| /* |
| * Copyright 2012 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/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPath.h" |
| #include "include/core/SkPathUtils.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTypes.h" |
| #include "include/private/base/SkTemplates.h" |
| |
| #include <float.h> |
| |
| using namespace skia_private; |
| |
| #define STROKE_WIDTH SkIntToScalar(20) |
| |
| static void draw_path(SkCanvas* canvas, const SkPath& path, const SkRect& rect, |
| SkPaint::Join join, int doFill) { |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setStyle(doFill ? SkPaint::kStrokeAndFill_Style : SkPaint::kStroke_Style); |
| |
| paint.setColor(SK_ColorGRAY); |
| paint.setStrokeWidth(STROKE_WIDTH); |
| paint.setStrokeJoin(join); |
| canvas->drawRect(rect, paint); |
| |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setStrokeWidth(0); |
| paint.setColor(SK_ColorRED); |
| canvas->drawPath(path, paint); |
| |
| paint.setStrokeWidth(3); |
| paint.setStrokeJoin(SkPaint::kMiter_Join); |
| int n = path.countPoints(); |
| AutoTArray<SkPoint> points(n); |
| path.getPoints(points.get(), n); |
| canvas->drawPoints(SkCanvas::kPoints_PointMode, n, points.get(), paint); |
| } |
| |
| /* |
| * Test calling SkStroker for rectangles. Cases to cover: |
| * |
| * geometry: normal, small (smaller than stroke-width), empty, inverted |
| * joint-type for the corners |
| */ |
| class StrokeRectGM : public skiagm::GM { |
| public: |
| StrokeRectGM() {} |
| |
| protected: |
| SkString getName() const override { return SkString("strokerect"); } |
| |
| SkISize getISize() override { return SkISize::Make(1400, 740); } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->drawColor(SK_ColorWHITE); |
| canvas->translate(STROKE_WIDTH*3/2, STROKE_WIDTH*3/2); |
| |
| SkPaint paint; |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setStrokeWidth(STROKE_WIDTH); |
| |
| constexpr SkPaint::Join gJoins[] = { |
| SkPaint::kMiter_Join, SkPaint::kRound_Join, SkPaint::kBevel_Join |
| }; |
| |
| constexpr SkScalar W = 80; |
| constexpr SkScalar H = 80; |
| constexpr SkRect gRects[] = { |
| { 0, 0, W, H }, |
| { W, 0, 0, H }, |
| { 0, H, W, 0 }, |
| { 0, 0, STROKE_WIDTH, H }, |
| { 0, 0, W, STROKE_WIDTH }, |
| { 0, 0, STROKE_WIDTH/2, STROKE_WIDTH/2 }, |
| { 0, 0, W, 0 }, |
| { 0, 0, 0, H }, |
| { 0, 0, 0, 0 }, |
| { 0, 0, W, FLT_EPSILON }, |
| { 0, 0, FLT_EPSILON, H }, |
| { 0, 0, FLT_EPSILON, FLT_EPSILON }, |
| }; |
| |
| for (int doFill = 0; doFill <= 1; ++doFill) { |
| for (size_t i = 0; i < std::size(gJoins); ++i) { |
| SkPaint::Join join = gJoins[i]; |
| paint.setStrokeJoin(join); |
| |
| SkAutoCanvasRestore acr(canvas, true); |
| for (size_t j = 0; j < std::size(gRects); ++j) { |
| const SkRect& r = gRects[j]; |
| |
| SkPath path, fillPath; |
| path.addRect(r); |
| skpathutils::FillPathWithPaint(path, paint, &fillPath); |
| draw_path(canvas, fillPath, r, join, doFill); |
| |
| canvas->translate(W + 2 * STROKE_WIDTH, 0); |
| } |
| acr.restore(); |
| canvas->translate(0, H + 2 * STROKE_WIDTH); |
| } |
| paint.setStyle(SkPaint::kStrokeAndFill_Style); |
| } |
| } |
| |
| private: |
| using INHERITED = GM; |
| }; |
| DEF_GM(return new StrokeRectGM;) |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| /* |
| * Exercise rect-stroking (which is specialized from paths) when the resulting stroke-width is |
| * non-square. See https://bugs.chromium.org/p/skia/issues/detail?id=5408 |
| */ |
| DEF_SIMPLE_GM(strokerect_anisotropic_5408, canvas, 200, 50) { |
| SkPaint p; |
| p.setStyle(SkPaint::kStroke_Style); |
| p.setStrokeWidth(6); |
| |
| canvas->scale(10, 1); |
| SkRect r = SkRect::MakeXYWH(5, 20, 10, 10); |
| canvas->drawRect(r, p); |
| } |