diff options
| -rw-r--r-- | gm/xfermodes2.cpp | 160 | ||||
| -rw-r--r-- | gyp/gmslides.gypi | 1 |
2 files changed, 161 insertions, 0 deletions
diff --git a/gm/xfermodes2.cpp b/gm/xfermodes2.cpp new file mode 100644 index 0000000000..1ed6cd4867 --- /dev/null +++ b/gm/xfermodes2.cpp @@ -0,0 +1,160 @@ + +/* + * Copyright 2013 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 "SkBitmap.h" +#include "SkShader.h" +#include "SkXfermode.h" +#include "SkColorPriv.h" + +namespace skiagm { + +class Xfermodes2GM : public GM { +public: + Xfermodes2GM() {} + +protected: + virtual SkString onShortName() SK_OVERRIDE { + return SkString("xfermodes2"); + } + + virtual SkISize onISize() SK_OVERRIDE { + return make_isize(455, 475); + } + + virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { + canvas->translate(SkIntToScalar(10), SkIntToScalar(20)); + + const SkScalar w = SkIntToScalar(kSize); + const SkScalar h = SkIntToScalar(kSize); + + SkPaint labelP; + labelP.setAntiAlias(true); + labelP.setTextAlign(SkPaint::kCenter_Align); + + const int W = 6; + + SkScalar x = 0, y = 0; + for (size_t m = 0; m <= SkXfermode::kLastMode; m++) { + SkXfermode::Mode mode = static_cast<SkXfermode::Mode>(m); + SkXfermode* xm = SkXfermode::Create(mode); + SkAutoUnref aur(xm); + + canvas->save(); + + canvas->translate(x, y); + SkPaint p; + p.setAntiAlias(false); + p.setStyle(SkPaint::kFill_Style); + p.setShader(fBG); + SkRect r = SkRect::MakeWH(w, h); + canvas->drawRect(r, p); + + canvas->saveLayer(&r, NULL, SkCanvas::kARGB_ClipLayer_SaveFlag); + + p.setShader(fDst); + canvas->drawRect(r, p); + p.setShader(fSrc); + p.setXfermode(xm); + canvas->drawRect(r, p); + + canvas->restore(); + + r.inset(-SK_ScalarHalf, -SK_ScalarHalf); + p.setStyle(SkPaint::kStroke_Style); + p.setShader(NULL); + p.setXfermode(NULL); + canvas->drawRect(r, p); + + canvas->restore(); + +#if 1 + canvas->drawText(SkXfermode::ModeName(mode), strlen(SkXfermode::ModeName(mode)), + x + w/2, y - labelP.getTextSize()/2, labelP); +#endif + x += w + SkIntToScalar(10); + if ((m % W) == W - 1) { + x = 0; + y += h + SkIntToScalar(30); + } + } + } + +private: + virtual void onOnceBeforeDraw() SK_OVERRIDE { + const uint32_t kCheckData[] = { + SkPackARGB32(0xFF, 0x40, 0x40, 0x40), + SkPackARGB32(0xFF, 0xD0, 0xD0, 0xD0), + SkPackARGB32(0xFF, 0xD0, 0xD0, 0xD0), + SkPackARGB32(0xFF, 0x40, 0x40, 0x40) + }; + SkBitmap bg; + bg.setConfig(SkBitmap::kARGB_8888_Config, 2, 2); + bg.allocPixels(); + SkAutoLockPixels bgAlp(bg); + memcpy(bg.getPixels(), kCheckData, sizeof(kCheckData)); + bg.setIsOpaque(true); + + fBG.reset(SkShader::CreateBitmapShader(bg, + SkShader::kRepeat_TileMode, + SkShader::kRepeat_TileMode)); + SkMatrix lm; + lm.setScale(SkIntToScalar(16), SkIntToScalar(16)); + fBG->setLocalMatrix(lm); + + SkBitmap dstBmp; + dstBmp.setConfig(SkBitmap::kARGB_8888_Config, kSize, kSize); + dstBmp.allocPixels(); + SkAutoLockPixels dstAlp(dstBmp); + SkPMColor* pixels = reinterpret_cast<SkPMColor*>(dstBmp.getPixels()); + + for (int y = 0; y < kSize; ++y) { + int c = y * (1 << kShift); + SkPMColor rowColor = SkPackARGB32(c, c, 0, c/2); + for (int x = 0; x < kSize; ++x) { + pixels[kSize * y + x] = rowColor; + } + } + fSrc.reset(SkShader::CreateBitmapShader(dstBmp, + SkShader::kClamp_TileMode, + SkShader::kClamp_TileMode)); + SkBitmap srcBmp; + srcBmp.setConfig(SkBitmap::kARGB_8888_Config, kSize, kSize); + srcBmp.allocPixels(); + SkAutoLockPixels srcAlp(srcBmp); + pixels = reinterpret_cast<SkPMColor*>(srcBmp.getPixels()); + + for (int x = 0; x < kSize; ++x) { + int c = x * (1 << kShift); + SkPMColor colColor = SkPackARGB32(c, 0, c, c/2); + for (int y = 0; y < kSize; ++y) { + pixels[kSize * y + x] = colColor; + } + } + fDst.reset(SkShader::CreateBitmapShader(srcBmp, + SkShader::kClamp_TileMode, + SkShader::kClamp_TileMode)); + } + + enum { + kShift = 2, + kSize = 256 >> kShift, + }; + + SkAutoTUnref<SkShader> fBG; + SkAutoTUnref<SkShader> fSrc; + SkAutoTUnref<SkShader> fDst; + + typedef GM INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +static GM* MyFactory(void*) { return new Xfermodes2GM; } +static GMRegistry reg(MyFactory); + +} diff --git a/gyp/gmslides.gypi b/gyp/gmslides.gypi index 09e73b7082..579c7ea5b3 100644 --- a/gyp/gmslides.gypi +++ b/gyp/gmslides.gypi @@ -100,6 +100,7 @@ '../gm/verttext2.cpp', '../gm/verylargebitmap.cpp', '../gm/xfermodes.cpp', + '../gm/xfermodes2.cpp', ], } |