1 /* test_scankey.c - collate incoming ansi escape sequences. 2 * 3 * Copyright 2015 Rob Landley <rob (at) landley.net> 4 * 5 * TODO sigwinch 6 7 USE_TEST_SCANKEY(NEWTOY(test_scankey, 0, TOYFLAG_BIN)) 8 9 config TEST_SCANKEY 10 bool "test_scankey" 11 default n 12 help 13 usage: test_scankey 14 15 Move a letter around the screen. Hit ESC to exit. 16 */ 17 18 #define FOR_test_scankey 19 #include "toys.h" 20 21 void test_scankey_main(void) 22 { 23 time_t t[2]; 24 unsigned width, height, tick; 25 char c = 'X', scratch[16]; 26 int key, x, y; 27 28 t[0] = t[1] = x = tick = 0; 29 memset(scratch, 0, 16); 30 y = 1; 31 32 sigatexit(tty_sigreset); // Make ctrl-c restore tty 33 tty_esc("?25l"); // hide cursor 34 tty_esc("0m"); // reset color to default 35 tty_esc("2J"); // Clear screen 36 xset_terminal(1, 1, 0); // Raw mode 37 38 for (;;) { 39 tty_jump(x, y); 40 xputc(c); 41 t[1&++tick] = time(0); 42 if (t[0] != t[1]) terminal_probesize(&width, &height); 43 // Don't block first time through, to force header print 44 key = scan_key_getsize(scratch, -1*!!t[0], &width, &height); 45 tty_jump(0, 0); 46 printf("ESC to exit: "); 47 // Print unknown escape sequence 48 if (*scratch) { 49 printf("key=[ESC"); 50 // Fetch rest of sequence after deviation, time gap determines end 51 while (0<(key = scan_key_getsize(scratch, 0, &width, &height))) 52 printf("%c", key); 53 printf("] "); 54 } else printf("key=%d ", key); 55 printf("x=%d y=%d width=%d height=%d\033[K", x, y, width, height); 56 fflush(0); 57 58 if (key == -2) continue; 59 if (key <= ' ') break; 60 if (key>=256) { 61 tty_jump(x, y); 62 xputc(' '); 63 64 key -= 256; 65 if (key==KEY_UP) y--; 66 else if (key==KEY_DOWN) y++; 67 else if (key==KEY_RIGHT) x++; 68 else if (key==KEY_LEFT) x--; 69 else if (key==KEY_PGUP) y = 0; 70 else if (key==KEY_PGDN) y = 999; 71 else if (key==KEY_HOME) x = 0; 72 else if (key==KEY_END) x = 999; 73 if (y<1) y = 1; 74 if (y>=height) y = height-1; 75 if (x<0) x = 0; 76 if (x>=width) x = width-1; 77 } else c = key; 78 } 79 tty_reset(); 80 } 81
