33 lines
1.6 KiB
Forth
33 lines
1.6 KiB
Forth
# Drawing ASCII text incrementally.
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#
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# To build a disk image:
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# ./translate_mu_baremetal baremetal/ex6.mu # emits disk.img
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# To run:
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# qemu-system-i386 disk.img
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# Or:
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# bochs -f baremetal/boot.bochsrc # boot.bochsrc loads disk.img
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#
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# Expected output: a box and text that doesn't overflow it
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fn main {
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# drawing text within a bounding box
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draw-box-on-real-screen 0xf, 0x1f, 0x79, 0x51, 0x4
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var x/eax: int <- copy 0x20
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var y/ecx: int <- copy 0x20
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x, y <- draw-text-wrapping-right-then-down 0/screen, "hello ", 0x10/xmin, 0x20/ymin, 0x78/xmax, 0x50/ymax, x, y, 0xa/color
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x, y <- draw-text-wrapping-right-then-down 0/screen, "from ", 0x10/xmin, 0x20/ymin, 0x78/xmax, 0x50/ymax, x, y, 0xa/color
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x, y <- draw-text-wrapping-right-then-down 0/screen, "baremetal ", 0x10/xmin, 0x20/ymin, 0x78/xmax, 0x50/ymax, x, y, 0xa/color
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x, y <- draw-text-wrapping-right-then-down 0/screen, "Mu!", 0x10/xmin, 0x20/ymin, 0x78/xmax, 0x50/ymax, x, y, 0xa/color
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# drawing at the cursor in multiple directions
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draw-text-wrapping-down-then-right-from-cursor-over-full-screen 0/screen, "abc", 0xa
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draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, "def", 0xa
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# test drawing near the edge
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x <- draw-text-rightward 0/screen, "R", 0x3f8/x, 0x400/xmax=screen-width, 0x100/y, 0xa/color
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draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, "wrapped from R", 0xa
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x <- draw-text-downward 0/screen, "D", 0x100/x, 0x2f0/y, 0x300/ymax=screen-height, 0xa/color
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draw-text-wrapping-down-then-right-from-cursor-over-full-screen 0/screen, "wrapped from D", 0xa
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}
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