#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL.h"

Include dependency graph for checkkeys.c:

Functions
static void	quit (int rc)
static void	print_string (char *text, size_t maxlen, const char *fmt,...)
static void	print_modifiers (char *text, size_t maxlen)
static void	PrintModifierState ()
static void	PrintKey (SDL_Keysym *sym, SDL_bool pressed, SDL_bool repeat)
static void	PrintText (char eventtype, char text)
void	loop ()
int	main (int argc, char *argv[])

Variables
int	done

Function Documentation

void loop ( )

Definition at line 152 of file checkkeys.c.

References SDL_MouseButtonEvent::button, SDL_Event::button, done, SDL_Event::key, SDL_KeyboardEvent::keysym, PrintKey(), PrintText(), SDL_KeyboardEvent::repeat, SDL_BUTTON_LEFT, SDL_FALSE, SDL_IsTextInputActive, SDL_KEYDOWN, SDL_KEYUP, SDL_Log, SDL_MOUSEBUTTONDOWN, SDL_PollEvent, SDL_PRESSED, SDL_QUIT, SDL_StartTextInput, SDL_StopTextInput, SDL_TEXTEDITING, SDL_TEXTINPUT, SDL_TRUE, SDL_KeyboardEvent::state, SDL_TextInputEvent::text, SDL_Event::text, and SDL_Event::type.

Referenced by main(), test_multi_audio(), WatchGameController(), and WatchJoystick().

{
    SDL_Event event;
    /* Check for events */
    /*SDL_WaitEvent(&event); emscripten does not like waiting*/
    while (SDL_PollEvent(&event)) {
        switch (event.type) {
        case SDL_KEYDOWN:
        case SDL_KEYUP:
            PrintKey(&event.key.keysym, (event.key.state == SDL_PRESSED) ? SDL_TRUE : SDL_FALSE, (event.key.repeat) ? SDL_TRUE : SDL_FALSE);
            break;
        case SDL_TEXTEDITING:
            PrintText("EDIT", event.text.text);
            break;
        case SDL_TEXTINPUT:
            PrintText("INPUT", event.text.text);
            break;
        case SDL_MOUSEBUTTONDOWN:
            /* Left button quits the app, other buttons toggles text input */
            if (event.button.button == SDL_BUTTON_LEFT) {
                done = 1;
            } else {
                if (SDL_IsTextInputActive()) {
                    SDL_Log("Stopping text input\n");
                    SDL_StopTextInput();
                } else {
                    SDL_Log("Starting text input\n");
                    SDL_StartTextInput();
                }
            }
            break;
        case SDL_QUIT:
            done = 1;
            break;
        default:
            break;
        }
    }
#ifdef __EMSCRIPTEN__
    if (done) {
        emscripten_cancel_main_loop();
    }
#endif
}

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 199 of file checkkeys.c.

References done, loop(), PrintModifierState(), quit(), SDL_CreateWindow, SDL_GetError, SDL_GL_CreateContext, SDL_Init, SDL_INIT_VIDEO, SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, SDL_LogError, SDL_LogSetPriority, SDL_PumpEvents, SDL_Quit, SDL_StartTextInput, and SDL_WINDOWPOS_CENTERED.

{
    SDL_Window *window;
    /* Enable standard application logging */
    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
    /* Initialize SDL */
    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
        return (1);
    }
    /* Set 640x480 video mode */
    window = SDL_CreateWindow("CheckKeys Test",
                              SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
                              640, 480, 0);
    if (!window) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create 640x480 window: %s\n",
                SDL_GetError());
        quit(2);
    }
#if __IPHONEOS__
    /* Creating the context creates the view, which we need to show keyboard */
    SDL_GL_CreateContext(window);
#endif
    SDL_StartTextInput();
    /* Print initial modifier state */
    SDL_PumpEvents();
    PrintModifierState();
    /* Watch keystrokes */
    done = 0;
#ifdef __EMSCRIPTEN__
    emscripten_set_main_loop(loop, 0, 1);
#else
    while (!done) {
        loop();
    }
#endif
    SDL_Quit();
    return (0);
}

static void print_modifiers	(	char **	text,
		size_t *	maxlen
	)

static

Definition at line 58 of file checkkeys.c.

References KMOD_CAPS, KMOD_LALT, KMOD_LCTRL, KMOD_LGUI, KMOD_LSHIFT, KMOD_MODE, KMOD_NUM, KMOD_RALT, KMOD_RCTRL, KMOD_RGUI, KMOD_RSHIFT, print_string(), and SDL_GetModState.

Referenced by PrintKey(), and PrintModifierState().

{
    int mod;
    print_string(text, maxlen, " modifiers:");
    mod = SDL_GetModState();
    if (!mod) {
        print_string(text, maxlen, " (none)");
        return;
    }
    if (mod & KMOD_LSHIFT)
        print_string(text, maxlen, " LSHIFT");
    if (mod & KMOD_RSHIFT)
        print_string(text, maxlen, " RSHIFT");
    if (mod & KMOD_LCTRL)
        print_string(text, maxlen, " LCTRL");
    if (mod & KMOD_RCTRL)
        print_string(text, maxlen, " RCTRL");
    if (mod & KMOD_LALT)
        print_string(text, maxlen, " LALT");
    if (mod & KMOD_RALT)
        print_string(text, maxlen, " RALT");
    if (mod & KMOD_LGUI)
        print_string(text, maxlen, " LGUI");
    if (mod & KMOD_RGUI)
        print_string(text, maxlen, " RGUI");
    if (mod & KMOD_NUM)
        print_string(text, maxlen, " NUM");
    if (mod & KMOD_CAPS)
        print_string(text, maxlen, " CAPS");
    if (mod & KMOD_MODE)
        print_string(text, maxlen, " MODE");
}

static void print_string	(	char **	text,
		size_t *	maxlen,
		const char *	fmt,
			...
	)

static

Definition at line 39 of file checkkeys.c.

References SDL_vsnprintf.

Referenced by print_modifiers(), and PrintKey().

{
    int len;
    va_list ap;
    va_start(ap, fmt);
    len = SDL_vsnprintf(*text, *maxlen, fmt, ap);
    if (len > 0) {
        *text += len;
        if ( ((size_t) len) < *maxlen ) {
            *maxlen -= (size_t) len;
        } else {
            *maxlen = 0;
        }
    }
    va_end(ap);
}

static void PrintKey	(	SDL_Keysym *	sym,
		SDL_bool	pressed,
		SDL_bool	repeat
	)

static

Definition at line 106 of file checkkeys.c.

References print_modifiers(), print_string(), SDL_Keysym::scancode, SDL_GetKeyName, SDL_GetScancodeName, SDL_Log, and SDL_Keysym::sym.

Referenced by loop().

{
    char message[512];
    char *spot;
    size_t left;
    spot = message;
    left = sizeof(message);
    /* Print the keycode, name and state */
    if (sym->sym) {
        print_string(&spot, &left,
                "Key %s:  scancode %d = %s, keycode 0x%08X = %s ",
                pressed ? "pressed " : "released",
                sym->scancode,
                SDL_GetScancodeName(sym->scancode),
                sym->sym, SDL_GetKeyName(sym->sym));
    } else {
        print_string(&spot, &left,
                "Unknown Key (scancode %d = %s) %s ",
                sym->scancode,
                SDL_GetScancodeName(sym->scancode),
                pressed ? "pressed " : "released");
    }
    print_modifiers(&spot, &left);
    if (repeat) {
        print_string(&spot, &left, " (repeat)");
    }
    SDL_Log("%s\n", message);
}

static void PrintModifierState ( )

static

Definition at line 92 of file checkkeys.c.

References print_modifiers(), and SDL_Log.

Referenced by main().

{
    char message[512];
    char *spot;
    size_t left;
    spot = message;
    left = sizeof(message);
    print_modifiers(&spot, &left);
    SDL_Log("Initial state:%s\n", message);
}

static void PrintText	(	char *	eventtype,
		char *	text
	)

static

Definition at line 138 of file checkkeys.c.

References SDL_Log, SDL_snprintf, and SDL_strlen.

Referenced by loop().

{
    char *spot, expanded[1024];
    expanded[0] = '\0';
    for ( spot = text; *spot; ++spot )
    {
        size_t length = SDL_strlen(expanded);
        SDL_snprintf(expanded + length, sizeof(expanded) - length, "\\x%.2x", (unsigned char)*spot);
    }
    SDL_Log("%s Text (%s): \"%s%s\"\n", eventtype, expanded, *text == '"' ? "\\" : "", text);
}

static void quit ( int rc )

static

Definition at line 32 of file checkkeys.c.

References SDL_Quit.

Referenced by button_messagebox(), createCommandBuffers(), createCommandPool(), createDevice(), createFences(), createInstance(), createSemaphore(), createSurface(), createSwapchain(), findPhysicalDevice(), getSurfaceCaps(), getSurfaceFormats(), getSwapchainImages(), killed(), loadGlobalFunctions(), main(), open_audio(), render(), and rerecordCommandBuffer().

{
    SDL_Quit();
    exit(rc);
}

Variable Documentation

int done

Definition at line 28 of file checkkeys.c.

Referenced by CPU_haveCPUID(), iteration(), loop(), main(), poked(), run_automated_tests(), SDL_LoadBMP_RW(), SDL_LoadFile_RW(), SDL_LoadWAV_RW(), SDL_RLEAlphaBlit(), SDL_RLEBlit(), SDL_vsnprintf(), SDL_vsscanf(), test_multi_audio(), WatchGameController(), and WatchJoystick().

Functions

Variables

Function Documentation

Variable Documentation