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" |
| 10 | |
| 11 | #define W SkIntToScalar(100) |
| 12 | #define H SkIntToScalar(60) |
| 13 | |
| 14 | typedef void (*Proc)(SkCanvas*, const SkPaint&); |
| 15 | |
| 16 | static void draw_hair(SkCanvas* canvas, const SkPaint& paint) { |
| 17 | SkPaint p(paint); |
| 18 | p.setStrokeWidth(0); |
| 19 | canvas->drawLine(0, 0, W, H, p); |
| 20 | } |
| 21 | |
| 22 | static void draw_thick(SkCanvas* canvas, const SkPaint& paint) { |
| 23 | SkPaint p(paint); |
| 24 | p.setStrokeWidth(H/5); |
| 25 | canvas->drawLine(0, 0, W, H, p); |
| 26 | } |
| 27 | |
| 28 | static void draw_rect(SkCanvas* canvas, const SkPaint& paint) { |
| 29 | canvas->drawRect(SkRect::MakeWH(W, H), paint); |
| 30 | } |
| 31 | |
| 32 | static void draw_oval(SkCanvas* canvas, const SkPaint& paint) { |
| 33 | canvas->drawOval(SkRect::MakeWH(W, H), paint); |
| 34 | } |
| 35 | |
| 36 | static void draw_text(SkCanvas* canvas, const SkPaint& paint) { |
| 37 | SkPaint p(paint); |
| 38 | p.setTextSize(H/4); |
| 39 | canvas->drawText("Hamburgefons", 12, 0, H*2/3, p); |
| 40 | } |
| 41 | |
| 42 | class SrcModeGM : public skiagm::GM { |
| 43 | SkPath fPath; |
| 44 | public: |
| 45 | SrcModeGM() { |
| 46 | this->setBGColor(0xFFDDDDDD); |
| 47 | } |
| 48 | |
| 49 | protected: |
| 50 | virtual SkString onShortName() { |
| 51 | return SkString("srcmode"); |
| 52 | } |
| 53 | |
| 54 | virtual SkISize onISize() { |
| 55 | return SkISize::Make(640, 480); |
| 56 | } |
| 57 | |
| 58 | virtual void onDraw(SkCanvas* canvas) { |
| 59 | canvas->translate(SkIntToScalar(20), SkIntToScalar(20)); |
| 60 | |
| 61 | SkPaint paint; |
| 62 | paint.setAntiAlias(true); |
| 63 | paint.setColor(0x80FF0000); |
| 64 | |
| 65 | const Proc procs[] = { |
| 66 | draw_hair, draw_thick, draw_rect, draw_oval, draw_text |
| 67 | }; |
| 68 | |
| 69 | const SkXfermode::Mode modes[] = { |
| 70 | SkXfermode::kSrcOver_Mode, SkXfermode::kSrc_Mode, SkXfermode::kClear_Mode |
| 71 | }; |
| 72 | |
| 73 | for (size_t x = 0; x < SK_ARRAY_COUNT(modes); ++x) { |
| 74 | paint.setXfermodeMode(modes[x]); |
| 75 | canvas->save(); |
| 76 | for (size_t y = 0; y < SK_ARRAY_COUNT(procs); ++y) { |
| 77 | procs[y](canvas, paint); |
| 78 | canvas->translate(0, H * 5 / 4); |
| 79 | } |
| 80 | canvas->restore(); |
| 81 | canvas->translate(W * 5 / 4, 0); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | private: |
| 86 | typedef skiagm::GM INHERITED; |
| 87 | }; |
| 88 | |
| 89 | /////////////////////////////////////////////////////////////////////////////// |
| 90 | |
| 91 | DEF_GM(return new SrcModeGM;) |
| 92 | |