diff options
Diffstat (limited to 'chromium/third_party/skia/gm/ovals.cpp')
-rwxr-xr-x | chromium/third_party/skia/gm/ovals.cpp | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/chromium/third_party/skia/gm/ovals.cpp b/chromium/third_party/skia/gm/ovals.cpp new file mode 100755 index 00000000000..4afabc284d1 --- /dev/null +++ b/chromium/third_party/skia/gm/ovals.cpp @@ -0,0 +1,291 @@ + +/* + * 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 "SkTArray.h" +#include "SkRandom.h" +#include "SkMatrix.h" +#include "SkBlurMaskFilter.h" +#include "SkGradientShader.h" +#include "SkBlurDrawLooper.h" +#include "SkRect.h" + +namespace skiagm { + +class OvalGM : public GM { +public: + OvalGM() { + this->setBGColor(0xFF000000); + this->makePaints(); + this->makeMatrices(); + } + +protected: + virtual uint32_t onGetFlags() const SK_OVERRIDE { + return kSkipTiled_Flag; + } + + virtual SkString onShortName() SK_OVERRIDE { + return SkString("ovals"); + } + + virtual SkISize onISize() SK_OVERRIDE { + return SkISize::Make(1200, 900); + } + + void makePaints() { + { + // no AA + SkPaint p; + fPaints.push_back(p); + } + + { + // AA + SkPaint p; + p.setAntiAlias(true); + fPaints.push_back(p); + } + + { + // AA with stroke style + SkPaint p; + p.setAntiAlias(true); + p.setStyle(SkPaint::kStroke_Style); + p.setStrokeWidth(SkIntToScalar(5)); + fPaints.push_back(p); + } + + { + // AA with stroke style, width = 0 + SkPaint p; + p.setAntiAlias(true); + p.setStyle(SkPaint::kStroke_Style); + fPaints.push_back(p); + } + + { + // AA with stroke and fill style + SkPaint p; + p.setAntiAlias(true); + p.setStyle(SkPaint::kStrokeAndFill_Style); + p.setStrokeWidth(SkIntToScalar(3)); + fPaints.push_back(p); + } + } + + void makeMatrices() { + { + SkMatrix m; + m.setIdentity(); + fMatrices.push_back(m); + } + + { + SkMatrix m; + m.setScale(SkIntToScalar(3), SkIntToScalar(2)); + fMatrices.push_back(m); + } + + { + SkMatrix m; + m.setScale(SkIntToScalar(2), SkIntToScalar(2)); + fMatrices.push_back(m); + } + + { + SkMatrix m; + m.setScale(SkIntToScalar(1), SkIntToScalar(2)); + fMatrices.push_back(m); + } + + { + SkMatrix m; + m.setScale(SkIntToScalar(4), SkIntToScalar(1)); + fMatrices.push_back(m); + } + + { + SkMatrix m; + m.setRotate(SkIntToScalar(90)); + fMatrices.push_back(m); + } + + { + SkMatrix m; + m.setSkew(SkIntToScalar(2), SkIntToScalar(3)); + fMatrices.push_back(m); + } + + { + SkMatrix m; + m.setRotate(SkIntToScalar(60)); + fMatrices.push_back(m); + } + } + + SkColor genColor(SkRandom* rand) { + SkScalar hsv[3]; + hsv[0] = rand->nextRangeF(0.0f, 360.0f); + hsv[1] = rand->nextRangeF(0.75f, 1.0f); + hsv[2] = rand->nextRangeF(0.75f, 1.0f); + + return SkHSVToColor(hsv); + } + + virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { + SkRandom rand(1); + canvas->translate(20 * SK_Scalar1, 20 * SK_Scalar1); + SkRect oval = SkRect::MakeLTRB(-20, -30, 20, 30); + + const SkScalar kXStart = 60.0f; + const SkScalar kYStart = 80.0f; + const int kXStep = 150; + const int kYStep = 160; + int maxX = fMatrices.count(); + + SkPaint rectPaint; + rectPaint.setAntiAlias(true); + rectPaint.setStyle(SkPaint::kStroke_Style); + rectPaint.setStrokeWidth(SkIntToScalar(0)); + rectPaint.setColor(SK_ColorLTGRAY); + + int testCount = 0; + for (int i = 0; i < fPaints.count(); ++i) { + for (int j = 0; j < fMatrices.count(); ++j) { + canvas->save(); + SkMatrix mat = fMatrices[j]; + // position the oval, and make it at off-integer coords. + mat.postTranslate(kXStart + SK_Scalar1 * kXStep * (testCount % maxX) + + SK_Scalar1 / 4, + kYStart + SK_Scalar1 * kYStep * (testCount / maxX) + + 3 * SK_Scalar1 / 4); + canvas->concat(mat); + + SkColor color = genColor(&rand); + fPaints[i].setColor(color); + + canvas->drawRect(oval, rectPaint); + canvas->drawOval(oval, fPaints[i]); + + canvas->restore(); + + ++testCount; + } + } + + // special cases + + // non-scaled tall and skinny oval + for (int i = 0; i < fPaints.count(); ++i) { + SkRect oval = SkRect::MakeLTRB(-20, -60, 20, 60); + canvas->save(); + // position the oval, and make it at off-integer coords. + canvas->translate(kXStart + SK_Scalar1 * kXStep * 2.55f + SK_Scalar1 / 4, + kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4); + + SkColor color = genColor(&rand); + fPaints[i].setColor(color); + + canvas->drawRect(oval, rectPaint); + canvas->drawOval(oval, fPaints[i]); + canvas->restore(); + } + + // non-scaled wide and short oval + for (int i = 0; i < fPaints.count(); ++i) { + SkRect oval = SkRect::MakeLTRB(-80, -30, 80, 30); + canvas->save(); + // position the oval, and make it at off-integer coords. + canvas->translate(kXStart + SK_Scalar1 * kXStep * 4 + SK_Scalar1 / 4, + kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4 + + SK_ScalarHalf * kYStep); + + SkColor color = genColor(&rand); + fPaints[i].setColor(color); + + canvas->drawRect(oval, rectPaint); + canvas->drawOval(oval, fPaints[i]); + canvas->restore(); + } + + // super skinny oval + for (int i = 0; i < fPaints.count(); ++i) { + SkRect oval = SkRect::MakeLTRB(0, -60, 1, 60); + canvas->save(); + // position the oval, and make it at off-integer coords. + canvas->translate(kXStart + SK_Scalar1 * kXStep * 3.25f + SK_Scalar1 / 4, + kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4); + + SkColor color = genColor(&rand); + fPaints[i].setColor(color); + + canvas->drawOval(oval, fPaints[i]); + canvas->restore(); + } + + // super short oval + for (int i = 0; i < fPaints.count(); ++i) { + SkRect oval = SkRect::MakeLTRB(-80, -1, 80, 0); + canvas->save(); + // position the oval, and make it at off-integer coords. + canvas->translate(kXStart + SK_Scalar1 * kXStep * 2.5f + SK_Scalar1 / 4, + kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4 + + SK_ScalarHalf * kYStep); + + SkColor color = genColor(&rand); + fPaints[i].setColor(color); + + canvas->drawOval(oval, fPaints[i]); + canvas->restore(); + } + + // radial gradient + SkPoint center = SkPoint::Make(SkIntToScalar(0), SkIntToScalar(0)); + SkColor colors[] = { SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN }; + SkScalar pos[] = { 0, SK_ScalarHalf, SK_Scalar1 }; + SkAutoTUnref<SkShader> shader(SkGradientShader::CreateRadial(center, + SkIntToScalar(20), + colors, + pos, + SK_ARRAY_COUNT(colors), + SkShader::kClamp_TileMode)); + + for (int i = 0; i < fPaints.count(); ++i) { + canvas->save(); + // position the path, and make it at off-integer coords. + canvas->translate(kXStart + SK_Scalar1 * kXStep * 0 + SK_Scalar1 / 4, + kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4 + + SK_ScalarHalf * kYStep); + + SkColor color = genColor(&rand); + fPaints[i].setColor(color); + fPaints[i].setShader(shader); + + canvas->drawRect(oval, rectPaint); + canvas->drawOval(oval, fPaints[i]); + + fPaints[i].setShader(NULL); + + canvas->restore(); + } + } + +private: + SkTArray<SkPaint> fPaints; + SkTArray<SkMatrix> fMatrices; + + typedef GM INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +static GM* MyFactory(void*) { return new OvalGM; } +static GMRegistry reg(MyFactory); + +} |