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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrAARectRenderer_DEFINED
#define GrAARectRenderer_DEFINED
#include "GrColor.h"
#include "SkMatrix.h"
#include "SkRect.h"
#include "SkRefCnt.h"
#include "SkStrokeRec.h"
class GrGpu;
class GrDrawState;
class GrDrawTarget;
class GrIndexBuffer;
/*
* This class wraps helper functions that draw AA rects (filled & stroked)
*/
class GrAARectRenderer : public SkRefCnt {
public:
SK_DECLARE_INST_COUNT(GrAARectRenderer)
GrAARectRenderer(GrGpu* gpu)
: fGpu(gpu)
, fAAFillRectIndexBuffer(NULL)
, fAAMiterStrokeRectIndexBuffer(NULL)
, fAABevelStrokeRectIndexBuffer(NULL) {
}
void reset();
~GrAARectRenderer() {
this->reset();
}
// TODO: potentialy fuse the fill & stroke methods and differentiate
// between them by passing in stroke (==NULL means fill).
void fillAARect(GrDrawTarget* target,
GrDrawState* ds,
GrColor color,
const SkMatrix& localMatrix,
const SkRect& rect,
const SkMatrix& combinedMatrix,
const SkRect& devRect) {
this->geometryFillAARect(target, ds, color, localMatrix, rect, combinedMatrix, devRect);
}
void strokeAARect(GrDrawTarget*,
GrDrawState*,
GrColor,
const SkMatrix& localMatrix,
const SkRect& rect,
const SkMatrix& combinedMatrix,
const SkRect& devRect,
const SkStrokeRec& stroke);
// First rect is outer; second rect is inner
void fillAANestedRects(GrDrawTarget*,
GrDrawState*,
GrColor,
const SkMatrix& localMatrix,
const SkRect rects[2],
const SkMatrix& combinedMatrix);
private:
GrIndexBuffer* aaStrokeRectIndexBuffer(bool miterStroke);
void geometryFillAARect(GrDrawTarget*,
GrDrawState*,
GrColor,
const SkMatrix& localMatrix,
const SkRect& rect,
const SkMatrix& combinedMatrix,
const SkRect& devRect);
void geometryStrokeAARect(GrDrawTarget*,
GrDrawState*,
GrColor,
const SkMatrix& localMatrix,
const SkRect& devOutside,
const SkRect& devOutsideAssist,
const SkRect& devInside,
bool miterStroke);
GrGpu* fGpu;
GrIndexBuffer* fAAFillRectIndexBuffer;
GrIndexBuffer* fAAMiterStrokeRectIndexBuffer;
GrIndexBuffer* fAABevelStrokeRectIndexBuffer;
typedef SkRefCnt INHERITED;
};
#endif // GrAARectRenderer_DEFINED
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