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annotate src/video/SDL_shape_internals.h @ 4832:0c82f20327ec

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Correcting minor bugs and adding assertions to help me track down a NULL pointer bug in Cocoa code.
author egottlieb
date Thu, 05 Aug 2010 00:53:38 -0400
parents 3dfe779900f5
children 2e446923c9fb
rev   line source
4814
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Eli Gottlieb <eligottlieb@gmail.com>
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 2010 Eli Gottlieb
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Eli Gottlieb
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20 eligottlieb@gmail.com
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21 */
4817
c68e7490e4cf Fixed a couple of bugs in the general and X11 shape code, and fixed a bug in testshape that was keeping it from recognizing surfaces without alpha. Thanks to Andreas's bit-bashing tip, X11 shaped windows now work entirely, AFAICT.
Eli Gottlieb <eligottlieb@gmail.com>
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22 #include "SDL_config.h"
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23
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24 #ifndef _SDL_shape_internals_h
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25 #define _SDL_shape_internals_h
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26
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27 #include "SDL_rect.h"
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28 #include "SDL_shape.h"
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29 #include "SDL_surface.h"
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30
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31 #include "begin_code.h"
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32 /* Set up for C function definitions, even when using C++ */
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33 #ifdef __cplusplus
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34 /* *INDENT-OFF* */
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35 extern "C" {
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36 /* *INDENT-ON* */
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37 #endif
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38
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39 typedef struct {
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40 struct SDL_ShapeTree *upleft,*upright,*downleft,*downright;
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41 } SDL_QuadTreeChildren;
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42
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43 typedef union {
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44 SDL_QuadTreeChildren children;
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45 SDL_Rect shape;
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46 } SDL_ShapeUnion;
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47
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48 typedef enum { QuadShape,TransparentShape,OpaqueShape } SDL_ShapeKind;
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49
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50 typedef struct {
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51 SDL_ShapeKind kind;
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52 SDL_ShapeUnion data;
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53 } SDL_ShapeTree;
4830
3dfe779900f5 Compiling for cocoa now works. Does it run? We'll see.
egottlieb
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54
3dfe779900f5 Compiling for cocoa now works. Does it run? We'll see.
egottlieb
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55 typedef void(*SDL_TraversalFunction)(SDL_ShapeTree*,void*);
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56
4817
c68e7490e4cf Fixed a couple of bugs in the general and X11 shape code, and fixed a bug in testshape that was keeping it from recognizing surfaces without alpha. Thanks to Andreas's bit-bashing tip, X11 shaped windows now work entirely, AFAICT.
Eli Gottlieb <eligottlieb@gmail.com>
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57 extern void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode,SDL_Surface *shape,Uint8* bitmap,Uint8 ppb);
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58 extern SDL_ShapeTree* SDL_CalculateShapeTree(SDL_WindowShapeMode mode,SDL_Surface* shape,SDL_bool invert);
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3dfe779900f5 Compiling for cocoa now works. Does it run? We'll see.
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59 extern void SDL_TraverseShapeTree(SDL_ShapeTree *tree,SDL_TraversalFunction function,void* closure);
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60 extern void SDL_FreeShapeTree(SDL_ShapeTree** shapeTree);
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61
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62 /* Ends C function definitions when using C++ */
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63 #ifdef __cplusplus
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64 /* *INDENT-OFF* */
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65 }
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66 /* *INDENT-ON* */
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67 #endif
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68 #include "close_code.h"
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69
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70 #endif