1 /* 2 * Copyright 2015 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/gm.h" 9 #include "include/core/SkBitmap.h" 10 #include "include/core/SkCanvas.h" 11 #include "include/core/SkColor.h" 12 #include "include/core/SkMatrix.h" 13 #include "include/core/SkPaint.h" 14 #include "include/core/SkRect.h" 15 #include "include/core/SkShader.h" 16 #include "include/core/SkSize.h" 17 #include "include/core/SkString.h" 18 #include "include/private/SkTArray.h" 19 20 /** This GM draws with invalid paints. It should draw nothing other than the background. */ 21 class BadPaintGM : public skiagm::GM { 22 public: BadPaintGM()23 BadPaintGM() {} 24 25 protected: onShortName()26 SkString onShortName() override { return SkString("badpaint"); } 27 onISize()28 SkISize onISize() override { return SkISize::Make(100, 100); } 29 onOnceBeforeDraw()30 void onOnceBeforeDraw() override { 31 SkBitmap emptyBmp; 32 33 SkBitmap blueBmp; 34 blueBmp.allocN32Pixels(10, 10); 35 blueBmp.eraseColor(SK_ColorBLUE); 36 37 SkMatrix badMatrix; 38 badMatrix.setAll(0, 0, 0, 0, 0, 0, 0, 0, 0); 39 40 // Empty bitmap. 41 fPaints.push_back().setColor(SK_ColorGREEN); 42 fPaints.back().setShader(emptyBmp.makeShader(SkSamplingOptions())); 43 44 // Non-invertible local matrix. 45 fPaints.push_back().setColor(SK_ColorGREEN); 46 fPaints.back().setShader(blueBmp.makeShader(SkSamplingOptions(), badMatrix)); 47 } 48 onDraw(SkCanvas * canvas)49 void onDraw(SkCanvas* canvas) override { 50 SkRect rect = SkRect::MakeXYWH(10, 10, 80, 80); 51 for (int i = 0; i < fPaints.count(); ++i) { 52 canvas->drawRect(rect, fPaints[i]); 53 } 54 } 55 56 private: 57 SkTArray<SkPaint> fPaints; 58 59 using INHERITED = skiagm::GM; 60 }; 61 62 ///////////////////////////////////////////////////////////////////////////////////// 63 64 DEF_GM(return new BadPaintGM;) 65