Mercurial > sdl-ios-xcode
annotate src/video/bwindow/SDL_sysmouse.cc @ 1555:780fd5b61df1
Fixed bug #89
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 12:05:16 +0000 |
| parents | 376665398b25 |
| children | 782fd950bd46 c121d94672cb 678576473849 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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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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changeset
|
3 Copyright (C) 1997-2006 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)
Sam Lantinga <slouken@libsdl.org>
parents:
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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 |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
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 | |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
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:
769
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:
769
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:
769
diff
changeset
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
252
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Updated the source with the correct e-mail address
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20 slouken@libsdl.org |
| 0 | 21 */ |
|
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376665398b25
Catch the C++ and Objective C sources too...
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 #include <AppKit.h> | |
| 25 #include <GameKit.h> | |
| 26 | |
| 27 #include "SDL_BWin.h" | |
| 28 | |
| 29 extern "C" { | |
| 30 | |
| 31 #include "SDL_sysmouse_c.h" | |
| 32 | |
| 33 /* Convert bits to padded bytes */ | |
| 34 #define PADDED_BITS(bits) ((bits+7)/8) | |
| 35 | |
| 36 /* The implementation dependent data for the window manager cursor */ | |
| 37 struct WMcursor { | |
| 38 char *bits; | |
| 39 }; | |
| 40 | |
| 41 /* Can this be done in the BeOS? */ | |
| 42 WMcursor *BE_CreateWMCursor(_THIS, | |
| 43 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) | |
| 44 { | |
| 45 WMcursor *cursor; | |
| 46 int allowed_x; | |
| 47 int allowed_y; | |
| 48 int run, pad, i; | |
| 49 char *cptr; | |
| 50 | |
| 51 allowed_x = 16; /* BeOS limitation */ | |
| 52 allowed_y = 16; /* BeOS limitation */ | |
| 53 if ( (w > allowed_x) || (h > allowed_y) ) { | |
| 54 SDL_SetError("Only cursors of dimension (%dx%d) are allowed", | |
| 55 allowed_x, allowed_y); | |
| 56 return(NULL); | |
| 57 } | |
| 58 | |
| 59 /* Allocate the cursor */ | |
|
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parents:
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60 cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor)); |
| 0 | 61 if ( cursor == NULL ) { |
| 62 SDL_OutOfMemory(); | |
| 63 return(NULL); | |
| 64 } | |
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Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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65 cursor->bits = (char *)SDL_malloc(4+2*((allowed_x/8)*allowed_y)); |
| 0 | 66 if ( cursor->bits == NULL ) { |
|
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3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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67 SDL_free(cursor); |
| 0 | 68 SDL_OutOfMemory(); |
| 69 return(NULL); | |
| 70 } | |
| 71 cursor->bits[0] = allowed_y; /* Size of the cursor */ | |
| 72 cursor->bits[1] = 1; /* Bit depth of cursor */ | |
| 73 cursor->bits[2] = hot_y; | |
| 74 cursor->bits[3] = hot_x; | |
| 75 cptr = &cursor->bits[4]; | |
| 76 | |
| 77 /* Pad out to the normal cursor size */ | |
| 78 run = PADDED_BITS(w); | |
| 79 pad = PADDED_BITS(allowed_x)-run; | |
| 80 for ( i=0; i<h; ++i ) { | |
|
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3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
81 SDL_memcpy(cptr, data, run); |
|
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
82 SDL_memset(cptr+run, 0, pad); |
| 0 | 83 data += run; |
| 84 cptr += (run+pad); | |
| 85 } | |
| 86 for ( ; i<allowed_y; ++i ) { | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
87 SDL_memset(cptr, 0, run+pad); |
| 0 | 88 cptr += (run+pad); |
| 89 } | |
| 90 for ( i=0; i<h; ++i ) { | |
| 91 /* FIXME: The mask should be OR'd with the data to turn | |
| 92 inverted color pixels black, since inverted color pixels | |
| 93 aren't supported under BeOS. | |
| 94 */ | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
95 SDL_memcpy(cptr, mask, run); |
|
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
96 SDL_memset(cptr+run, 0, pad); |
| 0 | 97 mask += run; |
| 98 cptr += (run+pad); | |
| 99 } | |
| 100 for ( ; i<allowed_y; ++i ) { | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
101 SDL_memset(cptr, 0, run+pad); |
| 0 | 102 cptr += (run+pad); |
| 103 } | |
| 104 return(cursor); | |
| 105 } | |
| 106 | |
| 107 int BE_ShowWMCursor(_THIS, WMcursor *cursor) | |
| 108 { | |
| 109 if ( be_app->Lock() ) { | |
| 110 if ( cursor == NULL ) { | |
| 111 if ( SDL_BlankCursor != NULL ) { | |
| 112 be_app->SetCursor(SDL_BlankCursor->bits); | |
| 113 } | |
| 114 } else { | |
| 115 be_app->SetCursor(cursor->bits); | |
| 116 } | |
| 117 be_app->Unlock(); | |
| 118 } | |
| 119 return(1); | |
| 120 } | |
| 121 | |
| 122 void BE_FreeWMCursor(_THIS, WMcursor *cursor) | |
| 123 { | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
124 SDL_free(cursor->bits); |
|
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
125 SDL_free(cursor); |
| 0 | 126 } |
| 127 | |
| 128 /* Implementation by Christian Bauer <cbauer@student.physik.uni-mainz.de> */ | |
| 129 void BE_WarpWMCursor(_THIS, Uint16 x, Uint16 y) | |
| 130 { | |
| 131 BPoint pt(x, y); | |
| 132 SDL_Win->Lock(); | |
| 133 SDL_Win->ConvertToScreen(&pt); | |
| 134 SDL_Win->Unlock(); | |
| 135 set_mouse_position((int32)pt.x, (int32)pt.y); | |
| 136 } | |
| 137 | |
| 138 }; /* Extern C */ |