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