diff options
| -rw-r--r-- | gm/gradients.cpp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/gm/gradients.cpp b/gm/gradients.cpp index 02217c9d65..ea2b8eae6b 100644 --- a/gm/gradients.cpp +++ b/gm/gradients.cpp @@ -490,4 +490,47 @@ private: }; DEF_GM( return new RadialGradient4GM; ) +class LinearGradientGM : public GM { + SkAutoTUnref<SkShader> fShader[100]; + +protected: + SkString onShortName() override { return SkString("linear_gradient"); } + const SkScalar kWidthBump = 30.f; + const SkScalar kHeight = 5.f; + const SkScalar kMinWidth = 540.f; + + SkISize onISize() override { return SkISize::Make(500, 500); } + + void onOnceBeforeDraw() override { + SkPoint pts[2] = { {0, 0}, {0, 0} }; + const SkColor colors[] = { SK_ColorWHITE, SK_ColorWHITE, 0xFF008200, 0xFF008200, + SK_ColorWHITE, SK_ColorWHITE }; + const SkScalar unitPos[] = { 0, 50, 70, 500, 540 }; + SkScalar pos[6]; + pos[5] = 1; + for (int index = 0; index < (int) SK_ARRAY_COUNT(fShader); ++index) { + pts[1].fX = 500.f + index * kWidthBump; + for (int inner = 0; inner < (int) SK_ARRAY_COUNT(unitPos); ++inner) { + pos[inner] = unitPos[inner] / (kMinWidth + index * kWidthBump); + } + fShader[index].reset(SkGradientShader::CreateLinear(pts, colors, pos, + SK_ARRAY_COUNT(gColors), SkShader::kClamp_TileMode)); + } + } + + void onDraw(SkCanvas* canvas) override { + SkPaint paint; + paint.setAntiAlias(true); + for (int index = 0; index < (int) SK_ARRAY_COUNT(fShader); ++index) { + paint.setShader(fShader[index]); + canvas->drawRect(SkRect::MakeLTRB(0, index * kHeight, kMinWidth + index * kWidthBump, + (index + 1) * kHeight), paint); + } + } + +private: + typedef GM INHERITED; +}; +DEF_GM( return new LinearGradientGM; ) + } |