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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ui/surface/transport_dib.h" | 5 #include "ui/surface/transport_dib.h" |
6 | 6 |
7 #include <windows.h> | 7 #include <windows.h> |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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61 SkCanvas* TransportDIB::GetPlatformCanvas(int w, int h, | 61 SkCanvas* TransportDIB::GetPlatformCanvas(int w, int h, |
62 bool opaque) { | 62 bool opaque) { |
63 // This DIB already mapped the file into this process, but PlatformCanvas | 63 // This DIB already mapped the file into this process, but PlatformCanvas |
64 // will map it again. | 64 // will map it again. |
65 DCHECK(!memory()) << "Mapped file twice in the same process."; | 65 DCHECK(!memory()) << "Mapped file twice in the same process."; |
66 | 66 |
67 // We can't check the canvas size before mapping, but it's safe because | 67 // We can't check the canvas size before mapping, but it's safe because |
68 // Windows will fail to map the section if the dimensions of the canvas | 68 // Windows will fail to map the section if the dimensions of the canvas |
69 // are too large. | 69 // are too large. |
70 SkCanvas* canvas = skia::CreatePlatformCanvas( | 70 SkCanvas* canvas = skia::CreatePlatformCanvas( |
71 w, h, opaque, shared_memory_.handle().GetHandle(), | 71 w, h, opaque, shared_memory_.handle().GetHandle(), |
72 skia::RETURN_NULL_ON_FAILURE); | 72 skia::RETURN_NULL_ON_FAILURE) |
| 73 .release(); |
73 | 74 |
74 // Calculate the size for the memory region backing the canvas. | 75 // Calculate the size for the memory region backing the canvas. |
75 if (canvas) | 76 if (canvas) |
76 size_ = skia::PlatformCanvasStrideForWidth(w) * h; | 77 size_ = skia::PlatformCanvasStrideForWidth(w) * h; |
77 | 78 |
78 return canvas; | 79 return canvas; |
79 } | 80 } |
80 | 81 |
81 bool TransportDIB::Map() { | 82 bool TransportDIB::Map() { |
82 if (!is_valid_handle(shared_memory_.handle())) | 83 if (!is_valid_handle(shared_memory_.handle())) |
83 return false; | 84 return false; |
84 if (memory()) | 85 if (memory()) |
85 return true; | 86 return true; |
86 | 87 |
87 if (!shared_memory_.Map(0 /* map whole shared memory segment */)) { | 88 if (!shared_memory_.Map(0 /* map whole shared memory segment */)) { |
88 LOG(ERROR) << "Failed to map transport DIB" | 89 LOG(ERROR) << "Failed to map transport DIB" |
89 << " handle:" << shared_memory_.handle().GetHandle() | 90 << " handle:" << shared_memory_.handle().GetHandle() |
90 << " error:" << ::GetLastError(); | 91 << " error:" << ::GetLastError(); |
91 return false; | 92 return false; |
92 } | 93 } |
93 | 94 |
94 size_ = shared_memory_.mapped_size(); | 95 size_ = shared_memory_.mapped_size(); |
95 return true; | 96 return true; |
96 } | 97 } |
97 | 98 |
98 void* TransportDIB::memory() const { | 99 void* TransportDIB::memory() const { |
99 return shared_memory_.memory(); | 100 return shared_memory_.memory(); |
100 } | 101 } |
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