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/*
* Copyright 2010 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPDFGraphicState_DEFINED
#define SkPDFGraphicState_DEFINED
#include "SkPDFTypes.h"
#include "SkOpts.h"
class SkPaint;
class SkPDFCanon;
/** \class SkPDFGraphicState
SkPaint objects roughly correspond to graphic state dictionaries that can
be installed. So that a given dictionary is only output to the pdf file
once, we want to canonicalize them.
*/
namespace SkPDFGraphicState {
enum SkPDFSMaskMode {
kAlpha_SMaskMode,
kLuminosity_SMaskMode
};
/** Get the graphic state for the passed SkPaint.
*/
sk_sp<SkPDFDict> GetGraphicStateForPaint(SkPDFCanon*, const SkPaint&);
/** Make a graphic state that only sets the passed soft mask.
* @param sMask The form xobject to use as a soft mask.
* @param invert Indicates if the alpha of the sMask should be inverted.
* @param sMaskMode Whether to use alpha or luminosity for the sMask.
*
* These are not de-duped.
*/
sk_sp<SkPDFDict> GetSMaskGraphicState(sk_sp<SkPDFObject> sMask,
bool invert,
SkPDFSMaskMode sMaskMode,
SkPDFCanon* canon);
sk_sp<SkPDFStream> MakeInvertFunction();
}
SK_BEGIN_REQUIRE_DENSE
struct SkPDFStrokeGraphicState {
SkScalar fStrokeWidth;
SkScalar fStrokeMiter;
uint8_t fStrokeCap; // SkPaint::Cap
uint8_t fStrokeJoin; // SkPaint::Join
uint8_t fAlpha;
uint8_t fBlendMode;
bool operator==(const SkPDFStrokeGraphicState& o) const { return !memcmp(this, &o, sizeof(o)); }
bool operator!=(const SkPDFStrokeGraphicState& o) const { return !(*this == o); }
};
SK_END_REQUIRE_DENSE
SK_BEGIN_REQUIRE_DENSE
struct SkPDFFillGraphicState {
uint8_t fAlpha;
uint8_t fBlendMode;
bool operator==(const SkPDFFillGraphicState& o) const { return !memcmp(this, &o, sizeof(o)); }
bool operator!=(const SkPDFFillGraphicState& o) const { return !(*this == o); }
};
SK_END_REQUIRE_DENSE
#endif
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