Mercurial > sdl-ios-xcode
annotate include/SDL_rwops.h @ 816:428f688f2ad2
Date: Fri, 13 Feb 2004 17:03:16 +0100
From: Max Horn
Subject: Modifier key fix
The internal modifier state can get out of sync with reality. To
trigger this, do for example this:
1) Launch an SDL app
2) Alt-click on the desktop (this will hide the SDL app).
3) Bring the SDL app back to the front
4) SDL will still think alt is pressed (and as such will treat left
clicks like middle clicks). If you press and release alt, it'll be fine
again.
The attached patch cures this by rechecking the modifier state whenever
we process an event.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 13 Feb 2004 17:57:16 +0000 |
| parents | b8d311d90021 |
| children | 02759105b989 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
769
b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
764
diff
changeset
|
3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
251
b8688cfdc232
Updated the headers with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* This file provides a general interface for SDL to read and write | |
| 29 data sources. It can easily be extended to files, memory, etc. | |
| 30 */ | |
| 31 | |
| 32 #ifndef _SDL_RWops_h | |
| 33 #define _SDL_RWops_h | |
| 34 | |
| 35 #include <stdio.h> | |
| 36 | |
| 37 #include "SDL_types.h" | |
| 38 | |
| 39 #include "begin_code.h" | |
| 40 /* Set up for C function definitions, even when using C++ */ | |
| 41 #ifdef __cplusplus | |
| 42 extern "C" { | |
| 43 #endif | |
| 44 | |
| 45 /* This is the read/write operation structure -- very basic */ | |
| 46 | |
| 47 typedef struct SDL_RWops { | |
| 48 /* Seek to 'offset' relative to whence, one of stdio's whence values: | |
| 49 SEEK_SET, SEEK_CUR, SEEK_END | |
| 50 Returns the final offset in the data source. | |
| 51 */ | |
| 52 int (*seek)(struct SDL_RWops *context, int offset, int whence); | |
| 53 | |
| 54 /* Read up to 'num' objects each of size 'objsize' from the data | |
| 55 source to the area pointed at by 'ptr'. | |
| 56 Returns the number of objects read, or -1 if the read failed. | |
| 57 */ | |
| 58 int (*read)(struct SDL_RWops *context, void *ptr, int size, int maxnum); | |
| 59 | |
| 60 /* Write exactly 'num' objects each of size 'objsize' from the area | |
| 61 pointed at by 'ptr' to data source. | |
| 62 Returns 'num', or -1 if the write failed. | |
| 63 */ | |
| 64 int (*write)(struct SDL_RWops *context, const void *ptr, int size, int num); | |
| 65 | |
| 66 /* Close and free an allocated SDL_FSops structure */ | |
| 67 int (*close)(struct SDL_RWops *context); | |
| 68 | |
| 69 Uint32 type; | |
| 70 union { | |
| 71 struct { | |
| 72 int autoclose; | |
| 73 FILE *fp; | |
| 74 } stdio; | |
| 75 struct { | |
| 76 Uint8 *base; | |
| 77 Uint8 *here; | |
| 78 Uint8 *stop; | |
| 79 } mem; | |
| 80 struct { | |
| 81 void *data1; | |
| 82 } unknown; | |
| 83 } hidden; | |
| 84 | |
| 85 } SDL_RWops; | |
| 86 | |
| 87 | |
| 88 /* Functions to create SDL_RWops structures from various data sources */ | |
| 89 | |
|
337
9154ec9ca3d2
Explicitly specify the SDL API calling convention (C by default)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
90 extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromFile(const char *file, const char *mode); |
| 0 | 91 |
|
337
9154ec9ca3d2
Explicitly specify the SDL API calling convention (C by default)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
92 extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromFP(FILE *fp, int autoclose); |
| 0 | 93 |
|
337
9154ec9ca3d2
Explicitly specify the SDL API calling convention (C by default)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
94 extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromMem(void *mem, int size); |
|
764
974c0fb74bf8
Added function to create RWops from const memory: SDL_RWFromConstMem()
Sam Lantinga <slouken@libsdl.org>
parents:
337
diff
changeset
|
95 extern DECLSPEC SDL_RWops * SDLCALL SDL_RWFromConstMem(const void *mem, int size); |
| 0 | 96 |
|
337
9154ec9ca3d2
Explicitly specify the SDL API calling convention (C by default)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
97 extern DECLSPEC SDL_RWops * SDLCALL SDL_AllocRW(void); |
|
9154ec9ca3d2
Explicitly specify the SDL API calling convention (C by default)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
98 extern DECLSPEC void SDLCALL SDL_FreeRW(SDL_RWops *area); |
| 0 | 99 |
| 100 /* Macros to easily read and write from an SDL_RWops structure */ | |
| 101 #define SDL_RWseek(ctx, offset, whence) (ctx)->seek(ctx, offset, whence) | |
| 102 #define SDL_RWtell(ctx) (ctx)->seek(ctx, 0, SEEK_CUR) | |
| 103 #define SDL_RWread(ctx, ptr, size, n) (ctx)->read(ctx, ptr, size, n) | |
| 104 #define SDL_RWwrite(ctx, ptr, size, n) (ctx)->write(ctx, ptr, size, n) | |
| 105 #define SDL_RWclose(ctx) (ctx)->close(ctx) | |
| 106 | |
| 107 | |
| 108 /* Ends C function definitions when using C++ */ | |
| 109 #ifdef __cplusplus | |
| 110 } | |
| 111 #endif | |
| 112 #include "close_code.h" | |
| 113 | |
| 114 #endif /* _SDL_RWops_h */ |