dbfd7ab108
'static const' means, there must be at most one of these, and initialize it at compile time if possible or runtime if necessary. This leads to unexpected code execution, and TSAN* will complain about races on the guard variables. Generally 'constexpr' or 'const' are better choices. Neither can cause races: they're either intialized at compile time (constexpr) or intialized each time independently (const). This CL prefers constexpr where possible, and uses const where not. It even prefers constexpr over const where they don't make a difference... I want to have lots of examples of constexpr for people to see and mimic. The scoped-to-class static has nothing to do with any of this, and is not changed. * Not yet on the bots, which use an older TSAN. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2300623005 Review-Url: https://codereview.chromium.org/2300623005
133 lines
4.6 KiB
C++
133 lines
4.6 KiB
C++
/*
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* Copyright 2014 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 "gm.h"
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#include "SkCanvas.h"
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#include "SkPath.h"
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namespace skiagm {
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constexpr SkColor gPathColor = SK_ColorYELLOW;
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class ComplexClip3GM : public GM {
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public:
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ComplexClip3GM(bool doSimpleClipFirst)
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: fDoSimpleClipFirst(doSimpleClipFirst) {
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this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
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}
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protected:
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SkString onShortName() {
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SkString str;
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str.printf("complexclip3_%s", fDoSimpleClipFirst ? "simple" : "complex");
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return str;
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}
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SkISize onISize() { return SkISize::Make(1000, 950); }
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virtual void onDraw(SkCanvas* canvas) {
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SkPath clipSimple;
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clipSimple.addCircle(SkIntToScalar(70), SkIntToScalar(50), SkIntToScalar(20));
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SkRect r1 = { 10, 20, 70, 80 };
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SkPath clipComplex;
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clipComplex.moveTo(SkIntToScalar(40), SkIntToScalar(50));
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clipComplex.arcTo(r1, SkIntToScalar(30), SkIntToScalar(300), false);
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clipComplex.close();
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SkPath* firstClip = &clipSimple;
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SkPath* secondClip = &clipComplex;
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if (!fDoSimpleClipFirst) {
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SkTSwap<SkPath*>(firstClip, secondClip);
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}
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SkPaint paint;
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paint.setAntiAlias(true);
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sk_tool_utils::set_portable_typeface(&paint);
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paint.setTextSize(SkIntToScalar(20));
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constexpr struct {
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SkRegion::Op fOp;
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const char* fName;
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} gOps[] = {
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{SkRegion::kIntersect_Op, "I"},
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{SkRegion::kDifference_Op, "D" },
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{SkRegion::kUnion_Op, "U"},
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{SkRegion::kXOR_Op, "X" },
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{SkRegion::kReverseDifference_Op, "R"}
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};
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canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
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canvas->scale(3 * SK_Scalar1 / 4, 3 * SK_Scalar1 / 4);
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SkPaint pathPaint;
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pathPaint.setAntiAlias(true);
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pathPaint.setColor(gPathColor);
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for (int invA = 0; invA < 2; ++invA) {
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for (int aaBits = 0; aaBits < 4; ++aaBits) {
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canvas->save();
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for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); ++op) {
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for (int invB = 0; invB < 2; ++invB) {
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bool doAAA = SkToBool(aaBits & 1);
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bool doAAB = SkToBool(aaBits & 2);
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bool doInvA = SkToBool(invA);
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bool doInvB = SkToBool(invB);
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canvas->save();
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// set clip
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firstClip->setFillType(doInvA ? SkPath::kInverseEvenOdd_FillType :
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SkPath::kEvenOdd_FillType);
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secondClip->setFillType(doInvB ? SkPath::kInverseEvenOdd_FillType :
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SkPath::kEvenOdd_FillType);
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canvas->clipPath(*firstClip, SkRegion::kIntersect_Op, doAAA);
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canvas->clipPath(*secondClip, gOps[op].fOp, doAAB);
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// draw rect clipped
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SkRect r = { 0, 0, 100, 100 };
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canvas->drawRect(r, pathPaint);
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canvas->restore();
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SkScalar txtX = SkIntToScalar(10);
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paint.setColor(SK_ColorBLACK);
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SkString str;
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str.printf("%s%s %s %s%s", doAAA ? "A" : "B",
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doInvA ? "I" : "N",
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gOps[op].fName,
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doAAB ? "A" : "B",
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doInvB ? "I" : "N");
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canvas->drawText(str.c_str(), strlen(str.c_str()), txtX, SkIntToScalar(130),
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paint);
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if (doInvB) {
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canvas->translate(SkIntToScalar(150),0);
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} else {
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canvas->translate(SkIntToScalar(120),0);
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}
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}
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}
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canvas->restore();
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canvas->translate(0, SkIntToScalar(150));
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}
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}
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}
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private:
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bool fDoSimpleClipFirst;
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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// Simple clip first
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DEF_GM( return new ComplexClip3GM(true); )
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// Complex clip first
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DEF_GM( return new ComplexClip3GM(false); )
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}
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