Atlas - SDL_shape_internals.h
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[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "../SDL_internal.h"
22
23#ifndef SDL_shape_internals_h_
24#define SDL_shape_internals_h_
25
26#include "SDL_rect.h"
27#include "SDL_shape.h"
28#include "SDL_surface.h"
29
30#include "begin_code.h"
31/* Set up for C function definitions, even when using C++ */
32#ifdef __cplusplus
33/* *INDENT-OFF* */
34extern "C" {
35/* *INDENT-ON* */
36#endif
37
38typedef struct {
39	struct SDL_ShapeTree *upleft,*upright,*downleft,*downright;
40} SDL_QuadTreeChildren;
41
42typedef union {
43	SDL_QuadTreeChildren children;
44	SDL_Rect shape;
45} SDL_ShapeUnion;
46
47typedef enum { QuadShape,TransparentShape,OpaqueShape } SDL_ShapeKind;
48
49typedef struct {
50	SDL_ShapeKind kind;
51	SDL_ShapeUnion data;
52} SDL_ShapeTree;
53	
54typedef void(*SDL_TraversalFunction)(SDL_ShapeTree*,void*);
55
56extern void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode,SDL_Surface *shape,Uint8* bitmap,Uint8 ppb);
57extern SDL_ShapeTree* SDL_CalculateShapeTree(SDL_WindowShapeMode mode,SDL_Surface* shape);
58extern void SDL_TraverseShapeTree(SDL_ShapeTree *tree,SDL_TraversalFunction function,void* closure);
59extern void SDL_FreeShapeTree(SDL_ShapeTree** shape_tree);
60
61/* Ends C function definitions when using C++ */
62#ifdef __cplusplus
63/* *INDENT-OFF* */
64}
65/* *INDENT-ON* */
66#endif
67#include "close_code.h"
68
69#endif
70
[FILE END]
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