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# Wrappers for real screen primitives that can be passed in a fake screen.
type screen {
num-rows: int
num-cols: int
data: (handle array screen-cell)
pending-scroll?: boolean
top-index: int
cursor-row: int
cursor-col: int
cursor-hide?: boolean
curr-attributes: screen-cell
}
type screen-cell {
color: int
background-color: int
bold?: boolean
underline?: boolean
reverse?: boolean
blink?: boolean
}
fn initialize-screen screen: (addr screen), nrows: int, ncols: int {
var screen-addr/esi: (addr screen) <- copy screen
var tmp/eax: int <- copy 0
var dest/edi: (addr int) <- copy 0
# screen->num-rows = nrows
dest <- get screen-addr, num-rows
tmp <- copy nrows
copy-to *dest, tmp
# screen->num-cols = ncols
dest <- get screen-addr, num-cols
tmp <- copy ncols
copy-to *dest, tmp
# screen->data = new screen-cell[nrows*ncols]
{
var data-addr/edi: (addr handle array screen-cell) <- get screen-addr, data
tmp <- multiply nrows
populate data-addr, tmp
}
# screen->cursor-row = 1
dest <- get screen-addr, cursor-row
copy-to *dest, 1
# screen->cursor-col = 1
dest <- get screen-addr, cursor-col
copy-to *dest, 1
# screen->curr-attributes->background-color = 7 (simulate light background)
var tmp2/eax: (addr screen-cell) <- get screen-addr, curr-attributes
dest <- get tmp2, background-color
copy-to *dest, 7
}
fn screen-size screen: (addr screen) -> nrows/eax: int, ncols/ecx: int {
$screen-size:body: {
compare screen, 0
{
break-if-!=
nrows, ncols <- real-screen-size
break $screen-size:body
}
{
break-if-=
# fake screen
var screen-addr/esi: (addr screen) <- copy screen
var tmp/edx: (addr int) <- get screen-addr, num-rows
nrows <- copy *tmp
tmp <- get screen-addr, num-cols
ncols <- copy *tmp
}
}
}
fn clear-screen screen: (addr screen) {
$clear-screen:body: {
compare screen, 0
{
break-if-!=
clear-real-screen
break $clear-screen:body
}
{
break-if-=
# fake screen
var space/edi: grapheme <- copy 0x20
move-cursor screen, 1, 1
var screen-addr/esi: (addr screen) <- copy screen
var i/eax: int <- copy 1
var nrows/ecx: (addr int) <- get screen-addr, num-rows
{
compare i, *nrows
break-if->
var j/edx: int <- copy 1
var ncols/ebx: (addr int) <- get screen-addr, num-cols
{
compare j, *ncols
break-if->
print-grapheme screen, space
j <- increment
loop
}
i <- increment
loop
}
move-cursor screen, 1, 1
}
}
}
fn move-cursor screen: (addr screen), row: int, column: int {
$move-cursor:body: {
compare screen, 0
{
break-if-!=
move-cursor-on-real-screen row, column
break $move-cursor:body
}
{
break-if-=
# fake screen
}
}
}
fn print-string screen: (addr screen), s: (addr array byte) {
$print-string:body: {
compare screen, 0
{
break-if-!=
print-string-to-real-screen s
break $print-string:body
}
{
break-if-=
# fake screen
}
}
}
fn print-grapheme screen: (addr screen), c: grapheme {
$print-grapheme:body: {
compare screen, 0
{
break-if-!=
print-grapheme-to-real-screen c
break $print-grapheme:body
}
{
break-if-=
# fake screen
}
}
}
fn print-int32-hex screen: (addr screen), n: int {
$print-int32-hex:body: {
compare screen, 0
{
break-if-!=
print-int32-hex-to-real-screen n
break $print-int32-hex:body
}
{
break-if-=
# fake screen
}
}
}
fn reset-formatting screen: (addr screen) {
$reset-formatting:body: {
compare screen, 0
{
break-if-!=
reset-formatting-on-real-screen
break $reset-formatting:body
}
{
break-if-=
# fake screen
}
}
}
fn start-color screen: (addr screen), fg: int, bg: int {
$start-color:body: {
compare screen, 0
{
break-if-!=
start-color-on-real-screen fg, bg
break $start-color:body
}
{
break-if-=
# fake screen
}
}
}
fn start-bold screen: (addr screen) {
$start-bold:body: {
compare screen, 0
{
break-if-!=
start-bold-on-real-screen
break $start-bold:body
}
{
break-if-=
# fake screen
}
}
}
fn start-underline screen: (addr screen) {
$start-underline:body: {
compare screen, 0
{
break-if-!=
start-underline-on-real-screen
break $start-underline:body
}
{
break-if-=
# fake screen
}
}
}
fn start-reverse-video screen: (addr screen) {
$start-reverse-video:body: {
compare screen, 0
{
break-if-!=
start-reverse-video-on-real-screen
break $start-reverse-video:body
}
{
break-if-=
# fake screen
}
}
}
fn start-blinking screen: (addr screen) {
$start-blinking:body: {
compare screen, 0
{
break-if-!=
start-blinking-on-real-screen
break $start-blinking:body
}
{
break-if-=
# fake screen
}
}
}
fn hide-cursor screen: (addr screen) {
$hide-cursor:body: {
compare screen, 0
{
break-if-!=
hide-cursor-on-real-screen
break $hide-cursor:body
}
{
break-if-=
# fake screen
}
}
}
fn show-cursor screen: (addr screen) {
$show-cursor:body: {
compare screen, 0
{
break-if-!=
show-cursor-on-real-screen
break $show-cursor:body
}
{
break-if-=
# fake screen
}
}
}
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