src/video/SDL_shape_internals.h
author Sam Lantinga <slouken@libsdl.org>
Sun, 14 Jul 2013 11:28:44 -0700
changeset 7776 d4a39491577f
parent 6885 700f1b25f77f
child 8093 b43765095a6f
permissions -rw-r--r--
Added the platform specific messagebox function to the video function list
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
     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_config.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* */
    34 extern "C" {
    35 /* *INDENT-ON* */
    36 #endif
    37 
    38 typedef struct {
    39 	struct SDL_ShapeTree *upleft,*upright,*downleft,*downright;
    40 } SDL_QuadTreeChildren;
    41 
    42 typedef union {
    43 	SDL_QuadTreeChildren children;
    44 	SDL_Rect shape;
    45 } SDL_ShapeUnion;
    46 
    47 typedef enum { QuadShape,TransparentShape,OpaqueShape } SDL_ShapeKind;
    48 
    49 typedef struct {
    50 	SDL_ShapeKind kind;
    51 	SDL_ShapeUnion data;
    52 } SDL_ShapeTree;
    53 	
    54 typedef void(*SDL_TraversalFunction)(SDL_ShapeTree*,void*);
    55 
    56 extern void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode,SDL_Surface *shape,Uint8* bitmap,Uint8 ppb);
    57 extern SDL_ShapeTree* SDL_CalculateShapeTree(SDL_WindowShapeMode mode,SDL_Surface* shape);
    58 extern void SDL_TraverseShapeTree(SDL_ShapeTree *tree,SDL_TraversalFunction function,void* closure);
    59 extern 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