mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 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 "gm.h" |
| 9 | #include "SkSurface.h" |
| 10 | #include "SkCanvas.h" |
mike@reedtribe.org | d829b5c | 2012-07-31 03:57:11 +0000 | [diff] [blame] | 11 | #include "SkStream.h" |
| 12 | #include "SkData.h" |
| 13 | |
| 14 | static SkData* fileToData(const char path[]) { |
| 15 | SkFILEStream stream(path); |
| 16 | if (!stream.isValid()) { |
| 17 | return SkData::NewEmpty(); |
| 18 | } |
| 19 | size_t size = stream.getLength(); |
| 20 | void* mem = sk_malloc_throw(size); |
| 21 | stream.read(mem, size); |
| 22 | return SkData::NewFromMalloc(mem, size); |
| 23 | } |
| 24 | |
| 25 | static void drawJpeg(SkCanvas* canvas, const SkISize& size) { |
| 26 | SkAutoDataUnref data(fileToData("/Users/mike/Downloads/skia.google.jpeg")); |
| 27 | SkImage* image = SkImage::NewEncodedData(data); |
| 28 | if (image) { |
| 29 | SkAutoCanvasRestore acr(canvas, true); |
| 30 | canvas->scale(size.width() * 1.0f / image->width(), |
| 31 | size.height() * 1.0f / image->height()); |
| 32 | image->draw(canvas,0, 0, NULL); |
| 33 | image->unref(); |
| 34 | } |
| 35 | } |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 36 | |
| 37 | static void drawContents(SkSurface* surface, SkColor fillC) { |
| 38 | SkSize size = SkSize::Make(surface->width(), surface->height()); |
mike@reedtribe.org | d2782ed | 2012-07-31 02:45:15 +0000 | [diff] [blame] | 39 | SkCanvas* canvas = surface->getCanvas(); |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 40 | |
| 41 | SkScalar stroke = size.fWidth / 10; |
| 42 | SkScalar radius = (size.fWidth - stroke) / 2; |
| 43 | |
| 44 | SkPaint paint; |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame^] | 45 | |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 46 | paint.setAntiAlias(true); |
| 47 | paint.setColor(fillC); |
| 48 | canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame^] | 49 | |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 50 | paint.setStyle(SkPaint::kStroke_Style); |
| 51 | paint.setStrokeWidth(stroke); |
| 52 | paint.setColor(SK_ColorBLACK); |
| 53 | canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint); |
| 54 | } |
| 55 | |
| 56 | static void test_surface(SkCanvas* canvas, SkSurface* surf) { |
| 57 | drawContents(surf, SK_ColorRED); |
| 58 | SkImage* imgR = surf->newImageShapshot(); |
| 59 | |
| 60 | drawContents(surf, SK_ColorGREEN); |
| 61 | SkImage* imgG = surf->newImageShapshot(); |
| 62 | |
| 63 | drawContents(surf, SK_ColorBLUE); |
| 64 | |
mike@reedtribe.org | d2782ed | 2012-07-31 02:45:15 +0000 | [diff] [blame] | 65 | SkPaint paint; |
| 66 | // paint.setFilterBitmap(true); |
| 67 | // paint.setAlpha(0x80); |
| 68 | |
| 69 | imgR->draw(canvas, 0, 0, &paint); |
| 70 | imgG->draw(canvas, 0, 80, &paint); |
| 71 | surf->draw(canvas, 0, 160, &paint); |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 72 | |
| 73 | imgG->unref(); |
| 74 | imgR->unref(); |
| 75 | } |
| 76 | |
| 77 | class ImageGM : public skiagm::GM { |
| 78 | void* fBuffer; |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 79 | size_t fBufferSize; |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 80 | SkSize fSize; |
| 81 | enum { |
| 82 | W = 64, |
| 83 | H = 64, |
| 84 | RB = W * 4 + 8, |
| 85 | }; |
| 86 | public: |
| 87 | ImageGM() { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 88 | fBufferSize = RB * H; |
| 89 | fBuffer = sk_malloc_throw(fBufferSize); |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 90 | fSize.set(SkIntToScalar(W), SkIntToScalar(H)); |
| 91 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame^] | 92 | |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 93 | virtual ~ImageGM() { |
| 94 | sk_free(fBuffer); |
| 95 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame^] | 96 | |
| 97 | |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 98 | protected: |
| 99 | virtual SkString onShortName() { |
| 100 | return SkString("image"); |
| 101 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame^] | 102 | |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 103 | virtual SkISize onISize() { |
| 104 | return SkISize::Make(640, 480); |
| 105 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame^] | 106 | |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 107 | virtual void onDraw(SkCanvas* canvas) { |
mike@reedtribe.org | d829b5c | 2012-07-31 03:57:11 +0000 | [diff] [blame] | 108 | drawJpeg(canvas, this->getISize()); |
| 109 | |
mike@reedtribe.org | d2782ed | 2012-07-31 02:45:15 +0000 | [diff] [blame] | 110 | canvas->translate(10, 10); |
| 111 | canvas->scale(2, 2); |
| 112 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 113 | // since we draw into this directly, we need to start fresh |
| 114 | sk_bzero(fBuffer, fBufferSize); |
| 115 | |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 116 | SkImage::Info info; |
| 117 | |
| 118 | info.fWidth = W; |
| 119 | info.fHeight = H; |
| 120 | info.fColorType = SkImage::kPMColor_ColorType; |
| 121 | info.fAlphaType = SkImage::kPremul_AlphaType; |
| 122 | SkAutoTUnref<SkSurface> surf0(SkSurface::NewRasterDirect(info, NULL, fBuffer, RB)); |
| 123 | SkAutoTUnref<SkSurface> surf1(SkSurface::NewRaster(info, NULL)); |
| 124 | SkAutoTUnref<SkSurface> surf2(SkSurface::NewPicture(info.fWidth, info.fHeight)); |
| 125 | |
| 126 | test_surface(canvas, surf0); |
| 127 | canvas->translate(80, 0); |
| 128 | test_surface(canvas, surf1); |
| 129 | canvas->translate(80, 0); |
| 130 | test_surface(canvas, surf2); |
| 131 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame^] | 132 | |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 133 | private: |
| 134 | typedef skiagm::GM INHERITED; |
| 135 | }; |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame^] | 136 | |
mike@reedtribe.org | 70e3590 | 2012-07-29 20:38:16 +0000 | [diff] [blame] | 137 | ////////////////////////////////////////////////////////////////////////////// |
| 138 | |
| 139 | static skiagm::GM* MyFactory(void*) { return new ImageGM; } |
| 140 | static skiagm::GMRegistry reg(MyFactory); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame^] | 141 | |