/work/obj-fuzz/dist/include/mozilla/layers/UpdateImageHelper.h
Line | Count | Source (jump to first uncovered line) |
1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #ifndef GFX_UPDATEIMAGEHELPER_H |
8 | | #define GFX_UPDATEIMAGEHELPER_H |
9 | | |
10 | | #include "Layers.h" |
11 | | #include "mozilla/layers/ImageClient.h" |
12 | | #include "mozilla/layers/TextureClient.h" |
13 | | #include "mozilla/layers/TextureClientRecycleAllocator.h" |
14 | | #include "mozilla/layers/TextureWrapperImage.h" |
15 | | #include "mozilla/gfx/Types.h" |
16 | | |
17 | | namespace mozilla { |
18 | | namespace layers { |
19 | | |
20 | | class UpdateImageHelper |
21 | | { |
22 | | public: |
23 | | UpdateImageHelper(ImageContainer* aImageContainer, |
24 | | ImageClient* aImageClient, |
25 | | gfx::IntSize aImageSize, |
26 | | gfx::SurfaceFormat aFormat) : |
27 | | mImageContainer(aImageContainer), |
28 | | mImageClient(aImageClient), |
29 | | mImageSize(aImageSize), |
30 | | mIsLocked(false) |
31 | 0 | { |
32 | 0 | mTexture = mImageClient->GetTextureClientRecycler()->CreateOrRecycle(aFormat, |
33 | 0 | mImageSize, |
34 | 0 | BackendSelector::Content, |
35 | 0 | TextureFlags::DEFAULT); |
36 | 0 | if (!mTexture) { |
37 | 0 | return; |
38 | 0 | } |
39 | 0 | |
40 | 0 | mIsLocked = mTexture->Lock(OpenMode::OPEN_WRITE_ONLY); |
41 | 0 | if (!mIsLocked) { |
42 | 0 | return; |
43 | 0 | } |
44 | 0 | } |
45 | | |
46 | | ~UpdateImageHelper() |
47 | 0 | { |
48 | 0 | if (mIsLocked) { |
49 | 0 | mTexture->Unlock(); |
50 | 0 | mIsLocked = false; |
51 | 0 | } |
52 | 0 | } |
53 | | |
54 | | already_AddRefed<gfx::DrawTarget> GetDrawTarget() |
55 | 0 | { |
56 | 0 | RefPtr<gfx::DrawTarget> target; |
57 | 0 | if (mTexture) { |
58 | 0 | target = mTexture->BorrowDrawTarget(); |
59 | 0 | } |
60 | 0 | return target.forget(); |
61 | 0 | } |
62 | | |
63 | | bool UpdateImage() |
64 | 0 | { |
65 | 0 | if (!mTexture) { |
66 | 0 | return false; |
67 | 0 | } |
68 | 0 | |
69 | 0 | if (mIsLocked) { |
70 | 0 | mTexture->Unlock(); |
71 | 0 | mIsLocked = false; |
72 | 0 | } |
73 | 0 |
|
74 | 0 | RefPtr<TextureWrapperImage> image = new TextureWrapperImage(mTexture, |
75 | 0 | gfx::IntRect(gfx::IntPoint(0, 0), mImageSize)); |
76 | 0 | mImageContainer->SetCurrentImageInTransaction(image); |
77 | 0 | return mImageClient->UpdateImage(mImageContainer, /* unused */0); |
78 | 0 | } |
79 | | |
80 | | private: |
81 | | RefPtr<ImageContainer> mImageContainer; |
82 | | RefPtr<ImageClient> mImageClient; |
83 | | gfx::IntSize mImageSize; |
84 | | RefPtr<TextureClient> mTexture; |
85 | | bool mIsLocked; |
86 | | }; |
87 | | |
88 | | } // namespace layers |
89 | | } // namespace mozilla |
90 | | |
91 | | #endif // GFX_UPDATEIMAGEHELPER_H |