Mercurial > sdl-ios-xcode
annotate test/testcdrom.c @ 1212:7663bb0f52c7
To: sdl@libsdl.org
From: Christian Walther <cwalther@gmx.ch>
Date: Thu, 15 Dec 2005 21:19:53 +0100
Subject: [SDL] More mouse enhancements for Mac OS X
The attached patch brings two more enhancements to mouse handling on Mac
OS X (Quartz):
1. Currently, after launching an SDL application, SDL's notion of the
mouse position is stuck in the top left corner (0,0) until the first
time the mouse is moved. That's because the UpdateMouse() function isn't
implemented in the Quartz driver. This patch adds it.
2. When grabbing input while the mouse cursor is hidden, the function
CGAssociateMouseAndMouseCursorPosition(0) is called, which prevents the
system's notion of the mouse location from moving (and therefore leaving
the SDL window) even when the mouse is moved. However, apparently the
Wacom tablet driver (and maybe other special pointing device drivers)
doesn't care about that setting and still allows the mouse location to
go outside of the window. Interestingly, the system cursor, which is
made visible by the existing code in SDL in that case, does not follow
the mouse location, but appears in the middle of the SDL window. The
mouse location being outside of the window however means that mouse
button events go to background applications (or the dock or whatever is
there), which is very confusing to the user who sees no cursor outside
of the SDL window.
I have not found any way of intercepting these events (and that's
probably by design, as "normal" applications shouldn't prevent the user
from bringing other applications' windows to the front by clicking on
them). An idea would be placing a fully transparent, screen-filling
window in front of everything, but I fear that this might affect
rendering performance (by doing unnecessary compositing, using up
memory, or whatever).
The deluxe solution to the problem would be talking to the tablet
driver using AppleEvents to tell it to constrain its mapped area to the
window (see Wacom's "TabletEventDemo" sample app,
http://www.wacomeng.com/devsupport/mac/downloads.html), but I think that
the bloat that solution would add to SDL would outweigh its usefulness.
What I did instead in my patch is reassociating mouse and cursor when
the mouse leaves the window while an invisible grab is in effect, and
restoring the grab when the window is entered. That way, the grab can
still be effectively broken by a tablet, but at least it's obvious to
the user that it is broken. That change is minimal - it doesn't affect
operation with a mouse (or a trackpad), and the code that it adds is not
executed on every PumpEvents() call, only when entering and leaving the
window.
Unless there are any concerns about the patch, please apply. Feel free
to shorten the lengthy comment in SDL_QuartzEvents.m if you think it's
too verbose.
Thanks
-Christian
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Mon, 02 Jan 2006 00:31:00 +0000 |
parents | d93862a3d821 |
children | b2b476a4a73c |
rev | line source |
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0 | 1 |
2 /* Test the SDL CD-ROM audio functions */ | |
3 | |
4 #include <stdlib.h> | |
5 #include <ctype.h> | |
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6 #include <stdlib.h> |
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7 #include <string.h> |
0 | 8 |
9 #include "SDL.h" | |
10 | |
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11 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ |
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12 static void quit(int rc) |
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13 { |
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14 SDL_Quit(); |
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15 exit(rc); |
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16 } |
0 | 17 |
18 static void PrintStatus(int driveindex, SDL_CD *cdrom) | |
19 { | |
20 CDstatus status; | |
21 char *status_str; | |
22 | |
23 status = SDL_CDStatus(cdrom); | |
24 switch (status) { | |
25 case CD_TRAYEMPTY: | |
26 status_str = "tray empty"; | |
27 break; | |
28 case CD_STOPPED: | |
29 status_str = "stopped"; | |
30 break; | |
31 case CD_PLAYING: | |
32 status_str = "playing"; | |
33 break; | |
34 case CD_PAUSED: | |
35 status_str = "paused"; | |
36 break; | |
37 case CD_ERROR: | |
38 status_str = "error state"; | |
39 break; | |
40 } | |
41 printf("Drive %d status: %s\n", driveindex, status_str); | |
42 if ( status >= CD_PLAYING ) { | |
43 int m, s, f; | |
44 FRAMES_TO_MSF(cdrom->cur_frame, &m, &s, &f); | |
45 printf("Currently playing track %d, %d:%2.2d\n", | |
46 cdrom->track[cdrom->cur_track].id, m, s); | |
47 } | |
48 } | |
49 | |
50 static void ListTracks(SDL_CD *cdrom) | |
51 { | |
52 int i; | |
53 int m, s, f; | |
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54 char* trtype; |
0 | 55 |
56 SDL_CDStatus(cdrom); | |
57 printf("Drive tracks: %d\n", cdrom->numtracks); | |
58 for ( i=0; i<cdrom->numtracks; ++i ) { | |
59 FRAMES_TO_MSF(cdrom->track[i].length, &m, &s, &f); | |
60 if ( f > 0 ) | |
61 ++s; | |
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62 switch(cdrom->track[i].type) |
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63 { |
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64 case SDL_AUDIO_TRACK: |
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65 trtype="audio"; |
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66 break; |
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67 case SDL_DATA_TRACK: |
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68 trtype="data"; |
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69 break; |
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70 default: |
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71 trtype="unknown"; |
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72 break; |
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73 } |
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74 printf("\tTrack (index %d) %d: %d:%2.2d / %d [%s track]\n", i, |
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75 cdrom->track[i].id, m, s, cdrom->track[i].length, trtype); |
0 | 76 } |
77 } | |
78 | |
79 static void PrintUsage(char *argv0) | |
80 { | |
81 fprintf(stderr, "Usage: %s [drive#] [command] [command] ...\n", argv0); | |
82 fprintf(stderr, "Where 'command' is one of:\n"); | |
83 fprintf(stderr, " -status\n"); | |
84 fprintf(stderr, " -list\n"); | |
85 fprintf(stderr, " -play [first_track] [first_frame] [num_tracks] [num_frames]\n"); | |
86 fprintf(stderr, " -pause\n"); | |
87 fprintf(stderr, " -resume\n"); | |
88 fprintf(stderr, " -stop\n"); | |
89 fprintf(stderr, " -eject\n"); | |
90 fprintf(stderr, " -sleep <milliseconds>\n"); | |
91 } | |
92 | |
93 int main(int argc, char *argv[]) | |
94 { | |
95 int drive; | |
96 int i; | |
97 SDL_CD *cdrom; | |
98 | |
99 /* Initialize SDL first */ | |
100 if ( SDL_Init(SDL_INIT_CDROM) < 0 ) { | |
101 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); | |
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102 return(1); |
0 | 103 } |
104 | |
105 /* Find out how many CD-ROM drives are connected to the system */ | |
106 if ( SDL_CDNumDrives() == 0 ) { | |
107 printf("No CD-ROM devices detected\n"); | |
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108 quit(0); |
0 | 109 } |
110 printf("Drives available: %d\n", SDL_CDNumDrives()); | |
111 for ( i=0; i<SDL_CDNumDrives(); ++i ) { | |
112 printf("Drive %d: \"%s\"\n", i, SDL_CDName(i)); | |
113 } | |
114 | |
115 /* Open the CD-ROM */ | |
116 drive = 0; | |
117 i=1; | |
118 if ( argv[i] && isdigit(argv[i][0]) ) { | |
119 drive = atoi(argv[i++]); | |
120 } | |
121 cdrom = SDL_CDOpen(drive); | |
122 if ( cdrom == NULL ) { | |
123 fprintf(stderr, "Couldn't open drive %d: %s\n", drive, | |
124 SDL_GetError()); | |
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125 quit(2); |
0 | 126 } |
127 #ifdef TEST_NULLCD | |
128 cdrom = NULL; | |
129 #endif | |
130 | |
131 /* Find out which function to perform */ | |
132 for ( ; argv[i]; ++i ) { | |
133 if ( strcmp(argv[i], "-status") == 0 ) { | |
134 /* PrintStatus(drive, cdrom); */ | |
135 } else | |
136 if ( strcmp(argv[i], "-list") == 0 ) { | |
137 ListTracks(cdrom); | |
138 } else | |
139 if ( strcmp(argv[i], "-play") == 0 ) { | |
140 int strack, sframe; | |
141 int ntrack, nframe; | |
142 | |
143 strack = 0; | |
144 if ( argv[i+1] && isdigit(argv[i+1][0]) ) { | |
145 strack = atoi(argv[++i]); | |
146 } | |
147 sframe = 0; | |
148 if ( argv[i+1] && isdigit(argv[i+1][0]) ) { | |
149 sframe = atoi(argv[++i]); | |
150 } | |
151 ntrack = 0; | |
152 if ( argv[i+1] && isdigit(argv[i+1][0]) ) { | |
153 ntrack = atoi(argv[++i]); | |
154 } | |
155 nframe = 0; | |
156 if ( argv[i+1] && isdigit(argv[i+1][0]) ) { | |
157 nframe = atoi(argv[++i]); | |
158 } | |
159 if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) { | |
160 if ( SDL_CDPlayTracks(cdrom, strack, sframe, | |
161 ntrack, nframe) < 0 ) { | |
162 fprintf(stderr, | |
163 "Couldn't play tracks %d/%d for %d/%d: %s\n", | |
164 strack, sframe, ntrack, nframe, SDL_GetError()); | |
165 } | |
166 } else { | |
167 fprintf(stderr, "No CD in drive!\n"); | |
168 } | |
169 } else | |
170 if ( strcmp(argv[i], "-pause") == 0 ) { | |
171 if ( SDL_CDPause(cdrom) < 0 ) { | |
172 fprintf(stderr, "Couldn't pause CD: %s\n", | |
173 SDL_GetError()); | |
174 } | |
175 } else | |
176 if ( strcmp(argv[i], "-resume") == 0 ) { | |
177 if ( SDL_CDResume(cdrom) < 0 ) { | |
178 fprintf(stderr, "Couldn't resume CD: %s\n", | |
179 SDL_GetError()); | |
180 } | |
181 } else | |
182 if ( strcmp(argv[i], "-stop") == 0 ) { | |
183 if ( SDL_CDStop(cdrom) < 0 ) { | |
184 fprintf(stderr, "Couldn't eject CD: %s\n", | |
185 SDL_GetError()); | |
186 } | |
187 } else | |
188 if ( strcmp(argv[i], "-eject") == 0 ) { | |
189 if ( SDL_CDEject(cdrom) < 0 ) { | |
190 fprintf(stderr, "Couldn't eject CD: %s\n", | |
191 SDL_GetError()); | |
192 } | |
193 } else | |
194 if ( (strcmp(argv[i], "-sleep") == 0) && | |
195 (argv[i+1] && isdigit(argv[i+1][0])) ) { | |
196 SDL_Delay(atoi(argv[++i])); | |
197 printf("Delayed %d milliseconds\n", atoi(argv[i])); | |
198 } else { | |
199 PrintUsage(argv[0]); | |
200 SDL_CDClose(cdrom); | |
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201 quit(1); |
0 | 202 } |
203 } | |
204 PrintStatus(drive, cdrom); | |
205 SDL_CDClose(cdrom); | |
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206 SDL_Quit(); |
0 | 207 |
208 return(0); | |
209 } |