skiagm::DistantClipGM Class Reference

Inheritance diagram for skiagm::DistantClipGM:

Private Member Functions
SkString	getName () const override
SkISize	getISize () override
void	onDraw (SkCanvas *canvas) override

Additional Inherited Members
Public Types inherited from skiagm::GM
enum	Mode { kGM_Mode , kSample_Mode , kBench_Mode }
using	DrawResult = skiagm::DrawResult
using	GraphiteTestContext = skiatest::graphite::GraphiteTestContext
Public Member Functions inherited from skiagm::GM
	GM (SkColor backgroundColor=SK_ColorWHITE)
virtual	~GM ()
void	setMode (Mode mode)
Mode	getMode () const
DrawResult	gpuSetup (SkCanvas *, SkString *errorMsg, GraphiteTestContext *=nullptr)
void	gpuTeardown ()
void	onceBeforeDraw ()
DrawResult	draw (SkCanvas *canvas)
DrawResult	draw (SkCanvas *, SkString *errorMsg)
void	drawBackground (SkCanvas *)
DrawResult	drawContent (SkCanvas *canvas)
DrawResult	drawContent (SkCanvas *, SkString *errorMsg)
virtual bool	runAsBench () const
SkScalar	width ()
SkScalar	height ()
SkColor	getBGColor () const
void	setBGColor (SkColor)
void	drawSizeBounds (SkCanvas *, SkColor)
bool	animate (double)
virtual bool	onChar (SkUnichar)
bool	getControls (SkMetaData *controls)
void	setControls (const SkMetaData &controls)
virtual void	modifyGrContextOptions (GrContextOptions *)
virtual void	modifyGraphiteContextOptions (skgpu::graphite::ContextOptions *) const
virtual bool	isBazelOnly () const
virtual std::map< std::string, std::string >	getGoldKeys () const
Static Public Attributes inherited from skiagm::GM
static constexpr char	kErrorMsg_DrawSkippedGpuOnly []
Protected Member Functions inherited from skiagm::GM
virtual DrawResult	onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
virtual void	onGpuTeardown ()
virtual void	onOnceBeforeDraw ()
virtual DrawResult	onDraw (SkCanvas *, SkString *errorMsg)
virtual bool	onAnimate (double)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
GraphiteTestContext *	graphiteTestContext () const

Detailed Description

Definition at line 23 of file distantclip.cpp.

Member Function Documentation

getISize()

SkISize skiagm::DistantClipGM::getISize ( )

inlineoverrideprivatevirtual

Implements skiagm::GM.

Definition at line 26 of file distantclip.cpp.

{ return {100, 100}; }

getName()

SkString skiagm::DistantClipGM::getName ( ) const

inlineoverrideprivatevirtual

Implements skiagm::GM.

Definition at line 24 of file distantclip.cpp.

{ return SkString("distantclip"); }

onDraw()

void skiagm::DistantClipGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprivatevirtual

Reimplemented from skiagm::GM.

Definition at line 28 of file distantclip.cpp.

                                           {
        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.
    }

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The documentation for this class was generated from the following file:

• third_party/skia/gm/distantclip.cpp