gm/rrectclipdrawpaint.cpp

   1 /*
   2  * Copyright 2016 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 #include "SkPath.h"
  10 #include "SkGradientShader.h"
  11
  12 // Exercises code in GrRenderTargetContext that attempts to replace a rrect clip/draw paint with
  13 // draw rrect.
  14 DEF_SIMPLE_GM(rrect_clip_draw_paint, canvas, 256, 256) {
  15     SkRRect rrect = SkRRect::MakeRectXY(SkRect::MakeXYWH(10.f, 10.f, 236.f, 236.f), 30.f, 40.f);
  16
  17     SkPaint p;
  18     p.setColor(SK_ColorRED);
  19
  20     SkMatrix zoomOut;
  21     zoomOut.setScale(0.7f, 0.7f, 128.f, 128.f);
  22
  23     const SkRect layerRect = SkRect::MakeWH(256.f, 256.f);
  24     canvas->saveLayer(layerRect, nullptr);
  25     canvas->clipRRect(rrect, true);
  26     canvas->drawPaint(p);
  27     canvas->restore();
  28
  29     canvas->concat(zoomOut);
  30     p.setColor(SK_ColorBLUE);
  31     canvas->saveLayer(layerRect, nullptr);
  32     canvas->clipRRect(rrect, false);
  33     canvas->drawPaint(p);
  34     canvas->restore();
  35
  36     constexpr SkPoint kPts[] = {{0.f, 0.f}, {256.f, 256.f}};
  37     constexpr SkColor kColors1[] = {SK_ColorCYAN, SK_ColorGREEN};
  38     p.setShader(SkGradientShader::MakeLinear(kPts, kColors1, nullptr, 2,
  39                                              SkShader::kClamp_TileMode));
  40     canvas->concat(zoomOut);
  41     canvas->saveLayer(layerRect, nullptr);
  42     canvas->clipRRect(rrect, true);
  43     canvas->drawPaint(p);
  44     canvas->restore();
  45
  46     constexpr SkColor kColors2[] = {SK_ColorMAGENTA, SK_ColorGRAY};
  47     p.setShader(SkGradientShader::MakeRadial({128.f, 128.f}, 128.f, kColors2, nullptr, 2,
  48                                              SkShader::kClamp_TileMode));
  49     canvas->concat(zoomOut);
  50     canvas->saveLayer(layerRect, nullptr);
  51     canvas->clipRRect(rrect, false);
  52     canvas->drawPaint(p);
  53     canvas->restore();
  54 }