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1 | |
2 /* | 1 /* |
3 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
4 * | 3 * |
5 * 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 |
6 * found in the LICENSE file. | 5 * found in the LICENSE file. |
7 */ | 6 */ |
8 | 7 |
9 #ifndef GrReducedClip_DEFINED | 8 #ifndef GrReducedClip_DEFINED |
10 #define GrReducedClip_DEFINED | 9 #define GrReducedClip_DEFINED |
11 | 10 |
12 #include "SkClipStack.h" | 11 #include "SkClipStack.h" |
13 #include "SkTLList.h" | 12 #include "SkTLList.h" |
14 | 13 |
15 namespace GrReducedClip { | 14 class SK_API GrReducedClip { |
15 public: | |
16 typedef SkTLList<SkClipStack::Element> ElementList; | |
16 | 17 |
17 typedef SkTLList<SkClipStack::Element> ElementList; | 18 enum InitialState { |
19 kAllIn_InitialState, | |
20 kAllOut_InitialState, | |
21 }; | |
18 | 22 |
19 enum InitialState { | 23 /** |
robertphillips
2014/10/23 12:24:17
overlength lines due to new indentation ?
tfarina
2014/10/24 00:38:57
Done.
| |
20 kAllIn_InitialState, | 24 * This function takes a clip stack and a query rectangle and it produces a reduced set of |
21 kAllOut_InitialState, | 25 * SkClipStack::Elements that are equivalent to applying the full stack to t he rectangle. The clip |
26 * stack generation id that represents the list of elements is returned in r esultGenID. The | |
27 * initial state of the query rectangle before the first clip element is app lied is returned via | |
28 * initialState. Optionally, the caller can request a tighter bounds on the clip be returned via | |
29 * tighterBounds. If not NULL, tighterBounds will always be contained by que ryBounds after return. | |
30 * If tighterBounds is specified then it is assumed that the caller will imp licitly clip against it. | |
31 * If the caller specifies non-NULL for requiresAA then it will indicate whe ther anti-aliasing is | |
32 * required to process any of the elements in the result. | |
33 * | |
34 * This may become a member function of SkClipStack when its interface is de termined to be stable. | |
35 * Marked SK_API so that SkLua can call this in a shared library build. | |
36 */ | |
37 static void ReduceClipStack(const SkClipStack& stack, | |
38 const SkIRect& queryBounds, | |
39 ElementList* result, | |
40 int32_t* resultGenID, | |
41 InitialState* initialState, | |
42 SkIRect* tighterBounds = NULL, | |
43 bool* requiresAA = NULL); | |
22 }; | 44 }; |
23 | 45 |
24 /** | |
25 * This function takes a clip stack and a query rectangle and it produces a redu ced set of | |
26 * SkClipStack::Elements that are equivalent to applying the full stack to the r ectangle. The clip | |
27 * stack generation id that represents the list of elements is returned in resul tGenID. The | |
28 * initial state of the query rectangle before the first clip element is applied is returned via | |
29 * initialState. Optionally, the caller can request a tighter bounds on the clip be returned via | |
30 * tighterBounds. If not NULL, tighterBounds will always be contained by queryBo unds after return. | |
31 * If tighterBounds is specified then it is assumed that the caller will implici tly clip against it. | |
32 * If the caller specifies non-NULL for requiresAA then it will indicate whether anti-aliasing is | |
33 * required to process any of the elements in the result. | |
34 * | |
35 * This may become a member function of SkClipStack when its interface is determ ined to be stable. | |
36 * Marked SK_API so that SkLua can call this in a shared library build. | |
37 */ | |
38 SK_API void ReduceClipStack(const SkClipStack& stack, | |
39 const SkIRect& queryBounds, | |
40 ElementList* result, | |
41 int32_t* resultGenID, | |
42 InitialState* initialState, | |
43 SkIRect* tighterBounds = NULL, | |
44 bool* requiresAA = NULL); | |
45 | |
46 } // namespace GrReducedClip | |
47 | |
48 #endif | 46 #endif |
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