test/checkkeys.c
author Philipp Wiesemann <philipp.wiesemann@arcor.de>
Wed, 25 Nov 2015 21:39:28 +0100
changeset 9922 b066d5fd5fa7
parent 9667 e55dad50b3ae
child 9998 f67cf37e9cd4
permissions -rw-r--r--
Replaced tabs with spaces in test programs.
slouken@5535
     1
/*
slouken@9619
     2
  Copyright (C) 1997-2015 Sam Lantinga <slouken@libsdl.org>
slouken@5535
     3
slouken@5535
     4
  This software is provided 'as-is', without any express or implied
slouken@5535
     5
  warranty.  In no event will the authors be held liable for any damages
slouken@5535
     6
  arising from the use of this software.
slouken@5535
     7
slouken@5535
     8
  Permission is granted to anyone to use this software for any purpose,
slouken@5535
     9
  including commercial applications, and to alter it and redistribute it
slouken@5535
    10
  freely.
slouken@5535
    11
*/
slouken@0
    12
slouken@0
    13
/* Simple program:  Loop, watching keystrokes
slouken@7191
    14
   Note that you need to call SDL_PollEvent() or SDL_WaitEvent() to
slouken@0
    15
   pump the event loop and catch keystrokes.
slouken@0
    16
*/
slouken@0
    17
slouken@0
    18
#include <stdio.h>
slouken@0
    19
#include <stdlib.h>
slouken@0
    20
#include <string.h>
slouken@0
    21
icculus@9278
    22
#ifdef __EMSCRIPTEN__
icculus@9278
    23
#include <emscripten/emscripten.h>
icculus@9278
    24
#endif
icculus@9278
    25
slouken@0
    26
#include "SDL.h"
slouken@0
    27
icculus@9278
    28
int done;
icculus@9278
    29
icculus@1151
    30
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
slouken@1895
    31
static void
slouken@1895
    32
quit(int rc)
icculus@1151
    33
{
slouken@1895
    34
    SDL_Quit();
slouken@1895
    35
    exit(rc);
icculus@1151
    36
}
icculus@1151
    37
slouken@1895
    38
static void
slouken@5461
    39
print_string(char **text, size_t *maxlen, const char *fmt, ...)
slouken@5461
    40
{
slouken@5461
    41
    int len;
slouken@5461
    42
    va_list ap;
slouken@5461
    43
slouken@5461
    44
    va_start(ap, fmt);
slouken@5461
    45
    len = SDL_vsnprintf(*text, *maxlen, fmt, ap);
slouken@5461
    46
    if (len > 0) {
slouken@5461
    47
        *text += len;
icculus@5879
    48
        if ( ((size_t) len) < *maxlen ) {
icculus@5879
    49
            *maxlen -= (size_t) len;
slouken@5461
    50
        } else {
slouken@5461
    51
            *maxlen = 0;
slouken@5461
    52
        }
slouken@5461
    53
    }
slouken@5461
    54
    va_end(ap);
slouken@5461
    55
}
slouken@5461
    56
slouken@5461
    57
static void
slouken@5461
    58
print_modifiers(char **text, size_t *maxlen)
slouken@0
    59
{
slouken@1895
    60
    int mod;
slouken@5461
    61
    print_string(text, maxlen, " modifiers:");
slouken@1895
    62
    mod = SDL_GetModState();
slouken@1895
    63
    if (!mod) {
slouken@5461
    64
        print_string(text, maxlen, " (none)");
slouken@1895
    65
        return;
slouken@1895
    66
    }
slouken@1895
    67
    if (mod & KMOD_LSHIFT)
slouken@5461
    68
        print_string(text, maxlen, " LSHIFT");
slouken@1895
    69
    if (mod & KMOD_RSHIFT)
slouken@5461
    70
        print_string(text, maxlen, " RSHIFT");
slouken@1895
    71
    if (mod & KMOD_LCTRL)
slouken@5461
    72
        print_string(text, maxlen, " LCTRL");
slouken@1895
    73
    if (mod & KMOD_RCTRL)
slouken@5461
    74
        print_string(text, maxlen, " RCTRL");
slouken@1895
    75
    if (mod & KMOD_LALT)
slouken@5461
    76
        print_string(text, maxlen, " LALT");
slouken@1895
    77
    if (mod & KMOD_RALT)
slouken@5461
    78
        print_string(text, maxlen, " RALT");
slouken@2303
    79
    if (mod & KMOD_LGUI)
slouken@5461
    80
        print_string(text, maxlen, " LGUI");
slouken@2303
    81
    if (mod & KMOD_RGUI)
slouken@5461
    82
        print_string(text, maxlen, " RGUI");
slouken@1895
    83
    if (mod & KMOD_NUM)
slouken@5461
    84
        print_string(text, maxlen, " NUM");
slouken@1895
    85
    if (mod & KMOD_CAPS)
slouken@5461
    86
        print_string(text, maxlen, " CAPS");
slouken@1895
    87
    if (mod & KMOD_MODE)
slouken@5461
    88
        print_string(text, maxlen, " MODE");
slouken@0
    89
}
slouken@0
    90
slouken@1895
    91
static void
slouken@9667
    92
PrintModifierState()
slouken@9667
    93
{
slouken@9667
    94
    char message[512];
slouken@9667
    95
    char *spot;
slouken@9667
    96
    size_t left;
slouken@9667
    97
slouken@9667
    98
    spot = message;
slouken@9667
    99
    left = sizeof(message);
slouken@9667
   100
slouken@9667
   101
    print_modifiers(&spot, &left);
slouken@9667
   102
    SDL_Log("Initial state:%s\n", message);
slouken@9667
   103
}
slouken@9667
   104
slouken@9667
   105
static void
slouken@5218
   106
PrintKey(SDL_Keysym * sym, SDL_bool pressed, SDL_bool repeat)
slouken@0
   107
{
slouken@5461
   108
    char message[512];
slouken@5461
   109
    char *spot;
slouken@5461
   110
    size_t left;
slouken@5461
   111
slouken@5461
   112
    spot = message;
slouken@5461
   113
    left = sizeof(message);
slouken@5461
   114
slouken@1895
   115
    /* Print the keycode, name and state */
slouken@1895
   116
    if (sym->sym) {
slouken@5461
   117
        print_string(&spot, &left,
slouken@5461
   118
                "Key %s:  scancode %d = %s, keycode 0x%08X = %s ",
slouken@5461
   119
                pressed ? "pressed " : "released",
slouken@5461
   120
                sym->scancode,
slouken@5461
   121
                SDL_GetScancodeName(sym->scancode),
slouken@5461
   122
                sym->sym, SDL_GetKeyName(sym->sym));
slouken@1895
   123
    } else {
slouken@5461
   124
        print_string(&spot, &left,
slouken@5461
   125
                "Unknown Key (scancode %d = %s) %s ",
slouken@5461
   126
                sym->scancode,
slouken@5461
   127
                SDL_GetScancodeName(sym->scancode),
jorgen@6922
   128
                pressed ? "pressed " : "released");
slouken@1895
   129
    }
slouken@5461
   130
    print_modifiers(&spot, &left);
slouken@4560
   131
    if (repeat) {
slouken@5461
   132
        print_string(&spot, &left, " (repeat)");
slouken@4560
   133
    }
jorgen@6922
   134
    SDL_Log("%s\n", message);
slouken@0
   135
}
slouken@0
   136
bob@2300
   137
static void
icculus@9581
   138
PrintText(char *eventtype, char *text)
bob@2300
   139
{
aschiffler@7639
   140
    char *spot, expanded[1024];
slouken@7317
   141
slouken@7317
   142
    expanded[0] = '\0';
slouken@7317
   143
    for ( spot = text; *spot; ++spot )
slouken@7317
   144
    {
slouken@7317
   145
        size_t length = SDL_strlen(expanded);
aschiffler@7639
   146
        SDL_snprintf(expanded + length, sizeof(expanded) - length, "\\x%.2x", (unsigned char)*spot);
slouken@7317
   147
    }
icculus@9581
   148
    SDL_Log("%s Text (%s): \"%s%s\"\n", eventtype, expanded, *text == '"' ? "\\" : "", text);
bob@2300
   149
}
bob@2300
   150
icculus@9278
   151
void
icculus@9278
   152
loop()
icculus@9278
   153
{
icculus@9278
   154
    SDL_Event event;
icculus@9278
   155
    /* Check for events */
icculus@9278
   156
    /*SDL_WaitEvent(&event); emscripten does not like waiting*/
icculus@9278
   157
icculus@9278
   158
    while (SDL_PollEvent(&event)) {
icculus@9278
   159
        switch (event.type) {
icculus@9278
   160
        case SDL_KEYDOWN:
icculus@9580
   161
        case SDL_KEYUP:
philipp@9922
   162
            PrintKey(&event.key.keysym, (event.key.state == SDL_PRESSED) ? SDL_TRUE : SDL_FALSE, (event.key.repeat) ? SDL_TRUE : SDL_FALSE);
icculus@9278
   163
            break;
icculus@9581
   164
        case SDL_TEXTEDITING:
icculus@9581
   165
            PrintText("EDIT", event.text.text);
icculus@9581
   166
            break;
icculus@9278
   167
        case SDL_TEXTINPUT:
icculus@9581
   168
            PrintText("INPUT", event.text.text);
icculus@9278
   169
            break;
icculus@9278
   170
        case SDL_MOUSEBUTTONDOWN:
icculus@9278
   171
            /* Any button press quits the app... */
icculus@9278
   172
        case SDL_QUIT:
icculus@9278
   173
            done = 1;
icculus@9278
   174
            break;
icculus@9278
   175
        default:
icculus@9278
   176
            break;
icculus@9278
   177
        }
icculus@9278
   178
    }
philipp@9607
   179
#ifdef __EMSCRIPTEN__
philipp@9607
   180
    if (done) {
philipp@9607
   181
        emscripten_cancel_main_loop();
philipp@9607
   182
    }
philipp@9607
   183
#endif
icculus@9278
   184
}
icculus@9278
   185
slouken@1895
   186
int
slouken@1895
   187
main(int argc, char *argv[])
slouken@0
   188
{
slouken@5461
   189
    SDL_Window *window;
philipp@9922
   190
philipp@9922
   191
    /* Enable standard application logging */
philipp@9922
   192
    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
slouken@0
   193
slouken@1895
   194
    /* Initialize SDL */
slouken@1895
   195
    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
philipp@9922
   196
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
slouken@1895
   197
        return (1);
slouken@1895
   198
    }
slouken@0
   199
slouken@1895
   200
    /* Set 640x480 video mode */
slouken@5461
   201
    window = SDL_CreateWindow("CheckKeys Test",
slouken@5461
   202
                              SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
slouken@5461
   203
                              640, 480, 0);
slouken@5461
   204
    if (!window) {
aschiffler@7639
   205
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create 640x480 window: %s\n",
slouken@1895
   206
                SDL_GetError());
slouken@1895
   207
        quit(2);
slouken@1895
   208
    }
slouken@0
   209
slouken@5461
   210
#if __IPHONEOS__
slouken@5461
   211
    /* Creating the context creates the view, which we need to show keyboard */
slouken@5461
   212
    SDL_GL_CreateContext(window);
slouken@5461
   213
#endif
slouken@6392
   214
slouken@6654
   215
    SDL_StartTextInput();
slouken@5461
   216
slouken@9667
   217
    /* Print initial modifier state */
slouken@9667
   218
    SDL_PumpEvents();
slouken@9667
   219
    PrintModifierState();
slouken@9667
   220
slouken@1895
   221
    /* Watch keystrokes */
slouken@1895
   222
    done = 0;
icculus@9278
   223
icculus@9278
   224
#ifdef __EMSCRIPTEN__
icculus@9278
   225
    emscripten_set_main_loop(loop, 0, 1);
icculus@9278
   226
#else
slouken@1895
   227
    while (!done) {
icculus@9278
   228
        loop();
slouken@1895
   229
    }
icculus@9278
   230
#endif
icculus@1151
   231
slouken@1895
   232
    SDL_Quit();
slouken@1895
   233
    return (0);
slouken@0
   234
}
slouken@5461
   235
slouken@5461
   236
/* vi: set ts=4 sw=4 expandtab: */