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 "DecodeFile.h" 9 #include "Resources.h" 10 #include "Sample.h" 11 #include "SkBlurMaskFilter.h" 12 #include "SkCanvas.h" 13 #include "SkColorPriv.h" 14 #include "SkFont.h" 15 #include "SkPath.h" 16 #include "SkRandom.h" 17 #include "SkStream.h" 18 #include "SkTime.h" 19 #include "SkClipOpPriv.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 onQuery(Sample::Event * evt)36 bool onQuery(Sample::Event* evt) override { 37 if (Sample::TitleQ(*evt)) { 38 Sample::TitleR(evt, "IdentityScale"); 39 return true; 40 } 41 return this->INHERITED::onQuery(evt); 42 } 43 onDrawContent(SkCanvas * canvas)44 void onDrawContent(SkCanvas* canvas) override { 45 46 SkFont font(nullptr, 48); 47 SkPaint paint; 48 49 paint.setAntiAlias(true); 50 paint.setFilterQuality(kHigh_SkFilterQuality); 51 52 SkTime::DateTime time; 53 SkTime::GetDateTime(&time); 54 55 bool use_scale = (time.fSecond % 2 == 1); 56 const char *text; 57 58 canvas->save(); 59 if (use_scale) { 60 text = "Scaled = 1"; 61 } else { 62 63 SkRect r = { 100, 100, 356, 356 }; 64 SkPath clipPath; 65 clipPath.addRoundRect(r, SkIntToScalar(5), SkIntToScalar(5)); 66 canvas->clipPath(clipPath, kIntersect_SkClipOp, true); 67 text = "Scaled = 0"; 68 } 69 canvas->drawBitmap( fBM, 100, 100, &paint ); 70 canvas->restore(); 71 canvas->drawString(text, 100, 400, font, paint); 72 } 73 74 private: 75 typedef Sample INHERITED; 76 }; 77 78 ////////////////////////////////////////////////////////////////////////////// 79 80 DEF_SAMPLE( return new IdentityScaleView("images/mandrill_256.png"); ) 81
