SkRegion::Cliperator Class Reference

#include <SkRegion.h>

Public Member Functions
	Cliperator (const SkRegion &region, const SkIRect &clip)
bool	done ()
void	next ()
const SkIRect &	rect () const

Detailed Description

Returns the sequence of rectangles, sorted along y-axis, then x-axis, that make up SkRegion intersected with the specified clip rectangle.

Definition at line 520 of file SkRegion.h.

Constructor & Destructor Documentation

Cliperator()

SkRegion::Cliperator::Cliperator	(	const SkRegion &	region,
		const SkIRect &	clip
	)

Sets SkRegion::Cliperator to return elements of SkIRect array in SkRegion within clip.

Parameters

region	SkRegion to iterate
clip	bounds of iteration

Returns

SkRegion iterator

example: https://fiddle.skia.org/c/@Region_Cliperator_const_SkRegion_const_SkIRect

Definition at line 1427 of file SkRegion.cpp.

        : fIter(rgn), fClip(clip), fDone(true) {
    const SkIRect& r = fIter.rect();
 
    while (!fIter.done()) {
        if (r.fTop >= clip.fBottom) {
            break;
        }
        if (fRect.intersect(clip, r)) {
            fDone = false;
            break;
        }
        fIter.next();
    }
}

Member Function Documentation

done()

bool SkRegion::Cliperator::done ( )

inline

Returns true if SkRegion::Cliperator is pointing to final SkIRect in SkRegion.

Returns

true if data parsing is complete

Definition at line 537 of file SkRegion.h.

{ return fDone; }

next()

void SkRegion::Cliperator::next

(

)

Advances iterator to next SkIRect in SkRegion contained by clip.

example: https://fiddle.skia.org/c/@Region_Cliperator_next

Definition at line 1443 of file SkRegion.cpp.

                              {
    if (fDone) {
        return;
    }
 
    const SkIRect& r = fIter.rect();
 
    fDone = true;
    fIter.next();
    while (!fIter.done()) {
        if (r.fTop >= fClip.fBottom) {
            break;
        }
        if (fRect.intersect(fClip, r)) {
            fDone = false;
            break;
        }
        fIter.next();
    }
}

rect()

const SkIRect & SkRegion::Cliperator::rect ( ) const

inline

Returns SkIRect element in SkRegion, intersected with clip passed to SkRegion::Cliperator constructor. Does not return predictable results if SkRegion is empty.

Returns

part of SkRegion inside clip as SkIRect

Definition at line 551 of file SkRegion.h.

{ return fRect; }

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

• third_party/skia/include/core/SkRegion.h
• third_party/skia/src/core/SkRegion.cpp