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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkDocument.h" | 8 #include "SkDocument.h" |
9 #include "SkStream.h" | 9 #include "SkStream.h" |
10 | 10 |
11 SkDocument::SkDocument(SkWStream* stream, void (*doneProc)(SkWStream*, bool)) { | 11 SkDocument::SkDocument(SkWStream* stream, void (*doneProc)(SkWStream*, bool)) { |
12 fStream = stream; // we do not own this object. | 12 fStream = stream; // we do not own this object. |
13 fDoneProc = doneProc; | 13 fDoneProc = doneProc; |
14 fState = kBetweenPages_State; | 14 fState = kBetweenPages_State; |
15 } | 15 } |
16 | 16 |
17 SkDocument::~SkDocument() { | 17 SkDocument::~SkDocument() { |
18 this->close(); | 18 this->close(); |
19 } | 19 } |
20 | 20 |
21 SkCanvas* SkDocument::beginPage(SkScalar width, SkScalar height, | 21 SkCanvas* SkDocument::beginPage(SkScalar width, SkScalar height, |
22 const SkRect* content) { | 22 const SkRect* content) { |
23 if (width <= 0 || height <= 0) { | 23 if (width <= 0 || height <= 0) { |
24 return NULL; | 24 return nullptr; |
25 } | 25 } |
26 | 26 |
27 SkRect outer = SkRect::MakeWH(width, height); | 27 SkRect outer = SkRect::MakeWH(width, height); |
28 SkRect inner; | 28 SkRect inner; |
29 if (content) { | 29 if (content) { |
30 inner = *content; | 30 inner = *content; |
31 if (!inner.intersect(outer)) { | 31 if (!inner.intersect(outer)) { |
32 return NULL; | 32 return nullptr; |
33 } | 33 } |
34 } else { | 34 } else { |
35 inner = outer; | 35 inner = outer; |
36 } | 36 } |
37 | 37 |
38 for (;;) { | 38 for (;;) { |
39 switch (fState) { | 39 switch (fState) { |
40 case kBetweenPages_State: | 40 case kBetweenPages_State: |
41 fState = kInPage_State; | 41 fState = kInPage_State; |
42 return this->onBeginPage(width, height, inner); | 42 return this->onBeginPage(width, height, inner); |
43 case kInPage_State: | 43 case kInPage_State: |
44 this->endPage(); | 44 this->endPage(); |
45 break; | 45 break; |
46 case kClosed_State: | 46 case kClosed_State: |
47 return NULL; | 47 return nullptr; |
48 } | 48 } |
49 } | 49 } |
50 SkDEBUGFAIL("never get here"); | 50 SkDEBUGFAIL("never get here"); |
51 return NULL; | 51 return nullptr; |
52 } | 52 } |
53 | 53 |
54 void SkDocument::endPage() { | 54 void SkDocument::endPage() { |
55 if (kInPage_State == fState) { | 55 if (kInPage_State == fState) { |
56 fState = kBetweenPages_State; | 56 fState = kBetweenPages_State; |
57 this->onEndPage(); | 57 this->onEndPage(); |
58 } | 58 } |
59 } | 59 } |
60 | 60 |
61 bool SkDocument::close() { | 61 bool SkDocument::close() { |
62 for (;;) { | 62 for (;;) { |
63 switch (fState) { | 63 switch (fState) { |
64 case kBetweenPages_State: { | 64 case kBetweenPages_State: { |
65 fState = kClosed_State; | 65 fState = kClosed_State; |
66 bool success = this->onClose(fStream); | 66 bool success = this->onClose(fStream); |
67 | 67 |
68 if (fDoneProc) { | 68 if (fDoneProc) { |
69 fDoneProc(fStream, false); | 69 fDoneProc(fStream, false); |
70 } | 70 } |
71 // we don't own the stream, but we mark it NULL since we can | 71 // we don't own the stream, but we mark it nullptr since we can |
72 // no longer write to it. | 72 // no longer write to it. |
73 fStream = NULL; | 73 fStream = nullptr; |
74 return success; | 74 return success; |
75 } | 75 } |
76 case kInPage_State: | 76 case kInPage_State: |
77 this->endPage(); | 77 this->endPage(); |
78 break; | 78 break; |
79 case kClosed_State: | 79 case kClosed_State: |
80 return false; | 80 return false; |
81 } | 81 } |
82 } | 82 } |
83 } | 83 } |
84 | 84 |
85 void SkDocument::abort() { | 85 void SkDocument::abort() { |
86 this->onAbort(); | 86 this->onAbort(); |
87 | 87 |
88 fState = kClosed_State; | 88 fState = kClosed_State; |
89 if (fDoneProc) { | 89 if (fDoneProc) { |
90 fDoneProc(fStream, true); | 90 fDoneProc(fStream, true); |
91 } | 91 } |
92 // we don't own the stream, but we mark it NULL since we can | 92 // we don't own the stream, but we mark it nullptr since we can |
93 // no longer write to it. | 93 // no longer write to it. |
94 fStream = NULL; | 94 fStream = nullptr; |
95 } | 95 } |
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