almost

[fbgfx] / src / fbevents.c

diff --git a/src/fbevents.c b/src/fbevents.c
new file mode 100644 (file)
index 0000000..1522a58
--- /dev/null
+++ b/src/fbevents.c
@@ -0,0 +1,84 @@
+#include <stdio.h>
+#include <assert.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <termios.h>
+#include "fbevents.h"
+
+static struct termios orig_state;
+static int term_fd = -1;       /* tty file descriptor */
+
+static void (*keyb_func)(int, int, void*);
+static void *keyb_cls;
+static void (*mbutton_func)(int, int, int, int, void*);
+static void *mbutton_cls;
+static void (*mmotion_func)(int, int, void*);
+static void *mmotion_cls;
+
+
+int fbev_init(void)
+{
+       struct termios tstate;
+
+       if((term_fd = open("/dev/tty", O_RDWR)) == -1) {
+               perror("failed to open tty");
+               return -1;
+       }
+       fcntl(term_fd, F_SETFL, fcntl(term_fd, F_GETFL) | O_NONBLOCK);
+
+       if(tcgetattr(term_fd, &tstate) == -1) {
+               perror("failed to retrieve tty attribs");
+               close(term_fd);
+               return -1;
+       }
+       orig_state = tstate;
+
+       cfmakeraw(&tstate);
+       if(tcsetattr(term_fd, TCSANOW, &tstate) == -1) {
+               close(term_fd);
+               return -1;
+       }
+       return 0;
+}
+
+void fbev_shutdown(void)
+{
+       if(term_fd >= 0) {
+               tcsetattr(term_fd, TCSANOW, &orig_state);
+               close(term_fd);
+               term_fd = -1;
+       }
+}
+
+void fbev_update(void)
+{
+       char buf[64];
+       int i, sz;
+       assert(term_fd >= 0);
+
+       while((sz = read(term_fd, buf, 64)) > 0) {
+               if(keyb_func) {
+                       for(i=0; i<sz; i++) {
+                               keyb_func(buf[i], 1, keyb_cls);
+                       }
+               }
+       }
+}
+
+void fbev_keyboard(void (*func)(int, int, void*), void *cls)
+{
+       keyb_func = func;
+       keyb_cls = cls;
+}
+
+void fbev_mbutton(void (*func)(int, int, int, int, void*), void *cls)
+{
+       mbutton_func = func;
+       mbutton_cls = cls;
+}
+
+void fbev_mmotion(void (*func)(int, int, void*), void *cls)
+{
+       mmotion_func = func;
+       mmotion_cls = cls;
+}