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70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../SDL_internal.h"
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#ifndef SDL_shape_internals_h_
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#define SDL_shape_internals_h_
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#include "SDL_rect.h"
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#include "SDL_shape.h"
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#include "SDL_surface.h"
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#include "begin_code.h"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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/* *INDENT-OFF* */
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extern "C" {
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/* *INDENT-ON* */
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#endif
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typedef struct {
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struct SDL_ShapeTree *upleft,*upright,*downleft,*downright;
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} SDL_QuadTreeChildren;
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typedef union {
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SDL_QuadTreeChildren children;
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SDL_Rect shape;
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} SDL_ShapeUnion;
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typedef enum { QuadShape,TransparentShape,OpaqueShape } SDL_ShapeKind;
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typedef struct {
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SDL_ShapeKind kind;
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SDL_ShapeUnion data;
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} SDL_ShapeTree;
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typedef void(*SDL_TraversalFunction)(SDL_ShapeTree*,void*);
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extern void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode,SDL_Surface *shape,Uint8* bitmap,Uint8 ppb);
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extern SDL_ShapeTree* SDL_CalculateShapeTree(SDL_WindowShapeMode mode,SDL_Surface* shape);
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extern void SDL_TraverseShapeTree(SDL_ShapeTree *tree,SDL_TraversalFunction function,void* closure);
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extern void SDL_FreeShapeTree(SDL_ShapeTree** shape_tree);
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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/* *INDENT-OFF* */
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}
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/* *INDENT-ON* */
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#endif
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#include "close_code.h"
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#endif
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