diff options
author | Mike Reed <reed@google.com> | 2018-03-07 17:02:47 -0500 |
---|---|---|
committer | Skia Commit-Bot <skia-commit-bot@chromium.org> | 2018-03-07 22:32:20 +0000 |
commit | 4123223ccc85e4f712495403dd1a2869110fd8c4 (patch) | |
tree | ccb587567bd48f2a1b77885e92f8a0c44649fff2 /src/effects | |
parent | 23d23892cad305117fb8e46bcf8e15c3174c47f4 (diff) |
add TrimPathEffect
Bug: skia:
Change-Id: I453fb81ded4435b33567e9c8a6f3abe9535d687f
Reviewed-on: https://skia-review.googlesource.com/112820
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Diffstat (limited to 'src/effects')
-rw-r--r-- | src/effects/SkDashImpl.h | 2 | ||||
-rw-r--r-- | src/effects/SkTrimPE.h | 32 | ||||
-rw-r--r-- | src/effects/SkTrimPathEffect.cpp | 63 |
3 files changed, 96 insertions, 1 deletions
diff --git a/src/effects/SkDashImpl.h b/src/effects/SkDashImpl.h index cf74529934..c4e81478c7 100644 --- a/src/effects/SkDashImpl.h +++ b/src/effects/SkDashImpl.h @@ -10,7 +10,7 @@ #include "SkPathEffect.h" -class SK_API SkDashImpl : public SkPathEffect { +class SkDashImpl : public SkPathEffect { public: SkDashImpl(const SkScalar intervals[], int count, SkScalar phase); diff --git a/src/effects/SkTrimPE.h b/src/effects/SkTrimPE.h new file mode 100644 index 0000000000..2cd39c4793 --- /dev/null +++ b/src/effects/SkTrimPE.h @@ -0,0 +1,32 @@ +/* + * Copyright 2018 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef SkTrimImpl_DEFINED +#define SkTrimImpl_DEFINED + +#include "SkPathEffect.h" + +class SkTrimPE : public SkPathEffect { +public: + SkTrimPE(SkScalar startT, SkScalar stopT); + + bool filterPath(SkPath* dst, const SkPath& src, SkStrokeRec*, const SkRect*) const override; + + SK_TO_STRING_OVERRIDE() + SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTrimPE) + +protected: + void flatten(SkWriteBuffer&) const override; + +private: + const SkScalar fStartT; + const SkScalar fStopT; + + typedef SkPathEffect INHERITED; +}; + +#endif diff --git a/src/effects/SkTrimPathEffect.cpp b/src/effects/SkTrimPathEffect.cpp new file mode 100644 index 0000000000..beaa36e17d --- /dev/null +++ b/src/effects/SkTrimPathEffect.cpp @@ -0,0 +1,63 @@ +/* + * Copyright 2018 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "SkPathMeasure.h" +#include "SkTrimPathEffect.h" +#include "SkTrimPE.h" +#include "SkReadBuffer.h" +#include "SkWriteBuffer.h" + +SkTrimPE::SkTrimPE(SkScalar startT, SkScalar stopT) : fStartT(startT), fStopT(stopT) { + SkASSERT(startT >= 0 && startT <= 1); + SkASSERT(stopT >= 0 && stopT <= 1); + SkASSERT(startT != stopT); +} + +bool SkTrimPE::filterPath(SkPath* dst, const SkPath& src, SkStrokeRec* rec, + const SkRect* cullRect) const { + SkPathMeasure meas(src, false); + SkScalar length = meas.getLength(); + + if (fStartT < fStopT) { + meas.getSegment(fStartT * length, fStopT * length, dst, true); + } else { + meas.getSegment(0, fStopT * length, dst, true); + meas.getSegment(fStartT * length, length, dst, true); + } + return true; +} + +void SkTrimPE::flatten(SkWriteBuffer& buffer) const { + buffer.writeScalar(fStartT); + buffer.writeScalar(fStopT); +} + +sk_sp<SkFlattenable> SkTrimPE::CreateProc(SkReadBuffer& buffer) { + SkScalar start = buffer.readScalar(); + SkScalar stop = buffer.readScalar(); + return SkTrimPathEffect::Make(start, stop); +} + +#ifndef SK_IGNORE_TO_STRING +void SkTrimPE::toString(SkString* str) const { + str->appendf("SkTrimPathEffect: (%g %g)", fStartT, fStopT); +} +#endif + +////////////////////////////////////////////////////////////////////////////////////////////////// + +sk_sp<SkPathEffect> SkTrimPathEffect::Make(SkScalar startT, SkScalar stopT) { + if (!SkScalarsAreFinite(startT, stopT)) { + return nullptr; + } + startT = SkTPin(startT, 0.f, 1.f); + stopT = SkTPin(stopT, 0.f, 1.f); + if (startT == stopT) { + return nullptr; + } + return sk_sp<SkPathEffect>(new SkTrimPE(startT, stopT)); +} |