reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 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 "SkCanvas.h" |
reed@google.com | a4f8137 | 2012-11-15 15:56:38 +0000 | [diff] [blame] | 10 | #include "SkGradientShader.h" |
reed@google.com | 86eca47 | 2012-11-15 17:24:23 +0000 | [diff] [blame^] | 11 | #include "SkSurface.h" |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 12 | |
reed@google.com | a4f8137 | 2012-11-15 15:56:38 +0000 | [diff] [blame] | 13 | #define W SkIntToScalar(80) |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 14 | #define H SkIntToScalar(60) |
| 15 | |
reed@google.com | a4f8137 | 2012-11-15 15:56:38 +0000 | [diff] [blame] | 16 | typedef void (*PaintProc)(SkPaint*); |
| 17 | |
| 18 | static void identity_paintproc(SkPaint* paint) {} |
| 19 | static void gradient_paintproc(SkPaint* paint) { |
| 20 | const SkColor colors[] = { SK_ColorGREEN, SK_ColorBLUE }; |
| 21 | const SkPoint pts[] = { { 0, 0 }, { W, H } }; |
| 22 | SkShader* s = SkGradientShader::CreateLinear(pts, colors, NULL, |
| 23 | SK_ARRAY_COUNT(colors), |
| 24 | SkShader::kClamp_TileMode); |
| 25 | paint->setShader(s)->unref(); |
| 26 | } |
| 27 | |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 28 | typedef void (*Proc)(SkCanvas*, const SkPaint&); |
| 29 | |
| 30 | static void draw_hair(SkCanvas* canvas, const SkPaint& paint) { |
| 31 | SkPaint p(paint); |
| 32 | p.setStrokeWidth(0); |
| 33 | canvas->drawLine(0, 0, W, H, p); |
| 34 | } |
| 35 | |
| 36 | static void draw_thick(SkCanvas* canvas, const SkPaint& paint) { |
| 37 | SkPaint p(paint); |
| 38 | p.setStrokeWidth(H/5); |
| 39 | canvas->drawLine(0, 0, W, H, p); |
| 40 | } |
| 41 | |
| 42 | static void draw_rect(SkCanvas* canvas, const SkPaint& paint) { |
| 43 | canvas->drawRect(SkRect::MakeWH(W, H), paint); |
| 44 | } |
| 45 | |
| 46 | static void draw_oval(SkCanvas* canvas, const SkPaint& paint) { |
| 47 | canvas->drawOval(SkRect::MakeWH(W, H), paint); |
| 48 | } |
| 49 | |
| 50 | static void draw_text(SkCanvas* canvas, const SkPaint& paint) { |
| 51 | SkPaint p(paint); |
| 52 | p.setTextSize(H/4); |
reed@google.com | a4f8137 | 2012-11-15 15:56:38 +0000 | [diff] [blame] | 53 | canvas->drawText("Hamburge", 8, 0, H*2/3, p); |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | class SrcModeGM : public skiagm::GM { |
| 57 | SkPath fPath; |
| 58 | public: |
| 59 | SrcModeGM() { |
reed@google.com | 86eca47 | 2012-11-15 17:24:23 +0000 | [diff] [blame^] | 60 | this->setBGColor(SK_ColorBLACK); |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | protected: |
| 64 | virtual SkString onShortName() { |
| 65 | return SkString("srcmode"); |
| 66 | } |
| 67 | |
| 68 | virtual SkISize onISize() { |
reed@google.com | a4f8137 | 2012-11-15 15:56:38 +0000 | [diff] [blame] | 69 | return SkISize::Make(640, 760); |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 70 | } |
| 71 | |
reed@google.com | 86eca47 | 2012-11-15 17:24:23 +0000 | [diff] [blame^] | 72 | void drawContent(SkCanvas* canvas) { |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 73 | canvas->translate(SkIntToScalar(20), SkIntToScalar(20)); |
| 74 | |
| 75 | SkPaint paint; |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 76 | paint.setColor(0x80FF0000); |
| 77 | |
| 78 | const Proc procs[] = { |
| 79 | draw_hair, draw_thick, draw_rect, draw_oval, draw_text |
| 80 | }; |
| 81 | |
| 82 | const SkXfermode::Mode modes[] = { |
| 83 | SkXfermode::kSrcOver_Mode, SkXfermode::kSrc_Mode, SkXfermode::kClear_Mode |
| 84 | }; |
| 85 | |
reed@google.com | a4f8137 | 2012-11-15 15:56:38 +0000 | [diff] [blame] | 86 | const PaintProc paintProcs[] = { |
| 87 | identity_paintproc, gradient_paintproc |
| 88 | }; |
| 89 | |
| 90 | for (int aa = 0; aa <= 1; ++aa) { |
| 91 | paint.setAntiAlias(SkToBool(aa)); |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 92 | canvas->save(); |
reed@google.com | a4f8137 | 2012-11-15 15:56:38 +0000 | [diff] [blame] | 93 | for (size_t i = 0; i < SK_ARRAY_COUNT(paintProcs); ++i) { |
| 94 | paintProcs[i](&paint); |
| 95 | for (size_t x = 0; x < SK_ARRAY_COUNT(modes); ++x) { |
| 96 | paint.setXfermodeMode(modes[x]); |
| 97 | canvas->save(); |
| 98 | for (size_t y = 0; y < SK_ARRAY_COUNT(procs); ++y) { |
| 99 | procs[y](canvas, paint); |
| 100 | canvas->translate(0, H * 5 / 4); |
| 101 | } |
| 102 | canvas->restore(); |
| 103 | canvas->translate(W * 5 / 4, 0); |
| 104 | } |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 105 | } |
| 106 | canvas->restore(); |
reed@google.com | a4f8137 | 2012-11-15 15:56:38 +0000 | [diff] [blame] | 107 | canvas->translate(0, (H * 5 / 4) * SK_ARRAY_COUNT(procs)); |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 108 | } |
| 109 | } |
| 110 | |
reed@google.com | 86eca47 | 2012-11-15 17:24:23 +0000 | [diff] [blame^] | 111 | static SkSurface* compat_surface(SkCanvas* canvas, const SkISize& size) { |
| 112 | SkImage::Info info = { |
| 113 | size.width(), |
| 114 | size.height(), |
| 115 | SkImage::kPMColor_ColorType, |
| 116 | SkImage::kPremul_AlphaType |
| 117 | }; |
| 118 | return SkSurface::NewRaster(info); |
| 119 | } |
| 120 | |
| 121 | virtual void onDraw(SkCanvas* canvas) { |
| 122 | SkAutoTUnref<SkSurface> surf(compat_surface(canvas, this->getISize())); |
| 123 | surf->getCanvas()->drawColor(SK_ColorWHITE); |
| 124 | this->drawContent(surf->getCanvas()); |
| 125 | surf->draw(canvas, 0, 0, NULL); |
| 126 | |
| 127 | } |
| 128 | |
reed@google.com | 5dd85a4 | 2012-11-15 13:46:47 +0000 | [diff] [blame] | 129 | private: |
| 130 | typedef skiagm::GM INHERITED; |
| 131 | }; |
| 132 | |
| 133 | /////////////////////////////////////////////////////////////////////////////// |
| 134 | |
| 135 | DEF_GM(return new SrcModeGM;) |
| 136 | |