Index: gm/stroke_rect_shader.cpp |
diff --git a/gm/stroke_rect_shader.cpp b/gm/stroke_rect_shader.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..0eb09e9a6f81e4d60a22374081714af0affbf64f |
--- /dev/null |
+++ b/gm/stroke_rect_shader.cpp |
@@ -0,0 +1,61 @@ |
+/* |
+ * 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.h" |
+#include "SkGradientShader.h" |
+ |
+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) { |
+ static constexpr SkRect kRect {0, 0, 100, 100}; |
+ static constexpr SkPoint kPts[] {{kRect.fLeft, kRect.fTop}, {kRect.fRight, kRect.fBottom}}; |
+ static constexpr SkColor kColors[] {SK_ColorRED, SK_ColorBLUE}; |
+ SkPaint paint; |
+ sk_sp<SkShader> shader = SkGradientShader::MakeLinear(kPts, kColors, nullptr, 2, |
+ SkShader::kClamp_TileMode); |
+ paint.setShader(std::move(shader)); |
+ paint.setStyle(SkPaint::kStroke_Style); |
+ // 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()); |
+ static constexpr SkScalar kPad = 20; |
+ for (auto aa : {false, true}) { |
+ paint.setAntiAlias(aa); |
+ canvas->save(); |
+ |
+ static 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); |
+ } |
+} |
+ |
+} |