blob: 8ee6728f56e07a15e323e6507096502e5a28d6f4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* 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.
*/
class SkPDFGraphicState final : public SkPDFObject {
public:
enum SkPDFSMaskMode {
kAlpha_SMaskMode,
kLuminosity_SMaskMode
};
// Override emitObject so that we can populate the dictionary on
// demand.
void emitObject(SkWStream* stream,
const SkPDFObjNumMap& objNumMap) const override;
/** Get the graphic state for the passed SkPaint. The reference count of
* the object is incremented and it is the caller's responsibility to
* unreference it when done. This is needed to accommodate the weak
* reference pattern used when the returned object is new and has no
* other references.
* @param paint The SkPaint to emulate.
*/
static SkPDFGraphicState* GetGraphicStateForPaint(SkPDFCanon* canon,
const SkPaint& paint);
/** 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.
*/
static sk_sp<SkPDFDict> GetSMaskGraphicState(sk_sp<SkPDFObject> sMask,
bool invert,
SkPDFSMaskMode sMaskMode,
SkPDFCanon* canon);
/** Make a graphic state that only unsets the soft mask. */
static sk_sp<SkPDFDict> MakeNoSmaskGraphicState();
static sk_sp<SkPDFStream> MakeInvertFunction();
bool operator==(const SkPDFGraphicState& rhs) const {
return 0 == memcmp(&fStrokeWidth, &rhs.fStrokeWidth, 12);
}
uint32_t hash() const { return SkOpts::hash(&fStrokeWidth, 12); }
private:
const SkScalar fStrokeWidth;
const SkScalar fStrokeMiter;
const uint8_t fAlpha;
const uint8_t fStrokeCap; // SkPaint::Cap
const uint8_t fStrokeJoin; // SkPaint::Join
const uint8_t fMode; // SkBlendMode
SkPDFGraphicState(const SkPaint&);
typedef SkPDFDict INHERITED;
};
#endif
|
