forked from Green-Sky/tomato
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 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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struct SDL_ShapeTree;
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typedef struct
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{
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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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{
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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
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{
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QuadShape,
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TransparentShape,
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OpaqueShape
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} SDL_ShapeKind;
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typedef struct SDL_ShapeTree
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{
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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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#endif /* SDL_shape_internals_h_ */
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