| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPath.h" |
| #include "include/core/SkPathEffect.h" |
| #include "include/core/SkPathUtils.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkStrokeRec.h" |
| #include "include/core/SkSurface.h" |
| #include "include/core/SkTypes.h" |
| #include "include/effects/SkDashPathEffect.h" |
| #include "src/core/SkPathEffectBase.h" |
| #include "tests/Test.h" |
| |
| #include <array> |
| |
| // crbug.com/348821 was rooted in SkDashPathEffect refusing to flatten and unflatten itself when |
| // the effect is nonsense. Here we test that it fails when passed nonsense parameters. |
| |
| DEF_TEST(DashPathEffectTest_crbug_348821, r) { |
| SkScalar intervals[] = { 1.76934361e+36f, 2.80259693e-45f }; // Values from bug. |
| const int count = 2; |
| SkScalar phase = SK_ScalarInfinity; // Used to force a nonsense effect. |
| sk_sp<SkPathEffect> dash(SkDashPathEffect::Make(intervals, count, phase)); |
| |
| REPORTER_ASSERT(r, dash == nullptr); |
| } |
| |
| // Test out the asPoint culling behavior. |
| DEF_TEST(DashPathEffectTest_asPoints, r) { |
| |
| const SkScalar intervals[] = { 1.0f, 1.0f }; |
| const int count = 2; |
| sk_sp<SkPathEffect> dash(SkDashPathEffect::Make(intervals, count, 0.0f)); |
| |
| SkRect cull = SkRect::MakeWH(1.0f, 1.0f); |
| |
| const struct { |
| SkPoint fPts[2]; |
| bool fExpectedResult; |
| } testCases[] = { |
| { { { -5.0f, 0.5f }, { -4.0f, 0.5f } }, false }, // off to the left |
| { { { 4.0f, 0.5f }, { 5.0f, 0.5f } }, false }, // off to the right |
| { { { 0.5f, 4.0f }, { 0.5f, 5.0f } }, false }, // off the bottom |
| { { { 0.5f, -5.0f }, { 0.5f, -4.0f } }, false }, // off the top |
| { { { 0.5f, 0.2f }, { 0.5f, 0.8f } }, true }, // entirely inside vertical |
| { { { 0.2f, 0.5f }, { 0.8f, 0.5f } }, true }, // entirely inside horizontal |
| { { { 0.5f, -5.0f }, { 0.5f, 5.0f } }, true }, // straddles both sides vertically |
| { { { -5.0f, 0.5f }, { 5.0f, 0.5f } }, true }, // straddles both sides horizontally |
| { { { 0.5f, -5.0f }, { 0.5f, 0.5f } }, true }, // straddles top |
| { { { 0.5f, 5.0f }, { 0.5f, 0.5f } }, true }, // straddles bottom |
| { { { -5.0f, 0.5f }, { 0.5f, 0.5f } }, true }, // straddles left |
| { { { 5.0f, 0.5f }, { 0.5f, 0.5f } }, true }, // straddles right |
| { { { 0.5f, 0.5f }, { 0.5f, 0.5f } }, false }, // zero length |
| }; |
| |
| SkPaint paint; |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setStrokeWidth(1.0f); |
| SkStrokeRec rec(paint); |
| |
| static const int kNumMats = 3; |
| SkMatrix mats[kNumMats]; |
| mats[0].reset(); |
| mats[1].setRotate(90, 0.5f, 0.5f); |
| mats[2].setTranslate(10.0f, 10.0f); |
| |
| for (int i = 0; i < kNumMats; ++i) { |
| for (int j = 0; j < (int)std::size(testCases); ++j) { |
| for (int k = 0; k < 2; ++k) { // exercise alternating endpoints |
| SkPathEffectBase::PointData results; |
| SkPath src; |
| |
| src.moveTo(testCases[j].fPts[k]); |
| src.lineTo(testCases[j].fPts[(k+1)%2]); |
| |
| bool actualResult = as_PEB(dash)->asPoints(&results, src, rec, mats[i], &cull); |
| if (i < 2) { |
| REPORTER_ASSERT(r, actualResult == testCases[j].fExpectedResult); |
| } else { |
| // On the third pass all the lines should be outside the translated cull rect |
| REPORTER_ASSERT(r, !actualResult); |
| } |
| } |
| } |
| } |
| } |
| |
| DEF_TEST(DashPath_bug4871, r) { |
| SkPath path; |
| path.moveTo(30, 24); |
| path.cubicTo(30.002f, 24, 30, 24, 30, 24); |
| path.close(); |
| |
| SkScalar intervals[2] = { 1, 1 }; |
| sk_sp<SkPathEffect> dash(SkDashPathEffect::Make(intervals, 2, 0)); |
| |
| SkPaint paint; |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setPathEffect(dash); |
| |
| SkPath fill; |
| skpathutils::FillPathWithPaint(path, paint, &fill); |
| } |
| |
| // Verify that long lines with many dashes don't cause overflows/OOMs. |
| DEF_TEST(DashPathEffectTest_asPoints_limit, r) { |
| sk_sp<SkSurface> surface(SkSurface::MakeRaster(SkImageInfo::MakeN32Premul(256, 256))); |
| SkCanvas* canvas = surface->getCanvas(); |
| |
| SkPaint p; |
| p.setStyle(SkPaint::kStroke_Style); |
| // force the bounds to outset by a large amount |
| p.setStrokeWidth(5.0e10f); |
| const SkScalar intervals[] = { 1, 1 }; |
| p.setPathEffect(SkDashPathEffect::Make(intervals, std::size(intervals), 0)); |
| canvas->drawLine(1, 1, 1, 5.0e10f, p); |
| } |
| |
| // This used to cause SkDashImpl to walk off the end of the intervals array, due to underflow |
| // trying to substract a smal value from a large one in floats. |
| DEF_TEST(DashCrazy_crbug_875494, r) { |
| SkScalar vals[] = { 98, 94, 2888458849.f, 227, 0, 197 }; |
| const int N = std::size(vals); |
| |
| SkRect cull = SkRect::MakeXYWH(43,236,57,149); |
| SkPath path; |
| path.addRect(cull); |
| |
| SkPath path2; |
| SkPaint paint; |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setPathEffect(SkDashPathEffect::Make(vals, N, 222)); |
| skpathutils::FillPathWithPaint(path, paint, &path2, &cull); |
| } |