1 # Drawing ASCII text incrementally.
 2 #
 3 # To build a disk image:
 4 #   ./translate_mu_baremetal baremetal/ex6.mu     # emits disk.img
 5 # To run:
 6 #   qemu-system-i386 disk.img
 7 # Or:
 8 #   bochs -f baremetal/boot.bochsrc               # boot.bochsrc loads disk.img
 9 #
10 # Expected output: a box and text that doesn't overflow it
11 
12 fn main {
13   # drawing text within a bounding box
14   draw-box 0, 0xf, 0x1f, 0x79, 0x51, 0x4
15   var x/eax: int <- copy 0x20
16   var y/ecx: int <- copy 0x20
17   x, y <- draw-text-wrapping-right-then-down 0, "hello ",     0x10, 0x20, 0x78, 0x50, x, y, 0xa  # (0x10, 0x20) -> (0x78, 0x50)
18   x, y <- draw-text-wrapping-right-then-down 0, "from ",      0x10, 0x20, 0x78, 0x50, x, y, 0xa
19   x, y <- draw-text-wrapping-right-then-down 0, "baremetal ", 0x10, 0x20, 0x78, 0x50, x, y, 0xa
20   x, y <- draw-text-wrapping-right-then-down 0, "Mu!",        0x10, 0x20, 0x78, 0x50, x, y, 0xa
21 
22   # drawing at the cursor in multiple directions
23   x, y <- draw-text-wrapping-down-then-right-from-cursor-over-full-screen 0, "abc", 0xa
24   x, y <- draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0, "def", 0xa
25 
26   # test drawing near the edge
27   x <- draw-text-rightward 0, "R", 0x3f8, 0x400, 0x100, 0xa
28   x, y <- draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0, "wrapped from R", 0xa
29 
30   x <- draw-text-downward 0, "D", 0x100, 0x2f0, 0x300, 0xa
31   x, y <- draw-text-wrapping-down-then-right-from-cursor-over-full-screen 0, "wrapped from D", 0xa
32 }