| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| #include "SkCanvas.h" |
| |
| #define W SkIntToScalar(100) |
| #define H SkIntToScalar(60) |
| |
| typedef void (*Proc)(SkCanvas*, const SkPaint&); |
| |
| static void draw_hair(SkCanvas* canvas, const SkPaint& paint) { |
| SkPaint p(paint); |
| p.setStrokeWidth(0); |
| canvas->drawLine(0, 0, W, H, p); |
| } |
| |
| static void draw_thick(SkCanvas* canvas, const SkPaint& paint) { |
| SkPaint p(paint); |
| p.setStrokeWidth(H/5); |
| canvas->drawLine(0, 0, W, H, p); |
| } |
| |
| static void draw_rect(SkCanvas* canvas, const SkPaint& paint) { |
| canvas->drawRect(SkRect::MakeWH(W, H), paint); |
| } |
| |
| static void draw_oval(SkCanvas* canvas, const SkPaint& paint) { |
| canvas->drawOval(SkRect::MakeWH(W, H), paint); |
| } |
| |
| static void draw_text(SkCanvas* canvas, const SkPaint& paint) { |
| SkPaint p(paint); |
| p.setTextSize(H/4); |
| canvas->drawText("Hamburgefons", 12, 0, H*2/3, p); |
| } |
| |
| class SrcModeGM : public skiagm::GM { |
| SkPath fPath; |
| public: |
| SrcModeGM() { |
| this->setBGColor(0xFFDDDDDD); |
| } |
| |
| protected: |
| virtual SkString onShortName() { |
| return SkString("srcmode"); |
| } |
| |
| virtual SkISize onISize() { |
| return SkISize::Make(640, 480); |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| canvas->translate(SkIntToScalar(20), SkIntToScalar(20)); |
| |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setColor(0x80FF0000); |
| |
| const Proc procs[] = { |
| draw_hair, draw_thick, draw_rect, draw_oval, draw_text |
| }; |
| |
| const SkXfermode::Mode modes[] = { |
| SkXfermode::kSrcOver_Mode, SkXfermode::kSrc_Mode, SkXfermode::kClear_Mode |
| }; |
| |
| for (size_t x = 0; x < SK_ARRAY_COUNT(modes); ++x) { |
| paint.setXfermodeMode(modes[x]); |
| canvas->save(); |
| for (size_t y = 0; y < SK_ARRAY_COUNT(procs); ++y) { |
| procs[y](canvas, paint); |
| canvas->translate(0, H * 5 / 4); |
| } |
| canvas->restore(); |
| canvas->translate(W * 5 / 4, 0); |
| } |
| } |
| |
| private: |
| typedef skiagm::GM INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new SrcModeGM;) |
| |