Mercurial > sdl-ios-xcode
annotate include/SDL_timer.h @ 3191:91b335df6fc8
Fixed bug #750
Since many different event structures include windowID it should be placed near
the beginning of the structure (preferably right after type) so it's position
is the same between different events.
This is to avoid code like this:
if (event.type == SDL_WINDOWEVENT)
win = event.window.windowID;
else if ((SDL_EVENTMASK(event.type) & SDL_KEYEVENTMASK) != 0)
win = event.key.windowID;
else if (event.type == SDL_TEXTINPUT)
win = event.text.windowID;
else if (event.type == SDL_MOUSEMOTION)
win = event.motion.windowID;
else if ((SDL_EVENTMASK(event.type) & (SDL_MOUBUTTONDOWNMASK |
SDL_MOUBUTTONUPMASK)) != 0)
win = event.button.windowID;
else if (event.type == SDL_MOUSEWHEEL)
win = event.wheel.windowID;
...
in favor of:
win = event.window.windowID;
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 10 Jun 2009 14:00:21 +0000 |
| parents | 99210400e8b9 |
| children | d3baf5ac4e37 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 2859 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 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. |
| 0 | 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 | |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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parents:
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|
15 You should have received a copy of the GNU Lesser General Public |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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16 License along with this library; if not, write to the Free Software |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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parents:
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifndef _SDL_timer_h | |
| 24 #define _SDL_timer_h | |
| 25 | |
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26 /** |
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27 * \file SDL_timer.h |
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28 * |
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29 * Header for the SDL time management routines |
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30 */ |
| 0 | 31 |
|
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32 #include "SDL_stdinc.h" |
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More header massaging... works great on Windows. ;-)
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33 #include "SDL_error.h" |
| 0 | 34 |
| 35 #include "begin_code.h" | |
| 36 /* Set up for C function definitions, even when using C++ */ | |
| 37 #ifdef __cplusplus | |
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38 /* *INDENT-OFF* */ |
| 0 | 39 extern "C" { |
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parents:
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40 /* *INDENT-ON* */ |
| 0 | 41 #endif |
| 42 | |
| 43 /* This is the OS scheduler timeslice, in milliseconds */ | |
| 44 #define SDL_TIMESLICE 10 | |
| 45 | |
| 46 /* This is the maximum resolution of the SDL timer on all platforms */ | |
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parents:
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47 #define TIMER_RESOLUTION 10 /* Experimentally determined */ |
| 0 | 48 |
| 49 /* Get the number of milliseconds since the SDL library initialization. | |
| 50 * Note that this value wraps if the program runs for more than ~49 days. | |
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parents:
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51 */ |
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52 extern DECLSPEC Uint32 SDLCALL SDL_GetTicks(void); |
| 0 | 53 |
| 54 /* Wait a specified number of milliseconds before returning */ | |
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55 extern DECLSPEC void SDLCALL SDL_Delay(Uint32 ms); |
| 0 | 56 |
| 57 /* Function prototype for the timer callback function */ | |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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58 typedef Uint32(SDLCALL * SDL_TimerCallback) (Uint32 interval); |
| 0 | 59 |
| 60 /* Set a callback to run after the specified number of milliseconds has | |
| 61 * elapsed. The callback function is passed the current timer interval | |
| 62 * and returns the next timer interval. If the returned value is the | |
| 63 * same as the one passed in, the periodic alarm continues, otherwise a | |
| 64 * new alarm is scheduled. If the callback returns 0, the periodic alarm | |
| 65 * is cancelled. | |
| 66 * | |
| 67 * To cancel a currently running timer, call SDL_SetTimer(0, NULL); | |
| 68 * | |
| 69 * The timer callback function may run in a different thread than your | |
| 70 * main code, and so shouldn't call any functions from within itself. | |
| 71 * | |
| 72 * The maximum resolution of this timer is 10 ms, which means that if | |
| 73 * you request a 16 ms timer, your callback will run approximately 20 ms | |
| 74 * later on an unloaded system. If you wanted to set a flag signaling | |
| 75 * a frame update at 30 frames per second (every 33 ms), you might set a | |
| 76 * timer for 30 ms: | |
| 77 * SDL_SetTimer((33/10)*10, flag_update); | |
| 78 * | |
| 79 * If you use this function, you need to pass SDL_INIT_TIMER to SDL_Init(). | |
| 80 * | |
| 81 * Under UNIX, you should not use raise or use SIGALRM and this function | |
| 82 * in the same program, as it is implemented using setitimer(). You also | |
| 83 * should not use this function in multi-threaded applications as signals | |
| 84 * to multi-threaded apps have undefined behavior in some implementations. | |
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Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
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85 * |
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5ba65305c954
Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents:
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86 * This function returns 0 if successful, or -1 if there was an error. |
| 0 | 87 */ |
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parents:
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88 extern DECLSPEC int SDLCALL SDL_SetTimer(Uint32 interval, |
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c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
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89 SDL_TimerCallback callback); |
| 0 | 90 |
| 91 /* New timer API, supports multiple timers | |
| 92 * Written by Stephane Peter <megastep@lokigames.com> | |
| 93 */ | |
| 94 | |
| 95 /* Function prototype for the new timer callback function. | |
| 96 * The callback function is passed the current timer interval and returns | |
| 97 * the next timer interval. If the returned value is the same as the one | |
| 98 * passed in, the periodic alarm continues, otherwise a new alarm is | |
| 99 * scheduled. If the callback returns 0, the periodic alarm is cancelled. | |
| 100 */ | |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
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101 typedef Uint32(SDLCALL * SDL_NewTimerCallback) (Uint32 interval, void *param); |
| 0 | 102 |
| 103 /* Definition of the timer ID type */ | |
| 104 typedef struct _SDL_TimerID *SDL_TimerID; | |
| 105 | |
| 106 /* Add a new timer to the pool of timers already running. | |
| 107 Returns a timer ID, or NULL when an error occurs. | |
| 108 */ | |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
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109 extern DECLSPEC SDL_TimerID SDLCALL SDL_AddTimer(Uint32 interval, |
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c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
|
110 SDL_NewTimerCallback |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
|
111 callback, void *param); |
| 0 | 112 |
| 113 /* Remove one of the multiple timers knowing its ID. | |
| 114 * Returns a boolean value indicating success. | |
| 115 */ | |
|
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Explicitly specify the SDL API calling convention (C by default)
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parents:
297
diff
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116 extern DECLSPEC SDL_bool SDLCALL SDL_RemoveTimer(SDL_TimerID t); |
| 0 | 117 |
| 118 /* Ends C function definitions when using C++ */ | |
| 119 #ifdef __cplusplus | |
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1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
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120 /* *INDENT-OFF* */ |
| 0 | 121 } |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
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122 /* *INDENT-ON* */ |
| 0 | 123 #endif |
| 124 #include "close_code.h" | |
| 125 | |
| 126 #endif /* _SDL_timer_h */ | |
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1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
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127 |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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128 /* vi: set ts=4 sw=4 expandtab: */ |