gm/testgradient.cpp

   1 /*
   2  * Copyright 2017 Google Inc.
   3  *
   4  * Use of this source code is governed by a BSD-style license that can be
   5  * found in the LICENSE file.
   6  */
   7
   8 #include "gm.h"
   9
  10 #include "SkCanvas.h"
  11 #include "SkGradientShader.h"
  12 #include "SkRRect.h"
  13
  14 class TestGradientGM : public skiagm::GM {
  15 public:
  16     TestGradientGM() {}
  17
  18 protected:
  19     SkString onShortName() override {
  20         return SkString("testgradient");
  21     }
  22
  23     SkISize onISize() override {
  24         return SkISize::Make(800, 800);
  25     }
  26
  27     void onDraw(SkCanvas* canvas) override {
  28         // Set up a gradient paint for a rect.
  29         // And non-gradient paint for other objects.
  30         canvas->drawColor(SK_ColorWHITE);
  31
  32         SkPaint paint;
  33         paint.setStyle(SkPaint::kFill_Style);
  34         paint.setAntiAlias(true);
  35         paint.setStrokeWidth(4);
  36         paint.setColor(0xFFFE938C);
  37
  38         SkRect rect = SkRect::MakeXYWH(10, 10, 100, 160);
  39
  40         SkPoint points[2] = {
  41             SkPoint::Make(0.0f, 0.0f),
  42             SkPoint::Make(256.0f, 256.0f)
  43         };
  44         SkColor colors[2] = {SK_ColorBLUE, SK_ColorYELLOW};
  45         SkPaint newPaint(paint);
  46         newPaint.setShader(SkGradientShader::MakeLinear(
  47                 points, colors, nullptr, 2,
  48                 SkShader::kClamp_TileMode, 0, nullptr));
  49         canvas->drawRect(rect, newPaint);
  50
  51         SkRRect oval;
  52         oval.setOval(rect);
  53         oval.offset(40, 80);
  54         paint.setColor(0xFFE6B89C);
  55         canvas->drawRRect(oval, paint);
  56
  57         paint.setColor(0xFF9CAFB7);
  58         canvas->drawCircle(180, 50, 25, paint);
  59
  60         rect.offset(80, 50);
  61         paint.setColor(0xFF4281A4);
  62         paint.setStyle(SkPaint::kStroke_Style);
  63         canvas->drawRoundRect(rect, 10, 10, paint);
  64     }
  65
  66 private:
  67     typedef skiagm::GM INHERITED;
  68 };
  69
  70 // Register the GM
  71 DEF_GM( return new TestGradientGM; )