blob: 24fbacaf4d55639d2a6bfa113b98fe77af7d39a6 [file] [log] [blame]
rileya@google.comffadfb52012-09-14 13:53:36 +00001
rileya@google.comffadfb52012-09-14 13:53:36 +00002/*
3 * Copyright 2012 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9#include "gm.h"
10#include "SkCanvas.h"
11#include "SkPicture.h"
robertphillips@google.com770963f2014-04-18 18:04:41 +000012#include "SkPictureRecorder.h"
rileya@google.comffadfb52012-09-14 13:53:36 +000013
14namespace skiagm {
15
16class DistantClipGM : public GM {
17public:
18 DistantClipGM() { }
19
20protected:
21
22 SkString onShortName() {
23 return SkString("distantclip");
24 }
25
tfarinaf5393182014-06-09 23:59:03 -070026 SkISize onISize() { return SkISize::Make(100, 100); }
rileya@google.comffadfb52012-09-14 13:53:36 +000027
28 virtual void onDraw(SkCanvas* canvas) {
mtkleindbfd7ab2016-09-01 11:24:54 -070029 constexpr SkScalar kOffset = 35000.0f;
30 constexpr SkScalar kExtents = 1000.0f;
rileya@google.comffadfb52012-09-14 13:53:36 +000031
robertphillips@google.com84b18c72014-04-13 19:09:42 +000032 SkPictureRecorder recorder;
rileya@google.comffadfb52012-09-14 13:53:36 +000033 // We record a picture of huge vertical extents in which we clear the canvas to red, create
34 // a 'extents' by 'extents' round rect clip at a vertical offset of 'offset', then draw
35 // green into that.
halcanary96fcdcc2015-08-27 07:41:13 -070036 SkCanvas* rec = recorder.beginRecording(kExtents, kOffset + kExtents, nullptr, 0);
robertphillipsa8d7f0b2014-08-29 08:03:56 -070037 rec->drawColor(SK_ColorRED);
rileya@google.comffadfb52012-09-14 13:53:36 +000038 rec->save();
robertphillipsa8d7f0b2014-08-29 08:03:56 -070039 SkRect r = SkRect::MakeXYWH(-kExtents, kOffset - kExtents, 2 * kExtents, 2 * kExtents);
rileya@google.comffadfb52012-09-14 13:53:36 +000040 SkPath p;
41 p.addRoundRect(r, 5, 5);
reed66998382016-09-21 11:15:07 -070042 rec->clipPath(p, true);
robertphillipsa8d7f0b2014-08-29 08:03:56 -070043 rec->drawColor(SK_ColorGREEN);
rileya@google.comffadfb52012-09-14 13:53:36 +000044 rec->restore();
reedca2622b2016-03-18 07:25:55 -070045 sk_sp<SkPicture> pict(recorder.finishRecordingAsPicture());
rileya@google.comffadfb52012-09-14 13:53:36 +000046
47 // Next we play that picture into another picture of the same size.
halcanary9d524f22016-03-29 09:03:52 -070048 pict->playback(recorder.beginRecording(pict->cullRect().width(),
49 pict->cullRect().height(),
halcanary96fcdcc2015-08-27 07:41:13 -070050 nullptr, 0));
reedca2622b2016-03-18 07:25:55 -070051 sk_sp<SkPicture> pict2(recorder.finishRecordingAsPicture());
rileya@google.comffadfb52012-09-14 13:53:36 +000052
53 // Finally we play the part of that second picture that should be green into the canvas.
54 canvas->save();
robertphillipsa8d7f0b2014-08-29 08:03:56 -070055 canvas->translate(kExtents / 2, -(kOffset - kExtents / 2));
robertphillipsc5ba71d2014-09-04 08:42:50 -070056 pict2->playback(canvas);
rileya@google.comffadfb52012-09-14 13:53:36 +000057 canvas->restore();
58
59 // If the image is red, we erroneously decided the clipPath was empty and didn't record
60 // the green drawColor, if it's green we're all good.
61 }
62
63private:
64 typedef GM INHERITED;
65};
66
67///////////////////////////////////////////////////////////////////////////////
68
69static GM* MyFactory(void*) { return new DistantClipGM; }
70static GMRegistry reg(MyFactory);
71
72}