Mercurial > sdl-ios-xcode
annotate src/events/SDL_active.c @ 1554:0ca607a5d173
Fixed bug #84
Date: Sun, 23 Oct 2005 16:39:03 +0200
From: "A. Schmid" <sahib@phreaker.net>
Subject: [SDL] no software surfaces with svgalib driver?
Hi,
I noticed that the SDL (1.2.9) svgalib driver only makes use of linear
addressable (framebuffer) video modes. On older systems (like one of
mine), linear addressable modes are often not available.
Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is
unusable, since VESA only supports framebuffering for VBE 2.0 and later.
The changes necessary to add support for software surfaces seem to be
relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see
attached patch). The code worked fine for me, but it is no more than a
proof of concept and should be reviewed (probably has a memory leak when
switching modes). It also uses the vgagl library (included in the
svgalib package) and needs to be linked against it.
-Alex
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 19 Mar 2006 12:04:40 +0000 |
| parents | d910939febfa |
| children | a1b03ba2fcd0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1123
diff
changeset
|
3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1123
diff
changeset
|
6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1123
diff
changeset
|
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 | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1123
diff
changeset
|
13 Lesser General Public License for more details. |
| 0 | 14 |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1123
diff
changeset
|
15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1123
diff
changeset
|
16 License along with this library; if not, write to the Free Software |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1123
diff
changeset
|
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
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20 slouken@libsdl.org |
| 0 | 21 */ |
|
1402
d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* Application focus/iconification handling code for SDL */ | |
| 25 | |
| 26 #include "SDL_events.h" | |
| 27 #include "SDL_events_c.h" | |
| 28 | |
| 29 | |
| 30 /* These are static for our active event handling code */ | |
| 31 static Uint8 SDL_appstate = 0; | |
| 32 | |
| 33 /* Public functions */ | |
| 34 int SDL_AppActiveInit(void) | |
| 35 { | |
| 36 /* Start completely active */ | |
| 37 SDL_appstate = (SDL_APPACTIVE|SDL_APPINPUTFOCUS|SDL_APPMOUSEFOCUS); | |
| 38 | |
| 39 /* That's it! */ | |
| 40 return(0); | |
| 41 } | |
|
1123
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
42 void SDL_AppActiveQuit(void) |
|
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
43 { |
|
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
44 } |
| 0 | 45 |
| 46 Uint8 SDL_GetAppState(void) | |
| 47 { | |
| 48 return(SDL_appstate); | |
| 49 } | |
| 50 | |
| 51 /* This is global for SDL_eventloop.c */ | |
| 52 int SDL_PrivateAppActive(Uint8 gain, Uint8 state) | |
| 53 { | |
| 54 int posted; | |
| 55 Uint8 new_state; | |
| 56 | |
| 57 /* Modify the current state with the given mask */ | |
| 58 if ( gain ) { | |
| 59 new_state = (SDL_appstate | state); | |
| 60 } else { | |
| 61 new_state = (SDL_appstate & ~state); | |
| 62 } | |
| 63 | |
| 64 /* Drop events that don't change state */ | |
| 65 if ( new_state == SDL_appstate ) { | |
| 66 return(0); | |
| 67 } | |
| 68 | |
| 69 /* Update internal active state */ | |
| 70 SDL_appstate = new_state; | |
| 71 | |
| 72 /* Post the event, if desired */ | |
| 73 posted = 0; | |
| 74 if ( SDL_ProcessEvents[SDL_ACTIVEEVENT] == SDL_ENABLE ) { | |
| 75 SDL_Event event; | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
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76 SDL_memset(&event, 0, sizeof(event)); |
| 0 | 77 event.type = SDL_ACTIVEEVENT; |
| 78 event.active.gain = gain; | |
| 79 event.active.state = state; | |
| 80 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { | |
| 81 posted = 1; | |
| 82 SDL_PushEvent(&event); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 /* If we lost keyboard focus, post key-up events */ | |
| 87 if ( (state & SDL_APPINPUTFOCUS) && !gain ) { | |
| 88 SDL_ResetKeyboard(); | |
| 89 } | |
| 90 return(posted); | |
| 91 } |