| /* |
| * Copyright 2016 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/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkShader.h" |
| #include "include/core/SkTileMode.h" |
| #include "include/effects/SkGradientShader.h" |
| |
| #include <initializer_list> |
| #include <utility> |
| |
| namespace skiagm { |
| |
| // Draw stroked rects (both AA and nonAA) with all the types of joins: |
| // bevel, miter, miter-limited-to-bevel, round |
| // and as a hairline. |
| DEF_SIMPLE_GM(stroke_rect_shader, canvas, 690, 300) { |
| constexpr SkRect kRect {0, 0, 100, 100}; |
| constexpr SkPoint kPts[] {{kRect.fLeft, kRect.fTop}, {kRect.fRight, kRect.fBottom}}; |
| constexpr SkColor kColors[] {SK_ColorRED, SK_ColorBLUE}; |
| sk_sp<SkShader> shader = SkGradientShader::MakeLinear(kPts, kColors, nullptr, 2, |
| SkTileMode::kClamp); |
| |
| // Do a large initial translate so that local coords disagree with device coords significantly |
| // for the first rect drawn. |
| canvas->translate(kRect.centerX(), kRect.centerY()); |
| constexpr SkScalar kPad = 20; |
| for (auto aa : {false, true}) { |
| SkPaint paint; |
| paint.setShader(shader); |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setAntiAlias(aa); |
| |
| canvas->save(); |
| |
| constexpr SkScalar kStrokeWidth = 10; |
| paint.setStrokeWidth(kStrokeWidth); |
| |
| paint.setStrokeJoin(SkPaint::kBevel_Join); |
| canvas->drawRect(kRect, paint); |
| canvas->translate(kRect.width() + kPad, 0); |
| |
| paint.setStrokeJoin(SkPaint::kMiter_Join); |
| canvas->drawRect(kRect, paint); |
| canvas->translate(kRect.width() + kPad, 0); |
| |
| // This miter limit should effectively produce a bevel join. |
| paint.setStrokeMiter(0.01f); |
| canvas->drawRect(kRect, paint); |
| canvas->translate(kRect.width() + kPad, 0); |
| |
| paint.setStrokeJoin(SkPaint::kRound_Join); |
| canvas->drawRect(kRect, paint); |
| canvas->translate(kRect.width() + kPad, 0); |
| |
| paint.setStrokeWidth(0); |
| canvas->drawRect(kRect, paint); |
| |
| canvas->restore(); |
| canvas->translate(0, kRect.height() + kPad); |
| } |
| } |
| |
| } // namespace skiagm |