| |
| /* |
| * 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/gm.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkPath.h" |
| #include "include/core/SkPicture.h" |
| #include "include/core/SkPictureRecorder.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| |
| namespace skiagm { |
| |
| class DistantClipGM : public GM { |
| SkString getName() const override { return SkString("distantclip"); } |
| |
| SkISize getISize() override { return {100, 100}; } |
| |
| void onDraw(SkCanvas* canvas) override { |
| constexpr SkScalar kOffset = 35000.0f; |
| constexpr SkScalar kExtents = 1000.0f; |
| |
| SkPictureRecorder recorder; |
| // We record a picture of huge vertical extents in which we clear the canvas to red, create |
| // a 'extents' by 'extents' round rect clip at a vertical offset of 'offset', then draw |
| // green into that. |
| SkCanvas* rec = recorder.beginRecording(kExtents, kOffset + kExtents); |
| rec->drawColor(SK_ColorRED); |
| rec->save(); |
| SkRect r = SkRect::MakeXYWH(-kExtents, kOffset - kExtents, 2 * kExtents, 2 * kExtents); |
| rec->clipPath(SkPath::RRect(r, 5, 5), true); |
| rec->drawColor(SK_ColorGREEN); |
| rec->restore(); |
| sk_sp<SkPicture> pict(recorder.finishRecordingAsPicture()); |
| |
| // Next we play that picture into another picture of the same size. |
| pict->playback(recorder.beginRecording(pict->cullRect().width(), |
| pict->cullRect().height())); |
| sk_sp<SkPicture> pict2(recorder.finishRecordingAsPicture()); |
| |
| // Finally we play the part of that second picture that should be green into the canvas. |
| canvas->save(); |
| canvas->translate(kExtents / 2, -(kOffset - kExtents / 2)); |
| pict2->playback(canvas); |
| canvas->restore(); |
| |
| // If the image is red, we erroneously decided the clipPath was empty and didn't record |
| // the green drawColor, if it's green we're all good. |
| } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM( return new DistantClipGM; ) |
| |
| } // namespace skiagm |