diff options
Diffstat (limited to 'chromium/third_party/skia/samplecode/SampleFuzz.cpp')
| -rw-r--r-- | chromium/third_party/skia/samplecode/SampleFuzz.cpp | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/chromium/third_party/skia/samplecode/SampleFuzz.cpp b/chromium/third_party/skia/samplecode/SampleFuzz.cpp new file mode 100644 index 00000000000..e690df1d926 --- /dev/null +++ b/chromium/third_party/skia/samplecode/SampleFuzz.cpp @@ -0,0 +1,396 @@ + +/* + * Copyright 2011 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ +#include "SampleCode.h" +#include "SkView.h" +#include "SkCanvas.h" +#include "SkBlurMaskFilter.h" +#include "SkPaint.h" +#include "SkPath.h" +#include "SkXfermode.h" +#include "SkMatrix.h" +#include "SkColor.h" +#include "SkRandom.h" + +static void set2x3(SkMatrix* m, float a, float b, float c, float d, float e, float f) { + m->reset(); + m->set(0, a); + m->set(1, b); + m->set(2, c); + m->set(3, d); + m->set(4, e); + m->set(5, f); +} + +static SkRandom gRand; +static bool return_large; +static bool return_undef; +static bool quick; +static bool scale_large; +static int scval = 1; +static float transval = 0; + +static int R(float x) { + return (int)floor(SkScalarToFloat(gRand.nextUScalar1()) * x); +} + +#if defined _WIN32 +#pragma warning ( push ) +// we are intentionally causing an overflow here +// (warning C4756: overflow in constant arithmetic) +#pragma warning ( disable : 4756 ) +#endif + +static float huge() { + double d = 1e100; + float f = (float)d; + return f; +} + +#if defined _WIN32 +#pragma warning ( pop ) +#endif + +static float make_number() { + float v = 0; + int sel; + + if (return_large == true && R(3) == 1) { + sel = R(6); + } else { + sel = R(4); + } + + if (return_undef == false && sel == 0) { + sel = 1; + } + + if (R(2) == 1) { + v = (float)R(100); + } else { + + switch (sel) { + case 0: break; + case 1: v = 0; break; + case 2: v = 0.000001f; break; + case 3: v = 10000; break; + case 4: v = 2000000000; break; + case 5: v = huge(); break; + } + + } + + if (R(4) == 1) { + v = -v; + } + + return v; +} + +static SkColor make_color() { + if (R(2) == 1) return 0xFFC0F0A0; else return 0xFF000090; +} + + +static SkColor make_fill() { +#if 0 + int sel; + + if (quick == true) sel = 0; else sel = R(6); + + switch (sel) { + + case 0: + case 1: + case 2: + return make_color(); + break; + + case 3: + var r = ctx.createLinearGradient(make_number(),make_number(),make_number(),make_number()); + for (i=0;i<4;i++) + r.addColorStop(make_number(),make_color()); + return r; + break; + + case 4: + var r = ctx.createRadialGradient(make_number(),make_number(),make_number(),make_number(),make_number(),make_number()); + for (i=0;i<4;i++) + r.addColorStop(make_number(),make_color()); + return r; + break; + + case 5: + var r = ctx.createPattern(imgObj,"repeat"); + if (R(6) == 0) + r.addColorStop(make_number(),make_color()); + return r; + break; + } +#else + return make_color(); +#endif +} + + +static void do_fuzz(SkCanvas* canvas) { + SkPath path; + SkPaint paint; + paint.setAntiAlias(true); + + for (int i=0;i<100;i++) { + switch (R(33)) { + + case 0: + paint.setColor(make_fill()); + break; + + case 1: + paint.setAlpha(gRand.nextU() & 0xFF); + break; + + case 2: { + SkXfermode::Mode mode; + switch (R(3)) { + case 0: mode = SkXfermode::kSrc_Mode; break; + case 1: mode = SkXfermode::kXor_Mode; break; + case 2: + default: // silence warning + mode = SkXfermode::kSrcOver_Mode; break; + } + paint.setXfermodeMode(mode); + } + break; + + case 3: + switch (R(2)) { + case 0: paint.setStrokeCap(SkPaint::kRound_Cap); break; + case 1: paint.setStrokeCap(SkPaint::kButt_Cap); break; + } + break; + + case 4: + switch (R(2)) { + case 0: paint.setStrokeJoin(SkPaint::kRound_Join); break; + case 1: paint.setStrokeJoin(SkPaint::kMiter_Join); break; + } + break; + + case 5: + paint.setStrokeWidth(make_number()); + break; + + case 6: + paint.setStrokeMiter(make_number()); + break; + + case 7: + if (quick == true) break; + SkSafeUnref(paint.setMaskFilter(SkBlurMaskFilter::Create(kNormal_SkBlurStyle, + make_number()))); + break; + + case 8: + if (quick == true) break; + //ctx.shadowColor = make_fill(); + break; + + case 9: + if (quick == true) break; + //ctx.shadowOffsetX = make_number(); + //ctx.shadowOffsetY = make_number(); + break; + + case 10: + canvas->restore(); + break; + + case 11: + canvas->rotate(make_number()); + break; + + case 12: + canvas->save(); + break; + + case 13: + canvas->scale(-1,-1); + break; + + case 14: + + if (quick == true) break; + + if (transval == 0) { + transval = make_number(); + canvas->translate(transval,0); + } else { + canvas->translate(-transval,0); + transval = 0; + } + + break; + + case 15: { + SkRect r; + r.set(make_number(),make_number(),make_number(),make_number()); + SkPaint::Style s = paint.getStyle(); + paint.setStyle(SkPaint::kFill_Style); + canvas->drawRect(r, paint); + paint.setStyle(s); + // clearrect + } break; + + case 16: + if (quick == true) break; +// ctx.drawImage(imgObj,make_number(),make_number(),make_number(),make_number(),make_number(),make_number(),make_number(),make_number()); + break; + + case 17: { + SkRect r; + r.set(make_number(),make_number(),make_number(),make_number()); + SkPaint::Style s = paint.getStyle(); + paint.setStyle(SkPaint::kFill_Style); + canvas->drawRect(r, paint); + paint.setStyle(s); + } break; + + case 18: + path.reset(); + break; + + case 19: + // ctx.clip() is evil. + break; + + case 20: + path.close(); + break; + + case 21: { + SkPaint::Style s = paint.getStyle(); + paint.setStyle(SkPaint::kFill_Style); + canvas->drawPath(path, paint); + paint.setStyle(s); + } break; + + case 22: { + SkPaint::Style s = paint.getStyle(); + paint.setStyle(SkPaint::kFill_Style); + canvas->drawPath(path, paint); + paint.setStyle(s); + } break; + + case 23: { + SkRect r; + r.set(make_number(),make_number(),make_number(),make_number()); + SkPaint::Style s = paint.getStyle(); + paint.setStyle(SkPaint::kStroke_Style); + canvas->drawRect(r, paint); + paint.setStyle(s); + } break; + + case 24: + if (quick == true) break; + //ctx.arc(make_number(),make_number(),make_number(),make_number(),make_number(),true); + break; + + case 25: + if (quick == true) break; + //ctx.arcTo(make_number(),make_number(),make_number(),make_number(),make_number()); + break; + + case 26: + if (quick == true) break; + //ctx.bezierCurveTo(make_number(),make_number(),make_number(),make_number(),make_number(),make_number()); + break; + + case 27: + path.lineTo(make_number(),make_number()); + break; + + case 28: + path.moveTo(make_number(),make_number()); + break; + + case 29: + if (quick == true) break; + path.quadTo(make_number(),make_number(),make_number(),make_number()); + break; + + case 30: { + if (quick == true) break; + SkMatrix matrix; + set2x3(&matrix, make_number(),make_number(),make_number(),make_number(),make_number(),make_number()); + canvas->concat(matrix); + } break; + + case 31: { + if (quick == true) break; + SkMatrix matrix; + set2x3(&matrix, make_number(),make_number(),make_number(),make_number(),make_number(),make_number()); + canvas->setMatrix(matrix); + } break; + + case 32: + + if (scale_large == true) { + + switch (scval) { + case 0: canvas->scale(-1000000000,1); + canvas->scale(-1000000000,1); + scval = 1; break; + case 1: canvas->scale(-.000000001f,1); scval = 2; break; + case 2: canvas->scale(-.000000001f,1); scval = 0; break; + } + + } + + break; + + + + } + } + +} + +////////////////////////////////////////////////////////////////////////////// + +class FuzzView : public SampleView { +public: + FuzzView() { + this->setBGColor(0xFFDDDDDD); + } + +protected: + // overrides from SkEventSink + virtual bool onQuery(SkEvent* evt) { + if (SampleCode::TitleQ(*evt)) { + SampleCode::TitleR(evt, "Fuzzer"); + return true; + } + return this->INHERITED::onQuery(evt); + } + + void drawBG(SkCanvas* canvas) { + canvas->drawColor(0xFFDDDDDD); + } + + virtual void onDrawContent(SkCanvas* canvas) { + do_fuzz(canvas); + this->inval(NULL); + } + +private: + typedef SkView INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +static SkView* MyFactory() { return new FuzzView; } +static SkViewRegister reg(MyFactory); |