1 /* 2 * Copyright 2014 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 "include/core/SkCanvas.h" 9 #include "include/core/SkColorPriv.h" 10 #include "include/core/SkFont.h" 11 #include "include/core/SkPath.h" 12 #include "include/core/SkStream.h" 13 #include "include/core/SkTime.h" 14 #include "include/effects/SkBlurMaskFilter.h" 15 #include "include/utils/SkRandom.h" 16 #include "samplecode/DecodeFile.h" 17 #include "samplecode/Sample.h" 18 #include "src/core/SkClipOpPriv.h" 19 #include "tools/Resources.h" 20 21 // Intended to exercise pixel snapping observed with scaled images (and 22 // with non-scaled images, but for a different reason): Bug 1145 23 24 class IdentityScaleView : public Sample { 25 public: IdentityScaleView(const char imageFilename[])26 IdentityScaleView(const char imageFilename[]) { 27 if (!DecodeDataToBitmap(GetResourceAsData(imageFilename), &fBM)) { 28 fBM.allocN32Pixels(1, 1); 29 *(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad 30 } 31 } 32 33 protected: 34 SkBitmap fBM; 35 name()36 SkString name() override { return SkString("IdentityScale"); } 37 onDrawContent(SkCanvas * canvas)38 void onDrawContent(SkCanvas* canvas) override { 39 40 SkFont font(nullptr, 48); 41 SkPaint paint; 42 43 paint.setAntiAlias(true); 44 paint.setFilterQuality(kHigh_SkFilterQuality); 45 46 SkTime::DateTime time; 47 SkTime::GetDateTime(&time); 48 49 bool use_scale = (time.fSecond % 2 == 1); 50 const char *text; 51 52 canvas->save(); 53 if (use_scale) { 54 text = "Scaled = 1"; 55 } else { 56 57 SkRect r = { 100, 100, 356, 356 }; 58 SkPath clipPath; 59 clipPath.addRoundRect(r, SkIntToScalar(5), SkIntToScalar(5)); 60 canvas->clipPath(clipPath, kIntersect_SkClipOp, true); 61 text = "Scaled = 0"; 62 } 63 canvas->drawBitmap( fBM, 100, 100, &paint ); 64 canvas->restore(); 65 canvas->drawString(text, 100, 400, font, paint); 66 } 67 68 private: 69 typedef Sample INHERITED; 70 }; 71 72 ////////////////////////////////////////////////////////////////////////////// 73 74 DEF_SAMPLE( return new IdentityScaleView("images/mandrill_256.png"); ) 75
