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-rw-r--r--toys/example/test_scankey.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/toys/example/test_scankey.c b/toys/example/test_scankey.c
new file mode 100644
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--- /dev/null
+++ b/toys/example/test_scankey.c
@@ -0,0 +1,67 @@
+/* test_scankey.c - collate incoming ansi escape sequences.
+ *
+ * Copyright 2015 Rob Landley <rob@landley.net>
+
+USE_TEST_SCANKEY(NEWTOY(test_scankey, 0, 0))
+
+config TEST_SCANKEY
+ bool "test_scankey"
+ default n
+ help
+ usage: test_scankey
+
+ Move a letter around the screen. Hit ESC to exit.
+*/
+
+#define FOR_test_scankey
+#include "toys.h"
+
+void test_scankey_main(void)
+{
+ time_t t[2];
+ unsigned width, height, tick;
+ char c = 'X', scratch[16];
+ int key, x, y;
+
+ t[0] = t[1] = x = tick = 0;
+ memset(scratch, 0, 16);
+ y = 1;
+
+ sigatexit(tty_sigreset); // Make ctrl-c restore tty
+ tty_esc("?25l"); // hide cursor
+ tty_esc("0m"); // reset color to default
+ tty_esc("2J"); // Clear screen
+ set_terminal(1, 1, 0); // Raw mode
+
+ for (;;) {
+ tty_jump(x, y);
+ xputc(c);
+ t[1&++tick] = time(0);
+ key = scan_key_getsize(scratch, !!t[0]+2*(t[0] != t[1]), &width, &height);
+ tty_jump(0, 0);
+ printf("ESC to exit: key=%d x=%d y=%d width=%d height=%d ",
+ key, x, y, width, height);
+
+ if (key == -2) continue;
+ if (key <= ' ') break;
+ if (key>=256) {
+ tty_jump(x, y);
+ xputc(' ');
+
+ key -= 256;
+ if (key==KEY_UP) y--;
+ else if (key==KEY_DOWN) y++;
+ else if (key==KEY_RIGHT) x++;
+ else if (key==KEY_LEFT) x--;
+ else if (key==KEY_PGUP) y = 0;
+ else if (key==KEY_PGDN) y = 999;
+ else if (key==KEY_HOME) x = 0;
+ else if (key==KEY_END) x = 999;
+ if (y<1) y = 1;
+ if (y>=height) y = height-1;
+ if (x<0) x = 0;
+ if (x>=width) x = width-1;
+ } else c = key;
+ }
+ tty_reset();
+}