1 /* 2 * Copyright 2011 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 "Sample.h" 10 #include "SkCanvas.h" 11 #include "SkColorFilter.h" 12 #include "SkColorPriv.h" 13 #include "SkGradientShader.h" 14 #include "SkGraphics.h" 15 #include "SkPath.h" 16 #include "SkRegion.h" 17 #include "SkShader.h" 18 #include "SkString.h" 19 #include "SkTextUtils.h" 20 #include "SkTime.h" 21 #include "SkUTF.h" 22 23 static const char* gNames[] = { 24 "/skimages/background_01.png" 25 }; 26 27 class Filter2View : public Sample { 28 public: 29 SkBitmap* fBitmaps; 30 int fBitmapCount; 31 int fCurrIndex; 32 Filter2View()33 Filter2View() { 34 fBitmapCount = SK_ARRAY_COUNT(gNames)*2; 35 fBitmaps = new SkBitmap[fBitmapCount]; 36 37 for (int i = 0; i < fBitmapCount/2; i++) { 38 decode_file(gNames[i], &fBitmaps[i]); 39 } 40 for (int i = fBitmapCount/2; i < fBitmapCount; i++) { 41 decode_file(gNames[i-fBitmapCount/2], &fBitmaps[i], kRGB_565_SkColorType); 42 } 43 fCurrIndex = 0; 44 45 this->setBGColor(SK_ColorGRAY); 46 } 47 ~Filter2View()48 virtual ~Filter2View() { 49 delete[] fBitmaps; 50 } 51 52 protected: onQuery(Sample::Event * evt)53 virtual bool onQuery(Sample::Event* evt) { 54 if (Sample::TitleQ(*evt)) { 55 SkString str("Filter/Dither "); 56 str.append(gNames[fCurrIndex]); 57 Sample::TitleR(evt, str.c_str()); 58 return true; 59 } 60 return this->INHERITED::onQuery(evt); 61 } 62 onDrawContent(SkCanvas * canvas)63 virtual void onDrawContent(SkCanvas* canvas) { 64 canvas->translate(SkIntToScalar(10), SkIntToScalar(50)); 65 66 const SkScalar W = SkIntToScalar(fBitmaps[0].width() + 1); 67 const SkScalar H = SkIntToScalar(fBitmaps[0].height() + 1); 68 SkPaint paint; 69 70 const SkScalar scale = 0.897917f; 71 canvas->scale(SK_Scalar1, scale); 72 73 for (int k = 0; k < 2; k++) { 74 paint.setFilterQuality(k == 1 ? kLow_SkFilterQuality : kNone_SkFilterQuality); 75 for (int j = 0; j < 2; j++) { 76 paint.setDither(j == 1); 77 for (int i = 0; i < fBitmapCount; i++) { 78 SkScalar x = (k * fBitmapCount + j) * W; 79 SkScalar y = i * H; 80 x = SkScalarRoundToScalar(x); 81 y = SkScalarRoundToScalar(y); 82 canvas->drawBitmap(fBitmaps[i], x, y, &paint); 83 SkFont font; 84 font.setSize(SkIntToScalar(18)); 85 if (i == 0) { 86 SkString s("dither="); 87 s.appendS32(paint.isDither()); 88 s.append(" filter="); 89 s.appendS32(paint.getFilterQuality() != kNone_SkFilterQuality); 90 SkTextUtils::DrawString(canvas, s.c_str(), x + W/2, y - font.getSize(), font, SkPaint(), 91 SkTextUtils::kCenter_Align); 92 } 93 if (k+j == 2) { 94 SkString s; 95 s.append(" depth="); 96 s.appendS32(fBitmaps[i].colorType() == kRGB_565_SkColorType ? 16 : 32); 97 SkTextUtils::DrawString(canvas, s.c_str(), x + W + SkIntToScalar(4), y + H/2, font, SkPaint()); 98 } 99 } 100 } 101 } 102 } 103 104 private: 105 typedef Sample INHERITED; 106 }; 107 108 ////////////////////////////////////////////////////////////////////////////// 109 110 DEF_SAMPLE( return new Filter2View(); ) 111
