src/video/SDL_shape_internals.h
author egottlieb
Sat, 14 Aug 2010 20:29:51 -0400
changeset 4850 14870d46ee2d
parent 4837 2e446923c9fb
child 5535 96594ac5fd1a
permissions -rw-r--r--
Mostly seem to have fixed SDL_CalculateShapeTree. Mostly. There still seem to be some rendering artifacts, stepping effects, and such on Windows -- which indicates subtle logic errors in SDL_CalculateShapeTree().

Oh well, back into the salt mine.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 2010 Eli Gottlieb
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Eli Gottlieb
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    eligottlieb@gmail.com
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*/
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#include "SDL_config.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