#include <dl_op_spy.h>

Inheritance diagram for flutter::DlOpSpy:

Public Member Functions
bool	did_draw ()
	Returns true if any non transparent content has been drawn.

Public Member Functions inherited from flutter::DlOpReceiver
virtual bool	PrefersImpellerPaths () const

virtual void	clipPath (const CacheablePath &cache, ClipOp clip_op, bool is_aa)

virtual void	drawPath (const CacheablePath &cache)

virtual void	drawShadow (const CacheablePath &cache, const DlColor color, const SkScalar elevation, bool transparent_occluder, SkScalar dpr)

virtual void	save (uint32_t total_content_depth)

virtual void	saveLayer (const SkRect &bounds, const SaveLayerOptions &options, uint32_t total_content_depth, const DlImageFilter *backdrop=nullptr)

virtual void	saveLayer (const SkRect bounds, const SaveLayerOptions options, const DlImageFilter backdrop=nullptr) final

Private Member Functions
void	setColor (DlColor color) override

void	setColorSource (const DlColorSource *source) override

void	save () override

void	saveLayer (const SkRect &bounds, const SaveLayerOptions options, const DlImageFilter *backdrop) override

void	restore () override

void	drawColor (DlColor color, DlBlendMode mode) override

void	drawPaint () override

void	drawLine (const SkPoint &p0, const SkPoint &p1) override

void	drawRect (const SkRect &rect) override

void	drawOval (const SkRect &bounds) override

void	drawCircle (const SkPoint &center, SkScalar radius) override

void	drawRRect (const SkRRect &rrect) override

void	drawDRRect (const SkRRect &outer, const SkRRect &inner) override

void	drawPath (const SkPath &path) override

void	drawArc (const SkRect &oval_bounds, SkScalar start_degrees, SkScalar sweep_degrees, bool use_center) override

void	drawPoints (PointMode mode, uint32_t count, const SkPoint points[]) override

void	drawVertices (const DlVertices *vertices, DlBlendMode mode) override

void	drawImage (const sk_sp< DlImage > image, const SkPoint point, DlImageSampling sampling, bool render_with_attributes) override

void	drawImageRect (const sk_sp< DlImage > image, const SkRect &src, const SkRect &dst, DlImageSampling sampling, bool render_with_attributes, SrcRectConstraint constraint=SrcRectConstraint::kFast) override

void	drawImageNine (const sk_sp< DlImage > image, const SkIRect &center, const SkRect &dst, DlFilterMode filter, bool render_with_attributes) override

void	drawAtlas (const sk_sp< DlImage > atlas, const SkRSXform xform[], const SkRect tex[], const DlColor colors[], int count, DlBlendMode mode, DlImageSampling sampling, const SkRect *cull_rect, bool render_with_attributes) override

void	drawDisplayList (const sk_sp< DisplayList > display_list, SkScalar opacity=SK_Scalar1) override

void	drawTextBlob (const sk_sp< SkTextBlob > blob, SkScalar x, SkScalar y) override

void	drawTextFrame (const std::shared_ptr< impeller::TextFrame > &text_frame, SkScalar x, SkScalar y) override

void	drawShadow (const SkPath &path, const DlColor color, const SkScalar elevation, bool transparent_occluder, SkScalar dpr) override

Additional Inherited Members
Static Public Attributes inherited from flutter::DlOpReceiver
static constexpr int	kMaxDrawPointsCount = ((1 << 29) - 1)

Protected Types inherited from flutter::DlOpReceiver
using	ClipOp = DlCanvas::ClipOp

using	PointMode = DlCanvas::PointMode

using	SrcRectConstraint = DlCanvas::SrcRectConstraint

Detailed Description

Receives to drawing commands of a DisplayListBuilder.

This is used to determine whether any non-transparent pixels will be drawn on the canvas. All the drawImage operations are considered drawing non-transparent pixels.

To use this class, dispatch the operations from DisplayList to a concrete DlOpSpy object, and check the result of did_draw method.

DlOpSpy dl_op_spy;
display_list.Dispatch(dl_op_spy);
bool did_draw = dl_op_spy.did_draw()

Definition at line 29 of file dl_op_spy.h.

Member Function Documentation

◆ did_draw()

bool flutter::DlOpSpy::did_draw ( )

Returns true if any non transparent content has been drawn.

Definition at line 9 of file dl_op_spy.cc.

                       {
  return did_draw_;
}

◆ drawArc()

void flutter::DlOpSpy::drawArc	(	const SkRect &	oval_bounds,
		SkScalar	start_degrees,
		SkScalar	sweep_degrees,
		bool	use_center
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 65 of file dl_op_spy.cc.

                                       {
  did_draw_ |= will_draw_;
}

◆ drawAtlas()

void flutter::DlOpSpy::drawAtlas	(	const sk_sp< DlImage >	atlas,
		const SkRSXform	xform[],
		const SkRect	tex[],
		const DlColor	colors[],
		int	count,
		DlBlendMode	mode,
		DlImageSampling	sampling,
		const SkRect *	cull_rect,
		bool	render_with_attributes
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 105 of file dl_op_spy.cc.

                                                     {
  did_draw_ = true;
}

◆ drawCircle()

void flutter::DlOpSpy::drawCircle	(	const SkPoint &	center,
		SkScalar	radius
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 53 of file dl_op_spy.cc.

                                                               {
  did_draw_ |= will_draw_;
}

◆ drawColor()

void flutter::DlOpSpy::drawColor	(	DlColor	color,
		DlBlendMode	mode
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 36 of file dl_op_spy.cc.

                                                       {
  did_draw_ |= !color.isTransparent();
}

◆ drawDisplayList()

void flutter::DlOpSpy::drawDisplayList	(	const sk_sp< DisplayList >	display_list,
		SkScalar	opacity = `SK_Scalar1`
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 116 of file dl_op_spy.cc.

                                                {
  if (did_draw_ || opacity == 0) {
    return;
  }
  DlOpSpy receiver;
  display_list->Dispatch(receiver);
  did_draw_ |= receiver.did_draw();
}

◆ drawDRRect()

void flutter::DlOpSpy::drawDRRect	(	const SkRRect &	outer,
		const SkRRect &	inner
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 59 of file dl_op_spy.cc.

                                                                   {
  did_draw_ |= will_draw_;
}

◆ drawImage()

void flutter::DlOpSpy::drawImage	(	const sk_sp< DlImage >	image,
		const SkPoint	point,
		DlImageSampling	sampling,
		bool	render_with_attributes
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 84 of file dl_op_spy.cc.

                                                     {
  did_draw_ = true;
}

◆ drawImageNine()

void flutter::DlOpSpy::drawImageNine	(	const sk_sp< DlImage >	image,
		const SkIRect &	center,
		const SkRect &	dst,
		DlFilterMode	filter,
		bool	render_with_attributes
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 98 of file dl_op_spy.cc.

                                                         {
  did_draw_ = true;
}

◆ drawImageRect()

void flutter::DlOpSpy::drawImageRect	(	const sk_sp< DlImage >	image,
		const SkRect &	src,
		const SkRect &	dst,
		DlImageSampling	sampling,
		bool	render_with_attributes,
		SrcRectConstraint	constraint = `SrcRectConstraint::kFast`
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 90 of file dl_op_spy.cc.

                                                          {
  did_draw_ = true;
}

◆ drawLine()

void flutter::DlOpSpy::drawLine	(	const SkPoint &	p0,
		const SkPoint &	p1
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 44 of file dl_op_spy.cc.

                                                           {
  did_draw_ |= will_draw_;
}

◆ drawOval()

void flutter::DlOpSpy::drawOval ( const SkRect & bounds )

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 50 of file dl_op_spy.cc.

                                           {
  did_draw_ |= will_draw_;
}

◆ drawPaint()

void flutter::DlOpSpy::drawPaint ( )

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 39 of file dl_op_spy.cc.

                        {
  did_draw_ |= will_draw_;
}

◆ drawPath()

void flutter::DlOpSpy::drawPath ( const SkPath & path )

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 62 of file dl_op_spy.cc.

                                         {
  did_draw_ |= will_draw_;
}

◆ drawPoints()

void flutter::DlOpSpy::drawPoints	(	PointMode	mode,
		uint32_t	count,
		const SkPoint	points[]
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 71 of file dl_op_spy.cc.

                                                 {
  did_draw_ |= will_draw_;
}

◆ drawRect()

void flutter::DlOpSpy::drawRect ( const SkRect & rect )

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 47 of file dl_op_spy.cc.

                                         {
  did_draw_ |= will_draw_;
}

◆ drawRRect()

void flutter::DlOpSpy::drawRRect ( const SkRRect & rrect )

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 56 of file dl_op_spy.cc.

                                            {
  did_draw_ |= will_draw_;
}

◆ drawShadow()

void flutter::DlOpSpy::drawShadow	(	const SkPath &	path,
		const DlColor	color,
		const SkScalar	elevation,
		bool	transparent_occluder,
		SkScalar	dpr
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 138 of file dl_op_spy.cc.

                                       {
  did_draw_ |= !color.isTransparent();
}

◆ drawTextBlob()

void flutter::DlOpSpy::drawTextBlob	(	const sk_sp< SkTextBlob >	blob,
		SkScalar	x,
		SkScalar	y
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 125 of file dl_op_spy.cc.

                                       {
  did_draw_ |= will_draw_;
}

◆ drawTextFrame()

void flutter::DlOpSpy::drawTextFrame	(	const std::shared_ptr< impeller::TextFrame > &	text_frame,
		SkScalar	x,
		SkScalar	y
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 131 of file dl_op_spy.cc.

                {
  did_draw_ |= will_draw_;
}

◆ drawVertices()

void flutter::DlOpSpy::drawVertices	(	const DlVertices *	vertices,
		DlBlendMode	mode
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 76 of file dl_op_spy.cc.

                                                                       {
  did_draw_ |= will_draw_;
}

◆ restore()

void flutter::DlOpSpy::restore ( )

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 35 of file dl_op_spy.cc.

35{}

◆ save()

void flutter::DlOpSpy::save ( )

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 31 of file dl_op_spy.cc.

31{}

◆ saveLayer()

void flutter::DlOpSpy::saveLayer	(	const SkRect &	bounds,
		const SaveLayerOptions	options,
		const DlImageFilter *	backdrop
	)

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 32 of file dl_op_spy.cc.

34 {}

◆ setColor()

void flutter::DlOpSpy::setColor ( DlColor color )

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 13 of file dl_op_spy.cc.

                                    {
  if (color.isTransparent()) {
    will_draw_ = false;
  } else {
    will_draw_ = true;
  }
}

◆ setColorSource()

void flutter::DlOpSpy::setColorSource ( const DlColorSource * source )

overrideprivatevirtual

Implements flutter::DlOpReceiver.

Definition at line 20 of file dl_op_spy.cc.

                                                        {
  if (!source) {
    return;
  }
  const DlColorColorSource* color_source = source->asColor();
  if (color_source && color_source->color().isTransparent()) {
    will_draw_ = false;
    return;
  }
  will_draw_ = true;
}

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

shell/common/dl_op_spy.h
shell/common/dl_op_spy.cc

Public Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ did_draw()

◆ drawArc()

◆ drawAtlas()

◆ drawCircle()

◆ drawColor()

◆ drawDisplayList()

◆ drawDRRect()

◆ drawImage()

◆ drawImageNine()

◆ drawImageRect()

◆ drawLine()

◆ drawOval()

◆ drawPaint()

◆ drawPath()

◆ drawPoints()

◆ drawRect()

◆ drawRRect()

◆ drawShadow()

◆ drawTextBlob()

◆ drawTextFrame()

◆ drawVertices()

◆ restore()

◆ save()

◆ saveLayer()

◆ setColor()

◆ setColorSource()