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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrSurfaceContext_DEFINED
#define GrSurfaceContext_DEFINED
#include "../private/GrSurfaceProxy.h"
#include "SkRefCnt.h"
class GrAuditTrail;
class GrContext;
class GrSingleOwner;
class GrSurface;
struct SkIPoint;
struct SkIRect;
/**
* A helper object to orchestrate commands for a particular surface
*/
class SK_API GrSurfaceContext : public SkRefCnt {
public:
~GrSurfaceContext() override {}
/*
* Copy 'src' into the proxy backing this context
* @param src src of pixels
* @param srcRect the subset of 'src' to copy
* @param dstPoint the origin of the 'srcRect' in the destination coordinate space
* @return true if the copy succeeded; false otherwise
*
* Note: Notionally, 'srcRect' is clipped to 'src's extent with 'dstPoint' being adjusted.
* Then the 'srcRect' offset by 'dstPoint' is clipped against the dst's extent.
* The end result is only valid src pixels and dst pixels will be touched but the copied
* regions will not be shifted.
*/
bool copy(GrSurfaceProxy* src, const SkIRect& srcRect, const SkIPoint& dstPoint) {
return this->onCopy(src, srcRect, dstPoint);
}
bool copy(GrSurfaceProxy* src) {
return this->onCopy(src,
SkIRect::MakeWH(src->width(), src->height()),
SkIPoint::Make(0, 0));
}
// TODO: this is virtual b.c. this object doesn't have a pointer to the wrapped GrSurfaceProxy?
virtual GrSurfaceProxy* asDeferredSurface() = 0;
GrAuditTrail* auditTrail() { return fAuditTrail; }
protected:
GrSurfaceContext(GrContext*, GrAuditTrail*, GrSingleOwner*);
SkDEBUGCODE(GrSingleOwner* singleOwner() { return fSingleOwner; })
GrContext* fContext;
GrAuditTrail* fAuditTrail;
// In debug builds we guard against improper thread handling
SkDEBUGCODE(mutable GrSingleOwner* fSingleOwner;)
private:
virtual bool onCopy(GrSurfaceProxy* src,
const SkIRect& srcRect,
const SkIPoint& dstPoint) = 0;
typedef SkRefCnt INHERITED;
};
#endif
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