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 "SampleCode.h" 10#include "SkView.h" 11#include "SkCanvas.h" 12#include "SkColorFilter.h" 13#include "SkColorPriv.h" 14#include "SkGradientShader.h" 15#include "SkGraphics.h" 16#include "SkPath.h" 17#include "SkRegion.h" 18#include "SkShader.h" 19#include "SkString.h" 20#include "SkTime.h" 21#include "SkUtils.h" 22 23static const char* gNames[] = { 24 "/skimages/background_01.png" 25}; 26 27class Filter2View : public SampleView { 28public: 29 SkBitmap* fBitmaps; 30 int fBitmapCount; 31 int fCurrIndex; 32 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 48 virtual ~Filter2View() { 49 delete[] fBitmaps; 50 } 51 52protected: 53 // overrides from SkEventSink 54 virtual bool onQuery(SkEvent* evt) { 55 if (SampleCode::TitleQ(*evt)) { 56 SkString str("Filter/Dither "); 57 str.append(gNames[fCurrIndex]); 58 SampleCode::TitleR(evt, str.c_str()); 59 return true; 60 } 61 return this->INHERITED::onQuery(evt); 62 } 63 64 virtual void onDrawContent(SkCanvas* canvas) { 65 canvas->translate(SkIntToScalar(10), SkIntToScalar(50)); 66 67 const SkScalar W = SkIntToScalar(fBitmaps[0].width() + 1); 68 const SkScalar H = SkIntToScalar(fBitmaps[0].height() + 1); 69 SkPaint paint; 70 71 const SkScalar scale = 0.897917f; 72 canvas->scale(SK_Scalar1, scale); 73 74 for (int k = 0; k < 2; k++) { 75 paint.setFilterQuality(k == 1 ? kLow_SkFilterQuality : kNone_SkFilterQuality); 76 for (int j = 0; j < 2; j++) { 77 paint.setDither(j == 1); 78 for (int i = 0; i < fBitmapCount; i++) { 79 SkScalar x = (k * fBitmapCount + j) * W; 80 SkScalar y = i * H; 81 x = SkScalarRoundToScalar(x); 82 y = SkScalarRoundToScalar(y); 83 canvas->drawBitmap(fBitmaps[i], x, y, &paint); 84 if (i == 0) { 85 SkPaint p; 86 p.setAntiAlias(true); 87 p.setTextAlign(SkPaint::kCenter_Align); 88 p.setTextSize(SkIntToScalar(18)); 89 SkString s("dither="); 90 s.appendS32(paint.isDither()); 91 s.append(" filter="); 92 s.appendS32(paint.getFilterQuality() != kNone_SkFilterQuality); 93 canvas->drawString(s, x + W/2, 94 y - p.getTextSize(), p); 95 } 96 if (k+j == 2) { 97 SkPaint p; 98 p.setAntiAlias(true); 99 p.setTextSize(SkIntToScalar(18)); 100 SkString s; 101 s.append(" depth="); 102 s.appendS32(fBitmaps[i].colorType() == kRGB_565_SkColorType ? 16 : 32); 103 canvas->drawString(s, x + W + SkIntToScalar(4), 104 y + H/2, p); 105 } 106 } 107 } 108 } 109 } 110 111private: 112 typedef SampleView INHERITED; 113}; 114 115////////////////////////////////////////////////////////////////////////////// 116 117static SkView* MyFactory() { return new Filter2View; } 118static SkViewRegister reg(MyFactory); 119