31 lines
1.6 KiB
Forth
31 lines
1.6 KiB
Forth
# Drawing ASCII text incrementally.
|
|
#
|
|
# To build a disk image:
|
|
# ./translate apps/ex6.mu # emits code.img
|
|
# To run:
|
|
# qemu-system-i386 code.img
|
|
#
|
|
# Expected output: a box and text that doesn't overflow it
|
|
|
|
fn main screen: (addr screen), keyboard: (addr keyboard), data-disk: (addr disk) {
|
|
# drawing text within a bounding box
|
|
draw-box-on-real-screen 0xf, 0x1f, 0x79, 0x51, 0x4
|
|
var x/eax: int <- copy 0x20
|
|
var y/ecx: int <- copy 0x20
|
|
x, y <- draw-text-wrapping-right-then-down screen, "hello ", 0x10/xmin, 0x20/ymin, 0x78/xmax, 0x50/ymax, x, y, 0xa/fg, 0/bg
|
|
x, y <- draw-text-wrapping-right-then-down screen, "from ", 0x10/xmin, 0x20/ymin, 0x78/xmax, 0x50/ymax, x, y, 0xa/fg, 0/bg
|
|
x, y <- draw-text-wrapping-right-then-down screen, "baremetal ", 0x10/xmin, 0x20/ymin, 0x78/xmax, 0x50/ymax, x, y, 0xa/fg, 0/bg
|
|
x, y <- draw-text-wrapping-right-then-down screen, "Mu!", 0x10/xmin, 0x20/ymin, 0x78/xmax, 0x50/ymax, x, y, 0xa/fg, 0/bg
|
|
|
|
# drawing at the cursor in multiple directions
|
|
draw-text-wrapping-down-then-right-from-cursor-over-full-screen screen, "abc", 0xa/fg, 0/bg
|
|
draw-text-wrapping-right-then-down-from-cursor-over-full-screen screen, "def", 0xa/fg, 0/bg
|
|
|
|
# test drawing near the edge
|
|
x <- draw-text-rightward screen, "R", 0x7f/x, 0x80/xmax=screen-width, 0x18/y, 0xa/fg, 0/bg
|
|
draw-text-wrapping-right-then-down-from-cursor-over-full-screen screen, "wrapped from R", 0xa/fg, 0/bg
|
|
|
|
x <- draw-text-downward screen, "D", 0x20/x, 0x2f/y, 0x30/ymax=screen-height, 0xa/fg, 0/bg
|
|
draw-text-wrapping-down-then-right-from-cursor-over-full-screen screen, "wrapped from D", 0xa/fg, 0/bg
|
|
}
|