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annotate test/checkkeys.c @ 2295:dbc6d1893869

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Checking in Christian Walther's patch for x11 keyboard input. Minor code tweaks by Bob.
author Bob Pendleton <bob@pendleton.com>
date Tue, 08 Jan 2008 00:10:46 +0000
parents c121d94672cb
children c97ad1abe05b
rev   line source
0
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1
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2 /* Simple program: Loop, watching keystrokes
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3 Note that you need to call SDL_PollEvent() or SDL_WaitEvent() to
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4 pump the event loop and catch keystrokes.
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5 */
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6
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10
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11 #include "SDL.h"
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12
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13 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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14 static void
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15 quit(int rc)
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16 {
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17 SDL_Quit();
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18 exit(rc);
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19 }
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20
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21 static void
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22 print_modifiers(void)
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23 {
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24 int mod;
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25 printf(" modifiers:");
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26 mod = SDL_GetModState();
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27 if (!mod) {
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28 printf(" (none)");
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29 return;
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30 }
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31 if (mod & KMOD_LSHIFT)
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32 printf(" LSHIFT");
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33 if (mod & KMOD_RSHIFT)
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34 printf(" RSHIFT");
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35 if (mod & KMOD_LCTRL)
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36 printf(" LCTRL");
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37 if (mod & KMOD_RCTRL)
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38 printf(" RCTRL");
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39 if (mod & KMOD_LALT)
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40 printf(" LALT");
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41 if (mod & KMOD_RALT)
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42 printf(" RALT");
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43 if (mod & KMOD_LMETA)
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44 printf(" LMETA");
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45 if (mod & KMOD_RMETA)
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46 printf(" RMETA");
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47 if (mod & KMOD_NUM)
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48 printf(" NUM");
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49 if (mod & KMOD_CAPS)
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50 printf(" CAPS");
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51 if (mod & KMOD_MODE)
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52 printf(" MODE");
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53 }
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54
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55 static void
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56 PrintKey(SDL_keysym * sym, int pressed)
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57 {
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58 /* Print the keycode, name and state */
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59 if (sym->sym) {
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60 printf("Key %s: physical 0x%08X = %s, layout 0x%08X = %s ",
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61 pressed ? "pressed " : "released",
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62 sym->sym,
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63 SDL_GetKeyName(sym->sym),
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64 SDL_GetLayoutKey(sym->sym),
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65 SDL_GetKeyName(SDL_GetLayoutKey(sym->sym)));
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66 } else {
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67 printf("Unknown Key (scancode = 0x%08X) %s ",
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68 sym->scancode, pressed ? "pressed" : "released");
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69 }
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70
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71 /* Print the translated character, if one exists */
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72 if (sym->unicode) {
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73 /* Is it a control-character? */
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74 if (sym->unicode < ' ') {
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75 printf(" (^%c)", sym->unicode + '@');
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76 } else {
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77 #ifdef UNICODE
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78 printf(" (%c)", sym->unicode);
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79 #else
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80 /* This is a Latin-1 program, so only show 8-bits */
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81 if (!(sym->unicode & 0xFF00))
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82 printf(" (%c)", sym->unicode);
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83 else
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84 printf(" (0x%X)", sym->unicode);
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85 #endif
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86 }
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87 }
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88 print_modifiers();
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89 printf("\n");
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90 }
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91
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92 int
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93 main(int argc, char *argv[])
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94 {
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95 SDL_Event event;
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96 int done;
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97 Uint32 videoflags;
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98
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99 /* Initialize SDL */
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100 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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101 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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102 return (1);
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103 }
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104
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105 videoflags = SDL_SWSURFACE;
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106 while (argc > 1) {
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107 --argc;
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108 if (argv[argc] && !strcmp(argv[argc], "-fullscreen")) {
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109 videoflags |= SDL_FULLSCREEN;
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110 } else {
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111 fprintf(stderr, "Usage: %s [-fullscreen]\n", argv[0]);
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112 quit(1);
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113 }
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114 }
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115
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116 /* Set 640x480 video mode */
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117 if (SDL_SetVideoMode(640, 480, 0, videoflags) == NULL) {
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118 fprintf(stderr, "Couldn't set 640x480 video mode: %s\n",
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119 SDL_GetError());
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120 quit(2);
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121 }
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122
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123 /* Enable UNICODE translation for keyboard input */
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124 SDL_EnableUNICODE(1);
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125
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126 /* Enable auto repeat for keyboard input */
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127 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY,
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128 SDL_DEFAULT_REPEAT_INTERVAL);
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129
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130 /* Watch keystrokes */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
131 done = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
132 while (!done) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
133 /* Check for events */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
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134 SDL_WaitEvent(&event);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1253
diff changeset
135 switch (event.type) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
136 case SDL_KEYDOWN:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
137 PrintKey(&event.key.keysym, 1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
138 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
139 case SDL_KEYUP:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
140 PrintKey(&event.key.keysym, 0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
141 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
142 case SDL_MOUSEBUTTONDOWN:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
143 /* Any button press quits the app... */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
144 case SDL_QUIT:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
145 done = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
146 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
147 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
148 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
149 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
150 }
1151
be9c9c8f6d53 Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents: 493
diff changeset
151
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
152 SDL_Quit();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1253
diff changeset
153 return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
154 }