The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/doc/SkDocument.cpp
gfx/skia/trunk/src/doc/SkDocument.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:365219e9aa4c |
|---|---|
| 1 /* | |
| 2 * Copyright 2013 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #include "SkDocument.h" | |
| 9 #include "SkStream.h" | |
| 10 | |
| 11 SkDocument::SkDocument(SkWStream* stream, void (*doneProc)(SkWStream*, bool)) { | |
| 12 fStream = stream; // we do not own this object. | |
| 13 fDoneProc = doneProc; | |
| 14 fState = kBetweenPages_State; | |
| 15 } | |
| 16 | |
| 17 SkDocument::~SkDocument() { | |
| 18 this->close(); | |
| 19 } | |
| 20 | |
| 21 SkCanvas* SkDocument::beginPage(SkScalar width, SkScalar height, | |
| 22 const SkRect* content) { | |
| 23 if (width <= 0 || height <= 0) { | |
| 24 return NULL; | |
| 25 } | |
| 26 | |
| 27 SkRect outer = SkRect::MakeWH(width, height); | |
| 28 SkRect inner; | |
| 29 if (content) { | |
| 30 inner = *content; | |
| 31 if (!inner.intersect(outer)) { | |
| 32 return NULL; | |
| 33 } | |
| 34 } else { | |
| 35 inner = outer; | |
| 36 } | |
| 37 | |
| 38 for (;;) { | |
| 39 switch (fState) { | |
| 40 case kBetweenPages_State: | |
| 41 fState = kInPage_State; | |
| 42 return this->onBeginPage(width, height, inner); | |
| 43 case kInPage_State: | |
| 44 this->endPage(); | |
| 45 break; | |
| 46 case kClosed_State: | |
| 47 return NULL; | |
| 48 } | |
| 49 } | |
| 50 SkDEBUGFAIL("never get here"); | |
| 51 return NULL; | |
| 52 } | |
| 53 | |
| 54 void SkDocument::endPage() { | |
| 55 if (kInPage_State == fState) { | |
| 56 fState = kBetweenPages_State; | |
| 57 this->onEndPage(); | |
| 58 } | |
| 59 } | |
| 60 | |
| 61 bool SkDocument::close() { | |
| 62 for (;;) { | |
| 63 switch (fState) { | |
| 64 case kBetweenPages_State: { | |
| 65 fState = kClosed_State; | |
| 66 bool success = this->onClose(fStream); | |
| 67 | |
| 68 if (fDoneProc) { | |
| 69 fDoneProc(fStream, false); | |
| 70 } | |
| 71 // we don't own the stream, but we mark it NULL since we can | |
| 72 // no longer write to it. | |
| 73 fStream = NULL; | |
| 74 return success; | |
| 75 } | |
| 76 case kInPage_State: | |
| 77 this->endPage(); | |
| 78 break; | |
| 79 case kClosed_State: | |
| 80 return false; | |
| 81 } | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 void SkDocument::abort() { | |
| 86 this->onAbort(); | |
| 87 | |
| 88 fState = kClosed_State; | |
| 89 if (fDoneProc) { | |
| 90 fDoneProc(fStream, true); | |
| 91 } | |
| 92 // we don't own the stream, but we mark it NULL since we can | |
| 93 // no longer write to it. | |
| 94 fStream = NULL; | |
| 95 } |
