/* * 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 "include/core/SkCanvas.h" #include "include/core/SkPaint.h" #include "include/core/SkShader.h" #include "include/utils/SkRandom.h" #include "samplecode/Sample.h" /** * Animated sample used to develop a predecessor of GrDrawOp combining. */ class ManyRectsView : public Sample { private: enum { N = 1000, }; public: ManyRectsView() {} protected: SkString name() override { return SkString("ManyRects"); } void onDrawContent(SkCanvas* canvas) override { SkISize dsize = canvas->getBaseLayerSize(); canvas->clear(0xFFF0E0F0); for (int i = 0; i < N; ++i) { SkRect rect = SkRect::MakeWH(SkIntToScalar(fRandom.nextRangeU(10, 100)), SkIntToScalar(fRandom.nextRangeU(10, 100))); int x = fRandom.nextRangeU(0, dsize.fWidth); int y = fRandom.nextRangeU(0, dsize.fHeight); canvas->save(); canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); // Uncomment to test rotated rect draw combining. if (false) { SkMatrix rotate; rotate.setRotate(fRandom.nextUScalar1() * 360, SkIntToScalar(x) + SkScalarHalf(rect.fRight), SkIntToScalar(y) + SkScalarHalf(rect.fBottom)); canvas->concat(rotate); } SkRect clipRect = rect; // This clip will always contain the entire rect. It's here to give the GPU op combining // code a little more challenge. clipRect.outset(10, 10); canvas->clipRect(clipRect); SkPaint paint; paint.setColor(fRandom.nextU()); canvas->drawRect(rect, paint); canvas->restore(); } } private: SkRandom fRandom; typedef Sample INHERITED; }; ////////////////////////////////////////////////////////////////////////////// DEF_SAMPLE( return new ManyRectsView(); )