flutter::DlOpSpy Class Reference

#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. More...
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	setAntiAlias (bool aa)=0
virtual void	setDrawStyle (DlDrawStyle style)=0
virtual void	setColor (DlColor color)=0
virtual void	setStrokeWidth (float width)=0
virtual void	setStrokeMiter (float limit)=0
virtual void	setStrokeCap (DlStrokeCap cap)=0
virtual void	setStrokeJoin (DlStrokeJoin join)=0
virtual void	setColorSource (const DlColorSource *source)=0
virtual void	setColorFilter (const DlColorFilter *filter)=0
virtual void	setInvertColors (bool invert)=0
virtual void	setBlendMode (DlBlendMode mode)=0
virtual void	setMaskFilter (const DlMaskFilter *filter)=0
virtual void	setImageFilter (const DlImageFilter *filter)=0
virtual void	save ()=0
virtual void	save (uint32_t total_content_depth)
virtual void	saveLayer (const SkRect &bounds, const SaveLayerOptions options, const DlImageFilter *backdrop=nullptr)=0
virtual void	saveLayer (const SkRect &bounds, const SaveLayerOptions &options, uint32_t total_content_depth, DlBlendMode max_content_blend_mode, const DlImageFilter *backdrop=nullptr)
virtual void	restore ()=0
virtual void	saveLayer (const SkRect *bounds, const SaveLayerOptions options, const DlImageFilter *backdrop=nullptr) final
virtual void	translate (SkScalar tx, SkScalar ty)=0
virtual void	scale (SkScalar sx, SkScalar sy)=0
virtual void	rotate (SkScalar degrees)=0
virtual void	skew (SkScalar sx, SkScalar sy)=0
virtual void	transform2DAffine (SkScalar mxx, SkScalar mxy, SkScalar mxt, SkScalar myx, SkScalar myy, SkScalar myt)=0
virtual void	transformFullPerspective (SkScalar mxx, SkScalar mxy, SkScalar mxz, SkScalar mxt, SkScalar myx, SkScalar myy, SkScalar myz, SkScalar myt, SkScalar mzx, SkScalar mzy, SkScalar mzz, SkScalar mzt, SkScalar mwx, SkScalar mwy, SkScalar mwz, SkScalar mwt)=0
virtual void	transformReset ()=0
virtual void	clipRect (const SkRect &rect, ClipOp clip_op, bool is_aa)=0
virtual void	clipRRect (const SkRRect &rrect, ClipOp clip_op, bool is_aa)=0
virtual void	clipPath (const SkPath &path, ClipOp clip_op, bool is_aa)=0
virtual void	drawColor (DlColor color, DlBlendMode mode)=0
virtual void	drawPaint ()=0
virtual void	drawLine (const SkPoint &p0, const SkPoint &p1)=0
virtual void	drawDashedLine (const DlPoint &p0, const DlPoint &p1, DlScalar on_length, DlScalar off_length)=0
virtual void	drawRect (const SkRect &rect)=0
virtual void	drawOval (const SkRect &bounds)=0
virtual void	drawCircle (const SkPoint &center, SkScalar radius)=0
virtual void	drawRRect (const SkRRect &rrect)=0
virtual void	drawDRRect (const SkRRect &outer, const SkRRect &inner)=0
virtual void	drawPath (const SkPath &path)=0
virtual void	drawArc (const SkRect &oval_bounds, SkScalar start_degrees, SkScalar sweep_degrees, bool use_center)=0
virtual void	drawPoints (PointMode mode, uint32_t count, const SkPoint points[])=0
virtual void	drawVertices (const DlVertices *vertices, DlBlendMode mode)=0
virtual void	drawImage (const sk_sp< DlImage > image, const SkPoint point, DlImageSampling sampling, bool render_with_attributes)=0
virtual void	drawImageRect (const sk_sp< DlImage > image, const SkRect &src, const SkRect &dst, DlImageSampling sampling, bool render_with_attributes, SrcRectConstraint constraint=SrcRectConstraint::kFast)=0
virtual void	drawImageNine (const sk_sp< DlImage > image, const SkIRect &center, const SkRect &dst, DlFilterMode filter, bool render_with_attributes)=0
virtual 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)=0
virtual void	drawDisplayList (const sk_sp< DisplayList > display_list, SkScalar opacity=SK_Scalar1)=0
virtual void	drawTextBlob (const sk_sp< SkTextBlob > blob, SkScalar x, SkScalar y)=0
virtual void	drawTextFrame (const std::shared_ptr< impeller::TextFrame > &text_frame, SkScalar x, SkScalar y)=0
virtual void	drawShadow (const SkPath &path, const DlColor color, const SkScalar elevation, bool transparent_occluder, SkScalar dpr)=0

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_;
}

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

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