Mercurial > sdl-ios-xcode
view src/video/SDL_pixels_c.h @ 1258:b2283b0ded26
Date: Thu, 19 Jan 2006 20:02:29 +0200
From: Vassilis Virvilis <vasvir@iit.demokritos.gr>
Subject: [SDL] Request: Please reconsider adding tag in SDL_Event
Hi,
Patch in question:
--- include/SDL_events.h 20 Aug 2004 18:57:01 -0000 1.11
+++ include/SDL_events.h 19 Jan 2006 17:35:09 -0000
@@ -214,7 +214,7 @@
} SDL_SysWMEvent;
/* General event structure */
-typedef union {
+typedef union SDL_Event {
Uint8 type;
SDL_ActiveEvent active;
SDL_KeyboardEvent key;
Reasoning:
----------
1) Allows forward declaration of the SDL_Event union in C++. Please
note that in plain C it is possible to forward declare it.
2) Forward declaration is good because it allows encapsulation. It hides
the specific implementation and does not necessarily exposes SDL staff
to my appication's namespace
3) It can't harm plain C because tags are living in a different namespace
than typenames
4) It is already done like this in other places in SDL. Check for example
SDL_KeySym, and SDL_.*Event structures.
5) Right now I have to include SDL/event.h from a C++ header file. See 2)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 20 Jan 2006 13:07:25 +0000 |
| parents | b8d311d90021 |
| children | c9b51268668f |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* Useful functions and variables from SDL_pixel.c */ #include "SDL_blit.h" /* Pixel format functions */ extern SDL_PixelFormat *SDL_AllocFormat(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); extern SDL_PixelFormat *SDL_ReallocFormat(SDL_Surface *surface, int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); extern void SDL_FormatChanged(SDL_Surface *surface); extern void SDL_FreeFormat(SDL_PixelFormat *format); /* Blit mapping functions */ extern SDL_BlitMap *SDL_AllocBlitMap(void); extern void SDL_InvalidateMap(SDL_BlitMap *map); extern int SDL_MapSurface (SDL_Surface *src, SDL_Surface *dst); extern void SDL_FreeBlitMap(SDL_BlitMap *map); /* Miscellaneous functions */ extern Uint16 SDL_CalculatePitch(SDL_Surface *surface); extern void SDL_DitherColors(SDL_Color *colors, int bpp); extern Uint8 SDL_FindColor(SDL_Palette *pal, Uint8 r, Uint8 g, Uint8 b); extern void SDL_ApplyGamma(Uint16 *gamma, SDL_Color *colors, SDL_Color *output, int ncolors);