gfx/skia/trunk/include/utils/SkCanvasStateUtils.h@129ffea94266 (annotated)
gfx/skia/trunk/include/utils/SkCanvasStateUtils.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2013 Google Inc. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 5 | * found in the LICENSE file. |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | #ifndef SkCanvasStateUtils_DEFINED |
| michael@0 | 9 | #define SkCanvasStateUtils_DEFINED |
| michael@0 | 10 | |
| michael@0 | 11 | #include "SkCanvas.h" |
| michael@0 | 12 | |
| michael@0 | 13 | class SkCanvasState; |
| michael@0 | 14 | |
| michael@0 | 15 | /** |
| michael@0 | 16 | * A set of functions that are useful for copying an SkCanvas across a library |
| michael@0 | 17 | * boundary where the Skia libraries on either side of the boundary may not be |
| michael@0 | 18 | * version identical. The expected usage is outline below... |
| michael@0 | 19 | * |
| michael@0 | 20 | * Lib Boundary |
| michael@0 | 21 | * CaptureCanvasState(...) ||| |
| michael@0 | 22 | * SkCanvas --> SkCanvasState ||| |
| michael@0 | 23 | * ||| CreateFromCanvasState(...) |
| michael@0 | 24 | * ||| SkCanvasState --> SkCanvas` |
| michael@0 | 25 | * ||| Draw into SkCanvas` |
| michael@0 | 26 | * ||| Unref SkCanvas` |
| michael@0 | 27 | * ReleaseCanvasState(...) ||| |
| michael@0 | 28 | * |
| michael@0 | 29 | */ |
| michael@0 | 30 | namespace SkCanvasStateUtils { |
| michael@0 | 31 | /** |
| michael@0 | 32 | * Captures the current state of the canvas into an opaque ptr that is safe |
| michael@0 | 33 | * to pass between different instances of Skia (which may or may not be the |
| michael@0 | 34 | * same version). The function will return NULL in the event that one of the |
| michael@0 | 35 | * following conditions are true. |
| michael@0 | 36 | * 1) the canvas device type is not supported (currently only raster is supported) |
| michael@0 | 37 | * 2) the canvas clip type is not supported (currently only non-AA clips are supported) |
| michael@0 | 38 | * |
| michael@0 | 39 | * It is recommended that the original canvas also not be used until all |
| michael@0 | 40 | * canvases that have been created using its captured state have been dereferenced. |
| michael@0 | 41 | * |
| michael@0 | 42 | * Finally, it is important to note that any draw filters attached to the |
| michael@0 | 43 | * canvas are NOT currently captured. |
| michael@0 | 44 | * |
| michael@0 | 45 | * @param canvas The canvas you wish to capture the current state of. |
| michael@0 | 46 | * @return NULL or an opaque ptr that can be passed to CreateFromCanvasState |
| michael@0 | 47 | * to reconstruct the canvas. The caller is responsible for calling |
| michael@0 | 48 | * ReleaseCanvasState to free the memory associated with this state. |
| michael@0 | 49 | */ |
| michael@0 | 50 | SK_API SkCanvasState* CaptureCanvasState(SkCanvas* canvas); |
| michael@0 | 51 | |
| michael@0 | 52 | /** |
| michael@0 | 53 | * Create a new SkCanvas from the captured state of another SkCanvas. The |
| michael@0 | 54 | * function will return NULL in the event that one of the |
| michael@0 | 55 | * following conditions are true. |
| michael@0 | 56 | * 1) the captured state is in an unrecognized format |
| michael@0 | 57 | * 2) the captured canvas device type is not supported |
| michael@0 | 58 | * |
| michael@0 | 59 | * @param canvas The canvas you wish to capture the current state of. |
| michael@0 | 60 | * @return NULL or an SkCanvas* whose devices and matrix/clip state are |
| michael@0 | 61 | * identical to the captured canvas. The caller is responsible for |
| michael@0 | 62 | * calling unref on the SkCanvas. |
| michael@0 | 63 | */ |
| michael@0 | 64 | SK_API SkCanvas* CreateFromCanvasState(const SkCanvasState* state); |
| michael@0 | 65 | |
| michael@0 | 66 | /** |
| michael@0 | 67 | * Free the memory associated with the captured canvas state. The state |
| michael@0 | 68 | * should not be released until all SkCanvas objects created using that |
| michael@0 | 69 | * state have been dereferenced. |
| michael@0 | 70 | * |
| michael@0 | 71 | * @param state The captured state you wish to dispose of. |
| michael@0 | 72 | */ |
| michael@0 | 73 | SK_API void ReleaseCanvasState(SkCanvasState* state); |
| michael@0 | 74 | }; |
| michael@0 | 75 | |
| michael@0 | 76 | #endif |
