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| 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 "gm.h" |
| 9 |
| 10 #include "Resources.h" |
| 11 #include "SampleCode.h" |
| 12 #include "SkBlurMaskFilter.h" |
| 13 #include "SkCanvas.h" |
| 14 #include "SkColorPriv.h" |
| 15 #include "SkImageDecoder.h" |
| 16 #include "SkRandom.h" |
| 17 #include "SkStream.h" |
| 18 #include "SkTime.h" |
| 19 |
| 20 // Intended to exercise pixel snapping observed with scaled images (and |
| 21 // with non-scaled images, but for a different reason): Bug 1145 |
| 22 |
| 23 class IdentityScaleView : public SampleView { |
| 24 public: |
| 25 IdentityScaleView(const char imageFilename[]) { |
| 26 SkString resourcePath = GetResourcePath(imageFilename); |
| 27 SkImageDecoder* codec = NULL; |
| 28 SkFILEStream stream(resourcePath.c_str()); |
| 29 if (stream.isValid()) { |
| 30 codec = SkImageDecoder::Factory(&stream); |
| 31 } |
| 32 if (codec) { |
| 33 stream.rewind(); |
| 34 codec->decode(&stream, &fBM, kN32_SkColorType, SkImageDecoder::kDecode
Pixels_Mode); |
| 35 SkDELETE(codec); |
| 36 } else { |
| 37 fBM.allocN32Pixels(1, 1); |
| 38 *(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad |
| 39 } |
| 40 } |
| 41 |
| 42 protected: |
| 43 SkBitmap fBM; |
| 44 |
| 45 // overrides from SkEventSink |
| 46 virtual bool onQuery(SkEvent* evt) SK_OVERRIDE { |
| 47 if (SampleCode::TitleQ(*evt)) { |
| 48 SampleCode::TitleR(evt, "IdentityScale"); |
| 49 return true; |
| 50 } |
| 51 return this->INHERITED::onQuery(evt); |
| 52 } |
| 53 |
| 54 virtual void onDrawContent(SkCanvas* canvas) SK_OVERRIDE { |
| 55 |
| 56 SkPaint paint; |
| 57 |
| 58 paint.setAntiAlias(true); |
| 59 paint.setTextSize(48); |
| 60 paint.setFilterLevel(SkPaint::kHigh_FilterLevel); |
| 61 |
| 62 SkTime::DateTime time; |
| 63 SkTime::GetDateTime(&time); |
| 64 |
| 65 bool use_scale = (time.fSecond % 2 == 1); |
| 66 const char *text; |
| 67 |
| 68 canvas->save(); |
| 69 if (use_scale) { |
| 70 text = "Scaled = 1"; |
| 71 } else { |
| 72 |
| 73 SkRect r = { 100, 100, 356, 356 }; |
| 74 SkPath clipPath; |
| 75 clipPath.addRoundRect(r, SkIntToScalar(5), SkIntToScalar(5)); |
| 76 canvas->clipPath(clipPath, SkRegion::kIntersect_Op, SkToBool(1)); |
| 77 text = "Scaled = 0"; |
| 78 } |
| 79 canvas->drawBitmap( fBM, 100, 100, &paint ); |
| 80 canvas->restore(); |
| 81 canvas->drawText( text, strlen(text), 100, 400, paint ); |
| 82 this->inval(NULL); |
| 83 } |
| 84 |
| 85 private: |
| 86 typedef SampleView INHERITED; |
| 87 }; |
| 88 |
| 89 ////////////////////////////////////////////////////////////////////////////// |
| 90 |
| 91 static SkView* MyFactory() { return new IdentityScaleView("mandrill_256.png"); } |
| 92 static SkViewRegister reg(MyFactory); |
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