| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm/gm.h" |
| #include "include/core/SkBlurTypes.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "src/base/SkRandom.h" |
| |
| #include <stddef.h> |
| |
| namespace skiagm { |
| |
| class PointsGM : public GM { |
| public: |
| PointsGM() {} |
| |
| protected: |
| SkString getName() const override { return SkString("points"); } |
| |
| SkISize getISize() override { return SkISize::Make(640, 490); } |
| |
| static void fill_pts(SkPoint pts[], size_t n, SkRandom* rand) { |
| for (size_t i = 0; i < n; i++) { |
| // Compute these independently and store in variables, rather |
| // than in the parameter-passing expression, to get consistent |
| // evaluation order across compilers. |
| SkScalar y = rand->nextUScalar1() * 480; |
| SkScalar x = rand->nextUScalar1() * 640; |
| pts[i].set(x, y); |
| } |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->translate(SK_Scalar1, SK_Scalar1); |
| |
| SkRandom rand; |
| SkPaint p0, p1, p2, p3; |
| const size_t n = 99; |
| |
| p0.setColor(SK_ColorRED); |
| p1.setColor(SK_ColorGREEN); |
| p2.setColor(SK_ColorBLUE); |
| p3.setColor(SK_ColorWHITE); |
| |
| p0.setStrokeWidth(SkIntToScalar(4)); |
| p2.setStrokeCap(SkPaint::kRound_Cap); |
| p2.setStrokeWidth(SkIntToScalar(6)); |
| |
| SkPoint* pts = new SkPoint[n]; |
| fill_pts(pts, n, &rand); |
| |
| canvas->drawPoints(SkCanvas::kPolygon_PointMode, n, pts, p0); |
| canvas->drawPoints(SkCanvas::kLines_PointMode, n, pts, p1); |
| canvas->drawPoints(SkCanvas::kPoints_PointMode, n, pts, p2); |
| canvas->drawPoints(SkCanvas::kPoints_PointMode, n, pts, p3); |
| |
| delete[] pts; |
| } |
| |
| private: |
| using INHERITED = GM; |
| }; |
| DEF_GM( return new PointsGM; ) |
| } // namespace skiagm |
| |
| #include "include/core/SkMaskFilter.h" |
| |
| DEF_SIMPLE_GM(points_maskfilter, canvas, 512, 256) { |
| constexpr int N = 30; |
| SkPoint pts[N]; |
| |
| SkRandom rand; |
| for (SkPoint& p : pts) { |
| p.fX = rand.nextF() * 220 + 18; |
| p.fY = rand.nextF() * 220 + 18; |
| } |
| |
| auto mf = SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 6); |
| const SkPaint::Cap caps[] = { SkPaint::kSquare_Cap, SkPaint::kRound_Cap }; |
| |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setStroke(true); |
| paint.setStrokeWidth(10); |
| |
| for (auto cap : caps) { |
| paint.setStrokeCap(cap); |
| |
| paint.setMaskFilter(mf); |
| paint.setColor(SK_ColorBLACK); |
| canvas->drawPoints(SkCanvas::kPoints_PointMode, N, pts, paint); |
| |
| paint.setMaskFilter(nullptr); |
| paint.setColor(SK_ColorRED); |
| canvas->drawPoints(SkCanvas::kPoints_PointMode, N, pts, paint); |
| |
| canvas->translate(256, 0); |
| } |
| } |