141 lines
4.7 KiB
C++
141 lines
4.7 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/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkClipOp.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPathBuilder.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTypeface.h"
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#include "include/core/SkTypes.h"
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#include "tools/ToolUtils.h"
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#include <utility>
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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(0xFFDDDDDD);
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}
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protected:
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SkString onShortName() override {
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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() override { return SkISize::Make(400, 950); }
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void onDraw(SkCanvas* canvas) override {
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SkPath clipSimple = SkPath::Circle(70, 50, 20);
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SkRect r1 = { 10, 20, 70, 80 };
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SkPath clipComplex = SkPathBuilder().moveTo(40, 50)
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.arcTo(r1, 30, 300, false)
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.close()
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.detach();
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SkPath* firstClip = &clipSimple;
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SkPath* secondClip = &clipComplex;
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if (!fDoSimpleClipFirst) {
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std::swap(firstClip, secondClip);
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}
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SkPaint paint;
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paint.setAntiAlias(true);
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SkFont font(ToolUtils::create_portable_typeface(), 20);
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constexpr struct {
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SkClipOp fOp;
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const char* fName;
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} gOps[] = {
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{SkClipOp::kIntersect, "I"},
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{SkClipOp::kDifference, "D" },
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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 ? SkPathFillType::kInverseEvenOdd :
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SkPathFillType::kEvenOdd);
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secondClip->setFillType(doInvB ? SkPathFillType::kInverseEvenOdd :
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SkPathFillType::kEvenOdd);
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canvas->clipPath(*firstClip, 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->drawString(str.c_str(), txtX, SkIntToScalar(130), font, 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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using INHERITED = GM;
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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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} // namespace skiagm
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