2a475eae62
Many tests and examples use drawText with a guess of how long the text is in bytes, or a call to strlen(). Add a helper to SkCanvas to simplify these examples. Add another helper for SkString. R=reed@google.com Change-Id: I0204a31e938f065606f08ee7cd9a6b36db791ee2 Reviewed-on: https://skia-review.googlesource.com/13642 Commit-Queue: Cary Clark <caryclark@google.com> Reviewed-by: Cary Clark <caryclark@google.com> Reviewed-by: Mike Reed <reed@google.com> Reviewed-by: Cary Clark <caryclark@skia.org>
133 lines
4.5 KiB
C++
133 lines
4.5 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 "sk_tool_utils.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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SkClipOp fOp;
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const char* fName;
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} gOps[] = {
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{kIntersect_SkClipOp, "I"},
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{kDifference_SkClipOp, "D" },
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{kUnion_SkClipOp, "U"},
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{kXOR_SkClipOp, "X" },
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{kReverseDifference_SkClipOp, "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, 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), 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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