diff options
Diffstat (limited to 'chromium/third_party/skia/samplecode/SampleAARects.cpp')
| -rw-r--r-- | chromium/third_party/skia/samplecode/SampleAARects.cpp | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/chromium/third_party/skia/samplecode/SampleAARects.cpp b/chromium/third_party/skia/samplecode/SampleAARects.cpp new file mode 100644 index 00000000000..f552df6f158 --- /dev/null +++ b/chromium/third_party/skia/samplecode/SampleAARects.cpp @@ -0,0 +1,196 @@ + +/* + * Copyright 2011 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ +#include "SampleCode.h" +#include "SkView.h" +#include "SkCanvas.h" +#include "SkDevice.h" +#include "SkPaint.h" +#include "SkShader.h" + +static SkBitmap createBitmap(int n) { + SkBitmap bitmap; + bitmap.allocN32Pixels(n, n); + bitmap.eraseColor(SK_ColorGREEN); + + SkCanvas canvas(bitmap); + SkRect r; + r.set(0, 0, SkIntToScalar(n), SkIntToScalar(n)); + SkPaint paint; + paint.setAntiAlias(true); + + paint.setColor(SK_ColorRED); + canvas.drawOval(r, paint); + paint.setColor(SK_ColorBLUE); + paint.setStrokeWidth(SkIntToScalar(n)/15); + paint.setStyle(SkPaint::kStroke_Style); + canvas.drawLine(0, 0, r.fRight, r.fBottom, paint); + canvas.drawLine(0, r.fBottom, r.fRight, 0, paint); + + return bitmap; +} + +class AARectView : public SampleView { + SkBitmap fBitmap; + enum { + N = 64 + }; +public: + AARectView() { + fBitmap = createBitmap(N); + + fWidth = N; + } + +protected: + // overrides from SkEventSink + virtual bool onQuery(SkEvent* evt) { + if (SampleCode::TitleQ(*evt)) { + SampleCode::TitleR(evt, "AA Rects"); + return true; + } + return this->INHERITED::onQuery(evt); + } + + virtual void onDrawContent(SkCanvas* canvas) { + canvas->translate(SkIntToScalar(10), SkIntToScalar(10)); + + SkPaint bluePaint; + bluePaint.setARGB(0xff, 0x0, 0x0, 0xff); + SkPaint bmpPaint; + SkShader* bmpShader = SkShader::CreateBitmapShader(fBitmap, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode); + bmpPaint.setShader(bmpShader); + bmpShader->unref(); + + bluePaint.setStrokeWidth(3); + bmpPaint.setStrokeWidth(3); + + SkPaint paints[] = { bluePaint, bmpPaint }; + + SkRect rect; + + SkScalar dx = SkIntToScalar(80); + SkScalar dy = SkIntToScalar(100); + SkMatrix matrix; + for (size_t p = 0; p < SK_ARRAY_COUNT(paints); ++p) { + for (int stroke = 0; stroke < 2; ++stroke) { + paints[p].setStyle(stroke ? SkPaint::kStroke_Style : SkPaint::kFill_Style); + for (int a = 0; a < 3; ++ a) { + paints[p].setAntiAlias(a > 0); + paints[p].setAlpha(a > 1 ? 0x80 : 0xff); + + canvas->save(); + rect = SkRect::MakeLTRB(0.f, + 0.f, + 40.f, + 40.f); + canvas->drawRect(rect, paints[p]); + canvas->translate(dx, 0); + + rect = SkRect::MakeLTRB(0.5f, + 0.5f, + 40.5f, + 40.5f); + canvas->drawRect(rect, paints[p]); + canvas->translate(dx, 0); + + rect = SkRect::MakeLTRB(0.5f, + 0.5f, + 40.f, + 40.f); + canvas->drawRect(rect, paints[p]); + canvas->translate(dx, 0); + + rect = SkRect::MakeLTRB(0.75f, + 0.75f, + 40.75f, + 40.75f); + canvas->drawRect(rect, paints[p]); + canvas->translate(dx, 0); + + canvas->save(); + canvas->translate(.33f, .67f); + rect = SkRect::MakeLTRB(0.0f, + 0.0f, + 40.0f, + 40.0f); + canvas->drawRect(rect, paints[p]); + canvas->restore(); + canvas->translate(dx, 0); + + canvas->save(); + matrix.setRotate(45.f); + canvas->concat(matrix); + canvas->translate(20.0f / sqrtf(2.f), + 20.0f / sqrtf(2.f)); + rect = SkRect::MakeLTRB(-20.0f, + -20.0f, + 20.0f, + 20.0f); + canvas->drawRect(rect, paints[p]); + canvas->restore(); + canvas->translate(dx, 0); + + canvas->save(); + canvas->rotate(90.f); + rect = SkRect::MakeLTRB(0.0f, + 0.0f, + 40.0f, + -40.0f); + canvas->drawRect(rect, paints[p]); + canvas->restore(); + canvas->translate(dx, 0); + + canvas->save(); + canvas->rotate(90.f); + rect = SkRect::MakeLTRB(0.5f, + 0.5f, + 40.5f, + -40.5f); + canvas->drawRect(rect, paints[p]); + canvas->restore(); + canvas->translate(dx, 0); + + canvas->save(); + matrix.setScale(-1.f, -1.f); + canvas->concat(matrix); + rect = SkRect::MakeLTRB(0.5f, + 0.5f, + -40.5f, + -40.5f); + canvas->drawRect(rect, paints[p]); + canvas->restore(); + canvas->translate(dx, 0); + + canvas->save(); + matrix.setScale(2.1f, 4.1f); + canvas->concat(matrix); + rect = SkRect::MakeLTRB(0.1f, + 0.1f, + 19.1f, + 9.1f); + canvas->drawRect(rect, paints[p]); + canvas->restore(); + canvas->translate(dx, 0); + + canvas->restore(); + canvas->translate(0, dy); + } + } + } + } + +private: + int fWidth; + + typedef SampleView INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +static SkView* MyFactory() { return new AARectView; } +static SkViewRegister reg(MyFactory); |