t byteLength,
407 const SkPoint pos[], const SkPaint& paint) {
408 SkString str;
409 toString(text, byteLength, paint.getTextEncoding(), &str);
410 this->dump(kDrawText_Verb, &paint, "drawPosText(%s [%d] %g %g ...)",
411 str.c_str(), byteLength, SkScalarToFloat(pos[0].fX),
412 SkScalarToFloat(pos[0].fY));
413 }
414
415 void SkDumpCanvas::drawPosTextH(const void* text, size_t byteLength,
416 const SkScalar xpos[], SkScalar constY,
417 const SkPaint& paint) {
418 SkString str;
419 toString(text, byteLength, paint.getTextEncoding(), &str);
420 this->dump(kDrawText_Verb, &paint, "drawPosTextH(%s [%d] %g %g ...)",
421 str.c_str(), byteLength, SkScalarToFloat(xpos[0]),
422 SkScalarToFloat(constY));
423 }
424
425 void SkDumpCanvas::drawTextOnPath(const void* text, size_t byteLength,
426 const SkPath& path, const SkMatrix* matrix,
427 const SkPaint& paint) {
428 SkString str;
429 toString(text, byteLength, paint.getTextEncoding(), &str);
430 this->dump(kDrawText_Verb, &paint, "drawTextOnPath(%s [%d])",
431 str.c_str(), byteLength);
432 }
433
434 void SkDumpCanvas::drawPicture(SkPicture& picture) {
435 this->dump(kDrawPicture_Verb, NULL, "drawPicture(%p) %d:%d", &picture,
436 picture.width(), picture.height());
437 fNestLevel += 1;
438 this->INHERITED::drawPicture(picture);
439 fNestLevel -= 1;
440 this->dump(kDrawPicture_Verb, NULL, "endPicture(%p) %d:%d", &picture,
441 picture.width(), picture.height());
442 }
443
444 void SkDumpCanvas::drawVertices(VertexMode vmode, int vertexCount,
445 const SkPoint vertices[], const SkPoint texs[],
446 const SkColor colors[], SkXfermode* xmode,
447 const uint16_t indices[], int indexCount,
448 const SkPaint& paint) {
449 this->dump(kDrawVertices_Verb, &paint, "drawVertices(%s [%d] %g %g ...)",
450 toString(vmode), vertexCount, SkScalarToFloat(vertices[0].fX),
451 SkScalarToFloat(vertices[0].fY));
452 }
453
454 void SkDumpCanvas::drawData(const void* data, size_t length) {
455 // this->dump(kDrawData_Verb, NULL, "drawData(%d)", length);
456 this->dump(kDrawData_Verb, NULL, "drawData(%d) %.*s", length,
457 SkTMin<size_t>(length, 64), data);
458 }
459
460 void SkDumpCanvas::beginCommentGroup(const char* description) {
461 this->dump(kBeginCommentGroup_Verb, NULL, "beginCommentGroup(%s)", description);
462 }
463
464 void SkDumpCanvas::addComment(const char* kywd, const char* value) {
465 this->dump(kAddComment_Verb, NULL, "addComment(%s, %s)", kywd, value);
466 }
467
468 void SkDumpCanvas::endCommentGroup() {
469 this->dump(kEndCommentGroup_Verb, NULL, "endCommentGroup()");
470 }
471
472 ///////////////////////////////////////////////////////////////////////////////
473 ///////////////////////////////////////////////////////////////////////////////
474
475 SkFormatDumper::SkFormatDumper(void (*proc)(const char*, void*), void* refcon) {
476 fProc = proc;
477 fRefcon = refcon;
478 }
479
480 static void appendPtr(SkString* str, const void* ptr, const char name[]) {
481 if (ptr) {
482 str->appendf(" %s:%p", name, ptr);
483 }
484 }
485
486 static void appendFlattenable(SkString* str, const SkFlattenable* ptr,
487 const char name[]) {
488 if (ptr) {
489 str->appendf(" %s:%p", name, ptr);
490 }
491 }
492
493 void SkFormatDumper::dump(SkDumpCanvas* canvas, SkDumpCanvas::Verb verb,
494 const char str[], const SkPaint* p) {
495 SkString msg, tab;
496 const int level = canvas->getNestLevel() + canvas->getSaveCount() - 1;
497 SkASSERT(level >= 0);
498 for (int i = 0; i < level; i++) {
499 #if 0
500 tab.append("\t");
501 #else
502 tab.append(" "); // tabs are often too wide to be useful
503 #endif
504 }
505 msg.printf("%s%s", tab.c_str(), str);
506
507 if (p) {
508 msg.appendf(" color:0x%08X flags:%X", p->getColor(), p->getFlags());
509 appendFlattenable(&msg, p->getShader(), "shader");
510 appendFlattenable(&msg, p->getXfermode(), "xfermode");
511 appendFlattenable(&msg, p->getPathEffect(), "pathEffect");
512 appendFlattenable(&msg, p->getMaskFilter(), "maskFilter");
513 appendFlattenable(&msg, p->getPathEffect(), "pathEffect");
514 appendFlattenable(&msg, p->getColorFilter(), "filter");
515
516 if (SkDumpCanvas::kDrawText_Verb == verb) {
517 msg.appendf(" textSize:%g", SkScalarToFloat(p->getTextSize()));
518 appendPtr(&msg, p->getTypeface(), "typeface");
519 }
520
521 if (p->getStyle() != SkPaint::kFill_Style) {
522 msg.appendf(" strokeWidth:%g", SkScalarToFloat(p->getStrokeWidth()));
523 }
524 }
525
526 fProc(msg.c_str(), fRefcon);
527 }
528
529 ///////////////////////////////////////////////////////////////////////////////
530
531 static void dumpToDebugf(const char text[], void*) {
532 SkDebugf("%s\n", text);
533 }
534
535 SkDebugfDumper::SkDebugfDumper() : INHERITED(dumpToDebugf, NULL) {}
536
537 #endif

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